/*
* 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.instance;
import com.hazelcast.cardinality.CardinalityEstimator;
import com.hazelcast.config.Config;
import com.hazelcast.core.ClientService;
import com.hazelcast.core.Cluster;
import com.hazelcast.core.DistributedObject;
import com.hazelcast.core.DistributedObjectListener;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.HazelcastInstanceNotActiveException;
import com.hazelcast.core.IAtomicLong;
import com.hazelcast.core.IAtomicReference;
import com.hazelcast.core.ICacheManager;
import com.hazelcast.core.ICountDownLatch;
import com.hazelcast.core.IExecutorService;
import com.hazelcast.core.IList;
import com.hazelcast.core.ILock;
import com.hazelcast.core.IMap;
import com.hazelcast.core.IQueue;
import com.hazelcast.core.ISemaphore;
import com.hazelcast.core.ISet;
import com.hazelcast.core.ITopic;
import com.hazelcast.core.IdGenerator;
import com.hazelcast.core.LifecycleService;
import com.hazelcast.core.Member;
import com.hazelcast.core.MultiMap;
import com.hazelcast.core.PartitionService;
import com.hazelcast.core.ReplicatedMap;
import com.hazelcast.durableexecutor.DurableExecutorService;
import com.hazelcast.internal.serialization.InternalSerializationService;
import com.hazelcast.logging.LoggingService;
import com.hazelcast.mapreduce.JobTracker;
import com.hazelcast.quorum.QuorumService;
import com.hazelcast.ringbuffer.Ringbuffer;
import com.hazelcast.scheduledexecutor.IScheduledExecutorService;
import com.hazelcast.spi.annotation.PrivateApi;
import com.hazelcast.spi.impl.SerializationServiceSupport;
import com.hazelcast.transaction.HazelcastXAResource;
import com.hazelcast.transaction.TransactionContext;
import com.hazelcast.transaction.TransactionException;
import com.hazelcast.transaction.TransactionOptions;
import com.hazelcast.transaction.TransactionalTask;
import java.util.Collection;
import java.util.concurrent.ConcurrentMap;
/**
* A proxy around the actual HazelcastInstanceImpl. This class serves 2 purposes:
* <ol>
* <li>
* if the HazelcastInstance is shutdown, the reference to the original HazelcastInstanceImpl is null'ed and
* this HazelcastInstanceImpl and all its dependencies can be gc'ed. If the HazelcastInstanceImpl would
* be exposed directly, it could still retain unusable objects due to its not null fields.</li>
* <li>
* it provides a barrier for accessing the HazelcastInstanceImpl internals. Otherwise a simple cast to HazelcastInstanceImpl
* would be sufficient but now a bit of reflection is needed to get there.
* </li>
* </ol>
*/
@SuppressWarnings({"checkstyle:methodcount", "checkstyle:classfanoutcomplexity"})
@PrivateApi
public final class HazelcastInstanceProxy implements HazelcastInstance, SerializationServiceSupport {
protected volatile HazelcastInstanceImpl original;
private final String name;
protected HazelcastInstanceProxy(HazelcastInstanceImpl original) {
this.original = original;
name = original.getName();
}
@Override
public String getName() {
return name;
}
@Override
public <K, V> IMap<K, V> getMap(String name) {
return getOriginal().getMap(name);
}
@Override
public <E> IQueue<E> getQueue(String name) {
return getOriginal().getQueue(name);
}
@Override
public <E> ITopic<E> getTopic(String name) {
return getOriginal().getTopic(name);
}
@Override
public <E> ITopic<E> getReliableTopic(String name) {
return getOriginal().getReliableTopic(name);
}
@Override
public <E> ISet<E> getSet(String name) {
return getOriginal().getSet(name);
}
@Override
public <E> IList<E> getList(String name) {
return getOriginal().getList(name);
}
@Override
public <K, V> MultiMap<K, V> getMultiMap(String name) {
return getOriginal().getMultiMap(name);
}
@Override
public JobTracker getJobTracker(String name) {
return getOriginal().getJobTracker(name);
}
@Override
public <E> Ringbuffer<E> getRingbuffer(String name) {
return getOriginal().getRingbuffer(name);
}
@Override
public ILock getLock(String key) {
return getOriginal().getLock(key);
}
@Override
public IExecutorService getExecutorService(String name) {
return getOriginal().getExecutorService(name);
}
@Override
public DurableExecutorService getDurableExecutorService(String name) {
return getOriginal().getDurableExecutorService(name);
