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/**
* Copyright (c) 2004 - 2011 Eike Stepper (Berlin, Germany) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.emf.cdo.server.internal.net4j.protocol;
import org.eclipse.emf.cdo.common.branch.CDOBranch;
import org.eclipse.emf.cdo.common.commit.CDOCommitInfo;
import org.eclipse.emf.cdo.common.lock.IDurableLockingManager.LockArea;
import org.eclipse.emf.cdo.common.protocol.CDODataInput;
import org.eclipse.emf.cdo.common.protocol.CDODataOutput;
import org.eclipse.emf.cdo.common.protocol.CDOProtocolConstants;
import org.eclipse.emf.cdo.spi.common.CDOReplicationContext;
import org.eclipse.net4j.util.WrappedException;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
/**
* @author Eike Stepper
*/
public class ReplicateRepositoryIndication extends CDOServerReadIndication
{
private int lastReplicatedBranchID;
private long lastReplicatedCommitTime;
private String[] lockAreaIDs;
public ReplicateRepositoryIndication(CDOServerProtocol protocol)
{
super(protocol, CDOProtocolConstants.SIGNAL_REPLICATE_REPOSITORY);
}
@Override
protected void indicating(CDODataInput in) throws IOException
{
lastReplicatedBranchID = in.readInt();
lastReplicatedCommitTime = in.readLong();
lockAreaIDs = new String[in.readInt()];
for (int i = 0; i < lockAreaIDs.length; i++)
{
lockAreaIDs[i] = in.readString();
}
}
private Set<String> createLockAreaIDSet()
{
Set<String> idSet = new HashSet<String>(lockAreaIDs.length);
for (String id : lockAreaIDs)
{
idSet.add(id);
}
return idSet;
}
@Override
protected void responding(final CDODataOutput out) throws IOException
{
// We will remove IDs from this set as we process lockAreas one by one;
// what remains in this set at the end are the lockAreas that the client
// has, but we don't have, which means that they were removed.
//
final Set<String> lockAreaIDSet = createLockAreaIDSet();
getRepository().replicate(new CDOReplicationContext()
{
public int getLastReplicatedBranchID()
{
return lastReplicatedBranchID;
}
public long getLastReplicatedCommitTime()
{
return lastReplicatedCommitTime;
}
public String[] getLockAreaIDs()
{
return lockAreaIDs;
}
public void handleBranch(CDOBranch branch)
{
try
{
out.writeByte(CDOProtocolConstants.REPLICATE_BRANCH);
out.writeCDOBranch(branch);
}
catch (IOException ex)
{
throw WrappedException.wrap(ex);
}
}
public void handleCommitInfo(CDOCommitInfo commitInfo)
{
try
{
out.writeByte(CDOProtocolConstants.REPLICATE_COMMIT);
out.writeCDOCommitInfo(commitInfo);
}
catch (IOException ex)
{
throw WrappedException.wrap(ex);
}
}
public boolean handleLockArea(LockArea lockArea)
{
try
{
out.writeByte(CDOProtocolConstants.REPLICATE_LOCKAREA);
out.writeBoolean(true);
out.writeCDOLockArea(lockArea);
lockAreaIDSet.remove(lockArea.getDurableLockingID());
return true;
}
catch (IOException ex)
{
throw WrappedException.wrap(ex);
}
}
});
// The IDs that are still in the lockAreaIDSet, must be the IDs of lockAreas that have
// been removed.
for (String deletedLockAreaID : lockAreaIDSet)
{
out.writeByte(CDOProtocolConstants.REPLICATE_LOCKAREA);
out.writeBoolean(false);
out.writeString(deletedLockAreaID);
}
out.writeByte(CDOProtocolConstants.REPLICATE_FINISHED);
}
}
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