/*
|
* CDDL HEADER START
|
*
|
* The contents of this file are subject to the terms of the
|
* Common Development and Distribution License, Version 1.0 only
|
* (the "License"). You may not use this file except in compliance
|
* with the License.
|
*
|
* You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
|
* or http://forgerock.org/license/CDDLv1.0.html.
|
* See the License for the specific language governing permissions
|
* and limitations under the License.
|
*
|
* When distributing Covered Code, include this CDDL HEADER in each
|
* file and include the License file at legal-notices/CDDLv1_0.txt.
|
* If applicable, add the following below this CDDL HEADER, with the
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
* information:
|
* Portions Copyright [yyyy] [name of copyright owner]
|
*
|
* CDDL HEADER END
|
*
|
* Copyright 2014 ForgeRock AS
|
*/
|
package org.opends.server.replication.server.changelog.je;
|
|
import java.util.Iterator;
|
import java.util.Map.Entry;
|
import java.util.concurrent.ConcurrentSkipListMap;
|
import java.util.concurrent.ConcurrentSkipListSet;
|
|
import org.opends.server.replication.common.ServerState;
|
import org.opends.server.replication.protocol.UpdateMsg;
|
import org.opends.server.replication.server.changelog.api.ChangelogException;
|
import org.opends.server.replication.server.changelog.api.DBCursor;
|
import org.opends.server.replication.server.changelog.api.ReplicationDomainDB;
|
import org.opends.server.types.DN;
|
|
/**
|
* Cursor iterating over a all the replication domain known to the changelog DB.
|
*
|
* \@NotThreadSafe
|
*/
|
public class MultiDomainDBCursor extends CompositeDBCursor<DN>
|
{
|
private final ReplicationDomainDB domainDB;
|
|
private final ConcurrentSkipListMap<DN, ServerState> newDomains =
|
new ConcurrentSkipListMap<DN, ServerState>();
|
private final ConcurrentSkipListSet<DN> removeDomains =
|
new ConcurrentSkipListSet<DN>();
|
|
/**
|
* Builds a MultiDomainDBCursor instance.
|
*
|
* @param domainDB
|
* the replication domain management DB
|
*/
|
public MultiDomainDBCursor(ReplicationDomainDB domainDB)
|
{
|
this.domainDB = domainDB;
|
}
|
|
/**
|
* Adds a replication domain for this cursor to iterate over. Added cursors
|
* will be created and iterated over on the next call to {@link #next()}.
|
*
|
* @param baseDN
|
* the replication domain's baseDN
|
* @param startAfterState
|
* the {@link ServerState} after which to start iterating
|
*/
|
public void addDomain(DN baseDN, ServerState startAfterState)
|
{
|
newDomains.put(baseDN,
|
startAfterState != null ? startAfterState : new ServerState());
|
}
|
|
/** {@inheritDoc} */
|
@Override
|
protected void incorporateNewCursors() throws ChangelogException
|
{
|
for (Iterator<Entry<DN, ServerState>> iter = newDomains.entrySet().iterator();
|
iter.hasNext();)
|
{
|
final Entry<DN, ServerState> entry = iter.next();
|
final DN baseDN = entry.getKey();
|
final ServerState serverState = entry.getValue();
|
final DBCursor<UpdateMsg> domainDBCursor = domainDB.getCursorFrom(baseDN, serverState);
|
addCursor(domainDBCursor, baseDN);
|
iter.remove();
|
}
|
}
|
|
/**
|
* Removes a replication domain from this cursor and stops iterating over it.
|
* Removed cursors will be effectively removed on the next call to
|
* {@link #next()}.
|
*
|
* @param baseDN
|
* the replication domain's baseDN
|
*/
|
public void removeDomain(DN baseDN)
|
{
|
removeDomains.add(baseDN);
|
}
|
|
/** {@inheritDoc} */
|
@Override
|
protected Iterator<DN> removedCursorsIterator()
|
{
|
return removeDomains.iterator();
|
}
|
|
/** {@inheritDoc} */
|
@Override
|
public void close()
|
{
|
super.close();
|
domainDB.unregisterCursor(this);
|
newDomains.clear();
|
removeDomains.clear();
|
}
|
|
}
|
