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 org.checkerframework.checker.lock.qual.GuardedBy;
  15 import org.opendaylight.mdsal.binding.api.ClusteredDataTreeChangeListener;
  16 import org.opendaylight.mdsal.binding.api.DataBroker;
  17 import org.opendaylight.mdsal.binding.api.DataObjectModification;
  18 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  19 import org.opendaylight.mdsal.binding.api.MountPointService;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.network.topology.topology.topology.types.VbridgeTopology;
  21 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  22 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  23 import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 /**
  28  * Created by Shakib Ahmed on 1/19/17.
  29  */
  30 public class VbridgeTopologyListener implements ClusteredDataTreeChangeListener<VbridgeTopology>, AutoCloseable {
  31     private static final Logger LOG = LoggerFactory.getLogger(VbridgeTopologyListener.class);
  32
  33     private final DataBroker dataBroker;
  34     private final MountPointService mountPointService;
  35
  36     @GuardedBy("this")
  37     private final Map<TopologyKey, VppEndpointListener> domains = new ConcurrentHashMap<>();
  38
  39     public VbridgeTopologyListener(final DataBroker dataBroker,
  40                                    final MountPointService mountPointService) {
  41         this.dataBroker = Preconditions.checkNotNull(dataBroker);
  42         this.mountPointService = Preconditions.checkNotNull(mountPointService);
  43     }
  44
  45     @Override
  46     public synchronized void onDataTreeChanged(Collection<DataTreeModification<VbridgeTopology>> changes) {
  47         for (DataTreeModification<VbridgeTopology> topologyData : changes) {
  48             final KeyedInstanceIdentifier<Topology, TopologyKey> topologyInstanceIdentifier =
  49                     (KeyedInstanceIdentifier<Topology, TopologyKey>) topologyData
  50                                                                         .getRootPath()
  51                                                                         .getRootIdentifier()
  52                                                                         .firstIdentifierOf(Topology.class);
  53
  54             Preconditions.checkArgument(!topologyInstanceIdentifier
  55                     .isWildcarded(), "Wildcard topology %s is not supported",
  56                     topologyInstanceIdentifier);
  57
  58             final DataObjectModification<VbridgeTopology> modification =  topologyData.getRootNode();
  59
  60             switch (modification.getModificationType()) {
  61                 case DELETE:
  62                     handleVbridgeTopologyDelete(topologyInstanceIdentifier);
  63                     break;
  64                 case WRITE:
  65                     handleVbridgeTopologyWrite(topologyInstanceIdentifier);
  66                     break;
  67                 default:
  68                     LOG.warn("Ignoring unhandled modification type {}", modification.getModificationType());
  69                     break;
  70
  71             }
  72         }
  73     }
  74
  75     private void handleVbridgeTopologyDelete(KeyedInstanceIdentifier<Topology, TopologyKey> topology) {
  76         VppEndpointListener endpointListener = domains.get(topology.getKey());
  77         endpointListener.close();
  78         domains.remove(topology.getKey());
  79     }
  80
  81     private void handleVbridgeTopologyWrite(KeyedInstanceIdentifier<Topology, TopologyKey> topology) {
  82         if (domains.containsKey(topology.getKey())) {
  83             domains.get(topology.getKey()).close();
  84             domains.remove(topology.getKey());
  85         }
  86         domains.put(topology.getKey(), new VppEndpointListener(dataBroker, mountPointService, topology));
  87     }
  88
  89     @Override
  90     public void close() {
  91         domains.forEach((topologyKey, vppEndpointListener) -> {
  92             vppEndpointListener.close();
  93         });
  94     }
  95 }