Add verigraph code base

JIRA: PARSER-111

Change-Id: Ie76e14fabbb6c388ebc89d9a15dd3021b25fa892
Signed-off-by: serena.spinoso <serena.spinoso@polito.it>

103 files changed, 13717 insertions, 0 deletions

diff --git a/verigraph/src/main/java/it/polito/escape/verify/client/Neo4jManagerClient.java b/verigraph/src/main/java/it/polito/escape/verify/client/Neo4jManagerClient.java
new file mode 100644
index 0000000..044c136
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/client/Neo4jManagerClient.java
@@ -0,0 +1,339 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.client;
+
+import java.io.StringWriter;
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+
+import javax.ws.rs.ProcessingException;
+import javax.ws.rs.client.Client;
+import javax.ws.rs.client.ClientBuilder;
+import javax.ws.rs.client.Entity;
+import javax.ws.rs.client.WebTarget;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import javax.xml.bind.JAXBContext;
+import javax.xml.bind.JAXBElement;
+import javax.xml.bind.JAXBException;
+import javax.xml.bind.Marshaller;
+import javax.xml.stream.FactoryConfigurationError;
+import javax.xml.stream.XMLOutputFactory;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamWriter;
+
+import it.polito.escape.verify.deserializer.PathsMessageBodyReader;
+import it.polito.escape.verify.model.Entry;
+import it.polito.nffg.neo4j.jaxb.ActionEnumType;
+import it.polito.nffg.neo4j.jaxb.ActionType;
+import it.polito.nffg.neo4j.jaxb.ActionsType;
+import it.polito.nffg.neo4j.jaxb.CiType;
+import it.polito.nffg.neo4j.jaxb.CiType.Attributes;
+import it.polito.nffg.neo4j.jaxb.CiType.Attributes.Attribute;
+import it.polito.nffg.neo4j.jaxb.CpType;
+import it.polito.nffg.neo4j.jaxb.CpointsType;
+import it.polito.nffg.neo4j.jaxb.CtrlInterfacesType;
+import it.polito.nffg.neo4j.jaxb.EpCpType;
+import it.polito.nffg.neo4j.jaxb.EpType;
+import it.polito.nffg.neo4j.jaxb.EpType.Flowspace;
+import it.polito.nffg.neo4j.jaxb.EpointsType;
+import it.polito.nffg.neo4j.jaxb.EpsCpsType;
+import it.polito.nffg.neo4j.jaxb.FlowrulesType;
+import it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Tcp;
+import it.polito.nffg.neo4j.jaxb.MonParamsType;
+import it.polito.nffg.neo4j.jaxb.MonParamsType.Parameter;
+import it.polito.nffg.neo4j.jaxb.NeType;
+import it.polito.nffg.neo4j.jaxb.NelementsType;
+import it.polito.nffg.neo4j.jaxb.NfType;
+import it.polito.nffg.neo4j.jaxb.Nffg;
+import it.polito.nffg.neo4j.jaxb.NfunctionsType;
+import it.polito.nffg.neo4j.jaxb.ObjectFactory;
+import it.polito.nffg.neo4j.jaxb.Paths;
+import it.polito.nffg.neo4j.jaxb.PortDirEnumType;
+import it.polito.nffg.neo4j.jaxb.PortType;
+import it.polito.nffg.neo4j.jaxb.SpecType;
+import it.polito.nffg.neo4j.jaxb.SpecType.Cpu;
+import it.polito.nffg.neo4j.jaxb.SpecType.Deployment;
+import it.polito.nffg.neo4j.jaxb.SpecType.Image;
+import it.polito.nffg.neo4j.jaxb.SpecType.Memory;
+import it.polito.nffg.neo4j.jaxb.SpecType.Storage;
+
+public class Neo4jManagerClient {
+
+	private JAXBContext					jc;
+
+	private String						address;
+
+	private Nffg						nffg;
+
+	private List<String>				endpoints		= new LinkedList<String>();
+
+	private List<String>				firewalls		= new LinkedList<String>();
+
+	private Map<String, List<Entry>>	routingTable	= new HashMap<String, List<Entry>>();
+
+	private String						source;
+
+	private String						destination;
+
+	private String						xmlString;
+
+	private WebTarget					baseTarget;
+
+	public Neo4jManagerClient() {
+
+	}
+
+	public Neo4jManagerClient(	String address, String source, String destination, List<String> endpoints,
+								List<String> firewalls, Map<String, List<Entry>> routingTable) {
+		this.address = address;
+		this.source = source;
+		this.destination = destination;
+		this.endpoints = endpoints;
+		this.firewalls = firewalls;
+		this.routingTable = routingTable;
+
+		Client client = ClientBuilder.newBuilder().register(PathsMessageBodyReader.class).build();
+
+		this.baseTarget = client.target(this.address);
+	}
+
+	public Paths getPaths() throws Exception {
+		try {
+			this.generateCustomXml();
+		}
+		catch (JAXBException e) {
+			throw (e);
+		}
+
+		WebTarget graphsTarget = baseTarget.path("graphs");
+		WebTarget pathSourceDestination = graphsTarget.path("{graphId}/paths");
+		WebTarget deleteNffg = graphsTarget.path("{graphId}");
+
+		Response deleteNffgResponse = deleteNffg.resolveTemplate("graphId", "1").request().delete();
+		if (deleteNffgResponse.getStatus() != javax.ws.rs.core.Response.Status.NO_CONTENT.getStatusCode()
+			&& deleteNffgResponse.getStatus() != javax.ws.rs.core.Response.Status.NOT_FOUND.getStatusCode()) {
+			throw new Exception("graph deletion failed");
+		}
+
+		Response createNffgResponse = graphsTarget	.request("application/xml")
+													.post(Entity.entity(this.xmlString, "application/xml"));
+		if (createNffgResponse.getStatus() != javax.ws.rs.core.Response.Status.CREATED.getStatusCode()) {
+			throw new Exception("graph creation failed");
+		}
+
+		System.out.println("Getting paths from node \"" + this.source + "\" to node \"" + this.destination + "\"...");
+		Response getPath = pathSourceDestination.resolveTemplate("graphId", "1")
+												.queryParam("src", this.source)
+												.queryParam("dst", this.destination)
+												.queryParam("dir", "outgoing")
+												.request(MediaType.APPLICATION_XML)
+												.get();
+
+		System.out.println("Paths from node \"" + this.source + "\" to node \"" + this.destination + "\":");
+
+		Paths paths = null;
+		try {
+			paths = getPath.readEntity(Paths.class);
+		}
+		catch (ProcessingException e) {
+			throw (e);
+		}
+		catch (IllegalStateException e) {
+			throw (e);
+		}
+
+		return paths;
+	}
+
+	private void generateCustomXml() throws JAXBException {
+
+		jc = JAXBContext.newInstance("it.polito.nffg.neo4j.jaxb");
+
+		nffg = new Nffg();
+		nffg.setId("nffg_1");
+
+		generateEndpoints();
+		generateFirewalls();
+		generateConnections();
+
+		MonParamsType monitoring_parameters = new MonParamsType();
+		nffg.setMonitoringParameters(monitoring_parameters);
+
+		JAXBElement<Nffg> root = (new ObjectFactory()).createNffg(nffg);
+
+		Marshaller m;
+		try {
+			m = jc.createMarshaller();
+			m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
+
+			StringWriter stringWriter = new StringWriter();
+			try {
+				XMLStreamWriter xmlStreamWriter = XMLOutputFactory.newInstance().createXMLStreamWriter(stringWriter);
+				m.marshal(root, xmlStreamWriter);
+				xmlString = stringWriter.getBuffer().toString();
+			}
+			catch (XMLStreamException e) {
+				e.printStackTrace();
+			}
+			catch (FactoryConfigurationError e) {
+
+				e.printStackTrace();
+			}
+			// m.marshal( root, new File("nffg.xml") );
+			System.out.println(xmlString);
+
+		}
+		catch (JAXBException e) {
+			throw (e);
+		}
+	}
+
+	private void generateConnections() {
+		NelementsType network_elements = new NelementsType();
+		NeType network_element = new NeType();
+		network_element.setId("ne_1");
+		network_element.setType("BiSBiS");
+		EpsCpsType ep_cps = new EpsCpsType();
+
+		for (String node : routingTable.keySet()) {
+			EpCpType ep_cp = new EpCpType();
+			ep_cp.setIdRef(node);
+			FlowrulesType flowrules = new FlowrulesType();
+			it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace flowspace =
+																		new it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace();
+			flowrules.setFlowspace(flowspace);
+			ActionsType actions = new ActionsType();
+			for (Entry e : routingTable.get(node)) {
+				ActionType action = new ActionType();
+				action.setType(ActionEnumType.fromValue(e.getDirection()));
+				action.setPort(e.getDestination());
+				actions.getAction().add(action);
+			}
+			flowrules.setActions(actions);
+
+			ep_cp.getFlowrules().add(flowrules);
+			ep_cps.getEpCp().add(ep_cp);
+		}
+		network_element.setEpsCps(ep_cps);
+
+		MonParamsType monitoring_parameters = new MonParamsType();
+		Parameter parameter = new Parameter();
+		parameter.getValue().add("Bandwith ep_1 cp_1 100mbit");
+		monitoring_parameters.getParameter().add(parameter);
+		Parameter parameter2 = new Parameter();
+		parameter2.getValue().add("Delay ep_1 cp_1 50ms");
+		monitoring_parameters.getParameter().add(parameter2);
+
+		network_element.setMonitoringParameters(monitoring_parameters);
+
+		network_elements.getNetworkElement().add(network_element);
+
+		nffg.setNetworkElements(network_elements);
+
+	}
+
+	private void generateFirewalls() {
+		NfunctionsType network_functions = new NfunctionsType();
+
+		for (String firewall : firewalls) {
+			NfType nf = new NfType();
+			nf.setId(firewall);
+			nf.setFunctionalType("firewall");
+
+			SpecType specification = new SpecType();
+			Deployment deployment = new Deployment();
+			deployment.setType("PolitoFirewall");
+			Image image = new Image();
+			image.setUri("http://www.polito.it");
+			Cpu cpu = new Cpu();
+			cpu.setNumCores((short) (7));
+			Memory memory = new Memory();
+			memory.setSize("10MiB");
+			Storage storage = new Storage();
+			storage.setSize("100MiB");
+			specification.setDeployment(deployment);
+			specification.setImage(image);
+			specification.setCpu(cpu);
+			specification.setMemory(memory);
+			specification.setStorage(storage);
+
+			CpointsType connection_points = new CpointsType();
+			CpType connection_point = new CpType();
+			connection_point.setId(firewall + "_in");
+			PortType port = new PortType();
+			port.setId(79);
+			port.setDirection(PortDirEnumType.IN);
+			port.setType("GbE");
+			connection_point.setPort(port);
+			connection_points.getConnectionPoint().add(connection_point);
+
+			CpType connection_point2 = new CpType();
+			connection_point2.setId(firewall + "_out");
+			PortType port2 = new PortType();
+			port2.setId(77);
+			port2.setDirection(PortDirEnumType.OUT);
+			port2.setType("10GbE");
+			connection_point2.setPort(port2);
+
+			connection_points.getConnectionPoint().add(connection_point2);
+
+			CtrlInterfacesType control_interfaces = new CtrlInterfacesType();
+			CiType control_interface = new CiType();
+			control_interface.setId(firewall + "_ci");
+
+			Attributes attributes = new Attributes();
+			Attribute attribute = new Attribute();
+			attribute.setValue("tcp://127.0.0.1:5555");
+			attributes.getAttribute().add(attribute);
+			Attribute attribute2 = new Attribute();
+			attribute2.setValue("Netconf");
+			attributes.getAttribute().add(attribute2);
+			control_interface.setAttributes(attributes);
+
+			control_interfaces.getControlInterface().add(control_interface);
+
+			MonParamsType monitoring_parameters = new MonParamsType();
+			Parameter parameter = new Parameter();
+			parameter.getValue().add("Measure script");
+			monitoring_parameters.getParameter().add(parameter);
+
+			nf.setSpecification(specification);
+			nf.setConnectionPoints(connection_points);
+			nf.setControlInterfaces(control_interfaces);
+			nf.setMonitoringParameters(monitoring_parameters);
+
+			network_functions.getNetworkFunction().add(nf);
+
+		}
+		nffg.setNetworkFunctions(network_functions);
+
+	}
+
+	private void generateEndpoints() {
+		EpointsType eps = new EpointsType();
+
+		for (String e : endpoints) {
+			EpType endpoint = new EpType();
+			endpoint.setId(e);
+			Flowspace flowspace = new Flowspace();
+			flowspace.setIngPhysPort("10");
+			Tcp tcp = new Tcp();
+			tcp.setSrc(80);
+			flowspace.setTcp(tcp);
+			endpoint.setFlowspace(flowspace);
+			eps.getEndpoint().add(endpoint);
+		}
+		nffg.setEndpoints(eps);
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/client/VerifyClient.java b/verigraph/src/main/java/it/polito/escape/verify/client/VerifyClient.java
new file mode 100644
index 0000000..1997553
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/client/VerifyClient.java
@@ -0,0 +1,444 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.client;
+
+import java.io.File;
+import java.io.FileReader;
+import java.io.FilenameFilter;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.ws.rs.ProcessingException;
+import javax.ws.rs.client.Client;
+import javax.ws.rs.client.ClientBuilder;
+import javax.ws.rs.client.Entity;
+import javax.ws.rs.client.ResponseProcessingException;
+import javax.ws.rs.client.WebTarget;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.Response.Status;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import it.polito.escape.verify.model.ErrorMessage;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Neighbour;
+import it.polito.escape.verify.model.Node;
+import it.polito.escape.verify.model.Verification;
+
+public class VerifyClient {
+
+	private WebTarget	baseTarget;
+
+	private WebTarget	graphsTarget;
+
+	private WebTarget	graphTarget;
+
+	private WebTarget	nodesTarget;
+
+	private WebTarget	nodeTarget;
+
+	private WebTarget	neighboursTarget;
+
+	private WebTarget	neighbourTarget;
+
+	private WebTarget	reachabilityTarget;
+
+	private WebTarget	isolationTarget;
+
+	private WebTarget	traversalTarget;
+
+	public VerifyClient(String address) {
+		Client client = ClientBuilder.newClient();
+
+		this.baseTarget = client.target(address);
+		this.graphsTarget = baseTarget.path("graphs");
+		this.graphTarget = graphsTarget.path("/{graphId}");
+		this.nodesTarget = graphTarget.path("/nodes");
+		this.nodeTarget = nodesTarget.path("//{nodeId}");
+		this.neighboursTarget = nodeTarget.path("/neighbours");
+		this.neighbourTarget = neighboursTarget.path("/{neighbourId}");
+		this.reachabilityTarget = graphTarget.path("/policy");
+		this.isolationTarget = graphTarget.path("/policy");
+		this.traversalTarget = graphTarget.path("/policy");
+	}
+
+	public void checkResponse(Response response) throws VerifyClientException {
+		int status = response.getStatus();
+
+		// 400
+		if (status == Response.Status.BAD_REQUEST.getStatusCode()) {
+			try {
+				// String responseString = response.readEntity(String.class);
+				// System.out.println(responseString);
+				ErrorMessage errorMessage = response.readEntity(ErrorMessage.class);
+				String message = errorMessage.getErrorMessage();
+				throw new VerifyClientException("Bad request: " + message);
+			}
+			catch (ProcessingException e) {
+				throw new VerifyClientException("the content of the message cannot be mapped to an entity of the 'ErrorMessage': "
+												+ e.getMessage());
+			}
+			catch (IllegalStateException e) {
+				throw new VerifyClientException("the entity is not backed by an input stream or the original entity input stream has already been consumed without buffering the entity data prior consuming: "
+												+ e.getMessage());
+			}
+		}
+		// 403
+		if (status == Response.Status.FORBIDDEN.getStatusCode()) {
+			try {
+				ErrorMessage errorMessage = response.readEntity(ErrorMessage.class);
+				String message = errorMessage.getErrorMessage();
+				throw new VerifyClientException("Forbidden: " + message);
+			}
+			catch (ProcessingException e) {
+				throw new VerifyClientException("the content of the message cannot be mapped to an entity of the 'ErrorMessage': "
+												+ e.getMessage());
+			}
+			catch (IllegalStateException e) {
+				throw new VerifyClientException("the entity is not backed by an input stream or the original entity input stream has already been consumed without buffering the entity data prior consuming: "
+												+ e.getMessage());
+			}
+		}
+		// 404
+		if (status == Response.Status.NOT_FOUND.getStatusCode()) {
+			try {
+				ErrorMessage errorMessage = response.readEntity(ErrorMessage.class);
+				String message = errorMessage.getErrorMessage();
+				throw new VerifyClientException("Not found: " + message);
+			}
+			catch (ProcessingException e) {
+				throw new VerifyClientException("the content of the message cannot be mapped to an entity of the 'ErrorMessage': "
+												+ e.getMessage());
+			}
+			catch (IllegalStateException e) {
+				throw new VerifyClientException("the 'Response' entity is not backed by an input stream or the original entity input stream has already been consumed without buffering the entity data prior consuming: "
+												+ e.getMessage());
+			}
+		}
+		// 500
+		if (status == Response.Status.INTERNAL_SERVER_ERROR.getStatusCode()) {
+			try {
+				ErrorMessage errorMessage = response.readEntity(ErrorMessage.class);
+				String message = errorMessage.getErrorMessage();
+				throw new VerifyClientException("Internal server error: " + message);
+			}
+			catch (ProcessingException e) {
+				throw new VerifyClientException("the content of the message cannot be mapped to an entity of the 'ErrorMessage': "
+												+ e.getMessage());
+			}
+			catch (IllegalStateException e) {
+				throw new VerifyClientException("the entity is not backed by an input stream or the original entity input stream has already been consumed without buffering the entity data prior consuming: "
+												+ e.getMessage());
+			}
+		}
+		if (status != Response.Status.ACCEPTED.getStatusCode()	&& status != Response.Status.CREATED.getStatusCode()
+			&& status != Response.Status.NO_CONTENT.getStatusCode() && status != Response.Status.OK.getStatusCode())
+			throw new VerifyClientException("Unknown error");
+	}
+
+	public Response createGraph(Graph graph) throws VerifyClientException, ResponseProcessingException, ProcessingException {
+		Response response = graphsTarget.request().post(Entity.json(graph));
+		checkResponse(response);
+		return response;
+	}
+
+	public Response createGraph(String graph) throws VerifyClientException, ResponseProcessingException, ProcessingException {
+		Response response = graphsTarget.request().post(Entity.entity(graph, "application/json"));
+		checkResponse(response);
+		return response;
+	}
+
+	public Response retrieveGraph(long graphId) throws VerifyClientException, ProcessingException {
+		Response response = graphTarget.resolveTemplate("graphId", graphId).request().get();
+		checkResponse(response);
+		return response;
+	}
+
+	public Response updateGraph(long graphId, Graph graph) throws VerifyClientException, ResponseProcessingException, ProcessingException {
+		Response response = graphTarget.resolveTemplate("graphId", graphId).request().put(Entity.json(graph));
+		checkResponse(response);
+		return response;
+	}
+
+	public Response deleteGraph(long graphId) throws VerifyClientException, ResponseProcessingException, ProcessingException {
+		Response response = graphTarget.resolveTemplate("graphId", graphId).request().delete();
+		checkResponse(response);
+		return response;
+	}
+
+	public Response createNode(long graphId, Node node) throws VerifyClientException, ResponseProcessingException, ProcessingException {
+		Response response = nodesTarget.resolveTemplate("graphId", graphId).request().post(Entity.json(node));
+		checkResponse(response);
+		return response;
+	}
+
+	public Response retrieveNode(long graphId, long nodeId) throws VerifyClientException, ProcessingException {
+		Response response = nodeTarget	.resolveTemplate("graphId", graphId)
+										.resolveTemplate("nodeId", nodeId)
+										.request()
+										.get();
+		checkResponse(response);
+		return response;
+	}
+
+	public Response updateNode(long graphId, long nodeId, Node node) throws VerifyClientException, ResponseProcessingException, ProcessingException {
+		Response response = nodeTarget	.resolveTemplate("graphId", graphId)
+										.resolveTemplate("nodeId", nodeId)
+										.request()
+										.put(Entity.json(node));
+		checkResponse(response);
+		return response;
+	}
+
+	public Response deleteNode(long graphId, long nodeId) throws VerifyClientException, ResponseProcessingException, ProcessingException {
+		Response response = nodeTarget	.resolveTemplate("graphId", graphId)
+										.resolveTemplate("nodeId", nodeId)
+										.request()
+										.delete();
+		checkResponse(response);
+		return response;
+	}
+
+	public Response createNeighbour(long graphId, long nodeId, Neighbour neighbour) throws VerifyClientException, ResponseProcessingException, ProcessingException {
+		Response response = neighboursTarget.resolveTemplate("graphId", graphId)
+											.resolveTemplate("nodeId", nodeId)
+											.request()
+											.post(Entity.json(neighbour));
+		checkResponse(response);
+		return response;
+	}
+
+	public Response retrieveNeighbour(long graphId, long nodeId, long neighbourId) throws VerifyClientException, ProcessingException {
+		Response response = neighbourTarget	.resolveTemplate("graphId", graphId)
+											.resolveTemplate("nodeId", nodeId)
+											.resolveTemplate("neighbourId", neighbourId)
+											.request()
+											.get();
+		checkResponse(response);
+		return response;
+	}
+
+	public Response updateNeighbour(long graphId, long nodeId, long neighbourId,
+									Neighbour neighbour) throws VerifyClientException, ResponseProcessingException, ProcessingException {
+		Response response = neighbourTarget	.resolveTemplate("graphId", graphId)
+											.resolveTemplate("nodeId", nodeId)
+											.resolveTemplate("neighbourId", neighbourId)
+											.request()
+											.put(Entity.json(neighbour));
+		checkResponse(response);
+		return response;
+	}
+
+	public Response deleteNeighbour(long graphId, long nodeId, long neighbourId) throws VerifyClientException, ResponseProcessingException, ProcessingException {
+		Response response = neighbourTarget	.resolveTemplate("graphId", graphId)
+											.resolveTemplate("nodeId", nodeId)
+											.resolveTemplate("neighbourId", neighbourId)
+											.request()
+											.delete();
+		checkResponse(response);
+		return response;
+	}
+
+	public Verification getReachability(long graphId, String source, String destination) throws VerifyClientException, ProcessingException{
+		Response response = reachabilityTarget.resolveTemplate("graphId", graphId)
+				.queryParam("source", source)
+				.queryParam("destination", destination)
+				.queryParam("type", "reachability")
+				.request()
+				.get();
+		checkResponse(response);
+		try{
+			Verification verification = response.readEntity(Verification.class);
+			return verification;
+		}
+		catch (ProcessingException e) {
+			throw new VerifyClientException("the content of the message cannot be mapped to an entity of the 'Verification': "
+											+ e.getMessage());
+		}
+		catch (IllegalStateException e) {
+			throw new VerifyClientException("the 'Verification' entity is not backed by an input stream or the original entity input stream has already been consumed without buffering the entity data prior consuming: "
+											+ e.getMessage());
+		}
+	}
+
+	public Verification getIsolation(long graphId, String source, String destination, String middlebox) throws VerifyClientException, ProcessingException{
+		Response response = isolationTarget.resolveTemplate("graphId", graphId)
+				.queryParam("source", source)
+				.queryParam("destination", destination)
+				.queryParam("middlebox", middlebox)
+				.queryParam("type", "isolation")
+				.request()
+				.get();
+		checkResponse(response);
+		try{
+			Verification verification = response.readEntity(Verification.class);
+			return verification;
+		}
+		catch (ProcessingException e) {
+			throw new VerifyClientException("the content of the message cannot be mapped to an entity of the 'Verification': "
+											+ e.getMessage());
+		}
+		catch (IllegalStateException e) {
+			throw new VerifyClientException("the 'Verification' entity is not backed by an input stream or the original entity input stream has already been consumed without buffering the entity data prior consuming: "
+											+ e.getMessage());
+		}
+	}
+
+	public Verification getTraversal(long graphId, String source, String destination, String middlebox) throws VerifyClientException, ProcessingException{
+		Response response = traversalTarget.resolveTemplate("graphId", graphId)
+				.queryParam("source", source)
+				.queryParam("destination", destination)
+				.queryParam("middlebox", middlebox)
+				.queryParam("type", "traversal")
+				.request()
+				.get();
+		checkResponse(response);
+		try{
+			Verification verification = response.readEntity(Verification.class);
+			return verification;
+		}
+		catch (ProcessingException e) {
+			throw new VerifyClientException("the content of the message cannot be mapped to an entity of the 'Verification': "
+											+ e.getMessage());
+		}
+		catch (IllegalStateException e) {
+			throw new VerifyClientException("the 'Verification' entity is not backed by an input stream or the original entity input stream has already been consumed without buffering the entity data prior consuming: "
+											+ e.getMessage());
+		}
+	}
+
+	@SuppressWarnings("unused")
+	private static String deserializeString(File file) throws IOException {
+		int len;
+		char[] chr = new char[4096];
+		final StringBuffer buffer = new StringBuffer();
+		final FileReader reader = new FileReader(file);
+		try {
+			while ((len = reader.read(chr)) > 0) {
+				buffer.append(chr, 0, len);
+			}
+		}
+		finally {
+			reader.close();
+		}
+		return buffer.toString();
+	}
+
+	public List<File> getFiles() {
+		List<File> filesList = new ArrayList<File>();
+
+		String folderString = System.getProperty("folder");
+		File folder;
+		if (folderString == null)
+			folder = new File(System.getProperty("user.dir") + "/examples");
+		else
+			folder = new File(folderString);
+
+		System.out.println("Folder set to " + folder.getAbsolutePath());
+
+		File[] files = folder.listFiles(new FilenameFilter() {
+
+			@Override
+			public boolean accept(File dir, String name) {
+				return name.endsWith(".json");
+			}
+		});
+
+		for (File f : files) {
+			filesList.add(f);
+		}
+
+		return filesList;
+	}
+
+	public Graph addGraphFromFile(File file) throws JsonParseException, JsonMappingException, IOException, Exception {
+		System.out.println("Parsing graph of file '" + file.getAbsolutePath() + "'...");
+		Graph graph = new ObjectMapper().readValue(file, Graph.class);
+		Response createGraphResponse = createGraph(graph);
+		if (createGraphResponse.getStatus() != Status.CREATED.getStatusCode()) {
+			throw new Exception("Creation of graph contained in file '"	+ file.getAbsolutePath() + "' returned status "
+								+ createGraphResponse.getStatus());
+		}
+		String responseString = createGraphResponse.readEntity(String.class);
+		System.out.println("Response:");
+		System.out.println(responseString);
+		Graph response = new ObjectMapper().readValue(responseString, Graph.class);
+		printGraph(response);
+		return response;
+	}
+
+	public void printGraph(Graph graph) {
+		System.out.println("Graph " + graph.getId());
+		for (Node n : graph.getNodes().values()) {
+			System.out.println("\tNode " + n.getId());
+			System.out.println("\tName " + n.getName());
+			System.out.println("\tFunctional type: " + n.getFunctional_type());
+			for (Neighbour neighbour : n.getNeighbours().values()) {
+				System.out.println("\t\tNeighbour " + neighbour.getId());
+				System.out.println("\t\tName: " + neighbour.getName());
+			}
+		}
+	}
+
+	public Map<String, Graph> addGraphsFromFiles(List<File> files)	throws JsonParseException, JsonMappingException, IOException,
+															Exception {
+		Map<String, Graph> graphs = new HashMap<String, Graph>();
+
+		for (File f : files) {
+			Graph graph = addGraphFromFile(f);
+			graphs.put(f.getName(), graph);
+		}
+
+		for (Map.Entry<String, Graph> graph : graphs.entrySet()) {
+			System.out.println(graph.getKey() + " -> graph " + graph.getValue().getId());
+		}
+		System.out.println("Graphs added");
+
+		return graphs;
+	}
+
+	public static void main(String[] args) throws IOException, Exception {
+		System.out.println("Adding graphs");
+
+		VerifyClient verifyClient = new VerifyClient("http://localhost:8080/verify/api");
+
+		List<File> files = verifyClient.getFiles();
+		Map<String, Graph> graphs = verifyClient.addGraphsFromFiles(files);
+
+		for (Graph g : graphs.values()) {
+			Response response = verifyClient.retrieveGraph(g.getId());
+			String responseString = response.readEntity(String.class);
+
+			System.out.println("Response");
+			System.out.println(responseString);
+			Graph graph = new ObjectMapper().readValue(responseString, Graph.class);
+			System.out.println("Read graph " + graph.getId());
+			System.out.println(response.getStatus());
+		}
+
+		Graph graph = graphs.get("budapest_sat.json");
+		System.out.println("graphId set to " + graph.getId());
+		System.out.println("Getting reachability from 'user1' to 'websever' in 'budapest' graph (expecting SAT)...");
+		Verification verification = verifyClient.getReachability(graph.getId(), "user1", "webserver");
+		System.out.println(verification.getResult());
+		graph = graphs.get("budapest_unsat.json");
+		System.out.println("graphId set to " + graph.getId());
+		System.out.println("Getting reachability from 'user1' to 'websever' in 'budapest' graph (expecting UNSAT)...");
+		verification = verifyClient.getReachability(graph.getId(), "user1", "webserver");
+		System.out.println(verification.getResult());
+
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/client/VerifyClientException.java b/verigraph/src/main/java/it/polito/escape/verify/client/VerifyClientException.java
new file mode 100644
index 0000000..d91d31e
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/client/VerifyClientException.java
@@ -0,0 +1,24 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.client;
+
+
+public class VerifyClientException extends Exception{
+
+	/**
+	 *
+	 */
+	private static final long serialVersionUID = 4794956747093682854L;
+
+	public VerifyClientException(String message){
+		super(message);
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/database/DatabaseClass.java b/verigraph/src/main/java/it/polito/escape/verify/database/DatabaseClass.java
new file mode 100644
index 0000000..7837e51
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/database/DatabaseClass.java
@@ -0,0 +1,175 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.database;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+import com.fasterxml.jackson.core.JsonGenerationException;
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.type.TypeFactory;
+
+import it.polito.escape.verify.exception.InternalServerErrorException;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Neighbour;
+import it.polito.escape.verify.model.Node;
+import it.polito.escape.verify.service.GraphService;
+
+public class DatabaseClass {
+
+	private static final DatabaseClass				instance	= new DatabaseClass();
+
+	private static ConcurrentHashMap<Long, Graph>	graphs;
+
+	private static String							persistenceFile;
+
+	private static boolean							enablePersistence;
+
+	protected DatabaseClass() {
+		initialize();
+		if (enablePersistence)
+			loadDatabase();
+	}
+
+	private void initialize() {
+		graphs = new ConcurrentHashMap<>();
+		enablePersistence = false;
+		persistenceFile = System.getProperty("catalina.base") + "/webapps/verify/json/" + "database.json";
+	}
+
+	private void loadDatabase() {
+		ObjectMapper mapper = new ObjectMapper();
+
+		List<Graph> parsedGraphs = null;
+		try {
+			File databaseFile = new File(persistenceFile);
+			parsedGraphs = mapper.readValue(databaseFile,
+											TypeFactory.defaultInstance().constructCollectionType(	List.class,
+																									Graph.class));
+		}
+		catch (JsonParseException e) {
+			System.out.println("Database not loaded due to a JsonParseException: " + e.getMessage());
+			return;
+		}
+		catch (JsonMappingException e) {
+			System.out.println("Database not loaded due to a JsonMappingException: " + e.getMessage());
+			return;
+		}
+		catch (IOException e) {
+			//retry changing path
+			persistenceFile = "src/main/webapp/json/" + "database.json";
+
+			try {
+				File databaseFile = new File(persistenceFile);
+				parsedGraphs = mapper.readValue(databaseFile,
+						TypeFactory.defaultInstance().constructCollectionType(	List.class,
+								Graph.class));
+			} catch (JsonParseException e1) {
+				System.out.println("Database not loaded due to a JsonParseException: " + e.getMessage());
+				return;
+			} catch (JsonMappingException e1) {
+				System.out.println("Database not loaded due to a JsonMappingException: " + e.getMessage());
+				return;
+			} catch (IOException e1) {
+				System.out.println("Database not loaded due to an IOException: " + e.getMessage());
+				return;
+			}
+		}
+
+		System.out.println("Loading database...");
+
+		for (Graph graph : parsedGraphs) {
+
+			try {
+				GraphService.validateGraph(graph);
+			}
+			catch (Exception e) {
+				System.out.println("Invalid database file: at least one graph is invalid!");
+				return;
+			}
+
+			graph.setId(getNumberOfGraphs() + 1);
+
+			for (Map.Entry<Long, Node> nodeEntry : graph.getNodes().entrySet()) {
+				nodeEntry.getValue().setId(nodeEntry.getKey());
+
+				for (Map.Entry<Long, Neighbour> neighbourEntry : nodeEntry.getValue().getNeighbours().entrySet()) {
+					neighbourEntry.getValue().setId(neighbourEntry.getKey());
+				}
+			}
+
+			graphs.put(graph.getId(), graph);
+		}
+
+		System.out.println("Database loaded!");
+		System.out.println(graphs.size() + " graphs added");
+	}
+
+	public static DatabaseClass getInstance() {
+		return instance;
+	}
+
+	public ConcurrentHashMap<Long, Graph> getGraphs() {
+		return graphs;
+	}
+
+	public synchronized int getNumberOfGraphs() {
+		return graphs.size();
+	}
+
+	public synchronized int getGraphNumberOfNodes(long graphId) {
+		Graph graph = graphs.get(graphId);
+		if (graph == null)
+			return 0;
+		Map<Long, Node> nodes = graph.getNodes();
+		if (nodes == null)
+			return 0;
+		return nodes.size();
+	}
+
+	public static void persistDatabase() {
+		if (!enablePersistence)
+			return;
+		ObjectMapper mapper = new ObjectMapper();
+
+		try {
+			mapper.writeValue(new File(persistenceFile), graphs);
+		}
+		catch (JsonGenerationException e) {
+			throw new InternalServerErrorException("Unable to persist database due to a JsonGenerationException: "
+													+ e.getMessage());
+		}
+		catch (JsonMappingException e) {
+			throw new InternalServerErrorException("Unable to persist database due to a JsonMappingException: "
+													+ e.getMessage());
+		}
+		catch (IOException e) {
+			//retry changing path
+			persistenceFile = "src/main/webapp/json/" + "database.json";
+			try {
+				mapper.writeValue(new File(persistenceFile), graphs);
+			} catch (JsonGenerationException e1) {
+				throw new InternalServerErrorException("Unable to persist database due to a JsonGenerationException: "
+						+ e.getMessage());
+			} catch (JsonMappingException e1) {
+				throw new InternalServerErrorException("Unable to persist database due to a JsonGenerationException: "
+						+ e.getMessage());
+			} catch (IOException e1) {
+				throw new InternalServerErrorException("Unable to persist database due to an IOException: "
+						+ e.getMessage());
+			}
+		}
+	}
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/deserializer/ConfigurationCustomDeserializer.java b/verigraph/src/main/java/it/polito/escape/verify/deserializer/ConfigurationCustomDeserializer.java
new file mode 100644
index 0000000..5cdd084
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/deserializer/ConfigurationCustomDeserializer.java
@@ -0,0 +1,42 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.deserializer;
+
+import java.io.IOException;
+
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.JsonDeserializer;
+import com.fasterxml.jackson.databind.JsonNode;
+
+import it.polito.escape.verify.exception.InternalServerErrorException;
+import it.polito.escape.verify.model.Configuration;
+
+public class ConfigurationCustomDeserializer extends JsonDeserializer<Configuration> {
+
+	@Override
+	public Configuration deserialize(JsonParser jp, DeserializationContext ctxt)	throws IOException,
+																					JsonProcessingException {
+		try {
+			JsonNode root = jp.getCodec().readTree(jp);
+
+			return new Configuration("", "", root);
+		}
+		catch (JsonProcessingException e) {
+			throw new InternalServerErrorException("Error parsing configuration: " + e.getMessage());
+		}
+		catch (IOException e) {
+			throw new InternalServerErrorException("I/O error parsing configuration: " + e.getMessage());
+		}
+
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/deserializer/GraphCustomDeserializer.java b/verigraph/src/main/java/it/polito/escape/verify/deserializer/GraphCustomDeserializer.java
new file mode 100644
index 0000000..f71c996
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/deserializer/GraphCustomDeserializer.java
@@ -0,0 +1,87 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.deserializer;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.JsonDeserializer;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.type.TypeFactory;
+
+import it.polito.escape.verify.exception.BadRequestException;
+import it.polito.escape.verify.exception.InternalServerErrorException;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Node;
+
+
+/**
+ * The Class GraphCustomDeserializer is a custom deserializer for a Graph object
+ */
+public class GraphCustomDeserializer extends JsonDeserializer<Graph>{
+
+	/* (non-Javadoc)
+	 * @see com.fasterxml.jackson.databind.JsonDeserializer#deserialize(com.fasterxml.jackson.core.JsonParser, com.fasterxml.jackson.databind.DeserializationContext)
+	 */
+	@Override
+	public Graph deserialize(JsonParser jp, DeserializationContext context){
+		JsonNode root = null;
+		try {
+			root = jp.getCodec().readTree(jp);
+		}
+		catch (JsonProcessingException e) {
+			throw new InternalServerErrorException("Error parsing a graph: " + e.getMessage());
+		}
+		catch (IOException e) {
+			throw new InternalServerErrorException("I/O error parsing a graph: " + e.getMessage());
+		}
+
+		JsonNode nodesJson = root.get("nodes");
+
+		if(nodesJson == null)
+			throw new BadRequestException("Invalid graph");
+
+		List<Node> nodeList = null;
+		try {
+			nodeList = new ObjectMapper().readValue(nodesJson.toString(), TypeFactory.defaultInstance().constructCollectionType(List.class, Node.class));
+		}
+		catch (JsonParseException e) {
+			throw new BadRequestException("Invalid content for a graph: " + e.getMessage());
+		}
+		catch (JsonMappingException e) {
+			throw new BadRequestException("Invalid input json structure for a graph: " + e.getMessage());
+		}
+		catch (IOException e) {
+			throw new InternalServerErrorException("I/O error parsing a graph: " + e.getMessage());
+		}
+
+		Graph graph = new Graph();
+		if(root.get("id") != null){
+			long graphId = root.get("id").asLong();
+			graph.setId(graphId);
+		}
+		Map<Long, Node> nodes = graph.getNodes();
+
+		long numberOfNodes = 0;
+		for (Node node : nodeList){
+			nodes.put(++numberOfNodes, node);
+		}
+		return graph;
+
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/deserializer/NodeCustomDeserializer.java b/verigraph/src/main/java/it/polito/escape/verify/deserializer/NodeCustomDeserializer.java
new file mode 100644
index 0000000..fb451db
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/deserializer/NodeCustomDeserializer.java
@@ -0,0 +1,92 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.deserializer;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.JsonDeserializer;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.type.TypeFactory;
+
+import it.polito.escape.verify.exception.BadRequestException;
+import it.polito.escape.verify.exception.InternalServerErrorException;
+import it.polito.escape.verify.model.Configuration;
+import it.polito.escape.verify.model.Neighbour;
+import it.polito.escape.verify.model.Node;
+
+public class NodeCustomDeserializer extends JsonDeserializer<Node> {
+
+	@Override
+	public Node deserialize(JsonParser jp, DeserializationContext context) {
+
+		try {
+			JsonNode root = jp.getCodec().readTree(jp);
+			JsonNode neighboursJson = root.get("neighbours");
+			JsonNode configurationJson = root.get("configuration");
+
+			String nodeName = root.get("name").asText();
+			String functionalType = root.get("functional_type").asText();
+
+			Node node = new Node();
+			if(root.get("id") != null){
+				long nodeId = root.get("id").asLong();
+				node.setId(nodeId);
+			}
+			node.setName(nodeName);
+			node.setFunctional_type(functionalType);
+
+			if (configurationJson == null)
+				node.setConfiguration(new Configuration(node.getName(), "", new ObjectMapper().createArrayNode()));
+			else {
+				Configuration conf = node.getConfiguration();
+				conf.setId(node.getName());
+				conf.setDescription("");
+				conf.setConfiguration(configurationJson);
+			}
+
+			try {
+				List<Neighbour> neighbourList = new ObjectMapper().readValue(	neighboursJson.toString(),
+																				TypeFactory	.defaultInstance()
+																							.constructCollectionType(	List.class,
+																														Neighbour.class));
+				Map<Long, Neighbour> neighbours = node.getNeighbours();
+
+				long numberOfNeighbours = 0;
+				for (Neighbour neighbour : neighbourList) {
+					neighbours.put(++numberOfNeighbours, neighbour);
+				}
+
+				return node;
+			}
+			catch (JsonParseException e) {
+				throw new BadRequestException("Invalid content for a node: " + e.getMessage());
+			}
+			catch (JsonMappingException e) {
+				throw new BadRequestException("Invalid input json structure for a node: " + e.getMessage());
+			}
+		}
+		catch (JsonProcessingException e) {
+			throw new InternalServerErrorException("Error parsing a node: " + e.getMessage());
+		}
+		catch (IOException e) {
+			throw new InternalServerErrorException("I/O error parsing a node: " + e.getMessage());
+		}
+
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/deserializer/PathsMessageBodyReader.java b/verigraph/src/main/java/it/polito/escape/verify/deserializer/PathsMessageBodyReader.java
new file mode 100644
index 0000000..3b54503
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/deserializer/PathsMessageBodyReader.java
@@ -0,0 +1,52 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.deserializer;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Type;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.ProcessingException;
+import javax.ws.rs.WebApplicationException;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.MultivaluedMap;
+import javax.ws.rs.ext.MessageBodyReader;
+import javax.ws.rs.ext.Provider;
+import javax.xml.bind.JAXBContext;
+import javax.xml.bind.JAXBException;
+
+import it.polito.nffg.neo4j.jaxb.Paths;
+
+@Provider
+@Consumes(MediaType.APPLICATION_XML)
+public class PathsMessageBodyReader implements MessageBodyReader<Paths>{
+
+	@Override
+	public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
+		return type == Paths.class;
+	}
+
+	@Override
+	public Paths readFrom(Class<Paths> type, Type genericType, Annotation[] annotations, MediaType mediaType,
+			MultivaluedMap<String, String> httpHeaders, InputStream entityStream)
+					throws IOException, WebApplicationException {
+		try {
+	        JAXBContext jaxbContext = JAXBContext.newInstance(Paths.class);
+	        Paths paths = (Paths) jaxbContext.createUnmarshaller()
+	            .unmarshal(entityStream);
+	        return paths;
+	    } catch (JAXBException jaxbException) {
+	        throw new ProcessingException("Error deserializing a Paths object.",
+	            jaxbException);
+	    }
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/exception/BadRequestException.java b/verigraph/src/main/java/it/polito/escape/verify/exception/BadRequestException.java
new file mode 100644
index 0000000..abbdbf0
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/exception/BadRequestException.java
@@ -0,0 +1,23 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.exception;
+
+public class BadRequestException extends RuntimeException {
+
+	/**
+	 *
+	 */
+	private static final long serialVersionUID = -548472179073745084L;
+
+	public BadRequestException(String message) {
+		super(message);
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/exception/BadRequestExceptionMapper.java b/verigraph/src/main/java/it/polito/escape/verify/exception/BadRequestExceptionMapper.java
new file mode 100644
index 0000000..8f1ba9c
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/exception/BadRequestExceptionMapper.java
@@ -0,0 +1,30 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.exception;
+
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.Response.Status;
+import javax.ws.rs.ext.ExceptionMapper;
+import javax.ws.rs.ext.Provider;
+
+import it.polito.escape.verify.model.ErrorMessage;
+
+@Provider
+public class BadRequestExceptionMapper implements ExceptionMapper<BadRequestException> {
+
+	@Override
+	public Response toResponse(BadRequestException exception) {
+		ErrorMessage errorMessage = new ErrorMessage(	exception.getMessage(),
+														400,
+														"http://localhost:8080/verify/api-docs/");
+		return Response.status(Status.BAD_REQUEST).entity(errorMessage).build();
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/exception/DataNotFoundException.java b/verigraph/src/main/java/it/polito/escape/verify/exception/DataNotFoundException.java
new file mode 100644
index 0000000..5cd1806
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/exception/DataNotFoundException.java
@@ -0,0 +1,23 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.exception;
+
+public class DataNotFoundException extends RuntimeException {
+
+	/**
+	 *
+	 */
+	private static final long serialVersionUID = -6012364193903183208L;
+
+	public DataNotFoundException(String message) {
+		super(message);
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/exception/DataNotFoundExceptionMapper.java b/verigraph/src/main/java/it/polito/escape/verify/exception/DataNotFoundExceptionMapper.java
new file mode 100644
index 0000000..62e3556
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/exception/DataNotFoundExceptionMapper.java
@@ -0,0 +1,30 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.exception;
+
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.Response.Status;
+import javax.ws.rs.ext.ExceptionMapper;
+import javax.ws.rs.ext.Provider;
+
+import it.polito.escape.verify.model.ErrorMessage;
+
+@Provider
+public class DataNotFoundExceptionMapper implements ExceptionMapper<DataNotFoundException> {
+
+	@Override
+	public Response toResponse(DataNotFoundException exception) {
+		ErrorMessage errorMessage = new ErrorMessage(	exception.getMessage(),
+														404,
+														"http://localhost:8080/verify/api-docs/");
+		return Response.status(Status.NOT_FOUND).entity(errorMessage).build();
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/exception/ForbiddenException.java b/verigraph/src/main/java/it/polito/escape/verify/exception/ForbiddenException.java
new file mode 100644
index 0000000..dc79e97
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/exception/ForbiddenException.java
@@ -0,0 +1,23 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.exception;
+
+public class ForbiddenException extends RuntimeException {
+
+	/**
+	 *
+	 */
+	private static final long serialVersionUID = -4658914972167044321L;
+
+	public ForbiddenException(String message) {
+		super(message);
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/exception/ForbiddenExceptionMapper.java b/verigraph/src/main/java/it/polito/escape/verify/exception/ForbiddenExceptionMapper.java
new file mode 100644
index 0000000..d060b8b
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/exception/ForbiddenExceptionMapper.java
@@ -0,0 +1,30 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.exception;
+
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.Response.Status;
+import javax.ws.rs.ext.ExceptionMapper;
+import javax.ws.rs.ext.Provider;
+
+import it.polito.escape.verify.model.ErrorMessage;
+
+@Provider
+public class ForbiddenExceptionMapper implements ExceptionMapper<ForbiddenException> {
+
+	@Override
+	public Response toResponse(ForbiddenException exception) {
+		ErrorMessage errorMessage = new ErrorMessage(	exception.getMessage(),
+														403,
+														"http://localhost:8080/verify/api-docs/");
+		return Response.status(Status.FORBIDDEN).entity(errorMessage).build();
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/exception/GenericExceptionMapper.java b/verigraph/src/main/java/it/polito/escape/verify/exception/GenericExceptionMapper.java
new file mode 100644
index 0000000..96f7caa
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/exception/GenericExceptionMapper.java
@@ -0,0 +1,29 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.exception;
+
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.Response.Status;
+import javax.ws.rs.ext.ExceptionMapper;
+
+import it.polito.escape.verify.model.ErrorMessage;
+
+// @Provider
+public class GenericExceptionMapper implements ExceptionMapper<Throwable> {
+
+	@Override
+	public Response toResponse(Throwable exception) {
+		ErrorMessage errorMessage = new ErrorMessage("Generic exception: "	+ exception.getMessage(),
+														500,
+														"http://localhost:8080/verify/api-docs/");
+		return Response.status(Status.INTERNAL_SERVER_ERROR).entity(errorMessage).build();
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/exception/InternalServerErrorException.java b/verigraph/src/main/java/it/polito/escape/verify/exception/InternalServerErrorException.java
new file mode 100644
index 0000000..877edb5
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/exception/InternalServerErrorException.java
@@ -0,0 +1,23 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.exception;
+
+public class InternalServerErrorException extends RuntimeException {
+
+	/**
+	 *
+	 */
+	private static final long serialVersionUID = 156815197709461502L;
+
+	public InternalServerErrorException(String message) {
+		super(message);
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/exception/InternalServerErrorExceptionMapper.java b/verigraph/src/main/java/it/polito/escape/verify/exception/InternalServerErrorExceptionMapper.java
new file mode 100644
index 0000000..02b6765
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/exception/InternalServerErrorExceptionMapper.java
@@ -0,0 +1,30 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.exception;
+
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.Response.Status;
+import javax.ws.rs.ext.ExceptionMapper;
+import javax.ws.rs.ext.Provider;
+
+import it.polito.escape.verify.model.ErrorMessage;
+
+@Provider
+public class InternalServerErrorExceptionMapper implements ExceptionMapper<InternalServerErrorException> {
+
+	@Override
+	public Response toResponse(InternalServerErrorException exception) {
+		ErrorMessage errorMessage = new ErrorMessage(	exception.getMessage(),
+														500,
+														"http://localhost:8080/verify/api-docs/");
+		return Response.status(Status.INTERNAL_SERVER_ERROR).entity(errorMessage).build();
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/model/Configuration.java b/verigraph/src/main/java/it/polito/escape/verify/model/Configuration.java
new file mode 100644
index 0000000..3498a10
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/model/Configuration.java
@@ -0,0 +1,75 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.model;
+
+import javax.xml.bind.annotation.XmlRootElement;
+import javax.xml.bind.annotation.XmlTransient;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import it.polito.escape.verify.deserializer.ConfigurationCustomDeserializer;
+import it.polito.escape.verify.serializer.CustomConfigurationSerializer;
+
+@XmlRootElement
+@ApiModel("Configuration")
+@JsonSerialize(using = CustomConfigurationSerializer.class)
+@JsonDeserialize(using = ConfigurationCustomDeserializer.class)
+public class Configuration {
+
+	@ApiModelProperty(required = false, hidden = true)
+	@XmlTransient
+	private String		id;
+
+	@ApiModelProperty(required = false)
+	@XmlTransient
+	private String		description	= "";
+
+	@ApiModelProperty(required = true)
+	private JsonNode	configuration;
+
+	public Configuration() {
+
+	}
+
+	public Configuration(String id, String description, JsonNode configuration) {
+		this.id = id;
+		this.description = description;
+		this.configuration = configuration;
+	}
+
+	public String getId() {
+		return id;
+	}
+
+	public void setId(String id) {
+		this.id = id;
+	}
+
+	public String getDescription() {
+		return description;
+	}
+
+	public void setDescription(String description) {
+		this.description = description;
+	}
+
+	public JsonNode getConfiguration() {
+		return configuration;
+	}
+
+	public void setConfiguration(JsonNode configuration) {
+		this.configuration = configuration;
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/model/Entry.java b/verigraph/src/main/java/it/polito/escape/verify/model/Entry.java
new file mode 100644
index 0000000..f2fdf14
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/model/Entry.java
@@ -0,0 +1,37 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.model;
+
+public class Entry {
+	private String	direction;
+	private String	destination;
+
+	public Entry(String direction, String destination) {
+		this.direction = direction;
+		this.destination = destination;
+	}
+
+	public String getDirection() {
+		return direction;
+	}
+
+	public void setDirection(String direction) {
+		this.direction = direction;
+	}
+
+	public String getDestination() {
+		return destination;
+	}
+
+	public void setDestination(String destination) {
+		this.destination = destination;
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/model/ErrorMessage.java b/verigraph/src/main/java/it/polito/escape/verify/model/ErrorMessage.java
new file mode 100644
index 0000000..e0e79d3
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/model/ErrorMessage.java
@@ -0,0 +1,62 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.model;
+
+import javax.xml.bind.annotation.XmlRootElement;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+
+@ApiModel(value = "Error")
+@XmlRootElement
+public class ErrorMessage {
+
+	@ApiModelProperty(example = "Error message")
+	private String	errorMessage;
+	@ApiModelProperty(allowableValues = "400,403,404,500", value = "HTTP error code", example = "[400,403,404,500]")
+	private int		errorCode;
+	@ApiModelProperty(example = "http://localhost:8080/verify/api-docs/")
+	private String	documentation;
+
+	public ErrorMessage() {
+
+	}
+
+	public ErrorMessage(String errorMessage, int errorCode, String documentation) {
+		this.errorMessage = errorMessage;
+		this.errorCode = errorCode;
+		this.documentation = documentation;
+	}
+
+	public String getErrorMessage() {
+		return errorMessage;
+	}
+
+	public void setErrorMessage(String errorMessage) {
+		this.errorMessage = errorMessage;
+	}
+
+	public int getErrorCode() {
+		return errorCode;
+	}
+
+	public void setErrorCode(int errorCode) {
+		this.errorCode = errorCode;
+	}
+
+	public String getDocumentation() {
+		return documentation;
+	}
+
+	public void setDocumentation(String documentation) {
+		this.documentation = documentation;
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/model/Graph.java b/verigraph/src/main/java/it/polito/escape/verify/model/Graph.java
new file mode 100644
index 0000000..44a2273
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/model/Graph.java
@@ -0,0 +1,105 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.model;
+
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+
+import javax.xml.bind.annotation.XmlRootElement;
+import javax.xml.bind.annotation.XmlTransient;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import it.polito.escape.verify.deserializer.GraphCustomDeserializer;
+import it.polito.escape.verify.serializer.CustomMapSerializer;
+
+@ApiModel(value = "Graph")
+@XmlRootElement
+@JsonDeserialize(using = GraphCustomDeserializer.class)
+@JsonInclude(JsonInclude.Include.NON_EMPTY)
+public class Graph {
+
+	@ApiModelProperty(required = false, hidden = true)
+	@XmlTransient
+	private long			id;
+
+	@ApiModelProperty(name = "nodes", notes = "Nodes", dataType = "List[it.polito.escape.verify.model.Node]")
+	private Map<Long, Node>	nodes	= new HashMap<Long, Node>();
+
+	@ApiModelProperty(required = false, hidden = true)
+	@XmlTransient
+	private Set<Link>		links	= new HashSet<Link>();
+
+	public Graph() {
