/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
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* or http://forgerock.org/license/CDDLv1.0.html.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at legal-notices/CDDLv1_0.txt.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2006-2010 Sun Microsystems, Inc.
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* Portions Copyright 2011-2016 ForgeRock AS
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*/
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package org.opends.server.replication.plugin;
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import static org.opends.messages.ReplicationMessages.*;
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import static org.opends.server.replication.plugin.ReplicationRepairRequestControl.*;
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import static org.opends.server.util.ServerConstants.*;
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import static org.opends.server.util.StaticUtils.*;
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import java.util.ArrayList;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import java.util.concurrent.BlockingQueue;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.LinkedBlockingQueue;
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import java.util.concurrent.atomic.AtomicReference;
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import org.forgerock.i18n.LocalizableMessage;
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import org.forgerock.i18n.slf4j.LocalizedLogger;
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import org.forgerock.opendj.config.server.ConfigChangeResult;
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import org.forgerock.opendj.config.server.ConfigException;
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import org.forgerock.opendj.ldap.ResultCode;
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import org.opends.server.admin.server.ConfigurationAddListener;
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import org.opends.server.admin.server.ConfigurationChangeListener;
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import org.opends.server.admin.server.ConfigurationDeleteListener;
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import org.opends.server.admin.std.server.ReplicationDomainCfg;
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import org.opends.server.admin.std.server.ReplicationSynchronizationProviderCfg;
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import org.opends.server.api.Backend;
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import org.opends.server.api.BackupTaskListener;
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import org.opends.server.api.ExportTaskListener;
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import org.opends.server.api.ImportTaskListener;
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import org.opends.server.api.RestoreTaskListener;
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import org.opends.server.api.SynchronizationProvider;
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import org.opends.server.core.DirectoryServer;
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import org.opends.server.replication.service.DSRSShutdownSync;
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import org.opends.server.types.BackupConfig;
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import org.opends.server.types.Control;
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import org.opends.server.types.DN;
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import org.opends.server.types.DirectoryException;
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import org.opends.server.types.Entry;
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import org.opends.server.types.LDIFExportConfig;
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import org.opends.server.types.LDIFImportConfig;
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import org.opends.server.types.Modification;
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import org.opends.server.types.Operation;
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import org.opends.server.types.RestoreConfig;
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import org.opends.server.types.SynchronizationProviderResult;
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import org.opends.server.types.operation.PluginOperation;
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import org.opends.server.types.operation.PostOperationAddOperation;
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import org.opends.server.types.operation.PostOperationDeleteOperation;
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import org.opends.server.types.operation.PostOperationModifyDNOperation;
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import org.opends.server.types.operation.PostOperationModifyOperation;
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import org.opends.server.types.operation.PostOperationOperation;
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import org.opends.server.types.operation.PreOperationAddOperation;
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import org.opends.server.types.operation.PreOperationDeleteOperation;
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import org.opends.server.types.operation.PreOperationModifyDNOperation;
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import org.opends.server.types.operation.PreOperationModifyOperation;
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import org.opends.server.util.Platform;
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/**
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* This class is used to load the Replication code inside the JVM
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* and to trigger initialization of the replication.
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*
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* It also extends the SynchronizationProvider class in order to have some
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* replication code running during the operation process
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* as pre-op, conflictResolution, and post-op.
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*/
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public class MultimasterReplication
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extends SynchronizationProvider<ReplicationSynchronizationProviderCfg>
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implements ConfigurationAddListener<ReplicationDomainCfg>,
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ConfigurationDeleteListener<ReplicationDomainCfg>,
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ConfigurationChangeListener
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<ReplicationSynchronizationProviderCfg>,
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BackupTaskListener, RestoreTaskListener, ImportTaskListener,
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ExportTaskListener
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{
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private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
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private ReplicationServerListener replicationServerListener;
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private static final Map<DN, LDAPReplicationDomain> domains = new ConcurrentHashMap<>(4);
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private static final DSRSShutdownSync dsrsShutdownSync = new DSRSShutdownSync();
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/** The queue of received update messages, to be treated by the ReplayThread threads. */
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private static final BlockingQueue<UpdateToReplay> updateToReplayQueue = new LinkedBlockingQueue<>(10000);
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/** The list of ReplayThread threads. */
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private static final List<ReplayThread> replayThreads = new ArrayList<>();
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/** The configurable number of replay threads. */
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private static int replayThreadNumber = 10;
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/** Enum that symbolizes the state of the multimaster replication. */
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private static enum State
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{
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STARTING, RUNNING, STOPPING
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}
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private static final AtomicReference<State> state = new AtomicReference<>(State.STARTING);
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/** The configurable connection/handshake timeout. */
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private static volatile int connectionTimeoutMS = 5000;
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/**
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* Finds the domain for a given DN.
