/*
* 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.queue.impl.tx;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.queue.impl.QueueService;
import com.hazelcast.spi.InternalCompletableFuture;
import com.hazelcast.spi.NodeEngine;
import com.hazelcast.spi.Operation;
import com.hazelcast.spi.OperationService;
import com.hazelcast.transaction.impl.KeyAwareTransactionLog;
import com.hazelcast.util.ExceptionUtil;
import java.io.IOException;
import java.util.concurrent.Future;
/**
* This class contains Transaction log for the Queue.
*/
public class QueueTransactionLog implements KeyAwareTransactionLog {
private long itemId;
private String name;
private Operation op;
private int partitionId;
private String transactionId;
public QueueTransactionLog() {
}
public QueueTransactionLog(String transactionId, long itemId, String name, int partitionId, Operation op) {
this.transactionId = transactionId;
this.itemId = itemId;
this.name = name;
this.partitionId = partitionId;
this.op = op;
}
@Override
public Future prepare(NodeEngine nodeEngine) {
boolean pollOperation = op instanceof TxnPollOperation;
TxnPrepareOperation operation = new TxnPrepareOperation(name, itemId, pollOperation, transactionId);
try {
return invoke(nodeEngine, operation);
} catch (Throwable t) {
throw ExceptionUtil.rethrow(t);
}
}
private InternalCompletableFuture invoke(NodeEngine nodeEngine, Operation operation) {
OperationService operationService = nodeEngine.getOperationService();
return operationService.invokeOnPartition(QueueService.SERVICE_NAME, operation, partitionId);
}
@Override
public Future commit(NodeEngine nodeEngine) {
try {
OperationService operationService = nodeEngine.getOperationService();
return operationService.invokeOnPartition(QueueService.SERVICE_NAME, op, partitionId);
} catch (Throwable t) {
throw ExceptionUtil.rethrow(t);
}
}
@Override
public Future rollback(NodeEngine nodeEngine) {
boolean pollOperation = op instanceof TxnPollOperation;
TxnRollbackOperation operation = new TxnRollbackOperation(name, itemId, pollOperation);
try {
return invoke(nodeEngine, operation);
} catch (Throwable t) {
throw ExceptionUtil.rethrow(t);
}
}
@Override
public void writeData(ObjectDataOutput out) throws IOException {
out.writeUTF(transactionId);
out.writeLong(itemId);
out.writeUTF(name);
out.writeInt(partitionId);
out.writeObject(op);
}
@Override
public void readData(ObjectDataInput in) throws IOException {
transactionId = in.readUTF();
itemId = in.readLong();
name = in.readUTF();
partitionId = in.readInt();
op = in.readObject();
}
@Override
public Object getKey() {
return new TransactionLogKey(itemId, name);
}
}