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module ietf-otn-tunnel {
  yang-version 1.1;

  namespace "urn:ietf:params:xml:ns:yang:ietf-otn-tunnel";
  prefix "otn-tunnel";

  import ietf-te {
    prefix "te";
  }

  import ietf-otn-types {
    prefix "otn-types";
  }

  import ietf-te-types {
    prefix "te-types";
  }

  import ietf-inet-types {
    prefix "inet";
  }

  organization
    "IETF CCAMP Working Group";
  contact
    "WG Web: <http://tools.ietf.org/wg/ccamp/>
     WG List: <mailto:ccamp@ietf.org>

     Editor: Haomian Zheng
             <mailto:zhenghaomian@huawei.com>

     Editor: Aihua Guo
             <mailto:aihuaguo@huawei.com>

     Editor: Italo Busi
             <mailto:italo.busi@huawei.com>

     Editor: Anurag Sharma
             <mailto:ansha@google.com>

     Editor: Rajan Rao
             <mailto:rrao@infinera.com>

     Editor: Sergio Belotti
             <mailto:sergio.belotti@nokia.com>

     Editor: Victor Lopez
             <mailto:victor.lopezalvarez@telefonica.com>

     Editor: Yunbo Li
             <mailto:liyunbo@chinamobile.com>

     Editor: Yunbin Xu
             <mailto:xuyunbin@ritt.cn>";

  description
    "This module defines a model for OTN Tunnel Services.";

  revision "2018-06-07" {
    description
      "Revision 0.5";
    reference
      "draft-ietf-ccamp-otn-tunnel-model-02";
  }

 /*
  * Groupings
  */

  grouping otn-tunnel-endpoint {
    description "Parameters for OTN tunnel";

    leaf payload-treatment {
      type enumeration {
        enum switching {
          description "Client signal is switched to another tunnel
                       in this domain";
        }
        enum transport {
          description "Client signal is transparently transmitted
                       in this domain";
        }
      }
      default switching;
      description
        "Treatment of the incoming payload. Payload can be switched
         or transported.";
    }

    leaf src-client-signal {
      type identityref {
        base otn-types:client-signal;
      }
      description
        "Client signal at the source endpoint of the tunnel";
    }

    leaf src-tpn {
      type uint16 {
        range "0..4095";
      }
      description
        "Tributary Port Number. Applicable in case of mux services";
      reference
        "RFC7139: GMPLS Signaling Extensions for Control of Evolving
         G.709 Optical Transport Networks";
    }

    leaf src-tsg {
      type identityref {
        base otn-types:tributary-slot-granularity;
      }
      description
        "Tributary slot granularity.
         Applicable in case of mux services";
      reference
        "G.709/Y.1331, February 2016: Interfaces for the
         Optical Transport Network (OTN)";
    }

    leaf src-tributary-slot-count {
      type uint16;
      description
        "Number of tributary slots used at the source.";
    }

    container src-tributary-slots {
      description
        "A list of tributary slots used by the client service.
         Applicable in case of mux services";
      leaf-list values {
        type uint8;
          description
            "Tributary tributary slot value";
          reference
            "G.709/Y.1331, February 2016: Interfaces for the
             Optical Transport Network (OTN)";
      }
    }

    leaf dst-client-signal {
      type identityref {
        base otn-types:client-signal;
      }
      description
        "Client signal at the destination endpoint of the tunnel";
    }

    leaf dst-tpn {
      type uint16 {
        range "0..4095";
      }
      description
        "Tributary Port Number. Applicable in case of mux services";
      reference
        "RFC7139: GMPLS Signaling Extensions for Control of Evolving
         G.709 Optical Transport Networks.";
    }

    leaf dst-tsg {
      type identityref {
        base otn-types:tributary-slot-granularity;
      }
      description
        "Tributary slot granularity.
         Applicable in case of mux services";
      reference
        "G.709/Y.1331, February 2016: Interfaces for the
         Optical Transport Network (OTN)";
    }

    leaf dst-tributary-slot-count {
      type uint16;
      description
        "Number of tributary slots used at the destination.";
    }

    container dst-tributary-slots {
      description
        "A list of tributary slots used by the client service.
         Applicable in case of mux services";
      leaf-list values {
        type uint8;
        description
          "Tributary slot value";
        reference
          "G.709/Y.1331, February 2016: Interfaces for the
           Optical Transport Network (OTN)";
      }
    }
  }