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*
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* @param dn The DN for which the domain must be returned.
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* @param pluginOp An optional operation for which the check is done.
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* Can be null is the request has no associated operation.
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* @return The domain for this DN.
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*/
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public static LDAPReplicationDomain findDomain(DN dn, PluginOperation pluginOp)
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{
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/*
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* Don't run the special replication code on Operation that are
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* specifically marked as don't synchronize.
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*/
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if (pluginOp instanceof Operation)
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{
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final Operation op = (Operation) pluginOp;
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if (op.dontSynchronize())
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{
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return null;
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}
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/*
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* Check if the provided operation is a repair operation and set the
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* synchronization flags if necessary.
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* The repair operations are tagged as synchronization operations so
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* that the core server let the operation modify the entryuuid and
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* ds-sync-hist attributes.
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* They are also tagged as dontSynchronize so that the replication code
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* running later do not generate CSN, solve conflicts and forward the
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* operation to the replication server.
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*/
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for (Iterator<Control> it = op.getRequestControls().iterator(); it.hasNext();)
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{
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Control c = it.next();
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if (OID_REPLICATION_REPAIR_CONTROL.equals(c.getOID()))
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{
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op.setSynchronizationOperation(true);
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op.setDontSynchronize(true);
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/*
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remove this control from the list of controls since it has now been
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processed and the local backend will fail if it finds a control that
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it does not know about and that is marked as critical.
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*/
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it.remove();
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return null;
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}
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}
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}
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LDAPReplicationDomain domain = null;
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DN temp = dn;
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while (domain == null && temp != null)
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{
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domain = domains.get(temp);
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temp = DirectoryServer.getParentDNInSuffix(temp);
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}
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return domain;
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}
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/**
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* Creates a new domain from its configEntry, do the
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* necessary initialization and starts it so that it is
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* fully operational when this method returns.
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* @param configuration The entry with the configuration of this domain.
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* @return The domain created.
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* @throws ConfigException When the configuration is not valid.
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*/
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public static LDAPReplicationDomain createNewDomain(
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ReplicationDomainCfg configuration)
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throws ConfigException
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{
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try
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{
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final LDAPReplicationDomain domain = new LDAPReplicationDomain(
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configuration, updateToReplayQueue, dsrsShutdownSync);
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if (domains.isEmpty())
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{
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// Create the threads that will process incoming update messages
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createReplayThreads();
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}
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domains.put(domain.getBaseDN(), domain);
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return domain;
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}
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catch (ConfigException e)
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{
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logger.error(ERR_COULD_NOT_START_REPLICATION, configuration.dn(),
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e.getLocalizedMessage() + " " + stackTraceToSingleLineString(e));
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}
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return null;
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}
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/**
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* Creates a new domain from its configEntry, do the necessary initialization
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* and starts it so that it is fully operational when this method returns. It
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* is only used for tests so far.
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*
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* @param configuration The entry with the configuration of this domain.
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* @param queue The BlockingQueue that this domain will use.
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*
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* @return The domain created.
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*
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* @throws ConfigException When the configuration is not valid.
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*/
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static LDAPReplicationDomain createNewDomain(
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ReplicationDomainCfg configuration,
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BlockingQueue<UpdateToReplay> queue)
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throws ConfigException
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{
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final LDAPReplicationDomain domain =
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new LDAPReplicationDomain(configuration, queue, dsrsShutdownSync);
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domains.put(domain.getBaseDN(), domain);
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return domain;
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}
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/**
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* Deletes a domain.
