Support TOSCA in verigraph (gRPC service)

JIRA: PARSER-179

Add TOSCA service description in gRPC server.
Add a TOSCA-based client to use the new functionality.
Add a JUnit class for testing gRPC service with TOSCA descriptor

Change-Id: Id3217a674f076714cd48e3b7e4236e7445d89cd2
Signed-off-by: serena.spinoso <serena.spinoso@polito.it>

4 files changed, 1304 insertions, 0 deletions

diff --git a/verigraph/schema/tosca/TOSCA-v1.0.xsd b/verigraph/schema/tosca/TOSCA-v1.0.xsd
new file mode 100644
index 0000000..ebfcaa6
--- /dev/null
+++ b/verigraph/schema/tosca/TOSCA-v1.0.xsd
@@ -0,0 +1,790 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+    Topology and Orchestration Specification for Cloud Applications Version 1.0
+    OASIS Standard
+    25 November 2013
+    Copyright (c) OASIS Open 2013. All rights reserved.
+    Source: http://docs.oasis-open.org/tosca/TOSCA/v1.0/os/schemas/
+-->
+<xs:schema targetNamespace="http://docs.oasis-open.org/tosca/ns/2011/12" elementFormDefault="qualified" attributeFormDefault="unqualified" xmlns="http://docs.oasis-open.org/tosca/ns/2011/12" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+ <xs:import namespace="http://www.w3.org/XML/1998/namespace" schemaLocation="http://www.w3.org/2001/xml.xsd"/>
+ <xs:element name="documentation" type="tDocumentation"/>
+ <xs:complexType name="tDocumentation" mixed="true">
+  <xs:sequence>
+   <xs:any processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
+  </xs:sequence>
+  <xs:attribute name="source" type="xs:anyURI"/>
+  <xs:attribute ref="xml:lang"/>
+ </xs:complexType>
+ <xs:complexType name="tExtensibleElements">
+  <xs:sequence>
+   <xs:element ref="documentation" minOccurs="0" maxOccurs="unbounded"/>
+   <xs:any namespace="##other" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
+  </xs:sequence>
+  <xs:anyAttribute namespace="##other" processContents="lax"/>
+ </xs:complexType>
+ <xs:complexType name="tImport">
+  <xs:complexContent>
+   <xs:extension base="tExtensibleElements">
+    <xs:attribute name="namespace" type="xs:anyURI"/>
+    <xs:attribute name="location" type="xs:anyURI"/>
+    <xs:attribute name="importType" type="importedURI" use="required"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:element name="Definitions">
+  <xs:complexType>
+   <xs:complexContent>
+    <xs:extension base="tDefinitions"/>
+   </xs:complexContent>
+  </xs:complexType>
+ </xs:element>
+ <xs:complexType name="tDefinitions">
+  <xs:complexContent>
+   <xs:extension base="tExtensibleElements">
+    <xs:sequence>
+     <xs:element name="Extensions" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="Extension" type="tExtension" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+     <xs:element name="Import" type="tImport" minOccurs="0" maxOccurs="unbounded"/>
+     <xs:element name="Types" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:any namespace="##other" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+     <xs:choice maxOccurs="unbounded">
+      <xs:element name="ServiceTemplate" type="tServiceTemplate"/>
+      <xs:element name="NodeType" type="tNodeType"/>
+      <xs:element name="NodeTypeImplementation" type="tNodeTypeImplementation"/>
+      <xs:element name="RelationshipType" type="tRelationshipType"/>
+      <xs:element name="RelationshipTypeImplementation" type="tRelationshipTypeImplementation"/>
+      <xs:element name="RequirementType" type="tRequirementType"/>
+      <xs:element name="CapabilityType" type="tCapabilityType"/>
+      <xs:element name="ArtifactType" type="tArtifactType"/>
+      <xs:element name="ArtifactTemplate" type="tArtifactTemplate"/>
+      <xs:element name="PolicyType" type="tPolicyType"/>
+      <xs:element name="PolicyTemplate" type="tPolicyTemplate"/>
+     </xs:choice>
+    </xs:sequence>
+    <xs:attribute name="id" type="xs:ID" use="required"/>
+    <xs:attribute name="name" type="xs:string" use="optional"/>
+    <xs:attribute name="targetNamespace" type="xs:anyURI" use="required"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tServiceTemplate">
+  <xs:complexContent>
+   <xs:extension base="tExtensibleElements">
+    <xs:sequence>
+     <xs:element name="Tags" type="tTags" minOccurs="0"/>
+     <xs:element name="BoundaryDefinitions" type="tBoundaryDefinitions" minOccurs="0"/>
+     <xs:element name="TopologyTemplate" type="tTopologyTemplate"/>
+     <xs:element name="Plans" type="tPlans" minOccurs="0"/>
+    </xs:sequence>
+    <xs:attribute name="id" type="xs:ID" use="required"/>
+    <xs:attribute name="name" type="xs:string" use="optional"/>
+    <xs:attribute name="targetNamespace" type="xs:anyURI"/>
+    <xs:attribute name="substitutableNodeType" type="xs:QName" use="optional"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tTags">
+  <xs:sequence>
+   <xs:element name="Tag" type="tTag" maxOccurs="unbounded"/>
+  </xs:sequence>
+ </xs:complexType>
+ <xs:complexType name="tTag">
+  <xs:attribute name="name" type="xs:string" use="required"/>
+  <xs:attribute name="value" type="xs:string" use="required"/>
+ </xs:complexType>
+ <xs:complexType name="tBoundaryDefinitions">
+  <xs:sequence>
+   <xs:element name="Properties" minOccurs="0">
+    <xs:complexType>
+     <xs:sequence>
+      <xs:any namespace="##other"/>
+      <xs:element name="PropertyMappings" minOccurs="0">
+       <xs:complexType>
+        <xs:sequence>
+         <xs:element name="PropertyMapping" type="tPropertyMapping" maxOccurs="unbounded"/>
+        </xs:sequence>
+       </xs:complexType>
+      </xs:element>
+     </xs:sequence>
+    </xs:complexType>
+   </xs:element>
+   <xs:element name="PropertyConstraints" minOccurs="0">
+    <xs:complexType>
+     <xs:sequence>
+      <xs:element name="PropertyConstraint" type="tPropertyConstraint" maxOccurs="unbounded"/>