+
+	}
+
+	public Graph(long id) {
+		this.id = id;
+	}
+
+	public long getId() {
+		return id;
+	}
+
+	public void setId(long id) {
+		this.id = id;
+	}
+
+	@JsonSerialize(using = CustomMapSerializer.class)
+	public Map<Long, Node> getNodes() {
+		return nodes;
+	}
+
+	public void setNodes(Map<Long, Node> nodes) {
+		this.nodes = nodes;
+	}
+
+	@XmlTransient
+	public Set<Link> getLinks() {
+		return links;
+	}
+
+	public void setLinks(Set<Link> links) {
+		this.links = links;
+	}
+
+	public void addLink(String url, String rel) {
+		Link link = new Link();
+		link.setLink(url);
+		link.setRel(rel);
+		links.add(link);
+	}
+
+	public Node searchNodeByName(String name) {
+		for (Node node : this.nodes.values()) {
+			if (node.getName().equals(name))
+				return node;
+		}
+		return null;
+	}
+
+	public int nodesWithName(String name) {
+		int occurrences = 0;
+		for (Node node : this.nodes.values()) {
+			if (node.getName().equals(name))
+				occurrences++;
+
+		}
+		return occurrences;
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/model/Link.java b/verigraph/src/main/java/it/polito/escape/verify/model/Link.java
new file mode 100644
index 0000000..dc2b4c5
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/model/Link.java
@@ -0,0 +1,71 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.model;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+
+@ApiModel(value = "Link")
+public class Link {
+	@ApiModelProperty(required = false, hidden = true)
+	private String	link;
+	@ApiModelProperty(required = false, hidden = true)
+	private String	rel;
+
+	public String getLink() {
+		return link;
+	}
+
+	public void setLink(String link) {
+		this.link = link;
+	}
+
+	public String getRel() {
+		return rel;
+	}
+
+	public void setRel(String rel) {
+		this.rel = rel;
+	}
+
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+		result = prime * result + ((link == null) ? 0 : link.hashCode());
+		result = prime * result + ((rel == null) ? 0 : rel.hashCode());
+		return result;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (obj == null)
+			return false;
+		if (getClass() != obj.getClass())
+			return false;
+		Link other = (Link) obj;
+		if (link == null) {
+			if (other.link != null)
+				return false;
+		}
+		else if (!link.equals(other.link))
+			return false;
+		if (rel == null) {
+			if (other.rel != null)
+				return false;
+		}
+		else if (!rel.equals(other.rel))
+			return false;
+		return true;
+	}
+
+}
\ No newline at end of file
diff --git a/verigraph/src/main/java/it/polito/escape/verify/model/Neighbour.java b/verigraph/src/main/java/it/polito/escape/verify/model/Neighbour.java
new file mode 100644
index 0000000..4b1206c
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/model/Neighbour.java
@@ -0,0 +1,70 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.model;
+
+import javax.xml.bind.annotation.XmlTransient;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+
+@ApiModel(value = "Neighbour")
+public class Neighbour {
+
+	@ApiModelProperty(required = false, hidden = true)
+	@XmlTransient
+	private long	id;
+
+	@ApiModelProperty(	required = true,
+						example = "nat",
+						value = "The neighbour name must refer to an existing node of the same graph")
+	private String	name;
+
+	public Neighbour() {
+
+	}
+
+	public Neighbour(long id, String name) {
+		this.id = id;
+		this.name = name;
+	}
+
+	public long getId() {
+		return id;
+	}
+
+	public void setId(long id) {
+		this.id = id;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+		result = prime * result + ((name == null) ? 0 : name.hashCode());
+		return result;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		else
+			return false;
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/model/Node.java b/verigraph/src/main/java/it/polito/escape/verify/model/Node.java
new file mode 100644
index 0000000..9f667ce
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/model/Node.java
@@ -0,0 +1,152 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.model;
+
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+
+import javax.xml.bind.annotation.XmlRootElement;
+import javax.xml.bind.annotation.XmlTransient;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import it.polito.escape.verify.deserializer.NodeCustomDeserializer;
+import it.polito.escape.verify.serializer.CustomMapSerializer;
+
+@ApiModel(value = "Node")
+@XmlRootElement
+@JsonDeserialize(using = NodeCustomDeserializer.class)
+@JsonInclude(JsonInclude.Include.NON_EMPTY)
+public class Node {
+
+	@ApiModelProperty(required = false, hidden = true)
+	@XmlTransient
+	private long					id;
+
+	@ApiModelProperty(required = true, example = "ep", value = "The name of the node can be any string")
+	private String					name;
+
+	@ApiModelProperty(	required = true,
+						example = "endpoint",
+						value = "The functional types that are currently supported are: endpoint, firewall, nat, antispam, webclient, webserver, mailclient, mailserver")
+	private String					functional_type;
+
+	@ApiModelProperty(required = false, hidden = true)
+	@XmlTransient
+	private Configuration			configuration	= new Configuration();
+
+	@ApiModelProperty(	name = "neighbours",
+						notes = "Neighbours",
+						dataType = "List[it.polito.escape.verify.model.Neighbour]")
+	private Map<Long, Neighbour>	neighbours		= new HashMap<Long, Neighbour>();
+
+	@ApiModelProperty(required = false, hidden = true)
+	@XmlTransient
+	private Set<Link>				links			= new HashSet<>();
+
+	public Node() {
+
+	}
+
+	public Node(long id, String name, String functional_type, Configuration configuration) {
+		this.id = id;
+		this.name = name;
+		this.functional_type = functional_type;
+		this.configuration = configuration;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public String getFunctional_type() {
+		return functional_type;
+	}
+
+	public void setFunctional_type(String functional_type) {
+		this.functional_type = functional_type;
+	}
+
+	// @XmlTransient
+	public Configuration getConfiguration() {
+		return configuration;
+	}
+
+	public void setConfiguration(Configuration configuration) {
+		this.configuration = configuration;
+	}
+
+	@JsonSerialize(using = CustomMapSerializer.class)
+	public Map<Long, Neighbour> getNeighbours() {
+		return neighbours;
+	}
+
+	public void setNeighbours(Map<Long, Neighbour> neighbours) {
+		this.neighbours = neighbours;
+	}
+
+	public long getId() {
+		return this.id;
+	}
+
+	public void setId(long id) {
+		this.id = id;
+	}
+
+	public Set<Link> getLinks() {
+		return links;
+	}
+
+	public void setLinks(Set<Link> links) {
+		this.links = links;
+	}
+
+	public void addLink(String url, String rel) {
+		Link link = new Link();
+		link.setLink(url);
+		link.setRel(rel);
+		links.add(link);
+	}
+
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+		result = prime * result + ((name == null) ? 0 : name.hashCode());
+		return result;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		else
+			return false;
+	}
+
+	public Neighbour searchNeighbourByName(String name) {
+		for (Neighbour neighbour : this.neighbours.values()) {
+			if (neighbour.getName().equals(name))
+				return neighbour;
+		}
+		return null;
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/model/Test.java b/verigraph/src/main/java/it/polito/escape/verify/model/Test.java
new file mode 100644
index 0000000..1127abc
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/model/Test.java
@@ -0,0 +1,62 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.model;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Test {
+	private List<Node>	nodes	= new ArrayList<Node>();
+	private String		result;
+
+	public Test() {
+
+	}
+
+	public Test(List<Node> paths, int result) {
+		switch (result) {
+			case 0:
+				this.result = "SAT";
+				break;
+			case -1:
+				this.result = "UNSAT";
+				break;
+			case -2:
+				this.result = "UNKNOWN";
+				break;
+			default:
+				this.result = "UNKNWON";
+				break;
+		}
+		this.nodes = paths;
+	}
+
+	public Test(List<Node> paths, String result) {
+		this.nodes = paths;
+		this.result = result;
+	}
+
+	public List<Node> getPath() {
+		return nodes;
+	}
+
+	public void setPath(List<Node> paths) {
+		this.nodes = paths;
+	}
+
+	public String getResult() {
+		return result;
+	}
+
+	public void setResult(String result) {
+		this.result = result;
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/model/Verification.java b/verigraph/src/main/java/it/polito/escape/verify/model/Verification.java
new file mode 100644
index 0000000..60b4ddb
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/model/Verification.java
@@ -0,0 +1,69 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.model;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+
+@ApiModel(value = "Policy verification")
+public class Verification {
+
+	@ApiModelProperty(example = "SAT | UNSAT | UNKNOWN")
+	private String		result;
+	private String comment;
+	private List<Test>	tests	= new ArrayList<Test>();
+
+	public Verification() {
+
+	}
+
+	public Verification(String result) {
+		this.result = result;
+	}
+
+	public Verification(String result, List<Test> tests, String comment){
+		this.result = result;
+		this.tests = tests;
+		this.comment = comment;
+	}
+
+	public Verification(String result, String comment){
+		this.result = result;
+		this.comment = comment;
+	}
+
+	public String getResult() {
+		return result;
+	}
+
+	public void setResult(String result) {
+		this.result = result;
+	}
+
+	public List<Test> getTests() {
+		return tests;
+	}
+
+	public void setTests(List<Test> tests) {
+		this.tests = tests;
+	}
+
+	public String getComment() {
+		return comment;
+	}
+
+	public void setComment(String comment) {
+		this.comment = comment;
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/model/jaxb.properties b/verigraph/src/main/java/it/polito/escape/verify/model/jaxb.properties
new file mode 100644
index 0000000..5837a4c
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/model/jaxb.properties
@@ -0,0 +1 @@
+javax.xml.bind.context.factory=org.eclipse.persistence.jaxb.JAXBContextFactory
\ No newline at end of file
diff --git a/verigraph/src/main/java/it/polito/escape/verify/resources/GraphResource.java b/verigraph/src/main/java/it/polito/escape/verify/resources/GraphResource.java
new file mode 100644
index 0000000..e610f1d
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/resources/GraphResource.java
@@ -0,0 +1,167 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.resources;
+
+import java.net.URI;
+import java.util.List;
+
+import javax.ws.rs.BeanParam;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.PUT;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.Context;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.UriInfo;
+
+import io.swagger.annotations.Api;
+import io.swagger.annotations.ApiOperation;
+import io.swagger.annotations.ApiParam;
+import io.swagger.annotations.ApiResponse;
+import io.swagger.annotations.ApiResponses;
+import it.polito.escape.verify.model.ErrorMessage;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Verification;
+import it.polito.escape.verify.resources.beans.VerificationBean;
+import it.polito.escape.verify.service.GraphService;
+import it.polito.escape.verify.service.VerificationService;
+
+@Path("/graphs")
+@Api(value = "/graphs", description = "Manage graphs")
+@Consumes(MediaType.APPLICATION_JSON)
+@Produces(MediaType.APPLICATION_JSON)
+public class GraphResource {
+	GraphService		graphService		= new GraphService();
+	VerificationService	verificationService	= new VerificationService();
+
+	@GET
+	@ApiOperation(	httpMethod = "GET",
+					value = "Returns all graphs",
+					notes = "Returns an array of graphs",
+					response = Graph.class,
+					responseContainer = "List")
+	@ApiResponses(value = { @ApiResponse(	code = 200,
+											message = "All the graphs have been returned in the message body",
+											response = Graph.class,
+											responseContainer = "List"),
+	                        @ApiResponse(code = 500, message = "Internal server error", response = ErrorMessage.class)})
+	public List<Graph> getGraphs() {
+		return graphService.getAllGraphs();
+	}
+
+	@POST
+	@ApiOperation(	httpMethod = "POST",
+					value = "Creates a graph",
+					notes = "Creates a signle graph",
+					response = Response.class)
+	@ApiResponses(value = {	@ApiResponse(code = 400, message = "Invalid graph supplied", response = ErrorMessage.class),
+							@ApiResponse(code = 500, message = "Internal server error", response = ErrorMessage.class),
+							@ApiResponse(code = 201, message = "Graph successfully created", response = Graph.class) })
+	public Response addGraph(	@ApiParam(value = "New graph object", required = true) Graph graph,
+								@Context UriInfo uriInfo) {
+		Graph newGraph = graphService.addGraph(graph);
+		String newId = String.valueOf(newGraph.getId());
+		URI uri = uriInfo.getAbsolutePathBuilder().path(newId).build();
+		return Response.created(uri).entity(newGraph).build();
+	}
+
+	@GET
+	@Path("/{graphId}")
+	@ApiOperation(	httpMethod = "GET",
+					value = "Returns a graph",
+					notes = "Returns a signle graph",
+					response = Graph.class)
+	@ApiResponses(value = {	@ApiResponse(code = 403, message = "Invalid graph id", response = ErrorMessage.class),
+							@ApiResponse(code = 404, message = "Graph not found", response = ErrorMessage.class),
+							@ApiResponse(code = 500, message = "Internal server error", response = ErrorMessage.class),
+							@ApiResponse(	code = 200,
+											message = "The requested graph has been returned in the message body",
+											response = Graph.class) })
+	public Graph getGraph(	@ApiParam(value = "Graph id", required = true) @PathParam("graphId") long graphId,
+							@Context UriInfo uriInfo) {
+		Graph graph = graphService.getGraph(graphId);
+		graph.addLink(getUriForSelf(uriInfo, graph), "self");
+		graph.addLink(getUriForNodes(uriInfo, graph), "nodes");
+		return graph;
+	}
+
+	@PUT
+	@Path("/{graphId}")
+	@ApiOperation(httpMethod = "PUT", value = "Edits a graph", notes = "Edits a single graph", response = Graph.class)
+	@ApiResponses(value = {	@ApiResponse(code = 400, message = "Invalid graph object", response = ErrorMessage.class),
+							@ApiResponse(code = 403, message = "Invalid graph id", response = ErrorMessage.class),
+							@ApiResponse(code = 404, message = "Graph not found", response = ErrorMessage.class),
+							@ApiResponse(code = 500, message = "Internal server error", response = ErrorMessage.class),
+							@ApiResponse(code = 200, message = "Graph edited successfully", response = Graph.class) })
+	public Graph updateGraph(	@ApiParam(value = "Graph id", required = true) @PathParam("graphId") long id,
+								@ApiParam(value = "Updated graph object", required = true) Graph graph) {
+		graph.setId(id);
+		return graphService.updateGraph(graph);
+	}
+
+	@DELETE
+	@Path("/{graphId}")
+	@ApiOperation(httpMethod = "DELETE", value = "Deletes a graph", notes = "Deletes a signle graph")
+	@ApiResponses(value = {	@ApiResponse(code = 403, message = "Invalid graph id", response = ErrorMessage.class),
+							@ApiResponse(code = 500, message = "Internal server error", response = ErrorMessage.class),
+							@ApiResponse(code = 204, message = "Graph successfully deleted") })
+	public void deleteGraph(@ApiParam(value = "Graph id", required = true) @PathParam("graphId") long id) {
+		graphService.removeGraph(id);
+	}
+
+	@GET
+	@Path("/{graphId}/policy")
+	@ApiOperation(	httpMethod = "GET",
+					value = "Verifies a given policy in a graph",
+					notes = "In order to verify a given policy (e.g. 'reachability') all nodes of the desired graph must have a valid configuration.")
+	@ApiResponses(value = {	@ApiResponse(	code = 403,
+											message = "Invalid graph id or invalid configuration for source and/or destination node",
+											response = ErrorMessage.class),
+							@ApiResponse(	code = 404,
+											message = "Graph not found or source node not found or destination node not found or configuration for source and/or destination node not available",
+											response = ErrorMessage.class),
+							@ApiResponse(code = 500, message = "Internal server error", response = ErrorMessage.class),})
+	public Verification verifyGraph(@ApiParam(value = "Graph id", required = true) @PathParam("graphId") long graphId,
+									@ApiParam(	value = "'source' and 'destination' must refer to names of existing nodes in the same graph, 'type' refers to the required verification between the two (e.g. 'reachability')",
+												required = true) @BeanParam VerificationBean verificationBean) {
+
+		return verificationService.verify(graphId, verificationBean);
+	}
+
+	private String getUriForSelf(UriInfo uriInfo, Graph graph) {
+		String uri = uriInfo.getBaseUriBuilder()
+							.path(GraphResource.class)
+							.path(Long.toString(graph.getId()))
+							.build()
+							.toString();
+		return uri;
+	}
+
+	private String getUriForNodes(UriInfo uriInfo, Graph graph) {
+		String uri = uriInfo.getBaseUriBuilder()
+							.path(GraphResource.class)
+							.path(GraphResource.class, "getNodeResource")
+							// .path(NodeResource.class)
+							.resolveTemplate("graphId", graph.getId())
+							.build()
+							.toString();
+		return uri;
+	}
+
+	@Path("/{graphId}/nodes")
+	public NodeResource getNodeResource() {
+		return new NodeResource();
+	}
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/resources/NeighbourResource.java b/verigraph/src/main/java/it/polito/escape/verify/resources/NeighbourResource.java
new file mode 100644
index 0000000..63376da
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/resources/NeighbourResource.java
@@ -0,0 +1,141 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.resources;
+
+import java.net.URI;
+import java.util.List;
+
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.PUT;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.Context;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.UriInfo;
+
+import io.swagger.annotations.Api;
+import io.swagger.annotations.ApiOperation;
+import io.swagger.annotations.ApiParam;
+import io.swagger.annotations.ApiResponse;
+import io.swagger.annotations.ApiResponses;
+import it.polito.escape.verify.model.ErrorMessage;
+import it.polito.escape.verify.model.Neighbour;
+import it.polito.escape.verify.service.NeighbourService;
+
+//@Path("/")
+@Api( hidden= true, value = "", description = "Manage neighbours" )
+@Produces(MediaType.APPLICATION_JSON)
+@Consumes(MediaType.APPLICATION_JSON)
+public class NeighbourResource {
+	private NeighbourService neighboursService = new NeighbourService();
+
+	@GET
+    @ApiOperation(
+    	    httpMethod = "GET",
+    	    value = "Returns all neighbours of a given node belonging to a given graph",
+    	    notes = "Returns an array of neighbours of a given node belonging to a given graph",
+    	    response = Neighbour.class,
+    	    responseContainer = "List")
+	@ApiResponses(value = { @ApiResponse(code = 403, message = "Invalid graph and/or node id", response=ErrorMessage.class),
+							@ApiResponse(code = 404, message = "Graph and/or node not found", response=ErrorMessage.class),
+							@ApiResponse(code = 500, message = "Internal server error", response = ErrorMessage.class),
+							@ApiResponse(code = 200, message = "All the neighbours have been returned in the message body", response=Neighbour.class, responseContainer="List")})
+	public List<Neighbour> getAllNeighbours(
+			@ApiParam(value = "Graph id", required = true) @PathParam("graphId") long graphId,
+			@ApiParam(value = "Node id", required = true) @PathParam("nodeId") long nodeId){
+		return neighboursService.getAllNeighbours(graphId, nodeId);
+	}
+
+	@POST
+    @ApiOperation(
+    	    httpMethod = "POST",
+    	    value = "Adds a neighbour to a given node belonging to a given graph",
+    	    notes = "Adds single neighbour to a given node belonging to a given graph",
+    	    response = Neighbour.class)
+	@ApiResponses(value = { @ApiResponse(code = 403, message = "Invalid graph and/or node id", response=ErrorMessage.class),
+							@ApiResponse(code = 404, message = "Graph and/or node not found", response=ErrorMessage.class),
+							@ApiResponse(code = 400, message = "Invalid neighbour object", response=ErrorMessage.class),
+							@ApiResponse(code = 500, message = "Internal server error", response = ErrorMessage.class),
+							@ApiResponse(code = 201, message = "Neighbour successfully created", response=Neighbour.class)})
+	public Response addNeighbour(
+			@ApiParam(value = "Graph id", required = true) @PathParam("graphId") long graphId,
+			@ApiParam(value = "Node id", required = true) @PathParam("nodeId") long nodeId,
+			@ApiParam(value = "New neighbour object. Neighbour name must refer to the name of an existing node of the same graph", required = true) Neighbour neighbour,
+			@Context UriInfo uriInfo){
+		Neighbour newNeighbour = neighboursService.addNeighbour(graphId, nodeId, neighbour);
+		String newId = String.valueOf(newNeighbour.getId());
+        URI uri = uriInfo.getAbsolutePathBuilder().path(newId).build();
+        return Response.created(uri)
+        			.entity(newNeighbour)
+        			.build();
+	}
+
+	@PUT
+	@Path("{neighbourId}")
+	@ApiOperation(
+    	    httpMethod = "PUT",
+    	    value = "Edits a neighbour of a given node belonging to a given graph",
+    	    notes = "Edits a single neighbour of a given node belonging to a given graph",
+    	    response = Neighbour.class)
+	@ApiResponses(value = { @ApiResponse(code = 403, message = "Invalid graph and/or node and/or neighbour id", response=ErrorMessage.class),
+							@ApiResponse(code = 404, message = "Graph and/or node and /or neighbour not found", response=ErrorMessage.class),
+							@ApiResponse(code = 400, message = "Invalid neighbour object", response=ErrorMessage.class),
+							@ApiResponse(code = 500, message = "Internal server error", response = ErrorMessage.class),
+							@ApiResponse(code = 200, message = "Neighbour edited successfully", response=Neighbour.class)})
+	public Neighbour updateNeighbour(
+			@ApiParam(value = "Graph id", required = true) @PathParam("graphId") long graphId,
+			@ApiParam(value = "Node id", required = true) @PathParam("nodeId") long nodeId,
+			@ApiParam(value = "Neighbour id", required = true) @PathParam("neighbourId") long neighbourId,
+			@ApiParam(value = "Updated neighbour object. Neighbour name must refer to the name of an existing node of the same graph", required = true) Neighbour neighbour){
+		neighbour.setId(neighbourId);
+		return neighboursService.updateNeighbour(graphId, nodeId, neighbour);
+	}
+
+	@DELETE
+	@Path("{neighbourId}")
+	@ApiOperation(
+    	    httpMethod = "DELETE",
+    	    value = "Removes a neighbour from a given node belonging to a given graph",
+    	    notes = "Deletes a single neighbour of a given node belonging to a given graph",
+    	    response = Neighbour.class)
+	@ApiResponses(value = { @ApiResponse(code = 403, message = "Invalid graph and/or node and/or neighbour id", response=ErrorMessage.class),
+							@ApiResponse(code = 404, message = "Graph and/or node not found", response=ErrorMessage.class),
+							@ApiResponse(code = 500, message = "Internal server error", response = ErrorMessage.class),
+							@ApiResponse(code = 204, message = "Node successfully deleted")})
+	public void deleteNeighbour(
+			@ApiParam(value = "Graph id", required = true) @PathParam("graphId") long graphId,
+			@ApiParam(value = "Node id", required = true) @PathParam("nodeId") long nodeId,
+			@ApiParam(value = "Neighbour id", required = true) @PathParam("neighbourId") long neighbourId){
+		neighboursService.removeNeighbour(graphId, nodeId, neighbourId);
+	}
+
+	@GET
+	@Path("{neighbourId}")
+	@ApiOperation(
+    	    httpMethod = "GET",
+    	    value = "Returns a neighbour of a given node belonging to a given graph",
+    	    notes = "Returns a single neighbour of a given node belonging to a given graph",
+    	    response = Neighbour.class)
+	@ApiResponses(value = { @ApiResponse(code = 403, message = "Invalid graph and/or node and/or neighbour id", response=ErrorMessage.class),
+							@ApiResponse(code = 404, message = "Graph and/or node and /or neighbour not found", response=ErrorMessage.class),
+							@ApiResponse(code = 500, message = "Internal server error", response = ErrorMessage.class),
+							@ApiResponse(code = 200, message = "The requested neighbour has been returned in the message body", response=Neighbour.class)})
+	public Neighbour getNeighbour(
+			@ApiParam(value = "Graph id", required = true) @PathParam("graphId") long graphId,
+			@ApiParam(value = "Node id", required = true) @PathParam("nodeId") long nodeId,
+			@ApiParam(value = "Neighbour id", required = true) @PathParam("neighbourId") long neighbourId){
+		return neighboursService.getNeighbour(graphId, nodeId, neighbourId);
+	}
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/resources/NodeResource.java b/verigraph/src/main/java/it/polito/escape/verify/resources/NodeResource.java
new file mode 100644
index 0000000..58d4064
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/resources/NodeResource.java
@@ -0,0 +1,230 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.resources;
+
+import java.net.URI;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.PUT;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.Context;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.UriInfo;
+
+import io.swagger.annotations.Api;
+import io.swagger.annotations.ApiOperation;
+import io.swagger.annotations.ApiParam;
+import io.swagger.annotations.ApiResponse;
+import io.swagger.annotations.ApiResponses;
+import it.polito.escape.verify.exception.BadRequestException;
+import it.polito.escape.verify.exception.ForbiddenException;
+import it.polito.escape.verify.model.Configuration;
+import it.polito.escape.verify.model.ErrorMessage;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Neighbour;
+import it.polito.escape.verify.model.Node;
+import it.polito.escape.verify.service.GraphService;
+import it.polito.escape.verify.service.NodeService;
+
+@Api( hidden= true, value = "", description = "Manage nodes" )
+@Consumes(MediaType.APPLICATION_JSON)
+@Produces(MediaType.APPLICATION_JSON)
+public class NodeResource {
+
+	NodeService nodeService = new NodeService();
+
+
+    @GET
+    @ApiOperation(
+    	    httpMethod = "GET",
+    	    value = "Returns all nodes of a given graph",
+    	    notes = "Returns an array of nodes belonging to a given graph",
+    	    response = Node.class,
+    	    responseContainer = "List")
+    @ApiResponses(value = { @ApiResponse(code = 403, message = "Invalid graph id", response = ErrorMessage.class),
+    						@ApiResponse(code = 404, message = "Graph not found", response = ErrorMessage.class),
+    						@ApiResponse(code = 500, message = "Internal server error", response = ErrorMessage.class),
+    						@ApiResponse(code = 200, message = "All the nodes have been returned in the message body", response = Node.class, responseContainer = "List") })
+    public List<Node> getNodes(@ApiParam(value = "Graph id", required = true) @PathParam("graphId") long graphId){
+    	return nodeService.getAllNodes(graphId);
+    }
+
+    @POST
+    @ApiOperation(
+    	    httpMethod = "POST",
+    	    value = "Creates a node in a given graph",
+    	    notes = "Creates a single node for a given graph",
+    	    response = Response.class)
+    @ApiResponses(value = { @ApiResponse(code = 400, message = "Invalid node supplied", response = ErrorMessage.class),
+    						@ApiResponse(code = 403, message = "Invalid graph id", response = ErrorMessage.class),
+    						@ApiResponse(code = 404, message = "Graph not found", response = ErrorMessage.class),
+    						@ApiResponse(code = 500, message = "Internal server error", response = ErrorMessage.class),
+    						@ApiResponse(code = 201, message = "Node successfully created", response = Node.class)})
+    public Response addNode(
+    		@ApiParam(value = "Graph id", required = true) @PathParam("graphId") long graphId,
+    		@ApiParam(value = "New node object", required = true) Node node,
+    		@Context UriInfo uriInfo) {
+        Node newNode = nodeService.addNode(graphId, node);
+        String newId = String.valueOf(newNode.getId());
+        URI uri = uriInfo.getAbsolutePathBuilder().path(newId).build();
+        return Response.created(uri)
+        			.entity(newNode)
+        			.build();
+    }
+
+    @GET
+    @Path("{nodeId}")
+    @ApiOperation(
+    	    httpMethod = "GET",
+    	    value = "Returns a node of a given graph",
+    	    notes = "Returns a single node of a given graph",
+    	    response = Node.class)
+    @ApiResponses(value = { @ApiResponse(code = 403, message = "Invalid graph and/or node id", response = ErrorMessage.class),
+    						@ApiResponse(code = 404, message = "Graph and/or node not found", response = ErrorMessage.class),
+    						@ApiResponse(code = 500, message = "Internal server error", response = ErrorMessage.class),
+    						@ApiResponse(code = 200, message = "The requested node has been returned in the message body", response = Node.class)})
+    public Node getNode(
+    		@ApiParam(value = "Graph id", required = true) @PathParam("graphId") long graphId,
+    		@ApiParam(value = "Node id", required = true) @PathParam("nodeId") long nodeId,
+    		@Context UriInfo uriInfo){
+    	Node node = nodeService.getNode(graphId, nodeId);
+    	node.addLink(getUriForSelf(uriInfo, graphId, node), "self");
+    	node.addLink(getUriForNeighbours(uriInfo, graphId, node), "neighbours");
+    	return node;
+    }
+
+    @PUT
+    @Path("{nodeId}/configuration")
+    @ApiOperation(
+    	    httpMethod = "PUT",
+    	    value = "Adds/edits a configuration to a node of a given graph",
+    	    notes = "Configures a node. Once all the nodes of a graph have been configured a given policy can be verified for the graph (e.g. 'reachability' between two nodes).")
+    @ApiResponses(value = { @ApiResponse(code = 403, message = "Invalid graph and/or node id", response = ErrorMessage.class),
+    						@ApiResponse(code = 404, message = "Graph and/or node not found", response = ErrorMessage.class),
+    						@ApiResponse(code = 500, message = "Internal server error", response = ErrorMessage.class),
+    						@ApiResponse(code = 200, message = "Configuration updated for the requested node")})
+    public void addNodeConfiguration(
+    		@ApiParam(value = "Graph id", required = true) @PathParam("graphId") long graphId,
+    		@ApiParam(value = "Node id", required = true) @PathParam("nodeId") long nodeId,
+    		@ApiParam(value = "Node configuration", required = true) Configuration nodeConfiguration,
+    		@Context UriInfo uriInfo){
+    	if (graphId <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + graphId);
+		}
+		if (nodeId <= 0) {
+			throw new ForbiddenException("Illegal node id: " + nodeId);
+		}
+    	Graph graph = new GraphService().getGraph(graphId);
+    	if (graph == null){
+    		throw new BadRequestException("Graph with id " + graphId + " not found");
+    	}
+    	Node node = nodeService.getNode(graphId, nodeId);
+    	if (node == null){
+    		throw new BadRequestException("Node with id " + nodeId + " not found in graph with id " + graphId);
+    	}
+    	Node nodeCopy = new Node();
+    	nodeCopy.setId(node.getId());
+    	nodeCopy.setName(node.getName());
+    	nodeCopy.setFunctional_type(node.getFunctional_type());
+    	Map<Long,Neighbour> nodes = new HashMap<Long,Neighbour>();
+    	nodes.putAll(node.getNeighbours());
+    	nodeCopy.setNeighbours(nodes);
+    	nodeConfiguration.setId(nodeCopy.getName());
+    	nodeCopy.setConfiguration(nodeConfiguration);
+
+    	Graph graphCopy = new Graph();
+		graphCopy.setId(graph.getId());
+		graphCopy.setNodes(new HashMap<Long, Node>(graph.getNodes()));
+		graphCopy.getNodes().remove(node.getId());
+
+		NodeService.validateNode(graphCopy, nodeCopy);
+    	graph.getNodes().put(nodeId, nodeCopy);
+    }
+
+
+	@PUT
+    @Path("{nodeId}")
+    @ApiOperation(
+    	    httpMethod = "PUT",
+    	    value = "Edits a node of a given graph",
+    	    notes = "Edits a single node of a given graph",
+    	    response = Node.class)
+	@ApiResponses(value = { @ApiResponse(code = 400, message = "Invalid node object", response = ErrorMessage.class),
+							@ApiResponse(code = 403, message = "Invalid graph and/or node id", response = ErrorMessage.class),
+							@ApiResponse(code = 404, message = "Graph and/or node not found", response = ErrorMessage.class),
+							@ApiResponse(code = 500, message = "Internal server error", response = ErrorMessage.class),
+							@ApiResponse(code = 200, message = "Node edited successfully", response = Node.class)})
+    public Node updateNode(
+    		@ApiParam(value = "Graph id", required = true) @PathParam("graphId") long graphId,
+    		@ApiParam(value = "Node id", required = true) @PathParam("nodeId") long nodeId,
+    		@ApiParam(value = "Updated node object", required = true) Node node){
+    	node.setId(nodeId);
+    	return nodeService.updateNode(graphId, node);
+    }
+
+    @DELETE
+    @Path("{nodeId}")
+    @ApiOperation(
+    	    httpMethod = "DELETE",
+    	    value = "Deletes a node of a given graph",
+    	    notes = "Deletes a single node of a given graph")
+    @ApiResponses(value = { @ApiResponse(code = 403, message = "Invalid graph and/or node id", response = ErrorMessage.class),
+                            @ApiResponse(code = 500, message = "Internal server error", response = ErrorMessage.class),
+    						@ApiResponse(code = 204, message = "Node successfully deleted")})
+    public void deleteNode(
+    		@ApiParam(value = "Graph id", required = true) @PathParam("graphId") long graphId,
+    		@ApiParam(value = "Node id", required = true) @PathParam("nodeId") long nodeId){
+    	nodeService.removeNode(graphId, nodeId);
+    }
+
+    private String getUriForSelf(UriInfo uriInfo, long graphId, Node node) {
+		String uri = uriInfo.getBaseUriBuilder()
+		 //.path(NodeResource.class)
+		 .path(GraphResource.class)
+		 .path(GraphResource.class, "getNodeResource")
+		 .resolveTemplate("graphId", graphId)
+		 .path(Long.toString(node.getId()))
+		 .build()
+		 .toString();
+		return uri;
+	}
+
+    private String getUriForNeighbours(UriInfo uriInfo, long graphId, Node node) {
+		String uri = uriInfo.getBaseUriBuilder()
+				.path(GraphResource.class)
+				.path(GraphResource.class, "getNodeResource")
+				.resolveTemplate("graphId", graphId)
+				.path(Long.toString(node.getId()))
+				.path("neighbours")
+				.build()
+				.toString();
+//    	 .path(NodeResource.class)
+//		 .path(NodeResource.class, "getNeighbourResource")
+//		 .path(NeighbourResource.class)
+//		 .resolveTemplate("nodeId", node.getId())
+//		 .build()
+//		 .toString();
+    	return uri;
+	}
+
+	@Path("{nodeId}/neighbours")
+	public NeighbourResource getNeighbourResource(){
+		return new NeighbourResource();
+	}
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/resources/beans/VerificationBean.java b/verigraph/src/main/java/it/polito/escape/verify/resources/beans/VerificationBean.java
new file mode 100644
index 0000000..d6f9ca6
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/resources/beans/VerificationBean.java
@@ -0,0 +1,67 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.resources.beans;
+
+import javax.ws.rs.QueryParam;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+
+@ApiModel("Verification")
+public class VerificationBean {
+
+	@ApiModelProperty(example = "webclient", value = "Source node. Must refer to an existing node of the same graph")
+	private @QueryParam("source") String		source;
+
+	@ApiModelProperty(	example = "webserver",
+						value = "Destination node. Must refer to an existing node of the same graph")
+	private @QueryParam("destination") String	destination;
+
+	@ApiModelProperty(	example = "reachability",
+						value = "Verification policy ('reachability', 'isolation', 'traversal')")
+	private @QueryParam("type") String			type;
+
+	@ApiModelProperty(	example = "firewall",
+						value = "Absent if verification type is 'reachability', equal to the name of a middlebox to be avoided if verification type is 'isolation', equal to the name of a middlebox to be traversed if verification type is 'traversal'")
+	private @QueryParam("middlebox") String		middlebox;
+
+	public String getSource() {
+		return source;
+	}
+
+	public void setSource(String source) {
+		this.source = source;
+	}
+
+	public String getDestination() {
+		return destination;
+	}
+
+	public void setDestination(String destination) {
+		this.destination = destination;
+	}
+
+	public String getType() {
+		return type;
+	}
+
+	public void setType(String type) {
+		this.type = type;
+	}
+
+	public String getMiddlebox() {
+		return middlebox;
+	}
+
+	public void setMiddlebox(String middlebox) {
+		this.middlebox = middlebox;
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/serializer/CustomConfigurationSerializer.java b/verigraph/src/main/java/it/polito/escape/verify/serializer/CustomConfigurationSerializer.java
new file mode 100644
index 0000000..e28273f
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/serializer/CustomConfigurationSerializer.java
@@ -0,0 +1,35 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.serializer;
+
+import java.io.IOException;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonSerializer;
+import com.fasterxml.jackson.databind.SerializerProvider;
+
+import it.polito.escape.verify.exception.InternalServerErrorException;
+import it.polito.escape.verify.model.Configuration;
+
+public class CustomConfigurationSerializer extends JsonSerializer<Configuration> {
+
+	@Override
+	public void serialize(Configuration conf, JsonGenerator jgen, SerializerProvider provider)
+			throws IOException, JsonProcessingException {
+		try {
+			jgen.writeObject(conf.getConfiguration());
+		} catch (IOException e) {
+			throw new InternalServerErrorException("I/O error serializing a configuration object: " + e.getMessage());
+		}
+
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/serializer/CustomMapSerializer.java b/verigraph/src/main/java/it/polito/escape/verify/serializer/CustomMapSerializer.java
new file mode 100644
index 0000000..e811365
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/serializer/CustomMapSerializer.java
@@ -0,0 +1,30 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.serializer;
+
+import java.io.IOException;
+import java.util.Map;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.databind.JsonSerializer;
+import com.fasterxml.jackson.databind.SerializerProvider;
+
+import it.polito.escape.verify.exception.InternalServerErrorException;
+
+public class CustomMapSerializer extends JsonSerializer<Map<?, ?>> {
+	@Override
+	public void serialize(final Map<?, ?> value, final JsonGenerator jgen, final SerializerProvider provider) {
+		try {
+			jgen.writeObject(value.values());
+		} catch (IOException e) {
+			throw new InternalServerErrorException("I/O error serializing a map: " + e.getMessage());
+		}
+	}
+}
\ No newline at end of file
diff --git a/verigraph/src/main/java/it/polito/escape/verify/service/GraphService.java b/verigraph/src/main/java/it/polito/escape/verify/service/GraphService.java
new file mode 100644
index 0000000..b34eb08
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/service/GraphService.java
@@ -0,0 +1,129 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.service;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import it.polito.escape.verify.database.DatabaseClass;
+import it.polito.escape.verify.exception.DataNotFoundException;
+import it.polito.escape.verify.exception.ForbiddenException;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Neighbour;
+import it.polito.escape.verify.model.Node;
+
+public class GraphService {
+
+	private Map<Long, Graph> graphs = DatabaseClass.getInstance().getGraphs();
+
+	public GraphService() {
+
+	}
+
+	public List<Graph> getAllGraphs() {
+		return new ArrayList<Graph>(graphs.values());
+	}
+
+	public Graph getGraph(long id) {
+		if (id <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + id);
+		}
+		Graph graph = graphs.get(id);
+		if (graph == null) {
+			throw new DataNotFoundException("Graph with id " + id + " not found");
+		}
+		return graph;
+	}
+
+	public Graph updateGraph(Graph graph) {
+		if (graph.getId() <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + graph.getId());
+		}
+		Graph localGraph = graphs.get(graph.getId());
+		if (localGraph == null) {
+			throw new DataNotFoundException("Graph with id " + graph.getId() + " not found");
+		}
+
+		validateGraph(graph);
+
+//		int numberOfNodes = 0;
+//		for (Node node : graph.getNodes().values()) {
+//
+//			node.setId(++numberOfNodes);
+//
+//			int numberOfNodeNeighbours = 0;
+//			for (Neighbour neighbour : node.getNeighbours().values()) {
+//				neighbour.setId(++numberOfNodeNeighbours);
+//			}
+//		}
+
+		for (Map.Entry<Long, Node> nodeEntry : graph.getNodes().entrySet()){
+			nodeEntry.getValue().setId(nodeEntry.getKey());
+
+			for (Map.Entry<Long, Neighbour> neighbourEntry : nodeEntry.getValue().getNeighbours().entrySet()){
+				neighbourEntry.getValue().setId(neighbourEntry.getKey());
+			}
+		}
+
+		synchronized(this){
+			graphs.put(graph.getId(), graph);
+			DatabaseClass.persistDatabase();
+			return graph;
+		}
+	}
+
+	public Graph removeGraph(long id) {
+		if (id <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + id);
+		}
+		synchronized(this){
+			return graphs.remove(id);
+		}
+	}
+
+	public Graph addGraph(Graph graph) {
+		validateGraph(graph);
+
+		synchronized (this) {
+			graph.setId(DatabaseClass.getInstance().getNumberOfGraphs() + 1);
+		}
+//		int numberOfNodes = 0;
+//		for (Node node : graph.getNodes().values()) {
+//
+//			node.setId(++numberOfNodes);
+//
+//			int numberOfNodeNeighbours = 0;
+//			for (Neighbour neighbour : node.getNeighbours().values()) {
+//				neighbour.setId(++numberOfNodeNeighbours);
+//			}
+//		}
+
+		for (Map.Entry<Long, Node> nodeEntry : graph.getNodes().entrySet()){
+			nodeEntry.getValue().setId(nodeEntry.getKey());
+
+			for (Map.Entry<Long, Neighbour> neighbourEntry : nodeEntry.getValue().getNeighbours().entrySet()){
+				neighbourEntry.getValue().setId(neighbourEntry.getKey());
+			}
+		}
+
+		synchronized(this){
+			graphs.put(graph.getId(), graph);
+			DatabaseClass.persistDatabase();
+			return graph;
+		}
+	}
+
+	public static void validateGraph(Graph graph) {
+		for (Node node : graph.getNodes().values()) {
+			NodeService.validateNode(graph, node);
+		}
+	}
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/service/JsonValidationService.java b/verigraph/src/main/java/it/polito/escape/verify/service/JsonValidationService.java
new file mode 100644
index 0000000..1ac6c1f
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/service/JsonValidationService.java
@@ -0,0 +1,136 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.service;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Iterator;
+import java.util.Map.Entry;
+
+import org.apache.commons.lang3.text.WordUtils;
+
+import com.fasterxml.jackson.databind.JsonNode;
+
+import it.polito.escape.verify.exception.BadRequestException;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Node;
+
+public class JsonValidationService {
+
+	private Graph	graph	= new Graph();
+
+	private Node	node	= new Node();
+
+	public JsonValidationService() {
+
+	}
+
+	public JsonValidationService(Graph graph, Node node) {
+		this.graph = graph;
+		this.node = node;
+	}
+
+	public boolean validateFieldAgainstNodeNames(String value) {
+		for (Node node : this.graph.getNodes().values()) {
+			if (node.getName().equals(value))
+				return true;
+		}
+		return false;
+	}
+
+	public void validateFieldsAgainstNodeNames(JsonNode node) {
+		if (node.isTextual()) {
+			boolean isValid = validateFieldAgainstNodeNames(node.asText());
+			if (!isValid) {
+				System.out.println(node.asText() + " is not a valid string!");
+				throw new BadRequestException("String '"	+ node.asText()
+												+ "' is not valid for the configuration of node '" + this.node.getName()
+												+ "'");
+			}
+		}
+		if (node.isArray()) {
+			for (JsonNode object : node) {
+				validateFieldsAgainstNodeNames(object);
+			}
+		}
+		if (node.isObject()) {
+			Iterator<Entry<String, JsonNode>> iter = node.fields();
+
+			while (iter.hasNext()) {
+				Entry<String, JsonNode> item = iter.next();
+				validateFieldsAgainstNodeNames(item.getValue());
+			}
+		}
+
+	}
+
+	public boolean validateNodeConfiguration() {
+		String className = WordUtils.capitalize(node.getFunctional_type()) + "Validator";
+
+		Class<?> validator;
+		try {
+			validator = Class.forName("it.polito.escape.verify.validation." + className);
+		}
+		catch (ClassNotFoundException e) {
+			System.out.println(className	+ " not found, configuration properties of node '" + node.getName()
+								+ "' will be validated against node names");
+			return false;
+		}
+
+		Class<?> graphClass;
+		Class<?> nodeClass;
+		Class<?> configurationClass;
+		try {
+			graphClass = Class.forName("it.polito.escape.verify.model.Graph");
+			nodeClass = Class.forName("it.polito.escape.verify.model.Node");
+			configurationClass = Class.forName("it.polito.escape.verify.model.Configuration");
+		}
+		catch (ClassNotFoundException e) {
+			throw new RuntimeException("Model classes not found");
+		}
+
+		Class<?>[] paramTypes = new Class[3];
+		paramTypes[0] = graphClass;
+		paramTypes[1] = nodeClass;
+		paramTypes[2] = configurationClass;
+
+		String methodName = "validate";
+
+		Object instance;
+		try {
+			instance = validator.newInstance();
+		}
+		catch (InstantiationException e) {
+			throw new RuntimeException("'" + className + "' cannot be instantiated");
+		}
+		catch (IllegalAccessException e) {
+			throw new RuntimeException("Illegal access to '" + className + "' instantiation");
+		}
+
+		Method myMethod;
+		try {
+			myMethod = validator.getDeclaredMethod(methodName, paramTypes);
+		}
+		catch (NoSuchMethodException e) {
+			throw new RuntimeException("'" + methodName + "' method has to be implemented in " + className + " class");
+		}
+		try {
+			myMethod.invoke(instance, graph, node, node.getConfiguration());
+		}
+		catch (IllegalAccessException e) {
+			throw new RuntimeException("Illegal access to '" + methodName + "' method in " + className + " instance");
+		}
+		catch (InvocationTargetException e) {
+			throw new BadRequestException("Validation failed for node '"	+ node.getName() + "': "
+											+ e.getTargetException().getMessage());
+		}
+		return true;
+	}
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/service/NeighbourService.java b/verigraph/src/main/java/it/polito/escape/verify/service/NeighbourService.java
new file mode 100644
index 0000000..ecf4e69
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/service/NeighbourService.java
@@ -0,0 +1,182 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.service;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import it.polito.escape.verify.database.DatabaseClass;
+import it.polito.escape.verify.exception.BadRequestException;
+import it.polito.escape.verify.exception.DataNotFoundException;
+import it.polito.escape.verify.exception.ForbiddenException;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Neighbour;
+import it.polito.escape.verify.model.Node;
+
+public class NeighbourService {
+
+	private Map<Long, Graph> graphs = DatabaseClass.getInstance().getGraphs();
+
+	public List<Neighbour> getAllNeighbours(long graphId, long nodeId) {
+		if (graphId <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + graphId);
+		}
+		if (nodeId <= 0) {
+			throw new ForbiddenException("Illegal node id: " + nodeId);
+		}
+		Graph graph = graphs.get(graphId);
+		if (graph == null)
+			throw new DataNotFoundException("Graph with id " + graphId + " not found");
+		Map<Long, Node> nodes = graph.getNodes();
+		Node node = nodes.get(nodeId);
+		if (node == null)
+			throw new DataNotFoundException("Node with id " + nodeId + " not found in graph with id " + graphId);
+		Map<Long, Neighbour> neighbours = node.getNeighbours();
+		return new ArrayList<Neighbour>(neighbours.values());
+	}
+
+	public Neighbour getNeighbour(long graphId, long nodeId, long neighbourId) {
+		if (graphId <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + graphId);
+		}
+		if (nodeId <= 0) {
+			throw new ForbiddenException("Illegal node id: " + nodeId);
+		}
+		if (neighbourId <= 0) {
+			throw new ForbiddenException("Illegal neighbour id: " + neighbourId);
+		}
+		Graph graph = graphs.get(graphId);
+		if (graph == null)
+			throw new DataNotFoundException("Graph with id " + graphId + " not found");
+		Map<Long, Node> nodes = graph.getNodes();
+		Node node = nodes.get(nodeId);
+		if (node == null) {
+			throw new DataNotFoundException("Node with id " + nodeId + " not found in graph with id " + graphId);
+		}
+		Map<Long, Neighbour> neighbours = node.getNeighbours();
+		Neighbour neighbour = neighbours.get(neighbourId);
+		if (neighbour == null) {
+			throw new DataNotFoundException("Neighbour with id "	+ neighbourId + " not found for node with id " + nodeId
+											+ " in graph with id " + graphId);
+		}
+		return neighbour;
+	}
+
+	public Neighbour addNeighbour(long graphId, long nodeId, Neighbour neighbour) {
+		if (graphId <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + graphId);
+		}
+		if (nodeId <= 0) {
+			throw new ForbiddenException("Illegal node id: " + nodeId);
+		}
+		Graph graph = graphs.get(graphId);
+		if (graph == null)
+			throw new DataNotFoundException("Graph with id " + graphId + " not found");
+		Map<Long, Node> nodes = graph.getNodes();
+		Node node = nodes.get(nodeId);
+		if (node == null) {
+			throw new DataNotFoundException("Node with id " + nodeId + " not found in graph with id " + graphId);
+		}
+		Map<Long, Neighbour> neighbours = node.getNeighbours();
+
+		validateNeighbour(graph, node, neighbour);
+
+		synchronized (this) {
+			neighbour.setId(neighbours.size() + 1);
+			neighbours.put(neighbour.getId(), neighbour);
+			DatabaseClass.persistDatabase();
+			return neighbour;
+		}
+	}
+
+	public Neighbour updateNeighbour(long graphId, long nodeId, Neighbour neighbour) {
+		if (graphId <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + graphId);
+		}
+		if (nodeId <= 0) {
+			throw new ForbiddenException("Illegal node id: " + nodeId);
+		}
+		if (neighbour.getId() <= 0) {
+			throw new ForbiddenException("Illegal neighbour id: " + nodeId);
+		}
+		Graph graph = graphs.get(graphId);
+		if (graph == null)
+			throw new DataNotFoundException("Graph with id " + graphId + " not found");
+		Map<Long, Node> nodes = graph.getNodes();
+		Node node = nodes.get(nodeId);
+		if (node == null) {
+			throw new DataNotFoundException("Node with id " + nodeId + " not found in graph with id " + graphId);
+		}
+		Map<Long, Neighbour> neighbours = node.getNeighbours();
+		Neighbour currentNeighbour = neighbours.get(neighbour.getId());
+		if (currentNeighbour == null) {
+			throw new DataNotFoundException("Neighbour with id "	+ neighbour.getId() + " not found for node with id "
+											+ nodeId + " in graph with id " + graphId);
+		}
+
+		validateNeighbour(graph, node, neighbour);
+
+		synchronized (this) {
+			neighbours.put(neighbour.getId(), neighbour);
+			DatabaseClass.persistDatabase();
+			return neighbour;
+		}
+	}
+
+	public Neighbour removeNeighbour(long graphId, long nodeId, long neighbourId) {
+		if (graphId <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + graphId);
+		}
+		if (nodeId <= 0) {
+			throw new ForbiddenException("Illegal node id: " + nodeId);
+		}
+		if (neighbourId <= 0) {
+			throw new ForbiddenException("Illegal neighbour id: " + nodeId);
+		}
+		Graph graph = graphs.get(graphId);
+		if (graph == null)
+			throw new DataNotFoundException("Graph with id " + graphId + " not found");
+		Map<Long, Node> nodes = graph.getNodes();
+		Node node = nodes.get(nodeId);
+		if (node == null) {
+			throw new DataNotFoundException("Node with id " + nodeId + " not found in graph with id " + graphId);
+		}
+		Map<Long, Neighbour> neighbours = node.getNeighbours();
+
+		synchronized(this){
+			return neighbours.remove(neighbourId);
+		}
+	}
+
+	public static void validateNeighbour(Graph graph, Node node, Neighbour neighbour) {
+		if (graph == null)
+			throw new BadRequestException("Neighbour validation failed: cannot validate null graph");
+		if (node == null)
+			throw new BadRequestException("Neighbour validation failed: cannot validate null node");
+		if (neighbour == null)
+			throw new BadRequestException("Neighbour validation failed: cannot validate null neighbour");
+
+		if (neighbour.getName() == null)
+			throw new BadRequestException("Neighbour validation failed: neighbour 'name' field cannot be null");
+		if (neighbour.getName().equals(""))
+			throw new BadRequestException("Neighbour validation failed: neighbour 'name' field cannot be an empty string");
+
+		Node nodeFound = graph.searchNodeByName(neighbour.getName());
+		if ((nodeFound == null) || (nodeFound.getName().equals(node.getName())))
+			throw new BadRequestException("Neighbour validation failed: '"	+ neighbour.getName()
+											+ "' is not a valid name for a neighbour of node '" + node.getName() + "'");
+
+		Neighbour neighbourFound = node.searchNeighbourByName(neighbour.getName());
+		if ((neighbourFound != null) && (neighbourFound.equals(neighbour) == false))
+			throw new BadRequestException("Neighbour validation failed: node '"	+ node.getName()
+											+ "' already has a neighbour named '" + neighbour.getName() + "'");
+	}
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/service/NodeService.java b/verigraph/src/main/java/it/polito/escape/verify/service/NodeService.java
new file mode 100644
index 0000000..e6ad672
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/service/NodeService.java
@@ -0,0 +1,258 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.service;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Scanner;
+
+import javax.ws.rs.InternalServerErrorException;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.github.fge.jsonschema.core.exceptions.ProcessingException;
+import com.github.fge.jsonschema.main.JsonSchema;
+
+import it.polito.escape.verify.database.DatabaseClass;
+import it.polito.escape.verify.exception.BadRequestException;
+import it.polito.escape.verify.exception.DataNotFoundException;
+import it.polito.escape.verify.exception.ForbiddenException;
+import it.polito.escape.verify.model.Configuration;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Neighbour;
+import it.polito.escape.verify.model.Node;
+
+public class NodeService {
+
+	private Map<Long, Graph> graphs = DatabaseClass.getInstance().getGraphs();
+
+	public NodeService() {
+
+	}
+
+	public List<Node> getAllNodes(long graphId) {
+		if (graphId <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + graphId);
+		}
+		Graph graph = graphs.get(graphId);
+		if (graph == null)
+			throw new DataNotFoundException("Graph with id " + graphId + " not found");
+		Map<Long, Node> nodes = graph.getNodes();
+		return new ArrayList<Node>(nodes.values());
+	}
+
+	public Node getNode(long graphId, long nodeId) {
+		if (graphId <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + graphId);
+		}
+		if (nodeId <= 0) {
+			throw new ForbiddenException("Illegal node id: " + nodeId);
+		}
+		Graph graph = graphs.get(graphId);
+		if (graph == null)
+			throw new DataNotFoundException("Graph with id " + graphId + " not found");
+		Map<Long, Node> nodes = graph.getNodes();
+		Node node = nodes.get(nodeId);
+		if (node == null) {
+			throw new DataNotFoundException("Node with id " + nodeId + " not found in graph with id " + graphId);
+		}
+		return node;
+	}
+
+	public Node updateNode(long graphId, Node node) {
+		if (graphId <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + graphId);
+		}
+		if (node.getId() <= 0) {
+			throw new ForbiddenException("Illegal node id: " + node.getId());
+		}
+		Graph graph = graphs.get(graphId);
