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module odl-pcep-stateful-stats {
    yang-version 1;
    namespace "urn:opendaylight:params:xml:ns:yang:pcep:stateful:stats";
    prefix pspc;

    import network-topology { prefix nt; revision-date 2013-10-21; }
    import network-topology-pcep { prefix pn; revision-date 2022-07-30; }
    import yang-ext { prefix ext; revision-date 2013-07-09; }
    import network-pcep-topology-stats { prefix npts; revision-date 2018-11-09; }
    import odl-pcep-sync-optimizations { prefix opso; revision-date 2020-07-20; }
    import pcep-topology-stats-rpc { prefix ptsr; revision-date 2019-03-21; }

    description
        "This module contains the PCEP Stateful stats YANG definitions for
         PCEP Topology Node Stats.
         Copyright (c)2017 AT&T Services, Inc. All rights reserved.;

         This program and the accompanying materials are made available
         under the terms of the Eclipse Public License v1.0 which
         accompanies this distribution, and is available at
         http://www.eclipse.org/legal/epl-v10.html";

    organization "AT&T Services, Inc.";
    contact "Claudio D. Gasparini <claudio.gasparini@pantheon.sk>";

    revision "2018-11-09" {
        description
            "P2MP extension.";
        reference "RFC8306";
    }

    revision "2017-11-13" {
        description
            "Initial revision.";
    }

    grouping stateful-messages-grouping {
        description "The statistics of sent/received PCEP stateful messages.";
        leaf last-received-rpt-msg-timestamp {
            description "The timestamp of last received PCRpt message.";
            type uint32;
            default 0;
        }

        leaf received-rpt-msg-count {
            description "The number of received PcRpt messages.";
            type uint32;
            default 0;
        }

        leaf sent-upd-msg-count {
            description "The number of sent PCUpd messages.";
            type uint32;
            default 0;
        }

        leaf sent-init-msg-count {
            description "The number of sent PCInitiate messages.";
            type uint32;
            default 0;
        }
    }

    augment "/nt:network-topology/nt:topology/nt:node/npts:pcep-session-state/npts:messages" {
        when "../../../nt:topology-types/pn:topology-pcep";
        ext:augment-identifier stateful-messages-stats-aug;
        description "Augment Pcep topology node with Stateful session stats";

        uses stateful-messages-grouping;
    }

    augment "/ptsr:get-stats/ptsr:output/ptsr:topology/ptsr:node/ptsr:pcep-session-state/ptsr:messages" {
        ext:augment-identifier stateful-messages-rpc-aug;
        description "Augment Pcep session stats RPC output with Stateful session stats";

        uses stateful-messages-grouping;
    }

    grouping stateful-preferences {
        leaf instantiation {
            description "Represents peer's instantiation capability.";
            type boolean;
            default "false";
        }

        leaf stateful {
            description "Represents peer's stateful/stateless capability.";
            type boolean;
            default "false";
        }

        leaf active {
            description "Represents peer's LSP update capability.";
            type boolean;
            default "false";
        }
    }

    augment "/nt:network-topology/nt:topology/nt:node/npts:pcep-session-state/npts:peer-capabilities" {
        when "../../../nt:topology-types/pn:topology-pcep";
        ext:augment-identifier stateful-capabilities-stats-aug;
        description "Remote peer's (PCC) advertised stateful capabilities.";

        uses stateful-preferences;
    }

    augment "/ptsr:get-stats/ptsr:output/ptsr:topology/ptsr:node/ptsr:pcep-session-state/ptsr:peer-capabilities" {
        ext:augment-identifier stateful-capabilities-rpc-aug;
        description "Augment Pcep session stats RPC output with Remote peer's (PCC) advertised stateful capabilities.";

        uses stateful-preferences;
    }

    augment "/nt:network-topology/nt:topology/nt:node/npts:pcep-session-state/npts:local-pref" {
        when "../../../nt:topology-types/pn:topology-pcep";
        ext:augment-identifier pcep-entity-id-stats-aug;
        description "PCEP Entity Identifier";

        uses opso:speaker-entity-id;
    }

    augment "/ptsr:get-stats/ptsr:output/ptsr:topology/ptsr:node/ptsr:pcep-session-state/ptsr:local-pref" {
        ext:augment-identifier pcep-entity-id-rpc-aug;
        description "Augment Pcep session stats RPC output with PCEP Entity Identifier";

        uses opso:speaker-entity-id;
    }
}