+     </xs:sequence>
+    </xs:complexType>
+   </xs:element>
+   <xs:element name="Requirements" minOccurs="0">
+    <xs:complexType>
+     <xs:sequence>
+      <xs:element name="Requirement" type="tRequirementRef" maxOccurs="unbounded"/>
+     </xs:sequence>
+    </xs:complexType>
+   </xs:element>
+   <xs:element name="Capabilities" minOccurs="0">
+    <xs:complexType>
+     <xs:sequence>
+      <xs:element name="Capability" type="tCapabilityRef" maxOccurs="unbounded"/>
+     </xs:sequence>
+    </xs:complexType>
+   </xs:element>
+   <xs:element name="Policies" minOccurs="0">
+    <xs:complexType>
+     <xs:sequence>
+      <xs:element name="Policy" type="tPolicy" maxOccurs="unbounded"/>
+     </xs:sequence>
+    </xs:complexType>
+   </xs:element>
+   <xs:element name="Interfaces" minOccurs="0">
+    <xs:complexType>
+     <xs:sequence>
+      <xs:element name="Interface" type="tExportedInterface" maxOccurs="unbounded"/>
+     </xs:sequence>
+    </xs:complexType>
+   </xs:element>
+  </xs:sequence>
+ </xs:complexType>
+ <xs:complexType name="tPropertyMapping">
+  <xs:attribute name="serviceTemplatePropertyRef" type="xs:string" use="required"/>
+  <xs:attribute name="targetObjectRef" type="xs:IDREF" use="required"/>
+  <xs:attribute name="targetPropertyRef" type="xs:string" use="required"/>
+ </xs:complexType>
+ <xs:complexType name="tRequirementRef">
+  <xs:attribute name="name" type="xs:string" use="optional"/>
+  <xs:attribute name="ref" type="xs:IDREF" use="required"/>
+ </xs:complexType>
+ <xs:complexType name="tCapabilityRef">
+  <xs:attribute name="name" type="xs:string" use="optional"/>
+  <xs:attribute name="ref" type="xs:IDREF" use="required"/>
+ </xs:complexType>
+ <xs:complexType name="tEntityType" abstract="true">
+  <xs:complexContent>
+   <xs:extension base="tExtensibleElements">
+    <xs:sequence>
+     <xs:element name="Tags" type="tTags" minOccurs="0"/>
+     <xs:element name="DerivedFrom" minOccurs="0">
+      <xs:complexType>
+       <xs:attribute name="typeRef" type="xs:QName" use="required"/>
+      </xs:complexType>
+     </xs:element>
+     <xs:element name="PropertiesDefinition" minOccurs="0">
+      <xs:complexType>
+       <xs:attribute name="element" type="xs:QName"/>
+       <xs:attribute name="type" type="xs:QName"/>
+      </xs:complexType>
+     </xs:element>
+    </xs:sequence>
+    <xs:attribute name="name" type="xs:NCName" use="required"/>
+    <xs:attribute name="abstract" type="tBoolean" default="no"/>
+    <xs:attribute name="final" type="tBoolean" default="no"/>
+    <xs:attribute name="targetNamespace" type="xs:anyURI" use="optional"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tEntityTemplate" abstract="true">
+  <xs:complexContent>
+   <xs:extension base="tExtensibleElements">
+    <xs:sequence>
+     <xs:element name="Properties" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:any namespace="##other" processContents="lax"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+     <xs:element name="PropertyConstraints" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="PropertyConstraint" type="tPropertyConstraint" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+    </xs:sequence>
+    <xs:attribute name="id" type="xs:ID" use="required"/>
+    <xs:attribute name="type" type="xs:QName" use="required"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tNodeTemplate">
+  <xs:complexContent>
+   <xs:extension base="tEntityTemplate">
+    <xs:sequence>
+     <xs:element name="Requirements" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="Requirement" type="tRequirement" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+     <xs:element name="Capabilities" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="Capability" type="tCapability" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+     <xs:element name="Policies" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="Policy" type="tPolicy" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+     <xs:element name="DeploymentArtifacts" type="tDeploymentArtifacts" minOccurs="0"/>
+    </xs:sequence>
+    <xs:attribute name="name" type="xs:string" use="optional"/>
+    <xs:attribute name="minInstances" type="xs:int" use="optional" default="1"/>
+    <xs:attribute name="maxInstances" use="optional" default="1">
+     <xs:simpleType>
+      <xs:union>
+       <xs:simpleType>
+        <xs:restriction base="xs:nonNegativeInteger">
+         <xs:pattern value="([1-9]+[0-9]*)"/>
+        </xs:restriction>
+       </xs:simpleType>
+       <xs:simpleType>
+        <xs:restriction base="xs:string">
+         <xs:enumeration value="unbounded"/>
+        </xs:restriction>
+       </xs:simpleType>
+      </xs:union>
+     </xs:simpleType>
+    </xs:attribute>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tTopologyTemplate">
+  <xs:complexContent>
+   <xs:extension base="tExtensibleElements">
+    <xs:choice maxOccurs="unbounded">
+     <xs:element name="NodeTemplate" type="tNodeTemplate"/>
+     <xs:element name="RelationshipTemplate" type="tRelationshipTemplate"/>
+    </xs:choice>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tRelationshipType">
+  <xs:complexContent>
+   <xs:extension base="tEntityType">
+    <xs:sequence>
+     <xs:element name="InstanceStates" type="tTopologyElementInstanceStates" minOccurs="0"/>
+     <xs:element name="SourceInterfaces" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="Interface" type="tInterface" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+     <xs:element name="TargetInterfaces" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="Interface" type="tInterface" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+     <xs:element name="ValidSource" minOccurs="0">
