module Cisco-IOS-XE-mdt-oper {

    yang-version 1;

    namespace
      "http://cisco.com/ns/yang/Cisco-IOS-XE-mdt-oper";

    prefix mdt-oper;

    import Cisco-IOS-XE-mdt-common-defs {
      prefix mdt-common-defs;
    }
    import ietf-inet-types {
      prefix inet;
    }
    import ietf-yang-types {
      prefix yang;
    }
    import cisco-semver {
      prefix cisco-semver;
    }

    organization "Cisco Systems, Inc.";

    contact
      "Cisco Systems, Inc.
     Customer Service

     Postal: 170 W Tasman Drive
     San Jose, CA 95134

     Tel: +1 1800 553-NETS

     E-mail: cs-yang@cisco.com";

    description
      "This module contains a collection of YANG
     definitions for operational data of streaming telemetry.
     Copyright (c) 2016-2020 by Cisco Systems, Inc.
     All rights reserved.";

    revision "2020-07-01" {
      description "Copyright update";
      reference
        "4.1.1";

    }

    revision "2019-09-04" {
      description
        "Add receiver state for disconnection in progress.";
      reference
        "4.1.0";

    }

    revision "2019-05-01" {
      description
        "- Change to VRF usage from common model.
       - Added semantic version";
      reference
        "4.0.0";

    }

    revision "2018-11-10" {
      description
        "Cleaned up spelling errors in descriptions.
       Mark con-state-pending as no longer used.
       Removal of statistics.
       Addition of more operational data.
       Removal of connection ID.";
      reference
        "3.0.0";

    }

    revision "2018-06-13" {
      description
        "Mark con-state-pending as no longer used";
      reference
        "2.3.0";

    }

    revision "2018-03-06" {
      description
        "New mdt_sub_type SUB_TYPE_PERMANENT";
      reference
        "2.2.0";

    }

    revision "2017-09-20" {
      description
        "TLS support for Native stream";
      reference
        "2.1.0";

    }

    revision "2017-07-01" {
      description "Add support for VRFs";
      reference
        "2.0.0";

    }

    revision "2017-03-02" {
      description "Initial revision";
      reference
        "1.0.0";

    }

    cisco-semver:module-version "4.1.1";
    cisco-semver:module-version "4.1.0";
    cisco-semver:module-version "4.0.0";
    cisco-semver:module-version "3.0.0";
    cisco-semver:module-version "2.3.0";
    cisco-semver:module-version "2.2.0";
    cisco-semver:module-version "2.1.0";
    cisco-semver:module-version "2.0.0";
    cisco-semver:module-version "1.0.0";

    typedef mdt-sub-type {
      type enumeration {
        enum "sub-type-dynamic" {
          value 1;
          description
            "Dynamic subscriptions
           -do not survive reboot
           -existence tied to connection they are created on
           -send updates only to peer that creates them";
        }
        enum "sub-type-static" {
          value 2;
          description
            "Static subscriptions
           -created, (modified), and deleted by management operations
           -survive reboot
           -receivers are configured ";
        }
        enum "sub-type-permanent" {
          value 3;
          description
            "Permanent subscriptions
           -created during system startup, can not be modified";
        }
      }
      description "Subscription types";
    }

    typedef mdt-sub-state {
      type enumeration {
        enum "sub-state-valid" {
          value 0;
          description
            "The subscription is valid and may be sending updates.";
        }
        enum "sub-state-suspended" {
          value 1;
          description
            "The subscription has been suspended and is not
           sending notifications even if there are updates.";
        }
        enum "sub-state-terminated" {
          value 2;
          description
            "The subscription is terminated. This state is valid
           only for static subscriptions.";
        }
        enum "sub-state-invalid" {
          value 3;
          description
            "The subscription is invalid. This state is valid
           only for static subscriptions.";
        }
      }
      description "Subscription states";
    }

    typedef mdt-receiver-state {
      type enumeration {
        enum "rcvr-state-invalid" {
          value 1;
          description
            "The receiver configuration is invalid and
           cannot be used.";
        }
        enum "rcvr-state-disconnected" {
          value 2;
          description
            "The receiver is disconnected and there is no
           attempt being made to connect to it.";
        }
        enum "rcvr-state-connecting" {
          value 3;
          description
            "An attempt is being made to connect to the receiver.";
        }
        enum "rcvr-state-connected" {
          value 4;
          description
            "The receiver is connected, and update notifications
           are being sent to the receiver when they occur";
        }
        enum "rcvr-state-disconnecting" {
          value 5;
          description
            "The receiver is in the process of being disconnected.";
        }
      }
      description "Receiver states.";
    }

