mappingservice/neutron/src/main/java/org/opendaylight/lispflowmapping/neutron/intenthandler/listener/VbridgeTopologyListener.java

   1 /*
   2  * Copyright (c) 2017 Cisco Systems, Inc.  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.lispflowmapping.neutron.intenthandler.listener;
   9
  10 import com.google.common.base.Preconditions;
  11 import java.util.Collection;
  12 import java.util.Map;
  13 import java.util.concurrent.ConcurrentHashMap;
  14 import javax.annotation.Nonnull;
  15 import org.checkerframework.checker.lock.qual.GuardedBy;
  16 import org.opendaylight.mdsal.binding.api.ClusteredDataTreeChangeListener;
  17 import org.opendaylight.mdsal.binding.api.DataBroker;
  18 import org.opendaylight.mdsal.binding.api.DataObjectModification;
  19 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  20 import org.opendaylight.mdsal.binding.api.MountPointService;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.network.topology.topology.topology.types.VbridgeTopology;
  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.TopologyKey;
  24 import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 /**
  29  * Created by Shakib Ahmed on 1/19/17.
  30  */
  31 public class VbridgeTopologyListener implements ClusteredDataTreeChangeListener<VbridgeTopology>, AutoCloseable {
  32     private static final Logger LOG = LoggerFactory.getLogger(VbridgeTopologyListener.class);
  33
  34     private final DataBroker dataBroker;
  35     private final MountPointService mountPointService;
  36
  37     @GuardedBy("this")
  38     private final Map<TopologyKey, VppEndpointListener> domains = new ConcurrentHashMap<>();
  39
  40     public VbridgeTopologyListener(final DataBroker dataBroker,
  41                                    final MountPointService mountPointService) {
  42         this.dataBroker = Preconditions.checkNotNull(dataBroker);
  43         this.mountPointService = Preconditions.checkNotNull(mountPointService);
  44     }
  45
  46     @Override
  47     public synchronized void onDataTreeChanged(@Nonnull Collection<DataTreeModification<VbridgeTopology>> changes) {
  48         for (DataTreeModification<VbridgeTopology> topologyData : changes) {
  49             final KeyedInstanceIdentifier<Topology, TopologyKey> topologyInstanceIdentifier =
  50                     (KeyedInstanceIdentifier<Topology, TopologyKey>) topologyData
  51                                                                         .getRootPath()
  52                                                                         .getRootIdentifier()
  53                                                                         .firstIdentifierOf(Topology.class);
  54
  55             Preconditions.checkArgument(!topologyInstanceIdentifier
  56                     .isWildcarded(), "Wildcard topology %s is not supported",
  57                     topologyInstanceIdentifier);
  58
  59             final DataObjectModification<VbridgeTopology> modification =  topologyData.getRootNode();
  60
  61             switch (modification.getModificationType()) {
  62                 case DELETE:
  63                     handleVbridgeTopologyDelete(topologyInstanceIdentifier);
  64                     break;
  65                 case WRITE:
  66                     handleVbridgeTopologyWrite(topologyInstanceIdentifier);
  67                     break;
  68                 default:
  69                     LOG.warn("Ignoring unhandled modification type {}", modification.getModificationType());
  70                     break;
  71
  72             }
  73         }
  74     }
  75
  76     private void handleVbridgeTopologyDelete(KeyedInstanceIdentifier<Topology, TopologyKey> topology) {
  77         VppEndpointListener endpointListener = domains.get(topology.getKey());
  78         endpointListener.close();
  79         domains.remove(topology.getKey());
  80     }
  81
  82     private void handleVbridgeTopologyWrite(KeyedInstanceIdentifier<Topology, TopologyKey> topology) {
  83         if (domains.containsKey(topology.getKey())) {
  84             domains.get(topology.getKey()).close();
  85             domains.remove(topology.getKey());
  86         }
  87         domains.put(topology.getKey(), new VppEndpointListener(dataBroker, mountPointService, topology));
  88     }
  89
  90     @Override
  91     public void close() {
  92         domains.forEach((topologyKey, vppEndpointListener) -> {
  93             vppEndpointListener.close();
  94         });
  95     }
  96 }