etsi-nfv-vnf.yang

          description
            "Unique identifier of this VirtualStorageDesc in the
             VNFD.";
          reference
            "GS NFV IFA011: Section 7.1.9.4, Information elements 
             related to Virtual Storage.";
        }

        leaf type-of-storage {
          // Needed to be able to onboard images
          type enumeration {
            enum "root";
            enum "swap";
            enum "ephemeral";
          }
          mandatory true;
          description
            "Type of virtualised storage resource (e.g. volume, 
             object).";
          reference
            "GS NFV IFA011: Section 7.1.9.4, Information elements 
             related to Virtual Storage.";
        }
        leaf size-of-storage {
          type uint64;
          units "GB";
          mandatory true;
          description
            "Size of virtualised storage resource (e.g. size of
             volume, in GB)";
          reference
            "GS NFV IFA011: Section 7.1.9.4, Information elements 
             related to Virtual Storage.";
        }
        list vdu-storage-requirements {
          key "key";
          leaf key {
            type string;
          }
          leaf value {
            type string;
          }
          description
            "Array of key-value pairs that articulate the storage
             deployment requirements.";
          reference
            "GS NFV IFA011: Section 7.1.9.4.2, VirtualStorageDesc
             information element.";
        }
        leaf rdma-enabled {
          type boolean;
          description
            "Indicate if the storage support RDMA.";
          reference
            "GS NFV IFA011: Section 7.1.9.4, Information elements 
             related to Virtual Storage.";
        }
        leaf sw-image-desc {
          type leafref {
            path "../nfv:vdu/nfv:sw-image-desc/nfv:sw-image-desc/" +
                 "nfv:id";
          }
          description
            "Software image to be loaded on the VirtualStorage
             resource created based on this VirtualStorageDesc.";
          reference
            "GS NFV IFA011: Section 7.1.9.4, Information elements
             related to Virtual Storage.";
        }
        /*
          swImageDesc
          The specification prescribes a reference to a VDU's
          software image the VDU already has information of which 
          image it uses, so this would unnecessarily complicate things.
        */
      }
      
      list int-virtual-link-desc {
        key "id";
        description
          "Represents the type of network connectivity mandated by the
           VNF provider between two or more CPs which includes at
           least one internal CP.";
        reference
          "GS NFV IFA011: Section 7.1.2, Vnfd information element.";
        leaf id {
          type string;
          description
            "Unique identifier of this internal VLD in VNFD.";
          reference
            "GS NFV IFA011: Section 7.1.7, Information elements 
             related to the VLD.";
        }

        list desc-flavor {
          key "id";
          description
            "Describes a specific flavour of the VL with specific
             bitrate requirements.";
          reference
            "GS NFV IFA011: Section 7.1.7, Information elements
             related to the VLD.";

          leaf id {
            type string;
            description
              "Identifies a flavour within a VnfVirtualLinkDesc.";
            reference
              "GS NFV IFA011: Section 7.1.8.5, VirtualLinkDescFlavor
               information element.";
          }
          container qos {
            description
              "QoS of the VL.";
            reference
              "GS NFV IFA011: Section 7.1.8.5, VirtualLinkDescFlavor
               information element.";

            leaf latency {
              type uint32;
              units "ms";
              mandatory true;
              description
                "Specifies the maximum latency in ms.";
              reference
                "GS NFV IFA011: Section 7.1.8.10, QoS information
                 element.";
            }

            leaf packet-delay-variation {
              type uint32;
              units "ms";
              mandatory true;
              description
                "Specifies the maximum jitter in ms.";
              reference
                "GS NFV IFA011: Section 7.1.8.10, QoS information
                 element.";
            }

            leaf packet-loss-ratio {
              type decimal64 {
                fraction-digits "2";
                range "0..1.00";
              }
              description
                "Specifies the maximum packet loss ratio.";
              reference
                "GS NFV IFA011: Section 7.1.8.10, QoS information
                 element.";
            }
          }
        }
        
