opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/actors/client/SavingClientActorBehavior.java

   1 /*
   2  * Copyright (c) 2016 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.actors.client;
   9
  10 import akka.persistence.SaveSnapshotFailure;
  11 import akka.persistence.SaveSnapshotSuccess;
  12 import com.google.common.base.Preconditions;
  13 import org.opendaylight.controller.cluster.access.concepts.ClientIdentifier;
  14 import org.slf4j.Logger;
  15 import org.slf4j.LoggerFactory;
  16
  17 /**
  18  * @author Robert Varga
  19  */
  20 final class SavingClientActorBehavior extends RecoveredClientActorBehavior<InitialClientActorContext> {
  21     private static final Logger LOG = LoggerFactory.getLogger(SavingClientActorBehavior.class);
  22     private final ClientIdentifier myId;
  23
  24     SavingClientActorBehavior(final InitialClientActorContext context, final ClientIdentifier nextId) {
  25         super(context);
  26         this.myId = Preconditions.checkNotNull(nextId);
  27     }
  28
  29     @Override
  30     AbstractClientActorBehavior<?> onReceiveCommand(final Object command) {
  31         if (command instanceof SaveSnapshotFailure) {
  32             LOG.error("{}: failed to persist state", persistenceId(), ((SaveSnapshotFailure) command).cause());
  33             return null;
  34         } else if (command instanceof SaveSnapshotSuccess) {
  35             context().unstash();
  36             return context().createBehavior(myId);
  37         } else {
  38             LOG.debug("{}: stashing command {}", persistenceId(), command);
  39             context().stash();
  40             return this;
  41         }
  42     }
  43 }