// SPDX-FileCopyrightText: 2021 Open Networking Foundation
//
// SPDX-License-Identifier: LicenseRef-ONF-Member-Only-1.0

module onf-upf {
  namespace "http://opennetworking.org/aether/upf";
  prefix upf;

  import ietf-inet-types { prefix inet; }
  import ietf-yang-types{ prefix yg; }
  import onf-aether-types { prefix at; }
  import onf-enterprise{ prefix ent; }
  import onf-site{ prefix st; }

  organization "Open Networking Foundation.";
  contact "Scott Baker";
  description "A Aether UPF List is a named User Plane Function.";

  revision "2021-09-16" {
    description "An Aether User Plane Function";
    reference "RFC 6087";
  }

  typedef upf-id {
        type yg:yang-identifier {
            length 1..32;
        }
  }

  container upf {
    description "The top level container";

    list upf {
      key "id";
      description
        "A list of named upfs.";

      leaf id {
        type upf-id;
        description "ID for this upf.";
      }

      leaf address {
        type inet:host;
        mandatory true;
        description
          "Address of UPF";
      }

      leaf port {
        type inet:port-number;
        mandatory true;
        description
            "Port for UPF";
      }

      leaf config-endpoint {
        type inet:uri;
        description "url for configuring the UPF";
      }         

      leaf display-name {
        type string {
            length 1..80;
        }
        description "display name to use in GUI or CLI";
      }

      leaf description {
        type at:description;
        description "description of this UPF";
      }

      // UPFs are always owned by an Enterprise, since they typically exist on the
      // Enterprise's edge.
      leaf enterprise {
        type leafref {
          path "/ent:enterprise/ent:enterprise/ent:id";
        }
        mandatory true;
        description
          "Link to enterprise that owns this Access Point List";
      }

      // UPFs always reside at a site, as the exist on physical infrastructure. GUI
      // will ensure that the tuple (DG, VCS, UPF) all exist on the same site.
      leaf site {
        type leafref {
          path "/st:site/st:site/st:id";
        }
        mandatory true;
        description
          "Link to site";
      }
    }
  }
}