+      <xs:complexType>
+       <xs:attribute name="typeRef" type="xs:QName" use="required"/>
+      </xs:complexType>
+     </xs:element>
+     <xs:element name="ValidTarget" minOccurs="0">
+      <xs:complexType>
+       <xs:attribute name="typeRef" type="xs:QName" use="required"/>
+      </xs:complexType>
+     </xs:element>
+    </xs:sequence>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tRelationshipTypeImplementation">
+  <xs:complexContent>
+   <xs:extension base="tExtensibleElements">
+    <xs:sequence>
+     <xs:element name="Tags" type="tTags" minOccurs="0"/>
+     <xs:element name="DerivedFrom" minOccurs="0">
+      <xs:complexType>
+       <xs:attribute name="relationshipTypeImplementationRef" type="xs:QName" use="required"/>
+      </xs:complexType>
+     </xs:element>
+     <xs:element name="RequiredContainerFeatures" type="tRequiredContainerFeatures" minOccurs="0"/>
+     <xs:element name="ImplementationArtifacts" type="tImplementationArtifacts" minOccurs="0"/>
+    </xs:sequence>
+    <xs:attribute name="name" type="xs:NCName" use="required"/>
+    <xs:attribute name="targetNamespace" type="xs:anyURI" use="optional"/>
+    <xs:attribute name="relationshipType" type="xs:QName" use="required"/>
+    <xs:attribute name="abstract" type="tBoolean" use="optional" default="no"/>
+    <xs:attribute name="final" type="tBoolean" use="optional" default="no"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tRelationshipTemplate">
+  <xs:complexContent>
+   <xs:extension base="tEntityTemplate">
+    <xs:sequence>
+     <xs:element name="SourceElement">
+      <xs:complexType>
+       <xs:attribute name="ref" type="xs:IDREF" use="required"/>
+      </xs:complexType>
+     </xs:element>
+     <xs:element name="TargetElement">
+      <xs:complexType>
+       <xs:attribute name="ref" type="xs:IDREF" use="required"/>
+      </xs:complexType>
+     </xs:element>
+     <xs:element name="RelationshipConstraints" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="RelationshipConstraint" maxOccurs="unbounded">
+         <xs:complexType>
+          <xs:sequence>
+           <xs:any namespace="##other" processContents="lax" minOccurs="0"/>
+          </xs:sequence>
+          <xs:attribute name="constraintType" type="xs:anyURI" use="required"/>
+         </xs:complexType>
+        </xs:element>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+    </xs:sequence>
+    <xs:attribute name="name" type="xs:string" use="optional"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tNodeType">
+  <xs:complexContent>
+   <xs:extension base="tEntityType">
+    <xs:sequence>
+     <xs:element name="RequirementDefinitions" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="RequirementDefinition" type="tRequirementDefinition" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+     <xs:element name="CapabilityDefinitions" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="CapabilityDefinition" type="tCapabilityDefinition" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+     <xs:element name="InstanceStates" type="tTopologyElementInstanceStates" minOccurs="0"/>
+     <xs:element name="Interfaces" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="Interface" type="tInterface" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+    </xs:sequence>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tNodeTypeImplementation">
+  <xs:complexContent>
+   <xs:extension base="tExtensibleElements">
+    <xs:sequence>
+     <xs:element name="Tags" type="tTags" minOccurs="0"/>
+     <xs:element name="DerivedFrom" minOccurs="0">
+      <xs:complexType>
+       <xs:attribute name="nodeTypeImplementationRef" type="xs:QName" use="required"/>
+      </xs:complexType>
+     </xs:element>
+     <xs:element name="RequiredContainerFeatures" type="tRequiredContainerFeatures" minOccurs="0"/>
+     <xs:element name="ImplementationArtifacts" type="tImplementationArtifacts" minOccurs="0"/>
+     <xs:element name="DeploymentArtifacts" type="tDeploymentArtifacts" minOccurs="0"/>
+    </xs:sequence>
+    <xs:attribute name="name" type="xs:NCName" use="required"/>
+    <xs:attribute name="targetNamespace" type="xs:anyURI" use="optional"/>
+    <xs:attribute name="nodeType" type="xs:QName" use="required"/>
+    <xs:attribute name="abstract" type="tBoolean" use="optional" default="no"/>
+    <xs:attribute name="final" type="tBoolean" use="optional" default="no"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tRequirementType">
+  <xs:complexContent>
+   <xs:extension base="tEntityType">
+    <xs:attribute name="requiredCapabilityType" type="xs:QName" use="optional"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tRequirementDefinition">
+  <xs:complexContent>
+   <xs:extension base="tExtensibleElements">
+    <xs:sequence>
+     <xs:element name="Constraints" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="Constraint" type="tConstraint" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+    </xs:sequence>
+    <xs:attribute name="name" type="xs:string" use="required"/>
+    <xs:attribute name="requirementType" type="xs:QName" use="required"/>
+    <xs:attribute name="lowerBound" type="xs:int" use="optional" default="1"/>
+    <xs:attribute name="upperBound" use="optional" default="1">
+     <xs:simpleType>
+      <xs:union>
+       <xs:simpleType>
+        <xs:restriction base="xs:nonNegativeInteger">
+         <xs:pattern value="([1-9]+[0-9]*)"/>
+        </xs:restriction>
+       </xs:simpleType>
+       <xs:simpleType>
+        <xs:restriction base="xs:string">
+         <xs:enumeration value="unbounded"/>
+        </xs:restriction>
+       </xs:simpleType>
+      </xs:union>
+     </xs:simpleType>
+    </xs:attribute>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tRequirement">
