module netconf-node-topology {
    namespace "urn:opendaylight:netconf-node-topology";
    prefix "nettop";

    import network-topology { prefix nt; revision-date 2013-10-21; }
    import yang-ext { prefix ext; revision-date "2013-07-09";}
    import ietf-inet-types { prefix inet; revision-date "2010-09-24"; }

    revision "2015-01-14" {
        description "Initial revision of Topology model";
    }

    augment "/nt:network-topology/nt:topology/nt:topology-types" {
        container topology-netconf {
        }
    }

    grouping netconf-node-fields {
        leaf connection-status {
            type enumeration {
                enum connecting;
                enum connected;
                enum unable-to-connect;
            }
        }

        leaf host {
            type inet:host;
        }

        leaf port {
            type inet:port-number;
        }

        leaf connected-message {
            type string;
        }

        container available-capabilities {
            leaf-list available-capability {
                type string;
            }
        }

        container unavailable-capabilities {
            list unavailable-capability {
                leaf capability {
                    type string;
                }

                leaf failure-reason {
                    type enumeration {
                        enum missing-source;
                        enum unable-to-resolve;
                    }
                }
            }
        }

        container pass-through {
            when "../connection-status = connected";
            description
                "When the underlying node is connected, its NETCONF context
                is available verbatim under this container through the
                mount extension.";
        }
    }

    augment "/nt:network-topology/nt:topology/nt:node" {
        when "../../nt:topology-types/topology-netconf";
        ext:augment-identifier "netconf-node";

        uses netconf-node-fields;
    }
}