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* @param dn : the base DN of the domain to delete.
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*/
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public static void deleteDomain(DN dn)
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{
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LDAPReplicationDomain domain = domains.remove(dn);
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if (domain != null)
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{
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domain.delete();
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}
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// No replay threads running if no replication need
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if (domains.isEmpty()) {
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stopReplayThreads();
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}
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}
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/** {@inheritDoc} */
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@Override
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public void initializeSynchronizationProvider(
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ReplicationSynchronizationProviderCfg cfg) throws ConfigException
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{
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domains.clear();
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replicationServerListener = new ReplicationServerListener(cfg, dsrsShutdownSync);
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// Register as an add and delete listener with the root configuration so we
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// can be notified if Multimaster domain entries are added or removed.
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cfg.addReplicationDomainAddListener(this);
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cfg.addReplicationDomainDeleteListener(this);
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// Register as a root configuration listener so that we can be notified if
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// number of replay threads is changed and apply changes.
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cfg.addReplicationChangeListener(this);
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replayThreadNumber = getNumberOfReplayThreadsOrDefault(cfg);
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connectionTimeoutMS = (int) Math.min(cfg.getConnectionTimeout(), Integer.MAX_VALUE);
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// Create the list of domains that are already defined.
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for (String name : cfg.listReplicationDomains())
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{
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createNewDomain(cfg.getReplicationDomain(name));
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}
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// If any schema changes were made with the server offline, then handle them now.
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List<Modification> offlineSchemaChanges =
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DirectoryServer.getOfflineSchemaChanges();
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if (offlineSchemaChanges != null && !offlineSchemaChanges.isEmpty())
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{
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processSchemaChange(offlineSchemaChanges);
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}
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DirectoryServer.registerBackupTaskListener(this);
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DirectoryServer.registerRestoreTaskListener(this);
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DirectoryServer.registerExportTaskListener(this);
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DirectoryServer.registerImportTaskListener(this);
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DirectoryServer.registerSupportedControl(
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ReplicationRepairRequestControl.OID_REPLICATION_REPAIR_CONTROL);
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}
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private int getNumberOfReplayThreadsOrDefault(ReplicationSynchronizationProviderCfg cfg)
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{
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Integer value = cfg.getNumUpdateReplayThreads();
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return value == null ? Platform.computeNumberOfThreads(16, 2.0f) : value;
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}
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/**
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* Create the threads that will wait for incoming update messages.
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*/
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private static synchronized void createReplayThreads()
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{
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replayThreads.clear();
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for (int i = 0; i < replayThreadNumber; i++)
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{
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ReplayThread replayThread = new ReplayThread(updateToReplayQueue);
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replayThread.start();
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replayThreads.add(replayThread);
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}
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}
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/**
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* Stop the threads that are waiting for incoming update messages.