        uses connectivity-type;
        
        leaf-list test-access {
          type string;
          description
            "Specifies test access facilities expected on the VL
             (e.g. none, passive monitoring, or active (intrusive)
             loopbacks at endpoints.";
          reference
            "GS NFV IFA011: Section 7.1.7.2, VnfVirtualLinkDesc
             information element.";
        }
        leaf description {
          type string;
          description
            "Provides human-readable information on the purpose of
             the VL (e.g. control plane traffic).";
          reference
            "GS NFV IFA011: Section 7.1.7.2, VnfVirtualLinkDesc
             information element.";
        }
        list monitoring-parameter {
          key "id";
          leaf id {
            type string;
            description
              "Unique identifier of the monitoring parameter.";
          reference
            "GS NFV IFA011: Section 7.1.11.3, MonitoringParameter
             information element.";
          }
          uses monitoring-parameter;
        }
      }
      
      list ext-cpd {
        key "id";
        min-elements 1;

        description
          "Describes an external interface exposed by this VNF enabling
           connection with a Virual Link";
        reference
          "GS NFV IFA011: Section 7.1.2, VNFD information element.";
        
        leaf virtual-link-desc {
          description
            "Reference to the internal Virtual Link Descriptor (VLD)
             to which CPs instantiated from this external CP
             Descriptor (CPD) connect. Either intVirtualLinkDesc or
             intCpd shall be present.";
          type leafref {
            path "../../nfv:virtual-link-desc/nfv:id";
          }
        }
        /*
          intCpd
          we reference from the VDU's CP to the ext-CP instead of the
          ext-CP to the VDU's CP.
        */
        uses virtual-network-interface-requirements;
        uses cpd;
      }

      list deployment-flavor {
        must "nfv:default-instantiation-level or " +
             "count(nfv:instantiation-level) = 1";
        key "id";
        min-elements 1;
        description
          "Describes a specific Deployment Flavour (DF) of a VNF with
           specific requirements for capacity and performance.";
        reference
          "GS NFV IFA011: Section 7.1.2, VNFD information element.";
        leaf id {
          type string;
          description
            "Identifier of this DF within the VNFD.";
          reference
            "GS NFV IFA011: Section 7.1.8, Information elements
             to the DeploymentFlavor.";
        }
        leaf description {
          type string;
          description
            "Human readable description of the deployment flavor";
          reference
            "GS NFV IFA011: Section 7.1.8, Information elements
             to the DeploymentFlavor.";
        }
        list vdu-profile {
          key "id";
          min-elements 1;
          description
            "The Vduprofile describes additional instantiation data for
             a given VDU used in a deployment flavour.";
          reference
            "GS NFV IFA011: Section 7.1.8, Information elements
             to the DeploymentFlavor.";
          leaf id {
            type leafref {
              path "../../../nfv:vdu/nfv:id";
            }
            reference
              "GS NFV IFA011: Section 7.1.8.3, VduProfile information
               element.";
          }
          leaf min-number-of-instances {
            type uint16;
            mandatory true;
            description
              "Minimum number of instances of the VNFC based on this
               VDU that is permitted to exist for this flavour.";
            reference
              "GS NFV IFA011: Section 7.1.8.3, VduProfile information
               element.";
          }
          leaf max-number-of-instances {
            type uint16;
            mandatory true;
            must ". >= ../nfv:min-number-of-instances";
            reference
              "GS NFV IFA011: Section 7.1.8.3, VduProfile information
               element.";
          }
          uses local-affinity-or-anti-affinity-rule;
          list affinity-or-anti-affinity-group {
            key "id";
            description
              "Identifier(s) of the affinity or anti-affinity
               group(s) the VDU belongs to.";
            reference
              "GS NFV IFA011: Section 7.1.8.3, VduProfile information
               element.";
            leaf id {
              type leafref {
                path "../../../" +
                     "nfv:affinity-or-anti-affinity-group/" +
                     "nfv:id";
              }
              description
                "Identifies an affinity or anti-affinity group to
                  which the affinity or anti-affinity rule applies.";
              reference
                "GS NFV IFA011: Section 7.1.8.12, AffinityOrAntiAffinity
                 information element.";
            }
            leaf type {
              type enumeration {
                enum affinity;
                enum anti-affinity;
              }
              description
                "Specifies whether the rule is an affinity rule or an
                 anti-affinity rule.";
              reference
                "GS NFV IFA011: Section 7.1.8.12, AffinityOrAntiAffinity
                 information element.";
            }
            leaf scope {
              type affinity-scope;
              description
                "Specifies the scope of the rule, possible values are
                 'NFVI-PoP', 'Zone', 'ZoneGroup', 'NFVI-node'";
              reference
                "GS NFV IFA011: Section 7.1.8.12, AffinityOrAntiAffinity
                 information element.";
            }
          }
        }
        list virtual-link-profile {
          key "id flavor";
          description
            "Defines the internal VLD along with additional data which
             is used in this DF.";
          reference
            "GS NFV IFA011: Section 7.1.8.2, VnfDf information
             element.";

