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/*******************************************************************************
* 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();
}
}
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