  /*
  Note: Comment has been given to authors of TE Tunnel model to add
  list of endpoints under config to support P2MP tunnel.
  */

 /*
  * Data nodes
  */

  augment "/te:te/te:tunnels/te:tunnel" {
    description
      "Augment with additional parameters required for OTN service";
    uses otn-tunnel-endpoint;
  }

  /*
   * Augment TE bandwidth
   */

	 /* Augment bandwidth of named-path-constraints */
  augment "/te:te/te:globals/te:named-path-constraints/"
        + "te:named-path-constraint/"
        + "te:te-bandwidth/te:technology" {
    description "OTN bandwidth.";
    case otn {
      uses otn-types:otn-path-bandwidth;
    }
  }

  /* Augment bandwdith of tunnel */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:te-bandwidth/te:technology" {
    description "OTN bandwidth.";
    case otn {
      uses otn-types:otn-path-bandwidth;
    }
  }

  /* Augment bandwidth of primary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-primary-paths/te:p2p-primary-path/"
        + "te:te-bandwidth/te:technology" {
    description "OTN bandwidth.";
    case otn {
      uses otn-types:otn-path-bandwidth;
    }
  }

  /* Augment bandwidth of reverse primary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-primary-paths/te:p2p-primary-path/"
        + "te:p2p-reverse-primary-path/"
        + "te:te-bandwidth/te:technology" {
    description "OTN bandwidth.";
    case otn {
      uses otn-types:otn-path-bandwidth;
    }
  }

  /* Augment bandwidht of secondary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-secondary-paths/te:p2p-secondary-path/"
        + "te:te-bandwidth/te:technology" {
    description "OTN bandwidth.";
    case otn {
      uses otn-types:otn-path-bandwidth;
    }
  }
  
  /*
   * Augment TE label.
   */

  /* Augment label hop of route-object-exclude-always of named-path-constraints */
  augment "/te:te/te:globals/te:named-path-constraints/"
        + "te:named-path-constraint/te:explicit-route-objects/"
        + "te:route-object-exclude-always/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /* Augment label hop of route-object-include-exclude of named-path-constraints */
  augment "/te:te/te:globals/te:named-path-constraints/"
        + "te:named-path-constraint/te:explicit-route-objects/"
        + "te:route-object-include-exclude/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }


  /* Augment label hop of route-object-exclude-always of primary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-primary-paths/te:p2p-primary-path/"
        + "te:explicit-route-objects/"
        + "te:route-object-exclude-always/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /* Augment label hop of route-object-include-exclude of primary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-primary-paths/te:p2p-primary-path/"
        + "te:explicit-route-objects/"
        + "te:route-object-include-exclude/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /* Augment label hop of route-exclude of primary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-primary-paths/te:p2p-primary-path/"
        + "te:optimizations/te:algorithm/te:metric/"
        + "te:optimization-metric/te:explicit-route-exclude-objects/"
        + "te:route-object-exclude-object/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /* Augment label hop of route-include of primary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-primary-paths/te:p2p-primary-path/"
        + "te:optimizations/te:algorithm/te:metric/"
        + "te:optimization-metric/te:explicit-route-include-objects/"
        + "te:route-object-include-object/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /* Augment label hop of path-route of primary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-primary-paths/te:p2p-primary-path/"
        + "te:state/te:path-properties/"
        + "te:path-route-objects/te:path-computed-route-object/"
        + "te:state/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /*
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-primary-paths/te:p2p-primary-path/"
        + "te:state/te:lsps/te:lsp/te:record-route-subobjects/"
		+ "te:record-route-subobject/"
		+ "te:state/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
	  uses otn-types:otn-path-label;
	}
  }
  */

