module abstract-topology {
    yang-version 1;
    namespace "urn:model:abstract:topology";
    prefix "tp";

    revision "2013-02-08" {
    }

    typedef node-id-ref {
        type leafref {
            path "/tp:topology/tp:network-nodes/tp:network-node/tp:node-id";
        }
    }

    typedef link-id-ref {
        type leafref {
            path "/tp:topology/tp:network-links/tp:network-link/tp:link-id";
        }
    }

    typedef uri {
        type string;
    }

    container topology {

        leaf topology-id {
            type uri;
        }

        container network-nodes {
            list network-node {
                key "node-id";

                leaf node-id {
                    type uri;
                }

                container attributes {
                }
            }
        }

        container network-links {
            list network-link {
                key "link-id";

                leaf link-id {
                    type uri;
                    description "";
                }

                container source-node {
                    leaf id {
                        type node-id-ref;
                    }
                }

                container destination-node {
                    leaf id {
                        type node-id-ref;
                    }
                }

                container attributes {
                }
            }
        }
    }

}