}
@Override
public <T> T executeTransaction(TransactionalTask<T> task) throws TransactionException {
return getOriginal().executeTransaction(task);
}
@Override
public <T> T executeTransaction(TransactionOptions options, TransactionalTask<T> task) throws TransactionException {
return getOriginal().executeTransaction(options, task);
}
@Override
public TransactionContext newTransactionContext() {
return getOriginal().newTransactionContext();
}
@Override
public TransactionContext newTransactionContext(TransactionOptions options) {
return getOriginal().newTransactionContext(options);
}
@Override
public IdGenerator getIdGenerator(String name) {
return getOriginal().getIdGenerator(name);
}
@Override
public IAtomicLong getAtomicLong(String name) {
return getOriginal().getAtomicLong(name);
}
@Override
public <K, V> ReplicatedMap<K, V> getReplicatedMap(String name) {
return getOriginal().getReplicatedMap(name);
}
@Override
public <E> IAtomicReference<E> getAtomicReference(String name) {
return getOriginal().getAtomicReference(name);
}
@Override
public ICountDownLatch getCountDownLatch(String name) {
return getOriginal().getCountDownLatch(name);
}
@Override
public ISemaphore getSemaphore(String name) {
return getOriginal().getSemaphore(name);
}
@Override
public ICacheManager getCacheManager() {
return getOriginal().getCacheManager();
}
@Override
public Cluster getCluster() {
return getOriginal().getCluster();
}
@Override
public Member getLocalEndpoint() {
return getOriginal().getLocalEndpoint();
}
@Override
public Collection<DistributedObject> getDistributedObjects() {
return getOriginal().getDistributedObjects();
}
@Override
public Config getConfig() {
return getOriginal().getConfig();
}
@Override
public PartitionService getPartitionService() {
return getOriginal().getPartitionService();
}
@Override
public QuorumService getQuorumService() {
return getOriginal().getQuorumService();
}
@Override
public ClientService getClientService() {
return getOriginal().getClientService();
}
@Override
public LoggingService getLoggingService() {
return getOriginal().getLoggingService();
}
@Override
public LifecycleService getLifecycleService() {
final HazelcastInstanceImpl hz = original;
return hz != null ? hz.getLifecycleService() : new TerminatedLifecycleService();
}
@Override
public <T extends DistributedObject> T getDistributedObject(String serviceName, String name) {
return getOriginal().getDistributedObject(serviceName, name);
}
@Override
public String addDistributedObjectListener(DistributedObjectListener distributedObjectListener) {
return getOriginal().addDistributedObjectListener(distributedObjectListener);
}
@Override
public boolean removeDistributedObjectListener(String registrationId) {
return getOriginal().removeDistributedObjectListener(registrationId);
}
@Override
public ConcurrentMap<String, Object> getUserContext() {
return getOriginal().getUserContext();
}
@Override
public HazelcastXAResource getXAResource() {
return getOriginal().getXAResource();
}
@Override
public CardinalityEstimator getCardinalityEstimator(String name) {
return getOriginal().getCardinalityEstimator(name);
}
@Override
public IScheduledExecutorService getScheduledExecutorService(String name) {
return getOriginal().getScheduledExecutorService(name);
}
@Override
public void shutdown() {
getLifecycleService().shutdown();
}
@Override
public InternalSerializationService getSerializationService() {
return getOriginal().getSerializationService();
}
public HazelcastInstanceImpl getOriginal() {
final HazelcastInstanceImpl hazelcastInstance = original;
if (hazelcastInstance == null) {
throw new HazelcastInstanceNotActiveException();
}
return hazelcastInstance;
}
@Override
public String toString() {
final HazelcastInstanceImpl hazelcastInstance = original;
if (hazelcastInstance != null) {
return hazelcastInstance.toString();
}
return "HazelcastInstance {NOT ACTIVE}";
}
@Override
public int hashCode() {
return name != null ? name.hashCode() : 0;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || !(o instanceof HazelcastInstance)) {
return false;
}
HazelcastInstance that = (HazelcastInstance) o;
return !(name != null ? !name.equals(that.getName()) : that.getName() != null);
}
}