+  <xs:complexContent>
+   <xs:extension base="tEntityTemplate">
+    <xs:attribute name="name" type="xs:string" use="required"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tCapabilityType">
+  <xs:complexContent>
+   <xs:extension base="tEntityType"/>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tCapabilityDefinition">
+  <xs:complexContent>
+   <xs:extension base="tExtensibleElements">
+    <xs:sequence>
+     <xs:element name="Constraints" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="Constraint" type="tConstraint" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+    </xs:sequence>
+    <xs:attribute name="name" type="xs:string" use="required"/>
+    <xs:attribute name="capabilityType" type="xs:QName" use="required"/>
+    <xs:attribute name="lowerBound" type="xs:int" use="optional" default="1"/>
+    <xs:attribute name="upperBound" use="optional" default="1">
+     <xs:simpleType>
+      <xs:union>
+       <xs:simpleType>
+        <xs:restriction base="xs:nonNegativeInteger">
+         <xs:pattern value="([1-9]+[0-9]*)"/>
+        </xs:restriction>
+       </xs:simpleType>
+       <xs:simpleType>
+        <xs:restriction base="xs:string">
+         <xs:enumeration value="unbounded"/>
+        </xs:restriction>
+       </xs:simpleType>
+      </xs:union>
+     </xs:simpleType>
+    </xs:attribute>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tCapability">
+  <xs:complexContent>
+   <xs:extension base="tEntityTemplate">
+    <xs:attribute name="name" type="xs:string" use="required"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tArtifactType">
+  <xs:complexContent>
+   <xs:extension base="tEntityType"/>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tArtifactTemplate">
+  <xs:complexContent>
+   <xs:extension base="tEntityTemplate">
+    <xs:sequence>
+     <xs:element name="ArtifactReferences" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="ArtifactReference" type="tArtifactReference" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+    </xs:sequence>
+    <xs:attribute name="name" type="xs:string" use="optional"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tDeploymentArtifacts">
+  <xs:sequence>
+   <xs:element name="DeploymentArtifact" type="tDeploymentArtifact" maxOccurs="unbounded"/>
+  </xs:sequence>
+ </xs:complexType>
+ <xs:complexType name="tDeploymentArtifact">
+  <xs:complexContent>
+   <xs:extension base="tExtensibleElements">
+    <xs:attribute name="name" type="xs:string" use="required"/>
+    <xs:attribute name="artifactType" type="xs:QName" use="required"/>
+    <xs:attribute name="artifactRef" type="xs:QName" use="optional"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tImplementationArtifacts">
+  <xs:sequence>
+   <xs:element name="ImplementationArtifact" maxOccurs="unbounded">
+    <xs:complexType>
+     <xs:complexContent>
+      <xs:extension base="tImplementationArtifact"/>
+     </xs:complexContent>
+    </xs:complexType>
+   </xs:element>
+  </xs:sequence>
+ </xs:complexType>
+ <xs:complexType name="tImplementationArtifact">
+  <xs:complexContent>
+   <xs:extension base="tExtensibleElements">
+    <xs:attribute name="interfaceName" type="xs:anyURI" use="optional"/>
+    <xs:attribute name="operationName" type="xs:NCName" use="optional"/>
+    <xs:attribute name="artifactType" type="xs:QName" use="required"/>
+    <xs:attribute name="artifactRef" type="xs:QName" use="optional"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tPlans">
+  <xs:sequence>
+   <xs:element name="Plan" type="tPlan" maxOccurs="unbounded"/>
+  </xs:sequence>
+  <xs:attribute name="targetNamespace" type="xs:anyURI" use="optional"/>
+ </xs:complexType>
+ <xs:complexType name="tPlan">
+  <xs:complexContent>
+   <xs:extension base="tExtensibleElements">
+    <xs:sequence>
+     <xs:element name="Precondition" type="tCondition" minOccurs="0"/>
+     <xs:element name="InputParameters" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="InputParameter" type="tParameter" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+     <xs:element name="OutputParameters" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="OutputParameter" type="tParameter" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+     <xs:choice>
+      <xs:element name="PlanModel">
+       <xs:complexType>
+        <xs:sequence>
+         <xs:any namespace="##other" processContents="lax"/>
+        </xs:sequence>
+       </xs:complexType>
+      </xs:element>
+      <xs:element name="PlanModelReference">
+       <xs:complexType>
+        <xs:attribute name="reference" type="xs:anyURI" use="required"/>
+       </xs:complexType>
+      </xs:element>
+     </xs:choice>
+    </xs:sequence>
+    <xs:attribute name="id" type="xs:ID" use="required"/>
+    <xs:attribute name="name" type="xs:string" use="optional"/>
+    <xs:attribute name="planType" type="xs:anyURI" use="required"/>
+    <xs:attribute name="planLanguage" type="xs:anyURI" use="required"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tPolicyType">
+  <xs:complexContent>
+   <xs:extension base="tEntityType">
+    <xs:sequence>
+     <xs:element name="AppliesTo" type="tAppliesTo" minOccurs="0"/>
+    </xs:sequence>
+    <xs:attribute name="policyLanguage" type="xs:anyURI" use="optional"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tPolicyTemplate">
+  <xs:complexContent>
+   <xs:extension base="tEntityTemplate">
+    <xs:attribute name="name" type="xs:string" use="optional"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tAppliesTo">
+  <xs:sequence>
+   <xs:element name="NodeTypeReference" maxOccurs="unbounded">
+    <xs:complexType>
+     <xs:attribute name="typeRef" type="xs:QName" use="required"/>
+    </xs:complexType>
+   </xs:element>
