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

   1 /*
   2  * Copyright (c) 2014 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
   9 package org.opendaylight.controller.cluster.datastore;
  10
  11 import akka.actor.PoisonPill;
  12 import akka.actor.Props;
  13 import akka.japi.Creator;
  14 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
  15 import org.opendaylight.controller.cluster.common.actor.AbstractUntypedActor;
  16 import org.opendaylight.controller.cluster.datastore.messages.CloseDataChangeListenerRegistration;
  17 import org.opendaylight.controller.cluster.datastore.messages.CloseDataChangeListenerRegistrationReply;
  18 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeListener;
  19 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  20 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  21 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  22
  23 public class DataChangeListenerRegistrationActor extends AbstractUntypedActor {
  24
  25     private final ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>>
  26         registration;
  27
  28     public DataChangeListenerRegistrationActor(
  29         ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>> registration) {
  30         this.registration = registration;
  31     }
  32
  33     @Override
  34     public void handleReceive(Object message) {
  35         if (message instanceof CloseDataChangeListenerRegistration) {
  36             closeListenerRegistration();
  37         } else {
  38             unknownMessage(message);
  39         }
  40     }
  41
  42     public static Props props(final ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier,
  43             NormalizedNode<?, ?>>> registration) {
  44         return Props.create(new DataChangeListenerRegistrationCreator(registration));
  45     }
  46
  47     private void closeListenerRegistration() {
  48         registration.close();
  49
  50         if (isValidSender(getSender())) {
  51             getSender().tell(CloseDataChangeListenerRegistrationReply.INSTANCE, getSelf());
  52         }
  53
  54         getSelf().tell(PoisonPill.getInstance(), getSelf());
  55     }
  56
  57     private static class DataChangeListenerRegistrationCreator
  58                                             implements Creator<DataChangeListenerRegistrationActor> {
  59         private static final long serialVersionUID = 1L;
  60
  61         @SuppressFBWarnings(value = "SE_BAD_FIELD", justification = "This field is not Serializable but we don't "
  62                 + "create remote instances of this actor and thus don't need it to be Serializable.")
  63         final ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier,
  64                                                            NormalizedNode<?, ?>>> registration;
  65
  66         DataChangeListenerRegistrationCreator(
  67                 ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier,
  68                                                              NormalizedNode<?, ?>>> registration) {
  69             this.registration = registration;
  70         }
  71
  72         @Override
  73         public DataChangeListenerRegistrationActor create() throws Exception {
  74             return new DataChangeListenerRegistrationActor(registration);
  75         }
  76     }
  77 }