001/*
002 * CDDL HEADER START
003 *
004 * The contents of this file are subject to the terms of the
005 * Common Development and Distribution License, Version 1.0 only
006 * (the "License").  You may not use this file except in compliance
007 * with the License.
008 *
009 * You can obtain a copy of the license at
010 * docs/licenses/cddl.txt
011 * or http://www.opensource.org/licenses/cddl1.php.
012 * See the License for the specific language governing permissions
013 * and limitations under the License.
014 *
015 * When distributing Covered Code, include this CDDL HEADER in each
016 * file and include the License file at
017 * docs/licenses/cddl.txt.  If applicable,
018 * add the following below this CDDL HEADER, with the fields enclosed
019 * by brackets "[]" replaced with your own identifying information:
020 *      Portions Copyright [yyyy] [name of copyright owner]
021 *
022 * CDDL HEADER END
023 *
024 *
025 *      Portions Copyright 2010-2023 Ping Identity Corporation
026 */
027package com.unboundid.directory.sdk.common.scripting;
028
029
030
031import java.security.cert.Certificate;
032import java.util.List;
033import java.util.Map;
034
035import com.unboundid.directory.sdk.broker.internal.BrokerExtension;
036import com.unboundid.directory.sdk.common.config.FileBasedAccessLoggerConfig;
037import com.unboundid.directory.sdk.common.internal.Reconfigurable;
038import com.unboundid.directory.sdk.common.operation.AbandonRequest;
039import com.unboundid.directory.sdk.common.operation.AddRequest;
040import com.unboundid.directory.sdk.common.operation.AddResult;
041import com.unboundid.directory.sdk.common.operation.BindResult;
042import com.unboundid.directory.sdk.common.operation.CompareRequest;
043import com.unboundid.directory.sdk.common.operation.CompareResult;
044import com.unboundid.directory.sdk.common.operation.DeleteRequest;
045import com.unboundid.directory.sdk.common.operation.DeleteResult;
046import com.unboundid.directory.sdk.common.operation.ExtendedRequest;
047import com.unboundid.directory.sdk.common.operation.ExtendedResult;
048import com.unboundid.directory.sdk.common.operation.GenericResult;
049import com.unboundid.directory.sdk.common.operation.ModifyRequest;
050import com.unboundid.directory.sdk.common.operation.ModifyResult;
051import com.unboundid.directory.sdk.common.operation.ModifyDNRequest;
052import com.unboundid.directory.sdk.common.operation.ModifyDNResult;
053import com.unboundid.directory.sdk.common.operation.SASLBindRequest;
054import com.unboundid.directory.sdk.common.operation.SearchRequest;
055import com.unboundid.directory.sdk.common.operation.SearchResult;
056import com.unboundid.directory.sdk.common.operation.SimpleBindRequest;
057import com.unboundid.directory.sdk.common.operation.UnbindRequest;
058import com.unboundid.directory.sdk.common.types.AssuredReplicationResult;
059import com.unboundid.directory.sdk.common.types.ClientContext;
060import com.unboundid.directory.sdk.common.types.CompletedOperationContext;
061import com.unboundid.directory.sdk.common.types.CompletedSearchOperationContext;
062import com.unboundid.directory.sdk.common.types.DisconnectReason;
063import com.unboundid.directory.sdk.common.types.Entry;
064import com.unboundid.directory.sdk.common.types.ForwardTarget;
065import com.unboundid.directory.sdk.common.types.OperationContext;
066import com.unboundid.directory.sdk.common.types.ServerContext;
067import com.unboundid.directory.sdk.ds.internal.DirectoryServerExtension;
068import com.unboundid.directory.sdk.metrics.internal.MetricsEngineExtension;
069import com.unboundid.directory.sdk.proxy.internal.DirectoryProxyServerExtension;
070import com.unboundid.directory.sdk.sync.internal.SynchronizationServerExtension;
071import com.unboundid.ldap.sdk.Control;
072import com.unboundid.ldap.sdk.IntermediateResponse;
073import com.unboundid.ldap.sdk.LDAPException;
074import com.unboundid.ldap.sdk.ResultCode;
075import com.unboundid.ldap.sdk.unboundidds.MoveSubtreeResult;
076import com.unboundid.util.Extensible;
077import com.unboundid.util.ThreadSafety;
078import com.unboundid.util.ThreadSafetyLevel;
079import com.unboundid.util.args.ArgumentException;
080import com.unboundid.util.args.ArgumentParser;
081
082
083
084/**
085 * This class defines an API that may be used to create a specific type of
086 * scripted access logger which is intended to write log messages to text files.
