com.hazelcast.durableexecutor.impl.DistributedDurableExecutorService Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2018, 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.durableexecutor.impl;
import com.hazelcast.config.DurableExecutorConfig;
import com.hazelcast.core.DistributedObject;
import com.hazelcast.internal.cluster.Versions;
import com.hazelcast.spi.ManagedService;
import com.hazelcast.spi.MigrationAwareService;
import com.hazelcast.spi.NodeEngine;
import com.hazelcast.spi.Operation;
import com.hazelcast.spi.PartitionMigrationEvent;
import com.hazelcast.spi.PartitionReplicationEvent;
import com.hazelcast.spi.QuorumAwareService;
import com.hazelcast.spi.RemoteService;
import com.hazelcast.spi.impl.NodeEngineImpl;
import com.hazelcast.spi.partition.MigrationEndpoint;
import com.hazelcast.util.ConstructorFunction;
import com.hazelcast.util.ContextMutexFactory;
import java.util.Collections;
import java.util.Properties;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import static com.hazelcast.util.ConcurrencyUtil.getOrPutSynchronized;
public class DistributedDurableExecutorService implements ManagedService, RemoteService, MigrationAwareService,
QuorumAwareService {
public static final String SERVICE_NAME = "hz:impl:durableExecutorService";
private static final Object NULL_OBJECT = new Object();
private final NodeEngineImpl nodeEngine;
private final DurableExecutorPartitionContainer[] partitionContainers;
private final Set shutdownExecutors
= Collections.newSetFromMap(new ConcurrentHashMap());
private final ConcurrentMap quorumConfigCache = new ConcurrentHashMap();
private final ContextMutexFactory quorumConfigCacheMutexFactory = new ContextMutexFactory();
private final ConstructorFunction quorumConfigConstructor = new ConstructorFunction() {
@Override
public Object createNew(String name) {
DurableExecutorConfig executorConfig = nodeEngine.getConfig().findDurableExecutorConfig(name);
String quorumName = executorConfig.getQuorumName();
return quorumName == null ? NULL_OBJECT : quorumName;
}
};
public DistributedDurableExecutorService(NodeEngineImpl nodeEngine) {
this.nodeEngine = nodeEngine;
int partitionCount = nodeEngine.getPartitionService().getPartitionCount();
partitionContainers = new DurableExecutorPartitionContainer[partitionCount];
for (int partitionId = 0; partitionId < partitionCount; partitionId++) {
partitionContainers[partitionId] = new DurableExecutorPartitionContainer(nodeEngine, partitionId);
}
}
@Override
public void init(NodeEngine nodeEngine, Properties properties) {
}
public DurableExecutorPartitionContainer getPartitionContainer(int partitionId) {
return partitionContainers[partitionId];
}
public NodeEngine getNodeEngine() {
return nodeEngine;
}
@Override
public void reset() {
shutdownExecutors.clear();
for (int partitionId = 0; partitionId < partitionContainers.length; partitionId++) {
partitionContainers[partitionId] = new DurableExecutorPartitionContainer(nodeEngine, partitionId);
}
}
@Override
public void shutdown(boolean terminate) {
reset();
}
@Override
public DistributedObject createDistributedObject(String name) {
return new DurableExecutorServiceProxy(nodeEngine, this, name);
}
@Override
public void destroyDistributedObject(String name) {
shutdownExecutors.remove(name);
nodeEngine.getExecutionService().shutdownDurableExecutor(name);
quorumConfigCache.remove(name);
}
public void shutdownExecutor(String name) {
nodeEngine.getExecutionService().shutdownDurableExecutor(name);
shutdownExecutors.add(name);
}
public boolean isShutdown(String name) {
return shutdownExecutors.contains(name);
}
@Override
public Operation prepareReplicationOperation(PartitionReplicationEvent event) {
int partitionId = event.getPartitionId();
DurableExecutorPartitionContainer partitionContainer = partitionContainers[partitionId];
return partitionContainer.prepareReplicationOperation(event.getReplicaIndex());
}
@Override
public void beforeMigration(PartitionMigrationEvent event) {
}
@Override
public void commitMigration(PartitionMigrationEvent event) {
int partitionId = event.getPartitionId();
if (event.getMigrationEndpoint() == MigrationEndpoint.SOURCE) {
clearRingBuffersHavingLesserBackupCountThan(partitionId, event.getNewReplicaIndex());
} else if (event.getNewReplicaIndex() == 0) {
DurableExecutorPartitionContainer partitionContainer = partitionContainers[partitionId];
partitionContainer.executeAll();
}
}
@Override
public void rollbackMigration(PartitionMigrationEvent event) {
if (event.getMigrationEndpoint() == MigrationEndpoint.DESTINATION) {
clearRingBuffersHavingLesserBackupCountThan(event.getPartitionId(), event.getCurrentReplicaIndex());
}
}
private void clearRingBuffersHavingLesserBackupCountThan(int partitionId, int thresholdReplicaIndex) {
DurableExecutorPartitionContainer partitionContainer = partitionContainers[partitionId];
partitionContainer.clearRingBuffersHavingLesserBackupCountThan(thresholdReplicaIndex);
}
@Override
public String getQuorumName(final String name) {
// RU_COMPAT_3_9
if (nodeEngine.getClusterService().getClusterVersion().isLessThan(Versions.V3_10)) {
return null;
}
Object quorumName = getOrPutSynchronized(quorumConfigCache, name, quorumConfigCacheMutexFactory,
quorumConfigConstructor);
return quorumName == NULL_OBJECT ? null : (String) quorumName;
}
}