/*
* 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.partition.impl;
import com.hazelcast.logging.ILogger;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.partition.MigrationCycleOperation;
import com.hazelcast.partition.MigrationEndpoint;
import com.hazelcast.spi.AbstractOperation;
import com.hazelcast.spi.MigrationAwareService;
import com.hazelcast.spi.PartitionAwareOperation;
import com.hazelcast.spi.PartitionMigrationEvent;
import com.hazelcast.spi.impl.NodeEngineImpl;
import java.io.IOException;
// runs locally...
final class PromoteFromBackupOperation extends AbstractOperation
implements PartitionAwareOperation, MigrationCycleOperation {
@Override
public void run() throws Exception {
logPromotingPartition();
try {
PartitionMigrationEvent event = createPartitionMigrationEvent();
sendToAllMigrationAwareServices(event);
} finally {
clearPartitionMigratingFlag();
}
}
private void clearPartitionMigratingFlag() {
InternalPartitionServiceImpl service = getService();
InternalPartitionImpl partition = service.getPartition(getPartitionId());
partition.setMigrating(false);
}
private void sendToAllMigrationAwareServices(PartitionMigrationEvent event) {
NodeEngineImpl nodeEngine = (NodeEngineImpl) getNodeEngine();
for (MigrationAwareService service : nodeEngine.getServices(MigrationAwareService.class)) {
try {
service.beforeMigration(event);
service.commitMigration(event);
} catch (Throwable e) {
logMigrationError(e);
}
}
}
private PartitionMigrationEvent createPartitionMigrationEvent() {
int partitionId = getPartitionId();
return new PartitionMigrationEvent(MigrationEndpoint.DESTINATION, partitionId);
}
private void logMigrationError(Throwable e) {
ILogger logger = getLogger();
logger.warning("While promoting partition " + getPartitionId(), e);
}
private void logPromotingPartition() {
ILogger logger = getLogger();
if (logger.isFinestEnabled()) {
logger.finest("Promoting partition " + getPartitionId());
}
}
@Override
public boolean returnsResponse() {
return false;
}
@Override
public boolean validatesTarget() {
return false;
}
@Override
protected void readInternal(ObjectDataInput in) throws IOException {
throw new UnsupportedOperationException();
}
@Override
protected void writeInternal(ObjectDataOutput out) throws IOException {
throw new UnsupportedOperationException();
}
}