+  </xs:sequence>
+ </xs:complexType>
+ <xs:complexType name="tPolicy">
+  <xs:complexContent>
+   <xs:extension base="tExtensibleElements">
+    <xs:attribute name="name" type="xs:string" use="optional"/>
+    <xs:attribute name="policyType" type="xs:QName" use="required"/>
+    <xs:attribute name="policyRef" type="xs:QName" use="optional"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tConstraint">
+  <xs:sequence>
+   <xs:any namespace="##other" processContents="lax"/>
+  </xs:sequence>
+  <xs:attribute name="constraintType" type="xs:anyURI" use="required"/>
+ </xs:complexType>
+ <xs:complexType name="tPropertyConstraint">
+  <xs:complexContent>
+   <xs:extension base="tConstraint">
+    <xs:attribute name="property" type="xs:string" use="required"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tExtensions">
+  <xs:complexContent>
+   <xs:extension base="tExtensibleElements">
+    <xs:sequence>
+     <xs:element name="Extension" type="tExtension" maxOccurs="unbounded"/>
+    </xs:sequence>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tExtension">
+  <xs:complexContent>
+   <xs:extension base="tExtensibleElements">
+    <xs:attribute name="namespace" type="xs:anyURI" use="required"/>
+    <xs:attribute name="mustUnderstand" type="tBoolean" use="optional" default="yes"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tParameter">
+  <xs:attribute name="name" type="xs:string" use="required"/>
+  <xs:attribute name="type" type="xs:string" use="required"/>
+  <xs:attribute name="required" type="tBoolean" use="optional" default="yes"/>
+ </xs:complexType>
+ <xs:complexType name="tInterface">
+  <xs:sequence>
+   <xs:element name="Operation" type="tOperation" maxOccurs="unbounded"/>
+  </xs:sequence>
+  <xs:attribute name="name" type="xs:anyURI" use="required"/>
+ </xs:complexType>
+ <xs:complexType name="tExportedInterface">
+  <xs:sequence>
+   <xs:element name="Operation" type="tExportedOperation" maxOccurs="unbounded"/>
+  </xs:sequence>
+  <xs:attribute name="name" type="xs:anyURI" use="required"/>
+ </xs:complexType>
+ <xs:complexType name="tOperation">
+  <xs:complexContent>
+   <xs:extension base="tExtensibleElements">
+    <xs:sequence>
+     <xs:element name="InputParameters" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="InputParameter" type="tParameter" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+     <xs:element name="OutputParameters" minOccurs="0">
+      <xs:complexType>
+       <xs:sequence>
+        <xs:element name="OutputParameter" type="tParameter" maxOccurs="unbounded"/>
+       </xs:sequence>
+      </xs:complexType>
+     </xs:element>
+    </xs:sequence>
+    <xs:attribute name="name" type="xs:NCName" use="required"/>
+   </xs:extension>
+  </xs:complexContent>
+ </xs:complexType>
+ <xs:complexType name="tExportedOperation">
+  <xs:choice>
+   <xs:element name="NodeOperation">
+    <xs:complexType>
+     <xs:attribute name="nodeRef" type="xs:IDREF" use="required"/>
+     <xs:attribute name="interfaceName" type="xs:anyURI" use="required"/>
+     <xs:attribute name="operationName" type="xs:NCName" use="required"/>
+    </xs:complexType>
+   </xs:element>
+   <xs:element name="RelationshipOperation">
+    <xs:complexType>
+     <xs:attribute name="relationshipRef" type="xs:IDREF" use="required"/>
+     <xs:attribute name="interfaceName" type="xs:anyURI" use="required"/>
+     <xs:attribute name="operationName" type="xs:NCName" use="required"/>
+    </xs:complexType>
+   </xs:element>
+   <xs:element name="Plan">
+    <xs:complexType>
+     <xs:attribute name="planRef" type="xs:IDREF" use="required"/>
+    </xs:complexType>
+   </xs:element>
+  </xs:choice>
+  <xs:attribute name="name" type="xs:NCName" use="required"/>
+ </xs:complexType>
+ <xs:complexType name="tCondition">
+  <xs:sequence>
+   <xs:any processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
+  </xs:sequence>
+  <xs:attribute name="expressionLanguage" type="xs:anyURI" use="required"/>
+ </xs:complexType>
+ <xs:complexType name="tTopologyElementInstanceStates">
+  <xs:sequence>
+   <xs:element name="InstanceState" maxOccurs="unbounded">
+    <xs:complexType>
+     <xs:attribute name="state" type="xs:anyURI" use="required"/>
+    </xs:complexType>
+   </xs:element>
+  </xs:sequence>
+ </xs:complexType>
+ <xs:complexType name="tArtifactReference">
+  <xs:choice minOccurs="0" maxOccurs="unbounded">
+   <xs:element name="Include">
+    <xs:complexType>
+     <xs:attribute name="pattern" type="xs:string" use="required"/>
+    </xs:complexType>
+   </xs:element>
+   <xs:element name="Exclude">
+    <xs:complexType>
+     <xs:attribute name="pattern" type="xs:string" use="required"/>
+    </xs:complexType>
+   </xs:element>
+  </xs:choice>
+  <xs:attribute name="reference" type="xs:anyURI" use="required"/>
+ </xs:complexType>
+ <xs:complexType name="tRequiredContainerFeatures">
+  <xs:sequence>
+   <xs:element name="RequiredContainerFeature" type="tRequiredContainerFeature" maxOccurs="unbounded"/>
+  </xs:sequence>
+ </xs:complexType>
+ <xs:complexType name="tRequiredContainerFeature">
+  <xs:attribute name="feature" type="xs:anyURI" use="required"/>
+ </xs:complexType>
+ <xs:simpleType name="tBoolean">
+  <xs:restriction base="xs:string">
+   <xs:enumeration value="yes"/>
+   <xs:enumeration value="no"/>
+  </xs:restriction>
+ </xs:simpleType>
+ <xs:simpleType name="importedURI">
+  <xs:restriction base="xs:anyURI"/>
+ </xs:simpleType>
+</xs:schema>
diff --git a/verigraph/schema/tosca/ToscaTypes_XMLconfig.xsd b/verigraph/schema/tosca/ToscaTypes_XMLconfig.xsd
new file mode 100644
index 0000000..98751b4
--- /dev/null
+++ b/verigraph/schema/tosca/ToscaTypes_XMLconfig.xsd
@@ -0,0 +1,280 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright (c) 2018 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