087 * This is a convenience for developers which wish to create custom access
088 * loggers that write to text files and provides support for a wide range of
089 * functionality including high-performance and highly-concurrent logging.  All
090 * of the options available to {@link ScriptedAccessLogger} implementations are
091 * available for file-based access loggers, as well as options for indicating
092 * the log file path, the rotation and retention policies, whether to buffer the
093 * output, etc.
094 * <BR><BR>
095 * Note that scripted file-based access loggers will automatically be registered
096 * within the server as disk space consumers, so there is no need to implement
097 * the {@link com.unboundid.directory.sdk.common.api.DiskSpaceConsumer}
098 * interface.  Also note that configuration change related to the log file
099 * (e.g., the log file path, buffer size, queue size, etc.) will also
100 * automatically be handled by the server, so subclasses only need to be
101 * concerned about changes to the custom arguments they define.
102 * <BR>
103 * <H2>Configuring File-Based Access Loggers</H2>
104 * In order to configure an access logger created using this API, use a command
105 * like:
106 * <PRE>
107 *      dsconfig create-log-publisher \
108 *           --publisher-name "<I>{logger-name}</I>" \
109 *           --type groovy-scripted-file-based-access \
110 *           --set enabled:true \
111 *           --set "log-file:<I>{path}</I>" \
112 *           --set "rotation-policy:<I>{rotation-policy-name}</I>" \
113 *           --set "retention-policy:<I>{retention-policy-name}</I>" \
114 *           --set "script-class:<I>{class-name}</I>" \
115 *           --set "script-argument:<I>{name=value}</I>"
116 * </PRE>
117 * where "<I>{logger-name}</I>" is the name to use for the access logger
118 * instance, "<I>{path}</I>" is the path to the log file to be written,
119 * "<I>{rotation-policy-name}</I>" is the name of the log rotation policy to use
120 * for the log file, "<I>{retention-policy-name}</I>" is the name of the log
121 * retention policy to use for the log file, "<I>{class-name}</I>" is the
122 * fully-qualified name of the Groovy class written using this API, and
123 * "<I>{name=value}</I>" represents name-value pairs for any arguments to
124 * provide to the logger.  If multiple arguments should be provided to the
125 * logger, then the "<CODE>--set script-argument:<I>{name=value}</I></CODE>"
126 * option should be provided multiple times.  It is also possible to specify
127 * multiple log rotation and/or retention policies if desired.
128 *
129 * @see  com.unboundid.directory.sdk.common.api.AccessLogger
130 * @see  com.unboundid.directory.sdk.common.api.FileBasedAccessLogger
131 * @see  ScriptedAccessLogger
132 */
133@Extensible()
134@DirectoryServerExtension()
135@DirectoryProxyServerExtension(appliesToLocalContent=true,
136     appliesToRemoteContent=false)
137@SynchronizationServerExtension(appliesToLocalContent=true,
138     appliesToSynchronizedContent=false)
139@MetricsEngineExtension()
140@BrokerExtension()
141@ThreadSafety(level=ThreadSafetyLevel.INTERFACE_THREADSAFE)
142public abstract class ScriptedFileBasedAccessLogger
143       implements Reconfigurable<FileBasedAccessLoggerConfig>
144{
145  /**
146   * Creates a new instance of this access logger.  All access logger
147   * implementations must include a default constructor, but any initialization
148   * should generally be done in the {@code initializeAccessLogger} method.
149   */
150  public ScriptedFileBasedAccessLogger()
151  {
152    // No implementation is required.
153  }
154
155
156
157  /**
158   * {@inheritDoc}
159   */
160  public void defineConfigArguments(final ArgumentParser parser)
161         throws ArgumentException
162  {
163    // No arguments will be allowed by default.
