module huawei-mpls-res {

    yang-version 1;

    namespace
      "urn:huawei:yang:huawei-mpls-res";

    prefix mpls-res;

    import huawei-extension {
      prefix ext;
    }

    organization
      "Huawei Technologies Co., Ltd.";

    contact
      "Huawei Industrial Base
    Bantian, Longgang
    Shenzhen 518129
    People's Republic of China
    Website: http://www.huawei.com
    Email: support@huawei.com";

    description
      "This YANG module defines essential components for the management of labels.";

    revision "2020-04-02" {
      description "Modify description.";
      reference
        "Huawei private.";

    }

    revision "2019-04-27" {
      description "Initial revision.";
      reference
        "Huawei private.";

    }

    ext:task-name "system";

    typedef mpls-label-type {
      type enumeration {
        enum "reserved" {
          value 0;
          description "Reserved label type.";
        }
        enum "static" {
          value 1;
          description "Static label type.";
        }
        enum "dynamic" {
          value 2;
          description "Dynamic label type.";
        }
        enum "block" {
          value 3;
          description "Block label type.";
        }
      }
      description "Label type.";
    }

    container mpls-res {
      description
        "Query and configuration of labels.";
      container static-label-segments {
        config false;
        description
          "List of idle static label segments.";
        list static-label-segment {
          key "index";
          description
            "Operational data of a idle static label segment.";
          leaf index {
            type uint32;
            description
              "Specifies the index of label segment.";
          }

          leaf query-begin {
            ext:support-filter "true";
            type uint32;
            description
              "Beginning of a label query segment.";
          }

          leaf query-length {
            ext:support-filter "true";
            type uint32;
            description
              "Specifies the length of label query segment.";
          }

          leaf label-begin {
            type uint32;
            description
              "Specifies the first idle label of a idle static label segment.";
          }

          leaf label-end {
            type uint32;
            description
              "Specifies the last idle label of a idle static label segment.";
          }

          leaf label-length {
            type uint32;
            description
              "Specifies the idle label length of a idle static label segment.";
          }
        }  // list static-label-segment
      }  // container static-label-segments

      container mpls-label-statisticss {
        config false;
        description
          "List of label statistics.";
        list mpls-label-statistics {
          key "type";
          description
            "Statistics of the label.";
          leaf type {
            type mpls-label-type;
            description "Label type.";
          }

          leaf min-value {
            type uint32;
            description
              "Minimum label value.";
          }

          leaf max-value {
            type uint32;
            description
              "Maximum label value.";
          }

          leaf available-number {
            type uint32;
            description
              "Number of available label.";
          }
        }  // list mpls-label-statistics
      }  // container mpls-label-statisticss
    }  // container mpls-res

    rpc static-label-statisticss {
      description
        "Query the tags that can be used by static services.";
      input {
        leaf query-begin {
          type uint32 {
            range "16..262143";
          }
          must "../query-length";
          description
            "Specify the start value for searching for available labels.";
        }

        leaf query-length {
          type uint32 {
            range "1..262128";
          }
          description
            "Specifies the length of label query segment.";
        }
      }

      output {
        container labels {
          description
            "List of label segment.";
          list label {
            key "label-begin label-end";
            description "Label segment.";
            leaf label-begin {
              type uint32;
              description
                "Start value of a label.";
            }

            leaf label-end {
              type uint32;
              description
                "End value of a label.";
            }
          }  // list label
        }  // container labels
      }
    }  // rpc static-label-statisticss

    rpc dynamic-label-statisticss {
      description
        "Query the tags that can be used by dynamic services.";
      input {
        leaf query-begin {
          type uint32 {
            range "16..1048575";
          }
          must "../query-length";
          description
            "Specify the start value for searching for available labels.";
        }

        leaf query-length {
          type uint32 {
            range "0..1048560";
          }
          description
            "Specifies the length of label query segment.";
        }
      }

      output {
        container labels {
          description
            "List of label segment.";
          list label {
            key "label-begin label-end";
            description "Label segment.";
            leaf label-begin {
              type uint32;
              description
                "Start value of a label.";
            }

            leaf label-end {
              type uint32;
              description
                "End value of a label.";
            }
          }  // list label
        }  // container labels
      }
    }  // rpc dynamic-label-statisticss

    rpc label-pre-reserve {
      description
        "Pre-allocation of label resources.";
      input {
        leaf pre-reserve-number {
          type uint32 {
            range "1..65536";
          }
          mandatory true;
          description
            "Number of label resources pre-allocated.";
        }
      }

      output {
        container labels {
          description
            "List of pre-allocated label IDs.";
          list label {
            key "index";
            description
              "Pre-allocated label ID.";
            leaf index {
              type uint32 {
                range "16..1048575";
              }
              description "Label ID.";
            }
          }  // list label
        }  // container labels
      }
    }  // rpc label-pre-reserve
  }  // module huawei-mpls-res