/*
* 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.concurrent.semaphore.operations;
import com.hazelcast.concurrent.semaphore.Permit;
import com.hazelcast.concurrent.semaphore.SemaphoreDataSerializerHook;
import com.hazelcast.concurrent.semaphore.SemaphoreWaitNotifyKey;
import com.hazelcast.nio.serialization.IdentifiedDataSerializable;
import com.hazelcast.spi.Operation;
import com.hazelcast.spi.ResponseHandler;
import com.hazelcast.spi.WaitNotifyKey;
import com.hazelcast.spi.WaitSupport;
public class AcquireOperation extends SemaphoreBackupAwareOperation
implements WaitSupport, IdentifiedDataSerializable {
public AcquireOperation() {
}
public AcquireOperation(String name, int permitCount, long timeout) {
super(name, permitCount);
setWaitTimeout(timeout);
}
@Override
public void run() throws Exception {
Permit permit = getPermit();
response = permit.acquire(permitCount, getCallerUuid());
}
@Override
public WaitNotifyKey getWaitKey() {
return new SemaphoreWaitNotifyKey(name, "acquire");
}
@Override
public boolean shouldWait() {
Permit permit = getPermit();
return getWaitTimeout() != 0 && !permit.isAvailable(permitCount);
}
@Override
public void onWaitExpire() {
ResponseHandler responseHandler = getResponseHandler();
responseHandler.sendResponse(false);
}
@Override
public boolean shouldBackup() {
return Boolean.TRUE.equals(response);
}
@Override
public Operation getBackupOperation() {
return new AcquireBackupOperation(name, permitCount, getCallerUuid());
}
@Override
public int getFactoryId() {
return SemaphoreDataSerializerHook.F_ID;
}
@Override
public int getId() {
return SemaphoreDataSerializerHook.ACQUIRE_OPERATION;
}
}