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
  12 import java.util.Collection;
  13 import java.util.Map;
  14 import java.util.concurrent.ConcurrentHashMap;
  15 import javax.annotation.Nonnull;
  16
  17 import org.checkerframework.checker.lock.qual.GuardedBy;
  18 import org.opendaylight.controller.md.sal.binding.api.ClusteredDataTreeChangeListener;
  19 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  20 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
  21 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
  22 import org.opendaylight.controller.md.sal.binding.api.MountPointService;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.network.topology.topology.topology.types.VbridgeTopology;
  24 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  25 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  26 import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 /**
  31  * Created by Shakib Ahmed on 1/19/17.
  32  */
  33 public class VbridgeTopologyListener implements ClusteredDataTreeChangeListener<VbridgeTopology>, AutoCloseable {
  34     private static final Logger LOG = LoggerFactory.getLogger(VbridgeTopologyListener.class);
  35
  36     private DataBroker dataBroker;
  37     private MountPointService mountPointService;
  38
  39     @GuardedBy("this")
  40     private final Map<TopologyKey, VppEndpointListener> domains = new ConcurrentHashMap<>();
  41
  42     public VbridgeTopologyListener(final DataBroker dataBroker,
  43                                    final MountPointService mountPointService) {
  44         this.dataBroker = Preconditions.checkNotNull(dataBroker);
  45         this.mountPointService = Preconditions.checkNotNull(mountPointService);
  46     }
  47
  48     @Override
  49     public synchronized void onDataTreeChanged(@Nonnull Collection<DataTreeModification<VbridgeTopology>> changes) {
  50         for (DataTreeModification<VbridgeTopology> topologyData : changes) {
  51             final KeyedInstanceIdentifier<Topology, TopologyKey> topologyInstanceIdentifier =
  52                     (KeyedInstanceIdentifier<Topology, TopologyKey>) topologyData
  53                                                                         .getRootPath()
  54                                                                         .getRootIdentifier()
  55                                                                         .firstIdentifierOf(Topology.class);
  56
  57             Preconditions.checkArgument(!topologyInstanceIdentifier
  58                     .isWildcarded(), "Wildcard topology %s is not supported",
  59                     topologyInstanceIdentifier);
  60
  61             final DataObjectModification<VbridgeTopology> modification =  topologyData.getRootNode();
  62
  63             switch (modification.getModificationType()) {
  64                 case DELETE:
  65                     handleVbridgeTopologyDelete(topologyInstanceIdentifier);
  66                     break;
  67                 case WRITE:
  68                     handleVbridgeTopologyWrite(topologyInstanceIdentifier);
  69                     break;
  70                 default:
  71                     LOG.warn("Ignoring unhandled modification type {}", modification.getModificationType());
  72                     break;
  73
  74             }
  75         }
  76     }
  77
  78     private void handleVbridgeTopologyDelete(KeyedInstanceIdentifier<Topology, TopologyKey> topology) {
  79         VppEndpointListener endpointListener = domains.get(topology.getKey());
  80         endpointListener.close();
  81         domains.remove(topology.getKey());
  82     }
  83
  84     private void handleVbridgeTopologyWrite(KeyedInstanceIdentifier<Topology, TopologyKey> topology) {
  85         if (domains.containsKey(topology.getKey())) {
  86             domains.get(topology.getKey()).close();
  87             domains.remove(topology.getKey());
  88         }
  89         domains.put(topology.getKey(), new VppEndpointListener(dataBroker, mountPointService, topology));
  90     }
  91
  92     @Override
  93     public void close() {
  94         domains.forEach((topologyKey, vppEndpointListener) -> {
  95             vppEndpointListener.close();
  96         });
  97     }
  98 }