opendaylight/md-sal/sal-distributed-datastore/src/test/java/org/opendaylight/controller/cluster/datastore/RoleChangeNotifierTest.java

   1 /*
   2  * Copyright (c) 2014, 2015 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 static org.junit.Assert.assertEquals;
  12 import static org.junit.Assert.assertNotNull;
  13 import static org.junit.Assert.assertNull;
  14
  15 import akka.actor.ActorRef;
  16 import akka.actor.Props;
  17 import akka.testkit.JavaTestKit;
  18 import akka.testkit.TestActorRef;
  19 import org.junit.Test;
  20 import org.opendaylight.controller.cluster.notifications.LeaderStateChanged;
  21 import org.opendaylight.controller.cluster.notifications.RegisterRoleChangeListener;
  22 import org.opendaylight.controller.cluster.notifications.RegisterRoleChangeListenerReply;
  23 import org.opendaylight.controller.cluster.notifications.RoleChangeNotification;
  24 import org.opendaylight.controller.cluster.notifications.RoleChangeNotifier;
  25 import org.opendaylight.controller.cluster.notifications.RoleChanged;
  26 import org.opendaylight.controller.cluster.raft.RaftState;
  27 import org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor;
  28
  29 public class RoleChangeNotifierTest extends AbstractActorTest {
  30
  31     @Test
  32     public void testHandleRegisterRoleChangeListener() throws Exception {
  33         new JavaTestKit(getSystem()) {
  34             {
  35                 String memberId = "testHandleRegisterRoleChangeListener";
  36                 ActorRef listenerActor = getSystem().actorOf(Props.create(MessageCollectorActor.class));
  37
  38                 TestActorRef<RoleChangeNotifier> notifierTestActorRef = TestActorRef.create(getSystem(),
  39                         RoleChangeNotifier.getProps(memberId), memberId);
  40
  41                 notifierTestActorRef.tell(new RegisterRoleChangeListener(), listenerActor);
  42
  43                 RegisterRoleChangeListenerReply reply = MessageCollectorActor.getFirstMatching(listenerActor,
  44                         RegisterRoleChangeListenerReply.class);
  45                 assertNotNull(reply);
  46
  47                 RoleChangeNotification notification = MessageCollectorActor.getFirstMatching(listenerActor,
  48                         RoleChangeNotification.class);
  49                 assertNull(notification);
  50             }
  51         };
  52     }
  53
  54     @Test
  55     public void testHandleRaftRoleChanged() throws Exception {
  56         new JavaTestKit(getSystem()) {
  57             {
  58                 String memberId = "testHandleRegisterRoleChangeListenerWithNotificationSet";
  59                 ActorRef listenerActor = getSystem().actorOf(Props.create(MessageCollectorActor.class));
  60                 ActorRef shardActor = getTestActor();
  61
  62                 TestActorRef<RoleChangeNotifier> notifierTestActorRef = TestActorRef.create(getSystem(),
  63                         RoleChangeNotifier.getProps(memberId), memberId);
  64
  65                 notifierTestActorRef.tell(
  66                         new RoleChanged(memberId, RaftState.Candidate.name(), RaftState.Leader.name()), shardActor);
  67
  68                 // no notification should be sent as listener has not yet
  69                 // registered
  70                 assertNull(MessageCollectorActor.getFirstMatching(listenerActor, RoleChangeNotification.class));
  71
  72                 // listener registers after role has been changed, ensure we
  73                 // sent the latest role change after a reply
  74                 notifierTestActorRef.tell(new RegisterRoleChangeListener(), listenerActor);
  75
  76                 RegisterRoleChangeListenerReply reply = MessageCollectorActor.getFirstMatching(listenerActor,
  77                         RegisterRoleChangeListenerReply.class);
  78                 assertNotNull(reply);
  79
  80                 RoleChangeNotification notification = MessageCollectorActor.getFirstMatching(listenerActor,
  81                         RoleChangeNotification.class);
  82                 assertNotNull(notification);
  83                 assertEquals(RaftState.Candidate.name(), notification.getOldRole());
  84                 assertEquals(RaftState.Leader.name(), notification.getNewRole());
  85
  86             }
  87         };
  88
  89     }
  90
  91     @Test
  92     public void testHandleLeaderStateChanged() throws Exception {
  93         new JavaTestKit(getSystem()) {
  94             {
  95                 String actorId = "testHandleLeaderStateChanged";
  96                 TestActorRef<RoleChangeNotifier> notifierTestActorRef = TestActorRef.create(getSystem(),
  97                         RoleChangeNotifier.getProps(actorId), actorId);
  98
  99                 notifierTestActorRef.tell(new LeaderStateChanged("member1", "leader1", (short) 5), ActorRef.noSender());
 100
 101                 // listener registers after the sate has been changed, ensure we
 102                 // sent the latest state change after a reply
 103                 notifierTestActorRef.tell(new RegisterRoleChangeListener(), getRef());
 104
 105                 expectMsgClass(RegisterRoleChangeListenerReply.class);
 106
 107                 LeaderStateChanged leaderStateChanged = expectMsgClass(LeaderStateChanged.class);
 108                 assertEquals("getMemberId", "member1", leaderStateChanged.getMemberId());
 109                 assertEquals("getLeaderId", "leader1", leaderStateChanged.getLeaderId());
 110                 assertEquals("getLeaderPayloadVersion", 5, leaderStateChanged.getLeaderPayloadVersion());
 111
 112                 notifierTestActorRef.tell(new LeaderStateChanged("member1", "leader2", (short) 6), ActorRef.noSender());
 113
 114                 leaderStateChanged = expectMsgClass(LeaderStateChanged.class);
 115                 assertEquals("getMemberId", "member1", leaderStateChanged.getMemberId());
 116                 assertEquals("getLeaderId", "leader2", leaderStateChanged.getLeaderId());
 117                 assertEquals("getLeaderPayloadVersion", 6, leaderStateChanged.getLeaderPayloadVersion());
 118             }
 119         };
 120     }
 121 }