+-->
+
+
+<xsd:schema  xmlns="http://docs.oasis-open.org/tosca/ns/2011/12/ToscaVerigraphDefinition"
+      xmlns:xsd="http://www.w3.org/2001/XMLSchema"
+      targetNamespace="http://docs.oasis-open.org/tosca/ns/2011/12/ToscaVerigraphDefinition">
+
+  <!-- Generic Configuration type, contains a single configuration element -->
+  <xsd:element name="Configuration">
+    <xsd:complexType>
+      <xsd:choice>
+        <xsd:element name="antispamConfiguration">
+          <xsd:complexType>
+            <xsd:sequence minOccurs="1" maxOccurs="unbounded">
+              <xsd:element name="source" type="xsd:string" />
+            </xsd:sequence>
+          </xsd:complexType>
+        </xsd:element>
+        <xsd:element name="cacheConfiguration">
+          <xsd:complexType>
+            <xsd:sequence minOccurs="1" maxOccurs="unbounded">
+              <xsd:element name="resource" type="xsd:string" />
+            </xsd:sequence>
+          </xsd:complexType>
+        </xsd:element>
+        <xsd:element name="dpiConfiguration">
+          <xsd:complexType>
+            <xsd:sequence minOccurs="1" maxOccurs="unbounded">
+              <xsd:element name="notAllowed" type="xsd:string" />
+            </xsd:sequence>
+          </xsd:complexType>
+        </xsd:element>
+        <xsd:element name="endhostConfiguration">
+          <xsd:complexType>
+            <xsd:attribute name="body" type="xsd:string" />
+            <xsd:attribute name="sequence" type="xsd:integer" />
+            <xsd:attribute name="protocol">
+            <xsd:simpleType>
+              <xsd:restriction base="xsd:string">
+                <xsd:enumeration value="HTTP_REQUEST" />
+                <xsd:enumeration value="HTTP_RESPONSE" />
+                <xsd:enumeration value="POP3_REQUEST" />
+                <xsd:enumeration value="POP3_RESPONSE" />
+              </xsd:restriction>
+            </xsd:simpleType>
+            </xsd:attribute>
+            <xsd:attribute name="email_from" type="xsd:string" />
+            <xsd:attribute name="url" type="xsd:string" />
+            <xsd:attribute name="options" type="xsd:string" />
+            <xsd:attribute name="destination" type="xsd:string" />
+          </xsd:complexType>
+        </xsd:element>
+        <xsd:element name="endpointConfiguration">
+          <xsd:complexType>
+            <xsd:sequence>
+              <xsd:element name="name" type="xsd:string" nillable="true" />
+            </xsd:sequence>
+          </xsd:complexType>
+        </xsd:element>
+        <xsd:element name="fieldmodifierConfiguration">
+          <xsd:complexType>
+            <xsd:sequence>
+              <xsd:element name="name" type="xsd:string" nillable="true" />
+            </xsd:sequence>
+          </xsd:complexType>
+        </xsd:element>
+        <xsd:element name="firewallConfiguration">
+          <xsd:complexType>
+            <xsd:sequence>
+              <xsd:element name="elements" maxOccurs="unbounded">
+                <xsd:complexType>
+                  <xsd:sequence>
+                    <xsd:element name="source" type="xsd:string" />
+                    <xsd:element name="destination" type="xsd:string" />
+                  </xsd:sequence>
+                </xsd:complexType>
+              </xsd:element>
+            </xsd:sequence>
+          </xsd:complexType>
+        </xsd:element>
+        <xsd:element name="mailclientConfiguration">
+          <xsd:complexType>
+            <xsd:attribute name="mailserver" type="xsd:string"
+              use="required" />
+          </xsd:complexType>
+        </xsd:element>
+        <xsd:element name="mailserverConfiguration">
+          <xsd:complexType>
+            <xsd:sequence>
+              <xsd:element name="name" type="xsd:string" nillable="true" />
+            </xsd:sequence>
+          </xsd:complexType>
+        </xsd:element>
+        <xsd:element name="natConfiguration">
+          <xsd:complexType>
+            <xsd:sequence minOccurs="1" maxOccurs="unbounded">
+              <xsd:element name="source" type="xsd:string" />
+            </xsd:sequence>
+          </xsd:complexType>
+        </xsd:element>
+        <xsd:element name="vpnaccessConfiguration">
+          <xsd:complexType>
+            <xsd:attribute name="vpnexit" type="xsd:string" use="required" />
+          </xsd:complexType>
+        </xsd:element>
+        <xsd:element name="vpnexitConfiguration">
+          <xsd:complexType>
+            <xsd:attribute name="vpnaccess" type="xsd:string"
+              use="required" />
+          </xsd:complexType>
+        </xsd:element>
+        <xsd:element name="webclientConfiguration">
+          <xsd:complexType>
+            <xsd:attribute name="nameWebServer" type="xsd:string"
+              use="required" />
+          </xsd:complexType>
+        </xsd:element>
+        <xsd:element name="webserverConfiguration">
+          <xsd:complexType>
+            <xsd:sequence>
+              <xsd:element name="name" type="xsd:string" nillable="true" />
+            </xsd:sequence>
+          </xsd:complexType>
+        </xsd:element>
+      </xsd:choice>
+      <xsd:attribute name="confID" type="xsd:string" />
+      <xsd:attribute name="confDescr" type="xsd:string" />
+    </xsd:complexType>
+  </xsd:element>
+
+
+   <!--   <xsd:element name="firewallConfiguration">
+        <xsd:complexType >
+            <xsd:sequence>
+                <xsd:element ref="elements" maxOccurs="unbounded" />
+            </xsd:sequence>
+        </xsd:complexType>
+    </xsd:element>
+    <xsd:element name="elements">
+        <xsd:complexType>
+            <xsd:sequence>
+                <xsd:element name="source" type="xsd:string" />
