opendaylight/md-sal/compatibility/sal-compatibility/src/main/java/org/opendaylight/controller/sal/compatibility/topology/TopologyProvider.java

   1 /*
   2  * Copyright (c) 2014 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.controller.sal.compatibility.topology;
   9
  10 import org.opendaylight.controller.sal.binding.api.data.DataChangeListener;
  11 import org.opendaylight.controller.sal.binding.api.data.DataProviderService;
  12 import org.opendaylight.controller.sal.topology.IPluginOutTopologyService;
  13 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  14 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
  15 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  16 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  17 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Link;
  18 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  19 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  20 import org.slf4j.Logger;
  21 import org.slf4j.LoggerFactory;
  22
  23 import com.google.common.base.Preconditions;
  24
  25 public class TopologyProvider implements AutoCloseable{
  26     private static final Logger LOG = LoggerFactory.getLogger(TopologyProvider.class);
  27     private static final InstanceIdentifier<Link> PATH = InstanceIdentifier.builder(NetworkTopology.class)
  28             .child(Topology.class ,new TopologyKey(new TopologyId("flow:1")))
  29             .child(Link.class)
  30             .toInstance();
  31     private TopologyCommitHandler commitHandler;
  32
  33     private ListenerRegistration<DataChangeListener> listenerRegistration;
  34     private IPluginOutTopologyService topologyPublisher;
  35     private DataProviderService dataService;
  36
  37     public void startAdapter() {
  38         if(dataService == null){
  39             LOG.error("dataService not set");
  40             return;
  41         }
  42         commitHandler = new TopologyCommitHandler(dataService,topologyPublisher);
  43         listenerRegistration = dataService.registerDataChangeListener(PATH, commitHandler);
  44         LOG.info("TopologyProvider started");
  45     }
  46
  47     @Override
  48     public void close() {
  49         if (listenerRegistration != null) {
  50             listenerRegistration.close();
  51         }
  52     }
  53
  54     void setTopologyPublisher(final IPluginOutTopologyService topologyPublisher) {
  55         this.topologyPublisher = topologyPublisher;
  56         if (commitHandler != null) {
  57             commitHandler.setTopologyPublisher(topologyPublisher);
  58         }
  59     }
  60
  61     public void setDataService(final DataProviderService dataService) {
  62         this.dataService = Preconditions.checkNotNull(dataService);
  63     }
  64 }