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*/
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private static synchronized void stopReplayThreads()
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{
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// stop the replay threads
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for (ReplayThread replayThread : replayThreads)
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{
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replayThread.shutdown();
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}
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for (ReplayThread replayThread : replayThreads)
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{
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try
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{
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replayThread.join();
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}
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catch(InterruptedException e)
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{
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Thread.currentThread().interrupt();
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}
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}
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replayThreads.clear();
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}
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/** {@inheritDoc} */
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@Override
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public boolean isConfigurationAddAcceptable(
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ReplicationDomainCfg configuration, List<LocalizableMessage> unacceptableReasons)
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{
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return LDAPReplicationDomain.isConfigurationAcceptable(
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configuration, unacceptableReasons);
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}
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/** {@inheritDoc} */
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@Override
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public ConfigChangeResult applyConfigurationAdd(
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ReplicationDomainCfg configuration)
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{
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ConfigChangeResult ccr = new ConfigChangeResult();
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try
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{
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LDAPReplicationDomain rd = createNewDomain(configuration);
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if (State.RUNNING.equals(state.get()))
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{
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rd.start();
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if (State.STOPPING.equals(state.get())) {
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rd.shutdown();
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}
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}
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} catch (ConfigException e)
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{
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// we should never get to this point because the configEntry has
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// already been validated in isConfigurationAddAcceptable()
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ccr.setResultCode(ResultCode.CONSTRAINT_VIOLATION);
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}
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return ccr;
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}
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/** {@inheritDoc} */
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@Override
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public void doPostOperation(PostOperationAddOperation addOperation)
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{
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DN dn = addOperation.getEntryDN();
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genericPostOperation(addOperation, dn);
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}
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/** {@inheritDoc} */
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@Override
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public void doPostOperation(PostOperationDeleteOperation deleteOperation)
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{
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DN dn = deleteOperation.getEntryDN();
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genericPostOperation(deleteOperation, dn);
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}
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/** {@inheritDoc} */
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@Override
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public void doPostOperation(PostOperationModifyDNOperation modifyDNOperation)
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{
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DN dn = modifyDNOperation.getEntryDN();
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genericPostOperation(modifyDNOperation, dn);
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}
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/** {@inheritDoc} */
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@Override
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public void doPostOperation(PostOperationModifyOperation modifyOperation)
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{
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DN dn = modifyOperation.getEntryDN();
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genericPostOperation(modifyOperation, dn);
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}
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/** {@inheritDoc} */
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@Override
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public SynchronizationProviderResult handleConflictResolution(
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PreOperationModifyOperation modifyOperation)
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{
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LDAPReplicationDomain domain = findDomain(modifyOperation.getEntryDN(), modifyOperation);
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if (domain != null)
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{
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return domain.handleConflictResolution(modifyOperation);
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}
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return new SynchronizationProviderResult.ContinueProcessing();
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}
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/** {@inheritDoc} */
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@Override
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public SynchronizationProviderResult handleConflictResolution(
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PreOperationAddOperation addOperation) throws DirectoryException
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{
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LDAPReplicationDomain domain = findDomain(addOperation.getEntryDN(), addOperation);
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if (domain != null)
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{
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return domain.handleConflictResolution(addOperation);
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}
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return new SynchronizationProviderResult.ContinueProcessing();
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}
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/** {@inheritDoc} */
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@Override
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public SynchronizationProviderResult handleConflictResolution(
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PreOperationDeleteOperation deleteOperation) throws DirectoryException
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{
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LDAPReplicationDomain domain = findDomain(deleteOperation.getEntryDN(), deleteOperation);
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if (domain != null)
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{
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return domain.handleConflictResolution(deleteOperation);
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}
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return new SynchronizationProviderResult.ContinueProcessing();
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}
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/** {@inheritDoc} */
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@Override
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public SynchronizationProviderResult handleConflictResolution(
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PreOperationModifyDNOperation modifyDNOperation) throws DirectoryException
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{
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LDAPReplicationDomain domain = findDomain(modifyDNOperation.getEntryDN(), modifyDNOperation);
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if (domain != null)
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{
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return domain.handleConflictResolution(modifyDNOperation);
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}
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return new SynchronizationProviderResult.ContinueProcessing();
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}
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/** {@inheritDoc} */
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@Override
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public SynchronizationProviderResult
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doPreOperation(PreOperationModifyOperation modifyOperation)
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{
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DN operationDN = modifyOperation.getEntryDN();
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LDAPReplicationDomain domain = findDomain(operationDN, modifyOperation);
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if (domain == null || !domain.solveConflict())
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{
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return new SynchronizationProviderResult.ContinueProcessing();
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}
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EntryHistorical historicalInformation = (EntryHistorical)
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modifyOperation.getAttachment(EntryHistorical.HISTORICAL);
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if (historicalInformation == null)
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{
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Entry entry = modifyOperation.getModifiedEntry();
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historicalInformation = EntryHistorical.newInstanceFromEntry(entry);
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modifyOperation.setAttachment(EntryHistorical.HISTORICAL,
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historicalInformation);
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}
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historicalInformation.setPurgeDelay(domain.getHistoricalPurgeDelay());
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historicalInformation.setHistoricalAttrToOperation(modifyOperation);
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if (modifyOperation.getModifications().isEmpty())
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{
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/*
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* This operation becomes a no-op due to conflict resolution
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* stop the processing and send an OK result
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*/
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return new SynchronizationProviderResult.StopProcessing(
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ResultCode.SUCCESS, null);
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}
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return new SynchronizationProviderResult.ContinueProcessing();
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}
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/** {@inheritDoc} */
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@Override
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public SynchronizationProviderResult doPreOperation(
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PreOperationDeleteOperation deleteOperation) throws DirectoryException
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{
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return new SynchronizationProviderResult.ContinueProcessing();
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}
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/** {@inheritDoc} */
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@Override
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public SynchronizationProviderResult doPreOperation(
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PreOperationModifyDNOperation modifyDNOperation)
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throws DirectoryException
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{
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DN operationDN = modifyDNOperation.getEntryDN();
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LDAPReplicationDomain domain = findDomain(operationDN, modifyDNOperation);
|
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if (domain == null || !domain.solveConflict())
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{
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return new SynchronizationProviderResult.ContinueProcessing();
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}
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// The historical object is retrieved from the attachment created
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// in the HandleConflictResolution phase.