+                <xsd:element name="destination" type="xsd:string" />
+            </xsd:sequence>
+        </xsd:complexType>
+    </xsd:element>
+    <xsd:element name="endhostConfiguration">
+        <xsd:complexType>
+            <xsd:attribute name="body" type="xsd:string" />
+            <xsd:attribute name="sequence" type="xsd:integer" />
+            <xsd:attribute name="protocol" type="protocolTypes" />
+            <xsd:attribute name="email_from" type="xsd:string" />
+            <xsd:attribute name="url" type="xsd:string" />
+            <xsd:attribute name="options" type="xsd:string" />
+            <xsd:attribute name="destination" type="xsd:string" />
+        </xsd:complexType>
+    </xsd:element>
+    <xsd:element name="endpointConfiguration">
+        <xsd:complexType>
+            <xsd:sequence>
+                <xsd:element name="name" type="xsd:string"
+                    nillable="true" />
+            </xsd:sequence>
+        </xsd:complexType>
+    </xsd:element>
+  <xsd:element name="antispamConfiguration">
+        <xsd:complexType>
+            <xsd:sequence minOccurs="1" maxOccurs="unbounded">
+                <xsd:element name="source" type="xsd:string" />
+            </xsd:sequence>
+        </xsd:complexType>
+    </xsd:element>
+    <xsd:element name="cacheConfiguration">
+        <xsd:complexType>
+            <xsd:sequence minOccurs="1" maxOccurs="unbounded">
+                <xsd:element name="resource" type="xsd:string" />
+            </xsd:sequence>
+        </xsd:complexType>
+    </xsd:element>
+    <xsd:element name="dpiConfiguration">
+        <xsd:complexType>
+            <xsd:sequence minOccurs="1" maxOccurs="unbounded">
+                <xsd:element name="notAllowed" type="xsd:string" />
+            </xsd:sequence>
+        </xsd:complexType>
+    </xsd:element>
+    <xsd:element name="mailclientConfiguration">
+        <xsd:complexType>
+            <xsd:attribute name="mailserver" type="xsd:string"
+                use="required" />
+        </xsd:complexType>
+    </xsd:element>
+    <xsd:element name="mailserverConfiguration">
+        <xsd:complexType>
+            <xsd:sequence>
+                <xsd:element name="name" type="xsd:string"
+                    nillable="true" />
+            </xsd:sequence>
+        </xsd:complexType>
+    </xsd:element>
+    <xsd:element name="natConfiguration">
+        <xsd:complexType>
+            <xsd:sequence minOccurs="1" maxOccurs="unbounded">
+                <xsd:element name="source" type="xsd:string" />
+            </xsd:sequence>
+        </xsd:complexType>
+    </xsd:element>
+    <xsd:element name="vpnaccessConfiguration">
+        <xsd:complexType>
+            <xsd:attribute name="vpnexit" type="xsd:string"
+                use="required" />
+        </xsd:complexType>
+    </xsd:element>
+    <xsd:element name="vpnexitConfiguration">
+        <xsd:complexType>
+            <xsd:attribute name="vpnaccess" type="xsd:string"
+                use="required" />
+        </xsd:complexType>
+    </xsd:element>
+    <xsd:element name="webclientConfiguration">
+        <xsd:complexType>
+            <xsd:attribute name="nameWebServer" type="xsd:string"
+                use="required" />
+        </xsd:complexType>
+    </xsd:element>
+    <xsd:element name="webserverConfiguration">
+        <xsd:complexType>
+            <xsd:sequence>
+                <xsd:element name="name" type="xsd:string"
+                    nillable="true" />
+            </xsd:sequence>
+        </xsd:complexType>
+    </xsd:element>
+    <xsd:element name="fieldmodifierConfiguration">
+        <xsd:complexType>
+            <xsd:sequence>
+                <xsd:element name="name" type="xsd:string"
+                    nillable="true" />
+            </xsd:sequence>
+        </xsd:complexType>
+    </xsd:element>
+
+  <xsd:simpleType name="functionalTypes">
+        <xsd:restriction base="xsd:string">
+            <xsd:enumeration value="FIREWALL" />
+            <xsd:enumeration value="ENDHOST" />
+            <xsd:enumeration value="ENDPOINT" />
+            <xsd:enumeration value="ANTISPAM" />
+            <xsd:enumeration value="CACHE" />
+            <xsd:enumeration value="DPI" />
+            <xsd:enumeration value="MAILCLIENT" />
+            <xsd:enumeration value="MAILSERVER" />
+            <xsd:enumeration value="NAT" />
+            <xsd:enumeration value="VPNACCESS" />
+            <xsd:enumeration value="VPNEXIT" />
+            <xsd:enumeration value="WEBCLIENT" />
+            <xsd:enumeration value="WEBSERVER" />
+            <xsd:enumeration value="FIELDMODIFIER" />
+        </xsd:restriction>
+    </xsd:simpleType>
+    <xsd:simpleType name="protocolTypes">
+        <xsd:restriction base="xsd:string">
+            <xsd:enumeration value="HTTP_REQUEST" />
+            <xsd:enumeration value="HTTP_RESPONSE" />
+            <xsd:enumeration value="POP3_REQUEST" />
+            <xsd:enumeration value="POP3_RESPONSE" />
+        </xsd:restriction>
+    </xsd:simpleType>
+
+  -->
+
+</xsd:schema>
\ No newline at end of file
diff --git a/verigraph/schema/tosca/ToscaVerigraphDefinitions.xml b/verigraph/schema/tosca/ToscaVerigraphDefinitions.xml
new file mode 100644
index 0000000..4f49037
--- /dev/null
+++ b/verigraph/schema/tosca/ToscaVerigraphDefinitions.xml
@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright (c) 2018 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
+-->
+
+<Definitions id="Verigraph_Definitions" name="Verigraph Type Definition"
+  xmlns="http://docs.oasis-open.org/tosca/ns/2011/12"
+  targetNamespace="http://docs.oasis-open.org/tosca/ns/2011/12/ToscaVerigraphDefinition">
+
+  <import importType="http://www.w3.org/2001/XMLSchema"
