etsi-nfv-common.yang

module etsi-nfv-common {
  namespace "urn:etsi:params:xml:ns:yang:etsi-nfv-common";
  prefix common;

  description
    "Common data types for ETSI data models.";

  revision 2018-06-19 {
    description
      "Initial revision

       Common data structures to support VNFD and NSD according to:
       ETSI GS NFV-IFA 014 Ed251v244
       ETSI GS NFV-IFA 011 Ed251v243";
  }

  /*
   * Identities.
   */
  identity layer-protocol {
  }
  identity Ethernet {
    base layer-protocol;
  }
  identity MPLS {
    base layer-protocol;
  }
  identity ODU2 {
    base layer-protocol;
  }
  identity IPv4 {
    base layer-protocol;
  }
  identity IPv6 {
    base layer-protocol;
  }
  identity Pseudo-Wire {
    base layer-protocol;
  }

  identity address-type {
    description
      "Describes the type of the address to be assigned to the CP 
       instantiated from the parent CPD.
       Value:
       • MAC address.
       • IP address.
       • …
       The content type shall be aligned with the address type 
       supported by the layerProtocol attribute of the parent CPD.";
    reference
      "GS NFV IFA011: Section 7.1.3.3, AddressData information
       element.";
  }
  identity mac-address {
    base address-type;
  }
  identity ip-address {
    base address-type;
  }

  identity 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";
  }
  identity instantiate-vnf {
    base supported-operation;
    description
      "This operation instantiates a particular DF of a VNF based on
       the definition in the VNFD.";
    reference
      "GS NFV IFA007: Section 7.2.3 Instantiate VNF Operation";
  }
  identity scale-vnf {
    base supported-operation;
    description
      "This operation provides methods to request scaling a VNF in
       multiple ways:
       • horizontal scaling:
         - scale out: adding additional VNFC instances to the VNF to
           increase capacity
         - scale in: removing VNFC instances from the VNF, in order to
           release unused capacity";
    reference
      "GS NFV IFA007: Section 7.2.4 Scale VNF Operation";
  }
  identity scale-vnf-to-level {
    base supported-operation;
    description
      "This operation scales an instantiated VNF of a particular DF to
       a target size. The target size is either expressed as an
       instantiation level of that DF as defined in the VNFD, or given
       as a list of scale levels, one per scaling aspect of that DF.
       Instantiation levels and scaling aspects are declared in the
       VNFD. Typically, the result of this operation is adding and/or
       removing Network Functions Virtualization Infrastructure (NFVI)
       resources to/from the VNF.";
    reference
      "GS NFV IFA007: Section 7.2.5 Scale VNF To Level Operation";
  }
  identity change-vnf-flavour {
    base supported-operation;
    description
      "This operation changes the DF of a VNF instance.";
    reference
      "GS NFV IFA007: Section 7.2.6 Change VNF Flavour Operation";
  }
  identity terminate-vnf {
    base supported-operation;
    description
      "This operation terminates a VNF.

       A VNF can be terminated gracefully or forcefully. Graceful
       termination means that the VNFM arranges to take the
       VNF out of service, e.g. by asking the VNF's EM to take the
       VNF out of service, and only after that shuts down the
       VNF and releases the resources. Forceful termination means that
       the VNFM immediately shuts down the VNF and releases the
       resources. A time interval can be specified for taking the VNF
       out of service, after which the VNF is shut down if taking it
       out of service has not completed.";
    reference
      "GS NFV IFA007: Section 7.2.7 Terminate VNF Operation";
  }
  identity query-vnf {
    base supported-operation;
    description
      "This operation provides information about VNF instances. The
       applicable VNF instances can be chosen based on
       filtering criteria, and the information can be restricted to
       selected attributes.";
    reference
      "GS NFV IFA007: Section 7.2.9 Query VNF Operation";
  }
  identity heal-vnf {
    base supported-operation;
    description
      "This operation enables the NFVO to request a VNFM to perform a
       VNF healing procedure.";
    reference
      "GS NFV IFA007: Section 7.2.10 Heal VNF Operation";
  }
  identity operate-vnf {
    base supported-operation;
    description
      "This operation enables requesting to change the state of a VNF
       instance, including starting and stopping the VNF instance.";
    reference
      "GS NFV IFA007: Section 7.2.11 Operate VNF Operation";
  }
  identity modify-vnf-information {
    base supported-operation;
    description
      "This operation allows updating information about a VNF
       instance.";
    reference
      "GS NFV IFA007: Section 7.2.12 Modify VNF Operation";
  }

  identity cp-role {
    description
      "Identifies the role of the port in the context of the traffic
       flow patterns in the VNF or parent NS.";
    reference
      "GS NFV IFA011: Section 7.1.6.3 Cpd information element";
  }
  identity root {
    base cp-role;
  }
  identity leaf {
    base cp-role;
  }