          leaf id {
            type leafref {
              path "../../../nfv:virtual-link-desc/nfv:id";
            }
            description
              "Uniquely identifies a Vnf VLD.";
            reference
              "GS NFV IFA011: Section 7.1.8.4, VirtualLinkProfile
               information element.";
          }
          leaf flavor {
            type leafref {
              path "deref(../nfv:virtual-link-desc)" +
                   "/../nfv:descriptor-flavor/nfv:id";
            }
            description
              "Identifies a flavour within the VnfVirtualLinkDesc.";
            reference
              "GS NFV IFA011: Section 7.1.8.4, VirtualLinkProfile
               information element.";
          }
          uses local-affinity-or-anti-affinity-rule;
          list affinity-or-anti-affinity-group {
            key "id";
            leaf id {
              type leafref {
                path "../../../" +
                     "nfv:affinity-or-anti-affinity-group/" +
                     "nfv:id";
              }
            }
            description
              "Identifier(s) of the affinity or anti-affinity
               group(s) the VnfVirtualLinkDesc belongs to.";
            reference
              "GS NFV IFA011: Section 7.1.8.4, VirtualLinkProfile
               information element.";
          }
        }
        list instantiation-level {
          key "id";
          min-elements 1;
          description
            "Describes the various levels of resources that can be
             used to instantiate the VNF using this flavour.
             Examples: Small, Medium, Large. If there is only one
             'instantiationLevel' entry, it shall be treated as the
             default instantiation level for this DF.