164  }
165
166
167
168  /**
169   * Initializes this access logger.
170   *
171   * @param  serverContext  A handle to the server context for the server in
172   *                        which this extension is running.
173   * @param  config         The general configuration for this access logger.
174   * @param  parser         The argument parser which has been initialized from
175   *                        the configuration for this access logger.
176   *
177   * @throws  LDAPException  If a problem occurs while initializing this access
178   *                         logger.
179   */
180  public void initializeAccessLogger(final ServerContext serverContext,
181                                     final FileBasedAccessLoggerConfig config,
182                                     final ArgumentParser parser)
183         throws LDAPException
184  {
185    // No initialization will be performed by default.
186  }
187
188
189
190  /**
191   * {@inheritDoc}
192   */
193  public boolean isConfigurationAcceptable(
194                      final FileBasedAccessLoggerConfig config,
195                      final ArgumentParser parser,
196                      final List<String> unacceptableReasons)
197  {
198    // No extended validation will be performed by default.
199    return true;
200  }
201
202
203
204  /**
205   * {@inheritDoc}
206   */
207  public ResultCode applyConfiguration(final FileBasedAccessLoggerConfig config,
208                                       final ArgumentParser parser,
209                                       final List<String> adminActionsRequired,
210                                       final List<String> messages)
211  {
212    // By default, no configuration changes will be applied.  If there are any
213    // arguments, then add an admin action message indicating that the extension
214    // needs to be restarted for any changes to take effect.
215    if (! parser.getNamedArguments().isEmpty())
216    {
217      adminActionsRequired.add(
218           "No configuration change has actually been applied.  The new " +
219                "configuration will not take effect until this access logger " +
220                "is disabled and re-enabled or until the server is restarted.");
221    }
222
223    return ResultCode.SUCCESS;
224  }
225
226
227
228  /**
229   * Performs any cleanup which may be necessary when this access logger is to
230   * be taken out of service.
231   */
232  public void finalizeAccessLogger()
233  {
234    // No implementation is required.
235  }
236
237
238
239  /**
240   * Logs a message indicating that a new connection has been established.
241   *
242   * @param  clientContext  Information about the client connection that has
243   *                        been accepted.
244   *
245   * @return  The content of the log message that should be written.  It may be
246   *          {@code null} or empty if no message should be written.  It may
247   *          optionally include line breaks if the log message should span
248   *          multiple lines.
249   */
250  public CharSequence logConnect(final ClientContext clientContext)
251  {
252    // No log message will be generated by default.
253    return null;
254  }
255
256
257
258  /**
259   * Logs a message indicating that a connection has been closed.
260   *
261   * @param  clientContext     Information about the client connection that has
262   *                           been closed.
263   * @param  disconnectReason  A general reason that the connection has been
264   *                           closed.
265   * @param  message           A message with additional information about the
266   *                           closure.  It may be {@code null} if none is
267   *                           available.
268   *
269   * @return  The content of the log message that should be written.  It may be
270   *          {@code null} or empty if no message should be written.  It may
271   *          optionally include line breaks if the log message should span
272   *          multiple lines.
273   */
274  public CharSequence logDisconnect(final ClientContext clientContext,
275                                    final DisconnectReason disconnectReason,
276                                    final String message)
277  {
278    // No log message will be generated by default.
279    return null;
280  }
281
282
283
284  /**
285   * Logs a message about security negotiation performed by a client.
286   *
287   * @param  clientContext  Information about the client connection on which
288   *                        the negotiation was completed.
289   * @param  protocol       The security protocol selected by the negotiation.
290   *                        It may be {@code null} if no protocol is available.
291   * @param  cipher         The cipher suite selected by the negotiation.  It
292   *                        may be {@code null} if no cipher is available.
293   * @param  properties     A set of additional properties that may be included
294   *                        in the log message.  It may be {@code null} or empty
295   *                        if no additional properties are needed.
296   *
297   * @return  The content of the log message that should be written.  It may be
298   *          {@code null} or empty if no message should be written.  It may
299   *          optionally include line breaks if the log message should span
300   *          multiple lines.