+		if (graph == null)
+			throw new DataNotFoundException("Graph with id " + graphId + " not found");
+		Map<Long, Node> nodes = graph.getNodes();
+		Node localNode = nodes.get(node.getId());
+		if (localNode == null) {
+			throw new DataNotFoundException("Node with id " + node.getId() + " not found in graph with id " + graphId);
+		}
+
+		Graph graphCopy = new Graph();
+		graphCopy.setId(graph.getId());
+		graphCopy.setNodes(new HashMap<Long, Node>(graph.getNodes()));
+		graphCopy.getNodes().remove(node.getId());
+
+		// int numberOfNeighbours = 0;
+		// for(Neighbour neighbour : node.getNeighbours().values()){
+		// neighbour.setId(++numberOfNeighbours);
+		// }
+
+		for (Map.Entry<Long, Neighbour> neighbourEntry : node.getNeighbours().entrySet()) {
+			neighbourEntry.getValue().setId(neighbourEntry.getKey());
+		}
+
+		validateNode(graphCopy, node);
+
+		synchronized (this) {
+			nodes.put(node.getId(), node);
+			DatabaseClass.persistDatabase();
+			return node;
+		}
+	}
+
+	public Node removeNode(long graphId, long nodeId) {
+		if (graphId <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + graphId);
+		}
+		if (nodeId <= 0) {
+			throw new ForbiddenException("Illegal node id: " + nodeId);
+		}
+		Graph graph = graphs.get(graphId);
+		if (graph == null)
+			throw new DataNotFoundException("Graph with id " + graphId + " not found");
+		Map<Long, Node> nodes = graph.getNodes();
+
+		synchronized (this) {
+			return nodes.remove(nodeId);
+		}
+	}
+
+	public Node addNode(long graphId, Node node) {
+		if (graphId <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + graphId);
+		}
+		Graph graph = graphs.get(graphId);
+		if (graph == null)
+			throw new DataNotFoundException("Graph with id " + graphId + " not found");
+		Map<Long, Node> nodes = graph.getNodes();
+
+		validateNode(graph, node);
+
+		synchronized (this) {
+			node.setId(DatabaseClass.getInstance().getGraphNumberOfNodes(graphId) + 1);
+		}
+
+		// int numberOfNeighbours = 0;
+
+		for (Map.Entry<Long, Neighbour> neighbourEntry : node.getNeighbours().entrySet()) {
+			neighbourEntry.getValue().setId(neighbourEntry.getKey());
+		}
+
+		// for (Neighbour neighbour : node.getNeighbours().values()) {
+		// neighbour.setId(++numberOfNeighbours);
+		// }
+
+		synchronized (this) {
+			nodes.put(node.getId(), node);
+			DatabaseClass.persistDatabase();
+			return node;
+		}
+	}
+
+	public Node searchByName(long graphId, String nodeName) {
+		if (graphId <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + graphId);
+		}
+		Graph graph = graphs.get(graphId);
+		if (graph == null)
+			throw new DataNotFoundException("Graph with id " + graphId + " not found");
+		Map<Long, Node> nodes = graph.getNodes();
+
+		for (Node node : nodes.values()) {
+			if (node.getName().equals(nodeName))
+				return node;
+		}
+		return null;
+	}
+
+	public static void validateNode(Graph graph, Node node) {
+		if (graph == null)
+			throw new BadRequestException("Node validation failed: cannot validate null graph");
+		if (node == null)
+			throw new BadRequestException("Node validation failed: cannot validate null node");
+
+		if (node.getName() == null)
+			throw new BadRequestException("Node validation failed: node 'name' field cannot be null");
+		if (node.getFunctional_type() == null)
+			throw new BadRequestException("Node validation failed: node 'functional_type' field cannot be null");
+
+		if (node.getName().equals(""))
+			throw new BadRequestException("Node validation failed: node 'name' field cannot be an empty string");
+		if (node.getFunctional_type().equals(""))
+			throw new BadRequestException("Node validation failed: node 'functional_type' field cannot be an empty string");
+
+		Node nodeFound = graph.searchNodeByName(node.getName());
+		if ((nodeFound != null) && (nodeFound.equals(node) == false))
+			throw new BadRequestException("Node validation failed: graph already has a node named '"	+ node.getName()
+											+ "'");
+		Configuration configuration = node.getConfiguration();
+		if (configuration != null) {
+			JsonNode configurationJsonNode = configuration.getConfiguration();
+			// validate configuration against schema file
+			validateNodeConfigurationAgainstSchemaFile(node, configurationJsonNode);
+			JsonValidationService jsonValidator = new JsonValidationService(graph, node);
+			boolean hasCustomValidator = jsonValidator.validateNodeConfiguration();
+			if (!hasCustomValidator) {
+				jsonValidator.validateFieldsAgainstNodeNames(configurationJsonNode);
+			}
+		}
+
+		// validate neighbours
+		Map<Long, Neighbour> nodeNeighboursMap = node.getNeighbours();
+		if (nodeNeighboursMap == null)
+			throw new BadRequestException("Node validation failed: node 'neighbours' cannot be null");
+		for (Neighbour neighbour : nodeNeighboursMap.values()) {
+			NeighbourService.validateNeighbour(graph, node, neighbour);
+		}
+	}
+
+	public static void validateNodeConfigurationAgainstSchemaFile(Node node, JsonNode configurationJson) {
+		String schemaFileName = node.getFunctional_type() + ".json";
+
+		File schemaFile = new File(System.getProperty("catalina.base") + "/webapps/verify/json/" + schemaFileName);
+
+		if (!schemaFile.exists()) {
+			//if no REST client, try gRPC application
+			schemaFile = new File("src/main/webapp/json/" + schemaFileName);
+
+			if (!schemaFile.exists()) {
+				throw new ForbiddenException("Functional type '"	+ node.getFunctional_type()
+											+ "' is not supported! Please edit 'functional_type' field of node '"
+											+ node.getName() + "'");
+			}
+		}
+
+		JsonSchema schemaNode = null;
+		try {
+			schemaNode = ValidationUtils.getSchemaNode(schemaFile);
+		}
+		catch (IOException e) {
+			throw new InternalServerErrorException("Unable to load '" + schemaFileName + "' schema file");
+		}
+		catch (ProcessingException e) {
+			throw new InternalServerErrorException("Unable to resolve '"	+ schemaFileName
+													+ "' schema file as a schema node");
+		}
+
+		try {
+			ValidationUtils.validateJson(schemaNode, configurationJson);
+		}
+		catch (ProcessingException e) {
+			throw new BadRequestException("Something went wrong trying to validate node '"	+ node.getName()
+											+ "' with the following configuration: '" + configurationJson.toString()
+											+ "' against the json schema '" + schemaFile.getName() + "': "
+											+ e.getMessage());
+
+		}
+
+	}
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/service/ValidationUtils.java b/verigraph/src/main/java/it/polito/escape/verify/service/ValidationUtils.java
new file mode 100644
index 0000000..77ef4f7
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/service/ValidationUtils.java
@@ -0,0 +1,132 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.service;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.URL;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.github.fge.jackson.JsonLoader;
+import com.github.fge.jsonschema.core.exceptions.ProcessingException;
+import com.github.fge.jsonschema.core.report.ProcessingMessage;
+import com.github.fge.jsonschema.core.report.ProcessingReport;
+import com.github.fge.jsonschema.main.JsonSchema;
+import com.github.fge.jsonschema.main.JsonSchemaFactory;
+
+public class ValidationUtils {
+
+	public static final String	JSON_V4_SCHEMA_IDENTIFIER		= "http://json-schema.org/draft-04/schema#";
+	public static final String	JSON_SCHEMA_IDENTIFIER_ELEMENT	= "$schema";
+
+	public static JsonNode getJsonNode(String jsonText) throws IOException {
+		return JsonLoader.fromString(jsonText);
+	} // getJsonNode(text) ends
+
+	public static JsonNode getJsonNode(File jsonFile) throws IOException {
+		return JsonLoader.fromFile(jsonFile);
+	} // getJsonNode(File) ends
+
+	public static JsonNode getJsonNode(URL url) throws IOException {
+		return JsonLoader.fromURL(url);
+	} // getJsonNode(URL) ends
+
+	public static JsonNode getJsonNodeFromResource(String resource) throws IOException {
+		return JsonLoader.fromResource(resource);
+	} // getJsonNode(Resource) ends
+
+	public static JsonSchema getSchemaNode(String schemaText) throws IOException, ProcessingException {
+		final JsonNode schemaNode = getJsonNode(schemaText);
+		return _getSchemaNode(schemaNode);
+	} // getSchemaNode(text) ends
+
+	public static JsonSchema getSchemaNode(File schemaFile) throws IOException, ProcessingException {
+		final JsonNode schemaNode = getJsonNode(schemaFile);
+		return _getSchemaNode(schemaNode);
+	} // getSchemaNode(File) ends
+
+	public static JsonSchema getSchemaNode(URL schemaFile) throws IOException, ProcessingException {
+		final JsonNode schemaNode = getJsonNode(schemaFile);
+		return _getSchemaNode(schemaNode);
+	} // getSchemaNode(URL) ends
+
+	public static JsonSchema getSchemaNodeFromResource(String resource) throws IOException, ProcessingException {
+		final JsonNode schemaNode = getJsonNodeFromResource(resource);
+		return _getSchemaNode(schemaNode);
+	} // getSchemaNode() ends
+
+	public static void validateJson(JsonSchema jsonSchemaNode, JsonNode jsonNode) throws ProcessingException {
+		ProcessingReport report = jsonSchemaNode.validate(jsonNode);
+		if (!report.isSuccess()) {
+			for (ProcessingMessage processingMessage : report) {
+				throw new ProcessingException(processingMessage);
+			}
+		}
+	} // validateJson(Node) ends
+
+	public static boolean isJsonValid(JsonSchema jsonSchemaNode, JsonNode jsonNode) throws ProcessingException {
+		ProcessingReport report = jsonSchemaNode.validate(jsonNode);
+		return report.isSuccess();
+	} // validateJson(Node) ends
+
+	public static boolean isJsonValid(String schemaText, String jsonText) throws ProcessingException, IOException {
+		final JsonSchema schemaNode = getSchemaNode(schemaText);
+		final JsonNode jsonNode = getJsonNode(jsonText);
+		return isJsonValid(schemaNode, jsonNode);
+	} // validateJson(Node) ends
+
+	public static boolean isJsonValid(File schemaFile, File jsonFile) throws ProcessingException, IOException {
+		final JsonSchema schemaNode = getSchemaNode(schemaFile);
+		final JsonNode jsonNode = getJsonNode(jsonFile);
+		return isJsonValid(schemaNode, jsonNode);
+	} // validateJson(Node) ends
+
+	public static boolean isJsonValid(URL schemaURL, URL jsonURL) throws ProcessingException, IOException {
+		final JsonSchema schemaNode = getSchemaNode(schemaURL);
+		final JsonNode jsonNode = getJsonNode(jsonURL);
+		return isJsonValid(schemaNode, jsonNode);
+	} // validateJson(Node) ends
+
+	public static void validateJson(String schemaText, String jsonText) throws IOException, ProcessingException {
+		final JsonSchema schemaNode = getSchemaNode(schemaText);
+		final JsonNode jsonNode = getJsonNode(jsonText);
+		validateJson(schemaNode, jsonNode);
+	} // validateJson(text) ends
+
+	public static void validateJson(File schemaFile, File jsonFile) throws IOException, ProcessingException {
+		final JsonSchema schemaNode = getSchemaNode(schemaFile);
+		final JsonNode jsonNode = getJsonNode(jsonFile);
+		validateJson(schemaNode, jsonNode);
+	} // validateJson(File) ends
+
+	public static void validateJson(URL schemaDocument, URL jsonDocument) throws IOException, ProcessingException {
+		final JsonSchema schemaNode = getSchemaNode(schemaDocument);
+		final JsonNode jsonNode = getJsonNode(jsonDocument);
+		validateJson(schemaNode, jsonNode);
+	} // validateJson(URL) ends
+
+	public static void validateJsonResource(String schemaResource, String jsonResource)	throws IOException,
+																						ProcessingException {
+		final JsonSchema schemaNode = getSchemaNode(schemaResource);
+		final JsonNode jsonNode = getJsonNodeFromResource(jsonResource);
+		validateJson(schemaNode, jsonNode);
+	} // validateJsonResource() ends
+
+	private static JsonSchema _getSchemaNode(JsonNode jsonNode) throws ProcessingException {
+		final JsonNode schemaIdentifier = jsonNode.get(JSON_SCHEMA_IDENTIFIER_ELEMENT);
+		if (null == schemaIdentifier) {
+			((ObjectNode) jsonNode).put(JSON_SCHEMA_IDENTIFIER_ELEMENT, JSON_V4_SCHEMA_IDENTIFIER);
+		}
+
+		final JsonSchemaFactory factory = JsonSchemaFactory.byDefault();
+		return factory.getJsonSchema(jsonNode);
+	} // _getSchemaNode() ends
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/service/VerificationService.java b/verigraph/src/main/java/it/polito/escape/verify/service/VerificationService.java
new file mode 100644
index 0000000..1d31ae9
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/service/VerificationService.java
@@ -0,0 +1,1185 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.service;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.FilenameFilter;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+
+import javax.tools.Diagnostic;
+import javax.tools.DiagnosticCollector;
+import javax.tools.JavaCompiler;
+import javax.tools.JavaFileObject;
+import javax.tools.StandardJavaFileManager;
+import javax.tools.ToolProvider;
+import javax.ws.rs.ProcessingException;
+import javax.xml.bind.JAXBException;
+
+import org.json.simple.JSONArray;
+import org.json.simple.JSONObject;
+
+import com.fasterxml.jackson.databind.JsonNode;
+
+import it.polito.escape.verify.client.Neo4jManagerClient;
+import it.polito.escape.verify.exception.BadRequestException;
+import it.polito.escape.verify.exception.DataNotFoundException;
+import it.polito.escape.verify.exception.ForbiddenException;
+import it.polito.escape.verify.exception.InternalServerErrorException;
+import it.polito.escape.verify.model.Configuration;
+import it.polito.escape.verify.model.Entry;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Neighbour;
+import it.polito.escape.verify.model.Node;
+import it.polito.escape.verify.model.Test;
+import it.polito.escape.verify.model.Verification;
+import it.polito.escape.verify.resources.beans.VerificationBean;
+import it.polito.nffg.neo4j.jaxb.Paths;
+import qj.util.ReflectUtil;
+import qj.util.lang.DynamicClassLoader;
+
+public class VerificationService {
+
+	private static final String	generatorFolder		= System.getProperty("catalina.base")
+														+ "/webapps/verify/WEB-INF/classes/tests/j-verigraph-generator";
+
+	private static final String	generatorFolderForGrpc	= "service/src/tests/j-verigraph-generator";
+
+	private String				testClassGenerator	= generatorFolder + "/test_class_generator.py";
+
+	private String				testGenerator		= generatorFolder + "/test_generator.py";
+
+	public VerificationService() {
+
+	}
+
+	private Paths getPaths(Graph graph, Node sourceNode, Node destinationNode) {
+
+		String source = sourceNode.getName() + "_" + sourceNode.getId();
+		String destination = destinationNode.getName() + "_" + destinationNode.getId();
+
+		List<String> endpoints = new ArrayList<>();
+		List<String> firewalls = new ArrayList<>();
+		Map<String, List<Entry>> routingTable = new HashMap<>();
+
+		for (Node node : graph.getNodes().values()) {
+			// if firewall
+			if (node.getFunctional_type().equals("NF")) {
+				// add 2 connection points to RT
+				routingTable.put(node.getName() + "_" + node.getId() + "_in", new ArrayList<Entry>());
+				routingTable.put(node.getName() + "_" + node.getId() + "_out", new ArrayList<Entry>());
+				// add node to firewalls
+				firewalls.add(node.getName() + "_" + node.getId());
+				// scan neighbours
+				for (Neighbour neighbour : node.getNeighbours().values()) {
+					// check if neighbour is a firewall
+					Node hop = graph.searchNodeByName(neighbour.getName());
+					// if neighbour is a firewall connect to its input port
+					if (hop.getFunctional_type().equals("NF"))
+						routingTable.get(node.getName() + "_" + node.getId() + "_out")
+									.add(new Entry("output", neighbour.getName() + "_" + hop.getId() + "_in"));
+					else
+																// connect
+																// normally to
+																// node
+																routingTable.get(node.getName()	+ "_" + node.getId()
+																					+ "_out")
+																			.add(new Entry(	"output",
+																							neighbour.getName()	+ "_"
+																										+ hop.getId()));
+				}
+			}
+			// if endpoint
+			else {
+				// add endpoint to RT
+				routingTable.put(node.getName() + "_" + node.getId(), new ArrayList<Entry>());
+				// add to endpoints
+				endpoints.add(node.getName() + "_" + node.getId());
+				// scan neighbours
+				for (Neighbour neighbour : node.getNeighbours().values()) {
+					// check if neighbour is a firewall
+					Node hop = graph.searchNodeByName(neighbour.getName());
+					// if neighbour is a firewall connect to its input port
+					if (hop.getFunctional_type().equals("NF"))
+						routingTable.get(node.getName() + "_" + node.getId())
+									.add(new Entry("output", neighbour.getName() + "_" + hop.getId() + "_in"));
+					else {
+						// connect
+						// normally to
+						// node
+						routingTable.get(node.getName() + "_" + node.getId())
+									.add(new Entry("output", neighbour.getName() + "_" + hop.getId()));
+					}
+				}
+			}
+
+			// end node scan
+		}
+		// debug print
+		System.out.println("Endpoints:");
+		for (String endpoint : endpoints) {
+			System.out.println(endpoint);
+		}
+		System.out.println("Firewalls:");
+		for (String firewall : firewalls) {
+			System.out.println(firewall);
+		}
+		System.out.println("Source: " + source);
+		System.out.println("Destination: " + destination);
+		for (String key : routingTable.keySet()) {
+			System.out.println("RT for node " + key);
+			for (Entry entry : routingTable.get(key)) {
+				System.out.println("\t" + entry.getDirection() + "->" + entry.getDestination());
+			}
+		}
+		// end debug print
+
+		Neo4jManagerClient client = new Neo4jManagerClient(	"http://localhost:8080/neo4jmanager/rest/",
+															source,
+															destination,
+															endpoints,
+															firewalls,
+															routingTable);
+
+		Paths paths = null;
+		try {
+			paths = client.getPaths();
+		}
+		catch (JAXBException e) {
+			throw new InternalServerErrorException("Error generating input for neo4jmanager: " + e.getMessage());
+		}
+		catch (ProcessingException e) {
+			throw new InternalServerErrorException("Response of neo4jmanager doesn't contain any path: "
+													+ e.getMessage());
+		}
+		catch (IllegalStateException e) {
+			throw new InternalServerErrorException("Error getting a response from neo4jmanager, no input stream for paths or input stream already consumed: "
+													+ e.getMessage());
+		}
+		catch (Exception e) {
+			throw new InternalServerErrorException("Unable to continue due to a neo4jmanager error: " + e.getMessage());
+		}
+
+		return paths;
+
+	}
+
+	private List<String> sanitizePath(String path) {
+		List<String> newPath = new ArrayList<String>();
+		// find all nodes, i.e. all names between parentheses
+		Matcher m = Pattern.compile("\\(([^)]+)\\)").matcher(path);
+		while (m.find()) {
+			String node = m.group(1);
+
+			int spaceIndex = node.lastIndexOf("_");
+			if (spaceIndex != -1) {
+				node = node.substring(0, spaceIndex);
+				newPath.add(node);
+			}
+		}
+		return newPath;
+
+	}
+
+	private List<List<String>> sanitizePaths(Paths paths) {
+		List<List<String>> sanitizedPaths = new ArrayList<List<String>>();
+		for (String path : paths.getPath()) {
+			System.out.println("Original path: " + path);
+			List<String> newPath = sanitizePath(path);
+			sanitizedPaths.add(newPath);
+		}
+		return sanitizedPaths;
+	}
+
+	static private Map<String, Long> toMap(List<String> lst) {
+		return lst.stream().collect(Collectors.groupingBy(s -> s, Collectors.counting()));
+	}
+
+	private void eliminateLoopsInPaths(List<List<String>> sanitizedPaths) {
+		List<List<String>> pathsToBeRemoved = new ArrayList<List<String>>();
+
+		for (List<String> path : sanitizedPaths) {
+			Map<String, Long> occurrencesMap = toMap(path);
+			for (long occurrences : occurrencesMap.values()) {
+				if (occurrences > 1) {
+					pathsToBeRemoved.add(path);
+					break;
+				}
+			}
+		}
+		for (List<String> path : pathsToBeRemoved) {
+			sanitizedPaths.remove(path);
+		}
+	}
+
+	private void printListsOfStrings(String message, List<List<String>> lists) {
+		System.out.println(message);
+		for (List<String> element : lists) {
+			System.out.println(element);
+		}
+	}
+
+	private static File createTempDir(String prefix) throws IOException {
+		String tmpDirStr = System.getProperty("java.io.tmpdir");
+		if (tmpDirStr == null) {
+			throw new IOException("System property 'java.io.tmpdir' does not specify a tmp dir");
+		}
+
+		File tmpDir = new File(tmpDirStr);
+		if (!tmpDir.exists()) {
+			boolean created = tmpDir.mkdirs();
+			if (!created) {
+				throw new IOException("Unable to create tmp dir " + tmpDir);
+			}
+		}
+
+		File resultDir = null;
+		int suffix = (int) System.currentTimeMillis();
+		int failureCount = 0;
+		do {
+			resultDir = new File(tmpDir, prefix + suffix % 10000);
+			suffix++;
+			failureCount++;
+		} while (resultDir.exists() && failureCount < 50);
+
+		if (resultDir.exists()) {
+			throw new IOException(failureCount
+									+ " attempts to generate a non-existent directory name failed, giving up");
+		}
+		boolean created = resultDir.mkdir();
+		if (!created) {
+			throw new IOException("Failed to create tmp directory");
+		}
+
+		return resultDir;
+	}
+
+	@SuppressWarnings("unchecked")
+	private void generateChainsFile(Graph graph, List<List<String>> sanitizedPaths, String chainsFile) {
+		JSONObject root = new JSONObject();
+		JSONArray chains = new JSONArray();
+
+		int chainCounter = 0;
+
+		for (List<String> path : sanitizedPaths) {
+			Iterator<String> pathsIterator = path.iterator();
+			JSONObject chain = new JSONObject();
+			chain.put("id", ++chainCounter);
+			chain.put("flowspace", "tcp=80");
+			JSONArray nodes = new JSONArray();
+			while (pathsIterator.hasNext()) {
+				String nodeName = (String) pathsIterator.next();
+				Node currentNode = graph.searchNodeByName(nodeName);
+				if (currentNode == null) {
+					throw new InternalServerErrorException("Unable to generate 'chains.json' for neo4jmanager: node "
+															+ nodeName + " not found");
+				}
+				JSONObject node = new JSONObject();
+				node.put("name", currentNode.getName());
+				// if(currentNode.getFunctional_type().equals("firewall"))
+				// node.put("address", "ip_nat");
+				// else
+				node.put("address", "ip_" + currentNode.getName());
+				node.put("functional_type", currentNode.getFunctional_type());
+				nodes.add(node);
+				chain.put("nodes", nodes);
+			}
+			chains.add(chain);
+		}
+		root.put("chains", chains);
+
+		try (FileWriter file = new FileWriter(chainsFile)) {
+			file.write(root.toJSONString());
+			System.out.println("Successfully created 'chains.json' with the following content:");
+			System.out.println(root);
+		}
+		catch (IOException e) {
+			throw new InternalServerErrorException("Error saving 'chains.json' for neo4jmanager");
+		}
+
+	}
+
+	@SuppressWarnings("unchecked")
+	private void generateConfigFile(Graph graph, String configFile) {
+		JSONObject root = new JSONObject();
+		JSONArray nodes = new JSONArray();
+
+		for (Node n : graph.getNodes().values()) {
+			JSONObject node = new JSONObject();
+			// JSONArray configuration = new JSONArray();
+			Configuration nodeConfig = n.getConfiguration();
+			JsonNode configuration = nodeConfig.getConfiguration();
+
+			node.put("configuration", configuration);
+			node.put("id", nodeConfig.getId());
+			node.put("description", nodeConfig.getDescription());
+
+			nodes.add(node);
+
+		}
+		root.put("nodes", nodes);
+
+		try (FileWriter file = new FileWriter(configFile)) {
+			file.write(root.toJSONString());
+			System.out.println("Successfully created 'config.json' with the following content:");
+			System.out.println(root);
+		}
+		catch (IOException e) {
+			throw new InternalServerErrorException("Error saving 'config.json' for neo4jmanager");
+		}
+
+	}
+
+	private void printCommand(String[] cmd) {
+		for (String c : cmd) {
+			System.out.printf(c + " ");
+		}
+		System.out.println("");
+	}
+
+	private String platfromIndependentPath(String path) {
+		path = path.replaceAll("/", Matcher.quoteReplacement(Character.toString(File.separatorChar)));
+		return path;
+	}
+
+	private void generateTestScenarios(String chainsFile, String configFile, String scenarioFile) {
+
+		String[] cmd = {	"python", platfromIndependentPath(testClassGenerator), "-c",
+							platfromIndependentPath(chainsFile), "-f", platfromIndependentPath(configFile), "-o",
+							platfromIndependentPath(scenarioFile) };
+		printCommand(cmd);
+
+		ProcessBuilder pb = new ProcessBuilder(cmd);
+		pb.redirectErrorStream(true);
+		Process process;
+		try {
+			process = pb.start();
+
+			BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
+			String line;
+			while ((line = reader.readLine()) != null)
+				System.out.println("test_class_generator.py: " + line);
+			process.waitFor();
+			if (process.exitValue() != 0) {
+				throw new InternalServerErrorException("Unable to generate test scenario file for the verification request: test_class_generator returned "
+														+ process.exitValue());
+			}
+		}
+		catch (IOException e) {
+			throw new InternalServerErrorException("Error generating tests for Z3: unable to execute generator");
+		}
+		catch (InterruptedException e) {
+			throw new InternalServerErrorException("Error generating tests for Z3: generator got interrupted during execution");
+		}
+
+	}
+
+	private void generateTests(	int scenariosCounter, String scenariosBasename, String source, String destination,
+								String testsBasename) {
+
+		List<String> scenarios = new ArrayList<String>();
+		List<String> tests = new ArrayList<String>();
+		for (int i = 0; i < scenariosCounter; i++) {
+			scenarios.add(scenariosBasename + "_" + (i + 1) + ".java");
+			tests.add(testsBasename + "_" + (i + 1) + ".java");
+		}
+
+		for (int i = 0; i < scenariosCounter; i++) {
+			String[] cmd = {	"python", platfromIndependentPath(testGenerator), "-i",
+								platfromIndependentPath(scenarios.get(i)), "-o", platfromIndependentPath(tests.get(i)),
+								"-s", source, "-d", destination };
+			printCommand(cmd);
+
+			ProcessBuilder pb = new ProcessBuilder(cmd);
+			pb.redirectErrorStream(true);
+			Process process;
+			try {
+				process = pb.start();
+
+				BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
+				String line;
+				while ((line = reader.readLine()) != null)
+					System.out.println("test_generator.py: " + line);
+				process.waitFor();
+				if (process.exitValue() != 0) {
+					throw new InternalServerErrorException("Unable to generate test file for the verification request: test_generator returned "
+															+ process.exitValue());
+				}
+			}
+			catch (IOException e) {
+				throw new InternalServerErrorException("Error generating tests for Z3: unable to execute generator");
+			}
+			catch (InterruptedException e) {
+				throw new InternalServerErrorException("Error generating tests for Z3: generator got interrupted during execution");
+			}
+
+		}
+
+	}
+
+	private void prepareForCompilationAndExecution(	int scenariosCounter, String scenarioBasename, String testBasename,
+													List<File> sourceFiles, List<File> classFiles) {
+		for (int i = 0; i < scenariosCounter; i++) {
+			String scenario = scenarioBasename + "_" + (i + 1) + ".java";
+			sourceFiles.add(new File(scenario));
+			System.out.println("Scenario file " + scenario + " added to compilation");
+
+			String testSource = testBasename + "_" + (i + 1) + ".java";
+			String testClass = testBasename + "_" + (i + 1);
+
+			sourceFiles.add(new File(testSource));
+			System.out.println("Test file " + testSource + " added to copilation");
+			classFiles.add(new File(testClass));
+			System.out.println("Test file " + testClass + " added to execution");
+		}
+	}
+
+	private void compileFiles(List<File> files, String folder) {
+
+		JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
+		if (compiler == null) {
+			throw new InternalServerErrorException("Error getting the Java compiler: JDK >= 1.8 required");
+		}
+		StandardJavaFileManager fileManager = compiler.getStandardFileManager(null, null, null);
+
+		try {
+			// fileManager.setLocation(StandardLocation.CLASS_OUTPUT,
+			// Arrays.asList(new File(projectFolder)));
+
+			// String z3 = "/usr/lib/com.microsoft.z3.jar";
+			// List<String> optionList = new ArrayList<String>();
+			// optionList.add("-classpath");
+			// optionList.add(System.getProperty("java.class.path") + ":" + z3);
+			List<String> optionList = new ArrayList<String>();
+			optionList.add("-d");
+			optionList.add(folder);
+			DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<>();
+
+			boolean success = compiler
+										.getTask(	null,
+													fileManager,
+													diagnostics,
+													optionList,
+													null,
+													fileManager.getJavaFileObjectsFromFiles(files))
+										.call();
+			if (!success) {
+				Locale myLocale = Locale.getDefault();
+				StringBuilder msg = new StringBuilder();
+				msg.append("Error compiling Z3 test files: ");
+				for (Diagnostic<? extends JavaFileObject> err : diagnostics.getDiagnostics()) {
+					msg.append('\n');
+					msg.append(err.getKind());
+					msg.append(": ");
+					if (err.getSource() != null) {
+						msg.append(err.getSource().getName());
+					}
+					msg.append(':');
+					msg.append(err.getLineNumber());
+					msg.append(": ");
+					msg.append(err.getMessage(myLocale));
+				}
+				throw new InternalServerErrorException(msg.toString());
+			}
+			fileManager.close();
+
+		}
+		catch (IOException e) {
+			throw new InternalServerErrorException("Unable to set the location of the Z3 test files to be compiled");
+		}
+
+	}
+
+	private int runIt(File filename, String folder) {
+		int endIndex = filename.getName().lastIndexOf(".");
+		String filenameNoExtension;
+		if (endIndex == -1) {
+			filenameNoExtension = filename.getName();
+		}
+		else {
+			filenameNoExtension = filename.getName().substring(0, endIndex);
+			if (!filenameNoExtension.matches("\\w+")) {
+				filenameNoExtension = filename.getName();
+			}
+		}
+
+		System.out.println("Filename is: " + filenameNoExtension);
+		try {
+			Class<?> userClass = new DynamicClassLoader(folder).load("tests." + filenameNoExtension);
+			Object context = ReflectUtil.newInstance(userClass);
+			Object result = ReflectUtil.invoke("run", context);
+			return (int) result;
+		}
+		catch (Exception e) {
+			StringWriter errors = new StringWriter();
+			e.printStackTrace(new PrintWriter(errors));
+			throw new InternalServerErrorException("Error executing Z3 tests: "	+ e.getMessage()
+													+ ". There are errors in the Z3 model.");
+		}
+	}
+
+	private List<Test> runFiles(String folder, List<List<String>> paths, Graph graph, List<File> files) {
+		List<Test> tests = new ArrayList<Test>();
+		for (int i = 0; i < files.size(); i++) {
+			System.out.println("Running test file \"" + files.get(i).getAbsolutePath() + "\"");
+			int result = runIt(files.get(i), folder);
+			System.out.println("Execution returned: " + result);
+
+			List<Node> path = new ArrayList<Node>();
+			for (String nodeString : paths.get(i)) {
+				Node node = graph.searchNodeByName(nodeString);
+				path.add(node);
+			}
+			Test t = new Test(path, result);
+			tests.add(t);
+		}
+
+		return tests;
+	}
+
+	@SuppressWarnings("unused")
+	private static boolean deleteDir(File dir) {
+		if (dir.isDirectory()) {
+			String[] children = dir.list();
+			for (int i = 0; i < children.length; i++) {
+				boolean success = deleteDir(new File(dir, children[i]));
+				if (!success) {
+					return false;
+				}
+			}
+		}
+
+		return dir.delete();
+
+	}
+
+	@SuppressWarnings("unused")
+	private void deleteFilesWithPrefix(String directory, String prefix, String extension) {
+		final File scenarioFolder = new File(directory);
+		final File[] scenarioFiles = scenarioFolder.listFiles(new FilenameFilter() {
+
+			@Override
+			public boolean accept(final File dir, final String name) {
+				return name.matches(prefix + ".*\\." + extension);
+			}
+		});
+		for (final File file : scenarioFiles) {
+			if (!file.delete()) {
+				System.err.println("Can't remove " + file.getAbsolutePath());
+			}
+			else {
+				System.out.println("Removed file " + file.getAbsolutePath());
+			}
+		}
+	}
+
+	public Verification verify(long graphId, VerificationBean verificationBean) {
+		if (graphId <= 0) {
+			throw new ForbiddenException("Illegal graph id: " + graphId);
+		}
+		GraphService graphService = new GraphService();
+		Graph graph = graphService.getGraph(graphId);
+		if (graph == null) {
+			throw new DataNotFoundException("Graph with id " + graphId + " not found");
+		}
+		String source = verificationBean.getSource();
+		String destination = verificationBean.getDestination();
+		String type = verificationBean.getType();
+		if (source == null || source.equals("")) {
+			throw new BadRequestException("Please specify the 'source' parameter in your request");
+		}
+		if (destination == null || destination.equals("")) {
+			throw new BadRequestException("Please specify the 'destination' parameter in your request");
+		}
+		if (type == null || type.equals("")) {
+			throw new BadRequestException("Please specify the 'type' parameter in your request");
+		}
+
+		Node sourceNode = graph.searchNodeByName(verificationBean.getSource());
+		Node destinationNode = graph.searchNodeByName(verificationBean.getDestination());
+
+		if (sourceNode == null) {
+			throw new BadRequestException("The 'source' parameter '" + source + "' is not valid, please insert the name of an existing node");
+		}
+		if (destinationNode == null) {
+			throw new BadRequestException("The 'destination' parameter '" + destination + "' is not valid, please insert the name of an existing node");
+		}
+		if ((!type.equals("reachability")) && (!type.equals("isolation")) && (!type.equals("traversal"))) {
+			throw new BadRequestException("The 'type' parameter '"	+ type
+											+ "' is not valid: valid types are: 'reachability', 'isolation' and 'traversal'");
+		}
+
+		Verification v = null;
+		String middlebox;
+		Node middleboxNode;
+		switch (type) {
+			case "reachability":
+				v = reachabilityVerification(graph, sourceNode, destinationNode);
+				break;
+			case "isolation":
+				middlebox = verificationBean.getMiddlebox();
+				if (middlebox == null || middlebox.equals("")) {
+					throw new BadRequestException("Please specify the 'middlebox' parameter in your request");
+				}
+
+				middleboxNode = graph.searchNodeByName(middlebox);
+				if (middleboxNode == null) {
+					throw new BadRequestException("The 'middlebox' parameter '" + middlebox + "' is not valid, please insert the name of an existing node");
+				}
+				if (middleboxNode.getFunctional_type().equals("endpoint")) {
+					throw new BadRequestException("'"	+ middlebox
+													+ "' is of type 'endpoint', please choose a valid middlebox");
+				}
+				v = isolationVerification(graph, sourceNode, destinationNode, middleboxNode);
+				break;
+			case "traversal":
+				middlebox = verificationBean.getMiddlebox();
+				if (middlebox == null || middlebox.equals("")) {
+					throw new BadRequestException("Please specify the 'middlebox' parameter in your request");
+				}
+
+				middleboxNode = graph.searchNodeByName(middlebox);
+				if (middleboxNode == null) {
+					throw new BadRequestException("The 'middlebox' parameter '" + middlebox + "' is not valid, please insert the name of an existing node");
+				}
+				if (middleboxNode.getFunctional_type().equals("endpoint")) {
+					throw new BadRequestException("'"	+ middlebox
+													+ "' is of type 'endpoint', please choose a valid middlebox");
+				}
+				v = traversalVerification(graph, sourceNode, destinationNode, middleboxNode);
+				break;
+			default:
+				break;
+		}
+
+		return v;
+	}
+
+	private Verification isolationVerification(Graph graph, Node sourceNode, Node destinationNode, Node middleboxNode) {
+
+		Paths paths = getPaths(graph, sourceNode, destinationNode);
+		if (paths.getPath().size() == 0) {
+			return new Verification("UNSAT",
+									"There are no available paths between '"	+ sourceNode.getName() + "' and '"
+												+ destinationNode.getName() + "'");
+		}
+
+		List<List<String>> sanitizedPaths = sanitizePaths(paths);
+
+		printListsOfStrings("Before loops removal", sanitizedPaths);
+
+		eliminateLoopsInPaths(sanitizedPaths);
+
+		printListsOfStrings("After loops removal", sanitizedPaths);
+
+		if (sanitizedPaths.isEmpty()) {
+			return new Verification("UNSAT",
+									"There are no available paths between '"	+ sourceNode.getName() + "' and '"
+												+ destinationNode.getName() + "'");
+		}
+
+		List<Test> tests = extractTestsFromPaths(graph, sanitizedPaths, "UNKNWON");
+
+		extractPathsWithMiddlebox(sanitizedPaths, middleboxNode.getName());
+
+		if (sanitizedPaths.isEmpty()) {
+			return new Verification("UNSAT",
+									tests,
+									"There are no available paths between '"	+ sourceNode.getName() + "' and '"
+											+ destinationNode.getName() + "' which traverse middlebox '"
+											+ middleboxNode.getName() + "'. See below all the available paths.");
+		}
+
+		printListsOfStrings("Paths with middlebox '" + middleboxNode.getName() + "'", sanitizedPaths);
+
+		File tempDir = null;
+
+		try {
+			tempDir = createTempDir("isolation");
+		}
+		catch (IOException e) {
+			throw new InternalServerErrorException("Unable to perform verification: " + e.getMessage());
+		}
+
+		String chainsFile = tempDir.getAbsolutePath() + "/chains.json";
+		generateChainsFile(graph, sanitizedPaths, chainsFile);
+
+		String configFile = tempDir.getAbsolutePath() + "/config.json";
+		generateConfigFile(graph, configFile);
+
+		String isolationScenariosBasename = tempDir.getAbsolutePath() + "/IsolationScenario";
+		try{
+			generateTestScenarios(chainsFile, configFile, isolationScenariosBasename);
+		}catch(Exception ex){
+			testClassGenerator = generatorFolderForGrpc + "/test_class_generator.py";
+			generateTestScenarios(chainsFile, configFile, isolationScenariosBasename);
+		}
+
+		String isolationTestsBasename = tempDir.getAbsolutePath() + "/IsolationTest";
+		try{
+			generateTests(	sanitizedPaths.size(),
+					isolationScenariosBasename,
+					sourceNode.getName(),
+					middleboxNode.getName(),
+					isolationTestsBasename);
+		}catch(InternalServerErrorException ex){
+			testGenerator = generatorFolderForGrpc + "/test_generator.py";
+			generateTests(	sanitizedPaths.size(),
+					isolationScenariosBasename,
+					sourceNode.getName(),
+					middleboxNode.getName(),
+					isolationTestsBasename);
+		}
+
+		List<File> sourceFiles = new ArrayList<File>();
+		List<File> classFiles = new ArrayList<File>();
+		prepareForCompilationAndExecution(	sanitizedPaths.size(),
+				isolationScenariosBasename,
+											isolationTestsBasename,
+											sourceFiles,
+											classFiles);
+
+		compileFiles(sourceFiles, tempDir.getAbsolutePath());
+
+		tests = runFiles(tempDir.getAbsolutePath(), sanitizedPaths, graph, classFiles);
+
+		return evaluateIsolationResults(tests,
+										sourceNode.getName(),
+										destinationNode.getName(),
+										middleboxNode.getName());
+
+	}
+
+	private List<Test> extractTestsFromPaths(Graph graph, List<List<String>> paths, String result) {
+		List<Test> tests = new ArrayList<Test>();
+		for (List<String> path : paths) {
+			List<Node> nodes = new ArrayList<Node>();
+			for (String nodeName : path) {
+				nodes.add(graph.searchNodeByName(nodeName));
+			}
+			tests.add(new Test(nodes, result));
+		}
+		return tests;
+	}
+
+	private Verification evaluateIsolationResults(	List<Test> tests, String source, String destination,
+													String middlebox) {
+		Verification v = new Verification();
+		boolean isSat = false;
+		int unsatCounter = 0;
+		for (Test t : tests) {
+			v.getTests().add(t);
+
+			if (t.getResult().equals("SAT")) {
+				isSat = true;
+			}
+			else if (t.getResult().equals("UNKNOWN")) {
+				v.setResult("UNKNWON");
+				v.setComment("Isolation property with source '"	+ source + "', destination '" + destination
+								+ "' and middlebox '" + middlebox + "' is UNKNOWN because although '" + source
+								+ "' cannot reach '" + middlebox + "' in any path from '" + source + "' to '"
+								+ destination + "' which traverses middlebox '" + middlebox
+								+ "' at least one reachability test between '" + source + "' and '" + middlebox
+								+ "' returned UNKNOWN (see below all the paths that have been checked)");
+			}
+			else if (t.getResult().equals("UNSAT")) {
+				unsatCounter++;
+			}
+		}
+		if (isSat) {
+			v.setResult("UNSAT");
+			v.setComment("Isolation property with source '"	+ source + "', destination '" + destination
+							+ "' and middlebox '" + middlebox + "' is UNSATISFIED because reachability between '"
+							+ source + "' and '" + middlebox + "' is SATISFIED in at least one path between '" + source
+							+ "' and '" + destination + "' which traverses middlebox '" + middlebox
+							+ "' (see below all the paths that have been checked)");
+		}
+		else if (unsatCounter == tests.size()) {
+			v.setResult("SAT");
+			v.setComment("Isolation property with source '"	+ source + "', destination '" + destination
+							+ "' and middlebox '" + middlebox + "' is SATISFIED because reachability between '" + source
+							+ "' and '" + middlebox + "' is UNSATISFIED in all paths between '" + source + "' and '"
+							+ destination + "' which traverse middlebox '" + middlebox
+							+ "' (see below all the paths that have been checked)");
+		}
+		return v;
+
+	}
+
+	private void extractPathsWithMiddlebox(List<List<String>> sanitizedPaths, String middleboxName) {
+		List<List<String>> pathsToBeRemoved = new ArrayList<List<String>>();
+		for (List<String> path : sanitizedPaths) {
+			boolean middleboxFound = false;
+			for (String node : path) {
+				if (node.equals(middleboxName)) {
+					middleboxFound = true;
+					break;
+				}
+			}
+			if (!middleboxFound) {
+				pathsToBeRemoved.add(path);
+			}
+		}
+
+		for (List<String> path : pathsToBeRemoved) {
+			sanitizedPaths.remove(path);
+		}
+
+	}
+
+	private void extractPathsWithoutMiddlebox(List<List<String>> sanitizedPaths, String middleboxName) {
+		List<List<String>> pathsToBeRemoved = new ArrayList<List<String>>();
+		for (List<String> path : sanitizedPaths) {
+			boolean middleboxFound = false;
+			for (String node : path) {
+				if (node.equals(middleboxName)) {
+					middleboxFound = true;
+					break;
+				}
+			}
+			if (middleboxFound) {
+				pathsToBeRemoved.add(path);
+			}
+		}
+
+		for (List<String> path : pathsToBeRemoved) {
+			sanitizedPaths.remove(path);
+		}
+
+	}
+
+	private Verification traversalVerification(Graph graph, Node sourceNode, Node destinationNode, Node middleboxNode) {
+
+		Paths paths = getPaths(graph, sourceNode, destinationNode);
+		if (paths.getPath().size() == 0) {
+			return new Verification("UNSAT",
+									"There are no available paths between '"	+ sourceNode.getName() + "' and '"
+												+ destinationNode.getName() + "'");
+		}
+
+		List<List<String>> pathsBetweenSourceAndDestination = sanitizePaths(paths);
+
+		printListsOfStrings("Before loops removal", pathsBetweenSourceAndDestination);
+
+		eliminateLoopsInPaths(pathsBetweenSourceAndDestination);
+
+		printListsOfStrings("After loops removal", pathsBetweenSourceAndDestination);
+
+		if (pathsBetweenSourceAndDestination.isEmpty()) {
+			return new Verification("UNSAT",
+									"There are no available paths between '"	+ sourceNode.getName() + "' and '"
+												+ destinationNode.getName() + "'");
+		}
+
+		List<Test> tests = extractTestsFromPaths(graph, pathsBetweenSourceAndDestination, "UNKNOWN");
+
+		List<List<String>> pathsWithMiddlebox = new ArrayList<List<String>>();
+		for (List<String> path : pathsBetweenSourceAndDestination) {
+			pathsWithMiddlebox.add(path);
+		}
+
+		extractPathsWithMiddlebox(pathsWithMiddlebox, middleboxNode.getName());
+
+		if (pathsWithMiddlebox.isEmpty()) {
+			return new Verification("UNSAT",
+									tests,
+									"There are no paths between '"	+ sourceNode.getName() + "' and '"
+											+ destinationNode.getName() + "' which traverse middlebox '"
+											+ middleboxNode.getName() + "'. See below all the available paths");
+		}
+
+		printListsOfStrings("Paths with middlebox '" + middleboxNode.getName() + "'", pathsWithMiddlebox);
+
+		File tempDir = null;
+
+		try {
+			tempDir = createTempDir("traversal");
+		}
+		catch (IOException e) {
+			throw new InternalServerErrorException("Unable to perform verification: " + e.getMessage());
+		}
+
+		String chainsFile = tempDir.getAbsolutePath() + "/chains.json";
+		generateChainsFile(graph, pathsWithMiddlebox, chainsFile);
+
+		String configFile = tempDir.getAbsolutePath() + "/config.json";
+		generateConfigFile(graph, configFile);
+
+		String traversalScenariosBasename = tempDir.getAbsolutePath() + "/TraversalScenario";
+		try{
+			generateTestScenarios(chainsFile, configFile, traversalScenariosBasename);
+		}catch(Exception ex){
+			testClassGenerator = generatorFolderForGrpc + "/test_class_generator.py";
+			generateTestScenarios(chainsFile, configFile, traversalScenariosBasename);
+		}
+
+		String traversalTestsBasename = tempDir.getAbsolutePath() + "/TraversalTest";
+		try{
+			generateTests(	pathsWithMiddlebox.size(),
+					traversalScenariosBasename,
+					sourceNode.getName(),
+					destinationNode.getName(),
+					traversalTestsBasename);
+		}catch(InternalServerErrorException ex){
+			testGenerator = generatorFolderForGrpc + "/test_generator.py";
+			generateTests(	pathsWithMiddlebox.size(),
+					traversalScenariosBasename,
+					sourceNode.getName(),
+					destinationNode.getName(),
+					traversalTestsBasename);
+		}
+		List<File> sourceFiles = new ArrayList<File>();
+		List<File> classFiles = new ArrayList<File>();
+		prepareForCompilationAndExecution(	pathsWithMiddlebox.size(),
+											traversalScenariosBasename,
+											traversalTestsBasename,
+											sourceFiles,
+											classFiles);
+
+		compileFiles(sourceFiles, tempDir.getAbsolutePath());
+
+		tests = runFiles(tempDir.getAbsolutePath(), pathsWithMiddlebox, graph, classFiles);
+
+		for (Test t : tests) {
+			if (t.getResult().equals("UNSAT")) {
+				return new Verification("UNSAT",
+										tests,
+										"There is at least a path between '"	+ sourceNode.getName() + "' and '"
+												+ destinationNode.getName() + "' traversing middlebox '"
+												+ middleboxNode.getName() + "' where '" + sourceNode.getName()
+												+ "' cannot reach '" + destinationNode.getName()
+												+ "'. See below the paths that have been checked");
+			}
+			if (t.getResult().equals("UNKNOWN")) {
+				return new Verification("UNKNOWN",
+										tests,
+										"There is at least a path between '"	+ sourceNode.getName() + "' and '"
+												+ destinationNode.getName() + "' traversing middlebox '"
+												+ middleboxNode.getName() + "' where it is not guaranteed that '"
+												+ sourceNode.getName() + "' can effectively reach '"
+												+ destinationNode.getName()
+												+ "'. See below the paths that have been checked");
+			}
+		}
+
+		extractPathsWithoutMiddlebox(pathsBetweenSourceAndDestination, middleboxNode.getName());
+		printListsOfStrings("Paths without middlebox '" + middleboxNode.getName() + "'", pathsBetweenSourceAndDestination);
+
+		if (pathsBetweenSourceAndDestination.isEmpty()) {
+			return new Verification("SAT",
+									tests,
+									"All the paths between node '"	+ sourceNode.getName() + "' and '"
+											+ destinationNode.getName() + "' traverse middlebox '"
+											+ middleboxNode.getName() + "'");
+		}
+
+		tempDir = null;
+
+		try {
+			tempDir = createTempDir("traversal");
+		}
+		catch (IOException e) {
+			throw new InternalServerErrorException("Unable to perform verification: " + e.getMessage());
+		}
+
+		chainsFile = tempDir.getAbsolutePath() + "/chains.json";
+		generateChainsFile(graph, pathsBetweenSourceAndDestination, chainsFile);
+
+		configFile = tempDir.getAbsolutePath() + "/config.json";
+		generateConfigFile(graph, configFile);
+
+		traversalScenariosBasename = tempDir.getAbsolutePath() + "/TraversalScenario";
+		generateTestScenarios(chainsFile, configFile, traversalScenariosBasename);
+
+		traversalTestsBasename = tempDir.getAbsolutePath() + "/TraversalTest";
+		generateTests(	pathsBetweenSourceAndDestination.size(),
+						traversalScenariosBasename,
+						sourceNode.getName(),
+						destinationNode.getName(),
+						traversalTestsBasename);
+
+		sourceFiles = new ArrayList<File>();
+		classFiles = new ArrayList<File>();
+		prepareForCompilationAndExecution(	pathsBetweenSourceAndDestination.size(),
+											traversalScenariosBasename,
+											traversalTestsBasename,
+											sourceFiles,
+											classFiles);
+
+		compileFiles(sourceFiles, tempDir.getAbsolutePath());
+
+		tests = runFiles(tempDir.getAbsolutePath(), pathsBetweenSourceAndDestination, graph, classFiles);
+
+		return evaluateTraversalResults(tests,
+										sourceNode.getName(),
+										destinationNode.getName(),
+										middleboxNode.getName());
+
+	}
+
+	private Verification evaluateTraversalResults(	List<Test> tests, String source, String destination,
+													String middlebox) {
+		Verification v = new Verification();
+		boolean isSat = false;
+		int unsatCounter = 0;
+		for (Test t : tests) {
+			v.getTests().add(t);
+
+			if (t.getResult().equals("SAT")) {
+				isSat = true;
+			}
+			else if (t.getResult().equals("UNKNOWN")) {
+				v.setResult("UNKNWON");
+				v.setComment("There is at least one path from '"	+ source + "' to '" + destination
+								+ "' that doesn't traverse middlebox '" + middlebox
+								+ "' (see below all the paths that have been checked)");
+			}
+			else if (t.getResult().equals("UNSAT")) {
+				unsatCounter++;
+			}
+		}
+		if (isSat) {
+			v.setResult("UNSAT");
+			v.setComment("There is at least one path from '"	+ source + "' to '" + destination
+							+ "' that doesn't traverse middlebox '" + middlebox
+							+ "' (see below all the paths that have been checked)");
+		}
+		else if (unsatCounter == tests.size()) {
+			v.setResult("SAT");
+			v.setComment("The only available paths from '"	+ source + "' to '" + destination
+							+ "' are those that traverse middlebox '" + middlebox
+							+ "' (see below the alternative paths that have been checked and are unusable)");
+		}
+		return v;
+	}
+
+	private Verification reachabilityVerification(Graph graph, Node sourceNode, Node destinationNode) {
+		Paths paths = getPaths(graph, sourceNode, destinationNode);
+
+		if (paths.getPath().size() == 0) {
+			return new Verification("UNSAT",
+									"There are no available paths between '"	+ sourceNode.getName() + "' and '"
+												+ destinationNode.getName() + "'");
+		}
+
+		List<List<String>> sanitizedPaths = sanitizePaths(paths);
+
+		printListsOfStrings("Before loops removal", sanitizedPaths);
+
+		eliminateLoopsInPaths(sanitizedPaths);
+
+		printListsOfStrings("After loops removal", sanitizedPaths);
+
+		if (sanitizedPaths.isEmpty()) {
+			return new Verification("UNSAT",
+									"There are no available paths between '"	+ sourceNode.getName() + "' and '"
+												+ destinationNode.getName() + "'");
+		}
+
+		File tempDir = null;
+
+		try {
+			tempDir = createTempDir("reachability");
+		}
+		catch (IOException e) {
+			throw new InternalServerErrorException("Unable to perform verification: " + e.getMessage());
+		}
+
+		String chainsFile = tempDir.getAbsolutePath() + "/chains.json";
+		generateChainsFile(graph, sanitizedPaths, chainsFile);
+
+		String configFile = tempDir.getAbsolutePath() + "/config.json";
+		generateConfigFile(graph, configFile);
+
+		String reachabilityScenariosBasename = tempDir.getAbsolutePath() + "/ReachabilityScenario";
+		try{
+			generateTestScenarios(chainsFile, configFile, reachabilityScenariosBasename);
+		}catch(InternalServerErrorException ex){
+			testClassGenerator = generatorFolderForGrpc + "/test_class_generator.py";
+			generateTestScenarios(chainsFile, configFile, reachabilityScenariosBasename);
+		}
+
+
+		String reachabilityTestsBasename = tempDir.getAbsolutePath() + "/ReachabilityTest";
+		try{
+			generateTests(	sanitizedPaths.size(),
+					reachabilityScenariosBasename,
+					sourceNode.getName(),
+					destinationNode.getName(),
+					reachabilityTestsBasename);
+		}catch(InternalServerErrorException ex){
+			testGenerator = generatorFolderForGrpc + "/test_generator.py";
+			generateTests(	sanitizedPaths.size(),
+					reachabilityScenariosBasename,
+					sourceNode.getName(),
+					destinationNode.getName(),
+					reachabilityTestsBasename);
+		}
+		List<File> sourceFiles = new ArrayList<File>();
+		List<File> classFiles = new ArrayList<File>();
+		prepareForCompilationAndExecution(	sanitizedPaths.size(),
+											reachabilityScenariosBasename,
+											reachabilityTestsBasename,
+											sourceFiles,
+											classFiles);
+
+		compileFiles(sourceFiles, tempDir.getAbsolutePath());
+
+		List<Test> tests = runFiles(tempDir.getAbsolutePath(), sanitizedPaths, graph, classFiles);
+
+		return evaluateReachabilityResult(tests, sourceNode.getName(), destinationNode.getName());
+	}
+
+	private Verification evaluateReachabilityResult(List<Test> tests, String source, String destination) {
+		Verification v = new Verification();
+		boolean sat = false;
+		int unsat = 0;
+		for (Test t : tests) {
+			v.getTests().add(t);
+
+			if (t.getResult().equals("SAT")) {
+				sat = true;
+			}
+			else if (t.getResult().equals("UNKNOWN")) {
+				v.setResult("UNKNWON");
+				v.setComment("Reachability from '"	+ source + "' to '" + destination
+								+ "' is unknown. See all the checked paths below");
+			}
+			else if (t.getResult().equals("UNSAT")) {
+				unsat++;
+			}
+		}
+		if (sat) {
+			v.setResult("SAT");
+			v.setComment("There is at least one path '"	+ source + "' can use to reach '" + destination
+							+ "'. See all the available paths below");
+		}
+		else if (unsat == tests.size()) {
+			v.setResult("UNSAT");
+			v.setComment("There isn't any path '"	+ source + "' can use to reach '" + destination
+							+ "'. See all the checked paths below");
+		}
+		return v;
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/test/MultiThreadedTestCase.java b/verigraph/src/main/java/it/polito/escape/verify/test/MultiThreadedTestCase.java
new file mode 100644
index 0000000..7989b37
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/test/MultiThreadedTestCase.java
@@ -0,0 +1,201 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.test;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Random;
+import java.util.concurrent.Callable;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+
+import javax.ws.rs.core.Response;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import it.polito.escape.verify.client.VerifyClient;
+import it.polito.escape.verify.client.VerifyClientException;
+import it.polito.escape.verify.model.Configuration;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Node;
+
+public class MultiThreadedTestCase {
+
+	private void testUpdateGraphStatus(final int threadCount) throws InterruptedException, ExecutionException, JsonParseException, JsonMappingException, IOException, VerifyClientException {
+		final VerifyClient verifyClient = new VerifyClient("http://localhost:8080/verify/api");
+
+		Response retrieveGraphResponse = verifyClient.retrieveGraph(1);
+		String responseString = retrieveGraphResponse.readEntity(String.class);
+		System.out.println(responseString);
+
+		Graph graph = new ObjectMapper().readValue(responseString, Graph.class);
+
+		UpdateGraph task = new UpdateGraph(verifyClient, 1, graph);
+
+		List<MultiThreadedTestCase.UpdateGraph> tasks = Collections.nCopies(threadCount, task);
+		ExecutorService executorService = Executors.newFixedThreadPool(threadCount);
+
+		List<Future<Response>> futures = executorService.invokeAll(tasks);
+		List<Integer> resultList = new ArrayList<Integer>(futures.size());
+
+		// Check for exceptions
+		for (Future<Response> future : futures) {
+			// Throws an exception if an exception was thrown by the task.
