itm/itm-impl/src/main/java/org/opendaylight/genius/itm/listeners/cache/StateTunnelListListener.java

   1 /*
   2  * Copyright (c) 2016 Ericsson India Global Services Pvt Ltd. 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
   9 package org.opendaylight.genius.itm.listeners.cache;
  10
  11 import javax.annotation.PostConstruct;
  12 import javax.annotation.PreDestroy;
  13 import javax.inject.Inject;
  14 import javax.inject.Singleton;
  15 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  16 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  17 import org.opendaylight.genius.datastoreutils.AsyncClusteredDataTreeChangeListenerBase;
  18 import org.opendaylight.genius.itm.globals.ITMConstants;
  19 import org.opendaylight.genius.utils.cache.DataStoreCache;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.TunnelsState;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.op.rev160406.tunnels_state.StateTunnelList;
  22 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 @Singleton
  27 public class StateTunnelListListener extends AsyncClusteredDataTreeChangeListenerBase<StateTunnelList,StateTunnelListListener> implements AutoCloseable{
  28     private static final Logger LOG = LoggerFactory.getLogger(StateTunnelListListener.class);
  29     private final DataBroker broker;
  30
  31     /**
  32      * Responsible for listening to tunnel interface state change
  33      *
  34      */
  35     @Inject
  36      public StateTunnelListListener(final DataBroker dataBroker) {
  37          super(StateTunnelList.class, StateTunnelListListener.class);
  38          DataStoreCache.create(ITMConstants.TUNNEL_STATE_CACHE_NAME);
  39              this.broker = dataBroker;
  40          try {
  41              registerListener(LogicalDatastoreType.OPERATIONAL, this.broker);
  42           } catch (final Exception e) {
  43              LOG.error("StateTunnelListListener DataChange listener registration fail!", e);
  44          }
  45     }
  46
  47     @PostConstruct
  48     public void start() throws Exception {
  49         LOG.info("Tunnel Interface State Listener Started");
  50     }
  51
  52     @Override
  53     @PreDestroy
  54     public void close() throws Exception {
  55         LOG.info("Tunnel Interface State Listener Closed");
  56     }
  57
  58     @Override
  59     protected void remove(InstanceIdentifier<StateTunnelList> identifier, StateTunnelList del) {
  60         DataStoreCache.remove(ITMConstants.TUNNEL_STATE_CACHE_NAME, del.getTunnelInterfaceName());
  61     }
  62
  63     @Override
  64     protected void update(InstanceIdentifier<StateTunnelList> identifier, StateTunnelList original,
  65     StateTunnelList update) {
  66         DataStoreCache.add(ITMConstants.TUNNEL_STATE_CACHE_NAME, update.getTunnelInterfaceName(), update);
  67     }
  68
  69     @Override
  70     protected void add(InstanceIdentifier<StateTunnelList> identifier, StateTunnelList add) {
  71         DataStoreCache.add(ITMConstants.TUNNEL_STATE_CACHE_NAME, add.getTunnelInterfaceName(), add);
  72     }
  73
  74     @Override
  75     protected StateTunnelListListener getDataTreeChangeListener() {
  76         return this;
  77     }
  78
  79     @Override
  80     protected InstanceIdentifier<StateTunnelList> getWildCardPath() {
  81         return InstanceIdentifier.builder(TunnelsState.class).
  82                 child(StateTunnelList.class).build();
  83     }
  84
  85 }