  /*
   * Typedefs
   */
      
  typedef flow-pattern {
    type enumeration {
      enum line;
      enum tree;
      enum mesh;
    }
  }

  typedef affinity-type {
    type enumeration {
      enum "affinity";
      enum "anti-affinity";
    }
  }

  typedef affinity-scope {
    type enumeration {
      enum "nfvi-node";
      enum "zone-group";
      enum "zone";
      enum "nfvi-pop";
    }
  }

  typedef internal-lifecycle-management-script-event {
    type enumeration {
      enum "start-instantiation";
      enum "end-instantiation";
      enum "start-scaling";
      enum "end-scaling";
      enum "start-healing";
      enum "end-healing";
      enum "start-termination";
      enum "end-termination";
      enum "start-vnf-flavor-change";
      enum "end-vnf-flavor-change";
      enum "start-vnf-operation-change";
      enum "end-vnf-operation-change";
      enum "start-vnf-ext-conn-change";
      enum "end-vnf-ext-conn-change";
      enum "start-vnfinfo-modification";
      enum "end-vnfinfo-modification";
    }
  }

  grouping local-affinity-or-anti-affinity-rule {
    list local-affinity-or-anti-affinity-rule {
      key "affinity-type affinity-scope";
      leaf affinity-type {
        type affinity-type;
        description
          "Specifies whether the rule is an affinity rule or an
           anti-affinity rule.";
        reference
          "GS NFV IFA011: Section 7.1.8.11,
           LocalAffinityOrAntiAffinityRule information element.";
      }

      leaf affinity-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 7.1.8.11,
           LocalAffinityOrAntiAffinityRule information element.";
      }
    }
  }

  grouping connectivity-type {
    container connectivity-type {
      leaf layer-protocol {
        mandatory true;
        type identityref {
          base layer-protocol;
        }
        description
          "Identifies the protocol this VL gives access to (Ethernet,
           MPLS, ODU2, IPV4, IPV6, Pseudo-Wire).";
        reference
          "GS NFV IFA011: Section 7.1.7.3, ConnectivityType
           information element.";
      }

      leaf flow-pattern {
        type flow-pattern;
        description
          "Identifies the flow pattern of the connectivity (Line,
           Tree, Mesh).";
        reference
          "GS NFV IFA011: Section 7.1.7.3, ConnectivityType
           information element.";
      }
    }
  }

  grouping link-bitrate-requirements {
    leaf root {
      type uint64;
      units "Mbps";
      mandatory true;
      description
        "Specifies the throughput requirement of
         the link (e.g. bitrate of E-Line, root bitrate
         of E-Tree, aggregate capacity of E-LAN).";
      reference
        "GS NFV IFA011: Section 7.1.8.6, LinkBitrateRequirements
         information element.";
    }

    leaf leaf {
      type uint64;
      units "Mbps";
      description
        "Specifies the throughput requirement of
        leaf connections to the link when
        applicable to the connectivity type (e.g. for
        E-Tree and E-LAN branches).";
      reference
        "GS NFV IFA011: Section 7.1.8.6, LinkBitrateRequirements
         information element.";
    }
  }

  grouping monitoring-parameter {
    leaf name {
      type string;
      description
        "Human readable name of the monitoring parameter.";
      reference
        "GS NFV IFA011: Section 7.1.11.3, MonitoringParameter
         information element.";
    }
    leaf performance-metric {
      type string;
      description
        "Performance metric that is monitored. This attribute shall
         contain the related 'Measurement Name' value as defined in
         clause 7.2 of ETSI GS NFV-IFA 027";
      reference
        "GS NFV IFA011: Section 7.1.11.3, MonitoringParameter
         information element and Section 7.2 of ETSI GS NFV-IFA 027.";
    }
    leaf collection-period {
      type uint64;
      units "ms";
      description
        "An attribute that describes the recommended periodicity at
         which to collect the performance information. VNFM determines
         if this parameter is considered.

         The vendor may provide this information as a guidance for
         creating PmJobs if needed.";
      reference
        "GS NFV IFA011: Section 7.1.11.3, MonitoringParameter
         information element.";
    }
  }
}