+			resultList.add(future.get().getStatus());
+		}
+		// Validate the dimensions
+		Assert.assertEquals(threadCount, futures.size());
+		List<Integer> expectedList = new ArrayList<Integer>(threadCount);
+		for (int i = 1; i <= threadCount; i++) {
+			expectedList.add(200);
+		}
+		// Validate expected results
+		Assert.assertEquals(expectedList, resultList);
+	}
+
+	private void testUpdateGraph(final int threadCount) throws InterruptedException, ExecutionException, JsonParseException, JsonMappingException, IOException, VerifyClientException {
+		final VerifyClient verifyClient = new VerifyClient("http://localhost:8080/verify/api");
+
+		Response retrieveGraphResponse = verifyClient.retrieveGraph(2L);
+		String responseString = retrieveGraphResponse.readEntity(String.class);
+		System.out.println(responseString);
+
+		Graph graph = new ObjectMapper().readValue(responseString, Graph.class);
+
+		Node nodeToEdit = graph.getNodes().get(1L);
+		nodeToEdit.setFunctional_type("endpoint");
+		nodeToEdit.setConfiguration(new Configuration(nodeToEdit.getName(), "", new ObjectMapper().createArrayNode()));
+
+		String graphAsString = new ObjectMapper().writeValueAsString(graph);
+		System.out.println(graphAsString);
+
+		UpdateGraph task = new UpdateGraph(verifyClient, 2, graph);
+
+		List<MultiThreadedTestCase.UpdateGraph> tasks = Collections.nCopies(threadCount, task);
+		ExecutorService executorService = Executors.newFixedThreadPool(threadCount);
+
+		List<Future<Response>> futures = executorService.invokeAll(tasks);
+		List<String> resultList = new ArrayList<String>(futures.size());
+
+		// Check for exceptions
+		for (Future<Response> future : futures) {
+			// Throws an exception if an exception was thrown by the task.
+			resultList.add(future.get().readEntity(String.class));
+		}
+		// Validate dimensions
+		Assert.assertEquals(threadCount, futures.size());
+
+		List<String> expectedList = new ArrayList<String>(threadCount);
+		for (int i = 1; i <= threadCount; i++) {
+			expectedList.add(graphAsString);
+		}
+		// Validate expected results
+		Assert.assertEquals(expectedList, resultList);
+	}
+
+	private void testCreateGraphStatus(final int threadCount, Graph graph) throws InterruptedException, ExecutionException, JsonParseException, JsonMappingException, IOException {
+		final VerifyClient verifyClient = new VerifyClient("http://localhost:8080/verify/api");
+
+		CreateGraph task = new CreateGraph(verifyClient, graph);
+
+		List<MultiThreadedTestCase.CreateGraph> tasks = Collections.nCopies(threadCount, task);
+		ExecutorService executorService = Executors.newFixedThreadPool(threadCount);
+
+		List<Future<Response>> futures = executorService.invokeAll(tasks);
+		List<Integer> resultList = new ArrayList<Integer>(futures.size());
+
+		// Check for exceptions
+		for (Future<Response> future : futures) {
+			// Throws an exception if an exception was thrown by the task.
+			resultList.add(future.get().getStatus());
+		}
+		// Validate the IDs
+		Assert.assertEquals(threadCount, futures.size());
+
+		List<Integer> expectedList = new ArrayList<Integer>(threadCount);
+		for (int i = 1; i <= threadCount; i++) {
+			expectedList.add(201);
+		}
+		// Validate expected results
+		Assert.assertEquals(expectedList, resultList);
+	}
+
+	private int randInt(int min, int max){
+		Random rand = new Random();
+	    int randomNum = rand.nextInt((max - min) + 1) + min;
+	    return randomNum;
+	}
+
+	@Test
+	public void updateGraphStatusCheck() throws InterruptedException, ExecutionException, JsonParseException, JsonMappingException, IOException, VerifyClientException {
+		testUpdateGraphStatus(64);
+	}
+
+	@Test
+	public void updateGraphResponseCheck() throws InterruptedException, ExecutionException, JsonParseException, JsonMappingException, IOException, VerifyClientException {
+		testUpdateGraph(16);
+	}
+
+	@Test
+	public void createGraphStatusCheck() throws JsonParseException, JsonMappingException, InterruptedException, ExecutionException, IOException {
+		Graph graph = new Graph();
+		testCreateGraphStatus(8, graph);
+	}
+
+	class UpdateGraph implements Callable<Response> {
+
+		private VerifyClient	verifyClient;
+
+		private int				graphId;
+
+		private Graph			graph;
+
+		public UpdateGraph(VerifyClient verifyClient, int graphId, Graph graph) {
+			this.graphId = graphId;
+			this.graph = graph;
+			this.verifyClient = verifyClient;
+		}
+
+		@Override
+		public Response call() throws Exception {
+			Thread.sleep(randInt(0,2000));
+			Response updateGraphResponse = this.verifyClient.updateGraph(this.graphId, this.graph);
+			return updateGraphResponse;
+		}
+	}
+
+	class CreateGraph implements Callable<Response> {
+
+		private VerifyClient	verifyClient;
+
+		private Graph			graph;
+
+		public CreateGraph(VerifyClient verifyClient, Graph graph) {
+			this.graph = graph;
+			this.verifyClient = verifyClient;
+		}
+
+		@Override
+		public Response call() throws Exception {
+			Thread.sleep(randInt(0,2000));
+			return this.verifyClient.createGraph(this.graph);
+		}
+		
+	}
+}
\ No newline at end of file
diff --git a/verigraph/src/main/java/it/polito/escape/verify/test/Scalability.java b/verigraph/src/main/java/it/polito/escape/verify/test/Scalability.java
new file mode 100644
index 0000000..3039ca0
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/test/Scalability.java
@@ -0,0 +1,409 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.test;
+
+import java.sql.Timestamp;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
+import it.polito.escape.verify.client.VerifyClient;
+import it.polito.escape.verify.client.VerifyClientException;
+import it.polito.escape.verify.model.Configuration;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Neighbour;
+import it.polito.escape.verify.model.Node;
+import it.polito.escape.verify.model.Verification;
+
+public class Scalability {
+
+	private VerifyClient client = new VerifyClient("http://localhost:8080/verify/api");
+
+	public static void main(String[] args) throws VerifyClientException {
+		Scalability s = new Scalability();
+
+		reachabilityTest(s, 10);
+
+		isolationTest(s,1500);
+		traversalTest(s,600);
+	}
+
+	private static void reachabilityTest(Scalability s, int n) throws VerifyClientException {
+		System.out.printf("Reachability test with N=" + n + ": ");
+		printTimestamp();
+		Graph graph = generateNatScenario(n);
+		Graph createdGraph = s.client.createGraph(graph).readEntity(Graph.class);
+		Verification result = s.client.getReachability(createdGraph.getId(), "client", "server");
+		System.out.println("Test returned " + result.getResult());
+		System.out.printf("Finished reachability test with N=" + n + ": ");
+		printTimestamp();
+		System.out.println();
+	}
+
+	private static void isolationTest(Scalability s, int n) throws VerifyClientException {
+		System.out.printf("Isolation test with N=" + n + ": ");
+		printTimestamp();
+		Graph graph = generateNatScenario(n);
+		Graph createdGraph = s.client.createGraph(graph).readEntity(Graph.class);
+		Verification result = s.client.getIsolation(createdGraph.getId(), "client", "server", "firewall");
+		System.out.println("Test returned " + result.getResult());
+		System.out.printf("Finished isolation test with N=" + n + ": ");
+		printTimestamp();
+		System.out.println();
+	}
+
+	private static void traversalTest(Scalability s, int n) throws VerifyClientException {
+		System.out.printf("Traversal test with N=" + n + ": ");
+		printTimestamp();
+		Graph graph = generateNatScenario(n);
+		Graph createdGraph = s.client.createGraph(graph).readEntity(Graph.class);
+		Verification result = s.client.getTraversal(createdGraph.getId(), "client", "server", "firewall");
+		System.out.println("Test returned " + result.getResult());
+//		System.out.println("Result explanation: " + result.getComment());
+		System.out.printf("Finished traversal test with N=" + n + ": ");
+		printTimestamp();
+		System.out.println();
+	}
+
+	private static void printTimestamp() {
+		java.util.Date date= new java.util.Date();
+		System.out.println(new Timestamp(date.getTime()));
+	}
+
+	private static Graph generateNatScenario(int n) {
+		List<Node> nodes = new ArrayList<Node>();
+
+		Node client = new Node();
+		client.setName("client");
+		client.setFunctional_type("endhost");
+		ArrayNode clientConfigArray = new ObjectMapper().createArrayNode();
+		JsonNode clientConfig = new ObjectMapper().createObjectNode();
+		((ObjectNode)clientConfig).put("url", "www.facebook.com");
+		((ObjectNode)clientConfig).put("body", "word");
+		((ObjectNode)clientConfig).put("destination","server");
+		((ObjectNode)clientConfig).put("protocol", "HTTP_REQUEST");
+		clientConfigArray.add(clientConfig);
+		client.setConfiguration(new Configuration(client.getName(),"", clientConfigArray));
+
+		Map<Long, Neighbour> clientNeighbours = new HashMap<Long, Neighbour>();
+		clientNeighbours.put(1L, new Neighbour(1L, "nat1"));
+		client.setNeighbours(clientNeighbours );
+		//add client to list
+		nodes.add(client);
+
+		for(int i=0; i< n;i++){
+			Node nat = new Node();
+			nat.setId(i+1);
+			nat.setName("nat" + (i+1));
+			nat.setFunctional_type("nat");
+			ArrayNode configArray = new ObjectMapper().createArrayNode();
+
+			Map<Long, Neighbour> natNeighbours = new HashMap<Long, Neighbour>();
+
+			//set left neighbour for each node except the first
+			if(nat.getId() != 1){
+				natNeighbours.put(1L, new Neighbour(1L, "nat" + i));
+				configArray.add("client");
+				for (int j=1; j <= i; j++){
+					configArray.add("nat" + j);
+				}
+			}
+			//first nat: set only client as neighbour and natted node
+			else{
+				natNeighbours.put(1L, new Neighbour(1L, "client"));
+				configArray.add("client");
+			}
+			//set right neighbour for each node except the last
+			if(nat.getId() != n){
+				natNeighbours.put(2L, new Neighbour(1L, "nat" + (i+2)));
+			}
+			//last nat: set server as neighbour
+			else{
+				natNeighbours.put(2L, new Neighbour(1L, "server"));
+			}
+
+			nat.setNeighbours(natNeighbours);
+			nat.setConfiguration(new Configuration(nat.getName(),"", configArray));
+			
+			//add nat to list
+			nodes.add(nat);
+		}
+
+		Node server = new Node();
+		server.setName("server");
+		server.setFunctional_type("webserver");
+		ArrayNode serverConfigArray = new ObjectMapper().createArrayNode();
+		server.setConfiguration(new Configuration(server.getName(),"", serverConfigArray));
+
+		Map<Long, Neighbour> serverNeighbours = new HashMap<Long, Neighbour>();
+		serverNeighbours.put(1L, new Neighbour(1L, "nat" + (n)));
+		server.setNeighbours(serverNeighbours );
+
+		//add server to list
+		nodes.add(server);
+
+		//create graph
+		Graph g = new Graph();
+		Map<Long, Node> graphNodes = new HashMap<Long, Node>();
+		long index = 1L;
+		for (Node node : nodes){
+			graphNodes.put(index, node);
+			index++;
+		}
+		g.setNodes(graphNodes);
+
+		return g;
+	}
+
+	private static Graph generateFirewallScenario(int n) {
+		List<Node> nodes = new ArrayList<Node>();
+
+		Node client = new Node();
+		client.setName("client");
+		client.setFunctional_type("endhost");
+		ArrayNode clientConfigArray = new ObjectMapper().createArrayNode();
+		JsonNode clientConfig = new ObjectMapper().createObjectNode();
+		((ObjectNode)clientConfig).put("url", "www.facebook.com");
+		((ObjectNode)clientConfig).put("body", "word");
+		((ObjectNode)clientConfig).put("destination","server");
+		((ObjectNode)clientConfig).put("protocol", "HTTP_REQUEST");
+		clientConfigArray.add(clientConfig);
+		client.setConfiguration(new Configuration(client.getName(),"", clientConfigArray));
+
+		Map<Long, Neighbour> clientNeighbours = new HashMap<Long, Neighbour>();
+		clientNeighbours.put(1L, new Neighbour(1L, "firewall1"));
+		client.setNeighbours(clientNeighbours );
+		//add client to list
+		nodes.add(client);
+
+		for(int i=0; i< n;i++){
+			Node firewall = new Node();
+			firewall.setId(i+1);
+			firewall.setName("firewall" + (i+1));
+			firewall.setFunctional_type("firewall");
+			ArrayNode configArray = new ObjectMapper().createArrayNode();
+
+			Map<Long, Neighbour> natNeighbours = new HashMap<Long, Neighbour>();
+
+			//set left neighbour for each node except the first
+			if(firewall.getId() != 1){
+				natNeighbours.put(1L, new Neighbour(1L, "firewall" + i));
+			}
+			//first firewall: set only client as neighbour and natted node
+			else{
+				natNeighbours.put(1L, new Neighbour(1L, "client"));
+			}
+			//set right neighbour for each node except the last
+			if(firewall.getId() != n){
+				natNeighbours.put(2L, new Neighbour(1L, "firewall" + (i+2)));
+			}
+			//last firewall: set server as neighbour
+			else{
+				natNeighbours.put(2L, new Neighbour(1L, "server"));
+			}
+
+			firewall.setNeighbours(natNeighbours);
+			firewall.setConfiguration(new Configuration(firewall.getName(),"", configArray));
+
+			//add nat to list
+			nodes.add(firewall);
+		}
+
+		Node server = new Node();
+		server.setName("server");
+		server.setFunctional_type("webserver");
+		ArrayNode serverConfigArray = new ObjectMapper().createArrayNode();
+		server.setConfiguration(new Configuration(server.getName(),"", serverConfigArray));
+
+		Map<Long, Neighbour> serverNeighbours = new HashMap<Long, Neighbour>();
+		serverNeighbours.put(1L, new Neighbour(1L, "firewall" + (n)));
+		server.setNeighbours(serverNeighbours );
+
+		//add server to list
+		nodes.add(server);
+
+		//create graph
+		Graph g = new Graph();
+		Map<Long, Node> graphNodes = new HashMap<Long, Node>();
+		long index = 1L;
+		for (Node node : nodes){
+			graphNodes.put(index, node);
+			index++;
+		}
+		g.setNodes(graphNodes);
+
+		return g;
+	}
+
+	private static Graph generateScenario(int n) {
+		List<Node> nodes = new ArrayList<Node>();
+
+		Node firewall = new Node();
+		firewall.setName("firewall");
+		firewall.setFunctional_type("firewall");
+		ArrayNode firewallConfigArray = new ObjectMapper().createArrayNode();
+		Map<Long, Neighbour> firewallNeighbours = new HashMap<Long, Neighbour>();
+
+		for (int i=0; i < n; i++){
+			if(i!=0){
+				JsonNode firewallEntry = new ObjectMapper().createObjectNode();
+				((ObjectNode) firewallEntry).put("server", "client" + (i+1));
+				firewallConfigArray.add(firewallEntry);
+			}
+			firewallNeighbours.put(new Long(i+1), new Neighbour(new Long(i+1), "client" + (i+1)));
+		}
+
+		firewallNeighbours.put(new Long(n+1), new Neighbour(new Long(n+1), "server"));
+		
+		firewall.setConfiguration(new Configuration(firewall.getName(),"", firewallConfigArray));
+
+
+		firewall.setNeighbours(firewallNeighbours );
+		//add client to list
+		nodes.add(firewall);
+
+		for(int i=0; i< n;i++){
+			Node client = new Node();
+			client.setId(i+1);
+			client.setName("client" + (i+1));
+			client.setFunctional_type("endhost");
+			ArrayNode clientConfigArray = new ObjectMapper().createArrayNode();
+			JsonNode clientConfig = new ObjectMapper().createObjectNode();
+			((ObjectNode)clientConfig).put("url", "www.facebook.com");
+			((ObjectNode)clientConfig).put("body", "word");
+			((ObjectNode)clientConfig).put("destination","server");
+			((ObjectNode)clientConfig).put("protocol", "HTTP_REQUEST");
+			clientConfigArray.add(clientConfig);
+
+			Map<Long, Neighbour> clientNeighbours = new HashMap<Long, Neighbour>();
+
+			clientNeighbours.put(1L, new Neighbour(1L, "firewall"));
+									
+			client.setNeighbours(clientNeighbours);
+			client.setConfiguration(new Configuration(client.getName(),"", clientConfigArray));
+
+			//add client to list
+			nodes.add(client);
+		}
+
+		Node server = new Node();
+		server.setName("server");
+		server.setFunctional_type("webserver");
+		ArrayNode serverConfigArray = new ObjectMapper().createArrayNode();
+		server.setConfiguration(new Configuration(server.getName(),"", serverConfigArray));
+
+		Map<Long, Neighbour> serverNeighbours = new HashMap<Long, Neighbour>();
+		serverNeighbours.put(1L, new Neighbour(1L, "firewall"));
+		server.setNeighbours(serverNeighbours );
+
+		//add server to list
+		nodes.add(server);
+
+		//create graph
+		Graph g = new Graph();
+		Map<Long, Node> graphNodes = new HashMap<Long, Node>();
+		long index = 1L;
+		for (Node node : nodes){
+			graphNodes.put(index, node);
+			index++;
+		}
+		g.setNodes(graphNodes);
+
+		return g;
+	}
+
+	private static Graph generateDpiScenario(int n) {
+		List<Node> nodes = new ArrayList<Node>();
+
+		Node client = new Node();
+		client.setName("client");
+		client.setFunctional_type("endhost");
+		ArrayNode clientConfigArray = new ObjectMapper().createArrayNode();
+		JsonNode clientConfig = new ObjectMapper().createObjectNode();
+		((ObjectNode)clientConfig).put("url", "www.facebook.com");
+		((ObjectNode)clientConfig).put("body", "word");
+		((ObjectNode)clientConfig).put("destination","server");
+		((ObjectNode)clientConfig).put("protocol", "HTTP_REQUEST");
+		clientConfigArray.add(clientConfig);
+		client.setConfiguration(new Configuration(client.getName(),"", clientConfigArray));
+
+		Map<Long, Neighbour> clientNeighbours = new HashMap<Long, Neighbour>();
+		clientNeighbours.put(1L, new Neighbour(1L, "dpi1"));
+		client.setNeighbours(clientNeighbours );
+		//add client to list
+		nodes.add(client);
+
+		for(int i=0; i< n;i++){
+			Node dpi = new Node();
+			dpi.setId(i+1);
+			dpi.setName("dpi" + (i+1));
+			dpi.setFunctional_type("dpi");
+			ArrayNode configArray = new ObjectMapper().createArrayNode();
+			configArray.add("drug");
+
+			Map<Long, Neighbour> natNeighbours = new HashMap<Long, Neighbour>();
+
+			//set left neighbour for each node except the first
+			if(dpi.getId() != 1){
+				natNeighbours.put(1L, new Neighbour(1L, "dpi" + i));
+			}
+			//first firewall: set only client as neighbour and natted node
+			else{
+				natNeighbours.put(1L, new Neighbour(1L, "client"));
+			}
+			//set right neighbour for each node except the last
+			if(dpi.getId() != n){
+				natNeighbours.put(2L, new Neighbour(1L, "dpi" + (i+2)));
+			}
+			//last firewall: set server as neighbour
+			else{
+				natNeighbours.put(2L, new Neighbour(1L, "server"));
+			}
+
+			dpi.setNeighbours(natNeighbours);
+			dpi.setConfiguration(new Configuration(dpi.getName(),"", configArray));
+
+			//add nat to list
+			nodes.add(dpi);
+		}
+
+		Node server = new Node();
+		server.setName("server");
+		server.setFunctional_type("webserver");
+		ArrayNode serverConfigArray = new ObjectMapper().createArrayNode();
+		server.setConfiguration(new Configuration(server.getName(),"", serverConfigArray));
+
+		Map<Long, Neighbour> serverNeighbours = new HashMap<Long, Neighbour>();
+		serverNeighbours.put(1L, new Neighbour(1L, "dpi" + (n)));
+		server.setNeighbours(serverNeighbours );
+
+		//add server to list
+		nodes.add(server);
+
+		//create graph
+		Graph g = new Graph();
+		Map<Long, Node> graphNodes = new HashMap<Long, Node>();
+		long index = 1L;
+		for (Node node : nodes){
+			graphNodes.put(index, node);
+			index++;
+		}
+		g.setNodes(graphNodes);
+
+		return g;
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/test/TestCase.java b/verigraph/src/main/java/it/polito/escape/verify/test/TestCase.java
new file mode 100644
index 0000000..a4c85ab
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/test/TestCase.java
@@ -0,0 +1,161 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.test;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+
+import it.polito.escape.verify.model.Graph;
+
+@JsonInclude(JsonInclude.Include.NON_NULL)
+@JsonPropertyOrder({ "id", "name", "description", "policy_url_parameters", "result", "graph" })
+public class TestCase {
+
+	@JsonProperty("id")
+	private Integer				id;
+
+	@JsonProperty("name")
+	private String				name;
+
+	@JsonProperty("description")
+	private String				description;
+
+	@JsonProperty("policy_url_parameters")
+	private String				policyUrlParameters;
+
+	@JsonProperty("result")
+	private String				result;
+
+	@JsonProperty("graph")
+	private Graph				graph;
+
+	@JsonIgnore
+	private Map<String, Object>	additionalProperties	= new HashMap<String, Object>();
+
+	/**
+	 * @return The id
+	 */
+	@JsonProperty("id")
+	public Integer getId() {
+		return id;
+	}
+
+	/**
+	 * @param id
+	 *            The id
+	 */
+	@JsonProperty("id")
+	public void setId(Integer id) {
+		this.id = id;
+	}
+
+	/**
+	 * @return The name
+	 */
+	@JsonProperty("name")
+	public String getName() {
+		return name;
+	}
+
+	/**
+	 * @param name
+	 *            The name
+	 */
+	@JsonProperty("name")
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	/**
+	 * @return The description
+	 */
+	@JsonProperty("description")
+	public String getDescription() {
+		return description;
+	}
+
+	/**
+	 * @param description
+	 *            The description
+	 */
+	@JsonProperty("description")
+	public void setDescription(String description) {
+		this.description = description;
+	}
+
+	/**
+	 * @return The policyUrlParameters
+	 */
+	@JsonProperty("policy_url_parameters")
+	public String getPolicyUrlParameters() {
+		return policyUrlParameters;
+	}
+
+	/**
+	 * @param policyUrlParameters
+	 *            The policy_url_parameters
+	 */
+	@JsonProperty("policy_url_parameters")
+	public void setPolicyUrlParameters(String policyUrlParameters) {
+		this.policyUrlParameters = policyUrlParameters;
+	}
+
+	/**
+	 * @return The result
+	 */
+	@JsonProperty("result")
+	public String getResult() {
+		return result;
+	}
+
+	/**
+	 * @param result
+	 *            The result
+	 */
+	@JsonProperty("result")
+	public void setResult(String result) {
+		this.result = result;
+	}
+
+	/**
+	 * @return The graph
+	 */
+	@JsonProperty("graph")
+	public Graph getGraph() {
+		return graph;
+	}
+
+	/**
+	 * @param graph
+	 *            The graph
+	 */
+	@JsonProperty("graph")
+	public void setGraph(Graph graph) {
+		this.graph = graph;
+	}
+
+	@JsonAnyGetter
+	public Map<String, Object> getAdditionalProperties() {
+		return this.additionalProperties;
+	}
+
+	@JsonAnySetter
+	public void setAdditionalProperty(String name, Object value) {
+		this.additionalProperties.put(name, value);
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/test/TestExecutionException.java b/verigraph/src/main/java/it/polito/escape/verify/test/TestExecutionException.java
new file mode 100644
index 0000000..8babe7b
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/test/TestExecutionException.java
@@ -0,0 +1,24 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.test;
+
+
+public class TestExecutionException extends Exception{
+
+	/**
+	 *
+	 */
+	private static final long serialVersionUID = 4749065055436886197L;
+
+	public TestExecutionException(String message){
+		super(message);
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/test/Tester.java b/verigraph/src/main/java/it/polito/escape/verify/test/Tester.java
new file mode 100644
index 0000000..4b85e1e
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/test/Tester.java
@@ -0,0 +1,220 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.test;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FilenameFilter;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.ws.rs.client.Client;
+import javax.ws.rs.client.ClientBuilder;
+import javax.ws.rs.client.ResponseProcessingException;
+import javax.ws.rs.client.WebTarget;
+import javax.ws.rs.core.Response;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.github.fge.jsonschema.core.exceptions.ProcessingException;
+import com.github.fge.jsonschema.main.JsonSchema;
+
+import it.polito.escape.verify.client.VerifyClient;
+import it.polito.escape.verify.client.VerifyClientException;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Verification;
+import it.polito.escape.verify.service.ValidationUtils;
+
+public class Tester {
+
+	private File			schema;
+
+	private List<File>		testFiles	= new ArrayList<File>();
+
+	private List<TestCase>	testCases	= new ArrayList<TestCase>();
+
+	private String			target;
+
+	private VerifyClient	verifyClient;
+
+	public Tester(String target, File schema, File folder)	throws JsonParseException, JsonMappingException, IOException,
+															Exception {
+		init(target, schema, folder);
+	}
+
+	private void init(String target, File schema, File folder)	throws JsonParseException, JsonMappingException,
+																IOException, Exception {
+		this.target = target;
+		this.verifyClient = new VerifyClient(this.target);
+		this.schema = schema;
+		this.testFiles = getTests(folder);
+		this.testCases = getTestCases(this.testFiles);
+	}
+
+	public List<File> getTests(File folder) {
+		List<File> filesList = new ArrayList<File>();
+
+		System.out.println("Test folder set to '" + folder.getAbsolutePath() + "'");
+
+		File[] files = folder.listFiles(new FilenameFilter() {
+
+			@Override
+			public boolean accept(File dir, String name) {
+				return name.endsWith(".json");
+			}
+		});
+
+		for (File f : files) {
+			filesList.add(f);
+			System.out.println("File '" + f.getName() + "' added to test files");
+		}
+
+		return filesList;
+	}
+
+	public List<TestCase> getTestCases(List<File> files)	throws JsonParseException, JsonMappingException, IOException,
+															Exception {
+		List<TestCase> testCases = new ArrayList<TestCase>();
+
+		for (File file : files) {
+			validateTestFile(file);
+			try {
+				TestCase tc = new ObjectMapper().readValue(file, TestCase.class);
+				testCases.add(tc);
+			}
+			catch (Exception e) {
+				throw e;
+			}
+		}
+
+		return testCases;
+	}
+
+	private void runTestCases() throws VerifyClientException, TestExecutionException {
+		int counter = 0;
+		for (TestCase tc : this.testCases) {
+			String result = runTestCase(tc);
+			if (!result.equals(tc.getResult()))
+				throw new TestExecutionException("Error running test given in file '"	+ this.testFiles.get(counter).getName()
+									+ "'. Test returned '" + result + "' instead of '" + tc.getResult() + "'.");
+			else
+				System.out.println("Test given in file '"	+ this.testFiles.get(counter).getName() + "' returned '"
+									+ result + "' as expected");
+			counter++;
+		}
+		System.out.println("All tests PASSED");
+	}
+
+	private String runTestCase(TestCase tc) throws VerifyClientException, TestExecutionException{
+		Client client = ClientBuilder.newClient();
+
+		Graph graph = tc.getGraph();
+		Response response = null;
+		try{
+			response = this.verifyClient.createGraph(graph);
+		}
+		catch(ResponseProcessingException e){
+			throw new TestExecutionException("Response processing has failed: " + e.getResponse().readEntity(String.class));
+		}
+		catch(javax.ws.rs.ProcessingException e){
+			throw new TestExecutionException("HTTP request failed");
+		}
+		Graph createdGraph = response.readEntity(Graph.class);
+		String urlParams = tc.getPolicyUrlParameters();
+		WebTarget target = client.target(this.target + "/graphs/" + createdGraph.getId() + "/policy" + urlParams);
+
+		response = target.request().get();
+		Verification verification = response.readEntity(Verification.class);
+		return verification.getResult();
+	}
+
+	public void validateTestFile(File testFile) throws Exception {
+		JsonSchema schemaNode = null;
+		try {
+			schemaNode = ValidationUtils.getSchemaNode(schema);
+		}
+		catch (IOException e) {
+			throw new Exception("Unable to load '" + schema.getAbsolutePath() + "' schema file");
+		}
+		catch (ProcessingException e) {
+			throw new Exception("Unable to resolve '" + schema.getAbsolutePath() + "' schema file as a schema node");
+		}
+
+		JsonNode jsonNode;
+		try {
+			jsonNode = ValidationUtils.getJsonNode(testFile);
+		}
+		catch (IOException e) {
+			throw new Exception("Unable to load '" + testFile.getAbsolutePath() + "' as a json node");
+		}
+
+		try {
+			ValidationUtils.validateJson(schemaNode, jsonNode);
+		}
+		catch (ProcessingException e) {
+			throw new Exception("There were errors in the validation of file '"	+ testFile.getAbsolutePath()
+								+ "' against the json schema '" + schema.getAbsolutePath() + "': " + e.getMessage());
+
+		}
+	}
+
+	public static void main(String[] args)	throws JsonParseException, JsonMappingException, IOException,
+											VerifyClientException, Exception {
+		String folderName = System.getProperty("user.dir") + "/tester/testcases";
+		File folder = new File(folderName);
+		if (!folder.exists()) {
+			BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
+		    String s;
+		    do{
+		    	System.out.println("Please enter the testcases folder path: ");
+		    	s = in.readLine();
+		    	if (isValidpath(s)){
+		    		folder = new File(s);
+		    		break;
+		    	}
+		    }while (s != null && s.length() != 0);
+		    if(s == null)
+		    	System.exit(0);
+		}
+		String schemaName = System.getProperty("user.dir") + "/tester/testcase_schema.json";
+		File schema = new File(schemaName);
+		if (!schema.exists()) {
+			BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
+		    String s;
+		    do{
+		    	System.out.println("Please enter the full path of 'testcase_schema.json': ");
+		    	s = in.readLine();
+		    	if (isValidpath(s)){
+		    		folder = new File(s);
+		    		break;
+		    	}
+		    }while (s != null && s.length() != 0);
+		    if(s == null)
+		    	System.exit(0);
+		}
+
+		Tester tester = new Tester("http://localhost:8080/verify/api", schema, folder);
+
+		tester.runTestCases();
+
+	}
+
+	private static boolean isValidpath(String s) {
+		if (s==null)
+			return false;
+		File file = new File(s);
+		return file.exists();
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/validation/DpiValidator.java b/verigraph/src/main/java/it/polito/escape/verify/validation/DpiValidator.java
new file mode 100644
index 0000000..2666755
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/validation/DpiValidator.java
@@ -0,0 +1,45 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.validation;
+
+import com.fasterxml.jackson.databind.JsonNode;
+
+import it.polito.escape.verify.model.Configuration;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Node;
+import it.polito.escape.verify.validation.exception.ValidationException;
+
+public class DpiValidator implements ValidationInterface {
+
+	public DpiValidator(){
+
+	}
+
+	private void validateKey(String key) throws ValidationException {
+		if (!key.matches("\\w+"))
+			throw new ValidationException("'" + key + "' is not a valid configuration string for a 'dpi'");
+	}
+
+	@Override
+	public void validate(Graph graph, Node node, Configuration configuration) throws ValidationException {
+
+		JsonNode conf = configuration.getConfiguration();
+
+		if (!conf.isArray()) {
+			throw new ValidationException("Configuration of a 'dpi' must be an array");
+		}
+		for (JsonNode key : conf) {
+			if (!key.isTextual())
+				throw new ValidationException("Configuration of a 'dpi' must be an array of strings");
+			validateKey(key.asText());
+		}
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/validation/EndhostValidator.java b/verigraph/src/main/java/it/polito/escape/verify/validation/EndhostValidator.java
new file mode 100644
index 0000000..3d9eb75
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/validation/EndhostValidator.java
@@ -0,0 +1,25 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.validation;
+
+import it.polito.escape.verify.model.Configuration;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Node;
+import it.polito.escape.verify.validation.exception.ValidationException;
+
+
+public class EndhostValidator implements ValidationInterface {
+
+	@Override
+	public void validate(Graph graph, Node node, Configuration configuration) throws ValidationException {
+
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/validation/ValidationInterface.java b/verigraph/src/main/java/it/polito/escape/verify/validation/ValidationInterface.java
new file mode 100644
index 0000000..25608dd
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/validation/ValidationInterface.java
@@ -0,0 +1,21 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.validation;
+
+import it.polito.escape.verify.model.Configuration;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Node;
+import it.polito.escape.verify.validation.exception.ValidationException;
+
+public interface ValidationInterface {
+
+	void validate(Graph graph, Node node, Configuration configuration) throws ValidationException;
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/validation/VpnaccessValidator.java b/verigraph/src/main/java/it/polito/escape/verify/validation/VpnaccessValidator.java
new file mode 100644
index 0000000..6abd603
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/validation/VpnaccessValidator.java
@@ -0,0 +1,51 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.validation;
+
+import com.fasterxml.jackson.databind.JsonNode;
+
+import it.polito.escape.verify.model.Configuration;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Node;
+import it.polito.escape.verify.validation.exception.ValidationException;
+
+public class VpnaccessValidator implements ValidationInterface {
+
+	@Override
+	public void validate(Graph graph, Node node, Configuration configuration) throws ValidationException {
+		JsonNode configurationNode = configuration.getConfiguration();
+
+		if (!configurationNode.isArray())
+			throw new ValidationException("configuration must be an array");
+
+		for (JsonNode object : configurationNode) {
+			JsonNode vpnexit = object.get("vpnexit");
+			if (!vpnexit.isTextual())
+				throw new ValidationException("value corresponding to the key 'vpnexit' must be a string");
+			validateObject(graph, node, vpnexit.asText());
+		}
+
+	}
+
+	private void validateObject(Graph g, Node node, String field) throws ValidationException {
+		boolean isValid = false;
+		for (Node n : g.getNodes().values()) {
+			if ((n.getFunctional_type().equals("vpnexit")) && (n.getName().equals(field)))
+				isValid = true;
+		}
+
+		if (!isValid)
+			throw new ValidationException("'"	+ field + "' is not a valid value for the configuration of a type '"
+											+ node.getFunctional_type()
+											+ "'. Please use the name of an existing node of type 'vpnexit'.");
+
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/validation/VpnexitValidator.java b/verigraph/src/main/java/it/polito/escape/verify/validation/VpnexitValidator.java
new file mode 100644
index 0000000..782e124
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/validation/VpnexitValidator.java
@@ -0,0 +1,51 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.validation;
+
+import com.fasterxml.jackson.databind.JsonNode;
+
+import it.polito.escape.verify.model.Configuration;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Node;
+import it.polito.escape.verify.validation.exception.ValidationException;
+
+public class VpnexitValidator implements ValidationInterface {
+
+	@Override
+	public void validate(Graph graph, Node node, Configuration configuration) throws ValidationException {
+		JsonNode configurationNode = configuration.getConfiguration();
+
+		if (!configurationNode.isArray())
+			throw new ValidationException("configuration must be an array");
+
+		for (JsonNode object : configurationNode) {
+			JsonNode vpnexit = object.get("vpnaccess");
+			if (!vpnexit.isTextual())
+				throw new ValidationException("value corresponding to the key 'vpnaccess' must be a string");
+			validateObject(graph, node, vpnexit.asText());
+		}
+
+	}
+
+	private void validateObject(Graph g, Node node, String field) throws ValidationException {
+		boolean isValid = false;
+		for (Node n : g.getNodes().values()) {
+			if ((n.getFunctional_type().equals("vpnaccess")) && (n.getName().equals(field)))
+				isValid = true;
+		}
+
+		if (!isValid)
+			throw new ValidationException("'"	+ field + "' is not a valid value for the configuration of a type '"
+											+ node.getFunctional_type()
+											+ "'. Please use the name of an existing node of type 'vpnaccess'.");
+
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/escape/verify/validation/exception/ValidationException.java b/verigraph/src/main/java/it/polito/escape/verify/validation/exception/ValidationException.java
new file mode 100644
index 0000000..8b94748
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/escape/verify/validation/exception/ValidationException.java
@@ -0,0 +1,31 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.escape.verify.validation.exception;
+
+
+public class ValidationException extends Exception {
+
+	/**
+	 *
+	 */
+	private static final long serialVersionUID = -8251271078519549101L;
+
+	private String message;
+
+	public ValidationException(String message){
+//		super(message);
+		this.message = message;
+	}
+
+	@Override
+	public String getMessage() {
+		return this.message;
+	}
+}
diff --git a/verigraph/src/main/java/it/polito/grpc/Client.java b/verigraph/src/main/java/it/polito/grpc/Client.java
new file mode 100644
index 0000000..adc16da
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/grpc/Client.java
@@ -0,0 +1,550 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.grpc;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+
+import com.google.protobuf.Message;
+
+import io.grpc.ManagedChannel;
+import io.grpc.ManagedChannelBuilder;
+import io.grpc.StatusRuntimeException;
+import io.grpc.verigraph.ConfigurationGrpc;
+import io.grpc.verigraph.GetRequest;
+import io.grpc.verigraph.GraphGrpc;
+import io.grpc.verigraph.NeighbourGrpc;
+import io.grpc.verigraph.NewGraph;
+import io.grpc.verigraph.NewNeighbour;
+import io.grpc.verigraph.NewNode;
+import io.grpc.verigraph.NodeGrpc;
+import io.grpc.verigraph.NodeGrpc.FunctionalType;
+import io.grpc.verigraph.Policy;
+import io.grpc.verigraph.Policy.PolicyType;
+import io.grpc.verigraph.RequestID;
+import io.grpc.verigraph.Status;
+import io.grpc.verigraph.TestGrpc;
+import io.grpc.verigraph.VerificationGrpc;
+import io.grpc.verigraph.VerigraphGrpc;
+
+public class Client {
+
+	private final ManagedChannel channel;
+	private final VerigraphGrpc.VerigraphBlockingStub blockingStub;
+
+	public Client(String host, int port) {
+		this(ManagedChannelBuilder.forAddress(host, port).usePlaintext(true));
+	}
+
+	/** Construct client for accessing RouteGuide server using the existing channel. */
+	public Client(ManagedChannelBuilder<?> channelBuilder) {
+		channel = channelBuilder.build();
+		blockingStub = VerigraphGrpc.newBlockingStub(channel);
+	}
+
+	/** Get array of graphs */
+	public List<GraphGrpc> getGraphs() {
+		List<GraphGrpc> graphsRecveived = new ArrayList<GraphGrpc>();
+		GetRequest request = GetRequest.newBuilder().build();
+		Iterator<GraphGrpc> graphs;
+		try {
+			graphs = blockingStub.getGraphs(request);
+			while (graphs.hasNext()) {
+				GraphGrpc graph = graphs.next();
+				System.out.println("Graph id : "+graph.getId());
+				if(graph.getErrorMessage().equals("")){
+					System.out.println("Node id : "+graph.getId());
+					graphsRecveived.add(graph);
+				}else{
+					System.out.println("Error : " + graph.getErrorMessage());
+					return graphsRecveived;
+				}
+			}
+		} catch (StatusRuntimeException ex) {
+			System.err.println("RPC failed: " + ex.getStatus());
+		}
+		return graphsRecveived;
+	}
+
+	/** Create new Graph */
+	public NewGraph createGraph(GraphGrpc gr) {
+		NewGraph response;
+		try {
+			response = blockingStub.createGraph(gr);
+			if(response.getSuccess()){
+				System.out.println("Successful operation ");
+			}else{
+				System.out.println("Unsuccessful operation: " + response.getErrorMessage());
+			}
+		} catch (StatusRuntimeException e) {
+			System.err.println("RPC failed: " + e.getStatus());
+			return NewGraph.newBuilder().setSuccess(false).build();
+		}
+		return response;
+	}
+
+	/** Delete a Graph */
+	public boolean deleteGraph(long idGraph) {
+
+		RequestID id = RequestID.newBuilder().setIdGraph(idGraph).build();
+		Status response;
+		try {
+			response = blockingStub.deleteGraph(id);
+			if(response.getSuccess()){
+				System.out.println("Successful operation ");
+				return true;
+			}else{
+				System.out.println("Unsuccessful operation: " + response.getErrorMessage());
+			}
+		} catch (StatusRuntimeException e) {
+			System.err.println("RPC failed: " + e.getStatus());
+		}
+		return false;
+	}
+
+	/** Edits a single graph */
+	public NewGraph updateGraph(long idGraph, GraphGrpc newGraph) {
+
+		GraphGrpc gr = GraphGrpc.newBuilder(newGraph).setId(idGraph).build();
+		NewGraph response;
+		try {
+			response = blockingStub.updateGraph(gr);
+			if(response.getSuccess()){
+				System.out.println("Successful operation ");
+			}else{
+				System.out.println("Unsuccessful operation: " + response.getErrorMessage());
+			}
+		} catch (StatusRuntimeException e) {
+			System.err.println("RPC failed: " + e.getStatus());
+			return NewGraph.newBuilder().setSuccess(false).build();
+		}
+		return response;
+	}
+
+	/** Get a single graph*/
+	public GraphGrpc getGraph(long idGraph) {
+
+		RequestID request = RequestID.newBuilder().setIdGraph(idGraph).build() ;
+		try {
+			GraphGrpc graph = blockingStub.getGraph(request);
+			if(!graph.getErrorMessage().equals("")){
+				System.out.println("Error in operation: " + graph.getErrorMessage());
+			}
+			return graph;
+		} catch (StatusRuntimeException ex) {
+			System.err.println("RPC failed: " + ex.getStatus());
+			return null;
+		}
+	}
+
+	/** Verify a given policy*/
+	public VerificationGrpc verify(Policy policy) {
+
+		VerificationGrpc response;
+		try {
+			response = blockingStub.verifyPolicy(policy);
+			if(!response.getErrorMessage().equals("")){
+				System.out.println("Error in operation: " + response.getErrorMessage());
+			}
+			System.out.println("Result : "+response.getResult());
+			System.out.println("Comment : "+response.getComment());
+			//uncomment if you want to print the paths
+			/*for(TestGrpc test:response.getTestList()){
+				System.out.println("Test : "+test.getResult()+". Traversed nodes:");
+				for(NodeGrpc node:test.getNodeList()){
+					//prints only the name
+					System.out.println("Node "+node.getName());
+				}
+			}*/
+			return response;
+		} catch (StatusRuntimeException e) {
+			System.err.println("RPC failed: " + e.getStatus());
+			return null;
+		}
+	}
+
+	/*Node part*/
+
+	/** Get array of nodes */
+	public List<NodeGrpc> getNodes(long idGraph) {
+		List<NodeGrpc> nodesReceived = new ArrayList<NodeGrpc>();
+		RequestID request = RequestID.newBuilder().setIdGraph(idGraph).build() ;
+		Iterator<NodeGrpc> nodes;
+		try {
+			nodes = blockingStub.getNodes(request);
+			while (nodes.hasNext()) {
+				NodeGrpc node = nodes.next();
+				if(node.getErrorMessage().equals("")){
+					System.out.println("Node id : "+node.getId());
+					nodesReceived.add(node);
+				}else{
+					System.out.println("Error : " + node.getErrorMessage());
+					return nodesReceived;
+				}
+			}
+		} catch (StatusRuntimeException ex) {
+			System.err.println("RPC failed: " + ex.getStatus());
+		}
+		return nodesReceived;
+	}
+
+	/** Create new Node */
+	public NewNode createNode(NodeGrpc node, long idGraph) {
+
+		NewNode response;
+		try {
+			NodeGrpc n = NodeGrpc.newBuilder(node).setIdGraph(idGraph).build();
+			response = blockingStub.createNode(n);
+			if(response.getSuccess()){
+				System.out.println("Successful operation ");
+			}else{
+				System.out.println("Unsuccessful operation: " + response.getErrorMessage());
+			}
+		} catch (StatusRuntimeException e) {
+			System.err.println("RPC failed: " + e.getStatus());
+			return NewNode.newBuilder().setSuccess(false).build();
+		}
+		return response;
+	}
+
+	/** Delete a Node */
+	public boolean deleteNode(long idGraph, long idNode) {
+
+		RequestID id = RequestID.newBuilder().setIdGraph(idGraph).setIdNode(idNode).build();
+		Status response;
+		try {
+			response = blockingStub.deleteNode(id);
+			if(response.getSuccess()){
+				System.out.println("Successful operation ");
+				return true;
+			}else{
+				System.out.println("Unsuccessful operation: " + response.getErrorMessage());
+			}
+		} catch (StatusRuntimeException e) {
+			System.err.println("RPC failed: " + e.getStatus());
+		}
+		return false;
+	}
+
+	/** Edits a single Node */
+	public NewNode updateNode(long idGraph, long idNode, NodeGrpc node) {
+
+		NodeGrpc nu = NodeGrpc.newBuilder(node).setIdGraph(idGraph).setId(idNode).build();
+		NewNode response;
+		try {
+			response = blockingStub.updateNode(nu);
+			if(response.getSuccess()){
+				System.out.println("Successful operation ");
+			}else{
+				System.out.println("Unsuccessful operation: " + response.getErrorMessage());
+			}
+		} catch (StatusRuntimeException e) {
+			System.err.println("RPC failed: " + e.getStatus());
+			return NewNode.newBuilder().setSuccess(false).build();
+		}
+		return response;
+	}
+
+	/** Get a single Node*/
+	public NodeGrpc getNode(long idGraph, long idNode) {
+
+		RequestID request = RequestID.newBuilder().setIdGraph(idGraph).setIdNode(idNode).build() ;
+		try {
+			NodeGrpc node = blockingStub.getNode(request);
+			if(!node.getErrorMessage().equals("")){
+				System.out.println("Error in operation: " + node.getErrorMessage());
+			}
+			return 	node;
+		} catch (StatusRuntimeException ex) {
+			System.err.println("RPC failed: " + ex.getStatus());
+			return null;
+		}
+	}
+
+	/** Configure a single Node*/
+	public boolean configureNode(long idGraph, long idNode, ConfigurationGrpc configuration) {
+
+		try {
+			ConfigurationGrpc request = ConfigurationGrpc.newBuilder(configuration)
+					.setIdGraph(idGraph).setIdNode(idNode).build() ;
+
+			Status response = blockingStub.configureNode(request);
+			if(response.getSuccess()){
+				System.out.println("Successful operation ");
+				return true;
+			}else{
+				System.out.println("Unsuccessful operation: " + response.getErrorMessage());
+			}
+		} catch (StatusRuntimeException e) {
+			System.err.println("RPC failed: " + e.getStatus());
+		}
+		return false;
+	}
+
+	/*Neighbour part*/
+
+	/** Get array of neighbours */
+	public List<NeighbourGrpc> getNeighbours(long idGraph, long idNode) {
+
+		List<NeighbourGrpc> neighboursReceived = new ArrayList<NeighbourGrpc>();
+		RequestID request = RequestID.newBuilder().setIdGraph(idGraph).setIdNode(idNode).build() ;
+		Iterator<NeighbourGrpc> neighbours;
+		try {
+			neighbours = blockingStub.getNeighbours(request);
+			while (neighbours.hasNext()) {
+				NeighbourGrpc neighbour = neighbours.next();
+				if(neighbour.getErrorMessage().equals("")){
+					System.out.println("Neighbour id : "+neighbour.getId());
+					neighboursReceived.add(neighbour);
+				}else{
+					System.out.println("Error : " + neighbour.getErrorMessage());
+					return neighboursReceived;
+				}
+			}
+		} catch (StatusRuntimeException ex) {
+			System.err.println("RPC failed: " + ex.getStatus());
+		}
+		return neighboursReceived;
+	}
+
+	/** Create new Neighbour */
+	public NewNeighbour createNeighbour(NeighbourGrpc neighbour, long idGraph, long idNode) {
+
+		NewNeighbour response;
+		try {
+			NeighbourGrpc n = NeighbourGrpc.newBuilder(neighbour).setIdGraph(idGraph)
+					.setIdNode(idNode).build();
+			response = blockingStub.createNeighbour(n);
+			if(response.getSuccess()){
+				System.out.println("Successful operation ");
+			}else{
+				System.out.println("Unsuccessful operation: " + response.getErrorMessage());
+			}
+		} catch (StatusRuntimeException e) {
+			System.err.println("RPC failed: " + e.getStatus());
+			return NewNeighbour.newBuilder().setSuccess(false).build();
+		}
+		return response;
+	}
+
+	/** Delete a Neighbour */
+	public boolean deleteNeighbour(long idGraph, long idNode, long idNeighbour) {
+
+		RequestID id = RequestID.newBuilder().setIdGraph(idGraph).setIdNode(idNode).setIdNeighbour(idNeighbour).build();
+		Status response;
+		try {
+			response = blockingStub.deleteNeighbour(id);
+			if(response.getSuccess()){
+				System.out.println("Successful operation ");
+				return true;
+			}else{
+				System.out.println("Unsuccesful operation: " + response.getErrorMessage());
+			}
+		} catch (StatusRuntimeException e) {
+			System.err.println("RPC failed: " + e.getStatus());
+		}
+		return false;
+	}
+
+	/** Edits a single Neighbour */
+	public NewNeighbour updateNeighbour(long idGraph, long idNode, long idNeighbour, NeighbourGrpc neighbour) {
+
+		NeighbourGrpc nu = NeighbourGrpc.newBuilder(neighbour).setIdGraph(idGraph).setIdNode(idNode)
+										.setId(idNeighbour).build();
+		NewNeighbour response;
+		try {
+			response = blockingStub.updateNeighbour(nu);
+			if(response.getSuccess()){
+				System.out.println("Successful operation ");
+			}else{
+				System.out.println("Unsuccessful operation: " + response.getErrorMessage());
+			}
+		} catch (StatusRuntimeException e) {
+			System.err.println("RPC failed: " + e.getStatus());
+			return NewNeighbour.newBuilder().setSuccess(false).build();
+		}
+		return response;
+	}
+
+	/** Get a single Neighbour*/
+	public NeighbourGrpc getNeighbour(long idGraph, long idNode, long idNeighbour) {
+
+		RequestID request = RequestID.newBuilder().setIdGraph(idGraph).setIdNode(idNode).setIdNeighbour(idNeighbour).build() ;
+		try {
+			NeighbourGrpc neighbour = blockingStub.getNeighbour(request);
+			if(!neighbour.getErrorMessage().equals("")){
+				System.out.println("Error in operation: " + neighbour.getErrorMessage());
+			}
+			return neighbour;
+		} catch (StatusRuntimeException ex) {
+			System.err.println("RPC failed: " + ex.getStatus());
+			return null;
+		}
+	}
+
+	public void shutdown() throws InterruptedException {
+		channel.shutdown().awaitTermination(5, TimeUnit.SECONDS);
+	}
+
+	/** Test on the Server. */
+	public static void main(String[] args) throws Exception {
+
+		List<Long> listGraph = new ArrayList<Long>();	//list of ID
+
+		Client client = new Client("localhost" , 50051);
+		try {
+			NodeGrpc node1 = createNodeGrpc("Node1", "endhost", null, null);
+			List<NeighbourGrpc> neighbours = new ArrayList<NeighbourGrpc>();
+			NeighbourGrpc nb = createNeighbourGrpc("Node1");
+			neighbours.add(nb);
+			NodeGrpc node2 = createNodeGrpc("Node2", "endpoint", neighbours, null);
+			List<NodeGrpc> nodes = new ArrayList<NodeGrpc>();
+			nodes.add(node1);
+			nodes.add(node2);
+
+			GraphGrpc graph = createGraphGrpc(nodes);
+
+			NewGraph createdGraph = client.createGraph(graph);
+			if(createdGraph.getSuccess() == true){
+				listGraph.add(createdGraph.getGraph().getId());
+				System.out.println("Created graph with id :"+ createdGraph.getGraph().getId());
+			}
+
+			client.getGraphs();
+		} catch(Exception ex){
+			System.out.println("Error: " + ex.getMessage());
+			ex.printStackTrace();
+		}finally {
+			client.shutdown();
+		}
+	}
+
+	public static NeighbourGrpc createNeighbourGrpc(String name){
+		return NeighbourGrpc.newBuilder().setName(name).build();
+	}
+
+	public static NodeGrpc createNodeGrpc(String name, String functionalType, List<NeighbourGrpc> neighbours, ConfigurationGrpc conf) throws Exception{
+		NodeGrpc.Builder nb = NodeGrpc.newBuilder();
+
+		if(name != null)
+			nb.setName(name);
+		else
+			throw new Exception("Node must have a name");
+
+		if(functionalType != null)
+			nb.setFunctionalType(FunctionalType.valueOf(functionalType));
+		else
+			throw new Exception("Node must have a functional type");
+
+		if( neighbours!= null){
+			for(NeighbourGrpc value:neighbours)
+				nb.addNeighbour(value);
+		}
+		if(conf == null){
+			try{
+				conf = createConfigurationGrpc(null, null, null, null);
+			}catch(Exception e){
+				throw new Exception(e.getMessage());
+			}
+		}
+		nb.setConfiguration(conf);
+		return nb.build();
+	}
+
+	public static GraphGrpc createGraphGrpc(List<NodeGrpc> nodes){
+		GraphGrpc.Builder gb = GraphGrpc.newBuilder();
+		if(nodes != null){
+			for(NodeGrpc value:nodes)
+				gb.addNode(value);
+		}
+		return gb.build();
+	}
+
+	public static Policy createPolicy(String src, String dst, String type, String middlebox, long idGraph) throws IllegalArgumentException{
+		if(!validMiddlebox(type, middlebox))
+			throw new IllegalArgumentException("Not valid middlebox valid with this type");
+		Policy.Builder policy = Policy.newBuilder();
+		policy.setIdGraph(idGraph);
+		if(src != null)
+			policy.setSource(src);
+		else{
+			throw new IllegalArgumentException("Please insert source field");
+		}
+		if(dst != null)
+			policy.setDestination(dst);
+		else{
+			throw new IllegalArgumentException("Please insert destination field");
+		}
+		if(type != null)
+			policy.setType(PolicyType.valueOf(type));
+		if(middlebox != null)
+			policy.setMiddlebox(middlebox);
+		return policy.build();
+	}
+
+	public static ConfigurationGrpc createConfigurationGrpc(Map<String,String> parameters, List<String> lists, String id, String description) throws Exception{
+		ConfigurationGrpc.Builder cb = ConfigurationGrpc.newBuilder();
+		StringBuilder sb = new StringBuilder("[");
+		if(parameters != null && lists == null){
+			int i = 0;
+			sb.append("{");
+			for (String key: parameters.keySet()) {
+				sb.append("\"");
+				sb.append(key);
+				sb.append("\":\"");
+				sb.append(parameters.get(key));
+				sb.append("\"");
+				if((i+1)<parameters.keySet().size()){
+					sb.append(", ");
+				}
+				i++;
+			}
+			sb.append("}");
+		}
+		else if(parameters == null && lists != null){
+			int i = 0;
+			for (String value: lists) {
+				sb.append("\"");
+				sb.append(value);
+				sb.append("\"");
+				if((i+1)<lists.size()){
+					sb.append(", ");
+				}
+				i++;
+			}
+		}
+		else if(parameters != null && lists != null){
+			throw new Exception("Error, configuration must contains or a sequence name:value or sequence"
+					+ "of string, but not both");
+		}
+		sb.append("]");
+		cb.setConfiguration(sb.toString());
+		if(id != null)
+			cb.setId(id);
+		if(description != null)
+			cb.setDescription(description);
+		return cb.build();
+	}
+
+	private static boolean validMiddlebox(String type, String middlebox) {
+		if(type == null)
+			return false;
+		if(type.equals("reachability") && (middlebox == null || middlebox.equals("")))
+			return true;
+		if(type.equals("isolation") && !(middlebox == null || middlebox.equals("")))
+			return true;
+		if(type.equals("traversal") && !(middlebox == null || middlebox.equals("")))
+			return true;
+		return false;
+	}
+}
diff --git a/verigraph/src/main/java/it/polito/grpc/GrpcUtils.java b/verigraph/src/main/java/it/polito/grpc/GrpcUtils.java
new file mode 100644
index 0000000..0ed002c
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/grpc/GrpcUtils.java
@@ -0,0 +1,156 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.grpc;
+
+import java.io.IOException;
+import java.util.Map;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.google.common.base.Splitter;
+
+import io.grpc.verigraph.ConfigurationGrpc;
+import io.grpc.verigraph.GraphGrpc;
+import io.grpc.verigraph.NeighbourGrpc;
+import io.grpc.verigraph.NodeGrpc;
+import io.grpc.verigraph.TestGrpc;
+import io.grpc.verigraph.VerificationGrpc;
+import io.grpc.verigraph.NodeGrpc.FunctionalType;
+import it.polito.escape.verify.model.Configuration;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Neighbour;
+import it.polito.escape.verify.model.Node;
+import it.polito.escape.verify.model.Test;
+import it.polito.escape.verify.model.Verification;
+
+public class GrpcUtils {
+	private static final Logger logger = Logger.getLogger(GrpcUtils.class.getName());
+
+	public static NeighbourGrpc obtainNeighbour(Neighbour ne){
+		  return NeighbourGrpc.newBuilder()
+				  .setId(ne.getId())
+				  .setName(ne.getName())
+				  .build();
+	  }
+
+	  public static Neighbour deriveNeighbour(NeighbourGrpc request) {
+		  //id is not present
+		  Neighbour ne = new Neighbour();
+		  ne.setName(request.getName());
+		  return ne;
+	  }
+
+	  public static ConfigurationGrpc obtainConfiguration(Configuration conf){
+		  return ConfigurationGrpc.newBuilder()
+				  .setId(conf.getId())
+				  .setDescription(conf.getDescription())
+				  .setConfiguration(conf.getConfiguration().toString())
+				  .build();
+	  }
+
+	  public static Configuration deriveConfiguration(ConfigurationGrpc request) {
+		  Configuration conf = new Configuration();
+		  conf.setId(request.getId());
+		  conf.setDescription(request.getDescription());
+		  ObjectMapper mapper = new ObjectMapper();
+		  JsonNode rootNode = null;
+		  try {
+			  if ("".equals(request.getConfiguration()))
+				  rootNode=mapper.readTree("[]");
+			  else
+				  rootNode = mapper.readTree(request.getConfiguration());
+		  } catch (IOException e) {
+			  logger.log(Level.WARNING, e.getMessage());
+		  }
+		  conf.setConfiguration(rootNode);
+		  return conf;
+	  }
+
+	  public static NodeGrpc obtainNode(Node node) {
+		  NodeGrpc.Builder nr = NodeGrpc.newBuilder();
+		  nr.setId(node.getId());
+		  nr.setName(node.getName());
+		  nr.setFunctionalType(FunctionalType.valueOf(node.getFunctional_type()));
+		  for(Neighbour neighbour:node.getNeighbours().values()){
+			  NeighbourGrpc ng = obtainNeighbour(neighbour);
+			  nr.addNeighbour(ng);
+		  }
+		  nr.setConfiguration(obtainConfiguration(node.getConfiguration()));
+		  return nr.build();
+	  }
+
+	  public static Node deriveNode(NodeGrpc request) {
+		  //id is not present
+		  Node node = new Node();
+		  node.setName(request.getName());
+		  node.setFunctional_type(request.getFunctionalType().toString());
+		  Configuration conf = deriveConfiguration(request.getConfiguration());
+		  node.setConfiguration(conf);
+
+		  Map<Long,Neighbour> neighours = node.getNeighbours();
+		  long i = 1;
+		  for(NeighbourGrpc neighbour:request.getNeighbourList()){
+			  Neighbour ng = deriveNeighbour(neighbour);
+			  neighours.put(i++, ng);
+		  }
+
+		  return node;
+	  }
+
+	  public static GraphGrpc obtainGraph(Graph graph){
+		  GraphGrpc.Builder gr = GraphGrpc.newBuilder();
+		  gr.setId(graph.getId());
+		  for(Node node:graph.getNodes().values()){
+			  NodeGrpc ng = obtainNode(node);
+			  gr.addNode(ng);
+		  }
+		  return gr.build();
+	  }
+
+	  public static Graph deriveGraph(GraphGrpc request) {
+		//id is not present
+		  Graph graph = new Graph();
+
+		  long i=1;
+		  Map<Long, Node> nodes	= graph.getNodes();
+		  for(NodeGrpc node:request.getNodeList()){
+			  Node ng = deriveNode(node);
+			  nodes.put(i++, ng);
+		  }
+
+		  return graph;
+	  }
+
+	  public static VerificationGrpc obtainVerification(Verification verify){
+		  VerificationGrpc.Builder ver = VerificationGrpc.newBuilder();
+		  ver.setComment(verify.getComment());
+		  ver.setResult(verify.getResult());
+		  for(Test test:verify.getTests()){
+			  TestGrpc.Builder tst = TestGrpc.newBuilder().setResult(test.getResult());
+			  for(Node node:test.getPath()){
+				  NodeGrpc ng = obtainNode(node);
+				  tst.addNode(ng);
+			  }
+			  ver.addTest(tst);
+		  }
+		  return ver.build();
+	  }
+
+	  /**Intended for string that begins with "?"
