/*
* Copyright (c) 2008-2013, 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.transaction.impl;
import com.hazelcast.collection.list.ListService;
import com.hazelcast.collection.set.SetService;
import com.hazelcast.core.HazelcastInstanceNotActiveException;
import com.hazelcast.core.TransactionalList;
import com.hazelcast.core.TransactionalMap;
import com.hazelcast.core.TransactionalMultiMap;
import com.hazelcast.core.TransactionalQueue;
import com.hazelcast.core.TransactionalSet;
import com.hazelcast.map.MapService;
import com.hazelcast.multimap.MultiMapService;
import com.hazelcast.queue.QueueService;
import com.hazelcast.spi.TransactionalService;
import com.hazelcast.spi.impl.NodeEngineImpl;
import com.hazelcast.transaction.TransactionContext;
import com.hazelcast.transaction.TransactionException;
import com.hazelcast.transaction.TransactionNotActiveException;
import com.hazelcast.transaction.TransactionOptions;
import com.hazelcast.transaction.TransactionalObject;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;
final class TransactionContextImpl implements TransactionContext {
private final NodeEngineImpl nodeEngine;
private final TransactionImpl transaction;
private final TransactionManagerServiceImpl transactionManager;
private final Map<TransactionalObjectKey, TransactionalObject> txnObjectMap
= new HashMap<TransactionalObjectKey, TransactionalObject>(2);
private XAResourceImpl xaResource;
TransactionContextImpl(TransactionManagerServiceImpl transactionManagerService, NodeEngineImpl nodeEngine,
TransactionOptions options, String ownerUuid) {
this.transactionManager = transactionManagerService;
this.nodeEngine = nodeEngine;
this.transaction = new TransactionImpl(transactionManagerService, nodeEngine, options, ownerUuid);
}
@Override
public XAResourceImpl getXaResource() {
if (xaResource == null) {
xaResource = new XAResourceImpl(transactionManager, this, nodeEngine);
}
return xaResource;
}
@Override
public boolean isXAManaged() {
return transaction.getXid() != null;
}
@Override
public String getTxnId() {
return transaction.getTxnId();
}
@Override
public void beginTransaction() {
transaction.begin();
}
@Override
public void commitTransaction() throws TransactionException {
if (transaction.getTransactionType().equals(TransactionOptions.TransactionType.TWO_PHASE)) {
transaction.prepare();
}
transaction.commit();
}
@Override
public void rollbackTransaction() {
transaction.rollback();
}
@SuppressWarnings("unchecked")
@Override
public <K, V> TransactionalMap<K, V> getMap(String name) {
return (TransactionalMap<K, V>) getTransactionalObject(MapService.SERVICE_NAME, name);
}
@SuppressWarnings("unchecked")
@Override
public <E> TransactionalQueue<E> getQueue(String name) {
return (TransactionalQueue<E>) getTransactionalObject(QueueService.SERVICE_NAME, name);
}
@SuppressWarnings("unchecked")
@Override
public <K, V> TransactionalMultiMap<K, V> getMultiMap(String name) {
return (TransactionalMultiMap<K, V>) getTransactionalObject(MultiMapService.SERVICE_NAME, name);
}
@SuppressWarnings("unchecked")
@Override
public <E> TransactionalList<E> getList(String name) {
return (TransactionalList<E>) getTransactionalObject(ListService.SERVICE_NAME, name);
}
@SuppressWarnings("unchecked")
@Override
public <E> TransactionalSet<E> getSet(String name) {
return (TransactionalSet<E>) getTransactionalObject(SetService.SERVICE_NAME, name);
}
@SuppressWarnings("unchecked")
@Override
public TransactionalObject getTransactionalObject(String serviceName, String name) {
if (transaction.getState() != Transaction.State.ACTIVE) {
throw new TransactionNotActiveException("No transaction is found while accessing "
+ "transactional object -> " + serviceName + "[" + name + "]!");
}
TransactionalObjectKey key = new TransactionalObjectKey(serviceName, name);
TransactionalObject obj = txnObjectMap.get(key);
if (obj != null) {
return obj;
}
final Object service = nodeEngine.getService(serviceName);
if (service instanceof TransactionalService) {
nodeEngine.getProxyService().initializeDistributedObject(serviceName, name);
obj = ((TransactionalService) service).createTransactionalObject(name, transaction);
txnObjectMap.put(key, obj);
} else {
if (service == null) {
if (!nodeEngine.isActive()) {
throw new HazelcastInstanceNotActiveException();
}
throw new IllegalArgumentException("Unknown Service[" + serviceName + "]!");
}
throw new IllegalArgumentException("Service[" + serviceName + "] is not transactional!");
}
return obj;
}
Transaction getTransaction() {
return transaction;
}
public boolean setTransactionTimeout(int seconds) {
return transaction.setTimeoutMillis(TimeUnit.SECONDS.toMillis(seconds));
}
private static class TransactionalObjectKey {
private final String serviceName;
private final String name;
TransactionalObjectKey(String serviceName, String name) {
this.serviceName = serviceName;
this.name = name;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (!(o instanceof TransactionalObjectKey)) {
return false;
}
TransactionalObjectKey that = (TransactionalObjectKey) o;
if (!name.equals(that.name)) {
return false;
}
if (!serviceName.equals(that.serviceName)) {
return false;
}
return true;
}
@Override
public int hashCode() {
int result = serviceName.hashCode();
result = 31 * result + name.hashCode();
return result;
}
}
}