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EntryHistorical historicalInformation = (EntryHistorical)
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modifyDNOperation.getAttachment(EntryHistorical.HISTORICAL);
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if (historicalInformation == null)
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{
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// When no Historical attached, create once by loading from the entry
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// and attach it to the operation
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Entry entry = modifyDNOperation.getUpdatedEntry();
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historicalInformation = EntryHistorical.newInstanceFromEntry(entry);
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modifyDNOperation.setAttachment(EntryHistorical.HISTORICAL,
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historicalInformation);
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}
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historicalInformation.setPurgeDelay(domain.getHistoricalPurgeDelay());
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// Add to the operation the historical attribute : "dn:changeNumber:moddn"
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historicalInformation.setHistoricalAttrToOperation(modifyDNOperation);
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return new SynchronizationProviderResult.ContinueProcessing();
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}
|
|
/** {@inheritDoc} */
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@Override
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public SynchronizationProviderResult doPreOperation(
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PreOperationAddOperation addOperation)
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{
|
// Check replication domain
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LDAPReplicationDomain domain =
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findDomain(addOperation.getEntryDN(), addOperation);
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if (domain == null)
|
{
|
return new SynchronizationProviderResult.ContinueProcessing();
|
}
|
|
// For LOCAL op only, generate CSN and attach Context
|
if (!addOperation.isSynchronizationOperation())
|
{
|
domain.doPreOperation(addOperation);
|
}
|
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// Add to the operation the historical attribute : "dn:changeNumber:add"
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EntryHistorical.setHistoricalAttrToOperation(addOperation);
|
|
return new SynchronizationProviderResult.ContinueProcessing();
|
}
|
|
/** {@inheritDoc} */
|
@Override
|
public void finalizeSynchronizationProvider()
|
{
|
setState(State.STOPPING);
|
|
for (LDAPReplicationDomain domain : domains.values())
|
{
|
domain.shutdown();
|
}
|
domains.clear();
|
|
stopReplayThreads();
|
|
if (replicationServerListener != null)
|
{
|
replicationServerListener.shutdown();
|
}
|
|
DirectoryServer.deregisterBackupTaskListener(this);
|
DirectoryServer.deregisterRestoreTaskListener(this);
|
DirectoryServer.deregisterExportTaskListener(this);
|
DirectoryServer.deregisterImportTaskListener(this);
|
}
|
|
/**
|
* This method is called whenever the server detects a modification
|
* of the schema done by directly modifying the backing files
|
* of the schema backend.
|
* Call the schema Domain if it exists.
|
*
|
* @param modifications The list of modifications that was
|
* applied to the schema.