+	   * */
+	  public static Map<String,String> getParamGivenString(String str){
+		  String string = str.substring(1);
+		  final Map<String, String> map = Splitter.on('&').trimResults().withKeyValueSeparator("=").
+				  split(string);
+		  return map;
+	  }
+}
diff --git a/verigraph/src/main/java/it/polito/grpc/README.rst b/verigraph/src/main/java/it/polito/grpc/README.rst
new file mode 100644
index 0000000..d089908
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/grpc/README.rst
@@ -0,0 +1,442 @@
+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+
+gRPC Project
+============
+
+This project contains the interfaces for a web service based on gRPC.
+
+How to install:
+---------------
+
+For gRPC interface, add to your ``pom.xml`` (in the project this part is
+already present):
+
+::
+
+        <dependency>
+            <groupId>io.grpc</groupId>
+            <artifactId>grpc-netty</artifactId>
+            <version>${grpc.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>io.grpc</groupId>
+            <artifactId>grpc-protobuf</artifactId>
+            <version>${grpc.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>io.grpc</groupId>
+            <artifactId>grpc-stub</artifactId>
+            <version>${grpc.version}</version>
+        </dependency>
+
+For protobuf-based codegen integrated with the Maven build system, you
+can use protobuf-maven-plugin :
+
+::
+
+        <build>
+            <extensions>
+                <extension>
+                    <groupId>kr.motd.maven</groupId>
+                    <artifactId>os-maven-plugin</artifactId>
+                    <version>1.4.1.Final</version>
+                </extension>
+            </extensions>
+            <plugins>
+                <plugin>
+                    <groupId>org.xolstice.maven.plugins</groupId>
+                    <artifactId>protobuf-maven-plugin</artifactId>
+                    <version>0.5.0</version>
+                    <configuration>
+                        <protocArtifact>com.google.protobuf:protoc:3.1.0:exe:${os.detected.classifier}</protocArtifact>
+                        <pluginId>grpc-java</pluginId>
+                        <pluginArtifact>io.grpc:protoc-gen-grpc-java:${grpc.version}:exe:${os.detected.classifier}</pluginArtifact>
+                    </configuration>
+                    <executions>
+                        <execution>
+                            <goals>
+                                <goal>compile</goal>
+                                <goal>compile-custom</goal>
+                            </goals>
+                        </execution>
+                    </executions>
+                </plugin>
+            </plugins>
+        </build>
+
+| In order to run the gRPC server and the junit test, you need to download the Manven Ant Task library
+  from `here <https://mvnrepository.com/artifact/org.apache.maven/maven-ant-tasks/2.1.3>`__
+  and copy into ``[verigraph]/lib/``
+
+| Due to the fact that the project is intended for Eclipse, you need to
+  install an additional Eclipse plugin because
+  `m2e <https://www.eclipse.org/m2e/>`__ does not evaluate the extension
+  specified in a ``pom.xml``. `Download
+  ``os-maven-plugin-1.5.0.Final.jar`` <http://repo1.maven.org/maven2/kr/motd/maven/os-maven-plugin/1.5.0.Final/os-maven-plugin-1.5.0.Final.jar>`__
+  and put it into the ``<ECLIPSE_HOME>/plugins`` directory.
+| (As you might have noticed, ``os-maven-plugin`` is a Maven extension,
+  a Maven plugin, and an Eclipse plugin.)
+
+If you are using IntelliJ IDEA, you should not have any problem.
+
+If you are using other IDEs such as NetBeans, you need to set the system
+properties ``os-maven-plugin`` sets manually when your IDE is launched.
+You usually use JVM's ``-D`` flags like the following:
+
+    | -Dos.detected.name=linux
+    | -Dos.detected.arch=x86\_64
+    | -Dos.detected.classifier=linux-x86\_64
+
+Included files:
+---------------
+
+Here you can find a brief description about useful files for the gRPC
+interface:
+
+**src/main/java:**
+
+-  *it.polito.grpc:*
+
+This package includes 2 classes that represent the client and server.
+
+    **Client.java:**
+
+    | Client of gRPC application. It implements all possible methods
+      necessary for communicate with server.
+    | It prints out the received response.
+    | Moreover it provides some static methods that are used for
+      creating the instances of requests.
+
+    **Service.java:**
+
+    | Server of gRPC application. It implements all possible methods
+      necessary for communicate with client.
+    | It saves the received request on log.
+    | This server could be accessed by multiple clients, because
+      synchronizes concurrent accesses.
+    | Each method that is possible to call is has the equivalent
+      operation in REST-interface.
+
+    **GrpcUtils.java:**
+
+    | This class provides some static methods that are used by
+      ``Service.java`` in order to translate a request into a class that
+      is accepted by Verigraph.
+    | Other methods are used to translate the class of Verigraph in the
+      proper gRPC response.
+    | These functionalities are exploited by test classes.
+    | Furthermore this set of methods is public, so in your application
+      you could call them, even if this should not be useful because
+      ``Client.java`` provides other high-level functions.
+
+-  *it.polito.grpc.test:*
+
+   This package includes classes for testing the gRPC application.
+
+    **GrpcServerTest.java:**
+
+    | For each possible method we test if works correctly.
+    | We create a fake client (so this test doesn't use the method that
+      are present in client class) and test if it receives the expected
+      response.
+    | In a nutshell, it tests the methods of Client in case of a fake
+      server.
+    | Please notice that the test prints some errors but this is
+      intentional, because the program tests also error case.
+    | Indeed, not all methods are tested, because we have another class
+      (ReachabilityTest.java) that is specialized for testing the
+      verification method.
+
+    **GrpcTest.java:**
+
+    | This set of tests is intended to control the most common use
+      cases, in particular all methods that are callable in Client and
+      Service class, apart from verifyPolicy for the same reason as
+      before.
+    | It tries also to raise an exception and verify if the behavior is
+      as expected.
+
+    **MultiThreadTest.java:**
+
+    | This test creates multiple clients that connect to the server and
+      verify is the result is correct. These methods test the
+      synchronization on
+    | server-side.
+
+    **ReachabilityTest.java:**
+
+    | This file tests the verification method, it exploits the test case
+      already present in the project and consequently has the certainty
+      of testing not so simple case. In particular it reads the file in
+      "src/main/webapp/json" and use this as starting point.
+    | Some exceptions are thrown in order to verify if they are handled
+      in a correct way.
+
+**src/main/proto:**
+
+    **verigraph.proto:**
+
+    | File containing the description of the service. This includes the
+      definition of all classes used in the application.
+    | Moreover contains the definition of the methods that is possible
+      to call.
+    | Each possible method called by REST API is mapped on a proper gRPC
+      method.
+    | In case of error a message containing the reason is returned to
+      the client.
+    | More details are available in the section about Proto Buffer.
+
+**taget/generated-sources/protobuf/java:**
+
+-  *io.grpc.verigraph:*
+
+   This package includes all classes generated from verigraph.proto by
+   means of protoc. For each object you can find 2 classes :
+
+       **{NameObject}Grpc.java**
+
+       **{NameObject}GrpcOrBuilder.java**
+
+       The first is the real implementation, the second is the
+       interface.
+
+**taget/generated-sources/protobuf/grpc-java:**
+
+-  *io.grpc.verigraph:*
+
+   This package includes a single class generated from verigraph.proto
+   by means of protoc.
+
+       **VerigraphGrpc.java:**
+
+       This is useful in order to create the stubs that are necessary to
+       communicate both for client and server.
+
+**lib:**
+
+This folder includes a jar used for compiling the project with Ant.
+
+    \*\*maven-ant-tasks-2.1.3.\ jar:**
+
+    This file is used by build.xml in order to include the maven
+    dependencies.
+
+**pom.xml:**
+
+| Modified in order to add all necessary dependencies. It contains also
+  the build tag used for create the generated-sources folders.
+| This part is added according to documentation of gRPC for java as
+  explained above in How To Install section.
+| For further clarification go to `this
+  link <https://github.com/grpc/grpc-java/blob/master/README.md>`__.
+
+**build.xml:**
+
+This ant file permit to run and compile the program in a simple way, it
+exploits the maven-ant-tasks-2.1.3.jar already present in project.
+
+It contains 3 fundamental tasks for gRPC interface:
+
+-  **build:** compile the program
+
+-  **run:** run both client and server
+
+-  **run-client :** run only client
+
+-  **run-server :** run only server
+
+-  **run-test :** launch all tests that are present in the package,
+   prints out the partial results and global result.
+
+Note that the execution of these tests may take up to 1-2 minutes when
+successful, according to your computer architecture.
+
+More Information About Proto Buffer:
+------------------------------------
+
+Further clarification about verigraph.proto:
+
+-  A ``simple RPC`` where the client sends a request to the server using
+   the stub and waits for a response to come back, just like a normal
+   function call.
+
+   .. code:: xml
+
+       // Obtains a graph
+       rpc GetGraph (RequestID) returns (GraphGrpc) {}
+
+In this case we send a request that contains the id of the graph and the
+response is a Graph.
+
+-  A ``server-side streaming RPC`` where the client sends a request to
+   the server and gets a stream to read a sequence of messages back. The
+   client reads from the returned stream until there are no more
+   messages. As you can see in our example, you specify a server-side
+   streaming method by placing the stream keyword before the response
+   type.
+
+   .. code:: xml
+
+
+       // Obtains a list of Nodes
+       rpc GetNodes (RequestID) returns (stream NodeGrpc) {}
+
+In this case we send a request that contains the id of the graph and the
+response is a list of Nodes that are inside graph.
+
+Further possibilities are available but in this project are not
+expolied. If you are curious see
+`here <http://www.grpc.io/docs/tutorials/basic/java.html#defining-the-service>`__.
+
+Our ``.proto`` file also contains protocol buffer message type
+definitions for all the request and response types used in our service
+methods - for example, here’s the ``RequestID`` message type:
+
+.. code:: xml
+
+        message RequestID {
+            int64 idGraph = 1;
+            int64 idNode = 2;
+            int64 idNeighbour = 3;
+        }   
+
+The " = 1", " = 2" markers on each element identify the unique "tag"
+that field uses in the binary encoding. Tag numbers 1-15 require one
+less byte to encode than higher numbers, so as an optimization you can
+decide to use those tags for the commonly used or repeated elements,
+leaving tags 16 and higher for less-commonly used optional elements.
+Each element in a repeated field requires re-encoding the tag number, so
+repeated fields are particularly good candidates for this optimization.
+
+Protocol buffers are the flexible, efficient, automated solution to
+solve exactly the problem of serialization. With protocol buffers, you
+write a .proto description of the data structure you wish to store. From
+that, the protocol buffer compiler creates a class that implements
+automatic encoding and parsing of the protocol buffer data with an
+efficient binary format. The generated class provides getters and
+setters for the fields that make up a protocol buffer and takes care of
+the details of reading and writing the protocol buffer as a unit.
+Importantly, the protocol buffer format supports the idea of extending
+the format over time in such a way that the code can still read data
+encoded with the old format.
+
+::
+
+    syntax = "proto3";
+
+    package verigraph;
+
+    option java_multiple_files = true;
+    option java_package = "io.grpc.verigraph";
+    option java_outer_classname = "VerigraphProto";
+    ```
+
+This .proto file works for protobuf 3, that is slightly different from
+the version 2, so be careful if you have code already installed.
+
+The .proto file starts with a package declaration, which helps to
+prevent naming conflicts between different projects. In Java, the
+package name is used as the ``Java package`` unless you have explicitly
+specified a java\_package, as we have here. Even if you do provide a
+``java_package``, you should still define a normal ``package`` as well
+to avoid name collisions in the Protocol Buffers name space as well as
+in non-Java languages.
+
+| After the package declaration, you can see two options that are
+  Java-specific: ``java_package`` and ``java_outer_classname``.
+  ``java_package`` specifies in what Java package name your generated
+  classes should live. If you don't specify this explicitly, it simply
+  matches the package name given by the package declaration, but these
+  names usually aren't appropriate Java package names (since they
+  usually don't start with a domain name). The ``java_outer_classname``
+  option defines the class name which should contain all of the classes
+  in this file. If you don't give a ``java_outer_classname explicitly``,
+  it will be generated by converting the file name to camel case. For
+  example, "my\_proto.proto" would, by default, use "MyProto" as the
+  outer class name.
+| In this case this file is not generated, because
+  ``java_multiple_files`` option is true, so for each message we
+  generate a different class.
+
+For further clarifications see
+`here <https://developers.google.com/protocol-buffers/docs/javatutorial>`__
+
+Notes
+-----
+
+For gRPC interface you need that neo4jmanager service is already
+deployed, so if this is not the case, please follow the instructions at
+this
+`link <https://github.com/netgroup-polito/verigraph/blob/a3c008a971a8b16552a20bf2484ebf8717735dd6/README.md>`__.
+
+In this version there are some modified files compared to the original
+`Verigraph project <https://github.com/netgroup-polito/verigraph>`__
+
+**it.polito.escape.verify.service.NodeService:**
+
+At line 213 we modified the path, because this service is intended to
+run not only in container, as Tomcat, so we added other possibility that
+files is placed in src/main/webapp/json/ folder.
+
+**it.polito.escape.verify.service.VerificationService:**
+
+In the original case it searches for python files in "webapps" folder,
+that is present if the service is deployed in a container, but absent
+otherwise. So we added another string that will be used in the case the
+service doesn't run in Tomcat.
+
+**it.polito.escape.verify.databese.DatabaseClass:**
+
+Like before we added the possibility that files are not in "webapps"
+folder, so is modified in order to run in any environment. Modification
+in method loadDataBase() and persistDatabase().
+
+| Pay attention that Python is needed for the project. If it is not
+  already present on your computer, please `download
+  it <https://www.python.org/download/releases/2.7.3/>`__.
+| It works fine with Python 2.7.3, or in general Python 2.
+
+| If you have downloaded a Python version for 64-bit architecture please
+  copy the files in "service/z3\_64" and paste in "service/build" and
+  substitute them,
+| because this project works with Python for 32-bit architecture.
+
+Python and Z3 must support the same architetcure.
+
+Moreover you need the following dependencies installed on your python
+distribution:
+
+- "requests" python package ->
+http://docs.python-requests.org/en/master/
+
+- "jsonschema" python package -> https://pypi.python.org/pypi/jsonschema
+
+| HINT - to install a package you can raise the following command (Bash
+  on Linux or DOS shell on Windows): python -m pip install jsonschema
+  python -m pip install requests
+| Pay attention that it is possible that you have to modify the PATH
+  environment variable because is necessary to address the python
+  folder, used for verification phase.
+
+Remember to read the
+`README.rtf <https://gitlab.com/serena.spinoso/DP2.2017.SpecialProject2.gRPC/tree/master>`__
+and to follow the instructions in order to deploy the Verigraph service.
+
+| In the latest version of Maven there is the possibility that the
+  downloaded files are incompatible with Java Version of the project
+  (1.8).
+| In this case you have to modify the file ``hk2-parent-2.4.0-b31.pom``
+  under your local Maven repository (e.g.
+  'C:\\Users\\Standard.m2\\repository')
+| and in the path ``\org\glassfish\hk2\hk2-parent\2.4.0-b31`` find the
+  file and modify at line 1098 (in section ``profile``) the ``jdk``
+  version to ``[1.8,)`` .
+
+| Admittedly, the version that is supported by the downloaded files from
+  Maven Dependencies is incompatible with jdk of the project.
+| So modify the file ``gson-2.3.pom`` in Maven repository, under
+  ``com\google\code\gson\gson\2.3`` directory, in particular line 91,
+  from ``[1.8,`` to ``[1.8,)``.
+
+This project was also tested on Linux Ubuntu 15.10.
diff --git a/verigraph/src/main/java/it/polito/grpc/Service.java b/verigraph/src/main/java/it/polito/grpc/Service.java
new file mode 100644
index 0000000..8a77d05
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/grpc/Service.java
@@ -0,0 +1,462 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.grpc;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import io.grpc.Server;
+import io.grpc.ServerBuilder;
+import io.grpc.stub.StreamObserver;
+import io.grpc.verigraph.ConfigurationGrpc;
+import io.grpc.verigraph.GetRequest;
+import io.grpc.verigraph.GraphGrpc;
+import io.grpc.verigraph.NeighbourGrpc;
+import io.grpc.verigraph.NewGraph;
+import io.grpc.verigraph.NewNeighbour;
+import io.grpc.verigraph.NewNode;
+import io.grpc.verigraph.NodeGrpc;
+import io.grpc.verigraph.Policy;
+import io.grpc.verigraph.RequestID;
+import io.grpc.verigraph.Status;
+import io.grpc.verigraph.VerificationGrpc;
+import io.grpc.verigraph.VerigraphGrpc;
+import it.polito.escape.verify.exception.BadRequestException;
+import it.polito.escape.verify.exception.DataNotFoundException;
+import it.polito.escape.verify.exception.ForbiddenException;
+import it.polito.escape.verify.model.Configuration;
+import it.polito.escape.verify.model.Graph;
+import it.polito.escape.verify.model.Neighbour;
+import it.polito.escape.verify.model.Node;
+import it.polito.escape.verify.model.Verification;
+import it.polito.escape.verify.resources.beans.VerificationBean;
+import it.polito.escape.verify.service.GraphService;
+import it.polito.escape.verify.service.NeighbourService;
+import it.polito.escape.verify.service.NodeService;
+import it.polito.escape.verify.service.VerificationService;
+
+public class Service {
+	  /** Port on which the server should run. */
+	  private static final Logger logger = Logger.getLogger(Service.class.getName());
+	  private static final int port = 50051;
+	  private static final String internalError = "Internal Server Error";
+	  private Server server;
+	  private GraphService graphService	= new GraphService();
+	  private VerificationService verificationService = new VerificationService();
+	  private NodeService nodeService = new NodeService();
+	  private NeighbourService neighboursService = new NeighbourService();
+
+	  public Service(int port)  {
+		  this(ServerBuilder.forPort(port), port);
+	  }
+
+	  /** Create a RouteGuide server using serverBuilder as a base and features as data. */
+	  public Service(ServerBuilder<?> serverBuilder, int port) {
+		  server = serverBuilder.addService(new VerigraphImpl())
+				  .build();
+	  }
+
+	  public void start() throws IOException {
+		  server.start();
+		  logger.info("Server started, listening on "+ port);
+		  Runtime.getRuntime().addShutdownHook(new Thread() {
+			  @Override
+			  public void run() {
+				  logger.info("*** Shutting down gRPC server since JVM is shutting down");
+				  Service.this.stop();
+				  logger.info("*** Server shut down");
+			  }
+		  });
+	  }
+
+	  public void stop() {
+		  if (server != null) {
+			  server.shutdown();
+		  }
+	  }
+
+	  private void blockUntilShutdown() throws InterruptedException {
+		  if (server != null) {
+			  server.awaitTermination();
+		  }
+	  }
+
+	  /** Main function to launch server from cmd. */
+	  public static void main(String[] args) throws IOException, InterruptedException {
+		  try{
+			  Service server = new Service(port);
+			  server.start();
+			  server.blockUntilShutdown();
+		  }
+		  catch(Exception ex){
+			  logger.log(Level.WARNING, ex.getMessage());
+		  }
+	  }
+
+	  /**Here start method of my impementation*/
+	  private class VerigraphImpl extends VerigraphGrpc.VerigraphImplBase{
+
+		  /** Here start methods of GraphResource*/
+		  @Override
+		  public void getGraphs(GetRequest request, StreamObserver<GraphGrpc> responseObserver) {
+			  try{
+				  for(Graph item : graphService.getAllGraphs()) {
+					  GraphGrpc gr = GrpcUtils.obtainGraph(item);
+					  responseObserver.onNext(gr);
+				  }
+			  }catch(Exception ex){
+				  GraphGrpc nr = GraphGrpc.newBuilder().setErrorMessage(internalError).build();
+				  responseObserver.onNext(nr);
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  responseObserver.onCompleted();
+		  }
+
+		  @Override
+		  public void createGraph(GraphGrpc request, StreamObserver<NewGraph> responseObserver) {
+			  NewGraph.Builder response = NewGraph.newBuilder();
+			  try{
+				  Graph graph = GrpcUtils.deriveGraph(request);
+				  Graph newGraph = graphService.addGraph(graph);
+				  response.setSuccess(true).setGraph(GrpcUtils.obtainGraph(newGraph));
+			  }catch(BadRequestException ex){
+				  response.setSuccess(false).setErrorMessage(ex.getMessage());
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  catch(Exception ex){
+				  response.setSuccess(false).setErrorMessage(internalError);
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  responseObserver.onNext(response.build());
+			  responseObserver.onCompleted();
+		  }
+
+		  @Override
+		  public void deleteGraph(RequestID request, StreamObserver<Status> responseObserver) {
+
+			  Status.Builder response = Status.newBuilder();
+			  try{
+				  graphService.removeGraph(request.getIdGraph());
+				  response.setSuccess(true);
+			  }catch(ForbiddenException ex){
+				  response.setSuccess(false).setErrorMessage(ex.getMessage());
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }	catch(Exception ex){
+				  response.setSuccess(false).setErrorMessage(internalError);
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  responseObserver.onNext(response.build());
+			  responseObserver.onCompleted();
+		  }
+
+		  @Override
+		  public void getGraph(RequestID request, StreamObserver<GraphGrpc> responseObserver) {
+			  try{
+				  Graph graph = graphService.getGraph(request.getIdGraph());
+				  GraphGrpc gr = GrpcUtils.obtainGraph(graph);
+				  responseObserver.onNext(gr);
+			  }catch(ForbiddenException | DataNotFoundException ex){
+				  GraphGrpc grError = GraphGrpc.newBuilder().setErrorMessage(ex.getMessage()).build();
+				  responseObserver.onNext(grError);
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }catch(Exception ex){
+				  GraphGrpc grError = GraphGrpc.newBuilder().setErrorMessage(internalError).build();
+				  responseObserver.onNext(grError);
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  responseObserver.onCompleted();
+		  }
+
+		  @Override
+		  public void updateGraph(GraphGrpc request, StreamObserver<NewGraph> responseObserver) {
+			  NewGraph.Builder response = NewGraph.newBuilder();
+			  try{
+				  Graph graph = GrpcUtils.deriveGraph(request);
+				  graph.setId(request.getId());
+				  Graph newGraph = graphService.updateGraph(graph);
+				  response.setSuccess(true).setGraph(GrpcUtils.obtainGraph(newGraph));
+			  }catch(ForbiddenException | DataNotFoundException | BadRequestException ex){
+				  response.setSuccess(false).setErrorMessage(ex.getMessage());
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }catch(Exception ex){
+				  response.setSuccess(false).setErrorMessage(internalError);
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  responseObserver.onNext(response.build());
+			  responseObserver.onCompleted();
+		  }
+
+		  @Override
+		  public void verifyPolicy(Policy request, StreamObserver<VerificationGrpc> responseObserver) {
+
+			  VerificationGrpc.Builder verification;
+			  try{
+				  //Convert request
+				  VerificationBean verify = new VerificationBean();
+				  verify.setDestination(request.getDestination());
+				  verify.setSource(request.getSource());
+				  verify.setType(request.getType().toString());
+				  verify.setMiddlebox(request.getMiddlebox());
+
+				  //Convert Response
+				  Verification ver = verificationService.verify(request.getIdGraph(), verify);
+				  verification = VerificationGrpc.newBuilder(GrpcUtils.obtainVerification(ver))
+						  			.setSuccessOfOperation(true);
+			  }catch(ForbiddenException | DataNotFoundException | BadRequestException ex){
+				  verification = VerificationGrpc.newBuilder().setSuccessOfOperation(false)
+						  			.setErrorMessage(ex.getMessage());
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }	catch(Exception ex){
+				  verification = VerificationGrpc.newBuilder().setSuccessOfOperation(false)
+						  			.setErrorMessage(internalError);
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  responseObserver.onNext(verification.build());
+			  responseObserver.onCompleted();
+		  }
+
+		  /** Here start methods of NodeResource*/
+
+		  @Override
+		  public void getNodes(RequestID request, StreamObserver<NodeGrpc> responseObserver) {
+			  try{
+				  for (Node item : nodeService.getAllNodes(request.getIdGraph())) {
+					  NodeGrpc nr = GrpcUtils.obtainNode(item);
+					  responseObserver.onNext(nr);
+				  }
+			  }catch(ForbiddenException | DataNotFoundException ex){
+				  NodeGrpc nr = NodeGrpc.newBuilder().setErrorMessage(ex.getMessage()).build();
+				  responseObserver.onNext(nr);
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }	catch(Exception ex){
+				  NodeGrpc nr = NodeGrpc.newBuilder().setErrorMessage(internalError).build();
+				  responseObserver.onNext(nr);
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  responseObserver.onCompleted();
+		  }
+
+		  @Override
+		  public void createNode(NodeGrpc request, StreamObserver<NewNode> responseObserver) {
+			  NewNode.Builder response = NewNode.newBuilder();
+			  try{
+				  Node node = GrpcUtils.deriveNode(request);
+				  Node newNode = nodeService.addNode(request.getIdGraph(), node);
+				  response.setSuccess(true).setNode(GrpcUtils.obtainNode(newNode));
+			  }catch(ForbiddenException | DataNotFoundException | BadRequestException ex){
+				  response.setSuccess(false).setErrorMessage(ex.getMessage());
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }catch(Exception ex){
+				  response.setSuccess(false).setErrorMessage(internalError);
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  responseObserver.onNext(response.build());
+			  responseObserver.onCompleted();
+		  }
+
+		  @Override
+		  public void deleteNode(RequestID request, StreamObserver<Status> responseObserver) {
+			  Status.Builder response = Status.newBuilder();
+			  try{
+				  nodeService.removeNode(request.getIdGraph(), request.getIdNode());
+				  response.setSuccess(true);
+			  }catch(ForbiddenException | DataNotFoundException ex){
+				  response.setSuccess(false).setErrorMessage(ex.getMessage());
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }catch(Exception ex){
+				  response.setSuccess(false).setErrorMessage(internalError);
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  responseObserver.onNext(response.build());
+			  responseObserver.onCompleted();
+		  }
+
+		  @Override
+		  public void getNode(RequestID request, StreamObserver<NodeGrpc> responseObserver) {
+			  NodeGrpc nr;
+			  try{
+				  Node node = nodeService.getNode(request.getIdGraph(), request.getIdNode());
+				  nr= GrpcUtils.obtainNode(node);
+			  }catch(ForbiddenException | DataNotFoundException ex){
+				  nr = NodeGrpc.newBuilder().setErrorMessage(ex.getMessage()).build();
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }catch(Exception ex){
+				  nr = NodeGrpc.newBuilder().setErrorMessage(internalError).build();
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  responseObserver.onNext(nr);
+			  responseObserver.onCompleted();
+		  }
+
+		  @Override
+		  public void updateNode(NodeGrpc request, StreamObserver<NewNode> responseObserver) {
+			  NewNode.Builder response = NewNode.newBuilder();
+			  try{
+				  Node node = GrpcUtils.deriveNode(request);
+				  node.setId(request.getId());
+				  Node newNode = nodeService.updateNode(request.getIdGraph(), node);
+				  response.setSuccess(true).setNode(GrpcUtils.obtainNode(newNode));
+			  }catch(ForbiddenException | DataNotFoundException | BadRequestException ex){
+				  response.setSuccess(false).setErrorMessage(ex.getMessage());
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }catch(Exception ex){
+				  response.setSuccess(false).setErrorMessage(internalError);
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  responseObserver.onNext(response.build());
+			  responseObserver.onCompleted();
+		  }
+
+		  @Override
+		  public void configureNode(ConfigurationGrpc request, StreamObserver<Status> responseObserver) {
+			  Status.Builder response = Status.newBuilder();
+			  try{
+				  if (request.getIdGraph() <= 0) {
+					  throw new ForbiddenException("Illegal graph id: " + request.getIdGraph());
+				  }
+				  if (request.getIdNode() <= 0) {
+					  throw new ForbiddenException("Illegal node id: " + request.getIdNode());
+				  }
+				  Graph graph = new GraphService().getGraph(request.getIdGraph());
+				  if (graph == null){
+					  throw new BadRequestException("Graph with id " + request.getIdGraph() + " not found");
+				  }
+				  Node node = nodeService.getNode(request.getIdGraph(), request.getIdNode());
+				  if (node == null){
+					  throw new BadRequestException("Node with id " + request.getIdNode() + " not found in graph with id " + request.getIdGraph());
+				  }
+				  Configuration nodeConfiguration = GrpcUtils.deriveConfiguration(request);
+				  Node nodeCopy = new Node();
+				  nodeCopy.setId(node.getId());
+				  nodeCopy.setName(node.getName());
+				  nodeCopy.setFunctional_type(node.getFunctional_type());
+				  Map<Long,Neighbour> nodes = new HashMap<Long,Neighbour>();
+				  nodes.putAll(node.getNeighbours());
+				  nodeCopy.setNeighbours(nodes);
+				  nodeConfiguration.setId(nodeCopy.getName());
+				  nodeCopy.setConfiguration(nodeConfiguration);
+
+				  Graph graphCopy = new Graph();
+				  graphCopy.setId(graph.getId());
+				  graphCopy.setNodes(new HashMap<Long, Node>(graph.getNodes()));
+				  graphCopy.getNodes().remove(node.getId());
+
+				  NodeService.validateNode(graphCopy, nodeCopy);
+
+				  graph.getNodes().put(request.getIdNode(), nodeCopy);
+				  response.setSuccess(true);
+			  }catch(ForbiddenException | BadRequestException ex){
+				  response.setSuccess(false).setErrorMessage(ex.getMessage());
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }catch(Exception ex){
+				  response.setSuccess(false).setErrorMessage(internalError);
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  responseObserver.onNext(response.build());
+			  responseObserver.onCompleted();
+		  }
+
+		  /** Here start methods of NeighbourResource*/
+		  @Override
+		  public void getNeighbours(RequestID request, StreamObserver<NeighbourGrpc> responseObserver) {
+			  try{
+				  for(Neighbour item : neighboursService.getAllNeighbours(request.getIdGraph(), request.getIdNode())) {
+					  NeighbourGrpc nr = GrpcUtils.obtainNeighbour(item);
+					  responseObserver.onNext(nr);
+				  }
+			  }catch(ForbiddenException | DataNotFoundException ex){
+				  NeighbourGrpc nr = NeighbourGrpc.newBuilder().setErrorMessage(ex.getMessage()).build();
+				  responseObserver.onNext(nr);
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }catch(Exception ex){
+				  NeighbourGrpc nr = NeighbourGrpc.newBuilder().setErrorMessage(internalError).build();
+				  responseObserver.onNext(nr);
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  responseObserver.onCompleted();
+		  }
+
+		  @Override
+		  public void createNeighbour(NeighbourGrpc request, StreamObserver<NewNeighbour> responseObserver) {
+			  NewNeighbour.Builder response = NewNeighbour.newBuilder();
+			  try{
+				  Neighbour neighbour = GrpcUtils.deriveNeighbour(request);
+				  Neighbour newNeighbour = neighboursService.addNeighbour(request.getIdGraph(), request.getIdNode(), neighbour);
+				  response.setSuccess(true).setNeighbour(GrpcUtils.obtainNeighbour(newNeighbour));
+			  }catch(ForbiddenException | DataNotFoundException | BadRequestException ex){
+				  response.setSuccess(false).setErrorMessage(ex.getMessage());
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }catch(Exception ex){
+				  response.setSuccess(false).setErrorMessage(ex.getMessage());
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  responseObserver.onNext(response.build());
+			  responseObserver.onCompleted();
+		  }
+
+		  @Override
+		  public void deleteNeighbour(RequestID request, StreamObserver<Status> responseObserver) {
+			  Status.Builder response = Status.newBuilder();
+			  try{
+				  neighboursService.removeNeighbour(request.getIdGraph(), request.getIdNode(), request.getIdNeighbour());
+				  response.setSuccess(true);
+			  }catch(ForbiddenException | DataNotFoundException ex){
+				  response.setSuccess(false).setErrorMessage(ex.getMessage());
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }catch(Exception ex){
+				  response.setSuccess(false).setErrorMessage(ex.getMessage());
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  responseObserver.onNext(response.build());
+			  responseObserver.onCompleted();
+		  }
+
+		  @Override
+		  public void getNeighbour(RequestID request, StreamObserver<NeighbourGrpc> responseObserver) {
+			  NeighbourGrpc nr;
+			  try{
+				  Neighbour neighbour = neighboursService.getNeighbour(request.getIdGraph(),
+						  request.getIdNode(), request.getIdNeighbour());
+				  nr = GrpcUtils.obtainNeighbour(neighbour);
+
+			  }catch(ForbiddenException | DataNotFoundException ex){
+				  nr = NeighbourGrpc.newBuilder().setErrorMessage(ex.getMessage()).build();
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }catch(Exception ex){
+				  nr = NeighbourGrpc.newBuilder().setErrorMessage(internalError).build();
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  responseObserver.onNext(nr);
+			  responseObserver.onCompleted();
+		  }
+
+		  @Override
+		  public void updateNeighbour(NeighbourGrpc request, StreamObserver<NewNeighbour> responseObserver) {
+			  NewNeighbour.Builder response = NewNeighbour.newBuilder();
+			  try{
+				  Neighbour neighbour = GrpcUtils.deriveNeighbour(request);
+				  neighbour.setId(request.getId());
+				  Neighbour newNeighbour = neighboursService.updateNeighbour(request.getIdGraph(), request.getIdNode(), neighbour);
+				  response.setSuccess(true).setNeighbour(GrpcUtils.obtainNeighbour(newNeighbour));
+			  }catch(ForbiddenException | DataNotFoundException | BadRequestException ex){
+				  response.setSuccess(false).setErrorMessage(ex.getMessage());
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }catch(Exception ex){
+				  response.setSuccess(false).setErrorMessage(ex.getMessage());
+				  logger.log(Level.WARNING, ex.getMessage());
+			  }
+			  responseObserver.onNext(response.build());
+			  responseObserver.onCompleted();
+		  }
+	  }
+}
diff --git a/verigraph/src/main/java/it/polito/grpc/test/GrpcServerTest.java b/verigraph/src/main/java/it/polito/grpc/test/GrpcServerTest.java
new file mode 100644
index 0000000..7344447
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/grpc/test/GrpcServerTest.java
@@ -0,0 +1,292 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.grpc.test;
+
+import static org.junit.Assert.assertEquals;
+
+import io.grpc.ManagedChannel;
+import io.grpc.inprocess.InProcessChannelBuilder;
+import io.grpc.inprocess.InProcessServerBuilder;
+import io.grpc.verigraph.ConfigurationGrpc;
+import io.grpc.verigraph.GetRequest;
+import io.grpc.verigraph.GraphGrpc;
+import io.grpc.verigraph.NeighbourGrpc;
+import io.grpc.verigraph.NewGraph;
+import io.grpc.verigraph.NewNeighbour;
+import io.grpc.verigraph.NewNode;
+import io.grpc.verigraph.NodeGrpc;
+import io.grpc.verigraph.NodeGrpc.FunctionalType;
+import io.grpc.verigraph.RequestID;
+import io.grpc.verigraph.Status;
+import io.grpc.verigraph.VerigraphGrpc;
+import it.polito.grpc.Client;
+import it.polito.grpc.Service;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.FixMethodOrder;
+import org.junit.runners.MethodSorters;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+
+/**
+ * Unit tests for {@link Service}.
+ * For testing basic gRPC unit test only.
+ * Not intended to provide a high code coverage or to test every major usecase.
+ */
+@RunWith(JUnit4.class)
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+public class GrpcServerTest {
+	private Service server;
+	private ManagedChannel inProcessChannel;
+
+	@Before
+	public void setUp() throws Exception {
+		String uniqueServerName = "in-process server for " + getClass();
+		// use directExecutor for both InProcessServerBuilder and InProcessChannelBuilder can reduce the
+		// usage timeouts and latches in test. But we still add timeout and latches where they would be
+		// needed if no directExecutor were used, just for demo purpose.
