opendaylight/md-sal/sal-akka-raft/src/test/java/org/opendaylight/controller/cluster/raft/behaviors/AbstractLeaderTest.java

   1 /*
   2  * Copyright (c) 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.raft.behaviors;
  10
  11 import static org.junit.Assert.assertTrue;
  12
  13 import akka.actor.ActorRef;
  14 import akka.testkit.TestActorRef;
  15 import com.google.common.util.concurrent.Uninterruptibles;
  16 import java.util.HashMap;
  17 import java.util.List;
  18 import java.util.Map;
  19 import java.util.concurrent.TimeUnit;
  20 import org.junit.Test;
  21 import org.opendaylight.controller.cluster.raft.DefaultConfigParamsImpl;
  22 import org.opendaylight.controller.cluster.raft.MockRaftActorContext;
  23 import org.opendaylight.controller.cluster.raft.base.messages.SendHeartBeat;
  24 import org.opendaylight.controller.cluster.raft.utils.ForwardMessageToBehaviorActor;
  25 import org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor;
  26 import scala.concurrent.duration.FiniteDuration;
  27
  28 public abstract class AbstractLeaderTest<T extends AbstractLeader> extends AbstractRaftActorBehaviorTest<T> {
  29
  30     /**
  31      * When we removed scheduling of heartbeat in the AbstractLeader constructor we ended up with a situation where
  32      * if no follower responded to an initial AppendEntries heartbeats would not be sent to it. This test verifies
  33      * that regardless of whether followers respond or not we schedule heartbeats.
  34      */
  35     @Test
  36     public void testLeaderSchedulesHeartbeatsEvenWhenNoFollowersRespondToInitialAppendEntries() throws Exception {
  37         logStart("testLeaderSchedulesHeartbeatsEvenWhenNoFollowersRespondToInitialAppendEntries");
  38
  39         String leaderActorId = actorFactory.generateActorId("leader");
  40         String follower1ActorId = actorFactory.generateActorId("follower");
  41         String follower2ActorId = actorFactory.generateActorId("follower");
  42
  43         TestActorRef<ForwardMessageToBehaviorActor> leaderActor =
  44                 actorFactory.createTestActor(ForwardMessageToBehaviorActor.props(), leaderActorId);
  45         final ActorRef follower1Actor = actorFactory.createActor(MessageCollectorActor.props(), follower1ActorId);
  46         final ActorRef follower2Actor = actorFactory.createActor(MessageCollectorActor.props(), follower2ActorId);
  47
  48         MockRaftActorContext leaderActorContext =
  49                 new MockRaftActorContext(leaderActorId, getSystem(), leaderActor);
  50
  51         DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl();
  52         configParams.setHeartBeatInterval(new FiniteDuration(200, TimeUnit.MILLISECONDS));
  53         configParams.setIsolatedLeaderCheckInterval(new FiniteDuration(10, TimeUnit.SECONDS));
  54
  55         leaderActorContext.setConfigParams(configParams);
  56
  57         leaderActorContext.setReplicatedLog(
  58                 new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(1,5,1).build());
  59
  60         Map<String, String> peerAddresses = new HashMap<>();
  61         peerAddresses.put(follower1ActorId,
  62                 follower1Actor.path().toString());
  63         peerAddresses.put(follower2ActorId,
  64                 follower2Actor.path().toString());
  65
  66
  67         leaderActorContext.setPeerAddresses(peerAddresses);
  68
  69         RaftActorBehavior leader = createBehavior(leaderActorContext);
  70
  71         leaderActor.underlyingActor().setBehavior(leader);
  72
  73         Uninterruptibles.sleepUninterruptibly(1, TimeUnit.SECONDS);
  74
  75         List<SendHeartBeat> allMessages = MessageCollectorActor.getAllMatching(leaderActor, SendHeartBeat.class);
  76
  77         // Need more than 1 heartbeat to be delivered because we waited for 1 second with heartbeat interval 200ms
  78         assertTrue(String.format("%s messages is less than expected", allMessages.size()),
  79                 allMessages.size() > 1);
  80     }
  81 }