/*
* 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.spi.impl.operationservice.impl;
import com.hazelcast.config.Config;
import com.hazelcast.config.ServiceConfig;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.instance.Node;
import com.hazelcast.nio.Address;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.spi.BackupAwareOperation;
import com.hazelcast.spi.BackupOperation;
import com.hazelcast.spi.InternalCompletableFuture;
import com.hazelcast.spi.NodeEngine;
import com.hazelcast.spi.Operation;
import com.hazelcast.spi.impl.NodeEngineImpl;
import com.hazelcast.spi.impl.operationservice.impl.operations.Backup;
import com.hazelcast.test.AssertTask;
import com.hazelcast.test.HazelcastSerialClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
import com.hazelcast.test.TestHazelcastInstanceFactory;
import com.hazelcast.test.annotation.ParallelTest;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import java.io.IOException;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicLong;
import static com.hazelcast.test.TestPartitionUtils.getDefaultReplicaVersions;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
@RunWith(HazelcastSerialClassRunner.class)
@Category({QuickTest.class, ParallelTest.class})
public class OperationOutOfOrderBackupTest extends HazelcastTestSupport {
private final ValueHolderService service = new ValueHolderService();
private int partitionId;
private NodeEngineImpl nodeEngine1;
private NodeEngineImpl nodeEngine2;
@Before
public void setup() {
Config config = new Config();
config.getServicesConfig().addServiceConfig(new ServiceConfig()
.setImplementation(service).setName(ValueHolderService.NAME).setEnabled(true));
TestHazelcastInstanceFactory factory = createHazelcastInstanceFactory();
HazelcastInstance hz1 = factory.newHazelcastInstance(config);
HazelcastInstance hz2 = factory.newHazelcastInstance(config);
warmUpPartitions(hz2, hz1);
partitionId = getPartitionId(hz1);
nodeEngine1 = getNodeEngineImpl(hz1);
nodeEngine2 = getNodeEngineImpl(hz2);
}
@Test
public void test() throws InterruptedException {
// set 1st value
int oldValue = 111;
setValue(nodeEngine1, partitionId, oldValue);
long[] initialReplicaVersions = getDefaultReplicaVersions(nodeEngine1.getNode(), partitionId);
assertBackupReplicaVersions(nodeEngine2.getNode(), partitionId, initialReplicaVersions);
// set 2nd value
int newValue = 222;
setValue(nodeEngine1, partitionId, newValue);
long[] lastReplicaVersions = getDefaultReplicaVersions(nodeEngine1.getNode(), partitionId);
assertBackupReplicaVersions(nodeEngine2.getNode(), partitionId, lastReplicaVersions);
// run a stale backup
runBackup(nodeEngine2, oldValue, initialReplicaVersions, nodeEngine1.getThisAddress());
long[] backupReplicaVersions = getDefaultReplicaVersions(nodeEngine2.getNode(), partitionId);
assertArrayEquals(lastReplicaVersions, backupReplicaVersions);
assertEquals(newValue, service.value.get());
}
private void runBackup(NodeEngine nodeEngine, int value, long[] replicaVersions, Address sender)
throws InterruptedException {
Backup
backup = new Backup(new SampleBackupOperation(value), sender, replicaVersions, false);
backup.setPartitionId(partitionId).setReplicaIndex(1).setNodeEngine(nodeEngine);
nodeEngine.getOperationService().execute(backup);
LatchOperation latchOp = new LatchOperation(1);
nodeEngine.getOperationService().execute(latchOp.setPartitionId(partitionId));
assertTrue(latchOp.latch.await(1, TimeUnit.MINUTES));
}
private void assertBackupReplicaVersions(final Node node, final int partitionId,
final long[] expectedReplicaVersions) {
assertTrueEventually(new AssertTask() {
@Override
public void run() throws Exception {
long[] backupReplicaVersions = getDefaultReplicaVersions(node, partitionId);
assertArrayEquals(expectedReplicaVersions, backupReplicaVersions);
}
});
}
private void setValue(NodeEngine nodeEngine, int partitionId, int value) {
InternalCompletableFuture<Object> future = nodeEngine.getOperationService()
.invokeOnPartition(new SampleBackupAwareOperation(value).setPartitionId(partitionId));
future.join();
}
private static class ValueHolderService {
static final String NAME = "value-holder-service";
final AtomicLong value = new AtomicLong();
}
private static class SampleBackupAwareOperation extends Operation implements BackupAwareOperation {
long value;
public SampleBackupAwareOperation() {
}
public SampleBackupAwareOperation(long value) {
this.value = value;
}
@Override
public void run() throws Exception {
NodeEngineImpl nodeEngine = (NodeEngineImpl) getNodeEngine();
ValueHolderService service = nodeEngine.getService(ValueHolderService.NAME);
service.value.set(value);
}
@Override
public boolean shouldBackup() {
return true;
}
@Override
public int getSyncBackupCount() {
return 1;
}
@Override
public int getAsyncBackupCount() {
return 0;
}
@Override
public Operation getBackupOperation() {
return new SampleBackupOperation(value);
}
@Override
protected void writeInternal(ObjectDataOutput out) throws IOException {
super.writeInternal(out);
out.writeLong(value);
}
@Override
protected void readInternal(ObjectDataInput in) throws IOException {
super.readInternal(in);
value = in.readLong();
}
}
private static class SampleBackupOperation extends Operation implements BackupOperation {
final CountDownLatch latch = new CountDownLatch(1);
long value;
public SampleBackupOperation() {
}
public SampleBackupOperation(long value) {
this.value = value;
}
@Override
public void run() throws Exception {
try {
NodeEngineImpl nodeEngine = (NodeEngineImpl) getNodeEngine();
ValueHolderService service = nodeEngine.getService(ValueHolderService.NAME);
service.value.set(value);
} finally {
latch.countDown();
}
}
@Override
protected void writeInternal(ObjectDataOutput out) throws IOException {
super.writeInternal(out);
out.writeLong(value);
}
@Override
protected void readInternal(ObjectDataInput in) throws IOException {
super.readInternal(in);
value = in.readLong();
}
}
private static class LatchOperation extends Operation {
final CountDownLatch latch;
private LatchOperation(int count) {
latch = new CountDownLatch(count);
}
@Override
public void run() throws Exception {
latch.countDown();
}
@Override
public boolean returnsResponse() {
return false;
}
@Override
public boolean validatesTarget() {
return false;
}
}
}