/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.directory.server.ldap.replication;
import org.apache.directory.server.i18n.I18n;
import org.apache.directory.server.ldap.LdapSession;
import org.apache.directory.shared.ldap.codec.controls.replication.syncDoneValue.SyncDoneValueControl;
import org.apache.directory.shared.ldap.codec.search.SearchResultDoneCodec;
import org.apache.directory.shared.ldap.message.control.Control;
import org.apache.directory.shared.ldap.message.internal.InternalSearchResponseDone;
import org.apache.directory.shared.ldap.util.StringTools;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Handle the SearchResultDone response, received from a producer server, when
* replication is set.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
* @version $Rev$, $Date$
*/
public class SearchResultDoneResponseHandler<T extends InternalSearchResponseDone>
{
private static final Logger LOG = LoggerFactory.getLogger( SearchResultDoneResponseHandler.class );
/** Speedup for logs */
private static final boolean IS_DEBUG = LOG.isDebugEnabled();
public final void handle( LdapSession session, T response ) throws Exception
{
LOG.debug( "Handling single searchResultDone response: {}", response );
SearchResultDoneCodec searchResult = (SearchResultDoneCodec)response;
// Get the control
Control control = searchResult.getCurrentControl();
SyncDoneValueControl syncDoneCtrl = ( SyncDoneValueControl ) control;
/** the sync cookie sent by the server */
byte[] syncCookie;
if ( syncDoneCtrl.getCookie() != null )
{
syncCookie = syncDoneCtrl.getCookie();
LOG.debug( "assigning cookie from sync done value control: {}", StringTools.utf8ToString( syncCookie ) );
}
else
{
LOG.info( "cookie in syncdone message is null" );
}
SyncreplConfiguration config = (SyncreplConfiguration)session.getIoSession().getAttribute( "SYNC_COOKIE" );
if ( !config.isRefreshPersist() )
{
// Now, switch to refreshAndPresist
config.setRefreshPersist( true );
LOG.debug( "Swithing to RefreshAndPersist" );
try
{
// the below call is required to send the updated cookie
// and refresh mode change (i.e to refreshAndPersist stage)
// cause while the startSync() method sleeps even after the 'sync done'
// message arrives as part of initial searchRequest with 'refreshOnly' mode.
// During this sleep time any 'modifications' happened on the server
// to already fetched entries will be sent as SearchResultEntries with
// SyncState value as 'ADD' which will conflict with the DNs of initially received entries
// TODO thinking of alternative ways to implement this in case of large DITs
// where the modification to entry(ies) can happen before the initial sync is done
//doSyncSearch();
}
catch( Exception e )
{
LOG.error( I18n.err( I18n.ERR_170 ), e );
}
}
}
}