module ietf-vn-telemetry {

    yang-version 1.1;

    namespace
      "urn:ietf:params:xml:ns:yang:ietf-vn-telemetry";

    prefix vn-tel;

    import ietf-vn {
      prefix vn;
      reference
        "I-D.ietf-teas-actn-vn-yang: A YANG Data Model for VN
        Operation";


    }
    import ietf-te {
      prefix te;
      reference
        "I-D.ietf-teas-yang-te: A YANG Data Model for Traffic
        Engineering Tunnels and Interfaces";


    }
    import ietf-te-types {
      prefix te-types;
      reference
        "RFC 8776: Common YANG Data Types for Traffic Engineering";


    }
    import ietf-te-telemetry {
      prefix te-tel;
      reference
        "RFC XXXX: YANG models for VN/TE Performance Monitoring
        Telemetry and Scaling Intent Autonomics";


    }

    organization
      "IETF Traffic Engineering Architecture and Signaling (TEAS)
     Working Group";

    contact
      "WG Web:  <https://datatracker.ietf.org/wg/teas/about/>
     WG List: <mailto:teas@ietf.org>
     Editor:  Young Lee <younglee.tx@gmail.com>
              Dhruv Dhody <dhruv.ietf@gmail.com>";

    description
      "This module describes YANG data models for performance
     monitoring telemetry for Virtual Network (VN).

     Copyright (c) 2022 IETF Trust and the persons identified as
     authors of the code.  All rights reserved.

     Redistribution and use in source and binary forms, with or
     without modification, is permitted pursuant to, and subject to
     the license terms contained in, the Revised BSD License set
     forth in Section 4.c of the IETF Trust's Legal Provisions
     Relating to IETF Documents
     (https://trustee.ietf.org/license-info).

     This version of this YANG module is part of RFC XXXX; see the
     RFC itself for full legal notices.";

    revision "2022-03-07" {
      description "Initial revision.";
      reference
        "RFC XXXX: YANG models for VN/TE Performance Monitoring
        Telemetry and Scaling Intent Autonomics";

    }


    identity grouping-op {
      description
        "Base identity for grouping-operation";
    }

    identity minimum {
      base grouping-op;
      description
        "Select the minimum of the monitored parameters";
    }

    identity maximum {
      base grouping-op;
      description
        "The maximum of the monitored parameters";
    }

    identity mean {
      base grouping-op;
      description
        "The mean of the monitored parameters";
    }

    identity standard-deviation {
      base grouping-op;
      description
        "The standard deviation of the monitored parameters";
    }

    identity sum {
      base grouping-op;
      description
        "The sum of the monitored parameters";
    }

    identity and {
      base grouping-op;
      description "Logical AND operation";
    }

    identity or {
      base grouping-op;
      description "Logical OR operation";
    }

    grouping grouping-operation {
      description
        "Grouping operation for each performance-type";
      list operation {
        key "performance-type";
        description
          "Grouping operation for each performance-type";
        leaf performance-type {
          type identityref {
            base te-tel:telemetry-param-type;
          }
          description
            "Reference to the tunnel level telemetry type";
        }

        leaf grouping-operation {
          type identityref {
            base grouping-op;
          }
          description
            "describes the operation to apply to the te-grouped-params";
        }
      }  // list operation
    }  // grouping grouping-operation

    augment /vn:virtual-network/vn:vn {
      description
        "Augmentation parameters for state TE VN topologies.";
      container vn-scaling-intent {
        description "scaling intent";
        container scale-in-intent {
          description "VN scale-in";
          uses te-tel:scaling-in-intent;
        }  // container scale-in-intent

        container scale-out-intent {
          description "VN scale-out";
          uses te-tel:scaling-out-intent;
        }  // container scale-out-intent
      }  // container vn-scaling-intent

      container vn-telemetry {
        description "VN telemetry params";
        container params {
          config false;
          description
            "Read-only telemetry parameters";
          uses te-types:performance-metrics-attributes;
        }  // container params

        uses grouping-operation;
      }  // container vn-telemetry
    }

    augment /vn:virtual-network/vn:vn/vn:vn-member {
      description
        "Augmentation parameters for state TE vn member topologies.";
      container vn-member-telemetry {
        description
          "VN member telemetry params";
        container params {
          config false;
          description
            "Read-only telemetry parameters";
          uses te-types:performance-metrics-attributes;

          leaf-list te-grouped-params {
            type leafref {
              path "/te:te/te:tunnels/te:tunnel/te-tel:te-telemetry/te-tel:id";
            }
            description
              "A list of underlying TE parameters that form the
             VN-member";
          }
        }  // container params

        uses grouping-operation;
      }  // container vn-member-telemetry
    }
  }  // module ietf-vn-telemetry