|
*
|
*/
|
@Override
|
public void processSchemaChange(List<Modification> modifications)
|
{
|
LDAPReplicationDomain domain = findDomain(DirectoryServer.getSchemaDN(), null);
|
if (domain != null)
|
{
|
domain.synchronizeSchemaModifications(modifications);
|
}
|
}
|
|
/** {@inheritDoc} */
|
@Override
|
public void processBackupBegin(Backend backend, BackupConfig config)
|
{
|
for (DN dn : backend.getBaseDNs())
|
{
|
LDAPReplicationDomain domain = findDomain(dn, null);
|
if (domain != null)
|
{
|
domain.backupStart();
|
}
|
}
|
}
|
|
/** {@inheritDoc} */
|
@Override
|
public void processBackupEnd(Backend backend, BackupConfig config,
|
boolean successful)
|
{
|
for (DN dn : backend.getBaseDNs())
|
{
|
LDAPReplicationDomain domain = findDomain(dn, null);
|
if (domain != null)
|
{
|
domain.backupEnd();
|
}
|
}
|
}
|
|
/** {@inheritDoc} */
|
@Override
|
public void processRestoreBegin(Backend backend, RestoreConfig config)
|
{
|
for (DN dn : backend.getBaseDNs())
|
{
|
LDAPReplicationDomain domain = findDomain(dn, null);
|
if (domain != null)
|
{
|
domain.disable();
|
}
|
}
|
}
|
|
/** {@inheritDoc} */
|
@Override
|
public void processRestoreEnd(Backend backend, RestoreConfig config,
|
boolean successful)
|
{
|
for (DN dn : backend.getBaseDNs())
|
{
|
LDAPReplicationDomain domain = findDomain(dn, null);
|
if (domain != null)
|
{
|
domain.enable();
|
}
|
}
|
}
|
|
/** {@inheritDoc} */
|
@Override
|
public void processImportBegin(Backend backend, LDIFImportConfig config)
|
{
|
for (DN dn : backend.getBaseDNs())
|
{
|
LDAPReplicationDomain domain = findDomain(dn, null);
|
if (domain != null)
|
{
|
domain.disable();
|
}
|
}
|
}
|
|
/** {@inheritDoc} */
|
@Override
|
public void processImportEnd(Backend backend, LDIFImportConfig config,
|
boolean successful)
|
{
|
for (DN dn : backend.getBaseDNs())
|
{
|
LDAPReplicationDomain domain = findDomain(dn, null);
|
if (domain != null)
|
{
|
domain.enable();
|
}
|
}
|
}
|
|
/** {@inheritDoc} */
|
@Override
|
public void processExportBegin(Backend backend, LDIFExportConfig config)
|
{
|
for (DN dn : backend.getBaseDNs())
|
{
|
LDAPReplicationDomain domain = findDomain(dn, null);
|
if (domain != null)
|
{
|
domain.backupStart();
|
}
|
}
|
}
|
|
/** {@inheritDoc} */
|
@Override
|
public void processExportEnd(Backend backend, LDIFExportConfig config,
|
boolean successful)
|
{
|
for (DN dn : backend.getBaseDNs())
|
{
|
LDAPReplicationDomain domain = findDomain(dn, null);
|
if (domain != null)
|
{
|
domain.backupEnd();
|
}
|
}
|
}
|
|
/** {@inheritDoc} */
|
@Override
|
public ConfigChangeResult applyConfigurationDelete(
|
ReplicationDomainCfg configuration)
|
{
|
deleteDomain(configuration.getBaseDN());
|
|
return new ConfigChangeResult();
|
}
|
|
/** {@inheritDoc} */
|
@Override
|
public boolean isConfigurationDeleteAcceptable(
|
ReplicationDomainCfg configuration, List<LocalizableMessage> unacceptableReasons)
|
{
|
return true;
|
}
|
|
/**
|
* Generic code for all the postOperation entry point.
|
*
|
* @param operation The Operation for which the post-operation is called.
|
* @param dn The Dn for which the post-operation is called.
|
*/
|
private void genericPostOperation(PostOperationOperation operation, DN dn)
|
{
|
LDAPReplicationDomain domain = findDomain(dn, operation);
|
if (domain != null) {
|
domain.synchronize(operation);
|
}
|
}
|
|
/**
|
* Returns the replication server listener associated to that Multimaster
|
* Replication.
