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 org.opendaylight.controller.cluster.common.actor.AbstractUntypedActor;
  15 import org.opendaylight.controller.cluster.datastore.messages.CloseDataChangeListenerRegistration;
  16 import org.opendaylight.controller.cluster.datastore.messages.CloseDataChangeListenerRegistrationReply;
  17 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeListener;
  18 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  19 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  20 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  21
  22 public class DataChangeListenerRegistrationActor extends AbstractUntypedActor {
  23
  24     private final ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>>
  25         registration;
  26
  27     public DataChangeListenerRegistrationActor(
  28         ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>> registration) {
  29         this.registration = registration;
  30     }
  31
  32     @Override
  33     public void handleReceive(Object message) throws Exception {
  34         if (message instanceof CloseDataChangeListenerRegistration) {
  35             closeListenerRegistration();
  36         }
  37     }
  38
  39     public static Props props(
  40         final ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>> registration) {
  41         return Props.create(new DataChangeListenerRegistrationCreator(registration));
  42     }
  43
  44     private void closeListenerRegistration() {
  45         registration.close();
  46         getSender().tell(CloseDataChangeListenerRegistrationReply.INSTANCE, getSelf());
  47         getSelf().tell(PoisonPill.getInstance(), getSelf());
  48     }
  49
  50     private static class DataChangeListenerRegistrationCreator
  51                                             implements Creator<DataChangeListenerRegistrationActor> {
  52         private static final long serialVersionUID = 1L;
  53         final ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier,
  54                                                            NormalizedNode<?, ?>>> registration;
  55
  56         DataChangeListenerRegistrationCreator(
  57                 ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier,
  58                                                              NormalizedNode<?, ?>>> registration) {
  59             this.registration = registration;
  60         }
  61
  62         @Override
  63         public DataChangeListenerRegistrationActor create() throws Exception {
  64             return new DataChangeListenerRegistrationActor(registration);
  65         }
  66     }
  67 }