pcep/tunnel/tunnel-provider/src/main/java/org/opendaylight/bgpcep/pcep/tunnel/provider/PCEPTunnelTopologyProvider.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.bgpcep.pcep.tunnel.provider;
   9
  10 import java.util.ArrayList;
  11 import java.util.concurrent.ExecutionException;
  12 import org.checkerframework.checker.lock.qual.GuardedBy;
  13 import org.opendaylight.bgpcep.topology.DefaultTopologyReference;
  14 import org.opendaylight.bgpcep.topology.TopologyReference;
  15 import org.opendaylight.mdsal.binding.api.DataBroker;
  16 import org.opendaylight.mdsal.binding.api.DataTreeIdentifier;
  17 import org.opendaylight.mdsal.binding.api.WriteTransaction;
  18 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.rev181109.TopologyTypes1Builder;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.rev181109.topology.tunnel.pcep.type.TopologyTunnelPcepBuilder;
  21 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
  22 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  23 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  25 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.TopologyTypesBuilder;
  26 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  27 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 public final class PCEPTunnelTopologyProvider extends DefaultTopologyReference implements AutoCloseable {
  32
  33     private static final Logger LOG = LoggerFactory.getLogger(PCEPTunnelTopologyProvider.class);
  34
  35     private final NodeChangedListener ncl;
  36     private final InstanceIdentifier<Node> src;
  37     private final DefaultTopologyReference ref;
  38     private final DataBroker dataBroker;
  39     private final TopologyId tunneltopologyId;
  40     @GuardedBy("this")
  41     private ListenerRegistration<NodeChangedListener> reg;
  42
  43     public PCEPTunnelTopologyProvider(
  44             final DataBroker dataBroker,
  45             final InstanceIdentifier<Topology> pcepTopology,
  46             final TopologyId pcepTopologyId,
  47             final InstanceIdentifier<Topology> tunnelTopology,
  48             final TopologyId tunneltopologyId) {
  49         super(tunnelTopology);
  50         this.dataBroker = dataBroker;
  51         this.tunneltopologyId = tunneltopologyId;
  52         this.ncl = new NodeChangedListener(dataBroker, pcepTopologyId, tunnelTopology);
  53         this.src = pcepTopology.child(Node.class);
  54         this.ref = new DefaultTopologyReference(tunnelTopology);
  55     }
  56
  57     synchronized void init() {
  58         final WriteTransaction tx = this.dataBroker.newWriteOnlyTransaction();
  59         tx.mergeParentStructurePut(LogicalDatastoreType.OPERATIONAL, getTopologyReference().getInstanceIdentifier(),
  60                 new TopologyBuilder().setTopologyId(this.tunneltopologyId)
  61                         .setTopologyTypes(new TopologyTypesBuilder()
  62                                 .addAugmentation(new TopologyTypes1Builder()
  63                                         .setTopologyTunnelPcep(
  64                                                 new TopologyTunnelPcepBuilder().build()).build()).build())
  65                         .setNode(new ArrayList<>()).build());
  66         try {
  67             tx.commit().get();
  68         } catch (final InterruptedException | ExecutionException e) {
  69             LOG.error("Failed to create Tunnel Topology root", e);
  70         }
  71         this.reg = this.ncl.getDataProvider()
  72                 .registerDataTreeChangeListener(DataTreeIdentifier.create(LogicalDatastoreType.OPERATIONAL, this.src),
  73                         this.ncl);
  74     }
  75
  76     public TopologyReference getTopologyReference() {
  77         return this.ref;
  78     }
  79
  80     @Override
  81     public synchronized void close() {
  82         if (this.reg != null) {
  83             this.reg.close();
  84             this.reg = null;
  85         }
  86     }
  87 }