2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
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
9 package org.opendaylight.controller.cluster.datastore;
11 import akka.actor.ActorRef;
12 import akka.actor.ActorSystem;
13 import akka.cluster.Cluster;
14 import akka.cluster.ClusterEvent;
15 import com.google.common.base.Preconditions;
17 public class ClusterWrapperImpl implements ClusterWrapper {
18 private final Cluster cluster;
19 private final String currentMemberName;
21 public ClusterWrapperImpl(ActorSystem actorSystem){
22 Preconditions.checkNotNull(actorSystem, "actorSystem should not be null");
24 cluster = Cluster.get(actorSystem);
26 Preconditions.checkState(cluster.getSelfRoles().size() > 0,
27 "No akka roles were specified\n" +
28 "One way to specify the member name is to pass a property on the command line like so\n" +
29 " -Dakka.cluster.roles.0=member-3\n" +
30 "member-3 here would be the name of the member"
33 currentMemberName = (String) cluster.getSelfRoles().toArray()[0];
37 public void subscribeToMemberEvents(ActorRef actorRef){
38 Preconditions.checkNotNull(actorRef, "actorRef should not be null");
40 cluster.subscribe(actorRef, ClusterEvent.initialStateAsEvents(),
41 ClusterEvent.MemberEvent.class,
42 ClusterEvent.UnreachableMember.class);
45 public String getCurrentMemberName() {
46 return currentMemberName;