/*
*
* * Copyright 2014 Orient Technologies LTD (info(at)orientechnologies.com)
* *
* * 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.
* *
* * For more information: http://www.orientechnologies.com
*
*/
package com.orientechnologies.orient.server.distributed.task;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx;
import com.orientechnologies.orient.core.db.record.ORecordOperation;
import com.orientechnologies.orient.core.exception.OConcurrentModificationException;
import com.orientechnologies.orient.core.id.ORecordId;
import com.orientechnologies.orient.core.record.ORecord;
import com.orientechnologies.orient.core.version.ORecordVersion;
import com.orientechnologies.orient.server.OServer;
import com.orientechnologies.orient.server.distributed.ODistributedRequest;
import com.orientechnologies.orient.server.distributed.ODistributedServerLog;
import com.orientechnologies.orient.server.distributed.ODistributedServerLog.DIRECTION;
import com.orientechnologies.orient.server.distributed.ODistributedServerManager;
import com.orientechnologies.orient.server.distributed.ODistributedStorage;
/**
* Distributed delete record task used for synchronization.
*
* @author Luca Garulli (l.garulli--at--orientechnologies.com)
*
*/
public class ODeleteRecordTask extends OAbstractRecordReplicatedTask {
private static final long serialVersionUID = 1L;
private boolean delayed = false;
public ODeleteRecordTask() {
}
public ODeleteRecordTask(final ORecordId iRid, final ORecordVersion iVersion) {
super(iRid, iVersion);
}
@Override
public Object execute(final OServer iServer, ODistributedServerManager iManager, final ODatabaseDocumentTx database)
throws Exception {
ODistributedServerLog.debug(this, iManager.getLocalNodeName(), null, DIRECTION.IN, "delete record %s/%s v.%s",
database.getName(), rid.toString(), version.toString());
final ORecord record = database.load(rid);
if (record != null) {
if (delayed)
if (record.getRecordVersion().equals(version))
// POSTPONE DELETION TO BE UNDO IN CASE QUORUM IS NOT RESPECTED
((ODistributedStorage) database.getStorage()).pushDeletedRecord(rid, version);
else
throw new OConcurrentModificationException(rid, record.getRecordVersion(), version, ORecordOperation.DELETED);
else
// DELETE IT RIGHT NOW
record.delete();
}
return true;
}
@Override
public QUORUM_TYPE getQuorumType() {
return QUORUM_TYPE.WRITE;
}
@Override
public OResurrectRecordTask getFixTask(final ODistributedRequest iRequest, final Object iBadResponse, final Object iGoodResponse) {
return new OResurrectRecordTask(rid, version);
}
@Override
public OAbstractRemoteTask getUndoTask(final ODistributedRequest iRequest, final Object iBadResponse) {
if( iBadResponse instanceof Throwable)
return null;
return new OResurrectRecordTask(rid, version);
}
@Override
public void writeExternal(final ObjectOutput out) throws IOException {
super.writeExternal(out);
out.writeBoolean(delayed);
}
@Override
public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
super.readExternal(in);
delayed = in.readBoolean();
}
@Override
public String getName() {
return "record_delete";
}
public ODeleteRecordTask setDelayed(final boolean delayed) {
this.delayed = delayed;
return this;
}
@Override
public String toString() {
return super.toString() + " delayed=" + delayed;
}
}