/*
* 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.spi.impl;
import com.hazelcast.logging.ILogger;
import com.hazelcast.nio.Address;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.nio.serialization.IdentifiedDataSerializable;
import com.hazelcast.partition.InternalPartition;
import com.hazelcast.partition.InternalPartitionService;
import com.hazelcast.partition.ReplicaErrorLogger;
import com.hazelcast.spi.BackupOperation;
import com.hazelcast.spi.NodeEngine;
import com.hazelcast.spi.Operation;
import com.hazelcast.spi.OperationAccessor;
import com.hazelcast.spi.OperationService;
import com.hazelcast.util.Clock;
import java.io.IOException;
import java.util.Arrays;
final class Backup extends Operation implements BackupOperation, IdentifiedDataSerializable {
private Data backupOpData;
private Address originalCaller;
private long[] replicaVersions;
private boolean sync;
private Operation backupOp;
private boolean valid = true;
Backup() {
}
Backup(Data backupOp, Address originalCaller, long[] replicaVersions, boolean sync) {
this.backupOpData = backupOp;
this.originalCaller = originalCaller;
this.sync = sync;
this.replicaVersions = replicaVersions;
if (sync && originalCaller == null) {
throw new IllegalArgumentException("Sync backup requires original caller address, Op: " + backupOp);
}
}
@Override
public void beforeRun() throws Exception {
final NodeEngine nodeEngine = getNodeEngine();
final int partitionId = getPartitionId();
final InternalPartition partition = nodeEngine.getPartitionService().getPartition(partitionId);
final Address owner = partition.getReplicaAddress(getReplicaIndex());
if (!nodeEngine.getThisAddress().equals(owner)) {
valid = false;
final ILogger logger = getLogger();
if (logger.isFinestEnabled()) {
logger.finest("Wrong target! " + toString() + " cannot be processed! Target should be: " + owner);
}
}
}
@Override
public void run() throws Exception {
if (!valid) {
return;
}
NodeEngine nodeEngine = getNodeEngine();
InternalPartitionService partitionService = nodeEngine.getPartitionService();
partitionService.updatePartitionReplicaVersions(getPartitionId(), replicaVersions, getReplicaIndex());
if (backupOpData != null) {
backupOp = nodeEngine.getSerializationService().toObject(backupOpData);
backupOp.setNodeEngine(nodeEngine);
backupOp.setResponseHandler(ResponseHandlerFactory.createEmptyResponseHandler());
backupOp.setCallerUuid(getCallerUuid());
OperationAccessor.setCallerAddress(backupOp, getCallerAddress());
OperationAccessor.setInvocationTime(backupOp, Clock.currentTimeMillis());
final OperationService operationService = nodeEngine.getOperationService();
operationService.runOperationOnCallingThread(backupOp);
}
}
@Override
public void afterRun() throws Exception {
if (valid && sync && getCallId() != 0 && originalCaller != null) {
final NodeEngineImpl nodeEngine = (NodeEngineImpl) getNodeEngine();
final long callId = getCallId();
final InternalOperationService operationService = nodeEngine.operationService;
if (!nodeEngine.getThisAddress().equals(originalCaller)) {
BackupResponse backupResponse = new BackupResponse(callId, backupOp.isUrgent());
operationService.send(backupResponse, originalCaller);
} else {
operationService.notifyBackupCall(callId);
}
}
}
@Override
public boolean returnsResponse() {
return false;
}
@Override
public Object getResponse() {
return null;
}
@Override
public boolean validatesTarget() {
return false;
}
@Override
public void logError(Throwable e) {
ReplicaErrorLogger.log(e, getLogger());
}
@Override
protected void writeInternal(ObjectDataOutput out) throws IOException {
out.writeData(backupOpData);
if (originalCaller != null) {
out.writeBoolean(true);
originalCaller.writeData(out);
} else {
out.writeBoolean(false);
}
out.writeLongArray(replicaVersions);
out.writeBoolean(sync);
}
@Override
protected void readInternal(ObjectDataInput in) throws IOException {
backupOpData = in.readData();
if (in.readBoolean()) {
originalCaller = new Address();
originalCaller.readData(in);
}
replicaVersions = in.readLongArray();
sync = in.readBoolean();
}
@Override
public int getFactoryId() {
return SpiDataSerializerHook.F_ID;
}
@Override
public int getId() {
return SpiDataSerializerHook.BACKUP;
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder();
sb.append("Backup");
sb.append("{backupOpBinary=").append(backupOpData);
sb.append(", originalCaller=").append(originalCaller);
sb.append(", version=").append(Arrays.toString(replicaVersions));
sb.append(", sync=").append(sync);
sb.append('}');
return sb.toString();
}
}