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.cluster.datastore.messages.RegisterChangeListenerReply;
  15 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeListener;
  16 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  17 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  18
  19 final class DataChangeListenerSupport extends AbstractDataListenerSupport<
  20         AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>, RegisterChangeListener,
  21             DelayedDataChangeListenerRegistration> {
  22
  23     DataChangeListenerSupport(final Shard shard) {
  24         super(shard);
  25     }
  26
  27     @Override
  28     void doRegistration(final RegisterChangeListener message, final ActorRef registrationActor) {
  29         final ActorSelection listenerActor = processListenerRegistrationMessage(message);
  30
  31         AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> listener =
  32                 new DataChangeListenerProxy(listenerActor);
  33
  34         log().debug("{}: Registering for path {}", persistenceId(), message.getPath());
  35
  36         final ShardDataTree shardDataTree = getShard().getDataStore();
  37         shardDataTree.registerDataChangeListener(message.getPath(), listener, message.getScope(),
  38                 shardDataTree.readCurrentData(), registration -> registrationActor.tell(
  39                         new DataTreeNotificationListenerRegistrationActor.SetRegistration(registration, () ->
  40                             removeListenerActor(listenerActor)), ActorRef.noSender()));
  41     }
  42
  43     @Override
  44     protected DelayedDataChangeListenerRegistration newDelayedListenerRegistration(RegisterChangeListener message,
  45             ActorRef registrationActor) {
  46         return new DelayedDataChangeListenerRegistration(message, registrationActor);
  47     }
  48
  49     @Override
  50     protected Object newRegistrationReplyMessage(ActorRef registrationActor) {
  51         return new RegisterChangeListenerReply(registrationActor);
  52     }
  53
  54     @Override
  55     protected String logName() {
  56         return "registerDataChangeListener";
  57     }
  58 }