+		server = new Service(InProcessServerBuilder.forName(uniqueServerName).directExecutor(),0);
+		server.start();
+		inProcessChannel = InProcessChannelBuilder.forName(uniqueServerName).directExecutor().build();
+	}
+
+	@After
+	public void tearDown() throws Exception {
+		inProcessChannel.shutdownNow();
+		server.stop();
+	}
+
+	@Test
+	public void test1Graph() throws Exception {
+		RequestID request = RequestID.newBuilder().setIdGraph(1).build() ;//id not present
+		GraphGrpc ufoundedGraph = GraphGrpc.newBuilder()
+				.setErrorMessage("Graph with id 1 not found").build();
+		VerigraphGrpc.VerigraphBlockingStub stub = VerigraphGrpc.newBlockingStub(inProcessChannel);
+
+		// graph not found in the server
+		GraphGrpc graph = stub.getGraph(request);
+
+		assertEquals(ufoundedGraph, graph);
+
+		// getGraph in the server, but first add it
+		GraphGrpc addedGraph = GraphGrpc.newBuilder().build();
+		NewGraph response = stub.createGraph(addedGraph);
+		addedGraph = response.getGraph();
+		request = RequestID.newBuilder().setIdGraph(1).build() ;
+		graph = stub.getGraph(request);
+
+		assertEquals(addedGraph.getId(), graph.getId());
+
+		//updateGraph
+		GraphGrpc updatedGraph = GraphGrpc.newBuilder().setId(response.getGraph().getId()).build();
+		response = stub.updateGraph(updatedGraph);
+
+		assertEquals(response.getSuccess(),true);
+	}
+
+	@Test
+	public void test2Graphs() throws Exception {
+		// setup
+		GetRequest request = GetRequest.newBuilder().build();
+		GraphGrpc g1 = GraphGrpc.newBuilder().build();
+		GraphGrpc g2 = GraphGrpc.newBuilder().build();
+		GraphGrpc g3 = GraphGrpc.newBuilder().build();
+		GraphGrpc g4 = GraphGrpc.newBuilder().build();
+
+		VerigraphGrpc.VerigraphBlockingStub stub = VerigraphGrpc.newBlockingStub(inProcessChannel);
+
+		stub.createGraph(g1);
+		stub.createGraph(g2);
+		stub.createGraph(g3);
+		stub.createGraph(g4);
+		g1 = GraphGrpc.newBuilder(g1).setId(1).build();
+		g2 = GraphGrpc.newBuilder(g2).setId(2).build();
+		g3 = GraphGrpc.newBuilder(g3).setId(3).build();
+		g4 = GraphGrpc.newBuilder(g4).setId(4).build();
+		// run
+		Iterator<GraphGrpc> graphs = stub.getGraphs(request);
+
+		assertEquals(graphs.next(), g1);
+		assertEquals(graphs.next(), g2);
+		assertEquals(graphs.next(), g3);
+		assertEquals(graphs.next(), g4);
+
+		//deleteGraph
+		RequestID req = RequestID.newBuilder().setIdGraph(g1.getId()).build();
+		stub.deleteGraph(req);
+		// run
+		graphs = stub.getGraphs(request);
+
+		assertEquals(graphs.next(), g2);
+		assertEquals(graphs.next(), g3);
+		assertEquals(graphs.next(), g4);
+	}
+
+	@Test
+	public void test3Node() throws Exception {
+		RequestID request = RequestID.newBuilder().setIdGraph(2).setIdNode(1).build() ;//id not present
+		NodeGrpc ufoundedGraph = NodeGrpc.newBuilder()
+					.setErrorMessage("Node with id 1 not found in graph with id 2").build();
+		VerigraphGrpc.VerigraphBlockingStub stub = VerigraphGrpc.newBlockingStub(inProcessChannel);
+
+		// graph not found in the server
+		NodeGrpc node = stub.getNode(request);
+
+		assertEquals(ufoundedGraph, node);
+
+		// graph found in the server, but first add it
+		NodeGrpc addedNode = NodeGrpc.newBuilder().setName("client").setIdGraph(2)
+				.setFunctionalType(FunctionalType.endhost).build();
+		NewNode response = stub.createNode(addedNode);
+		addedNode = response.getNode();
+		request = RequestID.newBuilder().setIdGraph(2).setIdNode(1).build() ;
+		node = stub.getNode(request);
+
+		assertEquals(addedNode.getId(), node.getId());
+		assertEquals(addedNode.getName(),"client");
+
+		//updateNode
+		NodeGrpc updatedNode = NodeGrpc.newBuilder().setName("Nodo2").setIdGraph(2).setId(1)
+				.setFunctionalType(FunctionalType.endhost).build();
+		response = stub.updateNode(updatedNode);
+
+		assertEquals(response.getSuccess(),true);
+		assertEquals(response.getNode().getName(),"Nodo2");
+
+		//configureNode
+		Map<String,String> params = new HashMap<String,String>();
+		params.put("url", "www.facebook.com");
+		params.put("body", "word");
+		params.put("destination","server");
+		params.put("protocol", "HTTP_REQUEST");
+		ConfigurationGrpc configuration = Client.createConfigurationGrpc(params, null, null, null);
+		ConfigurationGrpc config = ConfigurationGrpc.newBuilder(configuration).setIdGraph(2)
+							.setIdNode(1).build();
+
+		Status status = stub.configureNode(config);
+
+		assertEquals(status.getSuccess(),true);
+	}
+
+	@Test
+	public void test4Nodes() throws Exception {
+		// setup
+		RequestID request = RequestID.newBuilder().setIdGraph(2).build();
+		NodeGrpc n1 = NodeGrpc.newBuilder(Client.createNodeGrpc("Node5", "endhost", null, null))
+				.setIdGraph(2).build();
+		NodeGrpc n2 =  NodeGrpc.newBuilder(Client.createNodeGrpc("Node3", "endhost", null, null))
+				.setIdGraph(2).build();
+		NodeGrpc n3 =  NodeGrpc.newBuilder(Client.createNodeGrpc("Node4", "endhost", null, null))
+				.setIdGraph(2).build();
+		NodeGrpc n4 =  NodeGrpc.newBuilder(Client.createNodeGrpc("client", "endhost", null, null))
+				.setIdGraph(2).build();
+
+		VerigraphGrpc.VerigraphBlockingStub stub = VerigraphGrpc.newBlockingStub(inProcessChannel);
+
+		stub.createNode(n1);
+		stub.createNode(n2);
+		stub.createNode(n3);
+		stub.createNode(n4);
+		n1 = NodeGrpc.newBuilder(n1).setId(2).setIdGraph(0).build();
+		n2 = NodeGrpc.newBuilder(n2).setId(3).setIdGraph(0).build();
+		n3 = NodeGrpc.newBuilder(n3).setId(4).setIdGraph(0).build();
+		n4 = NodeGrpc.newBuilder(n4).setId(5).setIdGraph(0).build();
+		// run
+		Iterator<NodeGrpc> nodes = stub.getNodes(request);
+
+		nodes.next();
+		assertEquals(nodes.next(), n1);
+		assertEquals(nodes.next(), n2);
+		assertEquals(nodes.next(), n3);
+		assertEquals(nodes.next(), n4);
+
+		//deleteNode
+		RequestID req = RequestID.newBuilder().setIdGraph(2).setIdNode(1).build();
+		stub.deleteNode(req);
+		// run
+		nodes = stub.getNodes(request);
+
+		assertEquals(nodes.next(), n1);
+		assertEquals(nodes.next(), n2);
+		assertEquals(nodes.next(), n3);
+		assertEquals(nodes.next(), n4);
+	}
+
+	@Test
+	public void test5Neighbours() throws Exception {
+		RequestID request = RequestID.newBuilder().setIdGraph(2).setIdNode(2).setIdNeighbour(1).build() ;//id not present
+		NeighbourGrpc ufoundedNeighbour = NeighbourGrpc.newBuilder()
+						.setErrorMessage("Neighbour with id 1 not found for node with id 2 in graph with id 2").build();;
+		VerigraphGrpc.VerigraphBlockingStub stub = VerigraphGrpc.newBlockingStub(inProcessChannel);
+
+		// Neighbour not found in the server
+		NeighbourGrpc neighbour = stub.getNeighbour(request);
+
+		assertEquals(ufoundedNeighbour, neighbour);
+
+		// getNeighbour, but first add it
+		NeighbourGrpc addedNeighbour = NeighbourGrpc.newBuilder().setIdGraph(2).setIdNode(2)
+										.setName("client").build();
+		NewNeighbour response = stub.createNeighbour(addedNeighbour);
+		addedNeighbour = response.getNeighbour();
+		request = RequestID.newBuilder().setIdGraph(2).setIdNode(2)
+						.setIdNeighbour(addedNeighbour.getId()).build();
+		neighbour = stub.getNeighbour(request);
+
+		assertEquals(addedNeighbour.getId(), neighbour.getId());
+
+		//updateNeighbour
+		NeighbourGrpc updatedNeighbour = Client.createNeighbourGrpc("Node4");
+		NeighbourGrpc nu = NeighbourGrpc.newBuilder(updatedNeighbour)
+				.setId(response.getNeighbour().getId()).setIdGraph(2).setIdNode(2).build();
+		response = stub.updateNeighbour(nu);
+
+		assertEquals(response.getSuccess(),true);
+		assertEquals(response.getNeighbour().getName(),"Node4");
+	}
+
+	@Test
+	public void test6Neighbours() throws Exception {
+		// setup
+		RequestID request = RequestID.newBuilder().setIdGraph(2).setIdNode(2).build();
+		NeighbourGrpc n1 = NeighbourGrpc.newBuilder().setIdGraph(2).setIdNode(2)
+							.setName("Node3").build();
+		NeighbourGrpc n2 = NeighbourGrpc.newBuilder().setIdGraph(2).setIdNode(2)
+							.setName("client").build();
+
+		VerigraphGrpc.VerigraphBlockingStub stub = VerigraphGrpc.newBlockingStub(inProcessChannel);
+
+		stub.createNeighbour(n1);
+		stub.createNeighbour(n2);
+		n1 = NeighbourGrpc.newBuilder(n1).setId(2).setIdGraph(0).setIdNode(0).build();
+		n2 = NeighbourGrpc.newBuilder(n2).setId(3).setIdGraph(0).setIdNode(0).build();
+		// run
+		Iterator<NeighbourGrpc> neighbours = stub.getNeighbours(request);
+
+		neighbours.next();
+		assertEquals(neighbours.next(), n1);
+		assertEquals(neighbours.next(), n2);
+
+		//deleteNeighbour
+		RequestID req = RequestID.newBuilder().setIdGraph(2).setIdNode(2).setIdNeighbour(1).build();
+		stub.deleteNeighbour(req);
+		// run
+		neighbours = stub.getNeighbours(request);
+
+		assertEquals(neighbours.next(), n1);
+		assertEquals(neighbours.next(), n2);
+	}
+}
diff --git a/verigraph/src/main/java/it/polito/grpc/test/GrpcTest.java b/verigraph/src/main/java/it/polito/grpc/test/GrpcTest.java
new file mode 100644
index 0000000..41f9cad
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/grpc/test/GrpcTest.java
@@ -0,0 +1,349 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.grpc.test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.fail;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.FixMethodOrder;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+import org.junit.runners.MethodSorters;
+
+import io.grpc.verigraph.ConfigurationGrpc;
+import io.grpc.verigraph.GraphGrpc;
+import io.grpc.verigraph.NeighbourGrpc;
+import io.grpc.verigraph.NewGraph;
+import io.grpc.verigraph.NewNeighbour;
+import io.grpc.verigraph.NewNode;
+import io.grpc.verigraph.NodeGrpc;
+import it.polito.grpc.Client;
+import it.polito.grpc.Service;
+
+@RunWith(JUnit4.class)
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+public class GrpcTest {
+	private Service server;
+	private Client client;
+
+	@Before
+	public void setUpBeforeClass() throws Exception {
+		client = new Client("localhost" , 50051);
+		server = new Service(50051);
+		server.start();
+	}
+
+	@After
+	public void tearDown() throws Exception {
+		server.stop();
+		client.shutdown();
+	}
+
+	// method for comparing two non-null strings
+	private void compareString(String rs, String ts, String meaning) {
+		assertNotNull("NULL "+meaning, ts);
+		assertEquals("Wrong "+meaning, rs, ts);
+	}
+
+	@Test
+	public final void test1Load() throws Exception{
+		String funcType1 = "vpnaccess";
+		String funcType2 = "vpnexit";
+
+		// load an existing graph with 2 nodes
+		Map<String,String> map = new HashMap<String,String>();
+		map.put("vpnexit", "Node2");
+		ConfigurationGrpc conf = Client.createConfigurationGrpc(map, null, null, null);
+		NodeGrpc node1 = Client.createNodeGrpc("Node1", funcType1, null, conf);
+		List<NeighbourGrpc> neighbours = new ArrayList<NeighbourGrpc>();
+		NeighbourGrpc nb = Client.createNeighbourGrpc("Node1");
+		neighbours.add(nb);
+		map.clear();
+		map.put("vpnaccess", "Node1");
+		conf = Client.createConfigurationGrpc(map, null, null, null);
+		NodeGrpc node2 = Client.createNodeGrpc("Node2", funcType2, neighbours, conf);
+		List<NodeGrpc> nodes = new ArrayList<NodeGrpc>();
+		nodes.add(node1);
+		nodes.add(node2);
+		GraphGrpc graph = Client.createGraphGrpc(nodes);
+		//createGraph
+		graph = client.createGraph(graph).getGraph();
+
+		//getGraph
+		GraphGrpc retreivedGraph = client.getGraph(graph.getId());
+
+		assertNotNull("NULL Graph ",retreivedGraph);
+		assertEquals(graph.getId(), retreivedGraph.getId());
+
+		// check the name of first node and the id
+		compareString(retreivedGraph.getNodeList().get(0).getName(), graph.getNodeList().get(0).getName(), "node name");
+		assertEquals(retreivedGraph.getNodeList().get(0).getId(), graph.getNodeList().get(0).getId());
+
+		// check the name of second node and the id
+		compareString(retreivedGraph.getNodeList().get(1).getName(), graph.getNodeList().get(1).getName(), "node name");
+		assertEquals(retreivedGraph.getNodeList().get(1).getId(), graph.getNodeList().get(1).getId());
+
+		//updateGraph
+		GraphGrpc updatedGraph = GraphGrpc.newBuilder().build();
+		NewGraph response = client.updateGraph(graph.getId(),updatedGraph);
+
+		assertEquals(response.getSuccess(),true);
+	}
+
+	@Test
+	public final void test2LoadWithError() throws Exception{
+		// try to load a graph with node without functionalType
+		NodeGrpc node = null;
+		try{
+			node = Client.createNodeGrpc("Node1", null, null, null);
+			fail( "createNodeGrpc didn't throw when I expected it to" );
+		}
+		catch(Exception ex){
+		}
+		List<NodeGrpc> nodes = new ArrayList<NodeGrpc>();
+		if(node != null)
+			nodes.add(node);
+
+		GraphGrpc graph = Client.createGraphGrpc(nodes);
+		graph = client.createGraph(graph).getGraph();
+
+		assertEquals(graph.getId(), 2);
+
+		//getGraphs
+		Iterator<GraphGrpc> graphs = client.getGraphs().iterator();
+
+		assertEquals(graphs.next().getId(), 1);
+		assertEquals(graphs.next(), graph);
+
+		//deleteGraph
+		boolean resp= client.deleteGraph(graph.getId());
+		assertEquals(resp, true);
+
+		List<GraphGrpc> listGraphs = client.getGraphs();
+
+		assertEquals(listGraphs.size(), 1);
+		assertEquals(listGraphs.get(0).getId(), 1);
+	}
+
+	@Test
+	public void test3Node() throws Exception {
+		NodeGrpc ufoundedGraph = NodeGrpc.newBuilder()
+				.setErrorMessage("Node with id 1 not found in graph with id 1").build();
+
+		// graph not found in the server
+		NodeGrpc node = client.getNode(1, 1);//id not present
+
+		assertEquals(ufoundedGraph, node);
+
+		// graph found in the server, but first add it
+		NodeGrpc addedNode = Client.createNodeGrpc("Node4", "firewall", null, null);
+		NewNode response = client.createNode(addedNode, 1);
+		addedNode = response.getNode();
+		node = client.getNode(1, 1);
+
+		assertEquals(addedNode.getId(), node.getId());
+
+		//updateNode
+		NodeGrpc updatedNode = Client.createNodeGrpc("Node9", "endhost", null, null);
+		response = client.updateNode(1, addedNode.getId(), updatedNode);
+
+		assertEquals(response.getSuccess(),true);
+
+		//configureNode
+		//this configuration is valid only on endhost!
+		Map<String,String> params = new HashMap<String,String>();
+		params.put("url", "www.facebook.com");
+		params.put("body", "word");
+		params.put("destination","server");
+		params.put("protocol", "HTTP_REQUEST");
+		ConfigurationGrpc configuration = Client.createConfigurationGrpc(params, null, null, null);
+
+		boolean status = client.configureNode(1, 1, configuration);
+
+		assertEquals(status,true);
+	}
+
+	@Test
+	public void test4Nodes() throws Exception {
+		// setup
+		GraphGrpc graph = Client.createGraphGrpc(null);
+		//createGraph
+		graph = client.createGraph(graph).getGraph();
+
+		List<NeighbourGrpc> neighbours = new ArrayList<NeighbourGrpc>();
+		NeighbourGrpc nb = Client.createNeighbourGrpc("Node6");
+		neighbours.add(nb);
+		NodeGrpc n1 = Client.createNodeGrpc("Node6", "mailserver", null, null);
+		NodeGrpc n2 = Client.createNodeGrpc("Node9", "endhost", neighbours, null);
+		Map<String,String> map = new HashMap<String,String>();
+		map.put("mailserver", "Node6");
+		ConfigurationGrpc conf = Client.createConfigurationGrpc(map, null, null, null);
+		NodeGrpc n3 = Client.createNodeGrpc("Node10", "mailclient", null, conf);
+		NodeGrpc n4 = Client.createNodeGrpc("Node11", "nat", null, null);
+
+		NewNode nw1 = client.createNode(n1, graph.getId());
+		NewNode nw2 = client.createNode(n2, graph.getId());
+		NewNode nw3 = client.createNode(n3, graph.getId());
+		NewNode nw4 = client.createNode(n4, graph.getId());
+		assertEquals(nw1.getSuccess(),true);
+		assertEquals(nw2.getSuccess(),true);
+		assertEquals(nw3.getSuccess(),true);
+		assertEquals(nw4.getSuccess(),true);
+		n1 = NodeGrpc.newBuilder(n1).setId(nw1.getNode().getId()).build();
+		n2 = NodeGrpc.newBuilder(n2).setId(nw2.getNode().getId()).build();
+		n3 = NodeGrpc.newBuilder(n3).setId(nw3.getNode().getId()).build();
+		n4 = NodeGrpc.newBuilder(n4).setId(nw4.getNode().getId()).build();
+
+		// getNodes
+		Iterator<NodeGrpc> nodes = client.getNodes(graph.getId()).iterator();
+
+		assertEquals(nodes.next().getName(), n1.getName());
+		assertEquals(nodes.next().getName(), n2.getName());
+		assertEquals(nodes.next().getName(), n3.getName());
+		assertEquals(nodes.next().getName(), n4.getName());
+
+		//deleteNode
+		client.deleteNode(graph.getId(), 1);
+		// run
+		nodes = client.getNodes(graph.getId()).iterator();
+
+		assertEquals(nodes.next().getName(), n2.getName());
+		assertEquals(nodes.next().getName(), n3.getName());
+		assertEquals(nodes.next().getName(), n4.getName());
+	}
+
+	@Test
+	public void test5Neighbours() throws Exception {
+		NeighbourGrpc ufoundedNeighbour = NeighbourGrpc.newBuilder()
+				.setErrorMessage("Neighbour with id 1 not found for node with id 1 in graph with id 1").build();;
+
+		// Neighbour not found in the server
+		NeighbourGrpc neighbour = client.getNeighbour(1, 1, 1);//id not present
+
+		assertEquals(ufoundedNeighbour, neighbour);
+
+		GraphGrpc graph = Client.createGraphGrpc(null);
+		graph = client.createGraph(graph).getGraph();
+
+		List<NeighbourGrpc> neighbours = new ArrayList<NeighbourGrpc>();
+		NeighbourGrpc nb = Client.createNeighbourGrpc("Node1");
+		neighbours.add(nb);
+		NodeGrpc n1 = Client.createNodeGrpc("Node1", "antispam", null, null);
+		NodeGrpc n2 = Client.createNodeGrpc("Node2", "endhost", neighbours, null);
+		NodeGrpc n3 = Client.createNodeGrpc("Node3", "endhost", null, null);
+		NodeGrpc n4 = Client.createNodeGrpc("Node4", "endpoint", null, null);
+		NodeGrpc n5 = Client.createNodeGrpc("Node5", "webserver", null, null);
+		Map<String,String> map = new HashMap<String,String>();
+		map.put("webserver", "Node5");
+		ConfigurationGrpc conf = Client.createConfigurationGrpc(map, null, null, null);
+		NodeGrpc n6 = Client.createNodeGrpc("Node6", "webclient", null, conf);
+		NodeGrpc n7 = Client.createNodeGrpc("Node7", "cache", null, null);
+		NodeGrpc n8 = Client.createNodeGrpc("Node8", "firewall", null, null);
+		NodeGrpc n9 = Client.createNodeGrpc("Node9", "fieldmodifier", null, null);
+		NodeGrpc n10 = Client.createNodeGrpc("Node10", "dpi", null, null);
+		NewNode nw1 = client.createNode(n1, graph.getId());
+		NewNode nw2 = client.createNode(n2, graph.getId());
+		NewNode nw3 = client.createNode(n3, graph.getId());
+		NewNode nw4 = client.createNode(n4, graph.getId());
+		NewNode nw5 = client.createNode(n5, graph.getId());
+		NewNode nw6 = client.createNode(n6, graph.getId());
+		NewNode nw7 = client.createNode(n7, graph.getId());
+		NewNode nw8 = client.createNode(n8, graph.getId());
+		NewNode nw9 = client.createNode(n9, graph.getId());
+		NewNode nw10 = client.createNode(n10, graph.getId());
+		assertEquals(nw1.getSuccess(),true);
+		assertEquals(nw2.getSuccess(),true);
+		assertEquals(nw3.getSuccess(),true);
+		assertEquals(nw4.getSuccess(),true);
+		assertEquals(nw5.getSuccess(),true);
+		assertEquals(nw6.getSuccess(),true);
+		assertEquals(nw7.getSuccess(),true);
+		assertEquals(nw8.getSuccess(),true);
+		assertEquals(nw9.getSuccess(),true);
+		assertEquals(nw10.getSuccess(),true);
+
+		// getNeighbour, but first add it
+		NeighbourGrpc addedNeighbour = Client.createNeighbourGrpc("Node9");
+		NewNeighbour response = client.createNeighbour(addedNeighbour, graph.getId(), nw1.getNode().getId());
+		addedNeighbour = response.getNeighbour();
+		neighbour = client.getNeighbour(graph.getId(), nw1.getNode().getId(), addedNeighbour.getId());
+
+		assertEquals(addedNeighbour.getId(), neighbour.getId());
+
+		//updateNeighbour
+		NeighbourGrpc updatedNeighbour = Client.createNeighbourGrpc("Node10");
+
+		response = client.updateNeighbour(graph.getId(), 1, addedNeighbour.getId(),updatedNeighbour);
+
+		assertEquals(response.getSuccess(),true);
+		assertEquals(response.getNeighbour().getName(),"Node10");
+	}
+
+	@Test
+	public void test6Neighbours() throws Exception {
+		// setup
+		GraphGrpc graph = Client.createGraphGrpc(null);
+		//createGraph
+		graph = client.createGraph(graph).getGraph();
+
+		NodeGrpc n1 = Client.createNodeGrpc("Node1", "antispam", null, null);
+		NodeGrpc n2 = Client.createNodeGrpc("Node2", "endhost", null, null);
+		NodeGrpc n3 = Client.createNodeGrpc("Node3", "endhost", null, null);
+		NodeGrpc n4 = Client.createNodeGrpc("Node4", "endpoint", null, null);
+		NewNode nw1 = client.createNode(n1, graph.getId());
+		NewNode nw2 = client.createNode(n2, graph.getId());
+		NewNode nw3 = client.createNode(n3, graph.getId());
+		NewNode nw4 = client.createNode(n4, graph.getId());
+		assertEquals(nw1.getSuccess(),true);
+		assertEquals(nw2.getSuccess(),true);
+		assertEquals(nw3.getSuccess(),true);
+		assertEquals(nw4.getSuccess(),true);
+
+		//createNeighbour
+		NeighbourGrpc nn1 = Client.createNeighbourGrpc("Node2");
+		NewNeighbour addedNeighbour1 = client.createNeighbour(nn1, graph.getId(), nw1.getNode().getId());
+		assertEquals(addedNeighbour1.getSuccess(),true);
+		NeighbourGrpc nn2 = Client.createNeighbourGrpc("Node3");
+		NewNeighbour addedNeighbour2 = client.createNeighbour(nn2, graph.getId(), nw1.getNode().getId());
+		assertEquals(addedNeighbour2.getSuccess(),true);
+		NeighbourGrpc nn3 = Client.createNeighbourGrpc("Node4");
+		NewNeighbour addedNeighbour3 = client.createNeighbour(nn3, graph.getId(), nw1.getNode().getId());
+		assertEquals(addedNeighbour3.getSuccess(),true);
+
+		nn1 = NeighbourGrpc.newBuilder(nn1).setId(1).build();
+		nn2 = NeighbourGrpc.newBuilder(nn2).setId(2).build();
+		nn3 = NeighbourGrpc.newBuilder(nn3).setId(3).build();
+		// run
+		Iterator<NeighbourGrpc> neighbours = client.getNeighbours(graph.getId(), nw1.getNode().getId()).iterator();
+
+		assertEquals(neighbours.next(), nn1);
+		assertEquals(neighbours.next(), nn2);
+		assertEquals(neighbours.next(), nn3);
+
+		//deleteNeighbour
+		boolean succ = client.deleteNeighbour(graph.getId(), nw1.getNode().getId(), 1);
+		assertEquals(succ, true);
+		// run
+		neighbours = client.getNeighbours(graph.getId(), nw1.getNode().getId()).iterator();
+
+		assertEquals(neighbours.next(), nn2);
+		assertEquals(neighbours.next(), nn3);
+	}
+}
diff --git a/verigraph/src/main/java/it/polito/grpc/test/MultiThreadTest.java b/verigraph/src/main/java/it/polito/grpc/test/MultiThreadTest.java
new file mode 100644
index 0000000..5b76bea
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/grpc/test/MultiThreadTest.java
@@ -0,0 +1,220 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.grpc.test;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Random;
+import java.util.concurrent.Callable;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.FixMethodOrder;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+import org.junit.runners.MethodSorters;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.databind.JsonMappingException;
+
+import io.grpc.verigraph.GraphGrpc;
+import io.grpc.verigraph.NewGraph;
+import io.grpc.verigraph.NodeGrpc;
+import it.polito.escape.verify.client.VerifyClientException;
+import it.polito.grpc.Client;
+import it.polito.grpc.Service;
+
+/**
+ * Unit tests for gRPC project.
+ * For testing concurrency on server side.
+ */
+@RunWith(JUnit4.class)
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+public class MultiThreadTest {
+	private Service server;
+	private Client client;
+
+	@Before
+	public void setUp() throws Exception {
+		client = new Client("localhost" , 50051);
+		server = new Service(50051);
+
+		server.start();
+	}
+
+	@After
+	public void tearDown() throws Exception {
+		server.stop();
+		client.shutdown();
+	}
+
+	private void testUpdateGraphStatus(final int threadCount) throws InterruptedException, ExecutionException, JsonParseException, JsonMappingException, IOException, VerifyClientException {
+		GraphGrpc retrieveGraphResponse =client.getGraph(1);
+
+		UpdateGraph task = new UpdateGraph(client, 1, retrieveGraphResponse);
+
+		List<MultiThreadTest.UpdateGraph> tasks = Collections.nCopies(threadCount, task);
+		ExecutorService executorService = Executors.newFixedThreadPool(threadCount);
+
+		List<Future<NewGraph>> futures = executorService.invokeAll(tasks);
+		List<Boolean> resultList = new ArrayList<Boolean>(futures.size());
+
+		// Check for exceptions
+		for (Future<NewGraph> future : futures) {
+			// Throws an exception if an exception was thrown by the task.
+			resultList.add(future.get().getSuccess());
+		}
+		// Validate the dimensions
+		Assert.assertEquals(threadCount, futures.size());
+
+		List<Boolean> expectedList = new ArrayList<Boolean>(threadCount);
+		for (int i = 1; i <= threadCount; i++) {
+			expectedList.add(true);
+		}
+		// Validate expected results
+		Assert.assertEquals(expectedList, resultList);
+	}
+
+	private void testUpdateGraph(final int threadCount) throws Exception {
+		GraphGrpc retrieveGraph = client.getGraph(2L);
+		NodeGrpc nodeToEdit = Client.createNodeGrpc("client",
+								"endpoint",
+								null,
+								Client.createConfigurationGrpc(null, null, "client", ""));
+
+		GraphGrpc graphToUpdate = GraphGrpc.newBuilder(retrieveGraph).addNode(nodeToEdit).build();
+
+		String graphAsString = graphToUpdate.toString();
+
+		UpdateGraph task = new UpdateGraph(client, 2, graphToUpdate);
+
+		List<MultiThreadTest.UpdateGraph> tasks = Collections.nCopies(threadCount, task);
+		ExecutorService executorService = Executors.newFixedThreadPool(threadCount);
+
+		List<Future<NewGraph>> futures = executorService.invokeAll(tasks);
+		List<String> resultList = new ArrayList<String>(futures.size());
+
+		// Check for exceptions
+		for (Future<NewGraph> future : futures) {
+			// Throws an exception if an exception was thrown by the task.
+			GraphGrpc graphReceived = future.get().getGraph();
+			NodeGrpc node = NodeGrpc.newBuilder(graphReceived.getNode(0)).setId(0).build();
+			GraphGrpc graph = GraphGrpc.newBuilder(graphReceived).setNode(0, node).build();
+			resultList.add(graph.toString());
+		}
+		// Validate dimensions
+		Assert.assertEquals(threadCount, futures.size());
+
+		List<String> expectedList = new ArrayList<String>(threadCount);
+		for (int i = 1; i <= threadCount; i++) {
+			expectedList.add(graphAsString);
+		}
+		// Validate expected results
+		Assert.assertEquals(expectedList, resultList);
+	}
+
+	private void testCreateGraphStatus(final int threadCount) throws InterruptedException, ExecutionException, JsonParseException, JsonMappingException, IOException {
+
+		GraphGrpc graph = GraphGrpc.newBuilder().build();
+
+		CreateGraph task = new CreateGraph(client, graph);
+
+		List<MultiThreadTest.CreateGraph> tasks = Collections.nCopies(threadCount, task);
+		ExecutorService executorService = Executors.newFixedThreadPool(threadCount);
+
+		List<Future<Boolean>> futures = executorService.invokeAll(tasks);
+		List<Boolean> resultList = new ArrayList<Boolean>(futures.size());
+
+		// Check for exceptions
+		for (Future<Boolean> future : futures) {
+			// Throws an exception if an exception was thrown by the task.
+			resultList.add(future.get());
+		}
+		// Validate the IDs
+		Assert.assertEquals(threadCount, futures.size());
+
+		List<Boolean> expectedList = new ArrayList<Boolean>(threadCount);
+		for (int i = 1; i <= threadCount; i++) {
+			expectedList.add(true);
+		}
+		// Validate expected results
+		Assert.assertEquals(expectedList, resultList);
+	}
+
+	private int randInt(int min, int max){
+		Random rand = new Random();
+	    int randomNum = rand.nextInt((max - min) + 1) + min;
+	    return randomNum;
+	}
+
+	@Test
+	public void updateGraphStatusCheck() throws InterruptedException, ExecutionException, JsonParseException, JsonMappingException, IOException, VerifyClientException {
+		testUpdateGraphStatus(64);
+	}
+
+	@Test
+	public void updateGraphResponseCheck() throws Exception {
+		testUpdateGraph(16);
+	}
+
+	@Test
+	public void createGraphStatusCheck() throws JsonParseException, JsonMappingException, InterruptedException, ExecutionException, IOException {
+		testCreateGraphStatus(8);
+	}
+
+	class UpdateGraph implements Callable<NewGraph> {
+
+		private Client	verifyClient;
+
+		private int				graphId;
+
+		private GraphGrpc			graph;
+
+		public UpdateGraph(Client verifyClient, int graphId, GraphGrpc graph) {
+			this.graphId = graphId;
+			this.graph = graph;
+			this.verifyClient = verifyClient;
+		}
+
+		@Override
+		public NewGraph call() throws Exception {
+			Thread.sleep(randInt(0,2000));
+			return this.verifyClient.updateGraph(this.graphId, this.graph);
+		}
+	}
+
+	class CreateGraph implements Callable<Boolean> {
+
+		private Client	verifyClient;
+
+		private GraphGrpc		graph;
+
+		public CreateGraph(Client verifyClient, GraphGrpc graph) {
+			this.graph = graph;
+			this.verifyClient = verifyClient;
+		}
+
+		@Override
+		public Boolean call() throws Exception {
+			Thread.sleep(randInt(0,2000));
+			return this.verifyClient.createGraph(this.graph).getSuccess();
+		}
+
+	}
+
+}
diff --git a/verigraph/src/main/java/it/polito/grpc/test/ReachabilityTest.java b/verigraph/src/main/java/it/polito/grpc/test/ReachabilityTest.java
new file mode 100644
index 0000000..a120aff
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/grpc/test/ReachabilityTest.java
@@ -0,0 +1,252 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.grpc.test;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.FixMethodOrder;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+import org.junit.runners.MethodSorters;
+
+import static org.junit.Assert.assertEquals;
+
+import java.io.BufferedReader;
+import java.io.FilenameFilter;
+import java.io.InputStreamReader;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.github.fge.jsonschema.core.exceptions.ProcessingException;
+import com.github.fge.jsonschema.main.JsonSchema;
+
+import io.grpc.verigraph.GraphGrpc;
+import io.grpc.verigraph.NewGraph;
+import io.grpc.verigraph.Policy;
+import io.grpc.verigraph.VerificationGrpc;
+import it.polito.escape.verify.client.VerifyClientException;
+import it.polito.escape.verify.service.ValidationUtils;
+import it.polito.escape.verify.test.TestCase;
+import it.polito.escape.verify.test.TestExecutionException;
+import it.polito.grpc.Client;
+import it.polito.grpc.GrpcUtils;
+import it.polito.grpc.Service;
+
+@RunWith(JUnit4.class)
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+public class ReachabilityTest {
+	private File			schema;
+	private List<File>		testFiles	= new ArrayList<File>();
+	private List<TestCase>	testCases	= new ArrayList<TestCase>();
+	private Client	client;
+	private Service server;
+
+	@Before
+	public void setUpBeforeClass() throws Exception {
+		client = new Client("localhost" , 50051);
+		server = new Service(50051);
+		server.start();
+
+		String folderName = System.getProperty("user.dir") + "/tester/testcases";
+		File folder = new File(folderName);
+		if (!folder.exists()) {
+			BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
+		    String s;
+		    do{
+		    	System.out.println("Please enter the testcases folder path: ");
+		    	s = in.readLine();
+		    	if (isValidpath(s)){
+		    		folder = new File(s);
+		    		break;
+		    	}
+		    }while (s != null && s.length() != 0);
+		    if(s == null)
+		    	System.exit(0);
+		}
+		String schemaName = System.getProperty("user.dir") + "/tester/testcase_schema.json";
+		File schema = new File(schemaName);
+		if (!schema.exists()) {
+			BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
+		    String s;
+		    do{
+		    	System.out.println("Please enter the full path of 'testcase_schema.json': ");
+		    	s = in.readLine();
+		    	if (isValidpath(s)){
+		    		folder = new File(s);
+		    		break;
+		    	}
+		    }while (s != null && s.length() != 0);
+		    if(s == null)
+		    	System.exit(0);
+		}
+
+		this.schema = schema;
+		this.testFiles = getTests(folder);
+		this.testCases = getTestCases(this.testFiles);
+	}
+
+	@After
+	public void tearDown() throws Exception {
+		server.stop();
+		client.shutdown();
+	}
+
+	@Test
+	public final void wrongReachability() {
+		System.out.println("DEBUG: starting testWrongReachability");
+
+		VerificationGrpc nullVer = VerificationGrpc.newBuilder()
+							.setErrorMessage("Graph with id 52 not found").build();
+		//verification on uncreated graph
+		Policy policyToVerify = Client.createPolicy("Node1", "Node4", "reachability", null, 52);
+		VerificationGrpc ver = client.verify(policyToVerify);
+		assertEquals(ver, nullVer);
+
+		//verification on uncreated nodes
+		nullVer = VerificationGrpc.newBuilder()
+				.setErrorMessage("The \'source\' parameter \'Node5\' is not valid, please insert the name of an existing node").build();
+		policyToVerify = Client.createPolicy("Node5", "Node4", "reachability", null, 1);
+		ver = client.verify(policyToVerify);
+		assertEquals(ver, nullVer);
+
+		//verification on uncreated nodes
+		nullVer = VerificationGrpc.newBuilder()
+				.setErrorMessage("The \'source\' parameter \'Node1\' is not valid, please insert the name of an existing node").build();
+
+		policyToVerify = Client.createPolicy("Node1", "Node10", "reachability", null, 1);
+		ver = client.verify(policyToVerify);
+		assertEquals(ver, nullVer);
+
+	}
+
+	public List<File> getTests(File folder) {
+		List<File> filesList = new ArrayList<File>();
+
+		System.out.println("Test folder set to '" + folder.getAbsolutePath() + "'");
+
+		File[] files = folder.listFiles(new FilenameFilter() {
+
+			@Override
+			public boolean accept(File dir, String name) {
+				return name.endsWith(".json");
+			}
+		});
+
+		for (File f : files) {
+			filesList.add(f);
+			System.out.println("File '" + f.getName() + "' added to test files");
+		}
+
+		return filesList;
+	}
+
+	public List<TestCase> getTestCases(List<File> files)	throws JsonParseException, JsonMappingException, IOException,
+															Exception {
+		List<TestCase> testCases = new ArrayList<TestCase>();
+
+		for (File file : files) {
+			validateTestFile(file);
+			try {
+				TestCase tc = new ObjectMapper().readValue(file, TestCase.class);
+				testCases.add(tc);
+			}
+			catch (Exception e) {
+				throw e;
+			}
+		}
+
+		return testCases;
+	}
+
+	@Test
+	public void runTestCases() throws VerifyClientException, TestExecutionException {
+		int counter = 0;
+		for (TestCase tc : this.testCases) {
+			String result = runTestCase(tc);
+			if (!result.equals(tc.getResult()))
+				throw new TestExecutionException("Error running test given in file '"	+ this.testFiles.get(counter).getName()
+									+ "'. Test returned '" + result + "' instead of '" + tc.getResult() + "'.");
+			else
+				System.out.println("Test given in file '"	+ this.testFiles.get(counter).getName() + "' returned '"
+									+ result + "' as expected");
+			counter++;
+
+		}
+		System.out.println("All tests PASSED");
+	}
+
+	private String runTestCase(TestCase tc) throws VerifyClientException, TestExecutionException{
+		GraphGrpc graph = GrpcUtils.obtainGraph(tc.getGraph());
+
+		NewGraph newGraph = this.client.createGraph(graph);
+		if(newGraph.getSuccess() == false)
+			throw new VerifyClientException("gRPC request failed");
+		GraphGrpc createdGraph = newGraph.getGraph();
+
+		GraphGrpc addedgraph = client.getGraph(createdGraph.getId());
+		System.out.println(addedgraph);
+
+		final Map<String, String> map = GrpcUtils.getParamGivenString(tc.getPolicyUrlParameters());
+
+		Policy policy = Client.createPolicy(map.get("source"),
+											map.get("destination"),
+											map.get("type"),
+											map.get("middlebox"),
+											createdGraph.getId());
+		VerificationGrpc verification = this.client.verify(policy);
+		return verification.getResult();
+	}
+
+	public void validateTestFile(File testFile) throws Exception {
+		JsonSchema schemaNode = null;
+		try {
+			schemaNode = ValidationUtils.getSchemaNode(schema);
+		}
+		catch (IOException e) {
+			throw new Exception("Unable to load '" + schema.getAbsolutePath() + "' schema file");
+		}
+		catch (ProcessingException e) {
+			throw new Exception("Unable to resolve '" + schema.getAbsolutePath() + "' schema file as a schema node");
+		}
+
+		JsonNode jsonNode;
+		try {
+			jsonNode = ValidationUtils.getJsonNode(testFile);
+		}
+		catch (IOException e) {
+			throw new Exception("Unable to load '" + testFile.getAbsolutePath() + "' as a json node");
+		}
+
+		try {
+			ValidationUtils.validateJson(schemaNode, jsonNode);
+		}
+		catch (ProcessingException e) {
+			throw new Exception("There were errors in the validation of file '"	+ testFile.getAbsolutePath()
+								+ "' against the json schema '" + schema.getAbsolutePath() + "': " + e.getMessage());
+
+		}
+	}
+
+	private static boolean isValidpath(String s) {
+		if (s==null)
+			return false;
+		File file = new File(s);
+		return file.exists();
+	}
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/ActionEnumType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/ActionEnumType.java
new file mode 100644
index 0000000..e7504b5
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/ActionEnumType.java
@@ -0,0 +1,59 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import javax.xml.bind.annotation.XmlEnum;
+import javax.xml.bind.annotation.XmlEnumValue;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for actionEnumType.
+ *
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <p>
+ * <pre>
+ * &lt;simpleType name="actionEnumType">
+ *   &lt;restriction base="{http://www.w3.org/2001/XMLSchema}string">
+ *     &lt;enumeration value="discard"/>
+ *     &lt;enumeration value="output"/>
+ *   &lt;/restriction>
+ * &lt;/simpleType>
+ * </pre>
+ *
+ */
+@XmlType(name = "actionEnumType")
+@XmlEnum
+public enum ActionEnumType {
+
+    @XmlEnumValue("discard")
+    DISCARD("discard"),
+    @XmlEnumValue("output")
+    OUTPUT("output");
+    private final String value;
+
+    ActionEnumType(String v) {
+        value = v;
+    }
+
+    public String value() {
+        return value;
+    }
+
+    public static ActionEnumType fromValue(String v) {
+        for (ActionEnumType c: ActionEnumType.values()) {
+            if (c.value.equals(v)) {
+                return c;
+            }
+        }
+        throw new IllegalArgumentException(v);
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/ActionType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/ActionType.java
new file mode 100644
index 0000000..db86975
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/ActionType.java
@@ -0,0 +1,81 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlAttribute;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for actionType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="actionType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;attribute name="type" use="required" type="{http://www.example.org/nffg/}actionEnumType" />
+ *       &lt;attribute name="port" type="{http://www.w3.org/2001/XMLSchema}string" />
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "actionType")
+public class ActionType {
+
+    @XmlAttribute(name = "type", required = true)
+    protected ActionEnumType type;
+    @XmlAttribute(name = "port")
+    protected String port;
+
+    /**
+     * Gets the value of the type property.
+     * @return
+     *     possible object is
+     *     {@link ActionEnumType }
+     */
+    public ActionEnumType getType() {
+        return type;
+    }
+
+    /**
+     * Sets the value of the type property.
+     * @param value
+     *     allowed object is
+     *     {@link ActionEnumType }
+     */
+    public void setType(ActionEnumType value) {
+        this.type = value;
+    }
+
+    /**
+     * Gets the value of the port property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getPort() {
+        return port;
+    }
+
+    /**
+     * Sets the value of the port property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setPort(String value) {
+        this.port = value;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/ActionsType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/ActionsType.java
new file mode 100644
index 0000000..5b81ae7
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/ActionsType.java
@@ -0,0 +1,67 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import java.util.ArrayList;
+import java.util.List;
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for actionsType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="actionsType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="action" type="{http://www.example.org/nffg/}actionType" maxOccurs="unbounded"/>
+ *       &lt;/sequence>
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "actionsType", propOrder = {
+    "action"
+})
+public class ActionsType {
+
+    @XmlElement(required = true)
+    protected List<ActionType> action;
+
+    /**
+     * Gets the value of the action property.
+     * <p>
+     * This accessor method returns a reference to the live list,
+     * not a snapshot. Therefore any modification you make to the
+     * returned list will be present inside the JAXB object.
+     * This is why there is not a <CODE>set</CODE> method for the action property.
+     * <p>
+     * For example, to add a new item, do as follows:
+     * <pre>
+     *    getAction().add(newItem);
+     * </pre>
+     * <p>
+     * Objects of the following type(s) are allowed in the list
+     * {@link ActionType }
+     */
+    public List<ActionType> getAction() {
+        if (action == null) {
+            action = new ArrayList<ActionType>();
+        }
+        return this.action;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/CiType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/CiType.java
new file mode 100644
index 0000000..9a82728
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/CiType.java
@@ -0,0 +1,206 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import java.util.ArrayList;
+import java.util.List;
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlAttribute;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for ciType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="ciType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="attributes">
+ *           &lt;complexType>
+ *             &lt;complexContent>
+ *               &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *                 &lt;sequence>
+ *                   &lt;element name="attribute" maxOccurs="unbounded" minOccurs="0">
+ *                     &lt;complexType>
+ *                       &lt;complexContent>
+ *                         &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *                           &lt;attribute name="value" use="required" type="{http://www.w3.org/2001/XMLSchema}string" />
+ *                         &lt;/restriction>
+ *                       &lt;/complexContent>
+ *                     &lt;/complexType>
+ *                   &lt;/element>
+ *                 &lt;/sequence>
+ *               &lt;/restriction>
+ *             &lt;/complexContent>
+ *           &lt;/complexType>
+ *         &lt;/element>
+ *       &lt;/sequence>
+ *       &lt;attribute name="id" use="required" type="{http://www.example.org/nffg/}ciIdType" />
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "ciType", propOrder = {
+    "attributes"
+})
+public class CiType {
+
+    @XmlElement(required = true)
+    protected CiType.Attributes attributes;
+    @XmlAttribute(name = "id", required = true)
+    protected String id;
+
+    /**
+     * Gets the value of the attributes property.
+     * @return
+     *     possible object is
+     *     {@link CiType.Attributes }
+     */
+    public CiType.Attributes getAttributes() {
+        return attributes;
+    }
+
+    /**
+     * Sets the value of the attributes property.
+     * @param value
+     *     allowed object is
+     *     {@link CiType.Attributes }
+     */
+    public void setAttributes(CiType.Attributes value) {
+        this.attributes = value;
+    }
+
+    /**
+     * Gets the value of the id property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getId() {
+        return id;
+    }
+
+    /**
+     * Sets the value of the id property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setId(String value) {
+        this.id = value;
+    }
+
+
+    /**
+     * <p>Java class for anonymous complex type.
+     * <p>The following schema fragment specifies the expected content contained within this class.
+     * <pre>
+     * &lt;complexType>
+     *   &lt;complexContent>
+     *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+     *       &lt;sequence>
+     *         &lt;element name="attribute" maxOccurs="unbounded" minOccurs="0">
+     *           &lt;complexType>
+     *             &lt;complexContent>
+     *               &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+     *                 &lt;attribute name="value" use="required" type="{http://www.w3.org/2001/XMLSchema}string" />
+     *               &lt;/restriction>
+     *             &lt;/complexContent>
+     *           &lt;/complexType>
+     *         &lt;/element>
+     *       &lt;/sequence>
+     *     &lt;/restriction>
+     *   &lt;/complexContent>
+     * &lt;/complexType>
+     * </pre>
+     */
+    @XmlAccessorType(XmlAccessType.FIELD)
+    @XmlType(name = "", propOrder = {
+        "attribute"
+    })
+    public static class Attributes {
+
+        protected List<CiType.Attributes.Attribute> attribute;
+
+        /**
+         * Gets the value of the attribute property.
+         * <p>
+         * This accessor method returns a reference to the live list,
+         * not a snapshot. Therefore any modification you make to the
+         * returned list will be present inside the JAXB object.
+         * This is why there is not a <CODE>set</CODE> method for the attribute property.
+         * <p>
+         * For example, to add a new item, do as follows:
+         * <pre>
+         *    getAttribute().add(newItem);
+         * </pre>
+         * <p>
+         * Objects of the following type(s) are allowed in the list
+         * {@link CiType.Attributes.Attribute }
+         */
+        public List<CiType.Attributes.Attribute> getAttribute() {
+            if (attribute == null) {
+                attribute = new ArrayList<CiType.Attributes.Attribute>();
+            }
+            return this.attribute;
+        }
+
+
+        /**
+         * <p>Java class for anonymous complex type.
+         * <p>The following schema fragment specifies the expected content contained within this class.
+         * <pre>
+         * &lt;complexType>
+         *   &lt;complexContent>
+         *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+         *       &lt;attribute name="value" use="required" type="{http://www.w3.org/2001/XMLSchema}string" />
+         *     &lt;/restriction>
+         *   &lt;/complexContent>
+         * &lt;/complexType>
+         * </pre>
+         */
+        @XmlAccessorType(XmlAccessType.FIELD)
+        @XmlType(name = "")
+        public static class Attribute {
+
+            @XmlAttribute(name = "value", required = true)
+            protected String value;
+
+            /**
+             * Gets the value of the value property.
+             * @return
+             *     possible object is
+             *     {@link String }
+             */
+            public String getValue() {
+                return value;
+            }
+
+            /**
+             * Sets the value of the value property.
+             * @param value
+             *     allowed object is
+             *     {@link String }
+             */
+            public void setValue(String value) {
+                this.value = value;
+            }
+
+        }
+
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/CpType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/CpType.java
new file mode 100644
index 0000000..4a67b79
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/CpType.java
@@ -0,0 +1,86 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlAttribute;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for cpType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="cpType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="port" type="{http://www.example.org/nffg/}portType"/>
+ *       &lt;/sequence>
+ *       &lt;attribute name="id" use="required" type="{http://www.example.org/nffg/}cpIdType" />
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "cpType", propOrder = {
+    "port"
+})
+public class CpType {
+
+    @XmlElement(required = true)
+    protected PortType port;
+    @XmlAttribute(name = "id", required = true)
+    protected String id;
+
+    /**
+     * Gets the value of the port property.
+     * @return
+     *     possible object is
+     *     {@link PortType }
+     */
+    public PortType getPort() {
+        return port;
+    }
+
+    /**
+     * Sets the value of the port property.
+     * @param value
+     *     allowed object is
+     *     {@link PortType }
+     */
+    public void setPort(PortType value) {
+        this.port = value;
+    }
+
+    /**
+     * Gets the value of the id property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getId() {
+        return id;
+    }
+
+    /**
+     * Sets the value of the id property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setId(String value) {
+        this.id = value;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/CpointsType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/CpointsType.java
new file mode 100644
index 0000000..4c820ed
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/CpointsType.java
@@ -0,0 +1,67 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import java.util.ArrayList;
+import java.util.List;
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for cpointsType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="cpointsType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="connection_point" type="{http://www.example.org/nffg/}cpType" maxOccurs="unbounded"/>
+ *       &lt;/sequence>
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "cpointsType", propOrder = {
+    "connectionPoint"
+})
+public class CpointsType {
+
+    @XmlElement(name = "connection_point", required = true)
+    protected List<CpType> connectionPoint;
+
+    /**
+     * Gets the value of the connectionPoint property.
+     * <p>
+     * This accessor method returns a reference to the live list,
+     * not a snapshot. Therefore any modification you make to the
+     * returned list will be present inside the JAXB object.
+     * This is why there is not a <CODE>set</CODE> method for the connectionPoint property.
+     * <p>
+     * For example, to add a new item, do as follows:
+     * <pre>
+     *    getConnectionPoint().add(newItem);
+     * </pre>
+     * <p>
+     * Objects of the following type(s) are allowed in the list
+     * {@link CpType }
+     */
+    public List<CpType> getConnectionPoint() {
+        if (connectionPoint == null) {
+            connectionPoint = new ArrayList<CpType>();
+        }
+        return this.connectionPoint;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/CtrlInterfacesType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/CtrlInterfacesType.java
new file mode 100644
index 0000000..02ad675
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/CtrlInterfacesType.java
@@ -0,0 +1,67 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import java.util.ArrayList;
+import java.util.List;
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for ctrlInterfacesType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="ctrlInterfacesType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="control_interface" type="{http://www.example.org/nffg/}ciType" maxOccurs="unbounded" minOccurs="0"/>
+ *       &lt;/sequence>
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "ctrlInterfacesType", propOrder = {
+    "controlInterface"
+})
+public class CtrlInterfacesType {
+
+    @XmlElement(name = "control_interface")
+    protected List<CiType> controlInterface;
+
+    /**
+     * Gets the value of the controlInterface property.
+     * <p>
+     * This accessor method returns a reference to the live list,
+     * not a snapshot. Therefore any modification you make to the
+     * returned list will be present inside the JAXB object.
+     * This is why there is not a <CODE>set</CODE> method for the controlInterface property.
+     * <p>
+     * For example, to add a new item, do as follows:
+     * <pre>
+     *    getControlInterface().add(newItem);
+     * </pre>
+     * <p>
+     * Objects of the following type(s) are allowed in the list
+     * {@link CiType }
+     */
+    public List<CiType> getControlInterface() {
+        if (controlInterface == null) {
+            controlInterface = new ArrayList<CiType>();
+        }
+        return this.controlInterface;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/EpCpType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/EpCpType.java
new file mode 100644
index 0000000..a9448c1
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/EpCpType.java
@@ -0,0 +1,89 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import java.util.ArrayList;
+import java.util.List;
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlAttribute;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for ep-cpType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="ep-cpType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="flowrules" type="{http://www.example.org/nffg/}flowrulesType" maxOccurs="unbounded" minOccurs="0"/>
+ *       &lt;/sequence>
+ *       &lt;attribute name="id_ref" use="required" type="{http://www.w3.org/2001/XMLSchema}string" />
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "ep-cpType", propOrder = {
+    "flowrules"
+})
+public class EpCpType {
+
+    protected List<FlowrulesType> flowrules;
+    @XmlAttribute(name = "id_ref", required = true)
+    protected String idRef;
+
+    /**
+     * Gets the value of the flowrules property.