  /* Augment label hop of path-route of primary LSP */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-primary-paths/te:p2p-primary-path/"
        + "te:state/te:lsps/te:lsp/te:path-properties/"
        + "te:path-route-objects/te:path-computed-route-object/"
        + "te:state/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /* Augment label hop of route-object-exclude-always of reverse primary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-primary-paths/te:p2p-primary-path/"
        + "te:p2p-reverse-primary-path/"
        + "te:explicit-route-objects/"
        + "te:route-object-exclude-always/"
        + "te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /* Augment label hop of route-object-include-exclude of reverse primary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-primary-paths/te:p2p-primary-path/"
        + "te:p2p-reverse-primary-path/"
        + "te:explicit-route-objects/"
        + "te:route-object-include-exclude/"
        + "te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /* Augment label hop of route-exclude of reverse primary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-primary-paths/te:p2p-primary-path/"
        + "te:p2p-reverse-primary-path/"
        + "te:optimizations/te:algorithm/te:metric/"
        + "te:optimization-metric/te:explicit-route-exclude-objects/"
        + "te:route-object-exclude-object/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /* Augment label hop of route-include of reverse primary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-primary-paths/te:p2p-primary-path/"
        + "te:p2p-reverse-primary-path/"
        + "te:optimizations/te:algorithm/te:metric/"
        + "te:optimization-metric/te:explicit-route-include-objects/"
        + "te:route-object-include-object/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /* Augment label hop of label hop of path-route of reverse primary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-primary-paths/te:p2p-primary-path/"
        + "te:p2p-reverse-primary-path/"
        + "te:state/te:path-properties/"
        + "te:path-route-objects/te:path-computed-route-object/"
        + "te:state/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /*
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-primary-paths/te:p2p-primary-path/"
		+ "te:p2p-reverse-primary-path/"
        + "te:state/te:lsps/te:lsp/te:lsp-record-route-subobjects/"
		+ "te:record-route-subobject/"
		+ "te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
	  uses otn-types:otn-path-label;
	}
  }
  */

  /* Augment label hop of path-route of reverse primary LSP */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-primary-paths/te:p2p-primary-path/"
        + "te:p2p-reverse-primary-path/"
        + "te:state/te:lsps/te:lsp/te:path-properties/"
        + "te:path-route-objects/te:path-computed-route-object/"
        + "te:state/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /* Augment label hop of route-object-exclude-always of secondary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-secondary-paths/te:p2p-secondary-path/"
        + "te:explicit-route-objects/"
        + "te:route-object-exclude-always/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /* Augment label hop of route-object-include-exclude of secondary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-secondary-paths/te:p2p-secondary-path/"
        + "te:explicit-route-objects/"
        + "te:route-object-include-exclude/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /* Augment label hop of route-exclude of secondary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-secondary-paths/te:p2p-secondary-path/"
        + "te:optimizations/te:algorithm/te:metric/"
        + "te:optimization-metric/te:explicit-route-exclude-objects/"
        + "te:route-object-exclude-object/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /* Augment label hop of route-include of secondary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-secondary-paths/te:p2p-secondary-path/"
        + "te:optimizations/te:algorithm/te:metric/"
        + "te:optimization-metric/te:explicit-route-include-objects/"
        + "te:route-object-include-object/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /* Augment label hop of label hop of path-route of secondary path */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-secondary-paths/te:p2p-secondary-path/"
        + "te:state/te:path-properties/te:path-route-objects/" 
        + "te:path-computed-route-object/te:state/te:type/te:label/" 
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /*
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-secondary-paths/te:p2p-secondary-path/"
        + "te:state/te:lsps/te:lsp/te:lsp-record-route-subobjects/"
		+ "te:record-route-subobject/"
		+ "te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
	  uses otn-types:otn-path-label;
	}
  }
  */

  /* Augment label hop of path-route of secondary LSP */
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:p2p-secondary-paths/te:p2p-secondary-path/"
        + "te:state/te:lsps/te:lsp/te:path-properties/"
        + "te:path-route-objects/"
        + "te:path-computed-route-object/te:state/te:type/te:label/" 
        + "te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
      uses otn-types:otn-path-label;
    }
  }

  /*
  augment "/te:te/te:lsp-state/"
        + "te:lsp-record-route-subobjects/te:lsp-record-route-subobject/" 
		+ "te:record-route-subobject/" 
		+ "te:type/te:label/te:label-hop/te:te-label/te:technology" {
    description "OTN label.";
    case otn {
	  uses otn-types:otn-path-label;
	}
  }
  */
  
  
  grouping p2p-path-ero {
    description
      "TE tunnel ERO configuration grouping";

    leaf te-default-metric {
      type uint32;
      description
        "Traffic engineering metric.";
    }
    leaf te-delay-metric {
      type uint32;
      description
        "Traffic engineering delay metric.";
    }
    leaf te-hop-metric {
      type uint32;
      description
        "Traffic engineering hop metric.";
    }
    container explicit-route-objects {
      description "Explicit route objects container";
      list explicit-route-object {
        key "index";
        description
          "List of explicit route objects";
        leaf explicit-route-usage {
          type identityref {
            base te-types:route-usage-type;
          }
          description "An explicit-route hop action.";
        }
        uses te-types:explicit-route-hop {
		  augment "type/label/label-hop/te-label/technology" {
		    description "OTN label.";
            case otn {
	          uses otn-types:otn-path-label;
	        }
		  }
		}
      }
    }
  }

