opendaylight/md-sal/sal-distributed-eos/src/main/java/org/opendaylight/controller/cluster/entityownership/EntityOwnershipListenerActor.java

   1 /*
   2  * Copyright (c) 2015 Brocade Communications 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.entityownership;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  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.mdsal.eos.dom.api.DOMEntityOwnershipChange;
  17 import org.opendaylight.mdsal.eos.dom.api.DOMEntityOwnershipListener;
  18
  19 /**
  20  * An actor which is responsible for notifying an EntityOwnershipListener of changes.
  21  *
  22  * @author Thomas Pantelis
  23  */
  24 final class EntityOwnershipListenerActor extends AbstractUntypedActor {
  25     private final DOMEntityOwnershipListener listener;
  26
  27     private EntityOwnershipListenerActor(final DOMEntityOwnershipListener listener) {
  28         this.listener = listener;
  29     }
  30
  31     @Override
  32     protected void handleReceive(final Object message) {
  33         if (message instanceof DOMEntityOwnershipChange) {
  34             onEntityOwnershipChanged((DOMEntityOwnershipChange)message);
  35         } else {
  36             unknownMessage(message);
  37         }
  38     }
  39
  40     @SuppressWarnings("checkstyle:IllegalCatch")
  41     private void onEntityOwnershipChanged(final DOMEntityOwnershipChange change) {
  42         LOG.debug("Notifying EntityOwnershipListener {}: {}", listener, change);
  43
  44         try {
  45             listener.ownershipChanged(change);
  46         } catch (Exception e) {
  47             LOG.error("Error notifying listener {}", listener, e);
  48         }
  49     }
  50
  51     static Props props(final DOMEntityOwnershipListener listener) {
  52         return Props.create(EntityOwnershipListenerActor.class, new EntityOwnershipListenerCreator(listener));
  53     }
  54
  55     private static final class EntityOwnershipListenerCreator implements Creator<EntityOwnershipListenerActor> {
  56         private static final long serialVersionUID = 1L;
  57
  58         @SuppressFBWarnings(value = "SE_BAD_FIELD", justification = "This field is not Serializable but we don't "
  59                 + "create remote instances of this actor and thus don't need it to be Serializable.")
  60         private final DOMEntityOwnershipListener listener;
  61
  62         EntityOwnershipListenerCreator(final DOMEntityOwnershipListener listener) {
  63             this.listener = requireNonNull(listener);
  64         }
  65
  66         @Override
  67         public EntityOwnershipListenerActor create() {
  68             return new EntityOwnershipListenerActor(listener);
  69         }
  70     }
  71 }