+     * <p>
+     * This accessor method returns a reference to the live list,
+     * not a snapshot. Therefore any modification you make to the
+     * returned list will be present inside the JAXB object.
+     * This is why there is not a <CODE>set</CODE> method for the flowrules property.
+     * <p>
+     * For example, to add a new item, do as follows:
+     * <pre>
+     *    getFlowrules().add(newItem);
+     * </pre>
+     * <p>
+     * Objects of the following type(s) are allowed in the list
+     * {@link FlowrulesType }
+     */
+    public List<FlowrulesType> getFlowrules() {
+        if (flowrules == null) {
+            flowrules = new ArrayList<FlowrulesType>();
+        }
+        return this.flowrules;
+    }
+
+    /**
+     * Gets the value of the idRef property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getIdRef() {
+        return idRef;
+    }
+
+    /**
+     * Sets the value of the idRef property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setIdRef(String value) {
+        this.idRef = value;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/EpType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/EpType.java
new file mode 100644
index 0000000..2ae875d
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/EpType.java
@@ -0,0 +1,260 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlAttribute;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for epType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="epType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="flowspace">
+ *           &lt;complexType>
+ *             &lt;complexContent>
+ *               &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *                 &lt;sequence>
+ *                   &lt;group ref="{http://www.example.org/nffg/}L2HeaderParameters"/>
+ *                   &lt;group ref="{http://www.example.org/nffg/}L3HeaderParameters"/>
+ *                   &lt;group ref="{http://www.example.org/nffg/}L4HeaderParameters"/>
+ *                 &lt;/sequence>
+ *                 &lt;attribute name="nodeId" type="{http://www.w3.org/2001/XMLSchema}string" />
+ *                 &lt;attribute name="ingPhysPort" type="{http://www.w3.org/2001/XMLSchema}string" />
+ *               &lt;/restriction>
+ *             &lt;/complexContent>
+ *           &lt;/complexType>
+ *         &lt;/element>
+ *       &lt;/sequence>
+ *       &lt;attribute name="id" use="required" type="{http://www.example.org/nffg/}epIdType" />
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "epType", propOrder = {
+    "flowspace"
+})
+public class EpType {
+
+    @XmlElement(required = true)
+    protected EpType.Flowspace flowspace;
+    @XmlAttribute(name = "id", required = true)
+    protected String id;
+
+    /**
+     * Gets the value of the flowspace property.
+     * @return
+     *     possible object is
+     *     {@link EpType.Flowspace }
+     */
+    public EpType.Flowspace getFlowspace() {
+        return flowspace;
+    }
+
+    /**
+     * Sets the value of the flowspace property.
+     * @param value
+     *     allowed object is
+     *     {@link EpType.Flowspace }
+     */
+    public void setFlowspace(EpType.Flowspace value) {
+        this.flowspace = value;
+    }
+
+    /**
+     * Gets the value of the id property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getId() {
+        return id;
+    }
+
+    /**
+     * Sets the value of the id property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setId(String value) {
+        this.id = value;
+    }
+
+
+    /**
+     * <p>Java class for anonymous complex type.
+     * <p>The following schema fragment specifies the expected content contained within this class.
+     * <pre>
+     * &lt;complexType>
+     *   &lt;complexContent>
+     *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+     *       &lt;sequence>
+     *         &lt;group ref="{http://www.example.org/nffg/}L2HeaderParameters"/>
+     *         &lt;group ref="{http://www.example.org/nffg/}L3HeaderParameters"/>
+     *         &lt;group ref="{http://www.example.org/nffg/}L4HeaderParameters"/>
+     *       &lt;/sequence>
+     *       &lt;attribute name="nodeId" type="{http://www.w3.org/2001/XMLSchema}string" />
+     *       &lt;attribute name="ingPhysPort" type="{http://www.w3.org/2001/XMLSchema}string" />
+     *     &lt;/restriction>
+     *   &lt;/complexContent>
+     * &lt;/complexType>
+     * </pre>
+     */
+    @XmlAccessorType(XmlAccessType.FIELD)
+    @XmlType(name = "", propOrder = {
+        "mac",
+        "ip",
+        "tcp",
+        "udp"
+    })
+    public static class Flowspace {
+
+        protected it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Mac mac;
+        protected it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Ip ip;
+        protected it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Tcp tcp;
+        protected it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Udp udp;
+        @XmlAttribute(name = "nodeId")
+        protected String nodeId;
+        @XmlAttribute(name = "ingPhysPort")
+        protected String ingPhysPort;
+
+        /**
+         * Gets the value of the mac property.
+         * @return
+         *     possible object is
+         *     {@link it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Mac }
+         */
+        public it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Mac getMac() {
+            return mac;
+        }
+
+        /**
+         * Sets the value of the mac property.
+         * @param value
+         *     allowed object is
+         *     {@link it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Mac }
+         */
+        public void setMac(it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Mac value) {
+            this.mac = value;
+        }
+
+        /**
+         * Gets the value of the ip property.
+         * @return
+         *     possible object is
+         *     {@link it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Ip }
+         */
+        public it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Ip getIp() {
+            return ip;
+        }
+
+        /**
+         * Sets the value of the ip property.
+         * @param value
+         *     allowed object is
+         *     {@link it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Ip }
+         */
+        public void setIp(it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Ip value) {
+            this.ip = value;
+        }
+
+        /**
+         * Gets the value of the tcp property.
+         * @return
+         *     possible object is
+         *     {@link it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Tcp }
+         */
+        public it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Tcp getTcp() {
+            return tcp;
+        }
+
+        /**
+         * Sets the value of the tcp property.
+         * @param value
+         *     allowed object is
+         *     {@link it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Tcp }
+         */
+        public void setTcp(it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Tcp value) {
+            this.tcp = value;
+        }
+
+        /**
+         * Gets the value of the udp property.
+         * @return
+         *     possible object is
+         *     {@link it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Udp }
+         */
+        public it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Udp getUdp() {
+            return udp;
+        }
+
+        /**
+         * Sets the value of the udp property.
+         * @param value
+         *     allowed object is
+         *     {@link it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Udp }
+         */
+        public void setUdp(it.polito.nffg.neo4j.jaxb.FlowrulesType.Flowspace.Udp value) {
+            this.udp = value;
+        }
+
+        /**
+         * Gets the value of the nodeId property.
+         * @return
+         *     possible object is
+         *     {@link String }
+         */
+        public String getNodeId() {
+            return nodeId;
+        }
+
+        /**
+         * Sets the value of the nodeId property.
+         * @param value
+         *     allowed object is
+         *     {@link String }
+         */
+        public void setNodeId(String value) {
+            this.nodeId = value;
+        }
+
+        /**
+         * Gets the value of the ingPhysPort property.
+         * @return
+         *     possible object is
+         *     {@link String }
+         */
+        public String getIngPhysPort() {
+            return ingPhysPort;
+        }
+
+        /**
+         * Sets the value of the ingPhysPort property.
+         * @param value
+         *     allowed object is
+         *     {@link String }
+         */
+        public void setIngPhysPort(String value) {
+            this.ingPhysPort = value;
+        }
+
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/EpointsType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/EpointsType.java
new file mode 100644
index 0000000..850d8b6
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/EpointsType.java
@@ -0,0 +1,65 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import java.util.ArrayList;
+import java.util.List;
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for epointsType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="epointsType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="endpoint" type="{http://www.example.org/nffg/}epType" maxOccurs="unbounded" minOccurs="0"/>
+ *       &lt;/sequence>
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "epointsType", propOrder = {
+    "endpoint"
+})
+public class EpointsType {
+
+    protected List<EpType> endpoint;
+
+    /**
+     * Gets the value of the endpoint property.
+     * <p>
+     * This accessor method returns a reference to the live list,
+     * not a snapshot. Therefore any modification you make to the
+     * returned list will be present inside the JAXB object.
+     * This is why there is not a <CODE>set</CODE> method for the endpoint property.
+     * <p>
+     * For example, to add a new item, do as follows:
+     * <pre>
+     *    getEndpoint().add(newItem);
+     * </pre>
+     * <p>
+     * Objects of the following type(s) are allowed in the list
+     * {@link EpType }
+     */
+    public List<EpType> getEndpoint() {
+        if (endpoint == null) {
+            endpoint = new ArrayList<EpType>();
+        }
+        return this.endpoint;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/EpsCpsType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/EpsCpsType.java
new file mode 100644
index 0000000..181085e
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/EpsCpsType.java
@@ -0,0 +1,67 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import java.util.ArrayList;
+import java.util.List;
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for eps-cpsType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="eps-cpsType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="ep-cp" type="{http://www.example.org/nffg/}ep-cpType" maxOccurs="unbounded" minOccurs="0"/>
+ *       &lt;/sequence>
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "eps-cpsType", propOrder = {
+    "epCp"
+})
+public class EpsCpsType {
+
+    @XmlElement(name = "ep-cp")
+    protected List<EpCpType> epCp;
+
+    /**
+     * Gets the value of the epCp property.
+     * <p>
+     * This accessor method returns a reference to the live list,
+     * not a snapshot. Therefore any modification you make to the
+     * returned list will be present inside the JAXB object.
+     * This is why there is not a <CODE>set</CODE> method for the epCp property.
+     * <p>
+     * For example, to add a new item, do as follows:
+     * <pre>
+     *    getEpCp().add(newItem);
+     * </pre>
+     * <p>
+     * Objects of the following type(s) are allowed in the list
+     * {@link EpCpType }
+     */
+    public List<EpCpType> getEpCp() {
+        if (epCp == null) {
+            epCp = new ArrayList<EpCpType>();
+        }
+        return this.epCp;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/FlowrulesType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/FlowrulesType.java
new file mode 100644
index 0000000..53c8f79
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/FlowrulesType.java
@@ -0,0 +1,619 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlAttribute;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlSchemaType;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for flowrulesType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="flowrulesType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="flowspace">
+ *           &lt;complexType>
+ *             &lt;complexContent>
+ *               &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *                 &lt;sequence>
+ *                   &lt;group ref="{http://www.example.org/nffg/}L2HeaderParameters"/>
+ *                   &lt;group ref="{http://www.example.org/nffg/}L3HeaderParameters"/>
+ *                   &lt;group ref="{http://www.example.org/nffg/}L4HeaderParameters"/>
+ *                 &lt;/sequence>
+ *                 &lt;attribute name="ingPort" type="{http://www.w3.org/2001/XMLSchema}string" />
+ *               &lt;/restriction>
+ *             &lt;/complexContent>
+ *           &lt;/complexType>
+ *         &lt;/element>
+ *         &lt;element name="actions" type="{http://www.example.org/nffg/}actionsType"/>
+ *       &lt;/sequence>
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "flowrulesType", propOrder = {
+    "flowspace",
+    "actions"
+})
+public class FlowrulesType {
+
+    @XmlElement(required = true)
+    protected FlowrulesType.Flowspace flowspace;
+    @XmlElement(required = true)
+    protected ActionsType actions;
+
+    /**
+     * Gets the value of the flowspace property.
+     * @return
+     *     possible object is
+     *     {@link FlowrulesType.Flowspace }
+     */
+    public FlowrulesType.Flowspace getFlowspace() {
+        return flowspace;
+    }
+
+    /**
+     * Sets the value of the flowspace property.
+     * @param value
+     *     allowed object is
+     *     {@link FlowrulesType.Flowspace }
+     */
+    public void setFlowspace(FlowrulesType.Flowspace value) {
+        this.flowspace = value;
+    }
+
+    /**
+     * Gets the value of the actions property.
+     * @return
+     *     possible object is
+     *     {@link ActionsType }
+     */
+    public ActionsType getActions() {
+        return actions;
+    }
+
+    /**
+     * Sets the value of the actions property.
+     * @param value
+     *     allowed object is
+     *     {@link ActionsType }
+     */
+    public void setActions(ActionsType value) {
+        this.actions = value;
+    }
+
+
+    /**
+     * <p>Java class for anonymous complex type.
+     * <p>The following schema fragment specifies the expected content contained within this class.
+     * <pre>
+     * &lt;complexType>
+     *   &lt;complexContent>
+     *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+     *       &lt;sequence>
+     *         &lt;group ref="{http://www.example.org/nffg/}L2HeaderParameters"/>
+     *         &lt;group ref="{http://www.example.org/nffg/}L3HeaderParameters"/>
+     *         &lt;group ref="{http://www.example.org/nffg/}L4HeaderParameters"/>
+     *       &lt;/sequence>
+     *       &lt;attribute name="ingPort" type="{http://www.w3.org/2001/XMLSchema}string" />
+     *     &lt;/restriction>
+     *   &lt;/complexContent>
+     * &lt;/complexType>
+     * </pre>
+     */
+    @XmlAccessorType(XmlAccessType.FIELD)
+    @XmlType(name = "", propOrder = {
+        "mac",
+        "ip",
+        "tcp",
+        "udp"
+    })
+    public static class Flowspace {
+
+        protected FlowrulesType.Flowspace.Mac mac;
+        protected FlowrulesType.Flowspace.Ip ip;
+        protected FlowrulesType.Flowspace.Tcp tcp;
+        protected FlowrulesType.Flowspace.Udp udp;
+        @XmlAttribute(name = "ingPort")
+        protected String ingPort;
+
+        /**
+         * Gets the value of the mac property.
+         * @return
+         *     possible object is
+         *     {@link FlowrulesType.Flowspace.Mac }
+         */
+        public FlowrulesType.Flowspace.Mac getMac() {
+            return mac;
+        }
+
+        /**
+         * Sets the value of the mac property.
+         * @param value
+         *     allowed object is
+         *     {@link FlowrulesType.Flowspace.Mac }
+         */
+        public void setMac(FlowrulesType.Flowspace.Mac value) {
+            this.mac = value;
+        }
+
+        /**
+         * Gets the value of the ip property.
+         * @return
+         *     possible object is
+         *     {@link FlowrulesType.Flowspace.Ip }
+         */
+        public FlowrulesType.Flowspace.Ip getIp() {
+            return ip;
+        }
+
+        /**
+         * Sets the value of the ip property.
+         * @param value
+         *     allowed object is
+         *     {@link FlowrulesType.Flowspace.Ip }
+         */
+        public void setIp(FlowrulesType.Flowspace.Ip value) {
+            this.ip = value;
+        }
+
+        /**
+         * Gets the value of the tcp property.
+         * @return
+         *     possible object is
+         *     {@link FlowrulesType.Flowspace.Tcp }
+         */
+        public FlowrulesType.Flowspace.Tcp getTcp() {
+            return tcp;
+        }
+
+        /**
+         * Sets the value of the tcp property.
+         * @param value
+         *     allowed object is
+         *     {@link FlowrulesType.Flowspace.Tcp }
+         */
+        public void setTcp(FlowrulesType.Flowspace.Tcp value) {
+            this.tcp = value;
+        }
+
+        /**
+         * Gets the value of the udp property.
+         * @return
+         *     possible object is
+         *     {@link FlowrulesType.Flowspace.Udp }
+         */
+        public FlowrulesType.Flowspace.Udp getUdp() {
+            return udp;
+        }
+
+        /**
+         * Sets the value of the udp property.
+         * @param value
+         *     allowed object is
+         *     {@link FlowrulesType.Flowspace.Udp }
+         */
+        public void setUdp(FlowrulesType.Flowspace.Udp value) {
+            this.udp = value;
+        }
+
+        /**
+         * Gets the value of the ingPort property.
+         * @return
+         *     possible object is
+         *     {@link String }
+         */
+        public String getIngPort() {
+            return ingPort;
+        }
+
+        /**
+         * Sets the value of the ingPort property.
+         * @param value
+         *     allowed object is
+         *     {@link String }
+         */
+        public void setIngPort(String value) {
+            this.ingPort = value;
+        }
+
+
+        /**
+         * <p>Java class for anonymous complex type.
+         * <p>The following schema fragment specifies the expected content contained within this class.
+         * <pre>
+         * &lt;complexType>
+         *   &lt;complexContent>
+         *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+         *       &lt;attribute name="src" type="{http://www.example.org/net/}ipAddressType" />
+         *       &lt;attribute name="dst" type="{http://www.example.org/net/}ipAddressType" />
+         *       &lt;attribute name="ipProtocol" type="{http://www.w3.org/2001/XMLSchema}unsignedByte" />
+         *       &lt;attribute name="tos" type="{http://www.w3.org/2001/XMLSchema}unsignedByte" />
+         *     &lt;/restriction>
+         *   &lt;/complexContent>
+         * &lt;/complexType>
+         * </pre>
+         */
+        @XmlAccessorType(XmlAccessType.FIELD)
+        @XmlType(name = "")
+        public static class Ip {
+
+            @XmlAttribute(name = "src")
+            protected String src;
+            @XmlAttribute(name = "dst")
+            protected String dst;
+            @XmlAttribute(name = "ipProtocol")
+            @XmlSchemaType(name = "unsignedByte")
+            protected Short ipProtocol;
+            @XmlAttribute(name = "tos")
+            @XmlSchemaType(name = "unsignedByte")
+            protected Short tos;
+
+            /**
+             * Gets the value of the src property.
+             * @return
+             *     possible object is
+             *     {@link String }
+             */
+            public String getSrc() {
+                return src;
+            }
+
+            /**
+             * Sets the value of the src property.
+             * @param value
+             *     allowed object is
+             *     {@link String }
+             */
+            public void setSrc(String value) {
+                this.src = value;
+            }
+
+            /**
+             * Gets the value of the dst property.
+             * @return
+             *     possible object is
+             *     {@link String }
+             */
+            public String getDst() {
+                return dst;
+            }
+
+            /**
+             * Sets the value of the dst property.
+             * @param value
+             *     allowed object is
+             *     {@link String }
+             */
+            public void setDst(String value) {
+                this.dst = value;
+            }
+
+            /**
+             * Gets the value of the ipProtocol property.
+             * @return
+             *     possible object is
+             *     {@link Short }
+             */
+            public Short getIpProtocol() {
+                return ipProtocol;
+            }
+
+            /**
+             * Sets the value of the ipProtocol property.
+             * @param value
+             *     allowed object is
+             *     {@link Short }
+             */
+            public void setIpProtocol(Short value) {
+                this.ipProtocol = value;
+            }
+
+            /**
+             * Gets the value of the tos property.
+             * @return
+             *     possible object is
+             *     {@link Short }
+             */
+            public Short getTos() {
+                return tos;
+            }
+
+            /**
+             * Sets the value of the tos property.
+             * @param value
+             *     allowed object is
+             *     {@link Short }
+             */
+            public void setTos(Short value) {
+                this.tos = value;
+            }
+
+        }
+
+
+        /**
+         * <p>Java class for anonymous complex type.
+         * <p>The following schema fragment specifies the expected content contained within this class.
+         * <pre>
+         * &lt;complexType>
+         *   &lt;complexContent>
+         *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+         *       &lt;attribute name="src" type="{http://www.example.org/net/}macAddressType" />
+         *       &lt;attribute name="dst" type="{http://www.example.org/net/}macAddressType" />
+         *       &lt;attribute name="ethertype" type="{http://www.example.org/net/}ethertypeType" />
+         *       &lt;attribute name="vlanId" type="{http://www.example.org/net/}vlanIdType" />
+         *       &lt;attribute name="vlanPcp" type="{http://www.example.org/net/}vlanPcpType" />
+         *     &lt;/restriction>
+         *   &lt;/complexContent>
+         * &lt;/complexType>
+         * </pre>
+         */
+        @XmlAccessorType(XmlAccessType.FIELD)
+        @XmlType(name = "")
+        public static class Mac {
+
+            @XmlAttribute(name = "src")
+            protected String src;
+            @XmlAttribute(name = "dst")
+            protected String dst;
+            @XmlAttribute(name = "ethertype")
+            protected Integer ethertype;
+            @XmlAttribute(name = "vlanId")
+            protected Integer vlanId;
+            @XmlAttribute(name = "vlanPcp")
+            protected Integer vlanPcp;
+
+            /**
+             * Gets the value of the src property.
+             * @return
+             *     possible object is
+             *     {@link String }
+             */
+            public String getSrc() {
+                return src;
+            }
+
+            /**
+             * Sets the value of the src property.
+             * @param value
+             *     allowed object is
+             *     {@link String }
+             */
+            public void setSrc(String value) {
+                this.src = value;
+            }
+
+            /**
+             * Gets the value of the dst property.
+             * @return
+             *     possible object is
+             *     {@link String }
+             */
+            public String getDst() {
+                return dst;
+            }
+
+            /**
+             * Sets the value of the dst property.
+             * @param value
+             *     allowed object is
+             *     {@link String }
+             */
+            public void setDst(String value) {
+                this.dst = value;
+            }
+
+            /**
+             * Gets the value of the ethertype property.
+             * @return
+             *     possible object is
+             *     {@link Integer }
+             */
+            public Integer getEthertype() {
+                return ethertype;
+            }
+
+            /**
+             * Sets the value of the ethertype property.
+             * @param value
+             *     allowed object is
+             *     {@link Integer }
+             */
+            public void setEthertype(Integer value) {
+                this.ethertype = value;
+            }
+
+            /**
+             * Gets the value of the vlanId property.
+             * @return
+             *     possible object is
+             *     {@link Integer }
+             */
+            public Integer getVlanId() {
+                return vlanId;
+            }
+
+            /**
+             * Sets the value of the vlanId property.
+             * @param value
+             *     allowed object is
+             *     {@link Integer }
+             */
+            public void setVlanId(Integer value) {
+                this.vlanId = value;
+            }
+
+            /**
+             * Gets the value of the vlanPcp property.
+             * @return
+             *     possible object is
+             *     {@link Integer }
+             */
+            public Integer getVlanPcp() {
+                return vlanPcp;
+            }
+
+            /**
+             * Sets the value of the vlanPcp property.
+             * @param value
+             *     allowed object is
+             *     {@link Integer }
+             */
+            public void setVlanPcp(Integer value) {
+                this.vlanPcp = value;
+            }
+
+        }
+
+
+        /**
+         * <p>Java class for anonymous complex type.
+         * <p>The following schema fragment specifies the expected content contained within this class.
+         * <pre>
+         * &lt;complexType>
+         *   &lt;complexContent>
+         *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+         *       &lt;attribute name="src" type="{http://www.example.org/net/}portNumberType" />
+         *       &lt;attribute name="dst" type="{http://www.example.org/net/}portNumberType" />
+         *     &lt;/restriction>
+         *   &lt;/complexContent>
+         * &lt;/complexType>
+         * </pre>
+         */
+        @XmlAccessorType(XmlAccessType.FIELD)
+        @XmlType(name = "")
+        public static class Tcp {
+
+            @XmlAttribute(name = "src")
+            protected Integer src;
+            @XmlAttribute(name = "dst")
+            protected Integer dst;
+
+            /**
+             * Gets the value of the src property.
+             * @return
+             *     possible object is
+             *     {@link Integer }
+             */
+            public Integer getSrc() {
+                return src;
+            }
+
+            /**
+             * Sets the value of the src property.
+             * @param value
+             *     allowed object is
+             *     {@link Integer }
+             */
+            public void setSrc(Integer value) {
+                this.src = value;
+            }
+
+            /**
+             * Gets the value of the dst property.
+             * @return
+             *     possible object is
+             *     {@link Integer }
+             */
+            public Integer getDst() {
+                return dst;
+            }
+
+            /**
+             * Sets the value of the dst property.
+             * @param value
+             *     allowed object is
+             *     {@link Integer }
+             */
+            public void setDst(Integer value) {
+                this.dst = value;
+            }
+
+        }
+
+
+        /**
+         * <p>Java class for anonymous complex type.
+         * <p>The following schema fragment specifies the expected content contained within this class.
+         * <pre>
+         * &lt;complexType>
+         *   &lt;complexContent>
+         *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+         *       &lt;attribute name="src" type="{http://www.example.org/net/}portNumberType" />
+         *       &lt;attribute name="dst" type="{http://www.example.org/net/}portNumberType" />
+         *     &lt;/restriction>
+         *   &lt;/complexContent>
+         * &lt;/complexType>
+         * </pre>
+         */
+        @XmlAccessorType(XmlAccessType.FIELD)
+        @XmlType(name = "")
+        public static class Udp {
+
+            @XmlAttribute(name = "src")
+            protected Integer src;
+            @XmlAttribute(name = "dst")
+            protected Integer dst;
+
+            /**
+             * Gets the value of the src property.
+             * @return
+             *     possible object is
+             *     {@link Integer }
+             */
+            public Integer getSrc() {
+                return src;
+            }
+
+            /**
+             * Sets the value of the src property.
+             * @param value
+             *     allowed object is
+             *     {@link Integer }
+             */
+            public void setSrc(Integer value) {
+                this.src = value;
+            }
+
+            /**
+             * Gets the value of the dst property.
+             * @return
+             *     possible object is
+             *     {@link Integer }
+             */
+            public Integer getDst() {
+                return dst;
+            }
+
+            /**
+             * Sets the value of the dst property.
+             * @param value
+             *     allowed object is
+             *     {@link Integer }
+             */
+            public void setDst(Integer value) {
+                this.dst = value;
+            }
+
+        }
+
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/HttpMessage.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/HttpMessage.java
new file mode 100644
index 0000000..5dc7c29
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/HttpMessage.java
@@ -0,0 +1,108 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlRootElement;
+import javax.xml.bind.annotation.XmlSchemaType;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for anonymous complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType>
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="statusCode" type="{http://www.w3.org/2001/XMLSchema}unsignedShort"/>
+ *         &lt;element name="reasonPhrase" type="{http://www.w3.org/2001/XMLSchema}string"/>
+ *         &lt;element name="message" type="{http://www.w3.org/2001/XMLSchema}string" minOccurs="0"/>
+ *       &lt;/sequence>
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "", propOrder = {
+    "statusCode",
+    "reasonPhrase",
+    "message"
+})
+@XmlRootElement(name = "httpMessage", namespace = "http://www.example.org/response/")
+public class HttpMessage {
+
+    @XmlElement(namespace = "http://www.example.org/response/", defaultValue = "500")
+    @XmlSchemaType(name = "unsignedShort")
+    protected int statusCode;
+    @XmlElement(namespace = "http://www.example.org/response/", required = true, defaultValue = "Internal Server Error")
+    protected String reasonPhrase;
+    @XmlElement(namespace = "http://www.example.org/response/")
+    protected String message;
+
+    /**
+     * Gets the value of the statusCode property.
+     */
+    public int getStatusCode() {
+        return statusCode;
+    }
+
+    /**
+     * Sets the value of the statusCode property.
+     */
+    public void setStatusCode(int value) {
+        this.statusCode = value;
+    }
+
+    /**
+     * Gets the value of the reasonPhrase property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getReasonPhrase() {
+        return reasonPhrase;
+    }
+
+    /**
+     * Sets the value of the reasonPhrase property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setReasonPhrase(String value) {
+        this.reasonPhrase = value;
+    }
+
+    /**
+     * Gets the value of the message property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getMessage() {
+        return message;
+    }
+
+    /**
+     * Sets the value of the message property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setMessage(String value) {
+        this.message = value;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/MonParamsType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/MonParamsType.java
new file mode 100644
index 0000000..8651966
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/MonParamsType.java
@@ -0,0 +1,122 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import java.util.ArrayList;
+import java.util.List;
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlAttribute;
+import javax.xml.bind.annotation.XmlSchemaType;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for monParamsType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="monParamsType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="parameter" maxOccurs="unbounded" minOccurs="0">
+ *           &lt;complexType>
+ *             &lt;complexContent>
+ *               &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *                 &lt;attribute name="value" use="required" type="{http://www.w3.org/2001/XMLSchema}NMTOKENS" />
+ *               &lt;/restriction>
+ *             &lt;/complexContent>
+ *           &lt;/complexType>
+ *         &lt;/element>
+ *       &lt;/sequence>
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "monParamsType", propOrder = {
+    "parameter"
+})
+public class MonParamsType {
+
+    protected List<MonParamsType.Parameter> parameter;
+
+    /**
+     * Gets the value of the parameter property.
+     * <p>
+     * This accessor method returns a reference to the live list,
+     * not a snapshot. Therefore any modification you make to the
+     * returned list will be present inside the JAXB object.
+     * This is why there is not a <CODE>set</CODE> method for the parameter property.
+     * <p>
+     * For example, to add a new item, do as follows:
+     * <pre>
+     *    getParameter().add(newItem);
+     * </pre>
+     * <p>
+     * Objects of the following type(s) are allowed in the list
+     * {@link MonParamsType.Parameter }
+     */
+    public List<MonParamsType.Parameter> getParameter() {
+        if (parameter == null) {
+            parameter = new ArrayList<MonParamsType.Parameter>();
+        }
+        return this.parameter;
+    }
+
+
+    /**
+     * <p>Java class for anonymous complex type.
+     * <p>The following schema fragment specifies the expected content contained within this class.
+     * <pre>
+     * &lt;complexType>
+     *   &lt;complexContent>
+     *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+     *       &lt;attribute name="value" use="required" type="{http://www.w3.org/2001/XMLSchema}NMTOKENS" />
+     *     &lt;/restriction>
+     *   &lt;/complexContent>
+     * &lt;/complexType>
+     * </pre>
+     */
+    @XmlAccessorType(XmlAccessType.FIELD)
+    @XmlType(name = "")
+    public static class Parameter {
+
+        @XmlAttribute(name = "value", required = true)
+        @XmlSchemaType(name = "NMTOKENS")
+        protected List<String> value;
+
+        /**
+         * Gets the value of the value property.
+         * <p>
+         * This accessor method returns a reference to the live list,
+         * not a snapshot. Therefore any modification you make to the
+         * returned list will be present inside the JAXB object.
+         * This is why there is not a <CODE>set</CODE> method for the value property.
+         * <p>
+         * For example, to add a new item, do as follows:
+         * <pre>
+         *    getValue().add(newItem);
+         * </pre>
+         * <p>
+         * Objects of the following type(s) are allowed in the list
+         * {@link String }
+         */
+        public List<String> getValue() {
+            if (value == null) {
+                value = new ArrayList<String>();
+            }
+            return this.value;
+        }
+
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/NeType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/NeType.java
new file mode 100644
index 0000000..9cdecdd
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/NeType.java
@@ -0,0 +1,133 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlAttribute;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for neType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="neType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="eps-cps" type="{http://www.example.org/nffg/}eps-cpsType"/>
+ *         &lt;element name="monitoring_parameters" type="{http://www.example.org/nffg/}monParamsType"/>
+ *       &lt;/sequence>
+ *       &lt;attribute name="id" use="required" type="{http://www.example.org/nffg/}neIdType" />
+ *       &lt;attribute name="type" use="required" type="{http://www.w3.org/2001/XMLSchema}string" />
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "neType", propOrder = {
+    "epsCps",
+    "monitoringParameters"
+})
+public class NeType {
+
+    @XmlElement(name = "eps-cps", required = true)
+    protected EpsCpsType epsCps;
+    @XmlElement(name = "monitoring_parameters", required = true)
+    protected MonParamsType monitoringParameters;
+    @XmlAttribute(name = "id", required = true)
+    protected String id;
+    @XmlAttribute(name = "type", required = true)
+    protected String type;
+
+    /**
+     * Gets the value of the epsCps property.
+     * @return
+     *     possible object is
+     *     {@link EpsCpsType }
+     */
+    public EpsCpsType getEpsCps() {
+        return epsCps;
+    }
+
+    /**
+     * Sets the value of the epsCps property.
+     * @param value
+     *     allowed object is
+     *     {@link EpsCpsType }
+     */
+    public void setEpsCps(EpsCpsType value) {
+        this.epsCps = value;
+    }
+
+    /**
+     * Gets the value of the monitoringParameters property.
+     * @return
+     *     possible object is
+     *     {@link MonParamsType }
+     */
+    public MonParamsType getMonitoringParameters() {
+        return monitoringParameters;
+    }
+
+    /**
+     * Sets the value of the monitoringParameters property.
+     * @param value
+     *     allowed object is
+     *     {@link MonParamsType }
+     */
+    public void setMonitoringParameters(MonParamsType value) {
+        this.monitoringParameters = value;
+    }
+
+    /**
+     * Gets the value of the id property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getId() {
+        return id;
+    }
+
+    /**
+     * Sets the value of the id property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setId(String value) {
+        this.id = value;
+    }
+
+    /**
+     * Gets the value of the type property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getType() {
+        return type;
+    }
+
+    /**
+     * Sets the value of the type property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setType(String value) {
+        this.type = value;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/NelementsType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/NelementsType.java
new file mode 100644
index 0000000..0ccef60
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/NelementsType.java
@@ -0,0 +1,67 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import java.util.ArrayList;
+import java.util.List;
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for nelementsType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="nelementsType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="network_element" type="{http://www.example.org/nffg/}neType" maxOccurs="unbounded" minOccurs="0"/>
+ *       &lt;/sequence>
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "nelementsType", propOrder = {
+    "networkElement"
+})
+public class NelementsType {
+
+    @XmlElement(name = "network_element")
+    protected List<NeType> networkElement;
+
+    /**
+     * Gets the value of the networkElement property.
+     * <p>
+     * This accessor method returns a reference to the live list,
+     * not a snapshot. Therefore any modification you make to the
+     * returned list will be present inside the JAXB object.
+     * This is why there is not a <CODE>set</CODE> method for the networkElement property.
+     * <p>
+     * For example, to add a new item, do as follows:
+     * <pre>
+     *    getNetworkElement().add(newItem);
+     * </pre>
+     * <p>
+     * Objects of the following type(s) are allowed in the list
+     * {@link NeType }
+     */
+    public List<NeType> getNetworkElement() {
+        if (networkElement == null) {
+            networkElement = new ArrayList<NeType>();
+        }
+        return this.networkElement;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/NfType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/NfType.java
new file mode 100644
index 0000000..f2b50ea
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/NfType.java
@@ -0,0 +1,181 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlAttribute;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for nfType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="nfType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="specification" type="{http://www.example.org/nffg/}specType"/>
+ *         &lt;element name="connection_points" type="{http://www.example.org/nffg/}cpointsType"/>
+ *         &lt;element name="control_interfaces" type="{http://www.example.org/nffg/}ctrlInterfacesType"/>
+ *         &lt;element name="monitoring_parameters" type="{http://www.example.org/nffg/}monParamsType"/>
+ *       &lt;/sequence>
+ *       &lt;attribute name="id" use="required" type="{http://www.example.org/nffg/}nfIdType" />
+ *       &lt;attribute name="functionalType" use="required" type="{http://www.w3.org/2001/XMLSchema}string" />
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "nfType", propOrder = {
+    "specification",
+    "connectionPoints",
+    "controlInterfaces",
+    "monitoringParameters"
+})
+public class NfType {
+
+    @XmlElement(required = true)
+    protected SpecType specification;
+    @XmlElement(name = "connection_points", required = true)
+    protected CpointsType connectionPoints;
+    @XmlElement(name = "control_interfaces", required = true)
+    protected CtrlInterfacesType controlInterfaces;
+    @XmlElement(name = "monitoring_parameters", required = true)
+    protected MonParamsType monitoringParameters;
+    @XmlAttribute(name = "id", required = true)
+    protected String id;
+    @XmlAttribute(name = "functionalType", required = true)
+    protected String functionalType;
+
+    /**
+     * Gets the value of the specification property.
+     * @return
+     *     possible object is
+     *     {@link SpecType }
+     */
+    public SpecType getSpecification() {
+        return specification;
+    }
+
+    /**
+     * Sets the value of the specification property.
+     * @param value
+     *     allowed object is
+     *     {@link SpecType }
+     */
+    public void setSpecification(SpecType value) {
+        this.specification = value;
+    }
+
+    /**
+     * Gets the value of the connectionPoints property.
+     * @return
+     *     possible object is
+     *     {@link CpointsType }
+     */
+    public CpointsType getConnectionPoints() {
+        return connectionPoints;
+    }
+
+    /**
+     * Sets the value of the connectionPoints property.
+     * @param value
+     *     allowed object is
+     *     {@link CpointsType }
+     */
+    public void setConnectionPoints(CpointsType value) {
+        this.connectionPoints = value;
+    }
+
+    /**
+     * Gets the value of the controlInterfaces property.
+     * @return
+     *     possible object is
+     *     {@link CtrlInterfacesType }
+     */
+    public CtrlInterfacesType getControlInterfaces() {
+        return controlInterfaces;
+    }
+
+    /**
+     * Sets the value of the controlInterfaces property.
+     * @param value
+     *     allowed object is
+     *     {@link CtrlInterfacesType }
+     */
+    public void setControlInterfaces(CtrlInterfacesType value) {
+        this.controlInterfaces = value;
+    }
+
+    /**
+     * Gets the value of the monitoringParameters property.
+     * @return
+     *     possible object is
+     *     {@link MonParamsType }
+     */
+    public MonParamsType getMonitoringParameters() {
+        return monitoringParameters;
+    }
+
+    /**
+     * Sets the value of the monitoringParameters property.
+     * @param value
+     *     allowed object is
+     *     {@link MonParamsType }
+     */
+    public void setMonitoringParameters(MonParamsType value) {
+        this.monitoringParameters = value;
+    }
+
+    /**
+     * Gets the value of the id property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getId() {
+        return id;
+    }
+
+    /**
+     * Sets the value of the id property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setId(String value) {
+        this.id = value;
+    }
+
+    /**
+     * Gets the value of the functionalType property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getFunctionalType() {
+        return functionalType;
+    }
+
+    /**
+     * Sets the value of the functionalType property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setFunctionalType(String value) {
+        this.functionalType = value;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/Nffg.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/Nffg.java
new file mode 100644
index 0000000..54e6daf
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/Nffg.java
@@ -0,0 +1,183 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlAttribute;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlRootElement;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for anonymous complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType>
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="endpoints" type="{http://www.example.org/nffg/}epointsType"/>
+ *         &lt;element name="network_functions" type="{http://www.example.org/nffg/}nfunctionsType"/>
+ *         &lt;element name="network_elements" type="{http://www.example.org/nffg/}nelementsType"/>
+ *         &lt;element name="monitoring_parameters" type="{http://www.example.org/nffg/}monParamsType"/>
+ *       &lt;/sequence>
+ *       &lt;attribute name="id" type="{http://www.example.org/nffg/}nffgIdType" />
+ *       &lt;attribute name="version" type="{http://www.w3.org/2001/XMLSchema}string" />
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "", propOrder = {
+    "endpoints",
+    "networkFunctions",
+    "networkElements",
+    "monitoringParameters"
+})
+@XmlRootElement(name = "nffg")
+public class Nffg {
+
+    @XmlElement(required = true)
+    protected EpointsType endpoints;
+    @XmlElement(name = "network_functions", required = true)
+    protected NfunctionsType networkFunctions;
+    @XmlElement(name = "network_elements", required = true)
+    protected NelementsType networkElements;
+    @XmlElement(name = "monitoring_parameters", required = true)
+    protected MonParamsType monitoringParameters;
+    @XmlAttribute(name = "id")
+    protected String id;
+    @XmlAttribute(name = "version")
+    protected String version;
+
+    /**
+     * Gets the value of the endpoints property.
+     * @return
+     *     possible object is
+     *     {@link EpointsType }
+     */
+    public EpointsType getEndpoints() {
+        return endpoints;
+    }
+
+    /**
+     * Sets the value of the endpoints property.
+     * @param value
+     *     allowed object is
+     *     {@link EpointsType }
+     */
+    public void setEndpoints(EpointsType value) {
+        this.endpoints = value;
+    }
+
+    /**
+     * Gets the value of the networkFunctions property.
+     * @return
+     *     possible object is
+     *     {@link NfunctionsType }
+     */
+    public NfunctionsType getNetworkFunctions() {
+        return networkFunctions;
+    }
+
+    /**
+     * Sets the value of the networkFunctions property.
+     * @param value
+     *     allowed object is
+     *     {@link NfunctionsType }
+     */
+    public void setNetworkFunctions(NfunctionsType value) {
+        this.networkFunctions = value;
+    }
+
+    /**
+     * Gets the value of the networkElements property.
+     * @return
+     *     possible object is
+     *     {@link NelementsType }
+     */
+    public NelementsType getNetworkElements() {
+        return networkElements;
+    }
+
+    /**
+     * Sets the value of the networkElements property.
+     * @param value
+     *     allowed object is
+     *     {@link NelementsType }
+     */
+    public void setNetworkElements(NelementsType value) {
+        this.networkElements = value;
+    }
+
+    /**
+     * Gets the value of the monitoringParameters property.
+     * @return
+     *     possible object is
+     *     {@link MonParamsType }
+     */
+    public MonParamsType getMonitoringParameters() {
+        return monitoringParameters;
+    }
+
+    /**
+     * Sets the value of the monitoringParameters property.
+     * @param value
+     *     allowed object is
+     *     {@link MonParamsType }
+     */
+    public void setMonitoringParameters(MonParamsType value) {
+        this.monitoringParameters = value;
+    }
+
+    /**
+     * Gets the value of the id property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getId() {
+        return id;
+    }
+
+    /**
+     * Sets the value of the id property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setId(String value) {
+        this.id = value;
+    }
+
+    /**
+     * Gets the value of the version property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getVersion() {
+        return version;
+    }
+
+    /**
+     * Sets the value of the version property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setVersion(String value) {
+        this.version = value;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/NffgSet.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/NffgSet.java
new file mode 100644
index 0000000..8fdc137
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/NffgSet.java
@@ -0,0 +1,69 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import java.util.ArrayList;
+import java.util.List;
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlRootElement;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for anonymous complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType>
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element ref="{http://www.example.org/nffg/}nffg" maxOccurs="unbounded"/>
+ *       &lt;/sequence>
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "", propOrder = {
+    "nffg"
+})
+@XmlRootElement(name = "nffg-set")
+public class NffgSet {
+
+    @XmlElement(required = true)
+    protected List<Nffg> nffg;
+
+    /**
+     * Gets the value of the nffg property.
+     * <p>
+     * This accessor method returns a reference to the live list,
+     * not a snapshot. Therefore any modification you make to the
+     * returned list will be present inside the JAXB object.
+     * This is why there is not a <CODE>set</CODE> method for the nffg property.
+     * <p>
+     * For example, to add a new item, do as follows:
+     * <pre>
+     *    getNffg().add(newItem);
+     * </pre>
+     * <p>
+     * Objects of the following type(s) are allowed in the list
+     * {@link Nffg }
+     */
+    public List<Nffg> getNffg() {
+        if (nffg == null) {
+            nffg = new ArrayList<Nffg>();
+        }
+        return this.nffg;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/NfunctionsType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/NfunctionsType.java
new file mode 100644
index 0000000..7b26ac3
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/NfunctionsType.java
@@ -0,0 +1,67 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import java.util.ArrayList;
+import java.util.List;
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for nfunctionsType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="nfunctionsType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="network_function" type="{http://www.example.org/nffg/}nfType" maxOccurs="unbounded" minOccurs="0"/>
+ *       &lt;/sequence>
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "nfunctionsType", propOrder = {
+    "networkFunction"
+})
+public class NfunctionsType {
+
+    @XmlElement(name = "network_function")
+    protected List<NfType> networkFunction;
+
+    /**
+     * Gets the value of the networkFunction property.
+     * <p>
+     * This accessor method returns a reference to the live list,
+     * not a snapshot. Therefore any modification you make to the
+     * returned list will be present inside the JAXB object.
+     * This is why there is not a <CODE>set</CODE> method for the networkFunction property.
+     * <p>
+     * For example, to add a new item, do as follows:
+     * <pre>
+     *    getNetworkFunction().add(newItem);
+     * </pre>
+     * <p>
+     * Objects of the following type(s) are allowed in the list
+     * {@link NfType }
+     */
+    public List<NfType> getNetworkFunction() {
+        if (networkFunction == null) {
+            networkFunction = new ArrayList<NfType>();
+        }
+        return this.networkFunction;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/ObjectFactory.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/ObjectFactory.java
new file mode 100644
index 0000000..1c7c7f5
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/ObjectFactory.java
@@ -0,0 +1,319 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import javax.xml.bind.JAXBElement;
+import javax.xml.bind.annotation.XmlElementDecl;
+import javax.xml.bind.annotation.XmlRegistry;
+import javax.xml.namespace.QName;
+
+
+/**
+ * This object contains factory methods for each 
+ * Java content interface and Java element interface 
+ * generated in the it.polito.nffg.neo4j.jaxb package. 
+ * <p>An ObjectFactory allows you to programatically 
+ * construct new instances of the Java representation 
+ * for XML content. The Java representation of XML 
+ * content can consist of schema derived interfaces 
+ * and classes representing the binding of schema 
+ * type definitions, element declarations and model 
+ * groups.  Factory methods for each of these are 
+ * provided in this class.
+ */
+@XmlRegistry
+public class ObjectFactory {
+
+    private final static QName _Nffg_QNAME = new QName("http://www.example.org/nffg/", "nffg");
+    private final static QName _NffgSet_QNAME = new QName("http://www.example.org/nffg/", "nffg-set");
+
+
+    /**
+     * Create a new ObjectFactory that can be used to create new instances of schema derived classes for package: it.polito.nffg.neo4j.jaxb
+     */
+    public ObjectFactory() {
+    }
+
+    /**
+     * Create an instance of {@link FlowrulesType }
+     */
+    public FlowrulesType createFlowrulesType() {
+        return new FlowrulesType();
+    }
+
+    /**
+     * Create an instance of {@link FlowrulesType.Flowspace }
+     */
+    public FlowrulesType.Flowspace createFlowrulesTypeFlowspace() {
+        return new FlowrulesType.Flowspace();
+    }
+
+    /**
+     * Create an instance of {@link CiType }
+     */
+    public CiType createCiType() {
+        return new CiType();
+    }
+
+    /**
+     * Create an instance of {@link CiType.Attributes }
+     */
+    public CiType.Attributes createCiTypeAttributes() {
+        return new CiType.Attributes();
+    }
+
+    /**
+     * Create an instance of {@link EpType }
+     */
+    public EpType createEpType() {
+        return new EpType();
+    }
+
+    /**
+     * Create an instance of {@link SpecType }
+     */
+    public SpecType createSpecType() {
+        return new SpecType();
+    }
+
+    /**
+     * Create an instance of {@link MonParamsType }
+     */
+    public MonParamsType createMonParamsType() {
+        return new MonParamsType();
+    }
+
+    /**
+     * Create an instance of {@link NffgSet }
+     */
+    public NffgSet createNffgSet() {
+        return new NffgSet();
+    }
+
+    /**
+     * Create an instance of {@link Nffg }
+     */
+    public Nffg createNffg() {
+        return new Nffg();
+    }
+
+    /**
+     * Create an instance of {@link EpointsType }
+     */
+    public EpointsType createEpointsType() {
+        return new EpointsType();
+    }
+
+    /**
+     * Create an instance of {@link NfunctionsType }
+     */
+    public NfunctionsType createNfunctionsType() {
+        return new NfunctionsType();
+    }
+
+    /**
+     * Create an instance of {@link NelementsType }
+     */
+    public NelementsType createNelementsType() {
+        return new NelementsType();
+    }
+
+    /**
+     * Create an instance of {@link CpointsType }
+     */
+    public CpointsType createCpointsType() {
+        return new CpointsType();
+    }
+
+    /**
+     * Create an instance of {@link NfType }
+     */
+    public NfType createNfType() {
+        return new NfType();
+    }
+
+    /**
+     * Create an instance of {@link EpCpType }
+     */
+    public EpCpType createEpCpType() {
+        return new EpCpType();
+    }
+
+    /**
+     * Create an instance of {@link EpsCpsType }
+     */
+    public EpsCpsType createEpsCpsType() {
+        return new EpsCpsType();
+    }
+
+    /**
+     * Create an instance of {@link ActionsType }
+     */
+    public ActionsType createActionsType() {
+        return new ActionsType();
+    }
+
+    /**
+     * Create an instance of {@link ActionType }
+     */
+    public ActionType createActionType() {
+        return new ActionType();
+    }
+
+    /**
+     * Create an instance of {@link PortType }
+     */
+    public PortType createPortType() {
+        return new PortType();
+    }
+
+    /**
+     * Create an instance of {@link CpType }
+     */
+    public CpType createCpType() {
+        return new CpType();
+    }
+
+    /**
+     * Create an instance of {@link CtrlInterfacesType }
+     */
+    public CtrlInterfacesType createCtrlInterfacesType() {
+        return new CtrlInterfacesType();
+    }
+
+    /**
+     * Create an instance of {@link NeType }
+     */
+    public NeType createNeType() {
+        return new NeType();
+    }
+
+    /**
+     * Create an instance of {@link Paths }
+     */
+    public Paths createPaths() {
+        return new Paths();
+    }
+
+    /**
+     * Create an instance of {@link HttpMessage }
+     */
+    public HttpMessage createHttpMessage() {
+        return new HttpMessage();
+    }
+
+    /**
+     * Create an instance of {@link Property }
+     */
+    public Property createProperty() {
+        return new Property();
+    }
+
+    /**
+     * Create an instance of {@link FlowrulesType.Flowspace.Mac }
+     */
+    public FlowrulesType.Flowspace.Mac createFlowrulesTypeFlowspaceMac() {
+        return new FlowrulesType.Flowspace.Mac();
+    }
+
+    /**
+     * Create an instance of {@link FlowrulesType.Flowspace.Ip }
+     */
+    public FlowrulesType.Flowspace.Ip createFlowrulesTypeFlowspaceIp() {
+        return new FlowrulesType.Flowspace.Ip();
+    }
+
+    /**
+     * Create an instance of {@link FlowrulesType.Flowspace.Tcp }
+     */
+    public FlowrulesType.Flowspace.Tcp createFlowrulesTypeFlowspaceTcp() {
+        return new FlowrulesType.Flowspace.Tcp();
+    }
+
+    /**
+     * Create an instance of {@link FlowrulesType.Flowspace.Udp }
+     */
+    public FlowrulesType.Flowspace.Udp createFlowrulesTypeFlowspaceUdp() {
+        return new FlowrulesType.Flowspace.Udp();
+    }
+
+    /**
+     * Create an instance of {@link CiType.Attributes.Attribute }
+     */
+    public CiType.Attributes.Attribute createCiTypeAttributesAttribute() {
+        return new CiType.Attributes.Attribute();
+    }
+
+    /**
+     * Create an instance of {@link EpType.Flowspace }
+     */
+    public EpType.Flowspace createEpTypeFlowspace() {
+        return new EpType.Flowspace();
+    }
+
+    /**
+     * Create an instance of {@link SpecType.Deployment }
+     */
+    public SpecType.Deployment createSpecTypeDeployment() {
+        return new SpecType.Deployment();
+    }
+
+    /**
+     * Create an instance of {@link SpecType.Image }
+     */
+    public SpecType.Image createSpecTypeImage() {
+        return new SpecType.Image();
+    }
+
+    /**
+     * Create an instance of {@link SpecType.Cpu }
+     */
+    public SpecType.Cpu createSpecTypeCpu() {
+        return new SpecType.Cpu();
+    }
+
+    /**
+     * Create an instance of {@link SpecType.Memory }
+     */
+    public SpecType.Memory createSpecTypeMemory() {
+        return new SpecType.Memory();
+    }
+
+    /**
+     * Create an instance of {@link SpecType.Storage }
+     */
+    public SpecType.Storage createSpecTypeStorage() {
+        return new SpecType.Storage();
+    }
+
+    /**
+     * Create an instance of {@link MonParamsType.Parameter }
+     */
+    public MonParamsType.Parameter createMonParamsTypeParameter() {
+        return new MonParamsType.Parameter();
+    }
+
+    /**
+     * Create an instance of {@link JAXBElement }{@code <}{@link NffgType }{@code >}}
+     */
+    @XmlElementDecl(namespace = "http://www.example.org/nffg/", name = "nffg")
+    public JAXBElement<Nffg> createNffg(Nffg value) {
+        return new JAXBElement<Nffg>(_Nffg_QNAME, Nffg.class, null, value);
+    }
+
+    /**
+     * Create an instance of {@link JAXBElement }{@code <}{@link NffgSetType }{@code >}}
+     */
+    @XmlElementDecl(namespace = "http://www.example.org/nffg/", name = "nffg-set")
+    public JAXBElement<NffgSet> createNffgSet(NffgSet value) {
+        return new JAXBElement<NffgSet>(_NffgSet_QNAME, NffgSet.class, null, value);
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/Paths.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/Paths.java
new file mode 100644
index 0000000..f097b30
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/Paths.java
@@ -0,0 +1,163 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import java.util.ArrayList;
+import java.util.List;
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlAttribute;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlRootElement;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for anonymous complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType>
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;choice>
+ *         &lt;element name="message" type="{http://www.w3.org/2001/XMLSchema}string"/>
+ *         &lt;element name="path" type="{http://www.w3.org/2001/XMLSchema}string" maxOccurs="unbounded"/>
+ *       &lt;/choice>
+ *       &lt;attribute name="source" type="{http://www.w3.org/2001/XMLSchema}string" />
+ *       &lt;attribute name="destination" type="{http://www.w3.org/2001/XMLSchema}string" />
+ *       &lt;attribute name="direction" type="{http://www.w3.org/2001/XMLSchema}string" />
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "", propOrder = {
+    "message",
+    "path"
+})
+@XmlRootElement(name = "paths", namespace = "http://www.example.org/response/")
+public class Paths {
+
+    @XmlElement(namespace = "http://www.example.org/response/")
+    protected String message;
+    @XmlElement(namespace = "http://www.example.org/response/")
+    protected List<String> path;
+    @XmlAttribute(name = "source")
+    protected String source;
+    @XmlAttribute(name = "destination")
+    protected String destination;
+    @XmlAttribute(name = "direction")
+    protected String direction;
+
+    /**
+     * Gets the value of the message property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getMessage() {
+        return message;
+    }
+
+    /**
+     * Sets the value of the message property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setMessage(String value) {
+        this.message = value;
+    }
+
+    /**
+     * Gets the value of the path property.
