/*
* 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.tx;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.queue.QueueContainer;
import com.hazelcast.queue.QueueDataSerializerHook;
import com.hazelcast.queue.QueueOperation;
import com.hazelcast.spi.WaitNotifyKey;
import com.hazelcast.spi.WaitSupport;
import java.io.IOException;
/**
* Reserve poll operation for the transactional queue.
*/
public class TxnReservePollOperation extends QueueOperation implements WaitSupport {
private long reservedOfferId;
private String transactionId;
public TxnReservePollOperation() {
}
public TxnReservePollOperation(String name, long timeoutMillis, long reservedOfferId, String transactionId) {
super(name, timeoutMillis);
this.reservedOfferId = reservedOfferId;
this.transactionId = transactionId;
}
@Override
public void run() throws Exception {
QueueContainer container = getOrCreateContainer();
response = container.txnPollReserve(reservedOfferId, transactionId);
}
@Override
public WaitNotifyKey getWaitKey() {
QueueContainer container = getOrCreateContainer();
return container.getPollWaitNotifyKey();
}
@Override
public boolean shouldWait() {
final QueueContainer container = getOrCreateContainer();
return getWaitTimeout() != 0 && (container.size() + container.txMapSize()) == 0;
}
@Override
public void onWaitExpire() {
getResponseHandler().sendResponse(null);
}
@Override
public int getId() {
return QueueDataSerializerHook.TXN_RESERVE_POLL;
}
@Override
protected void writeInternal(ObjectDataOutput out) throws IOException {
super.writeInternal(out);
out.writeLong(reservedOfferId);
out.writeUTF(transactionId);
}
@Override
protected void readInternal(ObjectDataInput in) throws IOException {
super.readInternal(in);
reservedOfferId = in.readLong();
transactionId = in.readUTF();
}
}