opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/DataChangeListenerSupport.java

   1 /*
   2  * Copyright (c) 2015 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.cluster.datastore;
   9
  10 import akka.actor.ActorRef;
  11 import akka.actor.ActorSelection;
  12 import org.opendaylight.controller.cluster.datastore.actors.DataTreeNotificationListenerRegistrationActor;
  13 import org.opendaylight.controller.cluster.datastore.messages.RegisterChangeListener;
  14 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeListener;
  15 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  16 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  17
  18 final class DataChangeListenerSupport extends AbstractDataListenerSupport<
  19         AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>, RegisterChangeListener> {
  20
  21     DataChangeListenerSupport(final Shard shard) {
  22         super(shard);
  23     }
  24
  25     @Override
  26     void doRegistration(final RegisterChangeListener message, final ActorRef registrationActor) {
  27         final ActorSelection listenerActor = processListenerRegistrationMessage(message);
  28
  29         AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> listener =
  30                 new DataChangeListenerProxy(listenerActor);
  31
  32         log().debug("{}: Registering for path {}", persistenceId(), message.getPath());
  33
  34         final ShardDataTree shardDataTree = getShard().getDataStore();
  35         shardDataTree.registerDataChangeListener(message.getPath(), listener, message.getScope(),
  36                 shardDataTree.readCurrentData(), registration -> registrationActor.tell(
  37                         new DataTreeNotificationListenerRegistrationActor.SetRegistration(registration, () ->
  38                             removeListenerActor(listenerActor)), ActorRef.noSender()));
  39     }
  40
  41     @Override
  42     protected String logName() {
  43         return "registerDataChangeListener";
  44     }
  45 }