301   */
302  public CharSequence logSecurityNegotiation(final ClientContext clientContext,
303                           final String protocol, final String cipher,
304                           final Map<String,String> properties)
305  {
306    // No log message will be generated by default.
307    return null;
308  }
309
310
311
312  /**
313   * Logs a message about a certificate chain presented by a client.
314   *
315   * @param  clientContext  Information about the client that presented the
316   *                        certificate chain.
317   * @param  certChain      The certificate chain presented by the client.
318   * @param  authDN         The DN of the user as whom the client was
319   *                        automatically authenticated, or {@code null} if the
320   *                        client was not automatically authenticated.
321   *
322   * @return  The content of the log message that should be written.  It may be
323   *          {@code null} or empty if no message should be written.  It may
324   *          optionally include line breaks if the log message should span
325   *          multiple lines.
326   */
327  public CharSequence logClientCertificateChain(
328                           final ClientContext clientContext,
329                           final Certificate[] certChain, final String authDN)
330  {
331    // No log message will be generated by default.
332    return null;
333  }
334
335
336
337  /**
338   * Logs a message about an abandon request received from a client.
339   *
340   * @param  opContext  The operation context for the abandon operation.
341   * @param  request    The abandon request that was received.
342   *
343   * @return  The content of the log message that should be written.  It may be
344   *          {@code null} or empty if no message should be written.  It may
345   *          optionally include line breaks if the log message should span
346   *          multiple lines.
347   */
348  public CharSequence logAbandonRequest(final OperationContext opContext,
349                                        final AbandonRequest request)
350  {
351    // No log message will be generated by default.
352    return null;
353  }
354
355
356
357  /**
358   * Logs a message about an abandon request that will be forwarded to another
359   * server.
360   *
361   * @param  opContext  The operation context for the abandon operation.
362   * @param  request    The abandon request that was received.
363   * @param  target     Information about the server to which the request will
364   *                    be forwarded.
365   *
366   * @return  The content of the log message that should be written.  It may be
367   *          {@code null} or empty if no message should be written.  It may
368   *          optionally include line breaks if the log message should span
369   *          multiple lines.
370   */
371  public CharSequence logAbandonForward(final OperationContext opContext,
372                                        final AbandonRequest request,
373                                        final ForwardTarget target)
374  {
375    // No log message will be generated by default.
376    return null;
377  }
378
379
380
381  /**
382   * Logs a message about the result of processing an abandon request.
383   *
384   * @param  opContext  The operation context for the abandon operation.
385   * @param  request    The abandon request that was received.
386   * @param  result     The result of processing the abandon request.
387   *
388   * @return  The content of the log message that should be written.  It may be
389   *          {@code null} or empty if no message should be written.  It may
390   *          optionally include line breaks if the log message should span
391   *          multiple lines.
392   */
393  public CharSequence logAbandonResult(
394                           final CompletedOperationContext opContext,
395                           final AbandonRequest request,
396                           final GenericResult result)
397  {
398    // No log message will be generated by default.
399    return null;
400  }
401
402
403
404  /**
405   * Logs a message about an add request received from a client.
406   *
407   * @param  opContext  The operation context for the add operation.
408   * @param  request    The add request that was received.
409   *
410   * @return  The content of the log message that should be written.  It may be
411   *          {@code null} or empty if no message should be written.  It may
412   *          optionally include line breaks if the log message should span
413   *          multiple lines.
414   */
415  public CharSequence logAddRequest(final OperationContext opContext,
416                                    final AddRequest request)
417  {
418    // No log message will be generated by default.
419    return null;
420  }
421
422
423
424  /**
425   * Logs a message about an add request that will be forwarded to another
426   * server.
427   *
428   * @param  opContext  The operation context for the add operation.
429   * @param  request    The add request that was received.
430   * @param  target     Information about the server to which the request will
431   *                    be forwarded.
432   *
433   * @return  The content of the log message that should be written.  It may be
434   *          {@code null} or empty if no message should be written.  It may
435   *          optionally include line breaks if the log message should span
436   *          multiple lines.