             The InstantiationLevel information element describes a
             given level of resources to be instantiated within a
             deployment flavour in term of the number of VNFC instances
             to be created from each VDU.
             All the VDUs referenced in the level shall be part of the
             corresponding deployment flavour and their number shall
             be within the range (min/max) for this deployment flavour.";
          reference
            "GS NFV IFA011: Section 7.1.8.2 VnfDf information element";
          leaf id {
            type string;
            description
              "Uniquely identifies a level with the DF.";
            reference
              "GS NFV IFA011: Section 7.1.8.7 InstantiationLevel
               information element";
          }
          leaf description {
            type string;
            description
              "Human readable description of the instantiation level";
            reference
              "GS NFV IFA011: Section 7.1.8.7 InstantiationLevel
               information element";
          }
          list vdu-level {
            key "id";
            min-elements 1;
            description
              "Sets the number of instances for the VDU in this
               instantiation level.";
            reference
              "GS NFV IFA011: Section 7.1.8.7 InstantiationLevel
               information element";
            leaf id {
              type leafref {
                path "../../../../nfv:vdu/nfv:id";
              }
              description
                "Uniquely identifies a VDU.";
              reference
                "GS NFV IFA011: Section 7.1.8.9 VduLevel information
                 element";
            }
            leaf number-of-instances {
              type uint16;
              must ". <= ../../../" +
                   "nfv:vdu-profile[vdu=current()/../" +
                   "nfv:vdu]/nfv:max-number-of-instances";
              must ". >= ../../../" +
                   "nfv:vdu-profile[vdu=current()/../" +
                   "nfv:vdu]/nfv:min-number-of-instances";
              mandatory true;
              description
                "Number of instances of VNFC based on this VDU to
                 deploy for this level.";
              reference
                "GS NFV IFA011: Section 7.1.8.9 VduLevel information
                 element";
            }
          }
          list scaling-info {
            key "id";
            description
              "The InstantiationLevel information element describes a
               given level of resources to be instantiated within a
               DF in term of the number of VNFC instances to be 
               created from each VDU.";
            reference
              "GS NFV IFA011: Section 7.1.8.7 InstantiationLevel
               information element";
            leaf id {
              type leafref {
                path "../../../nfv:scaling-aspect/nfv:id";
              }
              description
                "Identifier of the scaling aspect.";
              reference
                "GS NFV IFA011: Section 7.1.8.8 ScaleInfo information
                 element";
            }
            leaf scale-level {
              type uint32;
              description
                "The scale level, greater than or equal to 0.";
              reference
                "GS NFV IFA011: Section 7.1.8.8 ScaleInfo information
                 element";
            }
          }
        }
        leaf default-instantiation-level {
          type leafref {
            path "../nfv:instantiation-level/nfv:id";
          }
          description
            "This attribute references the 'instantiationLevel'
             entry which defines the default instantiation level for
             this DF. It shall be present if there are multiple
             'instantiationLevel' entries.";
          reference
            "GS NFV IFA011: Section 7.1.8.2 VnfDf information
                 element";
        }
        leaf-list supported-operation {
          type identityref {
            base supported-operation;
          }
          description
            "Indicates which operations are available for this DF via
             the VNF LCM interface. Instantiate VNF, Query VNF and
             Terminate VNF are supported in all DF and therefore
             need not be included in this list.";
          reference
            "GS NFV IFA011: Section 7.1.8.2 VnfDf information
                 element";
        }
        container lcm-operations-configuration {
          description
            "This information element is a container for all
             attributes that affect the invocation of the VNF
             Lifecycle Management operations, structured by
             operation.";
          reference
            "GS NFV IFA011: Section 7.1.8.2 VnfDf information
             element";
          
          leaf instantiate-vnf-op-config {
            type string;
            description
              "Configuration parameters for the InstantiateVnf
               operation.";
            reference
              "GS NFV IFA011: Section 7.1.5.2
               VnfLcmOperationsConfiguration information element";
          }
          container scale-vnf-op-config {
            description
              "Configuration parameters for the ScaleVnf operation.";
            reference
              "GS NFV IFA011: Section 7.1.5.2
               VnfLcmOperationsConfiguration information element";

            list parameter {
              key "key";
              leaf key {
                type string;
              }
              leaf value {
                type string;
              }
              description
                "VNF-specific parameter to be passed when invoking
                 the ScaleVnf operation.";
              reference
                "GS NFV IFA011: Section 7.1.5.4 ScaleVnfOpConfig
                 information element";
            }
            leaf scaling-by-more-than-one-step-supported {
              type boolean;
              default false;
              description
                "Signals whether passing a value larger than one in
                 the numScalingSteps parameter of the ScaleVnf
                 operation is supported by this VNF.
                 Default is FALSE, i.e. 'not supported'.";
              reference
                "GS NFV IFA011: Section 7.1.5.4
                 ScaleVnfOpConfig information element";
            }
          }
          container scale-vnf-to-level-op-config {
            description
              "This information element defines attributes that 
               affect the invocation of the ScaleVnfToLevel
               operation.";
            reference
              "GS NFV IFA011: Section 7.1.5.2
               VnfLcmOperationsConfiguration information element";

