opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/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.datastore.entityownership;
   9
  10 import akka.actor.Props;
  11 import akka.japi.Creator;
  12 import com.google.common.base.Preconditions;
  13 import org.opendaylight.controller.cluster.common.actor.AbstractUntypedActor;
  14 import org.opendaylight.mdsal.eos.dom.api.DOMEntityOwnershipChange;
  15 import org.opendaylight.mdsal.eos.dom.api.DOMEntityOwnershipListener;
  16
  17 /**
  18  * An actor which is responsible for notifying an EntityOwnershipListener of changes.
  19  *
  20  * @author Thomas Pantelis
  21  */
  22 class EntityOwnershipListenerActor extends AbstractUntypedActor {
  23     private final DOMEntityOwnershipListener listener;
  24
  25     private EntityOwnershipListenerActor(DOMEntityOwnershipListener listener) {
  26         this.listener = listener;
  27     }
  28
  29     @Override
  30     protected void handleReceive(Object message) {
  31         if (message instanceof DOMEntityOwnershipChange) {
  32             onEntityOwnershipChanged((DOMEntityOwnershipChange)message);
  33         } else {
  34             unknownMessage(message);
  35         }
  36     }
  37
  38     @SuppressWarnings("checkstyle:IllegalCatch")
  39     private void onEntityOwnershipChanged(DOMEntityOwnershipChange change) {
  40         LOG.debug("Notifying EntityOwnershipListener {}: {}", listener, change);
  41
  42         try {
  43             listener.ownershipChanged(change);
  44         } catch (Exception e) {
  45             LOG.error("Error notifying listener {}", listener, e);
  46         }
  47     }
  48
  49     static Props props(DOMEntityOwnershipListener listener) {
  50         return Props.create(new EntityOwnershipListenerCreator(listener));
  51     }
  52
  53     private static final class EntityOwnershipListenerCreator implements Creator<EntityOwnershipListenerActor> {
  54         private static final long serialVersionUID = 1L;
  55
  56         private final DOMEntityOwnershipListener listener;
  57
  58         EntityOwnershipListenerCreator(DOMEntityOwnershipListener listener) {
  59             this.listener = Preconditions.checkNotNull(listener);
  60         }
  61
  62         @Override
  63         public EntityOwnershipListenerActor create() {
  64             return new EntityOwnershipListenerActor(listener);
  65         }
  66     }
  67 }