+    namespace="http://docs.oasis-open.org/tosca/ns/2011/12/ToscaVerigraphDefinition"
+    location="./ToscaTypes_XMLconfig.xsd" />
+
+  <NodeType name="AntispamType">
+    <PropertiesDefinition element="Configuration" />
+  </NodeType>
+
+  <NodeType name="CacheType">
+    <PropertiesDefinition element="Configuration" />
+  </NodeType>
+
+  <NodeType name="DpiType">
+    <PropertiesDefinition element="Configuration" />
+  </NodeType>
+
+  <NodeType name="EndhostType">
+    <PropertiesDefinition element="Configuration" />
+  </NodeType>
+
+  <NodeType name="EndpointType">
+    <PropertiesDefinition element="Configuration" />
+  </NodeType>
+
+  <NodeType name="FieldModifierType">
+    <PropertiesDefinition element="Configuration" />
+  </NodeType>
+
+  <NodeType name="FirewallType">
+    <PropertiesDefinition element="Configuration" />
+  </NodeType>
+
+  <NodeType name="MailclientType">
+    <PropertiesDefinition element="Configuration" />
+  </NodeType>
+
+  <NodeType name="MailserverType">
+    <PropertiesDefinition element="Configuration" />
+  </NodeType>
+
+  <NodeType name="NatType">
+    <PropertiesDefinition element="Configuration" />
+  </NodeType>
+
+  <NodeType name="VpnAccessType">
+    <PropertiesDefinition element="Configuration" />
+  </NodeType>
+
+  <NodeType name="VpnExitType">
+    <PropertiesDefinition element="Configuration" />
+  </NodeType>
+
+  <NodeType name="WebclientType">
+    <PropertiesDefinition element="Configuration" />
+  </NodeType>
+
+  <NodeType name="WebserverType">
+    <PropertiesDefinition element="Configuration" />
+  </NodeType>
+
+  <RelationshipType name="linkedTo" />
+
+</Definitions>
\ No newline at end of file
diff --git a/verigraph/schema/tosca/yamlToscaDefinitions.yaml b/verigraph/schema/tosca/yamlToscaDefinitions.yaml
new file mode 100644
index 0000000..e72a5da
--- /dev/null
+++ b/verigraph/schema/tosca/yamlToscaDefinitions.yaml
@@ -0,0 +1,157 @@
+##############################################################################
+# Copyright (c) 2018 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
+##############################################################################
+
+#Tosca definitions for Verigraph extension in Tosca Yaml simple profile
+
+tosca_definitions_version: http://docs.oasis-open.org/tosca/ns/simple/yaml/1.0
+
+description: node type definitions exetending tosca types for support to Verigraph verification system
+
+node_types:
+  verigraph.types.Antispam:
+    derived_from: tosca.nodes.Root
+    description: verigraph Antispam node
+    properties:
+      sources:
+        type: list
+        entry_schema:
+          type: string
+
+  verigraph.types.Cache:
+    derived_from: tosca.nodes.Root
+    description: verigraph Cache node
+    properties:
+      resources:
+        type: list
+        entry_schema:
+          type: string
+
+  verigraph.types.Dpi:
+    derived_from: tosca.nodes.Root
+    description: verigraph Dpi node
+    properties:
+      notAllowedList:
+        type: list
+        entry_schema:
+          type: string
+
+  verigraph.types.Endhost:
+    derived_from: tosca.nodes.Root
+    description: verigraph endhost node
+    attributes:
+      body:
+        type: string
+      sequence:
+        type: integer
+      protocol:
+        type: string
+        constraints:
+          - valid_values: [ HTTP_REQUEST, HTTP_RESPONSE, POP3_REQUEST, POP3_RESOPONSE ]
+      email_from:
+        type: string
+      url:
+        type: string
+      options:
+        type: string
+      destination:
+        type: string
+
+  verigraph.types.Endpoint:
+    derived_from: tosca.nodes.Root
+    description: verigraph Endpoint node
+    properties:
+      names:
+        type: list
+        entry_schema:
+          type: string
+
+  verigraph.types.FieldModifier:
+    derived_from: tosca.nodes.Root
+    description: verigraph Field Modifier node
+    properties:
+      names:
+        type: list
+        entry_schema:
+          type: string
+
+  verigraph.types.Firewall:
+    derived_from: tosca.nodes.Root
+    description: verigraph Firewall node
+    properties:
+      elements:
+        type: map
+        entry_schema:
+          description: "source : destination" firewall mapping
+          type: string
+
+  verigraph.types.MailClient:
+    derived_from: tosca.nodes.Root
+    description: verigraph Mail Client node
+    attributes:
+      mailserver:
+        type: string
+
+  verigraph.types.MailServer:
+    derived_from: tosca.nodes.Root
+    descrtiption: verigraph Mail Server node
+    properties:
+      names:
+        type: list
+        entry_schema:
+          type: string
+
+  verigraph.types.Nat:
+    derived_from: tosca.nodes.Root
+    descrtiption: verigraph Nat node
+    properties:
+      sources:
+        type: list
+        entry_schema:
+          type: string
+
+  verigraph.types.VpnAccess:
+    deriver_from: tosca.nodes.Root
+    descrtiption: verigraph Vpn Access node
+    attributes:
+      vpnexit:
+        type: string
+
+  verigraph.types.VpnExit:
+    derived_from: tosca.nodes.Root
+    descrtiption: verigraph Vpn Exit node
+    attributes:
+      vpnaccess:
+        type: string
+
+  verigraph.types.WebClient:
+    derived_from: tosca.nodes.Root
+    descrtiption: verigraph web Client node
+    attributes:
+      nameWebServer:
+        type: string
+
+  verigraph.types.WebServer:
+    derived_from: tosca.nodes.Root
+    descrtiption: verigraph web Server node
+    properties:
+      names:
+        type: list
+        entry_schema:
+          type: string
+
+relationship_types:
+  verigraph.relationshipType.generic:
+    derived_from: tosca.relationships.Root
+    properties:
+      name:
+        type: string
+      source_id:
+        type: string
+      target_id:
+        type: string