            list parameter {
              key "key";
              leaf key {
                type string;
              }
              leaf value {
                type string;
              }
              description
                "VNF-specific parameter to be passed when invoking
                 the ScaleVnfToLevel operation.";
              reference
                "GS NFV IFA011: Section 7.1.5.5
                 ScaleVnfToLevelOpConfig information element";
            }
            leaf arbitrary-target-levels-supported {
              type boolean;
              description
                "Signals whether scaling according to the parameter
                 'scaleInfo' is supported by this VNF.";
              reference
                "GS NFV IFA011: Section 7.1.5.5
                 ScaleVnfToLevelOpConfig information element";
            }
          }
          container heal-vnf-op-config {
            description
              "This information element defines attributes that
               affect the invocation of the HealVnf operation.";
            reference
              "GS NFV IFA011: Section 7.1.5.2
               VnfLcmOperationsConfiguration information element";

            leaf parameter {
              type string;
              description
                "VNF-specific parameter to be passed when invoking
                 the HealVnf operation.";
              reference
                "GS NFV IFA011: Section 7.1.5.6 HealVnfOpConfig
                 information element";
            }
            leaf cause {
              type string;
              description
                "Supported 'cause' parameter values.";
              reference
                "GS NFV IFA011: Section 7.1.5.6 HealVnfOpConfig
                 information element";
            }
          }
          container terminate-vnf-op-config {
            description
              "This information element defines attributes that 
               affect the invocation of the TerminateVnf operation.";
            reference
              "GS NFV IFA011: Section 7.1.5.2
               VnfLcmOperationsConfiguration information element";
            leaf min-graceful-termination {
              type yang:timeticks;
              description
                "Minimum timeout value for graceful termination of
                 a VNF instance.";
              reference
                "GS NFV IFA011: Section 7.1.5.7
                 TerminateVnfOpConfig information element";
            }
            leaf max-recommended-graceful-termination {
              type yang:timeticks;
              description
                "Maximum recommended timeout value that can be needed
                 to gracefully terminate a VNF instance of a
                 particular type under certain conditions, such as
                 maximum load condition. This is provided by VNF
                 provider as information for the operator
                 facilitating the selection of optimal timeout value.
                 This value is not used as constraint.";
              reference
                "GS NFV IFA011: Section 7.1.5.7
                 TerminateVnfOpConfig information element";
            }
          }
          container operate-vnf-op-config {
            description
              "This information element defines attributes that 
               affect the invocation of the OperateVnf operation.";
            reference
              "GS NFV IFA011: Section 7.1.5.2
               VnfLcmOperationsConfiguration information element";

            leaf min-graceful-stop-timeout {
              type yang:timeticks;
              description
                "Minimum timeout value for graceful stop of a VNF
                 instance.";
              reference
                "GS NFV IFA011: Section 7.1.5.8
                 OperateVnfOpConfig information element";
            }
            leaf max-recommended-graceful-stop-timeout {
              type yang:timeticks;
              description
                "Maximum recommended timeout value that can be 
                 needed to gracefully stop a VNF instance of a
                 particular type under certain conditions, such as
                 maximum load condition. This is provided by VNF
                 provider as information for the operator facilitating
                 the selection of optimal timeout value. This value
                 is not used as constraint.";
              reference
                "GS NFV IFA011: Section 7.1.5.8
                 OperateVnfOpConfig information element";
            }
          }
        }
        list affinity-or-anti-affinity-group {
          key "id";
          description
            "The AffinityOrAntiAffinityGroup describes the affinity
             or anti-affinity relationship applicable between the
             virtualization containers to be created based on
             different VDUs, or between internal VLs to be created
             based on different VnfVirtualLinkDesc(s).