437   */
438  public CharSequence logAddForward(final OperationContext opContext,
439                                    final AddRequest request,
440                                    final ForwardTarget target)
441  {
442    // No log message will be generated by default.
443    return null;
444  }
445
446
447
448  /**
449   * Logs a message about a failure encountered while attempting to forward an
450   * add request to another server.
451   *
452   * @param  opContext  The operation context for the add operation.
453   * @param  request    The add request that was received.
454   * @param  target     Information about the server to which the request was
455   *                    forwarded.
456   * @param  failure    The exception that was received when attempting to
457   *                    forward the request.
458   *
459   * @return  The content of the log message that should be written.  It may be
460   *          {@code null} or empty if no message should be written.  It may
461   *          optionally include line breaks if the log message should span
462   *          multiple lines.
463   */
464  public CharSequence logAddForwardFailure(final OperationContext opContext,
465                                           final AddRequest request,
466                                           final ForwardTarget target,
467                                           final LDAPException failure)
468  {
469    // No log message will be generated by default.
470    return null;
471  }
472
473
474
475  /**
476   * Logs a message about the result of processing an add request.
477   *
478   * @param  opContext  The operation context for the add operation.
479   * @param  request    The add request that was received.
480   * @param  result     The result of processing the add request.
481   *
482   * @return  The content of the log message that should be written.  It may be
483   *          {@code null} or empty if no message should be written.  It may
484   *          optionally include line breaks if the log message should span
485   *          multiple lines.
486   */
487  public CharSequence logAddResponse(final CompletedOperationContext opContext,
488                                     final AddRequest request,
489                                     final AddResult result)
490  {
491    // No log message will be generated by default.
492    return null;
493  }
494
495
496
497  /**
498   * Logs a message about the result of replication assurance processing for an
499   * add operation.
500   *
501   * @param  opContext        The operation context for the add operation.
502   * @param  request          The add request that was received.
503   * @param  result           The result of processing the add request.
504   * @param  assuranceResult  The replication assurance processing result.
505   *
506   * @return  The content of the log message that should be written.  It may be
507   *          {@code null} or empty if no message should be written.  It may
508   *          optionally include line breaks if the log message should span
509   *          multiple lines.
510   */
511  public CharSequence logAddAssuranceCompleted(
512                           final CompletedOperationContext opContext,
513                           final AddRequest request, final AddResult result,
514                           final AssuredReplicationResult assuranceResult)
515  {
516    // No log message will be generated by default.
517    return null;
518  }
519
520
521
522  /**
523   * Logs a message about a simple bind request received from a client.
524   *
525   * @param  opContext  The operation context for the bind operation.
526   * @param  request    The bind request that was received.
527   *
528   * @return  The content of the log message that should be written.  It may be
529   *          {@code null} or empty if no message should be written.  It may
530   *          optionally include line breaks if the log message should span
531   *          multiple lines.
532   */
533  public CharSequence logBindRequest(final OperationContext opContext,
534                                     final SimpleBindRequest request)
535  {
536    // No log message will be generated by default.
537    return null;
538  }
539
540
541
542  /**
543   * Logs a message about a simple bind request that will be forwarded to
544   * another server.
545   *
546   * @param  opContext  The operation context for the bind operation.
547   * @param  request    The bind request that was received.
548   * @param  target     Information about the server to which the request will
549   *                    be forwarded.
550   *
551   * @return  The content of the log message that should be written.  It may be
552   *          {@code null} or empty if no message should be written.  It may
553   *          optionally include line breaks if the log message should span
554   *          multiple lines.
555   */
556  public CharSequence logBindForward(final OperationContext opContext,
557                                     final SimpleBindRequest request,
558                                     final ForwardTarget target)
559  {
560    // No log message will be generated by default.
561    return null;
562  }
563
564
565
566  /**
567   * Logs a message about a failure encountered while attempting to forward a
568   * simple bind request to another server.
569   *
570   * @param  opContext  The operation context for the bind operation.
571   * @param  request    The bind request that was received.
572   * @param  target     Information about the server to which the request was
573   *                    forwarded.
574   * @param  failure    The exception that was received when attempting to
575   *                    forward the request.
