/*
* 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.InternalPartitionService;
import com.hazelcast.partition.ReplicaErrorLogger;
import com.hazelcast.spi.Operation;
import com.hazelcast.spi.PartitionAwareOperation;
import java.io.IOException;
// should not be an urgent operation. required to be in order with backup operations on target node
public final class CheckReplicaVersion extends Operation implements PartitionAwareOperation {
private long version;
private boolean returnResponse;
private boolean response;
public CheckReplicaVersion() {
}
public CheckReplicaVersion(long version, boolean returnResponse) {
this.version = version;
this.returnResponse = returnResponse;
}
@Override
public void beforeRun() throws Exception {
}
@Override
public void run() throws Exception {
InternalPartitionServiceImpl partitionService = getService();
int partitionId = getPartitionId();
int replicaIndex = getReplicaIndex();
long[] currentVersions = partitionService.getPartitionReplicaVersions(partitionId);
long currentVersion = currentVersions[replicaIndex - 1];
if (currentVersion == version) {
response = true;
} else {
logBackupVersionMismatch(currentVersion);
partitionService.triggerPartitionReplicaSync(partitionId, replicaIndex);
response = false;
}
}
private void logBackupVersionMismatch(long currentVersion) {
ILogger logger = getLogger();
if (logger.isFinestEnabled()) {
logger.finest("Partition: " + getPartitionId() + " version is not matching to version of the owner -> "
+ currentVersion + " -vs- " + version);
}
}
@Override
public void afterRun() throws Exception {
}
@Override
public boolean returnsResponse() {
return returnResponse;
}
@Override
public Object getResponse() {
return response;
}
@Override
public boolean validatesTarget() {
return false;
}
@Override
public String getServiceName() {
return InternalPartitionService.SERVICE_NAME;
}
@Override
public void logError(Throwable e) {
ReplicaErrorLogger.log(e, getLogger());
}
@Override
protected void writeInternal(ObjectDataOutput out) throws IOException {
out.writeLong(version);
out.writeBoolean(returnResponse);
}
@Override
protected void readInternal(ObjectDataInput in) throws IOException {
version = in.readLong();
returnResponse = in.readBoolean();
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder();
sb.append("CheckReplicaVersion");
sb.append("{partition=").append(getPartitionId());
sb.append(", replica=").append(getReplicaIndex());
sb.append(", version=").append(version);
sb.append('}');
return sb.toString();
}
}