+     * <p>
+     * This accessor method returns a reference to the live list,
+     * not a snapshot. Therefore any modification you make to the
+     * returned list will be present inside the JAXB object.
+     * This is why there is not a <CODE>set</CODE> method for the path property.
+     * <p>
+     * For example, to add a new item, do as follows:
+     * <pre>
+     *    getPath().add(newItem);
+     * </pre>
+     * <p>
+     * Objects of the following type(s) are allowed in the list
+     * {@link String }
+     */
+    public List<String> getPath() {
+        if (path == null) {
+            path = new ArrayList<String>();
+        }
+        return this.path;
+    }
+
+    /**
+     * Gets the value of the source property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getSource() {
+        return source;
+    }
+
+    /**
+     * Sets the value of the source property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setSource(String value) {
+        this.source = value;
+    }
+
+    /**
+     * Gets the value of the destination property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getDestination() {
+        return destination;
+    }
+
+    /**
+     * Sets the value of the destination property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setDestination(String value) {
+        this.destination = value;
+    }
+
+    /**
+     * Gets the value of the direction property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getDirection() {
+        return direction;
+    }
+
+    /**
+     * Sets the value of the direction property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setDirection(String value) {
+        this.direction = value;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/PortDirEnumType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/PortDirEnumType.java
new file mode 100644
index 0000000..f98907d
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/PortDirEnumType.java
@@ -0,0 +1,60 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import javax.xml.bind.annotation.XmlEnum;
+import javax.xml.bind.annotation.XmlEnumValue;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for portDirEnumType.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <p>
+ * <pre>
+ * &lt;simpleType name="portDirEnumType">
+ *   &lt;restriction base="{http://www.w3.org/2001/XMLSchema}string">
+ *     &lt;enumeration value="in"/>
+ *     &lt;enumeration value="out"/>
+ *     &lt;enumeration value="both"/>
+ *   &lt;/restriction>
+ * &lt;/simpleType>
+ * </pre>
+ */
+@XmlType(name = "portDirEnumType")
+@XmlEnum
+public enum PortDirEnumType {
+
+    @XmlEnumValue("in")
+    IN("in"),
+    @XmlEnumValue("out")
+    OUT("out"),
+    @XmlEnumValue("both")
+    BOTH("both");
+    private final String value;
+
+    PortDirEnumType(String v) {
+        value = v;
+    }
+
+    public String value() {
+        return value;
+    }
+
+    public static PortDirEnumType fromValue(String v) {
+        for (PortDirEnumType c: PortDirEnumType.values()) {
+            if (c.value.equals(v)) {
+                return c;
+            }
+        }
+        throw new IllegalArgumentException(v);
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/PortType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/PortType.java
new file mode 100644
index 0000000..4d44cf5
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/PortType.java
@@ -0,0 +1,104 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlAttribute;
+import javax.xml.bind.annotation.XmlSchemaType;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for portType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="portType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;attribute name="id" use="required" type="{http://www.w3.org/2001/XMLSchema}unsignedShort" />
+ *       &lt;attribute name="direction" use="required" type="{http://www.example.org/nffg/}portDirEnumType" />
+ *       &lt;attribute name="type" type="{http://www.w3.org/2001/XMLSchema}string" default="N.A." />
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "portType")
+public class PortType {
+
+    @XmlAttribute(name = "id", required = true)
+    @XmlSchemaType(name = "unsignedShort")
+    protected int id;
+    @XmlAttribute(name = "direction", required = true)
+    protected PortDirEnumType direction;
+    @XmlAttribute(name = "type")
+    protected String type;
+
+    /**
+     * Gets the value of the id property.
+     */
+    public int getId() {
+        return id;
+    }
+
+    /**
+     * Sets the value of the id property.
+     */
+    public void setId(int value) {
+        this.id = value;
+    }
+
+    /**
+     * Gets the value of the direction property.
+     * @return
+     *     possible object is
+     *     {@link PortDirEnumType }
+     */
+    public PortDirEnumType getDirection() {
+        return direction;
+    }
+
+    /**
+     * Sets the value of the direction property.
+     * @param value
+     *     allowed object is
+     *     {@link PortDirEnumType }
+     */
+    public void setDirection(PortDirEnumType value) {
+        this.direction = value;
+    }
+
+    /**
+     * Gets the value of the type property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getType() {
+        if (type == null) {
+            return "N.A.";
+        } else {
+            return type;
+        }
+    }
+
+    /**
+     * Sets the value of the type property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setType(String value) {
+        this.type = value;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/Property.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/Property.java
new file mode 100644
index 0000000..973eaf8
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/Property.java
@@ -0,0 +1,152 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlAttribute;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlRootElement;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for anonymous complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType>
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="name" type="{http://www.w3.org/2001/XMLSchema}string"/>
+ *         &lt;element name="response" type="{http://www.w3.org/2001/XMLSchema}boolean"/>
+ *       &lt;/sequence>
+ *       &lt;attribute name="source" type="{http://www.w3.org/2001/XMLSchema}string" />
+ *       &lt;attribute name="destination" type="{http://www.w3.org/2001/XMLSchema}string" />
+ *       &lt;attribute name="direction" type="{http://www.w3.org/2001/XMLSchema}string" />
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "", propOrder = {
+    "name",
+    "response"
+})
+@XmlRootElement(name = "property", namespace = "http://www.example.org/response/")
+public class Property {
+
+    @XmlElement(namespace = "http://www.example.org/response/", required = true)
+    protected String name;
+    @XmlElement(namespace = "http://www.example.org/response/")
+    protected boolean response;
+    @XmlAttribute(name = "source")
+    protected String source;
+    @XmlAttribute(name = "destination")
+    protected String destination;
+    @XmlAttribute(name = "direction")
+    protected String direction;
+
+    /**
+     * Gets the value of the name property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getName() {
+        return name;
+    }
+
+    /**
+     * Sets the value of the name property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setName(String value) {
+        this.name = value;
+    }
+
+    /**
+     * Gets the value of the response property.
+     */
+    public boolean isResponse() {
+        return response;
+    }
+
+    /**
+     * Sets the value of the response property.
+     */
+    public void setResponse(boolean value) {
+        this.response = value;
+    }
+
+    /**
+     * Gets the value of the source property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getSource() {
+        return source;
+    }
+
+    /**
+     * Sets the value of the source property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setSource(String value) {
+        this.source = value;
+    }
+
+    /**
+     * Gets the value of the destination property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getDestination() {
+        return destination;
+    }
+
+    /**
+     * Sets the value of the destination property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setDestination(String value) {
+        this.destination = value;
+    }
+
+    /**
+     * Gets the value of the direction property.
+     * @return
+     *     possible object is
+     *     {@link String }
+     */
+    public String getDirection() {
+        return direction;
+    }
+
+    /**
+     * Sets the value of the direction property.
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     */
+    public void setDirection(String value) {
+        this.direction = value;
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/SpecType.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/SpecType.java
new file mode 100644
index 0000000..e4d434b
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/SpecType.java
@@ -0,0 +1,577 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+package it.polito.nffg.neo4j.jaxb;
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlAttribute;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlSchemaType;
+import javax.xml.bind.annotation.XmlType;
+
+
+/**
+ * <p>Java class for specType complex type.
+ * <p>The following schema fragment specifies the expected content contained within this class.
+ * <pre>
+ * &lt;complexType name="specType">
+ *   &lt;complexContent>
+ *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *       &lt;sequence>
+ *         &lt;element name="deployment">
+ *           &lt;complexType>
+ *             &lt;complexContent>
+ *               &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *                 &lt;attribute name="type" type="{http://www.w3.org/2001/XMLSchema}string" default="N.A." />
+ *               &lt;/restriction>
+ *             &lt;/complexContent>
+ *           &lt;/complexType>
+ *         &lt;/element>
+ *         &lt;element name="image">
+ *           &lt;complexType>
+ *             &lt;complexContent>
+ *               &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *                 &lt;attribute name="uri" type="{http://www.w3.org/2001/XMLSchema}anyURI" default="N.A." />
+ *               &lt;/restriction>
+ *             &lt;/complexContent>
+ *           &lt;/complexType>
+ *         &lt;/element>
+ *         &lt;element name="cpu">
+ *           &lt;complexType>
+ *             &lt;complexContent>
+ *               &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *                 &lt;attribute name="model" type="{http://www.w3.org/2001/XMLSchema}string" default="N.A." />
+ *                 &lt;attribute name="architecture" type="{http://www.w3.org/2001/XMLSchema}string" default="N.A." />
+ *                 &lt;attribute name="numCores" type="{http://www.w3.org/2001/XMLSchema}unsignedByte" default="1" />
+ *                 &lt;attribute name="clockSpeed" type="{http://www.w3.org/2001/XMLSchema}string" default="N.A." />
+ *               &lt;/restriction>
+ *             &lt;/complexContent>
+ *           &lt;/complexType>
+ *         &lt;/element>
+ *         &lt;element name="memory">
+ *           &lt;complexType>
+ *             &lt;complexContent>
+ *               &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *                 &lt;attribute name="type" type="{http://www.w3.org/2001/XMLSchema}string" default="N.A." />
+ *                 &lt;attribute name="size" type="{http://www.w3.org/2001/XMLSchema}string" default="N.A." />
+ *               &lt;/restriction>
+ *             &lt;/complexContent>
+ *           &lt;/complexType>
+ *         &lt;/element>
+ *         &lt;element name="storage">
+ *           &lt;complexType>
+ *             &lt;complexContent>
+ *               &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+ *                 &lt;attribute name="type" type="{http://www.w3.org/2001/XMLSchema}string" default="N.A." />
+ *                 &lt;attribute name="size" type="{http://www.w3.org/2001/XMLSchema}string" default="N.A." />
+ *               &lt;/restriction>
+ *             &lt;/complexContent>
+ *           &lt;/complexType>
+ *         &lt;/element>
+ *       &lt;/sequence>
+ *     &lt;/restriction>
+ *   &lt;/complexContent>
+ * &lt;/complexType>
+ * </pre>
+ */
+@XmlAccessorType(XmlAccessType.FIELD)
+@XmlType(name = "specType", propOrder = {
+    "deployment",
+    "image",
+    "cpu",
+    "memory",
+    "storage"
+})
+public class SpecType {
+
+    @XmlElement(required = true)
+    protected SpecType.Deployment deployment;
+    @XmlElement(required = true)
+    protected SpecType.Image image;
+    @XmlElement(required = true)
+    protected SpecType.Cpu cpu;
+    @XmlElement(required = true)
+    protected SpecType.Memory memory;
+    @XmlElement(required = true)
+    protected SpecType.Storage storage;
+
+    /**
+     * Gets the value of the deployment property.
+     * @return
+     *     possible object is
+     *     {@link SpecType.Deployment }
+     */
+    public SpecType.Deployment getDeployment() {
+        return deployment;
+    }
+
+    /**
+     * Sets the value of the deployment property.
+     * @param value
+     *     allowed object is
+     *     {@link SpecType.Deployment }
+     */
+    public void setDeployment(SpecType.Deployment value) {
+        this.deployment = value;
+    }
+
+    /**
+     * Gets the value of the image property.
+     * @return
+     *     possible object is
+     *     {@link SpecType.Image }
+     */
+    public SpecType.Image getImage() {
+        return image;
+    }
+
+    /**
+     * Sets the value of the image property.
+     * @param value
+     *     allowed object is
+     *     {@link SpecType.Image }
+     */
+    public void setImage(SpecType.Image value) {
+        this.image = value;
+    }
+
+    /**
+     * Gets the value of the cpu property.
+     * @return
+     *     possible object is
+     *     {@link SpecType.Cpu }
+     */
+    public SpecType.Cpu getCpu() {
+        return cpu;
+    }
+
+    /**
+     * Sets the value of the cpu property.
+     * @param value
+     *     allowed object is
+     *     {@link SpecType.Cpu }
+     */
+    public void setCpu(SpecType.Cpu value) {
+        this.cpu = value;
+    }
+
+    /**
+     * Gets the value of the memory property.
+     * @return
+     *     possible object is
+     *     {@link SpecType.Memory }
+     */
+    public SpecType.Memory getMemory() {
+        return memory;
+    }
+
+    /**
+     * Sets the value of the memory property.
+     * @param value
+     *     allowed object is
+     *     {@link SpecType.Memory }
+     */
+    public void setMemory(SpecType.Memory value) {
+        this.memory = value;
+    }
+
+    /**
+     * Gets the value of the storage property.
+     * @return
+     *     possible object is
+     *     {@link SpecType.Storage }
+     */
+    public SpecType.Storage getStorage() {
+        return storage;
+    }
+
+    /**
+     * Sets the value of the storage property.
+     * @param value
+     *     allowed object is
+     *     {@link SpecType.Storage }
+     */
+    public void setStorage(SpecType.Storage value) {
+        this.storage = value;
+    }
+
+
+    /**
+     * <p>Java class for anonymous complex type.
+     * <p>The following schema fragment specifies the expected content contained within this class.
+     * <pre>
+     * &lt;complexType>
+     *   &lt;complexContent>
+     *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+     *       &lt;attribute name="model" type="{http://www.w3.org/2001/XMLSchema}string" default="N.A." />
+     *       &lt;attribute name="architecture" type="{http://www.w3.org/2001/XMLSchema}string" default="N.A." />
+     *       &lt;attribute name="numCores" type="{http://www.w3.org/2001/XMLSchema}unsignedByte" default="1" />
+     *       &lt;attribute name="clockSpeed" type="{http://www.w3.org/2001/XMLSchema}string" default="N.A." />
+     *     &lt;/restriction>
+     *   &lt;/complexContent>
+     * &lt;/complexType>
+     * </pre>
+     */
+    @XmlAccessorType(XmlAccessType.FIELD)
+    @XmlType(name = "")
+    public static class Cpu {
+
+        @XmlAttribute(name = "model")
+        protected String model;
+        @XmlAttribute(name = "architecture")
+        protected String architecture;
+        @XmlAttribute(name = "numCores")
+        @XmlSchemaType(name = "unsignedByte")
+        protected Short numCores;
+        @XmlAttribute(name = "clockSpeed")
+        protected String clockSpeed;
+
+        /**
+         * Gets the value of the model property.
+         * @return
+         *     possible object is
+         *     {@link String }
+         */
+        public String getModel() {
+            if (model == null) {
+                return "N.A.";
+            } else {
+                return model;
+            }
+        }
+
+        /**
+         * Sets the value of the model property.
+         * @param value
+         *     allowed object is
+         *     {@link String }
+         */
+        public void setModel(String value) {
+            this.model = value;
+        }
+
+        /**
+         * Gets the value of the architecture property.
+         * @return
+         *     possible object is
+         *     {@link String }
+         */
+        public String getArchitecture() {
+            if (architecture == null) {
+                return "N.A.";
+            } else {
+                return architecture;
+            }
+        }
+
+        /**
+         * Sets the value of the architecture property.
+         * @param value
+         *     allowed object is
+         *     {@link String }
+         */
+        public void setArchitecture(String value) {
+            this.architecture = value;
+        }
+
+        /**
+         * Gets the value of the numCores property.
+         * @return
+         *     possible object is
+         *     {@link Short }
+         */
+        public short getNumCores() {
+            if (numCores == null) {
+                return ((short) 1);
+            } else {
+                return numCores;
+            }
+        }
+
+        /**
+         * Sets the value of the numCores property.
+         * @param value
+         *     allowed object is
+         *     {@link Short }
+         */
+        public void setNumCores(Short value) {
+            this.numCores = value;
+        }
+
+        /**
+         * Gets the value of the clockSpeed property.
+         * @return
+         *     possible object is
+         *     {@link String }
+         */
+        public String getClockSpeed() {
+            if (clockSpeed == null) {
+                return "N.A.";
+            } else {
+                return clockSpeed;
+            }
+        }
+
+        /**
+         * Sets the value of the clockSpeed property.
+         * @param value
+         *     allowed object is
+         *     {@link String }
+         */
+        public void setClockSpeed(String value) {
+            this.clockSpeed = value;
+        }
+
+    }
+
+
+    /**
+     * <p>Java class for anonymous complex type.
+     * <p>The following schema fragment specifies the expected content contained within this class.
+     * <pre>
+     * &lt;complexType>
+     *   &lt;complexContent>
+     *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+     *       &lt;attribute name="type" type="{http://www.w3.org/2001/XMLSchema}string" default="N.A." />
+     *     &lt;/restriction>
+     *   &lt;/complexContent>
+     * &lt;/complexType>
+     * </pre>
+     */
+    @XmlAccessorType(XmlAccessType.FIELD)
+    @XmlType(name = "")
+    public static class Deployment {
+
+        @XmlAttribute(name = "type")
+        protected String type;
+
+        /**
+         * Gets the value of the type property.
+         * @return
+         *     possible object is
+         *     {@link String }
+         */
+        public String getType() {
+            if (type == null) {
+                return "N.A.";
+            } else {
+                return type;
+            }
+        }
+
+        /**
+         * Sets the value of the type property.
+         * @param value
+         *     allowed object is
+         *     {@link String }
+         */
+        public void setType(String value) {
+            this.type = value;
+        }
+
+    }
+
+
+    /**
+     * <p>Java class for anonymous complex type.
+     * <p>The following schema fragment specifies the expected content contained within this class.
+     * <pre>
+     * &lt;complexType>
+     *   &lt;complexContent>
+     *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+     *       &lt;attribute name="uri" type="{http://www.w3.org/2001/XMLSchema}anyURI" default="N.A." />
+     *     &lt;/restriction>
+     *   &lt;/complexContent>
+     * &lt;/complexType>
+     * </pre>
+     */
+    @XmlAccessorType(XmlAccessType.FIELD)
+    @XmlType(name = "")
+    public static class Image {
+
+        @XmlAttribute(name = "uri")
+        @XmlSchemaType(name = "anyURI")
+        protected String uri;
+
+        /**
+         * Gets the value of the uri property.
+         * @return
+         *     possible object is
+         *     {@link String }
+         */
+        public String getUri() {
+            if (uri == null) {
+                return "N.A.";
+            } else {
+                return uri;
+            }
+        }
+
+        /**
+         * Sets the value of the uri property.
+         * @param value
+         *     allowed object is
+         *     {@link String }
+         */
+        public void setUri(String value) {
+            this.uri = value;
+        }
+
+    }
+
+
+    /**
+     * <p>Java class for anonymous complex type.
+     * <p>The following schema fragment specifies the expected content contained within this class.
+     * <pre>
+     * &lt;complexType>
+     *   &lt;complexContent>
+     *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+     *       &lt;attribute name="type" type="{http://www.w3.org/2001/XMLSchema}string" default="N.A." />
+     *       &lt;attribute name="size" type="{http://www.w3.org/2001/XMLSchema}string" default="N.A." />
+     *     &lt;/restriction>
+     *   &lt;/complexContent>
+     * &lt;/complexType>
+     * </pre>
+     */
+    @XmlAccessorType(XmlAccessType.FIELD)
+    @XmlType(name = "")
+    public static class Memory {
+
+        @XmlAttribute(name = "type")
+        protected String type;
+        @XmlAttribute(name = "size")
+        protected String size;
+
+        /**
+         * Gets the value of the type property.
+         * @return
+         *     possible object is
+         *     {@link String }
+         */
+        public String getType() {
+            if (type == null) {
+                return "N.A.";
+            } else {
+                return type;
+            }
+        }
+
+        /**
+         * Sets the value of the type property.
+         * @param value
+         *     allowed object is
+         *     {@link String }
+         */
+        public void setType(String value) {
+            this.type = value;
+        }
+
+        /**
+         * Gets the value of the size property.
+         * @return
+         *     possible object is
+         *     {@link String }
+         */
+        public String getSize() {
+            if (size == null) {
+                return "N.A.";
+            } else {
+                return size;
+            }
+        }
+
+        /**
+         * Sets the value of the size property.
+         * @param value
+         *     allowed object is
+         *     {@link String }
+         */
+        public void setSize(String value) {
+            this.size = value;
+        }
+
+    }
+
+
+    /**
+     * <p>Java class for anonymous complex type.
+     * <p>The following schema fragment specifies the expected content contained within this class.
+     * <pre>
+     * &lt;complexType>
+     *   &lt;complexContent>
+     *     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
+     *       &lt;attribute name="type" type="{http://www.w3.org/2001/XMLSchema}string" default="N.A." />
+     *       &lt;attribute name="size" type="{http://www.w3.org/2001/XMLSchema}string" default="N.A." />
+     *     &lt;/restriction>
+     *   &lt;/complexContent>
+     * &lt;/complexType>
+     * </pre>
+     */
+    @XmlAccessorType(XmlAccessType.FIELD)
+    @XmlType(name = "")
+    public static class Storage {
+
+        @XmlAttribute(name = "type")
+        protected String type;
+        @XmlAttribute(name = "size")
+        protected String size;
+
+        /**
+         * Gets the value of the type property.
+         * @return
+         *     possible object is
+         *     {@link String }
+         */
+        public String getType() {
+            if (type == null) {
+                return "N.A.";
+            } else {
+                return type;
+            }
+        }
+
+        /**
+         * Sets the value of the type property.
+         * @param value
+         *     allowed object is
+         *     {@link String }
+         */
+        public void setType(String value) {
+            this.type = value;
+        }
+
+        /**
+         * Gets the value of the size property.
+         * @return
+         *     possible object is
+         *     {@link String }
+         */
+        public String getSize() {
+            if (size == null) {
+                return "N.A.";
+            } else {
+                return size;
+            }
+        }
+
+        /**
+         * Sets the value of the size property.
+         * @param value
+         *     allowed object is
+         *     {@link String }
+         */
+        public void setSize(String value) {
+            this.size = value;
+        }
+
+    }
+
+}
diff --git a/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/package-info.java b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/package-info.java
new file mode 100644
index 0000000..3d3c7b4
--- /dev/null
+++ b/verigraph/src/main/java/it/polito/nffg/neo4j/jaxb/package-info.java
@@ -0,0 +1,11 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Politecnico di Torino and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Apache License, Version 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *******************************************************************************/
+
+@javax.xml.bind.annotation.XmlSchema(namespace = "http://www.example.org/nffg/", elementFormDefault = javax.xml.bind.annotation.XmlNsForm.QUALIFIED)
+package it.polito.nffg.neo4j.jaxb;
diff --git a/verigraph/src/main/proto/verigraph.proto b/verigraph/src/main/proto/verigraph.proto
new file mode 100644
index 0000000..5f77c78
--- /dev/null
+++ b/verigraph/src/main/proto/verigraph.proto
@@ -0,0 +1,154 @@
+syntax = "proto3";
+
+package verigraph;
+
+option java_multiple_files = true;
+option java_package = "io.grpc.verigraph";
+option java_outer_classname = "VerigraphProto";
+
+// The service definition.
+service Verigraph {
+  // Obtains a list of graphs
+  rpc GetGraphs (GetRequest) returns (stream GraphGrpc) {}
+  // Obtains a graph
+  rpc GetGraph (RequestID) returns (GraphGrpc) {}
+  // Obtains a list of Nodes
+  rpc GetNodes (RequestID) returns (stream NodeGrpc) {}
+  // Obtains a node
+  rpc GetNode (RequestID) returns (NodeGrpc) {}
+  // Obtains a list of Neighbours
+  rpc GetNeighbours (RequestID) returns (stream NeighbourGrpc) {}
+  // Obtains a Neighbour
+  rpc GetNeighbour (RequestID) returns (NeighbourGrpc) {}
+
+  // Creates a graph
+  rpc CreateGraph (GraphGrpc) returns (NewGraph) {}
+  // Delete a graph
+  rpc DeleteGraph (RequestID) returns (Status) {}
+  // Updates a graph
+  rpc UpdateGraph (GraphGrpc) returns (NewGraph) {}
+  // Verify a policy
+  rpc VerifyPolicy (Policy) returns (VerificationGrpc) {}
+
+  // Creates a Node
+  rpc CreateNode (NodeGrpc) returns (NewNode) {}
+  // Delete a Node
+  rpc DeleteNode (RequestID) returns (Status) {}
+  // Updates a Node
+  rpc UpdateNode (NodeGrpc) returns (NewNode) {}
+  // Configures a Node
+  rpc ConfigureNode (ConfigurationGrpc) returns (Status) {}
+
+  // Creates a neighbour
+  rpc CreateNeighbour (NeighbourGrpc) returns (NewNeighbour) {}
+  // Delete a neighbour
+  rpc DeleteNeighbour (RequestID) returns (Status) {}
+  // Updates a neighbour
+  rpc UpdateNeighbour (NeighbourGrpc) returns (NewNeighbour) {}
+}
+
+message GetRequest {
+}
+
+message RequestID {
+  int64 idGraph = 1;
+  int64 idNode = 2;
+  int64 idNeighbour = 3;
+}
+
+message Policy{
+	int64 idGraph = 1;
+	string source = 2;
+  	string destination = 3;
+  	enum PolicyType {
+	   	reachability = 0;
+	   	isolation = 1;
+	   	traversal = 2;
+	}
+	PolicyType type = 4;
+	string middlebox = 5;
+}
+
+message ConfigurationGrpc{
+	int64 idGraph = 1;
+	int64 idNode = 2;
+	string description = 3;
+	string configuration = 4;
+	string id = 5;
+}
+
+message NodeGrpc{
+	int64 idGraph = 1;
+	string name = 2;
+	int64 id = 3;	//long
+	enum FunctionalType {
+		antispam = 0;
+	   	cache = 1;
+	   	dpi = 2;
+	   	endhost = 3;
+	   	endpoint = 4;
+	   	fieldmodifier = 5;
+	   	firewall = 6;
+	   	mailclient = 7;
+	   	mailserver = 8;
+	   	nat = 9;
+	   	vpnaccess = 10;
+	   	vpnexit = 11;
+	   	webclient = 12;
+	   	webserver = 13;
+	}
+	FunctionalType functional_type = 4;
+	repeated NeighbourGrpc neighbour = 5;
+	ConfigurationGrpc configuration = 6;
+	string errorMessage = 7;
+}
+
+message GraphGrpc{
+	int64 id = 1;	//long
+	repeated NodeGrpc node = 2;
+	string errorMessage = 3;
+}
+
+message NeighbourGrpc{
+	int64 idGraph = 1;
+  	int64 idNode = 2;
+	string name = 3;
+  	int64 id = 4;	//long
+  	string errorMessage = 5;
+}
+
+message NewGraph{
+	bool success = 1;
+	GraphGrpc graph = 2;
+	string errorMessage = 3;
+}
+
+message NewNode{
+	bool success = 1;
+	NodeGrpc node = 2;
+	string errorMessage = 3;
+}
+
+message NewNeighbour{
+	bool success = 1;
+	NeighbourGrpc neighbour = 2;
+	string errorMessage = 3;
+}
+
+message TestGrpc {
+  	repeated NodeGrpc node = 1;
+  	string result = 2;
+}
+
+message VerificationGrpc{
+	bool successOfOperation = 1;
+	string result = 2;
+	string comment = 3;
+	repeated TestGrpc test = 4;
+	string errorMessage = 5;
+}
+
+message Status{
+	bool success = 1;
+	string errorMessage = 2;
+}
\ No newline at end of file
diff --git a/verigraph/src/main/schema/net_types.xsd b/verigraph/src/main/schema/net_types.xsd
new file mode 100644
index 0000000..c99c7a6
--- /dev/null
+++ b/verigraph/src/main/schema/net_types.xsd
@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<schema xmlns="http://www.w3.org/2001/XMLSchema"
+        xmlns:net="http://www.example.org/net/"
+        targetNamespace="http://www.example.org/net/"
+        elementFormDefault="qualified">
+
+	<annotation>
+    	<documentation>
+      		Copyright (C) 2006-2007 Code Synthesis Tools CC
+
+			Redistribution and use with or without modification are permitted
+		    under the terms of the new BSD license. See the accompanying LICENSE
+		    file.
+    	</documentation>
+  	</annotation>
+
+	<simpleType name="macAddressType">
+  		<restriction base="string">
+  			<pattern value="(([a-fA-F0-9]{2})-){5,7}[a-fA-F0-9]{2}"/>
+  		</restriction>
+  	</simpleType>
+
+  	<simpleType name="ipAddressType">
+    	<restriction base="string">
+      		<pattern value="((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])\.){3}(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])"/>
+      		<pattern value="(([0-9a-fA-F]{1,4}:){6})(([0-9a-fA-F]{1,4}:[0-9a-fA-F]{1,4})|([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}))"/>
+    		<pattern value="(([0-9a-fA-F]{1,4}:)*|([0-9a-fA-F]{1,4}))*(::)(([0-9a-fA-F]{1,4}:)*|([0-9a-fA-F]{1,4}))*"/>
+    	</restriction>
+  	</simpleType>
+
+  	<simpleType name="portNumberType">
+    	<restriction base="unsignedShort">
+      		<minInclusive value="1"/>
+    	</restriction>
+  	</simpleType>
+
+  	<!-- <complexType name="ipEndpointStructType">
+    	<sequence>
+      		<element name="address" type="net:ipAddressType"/>
+      		<element name="port" type="net:portNumberType"/>
+    	</sequence>
+  	</complexType> -->
+
+  	<simpleType name="ethertypeType">
+  		<restriction base="unsignedShort">
+  			<minInclusive value="1536"/>
+  		</restriction>
+  	</simpleType>
+
+  	<simpleType name="vlanIdType">
+  		<restriction base="unsignedShort">
+  			<minInclusive value="1"/>
+  			<maxInclusive value="4095"/>
+  		</restriction>
+  	</simpleType>
+
+  	<simpleType name="vlanPcpType">
+  		<restriction base="unsignedShort">
+  			<maxInclusive value="7"/>
+  		</restriction>
+  	</simpleType>
+</schema>
\ No newline at end of file
diff --git a/verigraph/src/main/schema/nffg.xsd b/verigraph/src/main/schema/nffg.xsd
new file mode 100644
index 0000000..77e6f40
--- /dev/null
+++ b/verigraph/src/main/schema/nffg.xsd
@@ -0,0 +1,363 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<schema xmlns="http://www.w3.org/2001/XMLSchema"
+		xmlns:tns="http://www.example.org/nffg/"
+		xmlns:net="http://www.example.org/net/"
+		targetNamespace="http://www.example.org/nffg/"
+		elementFormDefault="qualified">
+
+	<import namespace="http://www.example.org/net/" schemaLocation="net_types.xsd"/>
+
+	<annotation>
+    	<documentation xml:lang="it">
+     		 Il formato prevede si possa avere come radice "nffg-set" oppure "nffg".
+     		 Nel primo caso ci sono più nf-fg contenuti nello stesso documento XML.
+    	</documentation>
+  	</annotation>
+
+	<group name="L2HeaderParameters">
+		<sequence>
+			<element name="Mac" minOccurs="0">
+				<complexType>
+					<attribute name="src" type="net:macAddressType" use="optional"/>
+					<attribute name="dst" type="net:macAddressType" use="optional"/>
+					<attribute name="ethertype" type="net:ethertypeType" use="optional"/>
+					<attribute name="vlanId" type="net:vlanIdType" use="optional"/>
+					<attribute name="vlanPcp" type="net:vlanPcpType" use="optional"/>
+				</complexType>
+			</element>
+		</sequence>
+	</group>
+
+	<group name="L3HeaderParameters">
+		<sequence>
+			<element name="Ip" minOccurs="0">
+				<complexType>
+					<attribute name="src" type="net:ipAddressType" use="optional"/>
+					<attribute name="dst" type="net:ipAddressType" use="optional"/>
+					<attribute name="ipProtocol" type="unsignedByte" use="optional"/>
+					<attribute name="tos" type="unsignedByte" use="optional"/>
+				</complexType>
+			</element>
+		</sequence>
+	</group>
+
+	<!-- controllare nel programma che non ci siano combinazioni non ammesse -->
+	<group name="L4HeaderParameters">
+		<choice>
+			<element name="Tcp" minOccurs="0">
+				<complexType>
+					<attribute name="src" type="net:portNumberType" use="optional"/>
+					<attribute name="dst" type="net:portNumberType" use="optional"/>
+				</complexType>
+			</element>
+			<element name="Udp" minOccurs="0">
+				<complexType>
+					<attribute name="src" type="net:portNumberType" use="optional"/>
+					<attribute name="dst" type="net:portNumberType" use="optional"/>
+				</complexType>
+			</element>
+		</choice>
+	</group>
+
+	<!-- alla fine controlloare tutti gli xpath perchè dopo dei cambiamenti potrebbero non andare più bene -->
+	<element name="nffg-set" type="tns:nffg-setType">
+		<unique name="nffgIdUnique">
+	      	<selector xpath="tns:nf-fg"/>
+	      	<field xpath="@id"/>
+	    </unique>
+
+	    <!-- forse la NF va spostata dentro graphs e resa referenziabile (condivisibile da più nffg) -->
+	    <!-- così facendo però, si deve trovare un modo per avere le NF dentro nffg nel caso sia questo la radice -->
+	    <unique name="nfIdUnique">
+	      	<selector xpath="tns:nf-fg/tns:network_functions/tns:network_function"/>
+	      	<field xpath="@id"/>
+	    </unique>
+	</element>
+
+	<element name="nffg" type="tns:nffgType">
+		<unique name="epIdUnique">
+	      	<selector xpath="tns:endpoints/tns:endpoint"/>
+	      	<field xpath="@id"/>
+	    </unique>
+
+	    <unique name="cpIdUnique">
+	      	<selector xpath="tns:network_functions/tns:network_function/tns:connection_points/tns:connection_point"/>
+	      	<field xpath="@id"/>
+	    </unique>
+
+	    <unique name="portIdUnique">
+	      	<selector xpath="tns:network_functions/tns:network_function/tns:connection_points/tns:connection_point/tns:port"/>
+	      	<field xpath="@id"/>
+	    </unique>
+
+	    <unique name="ciIdUnique">
+	      	<selector xpath="tns:network_functions/tns:network_function/tns:control_interfaces/tns:control_interface"/>
+	      	<field xpath="@id"/>
+	    </unique>
+
+	    <unique name="neIdUnique">
+	      	<selector xpath="tns:network_elements/tns:network_element"/>
+	      	<field xpath="@id"/>
+	    </unique>
+
+	    <unique name="epcpIdRefUnique">
+	    	<selector xpath="tns:network_elements/tns:network_element/tns:eps-cps/tns:ep-cp"/>
+	    	<field xpath="@id_ref"/>
+	    </unique>
+	</element>
+
+	<complexType name="monParamsType">
+		<sequence>
+			<element name="parameter" maxOccurs="unbounded">
+				<complexType>
+					<attribute name="value" type="NMTOKENS" use="required"/>
+				</complexType>
+			</element>
+		</sequence>
+	</complexType>
+
+    <complexType name="nffg-setType">
+		<sequence>
+			<element ref="tns:nffg" maxOccurs="unbounded"/>
+		</sequence>
+	</complexType>
+
+    <complexType name="nffgType">
+    	<sequence>
+    		<element name="endpoints" type="tns:epointsType" nillable="true"/>
+    		<element name="network_functions" type="tns:nfunctionsType" nillable="true"/>
+    		<element name="network_elements" type="tns:nelementsType" nillable="true"/>
+    		<element name="monitoring_parameters" type="tns:monParamsType" nillable="true"/>
+    	</sequence>
+    	<attribute name="id" type="tns:nffgIdType" use="optional"/>
+    	<attribute name="version" type="string" use="optional"/>
+    </complexType>
+
+    <simpleType name="nffgIdType">
+    	<restriction base="string">
+    		<pattern value="nffg_\d+"/>
+    	</restriction>
+    </simpleType>
+
+    <complexType name="epointsType">
+    	<sequence>
+    		<element name="endpoint" type="tns:epType" maxOccurs="unbounded"/>
+    	</sequence>
+    </complexType>
+
+    <complexType name="epType">
+    	<sequence>
+    		<!-- valutare se renderlo nillable o tenere la cardinalità a * -->
+			<element name="flowspace">
+		    	<complexType>
+		    		<sequence>
+		    			<group ref="tns:L2HeaderParameters"/>
+		    			<group ref="tns:L3HeaderParameters"/>
+		    			<group ref="tns:L4HeaderParameters"/>
+		    		</sequence>
+		    		<attribute name="nodeId" type="string" use="optional"/>
+		    		<attribute name="ingPhysPort" type="string" use="optional"/>
+		    	</complexType>
+		    </element>
+    	</sequence>
+    	<attribute name="id" type="tns:epIdType" use="required"/>
+    </complexType>
+
+    <simpleType name="epIdType">
+    	<restriction base="string">
+    		<pattern value="[a-z]*_\d+"/>
+    	</restriction>
+    </simpleType>
+
+    <complexType name="nfunctionsType">
+    	<sequence>
+    		<element name="network_function" type="tns:nfType" maxOccurs="unbounded"/>
+    	</sequence>
+    </complexType>
+
+    <complexType name="nfType">
+    	<sequence>
+    		<element name="specification" type="tns:specType"/>
+    		<element name="connection_points" type="tns:cpointsType"/>
+    		<element name="control_interfaces" type="tns:ctrlInterfacesType"/>
+    		<element name="monitoring_parameters" type="tns:monParamsType" nillable="true"/>
+    	</sequence>
+    	<attribute name="id" type="tns:nfIdType" use="required"/>
+    	<attribute name="functionalType" type="string" use="required"/>
+    </complexType>
+
+    <simpleType name="nfIdType">
+    	<restriction base="string">
+    		<pattern value="[a-z]*_\d+"/>
+    	</restriction>
+    </simpleType>
+
+    <complexType name="specType">
+    	<sequence>
+    		<element name="deployment">
+    			<complexType>
+    				<attribute name="type" type="string" use="optional" default="N.A."/>
+    			</complexType>
+    		</element>
+    		<element name="image">
+    			<complexType>
+    				<!-- controllare come viene mappata la info -->
+    				<attribute name="uri" type="anyURI" use="optional" default="N.A."/>
+    			</complexType>
+    		</element>
+    		<element name="cpu">
+    			<complexType>
+    				<attribute name="model" type="string" use="optional" default="N.A."/>
+    				<attribute name="architecture" type="string" use="optional" default="N.A."/>
+    				<attribute name="numCores" type="unsignedByte" use="optional" default="1"/>
+    				<attribute name="clockSpeed" type="string" use="optional" default="N.A."/>
+    			</complexType>
+    		</element>
+    		<element name="memory">
+    			<complexType>
+    				<attribute name="type" type="string" use="optional" default="N.A."/>
+    				<attribute name="size" type="string" use="optional" default="N.A."/>
+    			</complexType>
+    		</element>
+    		<element name="storage">
+    			<complexType>
+    				<attribute name="type" type="string" use="optional" default="N.A."/>
+    				<attribute name="size" type="string" use="optional" default="N.A."/>
+    			</complexType>
+    		</element>
+    	</sequence>
+    </complexType>
+
+    <complexType name="cpointsType">
+    	<sequence>
+    		<element name="connection_point" type="tns:cpType" maxOccurs="unbounded"/>
+    	</sequence>
+    </complexType>
+
+    <complexType name="cpType">
+    	<sequence>
+    		<element name="port" type="tns:portType"/>
+    	</sequence>
+    	<attribute name="id" type="tns:cpIdType" use="required"/>
+    </complexType>
+
+    <complexType name="portType">
+    	<attribute name="id" type="unsignedShort" use="required"/>
+    	<attribute name="direction" type="tns:portDirEnumType" use="required"/>
+    	<attribute name="type" type="string" use="optional" default="N.A."/>
+    </complexType>
+
+    <simpleType name="portDirEnumType">
+    	<restriction base="string">
+    		<enumeration value="in"/>
+    		<enumeration value="out"/>
+    		<enumeration value="both"/>
+    	</restriction>
+    </simpleType>
+
+    <simpleType name="cpIdType">
+    	<restriction base="string">
+    		<pattern value="cp_\d+"/>
+    	</restriction>
+    </simpleType>
+
+    <complexType name="ctrlInterfacesType">
+    	<sequence>
+    		<!-- valutare se renderlo nillable -->
+    		<element name="control_interface" type="tns:ciType" minOccurs="0" maxOccurs="unbounded"/>
+    	</sequence>
+    </complexType>
+
+    <complexType name="ciType">
+    	<sequence>
+    		<element name="attributes">
+    			<complexType>
+    				<sequence>
+    					<element name="attribute" minOccurs="0" maxOccurs="unbounded">
+    						<complexType>
+    							<attribute name="value" type="string" use="required"/>
+    						</complexType>
+    					</element>
+    				</sequence>
+    			</complexType>
+    		</element>
+    	</sequence>
+    	<attribute name="id" type="tns:ciIdType" use="required"/>
+    </complexType>
+
+    <simpleType name="ciIdType">
+    	<restriction base="string">
+    		<pattern value="ci_\d+"/>
+    	</restriction>
+    </simpleType>
+
+    <complexType name="nelementsType">
+    	<sequence>
+    		<element name="network_element" type="tns:neType" maxOccurs="unbounded"/>
+    	</sequence>
+    </complexType>
+
+    <complexType name="neType">
+    	<sequence>
+    		<element name="eps-cps" type="tns:eps-cpsType"/>
+    		<element name="monitoring_parameters" type="tns:monParamsType" nillable="true"/>
+    	</sequence>
+    	<attribute name="id" type="tns:neIdType" use="required"/>
+    	<attribute name="type" type="string" use="required"/>
+    </complexType>
+
+    <simpleType name="neIdType">
+    	<restriction base="string">
+    		<pattern value="ne_\d+"/>
+    	</restriction>
+    </simpleType>
+
+    <complexType name="eps-cpsType">
+    	<sequence>
+    		<element name="ep-cp" type="tns:ep-cpType" minOccurs="0" maxOccurs="unbounded"/>
+    	</sequence>
+    </complexType>
+
+    <complexType name="ep-cpType">
+    	<sequence>
+    		<element name="flowrules" type="tns:flowrulesType" minOccurs="0" maxOccurs="unbounded"/>
+    	</sequence>
+    	<attribute name="id_ref" type="string" use="required"/>
+    </complexType>
+
+    <complexType name="flowrulesType">
+    	<sequence>
+    		<!-- da fare valutazioni analoghe al flowspace di sopra -->
+    		<element name="flowspace">
+		    	<complexType>
+		    		<sequence>
+		    			<group ref="tns:L2HeaderParameters"/>
+		    			<group ref="tns:L3HeaderParameters"/>
+		    			<group ref="tns:L4HeaderParameters"/>
+		    		</sequence>
+		    		<attribute name="ingPort" type="string" use="optional"/>
+		    	</complexType>
+    		</element>
+    		<element name="actions" type="tns:actionsType"/>
+    	</sequence>
+    </complexType>
+
+    <complexType name="actionsType">
+	    <sequence>
+	    	<element name="action" type="tns:actionType" maxOccurs="unbounded"/>
+	    </sequence>
+    </complexType>
+
+    <complexType name="actionType">
+    	<attribute name="type" type="tns:actionEnumType" use="required"/>
+    	<attribute name="port" type="string" use="optional"/>
+    </complexType>
+
+    <!-- controllare via SW che se l'aziione è output la porta deve esserci -->
+  	<simpleType name="actionEnumType">
+    	<restriction base="string">
+    		<enumeration value="discard"/>
+    		<enumeration value="output"/>
+    	</restriction>
+    </simpleType>
+</schema>
\ No newline at end of file
diff --git a/verigraph/src/main/webapp/json/antispam.json b/verigraph/src/main/webapp/json/antispam.json
new file mode 100644
index 0000000..dae3db9
--- /dev/null
+++ b/verigraph/src/main/webapp/json/antispam.json
@@ -0,0 +1,11 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Antispam",
+    "description": "Polito Antispam",
+    "type": "array",
+    "items": {
+        "type": "string"
+    },
+    "minItems": 0,
+    "uniqueItems": true
+}
\ No newline at end of file
diff --git a/verigraph/src/main/webapp/json/cache.json b/verigraph/src/main/webapp/json/cache.json
new file mode 100644
index 0000000..0511e7b
--- /dev/null
+++ b/verigraph/src/main/webapp/json/cache.json
@@ -0,0 +1,11 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Cache",
+    "description": "Polito Cache",
+    "type": "array",
+    "items": {
+        "type": "string"
+    },
+    "minItems": 0,
+    "uniqueItems": true
+}
\ No newline at end of file
diff --git a/verigraph/src/main/webapp/json/database.json b/verigraph/src/main/webapp/json/database.json
new file mode 100644
index 0000000..5b02a50
--- /dev/null
+++ b/verigraph/src/main/webapp/json/database.json
@@ -0,0 +1,5 @@
+[
+
+
+
+]
diff --git a/verigraph/src/main/webapp/json/dpi.json b/verigraph/src/main/webapp/json/dpi.json
new file mode 100644
index 0000000..6e4dd6f
--- /dev/null
+++ b/verigraph/src/main/webapp/json/dpi.json
@@ -0,0 +1,11 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Dpi",
+    "description": "Polito IDS",
+    "type": "array",
+    "items": {
+        "type": "string"
+    },
+    "minItems": 0,
+    "uniqueItems": true
+}
\ No newline at end of file
diff --git a/verigraph/src/main/webapp/json/endhost.json b/verigraph/src/main/webapp/json/endhost.json
new file mode 100644
index 0000000..37c8881
--- /dev/null
+++ b/verigraph/src/main/webapp/json/endhost.json
@@ -0,0 +1,42 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Endhost",
+    "description": "Polito Endhost",
+    "type": "array",
+    "items": {
+        "type": "object",
+        "properties": {
+            "body": {
+                "description": "HTTP body",
+                "type": "string"
+            },
+            "sequence": {
+                "description": "Sequence number",
+                "type": "integer"
+            },
+            "protocol": {
+                "description": "Protocol",
+                "type": "string",
+                "enum": ["HTTP_REQUEST", "HTTP_RESPONSE", "POP3_REQUEST", "POP3_RESPONSE"]
+            },
+            "email_from": {
+                "description": "E-mail sender",
+                "type": "string"
+            },
+            "url": {
+                "description": "URL",
+                "type": "string"
+            },
+            "options": {
+                "description": "Options",
+                "type": "string"
+            },
+            "destination": {
+                "description": "Destination node",
+                "type": "string"
+            }
+        },
+        "additionalProperties": false
+    },
+    "maxItems": 1
+}
\ No newline at end of file
diff --git a/verigraph/src/main/webapp/json/endpoint.json b/verigraph/src/main/webapp/json/endpoint.json
new file mode 100644
index 0000000..1e6a521
--- /dev/null
+++ b/verigraph/src/main/webapp/json/endpoint.json
@@ -0,0 +1,9 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Endpoint",
+    "description": "Polito Endpoint",
+    "type": "array",
+    "minItems": 0,
+    "maxItems":0,
+    "uniqueItems": true
+}
\ No newline at end of file
diff --git a/verigraph/src/main/webapp/json/fieldmodifier.json b/verigraph/src/main/webapp/json/fieldmodifier.json
new file mode 100644
index 0000000..8be9419
--- /dev/null
+++ b/verigraph/src/main/webapp/json/fieldmodifier.json
@@ -0,0 +1,12 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Field Modifier",
+    "description": "Polito Field Modifier",
+    "type": "array",
+    "items": {
+        "type": "object"
+    },
+    "minItems": 0,
+    "maxItems":0,
+    "uniqueItems": true
+}
\ No newline at end of file
diff --git a/verigraph/src/main/webapp/json/firewall.json b/verigraph/src/main/webapp/json/firewall.json
new file mode 100644
index 0000000..01ec63f
--- /dev/null
+++ b/verigraph/src/main/webapp/json/firewall.json
@@ -0,0 +1,11 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Firewall",
+    "description": "Polito Firewall",
+    "type": "array",
+    "items": {
+        "type": "object"
+    },
+    "minItems": 0,
+    "uniqueItems": true
+}
\ No newline at end of file
diff --git a/verigraph/src/main/webapp/json/mailclient.json b/verigraph/src/main/webapp/json/mailclient.json
new file mode 100644
index 0000000..cacfd5f
--- /dev/null
+++ b/verigraph/src/main/webapp/json/mailclient.json
@@ -0,0 +1,22 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Mail Client",
+    "description": "Polito Mail Client",
+    "type": "array",
+    "items": {
+        "type": "object",
+        "properties": {
+            "mailserver": {
+                "description": "Mail server name",
+                "type": "string"
+            }
+        },
+        "additionalProperties": false,
+        "required": [
+            "mailserver"
+        ]
+    },
+    "minItems": 1,
+    "maxItems": 1,
+    "uniqueItems": true
+}
\ No newline at end of file
diff --git a/verigraph/src/main/webapp/json/mailserver.json b/verigraph/src/main/webapp/json/mailserver.json
new file mode 100644
index 0000000..974b560
--- /dev/null
+++ b/verigraph/src/main/webapp/json/mailserver.json
@@ -0,0 +1,12 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Mail Server",
+    "description": "Polito Mail Server",
+    "type": "array",
+    "items": {
+        "type": "object"
+    },
+    "minItems": 0,
+    "maxItems": 0,
+    "uniqueItems": true
+}
\ No newline at end of file
diff --git a/verigraph/src/main/webapp/json/nat.json b/verigraph/src/main/webapp/json/nat.json
new file mode 100644
index 0000000..f2b973a
--- /dev/null
+++ b/verigraph/src/main/webapp/json/nat.json
@@ -0,0 +1,11 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Nat",
+    "description": "Polito Nat",
+    "type": "array",
+    "items": {
+        "type": "string"
+    },
+    "minItems": 0,
+    "uniqueItems": true
+}
\ No newline at end of file
diff --git a/verigraph/src/main/webapp/json/vpnaccess.json b/verigraph/src/main/webapp/json/vpnaccess.json
new file mode 100644
index 0000000..907118d
--- /dev/null
+++ b/verigraph/src/main/webapp/json/vpnaccess.json
@@ -0,0 +1,22 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Vpn Access",
+    "description": "Polito Vpn Access",
+    "type": "array",
+    "items": {
+        "type": "object",
+        "properties": {
+            "vpnexit": {
+                "description": "Vpn Exit",
+                "type": "string"
+            }
+        },
+        "additionalProperties": false,
+        "required": [
+            "vpnexit"
+        ]
+    },
+    "minItems": 1,
+    "maxItems": 1,
+    "uniqueItems": true
+}
\ No newline at end of file
diff --git a/verigraph/src/main/webapp/json/vpnexit.json b/verigraph/src/main/webapp/json/vpnexit.json
new file mode 100644
index 0000000..c80a138
--- /dev/null
+++ b/verigraph/src/main/webapp/json/vpnexit.json
@@ -0,0 +1,22 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Vpn Exit",
+    "description": "Polito Vpn Exit",
+    "type": "array",
+    "items": {
+        "type": "object",
+        "properties": {
+            "vpnaccess": {
+                "description": "Vpn Access",
+                "type": "string"
+            }
+        },
+        "additionalProperties": false,
+        "required": [
+            "vpnaccess"
+        ]
+    },
+    "minItems": 1,
+    "maxItems": 1,
+    "uniqueItems": true
+}
\ No newline at end of file
diff --git a/verigraph/src/main/webapp/json/webclient.json b/verigraph/src/main/webapp/json/webclient.json
new file mode 100644
index 0000000..dfbc55e
--- /dev/null
+++ b/verigraph/src/main/webapp/json/webclient.json
@@ -0,0 +1,22 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Web client",
+    "description": "Polito Web Client",
+    "type": "array",
+    "items": {
+        "type": "object",
+        "properties": {
+            "webserver": {
+                "description": "Web server name",
+                "type": "string"
+            }
+        },
+        "additionalProperties": false,
+        "required": [
+            "webserver"
+        ]
+    },
+    "minItems": 1,
+    "maxItems": 1,
+    "uniqueItems": true
+}
\ No newline at end of file
diff --git a/verigraph/src/main/webapp/json/webserver.json b/verigraph/src/main/webapp/json/webserver.json
new file mode 100644
index 0000000..5d7a1c4
--- /dev/null
+++ b/verigraph/src/main/webapp/json/webserver.json
@@ -0,0 +1,12 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Web Server",
+    "description": "Polito Web Server",
+    "type": "array",
+    "items": {
+        "type": "object"
+    },
+    "minItems": 0,
+    "maxItems": 0,
+    "uniqueItems": true
+}
\ No newline at end of file