/*
* Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.internal.partition.impl;
import com.hazelcast.config.Config;
import com.hazelcast.config.ListenerConfig;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.internal.partition.MigrationInfo;
import com.hazelcast.internal.partition.impl.InternalMigrationListener.MigrationParticipant;
import com.hazelcast.spi.properties.GroupProperty;
import com.hazelcast.test.HazelcastSerialClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
import com.hazelcast.test.TestHazelcastInstanceFactory;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import java.util.ArrayList;
import java.util.List;
import static org.junit.Assert.assertEquals;
@RunWith(HazelcastSerialClassRunner.class)
@Category(QuickTest.class)
public class InternalMigrationListenerTest extends HazelcastTestSupport {
private static final int PARTITION_COUNT = 2;
@Test
public void shouldInvokeInternalMigrationListenerOnSuccessfulMigration() {
final Config config1 = new Config();
config1.setProperty(GroupProperty.PARTITION_COUNT.getName(), String.valueOf(PARTITION_COUNT));
final TestHazelcastInstanceFactory factory = createHazelcastInstanceFactory(2);
final HazelcastInstance hz1 = factory.newHazelcastInstance(config1);
warmUpPartitions(hz1);
final InternalMigrationListenerImpl listener = new InternalMigrationListenerImpl();
final Config config2 = new Config();
config2.setProperty(GroupProperty.PARTITION_COUNT.getName(), String.valueOf(PARTITION_COUNT));
config2.addListenerConfig(new ListenerConfig(listener));
final HazelcastInstance hz2 = factory.newHazelcastInstance(config2);
waitAllForSafeState(hz1, hz2);
final List<Integer> hz2PartitionIds = getNodeEngineImpl(hz2).getPartitionService().getMemberPartitions(getAddress(hz2));
assertEquals(1, hz2PartitionIds.size());
final List<MigrationProgressNotification> notifications = listener.getNotifications();
int partition0Events = 0, partition1Events = 0;
assertEquals(6, notifications.size());
for (MigrationProgressNotification n : notifications) {
if (n.migrationInfo.getPartitionId() == 0) {
partition0Events++;
} else {
partition1Events++;
}
}
assertEquals(3, partition0Events);
assertEquals(3, partition1Events);
}
enum MigrationProgressEvent {
START,
COMPLETE,
COMMIT,
ROLLBACK
}
static class MigrationProgressNotification {
final MigrationProgressEvent event;
final MigrationParticipant participant;
final MigrationInfo migrationInfo;
final boolean success;
public MigrationProgressNotification(MigrationProgressEvent event, MigrationParticipant participant,
MigrationInfo migrationInfo) {
this(event, participant, migrationInfo, true);
}
public MigrationProgressNotification(MigrationProgressEvent event, MigrationParticipant participant,
MigrationInfo migrationInfo, boolean success) {
this.event = event;
this.participant = participant;
this.migrationInfo = migrationInfo;
this.success = success;
}
@Override
public String toString() {
return "MigrationProgressNotification{" +
"event=" + event +
", participant=" + participant +
", migrationInfo=" + migrationInfo +
", success=" + success +
'}';
}
}
static class InternalMigrationListenerImpl
extends InternalMigrationListener {
private final List<MigrationProgressNotification> notifications = new ArrayList<MigrationProgressNotification>();
@Override
public synchronized void onMigrationStart(MigrationParticipant participant, MigrationInfo migrationInfo) {
notifications.add(new MigrationProgressNotification(MigrationProgressEvent.START, participant, migrationInfo));
}
@Override
public synchronized void onMigrationComplete(MigrationParticipant participant, MigrationInfo migrationInfo,
boolean success) {
notifications
.add(new MigrationProgressNotification(MigrationProgressEvent.COMPLETE, participant, migrationInfo, success));
}
@Override
public synchronized void onMigrationCommit(MigrationParticipant participant, MigrationInfo migrationInfo) {
notifications.add(new MigrationProgressNotification(MigrationProgressEvent.COMMIT, participant, migrationInfo));
}
@Override
public synchronized void onMigrationRollback(MigrationParticipant participant, MigrationInfo migrationInfo) {
notifications.add(new MigrationProgressNotification(MigrationProgressEvent.ROLLBACK, participant, migrationInfo));
}
public synchronized List<MigrationProgressNotification> getNotifications() {
return new ArrayList<MigrationProgressNotification>(notifications);
}
}
}