module inter-vpn-link {

  namespace "urn:opendaylight:params:xml:ns:yang:netvirt:inter-vpn-link";
  prefix "inter-vpn-link";

  import ietf-inet-types { prefix inet; revision-date "2013-07-15"; }

  import ietf-yang-types { prefix yang; }

  import config { prefix config; revision-date 2013-04-05; }

  description
    "Service definition for inter-vpn-link project";

  revision "2016-03-11" {
      description
        "Initial revision";
    }

  grouping vpn-endpoint-attribs {
      leaf vpn-uuid {
          mandatory "true";
          type yang:uuid;
          description "UUID of the VPN to which this endpoint belongs to";
      }

      leaf ip-address {
          mandatory "true";
          type inet:ipv4-address;
          description "IP address of the endpoint";
       }
  }


  grouping vpn-endpoint-state-attribs {
      leaf vpn-uuid {
          type yang:uuid;
          description "UUID of the VPN to which this endpoint belongs to";
      }

      leaf-list dp-id {
          type uint64;

          description "list of DPNs where this endpoint of the Link has been instantiated";
      }

      leaf lport-tag {
          type uint16;

      }
  }

  container inter-vpn-links {
      list inter-vpn-link {
          key "name";
          max-elements "unbounded";
          min-elements "0";

          leaf name {
              mandatory "true";
              type string;
              description "Inter VPN link name";
          }


          container first-endpoint {
              uses vpn-endpoint-attribs;
          }

         container second-endpoint {
              uses vpn-endpoint-attribs;
          }

          leaf bgp-routes-leaking {
              mandatory "true";
              type boolean;
              description "Flag to enable the leaking of BGP routes learnt from one VPN to another VPN";
          }

          must "first-endpoint and second-endpoint";  // To ensure both endpoints are present
      }
  }

  container inter-vpn-link-states {
      list inter-vpn-link-state {
          key "inter-vpn-link-name";

          leaf inter-vpn-link-name {
              type string;
          }

          leaf state {
              type enumeration {
                  enum active;
                  enum error;
              }
              description "Holds the current state of the InterVPN Link";
          }

          container first-endpoint-state {
              uses vpn-endpoint-state-attribs;
          }

          container second-endpoint-state {
              uses vpn-endpoint-state-attribs;
          }

          leaf error-description {
              type string;
          }
       }
   }

  notification inter-vpn-link-creation-error {
      container inter-vpn-link-creation-error-message {
          leaf error-message {
              type "string";
          }
      }
  }

}