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.testkit.TestActorRef;
  17 import akka.testkit.javadsl.TestKit;
  18 import org.junit.Before;
  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     private TestKit testKit;
  31
  32     @Before
  33     public void setup() {
  34         testKit = new TestKit(getSystem());
  35     }
  36
  37     @Test
  38     public void testHandleRegisterRoleChangeListener() {
  39         String memberId = "testHandleRegisterRoleChangeListener";
  40         ActorRef listenerActor = getSystem().actorOf(MessageCollectorActor.props());
  41
  42         TestActorRef<RoleChangeNotifier> notifierTestActorRef = TestActorRef.create(getSystem(),
  43             RoleChangeNotifier.getProps(memberId), memberId);
  44
  45         notifierTestActorRef.tell(new RegisterRoleChangeListener(), listenerActor);
  46
  47         RegisterRoleChangeListenerReply reply = MessageCollectorActor.getFirstMatching(listenerActor,
  48             RegisterRoleChangeListenerReply.class);
  49         assertNotNull(reply);
  50
  51         RoleChangeNotification notification = MessageCollectorActor.getFirstMatching(listenerActor,
  52             RoleChangeNotification.class);
  53         assertNull(notification);
  54     }
  55
  56     @Test
  57     public void testHandleRaftRoleChanged() {
  58         String memberId = "testHandleRegisterRoleChangeListenerWithNotificationSet";
  59         ActorRef listenerActor = getSystem().actorOf(MessageCollectorActor.props());
  60         ActorRef shardActor = testKit.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     @Test
  88     public void testHandleLeaderStateChanged() {
  89         String actorId = "testHandleLeaderStateChanged";
  90         TestActorRef<RoleChangeNotifier> notifierTestActorRef = TestActorRef.create(getSystem(),
  91             RoleChangeNotifier.getProps(actorId), actorId);
  92
  93         notifierTestActorRef.tell(new LeaderStateChanged("member1", "leader1", (short) 5), ActorRef.noSender());
  94
  95         // listener registers after the sate has been changed, ensure we
  96         // sent the latest state change after a reply
  97         notifierTestActorRef.tell(new RegisterRoleChangeListener(), testKit.getRef());
  98
  99         testKit.expectMsgClass(RegisterRoleChangeListenerReply.class);
 100
 101         LeaderStateChanged leaderStateChanged = testKit.expectMsgClass(LeaderStateChanged.class);
 102         assertEquals("getMemberId", "member1", leaderStateChanged.getMemberId());
 103         assertEquals("getLeaderId", "leader1", leaderStateChanged.getLeaderId());
 104         assertEquals("getLeaderPayloadVersion", 5, leaderStateChanged.getLeaderPayloadVersion());
 105
 106         notifierTestActorRef.tell(new LeaderStateChanged("member1", "leader2", (short) 6), ActorRef.noSender());
 107
 108         leaderStateChanged = testKit.expectMsgClass(LeaderStateChanged.class);
 109         assertEquals("getMemberId", "member1", leaderStateChanged.getMemberId());
 110         assertEquals("getLeaderId", "leader2", leaderStateChanged.getLeaderId());
 111         assertEquals("getLeaderPayloadVersion", 6, leaderStateChanged.getLeaderPayloadVersion());
 112     }
 113 }