|
* @return the listener.
|
*/
|
public ReplicationServerListener getReplicationServerListener()
|
{
|
return replicationServerListener;
|
}
|
|
/** {@inheritDoc} */
|
@Override
|
public boolean isConfigurationChangeAcceptable(
|
ReplicationSynchronizationProviderCfg configuration,
|
List<LocalizableMessage> unacceptableReasons)
|
{
|
return true;
|
}
|
|
@Override
|
public ConfigChangeResult applyConfigurationChange(ReplicationSynchronizationProviderCfg configuration)
|
{
|
|
// Stop threads then restart new number of threads
|
stopReplayThreads();
|
replayThreadNumber = getNumberOfReplayThreadsOrDefault(configuration);
|
if (!domains.isEmpty())
|
{
|
createReplayThreads();
|
}
|
|
connectionTimeoutMS = (int) Math.min(configuration.getConnectionTimeout(),
|
Integer.MAX_VALUE);
|
|
return new ConfigChangeResult();
|
}
|
|
/** {@inheritDoc} */
|
@Override
|
public void completeSynchronizationProvider()
|
{
|
for (LDAPReplicationDomain domain : domains.values())
|
{
|
domain.start();
|
}
|
setState(State.RUNNING);
|
}
|
|
private void setState(State newState)
|
{
|
state.set(newState);
|
synchronized (state)
|
{
|
state.notifyAll();
|
}
|
}
|
|
/**
|
* Gets the number of handled domain objects.
|
* @return The number of handled domain objects
|
*/
|
public static int getNumberOfDomains()
|
{
|
return domains.size();
|
}
|
|
/**
|
* Gets the Set of domain baseDN which are disabled for the external changelog.
|
*
|
* @return The Set of domain baseDNs which are disabled for the external changelog.
|
* @throws DirectoryException
|
* if a problem occurs
|
*/
|
public static Set<DN> getExcludedChangelogDomains() throws DirectoryException
|
{
|
final Set<DN> disabledBaseDNs = new HashSet<>(domains.size() + 1);
|
disabledBaseDNs.add(DN.valueOf(DN_EXTERNAL_CHANGELOG_ROOT));
|
for (LDAPReplicationDomain domain : domains.values())
|
{
|
if (!domain.isECLEnabled())
|
{
|
disabledBaseDNs.add(domain.getBaseDN());
|
}
|
}
|
return disabledBaseDNs;
|
}
|
|
/**
|
* Returns whether the provided baseDN represents a replication domain enabled
|
* for the external changelog.
|
*
|
* @param baseDN
|
* the replication domain to check
|
* @return true if the provided baseDN is enabled for the external changelog,
|
* false if the provided baseDN is disabled for the external changelog
|
* or unknown to multimaster replication.
|
*/
|
public static boolean isECLEnabledDomain(DN baseDN)
|
{
|
waitForStartup();
|
// if state is STOPPING, then we need to return from this method
|
final LDAPReplicationDomain domain = domains.get(baseDN);
|
return domain != null && domain.isECLEnabled();
|
}
|
|
/**
|
* Returns whether the external change-log contains data from at least a domain.
|
* @return whether the external change-log contains data from at least a domain
|
*/
|
public static boolean isECLEnabled()
|
{
|
waitForStartup();
|
for (LDAPReplicationDomain domain : domains.values())
|
{
|
if (domain.isECLEnabled())
|
{
|
return true;
|
}
|
}
|
return false;
|
}
|
|
private static void waitForStartup()
|
{
|
if (State.STARTING.equals(state.get()))
|
{
|
synchronized (state)
|
{
|
while (State.STARTING.equals(state.get()))
|
{
|
try
|
{
|
state.wait();
|
}
|
catch (InterruptedException ignored)
|
{
|
// loop and check state again
|
}
|
}
|
}
|
}
|
}
|
|
/**
|
* Returns the connection timeout in milli-seconds.
|
*
|
* @return The connection timeout in milli-seconds.
|
*/
|
public static int getConnectionTimeoutMS()
|
{
|
return connectionTimeoutMS;
|
}
|
|
}
|