    typedef mdt-con-state {
      type enumeration {
        enum "con-state-active" {
          value 0;
          description
            "The connection is active and usable.";
        }
        enum "con-state-connecting" {
          value 1;
          description
            "An attempt is being made to set the connection up.";
        }
        enum "con-state-pending" {
          value 2;
          description
            "The connection is down, but between connection
           attempts. It is in this state, for example, during
           the idle time between retries. No longer used - use
           con-state-connecting instead.";
        }
        enum "con-state-disconnecting" {
          value 3;
          description
            "The connection is the process of being disconnected.";
        }
      }
      description "Connection states.";
    }

    grouping mdt-stream {
      description
        "MDT stream table element.";
      leaf-list stream {
        type string;
        ordered-by user;
        description
          "Name of a supported stream.";
      }
    }  // grouping mdt-stream

    grouping mdt-subscription-oper {
      description
        "Subscription operational data.";
      leaf subscription-id {
        type uint32;
        description
          "Unique subscription identifier.";
      }

      container base {
        description
          "Common subscription information.";
        uses mdt-common-defs:mdt-subscription-base;
      }  // container base

      leaf type {
        type mdt-sub-type;
        description "Subscription type.";
      }

      leaf state {
        type mdt-sub-state;
        description "Subscription state.";
      }

      leaf comments {
        type string;
        description
          "Comments related to subscription state.";
      }

      list mdt-receivers {
        key "address port";
        description "List of MDT receivers.";
        uses mdt-oper:mdt-receiver-oper;

        uses mdt-common-defs:mdt-receiver-id;
      }  // list mdt-receivers

      leaf last-state-change-time {
        type yang:date-and-time;
        description
          "Time of last state change of this subscription.";
      }
    }  // grouping mdt-subscription-oper

    grouping mdt-receiver-oper {
      description
        "MDT receiver operational information.";
      leaf protocol {
        type string;
        description
          "Receiver transport protocol.";
      }

      leaf state {
        type mdt-receiver-state;
        description "Receiver state.";
      }

      leaf comments {
        type string;
        description
          "Comments related to receiver state.";
      }

      leaf profile {
        type string;
        description
          "Receiver's protocol profile name.";
      }

      leaf last-state-change-time {
        type yang:date-and-time;
        description
          "Time of last state change of this receiver.";
      }
    }  // grouping mdt-receiver-oper

    grouping mdt-connection-data {
      description "MDT connection data";
      leaf transport {
        type string;
        description
          "Transport protocol on this connection
         See transport-protocol from subscribed-notifications
         for possible values.";
      }

      leaf peer-id {
        type string;
        description
          "Identity of the peer at the other end of the connection.
         May be empty, depending on connection state.";
      }

      leaf state {
        type mdt-con-state;
        description "Connection state";
      }

      list mdt-sub-con-info {
        key "sub-id";
        description
          "List of subscription specific information for this
         connection.";
        uses mdt-oper:mdt-sub-con-info;
      }  // list mdt-sub-con-info

      leaf profile {
        type string;
        description
          "Protocol profile used with this connection.";
      }

      leaf last-state-change-time {
        type yang:date-and-time;
        description
          "Time of last state change of this connection.";
      }

      leaf source-address-in-use {
        type inet:ip-address;
        description
          "Source address used by this connection.";
      }
    }  // grouping mdt-connection-data

    grouping mdt-sub-con-info {
      description
        "Per-subscription per-connection operational data.";
      leaf sub-id {
        type uint32;
        description
          "Subscription identifier.";
      }

      leaf time-of-connection {
        type yang:date-and-time;
        description
          "The time the subscription was started using this connection.";
      }
    }  // grouping mdt-sub-con-info

    container mdt-oper-data {
      config false;
      description "MDT operational data.";
      container mdt-streams {
        description
          "MDT streams table. The list of supported streams.";
        uses mdt-oper:mdt-stream;
      }  // container mdt-streams

      list mdt-subscriptions {
        key "subscription-id";
        description
          "MDT subscription operational data.";
        uses mdt-oper:mdt-subscription-oper;
      }  // list mdt-subscriptions

      list mdt-connections {
        key "address port vrf-table-id source-address";
        description
          "MDT subscription connection operational data.";
        uses mdt-oper:mdt-connection-data;

        uses mdt-common-defs:mdt-connection-id;
      }  // list mdt-connections
    }  // container mdt-oper-data
  }  // module Cisco-IOS-XE-mdt-oper