             Per VNF, the affinity/anti-affinity rules defined using
             this information element, using the
             LocalAffinityOrAntiAffinityRule information element, and
             using the placement constraints in the
             GrantLifecycleOperation as defined in ETSI GS NFV-IFA
             007 [i.3] should be conflict-free. In case of conflicts,
             the placement constraints in the
             GrantLifecycleOperation shall take precedence.";

          reference
            "GS NFV IFA011: Section 7.1.8.2 VnfDf information
             element";

          leaf id {
            type string;
            description
              "Identifies an affinity or anti-affinity group to which
               the affinity or anti-affinity rule applies.";
            reference
              "GS NFV IFA011: Section 7.1.8.12
               AffinityOrAntiAffinityGroup information element";
          }

          leaf type {
            mandatory true;
            type affinity-type;
            description
              "Specifies whether the rule is an affinity rule or an
               anti-affinity rule.";
            reference
              "GS NFV IFA011: Section 7.1.8.12
               AffinityOrAntiAffinityGroup information element";
          }

          leaf scope {
            mandatory true;
            type affinity-scope;
            description
              "Specifies the scope of the rule, possible values are
               'NFVI-PoP', 'Zone', 'ZoneGroup', 'NFVI-node'.";
            reference
              "GS NFV IFA011: Section 7.1.8.12
               AffinityOrAntiAffinityGroup information element";
          }
        }
        list monitoring-parameter {
          key "id";

          description
            "Defines the virtualised resources monitoring parameters
             on VNF level.";
          reference
            "GS NFV IFA011: Section 7.1.8.2 VnfDf information
             element";

          leaf id {
            type string;
            description
              "Unique identifier of the monitoring parameter.";
            reference
              "GS NFV IFA011: Section 7.1.11.3 MonitoringParameter
               information element";
          }
          uses monitoring-parameter;
        }

        list scaling-aspect {
          key "id";

          description
            "The scaling aspects supported by this DF of the VNF.
             scalingAspect shall be present if the VNF supports
             scaling.";
          reference
            "GS NFV IFA011: Section 7.1.8.2 VnfDf information
             element";

          leaf id {
            type string;
            description
              "Unique identifier of this aspect in the VNFD.";
            reference
              "GS NFV IFA011: Section 7.1.10.2 ScalingAspect
               information element";
          }
          leaf name {
            type string;
            description
              "Human readable name of the aspect.";
            reference
              "GS NFV IFA011: Section 7.1.10.2 ScalingAspect
               information element";
          }
          leaf description {
            type string;
            description
              "Human readable description of the aspect.";
            reference
              "GS NFV IFA011: Section 7.1.10.2 ScalingAspect
               information element";
          }
          leaf associated-group {
            type leafref {
              path "../../../nfv:element-group/nfv:id";
            }
            description
              "Reference to the group of Vnfd elements defining this
               aspect. If present, scaling for this aspect is limited
               to the elements of the group, but there is no
               assumption that all the elements of the groups will be
               increased at each step.";
            reference
              "GS NFV IFA011: Section 7.1.10.2 ScalingAspect
               information element";
          }
          leaf max-scale-level {
            type uint32 {
              range "1..max";
            }
            description
              "The maximum scaleLevel for total number of scaling
               steps that can be applied w.r.t. this aspect. The value
               of this attribute corresponds to the number of scaling
               steps can be applied to this aspect when scaling it
               from the minimum scale level (i.e. 0) to the maximum
               scale level defined by this attribute.";
            reference
              "GS NFV IFA011: Section 7.1.10.2 ScalingAspect
               information element";
          }
        }
      }

      container configurable-properties {
        description
          "Describes the configurable properties of the VNF
           (e.g. related to auto scaling and auto healing).";
        reference
          "GS NFV IFA011: Section 7.1.2 VNFD information element";

        leaf auto-scalable {
          type boolean;
          description
            "It permits to enable (TRUE) / disable (FALSE) the
             auto-scaling functionality.";
          reference
            "GS NFV IFA011: Section 7.1.12 VnfConfigurableProperties
             information element";
        }
        leaf auto-healable {
          type boolean;
          description
            "It permits to enable (TRUE) / disable (FALSE) the
             auto-healing functionality.";
          reference
            "GS NFV IFA011: Section 7.1.12 VnfConfigurableProperties
             information element";
        }
        leaf-list additional-configurable-property {
          type string;
          description
            "It provides VNF specific configurable properties that can
             be modified using the ModifyVnfConfiguration operation.";
          reference
            "GS NFV IFA011: Section 7.1.12 VnfConfigurableProperties
             information element";
        }
      }