  rpc otn-te-tunnel-path-compute {
    description "OTN TE tunnel path computation";
    input {
      list request {
        key "id";
        description "A list of path computation requests.";

        leaf id {
          type uint8;
          description
            "Request ID.";
        }
        leaf type {
          type identityref {
            base te-types:tunnel-type;
          }
          description "TE tunnel type.";
        }
        leaf source {
          type inet:ip-address;
          description
            "TE tunnel source address.";
        }
        leaf destination {
          type inet:ip-address;
          description
            "TE tunnel destination address";
        }
        leaf src-tp-id {
          type binary;
          description
            "TE tunnel source termination point identifier.";
        }
        leaf dst-tp-id {
          type binary;
          description
            "TE tunnel destination termination point identifier.";
        }
        leaf switching-layer {
          type identityref {
            base te-types:switching-capabilities;
          }
          description
            "Switching layer where the requests are computed.";
        }
        leaf encoding {
          type identityref {
            base te-types:lsp-encoding-types;
          }
          description "LSP encoding type";
        }
        leaf protection-type {
          type identityref {
            base te-types:lsp-protection-type;
          }
          description "LSP protection type";
        }
        leaf restoration-type {
          type identityref {
            base te-types:lsp-restoration-type;
          }
          description "LSP restoration type";
        }
        leaf provider-id {
          type te-types:te-global-id;
          description
            "An identifier to uniquely identify a provider.";
        }
        leaf client-id {
          type te-types:te-global-id;
          description
            "An identifier to uniquely identify a client.";
        }
        leaf te-topology-id {
          type te-types:te-topology-id;
          description
            "It is presumed that a datastore will contain many
             topologies. To distinguish between topologies it is
             vital to have UNIQUE topology identifiers.";
        }
        leaf setup-priority {
          type uint8 {
            range "0..7";
          }
          description
            "TE LSP setup priority";
        }
        leaf hold-priority {
          type uint8 {
            range "0..7";
          }
          description
            "TE LSP hold priority";
        }
        leaf te-path-metric-type {
          type identityref {
            base te-types:path-metric-type;
          }
          default te-types:path-metric-te;
          description
            "The tunnel path metric type.";
        }

        leaf odu-type {
          type identityref{
            base otn-types:tributary-protocol-type;
          }
          description "Type of ODU";
        }
        container p2p-primary-paths {
          description "Set of P2P primary paths container";
          list p2p-primary-path {
            key "name";
            description
              "List of primary paths for this tunnel.";
            leaf name {
              type string;
              description "TE path name";
            }
            uses p2p-path-ero;
          }
        }
        container p2p-secondary-paths {
          description "Set of P2P secondary paths container";
          list p2p-secondary-path {
            key "name";
            description
              "List of secondary paths for this tunnel.";
            leaf name {
              type string;
              description "TE path name";
            }
            uses p2p-path-ero;
          }
        }
        uses otn-tunnel-endpoint;
      }
    }
    output {
      leaf return-code {
        type enumeration {
          enum success {
            description "success";
          }
          enum aborted {
            description "aborted";
          }
          enum destination-not-found {
            description "destination-not-found";
          }
          enum invalid-argument {
            description "invalid-argument";
          }
          enum no-memory {
            description "no-memory";
          }
          enum no-path-found {
            description "no-path-found";
          }
          enum other-error {
            description "other-error";
          }
          enum some-path-not-found {
            description "some-path-not-found";
          }
          enum source-not-found {
            description "source-not-found";
          }
          enum topology-error {
            description "topology-error";
          }
        }
        description
          "Return code";
      }
      list result {
        key "id";
        description
          "A list of results for all requests.";

        leaf id {
          type uint8;
          description
            "Request ID";
        }
        container p2p-primary-paths {
          description "Set of P2P primary paths container";
          list p2p-primary-path {
            key "name";
            description
              "List of resultant primary paths for this tunnel.";
            leaf name {
              type string;
              description "TE path name";
            }
            uses p2p-path-ero;
          }
        }
        container p2p-secondary-paths {
          description "Set of P2P secondary paths container";
          list p2p-secondary-path {
            key "name";
            description
              "List of resultant secondary paths for this tunnel.";
            leaf name {
              type string;
              description "TE path name";
            }
            uses p2p-path-ero;
          }
        }
      }
    }
  }
}