/*
* 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.lock.operations;
import com.hazelcast.concurrent.lock.ConditionKey;
import com.hazelcast.concurrent.lock.LockStoreImpl;
import com.hazelcast.concurrent.lock.LockWaitNotifyKey;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.spi.BackupAwareOperation;
import com.hazelcast.spi.Notifier;
import com.hazelcast.spi.ObjectNamespace;
import com.hazelcast.spi.Operation;
import com.hazelcast.spi.OperationService;
import com.hazelcast.spi.WaitNotifyKey;
import java.io.IOException;
public class UnlockOperation extends BaseLockOperation implements Notifier, BackupAwareOperation {
private boolean force;
private boolean shouldNotify;
public UnlockOperation() {
}
public UnlockOperation(ObjectNamespace namespace, Data key, long threadId) {
super(namespace, key, threadId);
}
public UnlockOperation(ObjectNamespace namespace, Data key, long threadId, boolean force) {
super(namespace, key, threadId);
this.force = force;
}
@Override
public void run() throws Exception {
if (force) {
forceUnlock();
} else {
unlock();
}
}
private void unlock() {
LockStoreImpl lockStore = getLockStore();
boolean unlocked = lockStore.unlock(key, getCallerUuid(), threadId);
response = unlocked;
ensureUnlocked(lockStore, unlocked);
}
private void ensureUnlocked(LockStoreImpl lockStore, boolean unlocked) {
if (!unlocked) {
String ownerInfo = lockStore.getOwnerInfo(key);
throw new IllegalMonitorStateException("Current thread is not owner of the lock! -> " + ownerInfo);
}
}
private void forceUnlock() {
LockStoreImpl lockStore = getLockStore();
response = lockStore.forceUnlock(key);
}
@Override
public void afterRun() throws Exception {
LockStoreImpl lockStore = getLockStore();
AwaitOperation awaitResponse = lockStore.pollExpiredAwaitOp(key);
if (awaitResponse != null) {
OperationService operationService = getNodeEngine().getOperationService();
operationService.runOperation(awaitResponse);
}
shouldNotify = awaitResponse == null;
}
@Override
public Operation getBackupOperation() {
return new UnlockBackupOperation(namespace, key, threadId, getCallerUuid(), force);
}
@Override
public boolean shouldBackup() {
return Boolean.TRUE.equals(response);
}
@Override
public boolean shouldNotify() {
return shouldNotify;
}
@Override
public final WaitNotifyKey getNotifiedKey() {
LockStoreImpl lockStore = getLockStore();
ConditionKey conditionKey = lockStore.getSignalKey(key);
if (conditionKey == null) {
return new LockWaitNotifyKey(namespace, key);
} else {
return conditionKey;
}
}
@Override
protected void writeInternal(ObjectDataOutput out) throws IOException {
super.writeInternal(out);
out.writeBoolean(force);
}
@Override
protected void readInternal(ObjectDataInput in) throws IOException {
super.readInternal(in);
force = in.readBoolean();
}
}