module tailf-netconf-extensions {

    yang-version 1.1;

    namespace
      "http://tail-f.com/ns/netconf/extensions";

    prefix tfnce;

    import ietf-netconf {
      prefix nc;
    }
    import tailf-common {
      prefix tailf;
    }

    organization "Tail-f Systems";

    description
      "This module contains Tail-f specific optional augments and RPC:s.

     Extends the 'lock' RPC with a parameter 'wait-time'.

     The RPC 'has-children' provides the means for a client to prune
     the data-model when traversing the database.

     The RPC 'get-attributes' retrieves attributes for a single data
     node in an efficient manner.

     Copyright 2019 Cisco Systems, Inc.
     All rights reserved.
     Permission is hereby granted to redistribute this file without
     modification.";

    revision "2019-04-09" {
      description
        "Released as part of ConfD-7.1

       Added 'wait-time' support to the 'lock' RPC.";
    }

    revision "2015-06-16" {
      description "Initial revision.";
    }

    tailf:export "netconf";

    rpc has-children {
      description
        "Used to find out whether a container or list instance is empty or
       not.  Returns false if and only if the sub-tree is guaranteed to not
       contain any configuration data, otherwise 'maybe'.";
      input {
        leaf path {
          type instance-identifier;
        }
      }

      output {
        leaf result {
          type enumeration {
            enum "maybe" {
              value 0;
              description
                "Data may exist below <path>.";
            }
            enum "false" {
              value 1;
              description
                "No data exists below <path>.";
            }
          }
        }
      }
    }  // rpc has-children

    rpc get-attributes {
      description
        "Retrieves the meta-data attributes for a data node.
       The attributes are returned as XML attributes
       in the <result> leaf.";
      input {
        leaf path {
          type instance-identifier;
        }
      }

      output {
        leaf result {
          type enumeration {
            enum "ok" {
              value 0;
              description
                "Attribute list in meta-data of this node.";
            }
            enum "not_found" {
              value 1;
              description
                "Data node not found.";
            }
          }
        }
      }
    }  // rpc get-attributes
  }  // module tailf-netconf-extensions