/*
* 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.multimap.impl.txn;
import com.hazelcast.concurrent.lock.LockWaitNotifyKey;
import com.hazelcast.multimap.impl.MultiMapContainer;
import com.hazelcast.multimap.impl.MultiMapDataSerializerHook;
import com.hazelcast.multimap.impl.MultiMapRecord;
import com.hazelcast.multimap.impl.MultiMapService;
import com.hazelcast.multimap.impl.MultiMapWrapper;
import com.hazelcast.multimap.impl.operations.MultiMapKeyBasedOperation;
import com.hazelcast.multimap.impl.operations.MultiMapResponse;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.spi.DefaultObjectNamespace;
import com.hazelcast.spi.WaitNotifyKey;
import com.hazelcast.spi.WaitSupport;
import com.hazelcast.transaction.TransactionException;
import java.io.IOException;
import java.util.Collection;
public class TxnLockAndGetOperation extends MultiMapKeyBasedOperation implements WaitSupport {
long ttl;
public TxnLockAndGetOperation() {
}
public TxnLockAndGetOperation(String name, Data dataKey, long timeout, long ttl, long threadId) {
super(name, dataKey);
this.ttl = ttl;
this.threadId = threadId;
setWaitTimeout(timeout);
}
public void run() throws Exception {
MultiMapContainer container = getOrCreateContainer();
if (!container.txnLock(dataKey, getCallerUuid(), threadId, ttl)) {
throw new TransactionException("Transaction couldn't obtain lock!");
}
MultiMapWrapper wrapper = getCollectionWrapper();
final boolean isLocal = getResponseHandler().isLocal();
Collection<MultiMapRecord> collection = wrapper == null ? null : wrapper.getCollection(isLocal);
final MultiMapResponse multiMapResponse = new MultiMapResponse(collection, getValueCollectionType(container));
multiMapResponse.setNextRecordId(container.nextId());
response = multiMapResponse;
}
public WaitNotifyKey getWaitKey() {
return new LockWaitNotifyKey(new DefaultObjectNamespace(MultiMapService.SERVICE_NAME, name), dataKey);
}
public boolean shouldWait() {
return !getOrCreateContainer().canAcquireLock(dataKey, getCallerUuid(), threadId);
}
public void onWaitExpire() {
getResponseHandler().sendResponse(null);
}
protected void writeInternal(ObjectDataOutput out) throws IOException {
super.writeInternal(out);
out.writeLong(ttl);
}
protected void readInternal(ObjectDataInput in) throws IOException {
super.readInternal(in);
ttl = in.readLong();
}
public int getId() {
return MultiMapDataSerializerHook.TXN_LOCK_AND_GET;
}
}