      container modifiable-attributes {
        description
          "Describes the modifiable attributes of the VNF.";
        reference
          "GS NFV IFA011: Section 7.1.2 VNFD information element";

        leaf-list extension {
          type string;
          description
            "'Extension' attributes of VnfInfo that are writeable.";
          reference
            "GS NFV IFA011: Section 7.1.14 VnfInfoModifiableAttributes
             information element";
        }
        leaf-list metadata {
          type string;
          description
            "'Metadata' attributes of VnfInfo that are writeable.";
          reference
            "GS NFV IFA011: Section 7.1.14 VnfInfoModifiableAttributes
             information element";
        }
      }

      list lifecycle-management-script {
        key "event";
        description
          "Includes a list of events and corresponding management
           scripts performed for the VNF.";
        reference
          "GS NFV IFA011: Section 7.1.2 VNFD information element";

        leaf event {
          type lifecycle-management-script-event;
          description
            "Describes VNF lifecycle event(s) or an external stimulus
             detected on a VNFM reference point.";
          reference
            "GS NFV IFA011: Section 7.1.13 LifeCycleManagementScript
             information element";
        }
        leaf lcm-transition-event {
          type string;
          description
            "Describes the transition VNF lifecycle event(s) that
             cannot be mapped to any of the enumerated values
             defined for the event attribute.";
          reference
            "GS NFV IFA011: Section 7.1.13 LifeCycleManagementScript
             information element";
        }
        leaf script {
          type string;
          description
            "Includes a VNF LCM script (e.g. written in a DSL as
             specified in requirement VNF_PACK.LCM.001) triggered to
             react to one of the events listed in the event
             attribute.";
          reference
            "GS NFV IFA011: Section 7.1.13 LifeCycleManagementScript
             information element";
        }
        leaf script-dsl {
          type string;
          description
            "Defines the domain specific language (i.e. the type) of
             script that is provided. Types of scripts could include
             bash, python, etc.";
          reference
            "GS NFV IFA011: Section 7.1.13 LifeCycleManagementScript
             information element";
        }
        list script-input {
          key "key";
          leaf key {
            type string;
          }
          leaf value {
            type string;
          }
          description
            "Array of KVP requirements with the key as the parameter
             name and the value as the parameter that need to be
             passed as an input to the script.";
          reference
            "GS NFV IFA011: Section 7.1.13 LifeCycleManagementScript
             information element";
        }
      }

      list element-group {
        key "id";
        description
          "Describes the associated elements of a VNFD for a certain
           purpose during VNF lifecycle management.";
        reference
          "GS NFV IFA011: Section 7.1.2 VNFD information element";

        leaf id {
          type string;
          description
            "Unique identifier of this group in the VNFD.";
          reference
            "GS NFV IFA011: Section 7.1.4 VnfdElementGroup
             information element";
        }
        leaf description {
          type string;
          description
            "Human readable description of the group.";
          reference
            "GS NFV IFA011: Section 7.1.4 VnfdElementGroup
             information element";
        }
        leaf-list vdu {
          type leafref {
            path "../../nfv:vdu/nfv:id";
          }
          description
            "References to Vdus that are part of this group.";
          reference
            "GS NFV IFA011: Section 7.1.4 VnfdElementGroup
             information element";
        }
        leaf-list virtual-link-desc {
          type leafref {
            path "../../nfv:virtual-link-desc/nfv:id";
          }
          description
            "References to VnfVirtualLinkDesc that are part of this
             group.";
          reference
            "GS NFV IFA011: Section 7.1.4 VnfdElementGroup
             information element";
        }
      }

      list indicator {
        key "id";
        description
          "Declares the VNF indicators that are supported by this
           VNF.";
        reference
          "GS NFV IFA011: Section 7.1.2 VNFD information element";