576   *
577   * @return  The content of the log message that should be written.  It may be
578   *          {@code null} or empty if no message should be written.  It may
579   *          optionally include line breaks if the log message should span
580   *          multiple lines.
581   */
582  public CharSequence logBindForwardFailure(final OperationContext opContext,
583                                            final SimpleBindRequest request,
584                                            final ForwardTarget target,
585                                            final LDAPException failure)
586  {
587    // No log message will be generated by default.
588    return null;
589  }
590
591
592
593  /**
594   * Logs a message about the result of processing a simple bind request.
595   *
596   * @param  opContext  The operation context for the bind operation.
597   * @param  request    The bind request that was received.
598   * @param  result     The result of processing the bind request.
599   *
600   * @return  The content of the log message that should be written.  It may be
601   *          {@code null} or empty if no message should be written.  It may
602   *          optionally include line breaks if the log message should span
603   *          multiple lines.
604   */
605  public CharSequence logBindResponse(final CompletedOperationContext opContext,
606                                      final SimpleBindRequest request,
607                                      final BindResult result)
608  {
609    // No log message will be generated by default.
610    return null;
611  }
612
613
614
615  /**
616   * Logs a message about a SASL bind request received from a client.
617   *
618   * @param  opContext  The operation context for the bind operation.
619   * @param  request    The bind request that was received.
620   *
621   * @return  The content of the log message that should be written.  It may be
622   *          {@code null} or empty if no message should be written.  It may
623   *          optionally include line breaks if the log message should span
624   *          multiple lines.
625   */
626  public CharSequence logBindRequest(final OperationContext opContext,
627                                     final SASLBindRequest request)
628  {
629    // No log message will be generated by default.
630    return null;
631  }
632
633
634
635  /**
636   * Logs a message about a SASL bind request that will be forwarded to
637   * another server.
638   *
639   * @param  opContext  The operation context for the bind operation.
640   * @param  request    The bind request that was received.
641   * @param  target     Information about the server to which the request will
642   *                    be forwarded.
643   *
644   * @return  The content of the log message that should be written.  It may be
645   *          {@code null} or empty if no message should be written.  It may
646   *          optionally include line breaks if the log message should span
647   *          multiple lines.
648   */
649  public CharSequence logBindForward(final OperationContext opContext,
650                                     final SASLBindRequest request,
651                                     final ForwardTarget target)
652  {
653    // No log message will be generated by default.
654    return null;
655  }
656
657
658
659  /**
660   * Logs a message about a failure encountered while attempting to forward a
661   * SASL bind request to another server.
662   *
663   * @param  opContext  The operation context for the bind operation.
664   * @param  request    The bind request that was received.
665   * @param  target     Information about the server to which the request was
666   *                    forwarded.
667   * @param  failure    The exception that was received when attempting to
668   *                    forward the request.
669   *
670   * @return  The content of the log message that should be written.  It may be
671   *          {@code null} or empty if no message should be written.  It may
672   *          optionally include line breaks if the log message should span
673   *          multiple lines.
674   */
675  public CharSequence logBindForwardFailure(final OperationContext opContext,
676                                            final SASLBindRequest request,
677                                            final ForwardTarget target,
678                                            final LDAPException failure)
679  {
680    // No log message will be generated by default.
681    return null;
682  }
683
684
685
686  /**
687   * Logs a message about the result of processing a SASL bind request.
688   *
689   * @param  opContext  The operation context for the bind operation.
690   * @param  request    The bind request that was received.
691   * @param  result     The result of processing the bind request.
692   *
693   * @return  The content of the log message that should be written.  It may be
694   *          {@code null} or empty if no message should be written.  It may
695   *          optionally include line breaks if the log message should span
696   *          multiple lines.
697   */
698  public CharSequence logBindResponse(final CompletedOperationContext opContext,
699                                      final SASLBindRequest request,
700                                      final BindResult result)
701  {
702    // No log message will be generated by default.
703    return null;
704  }
705
706
707
708  /**
709   * Logs a message about a compare request received from a client.
710   *
711   * @param  opContext  The operation context for the compare operation.
712   * @param  request    The compare request that was received.
713   *
714   * @return  The content of the log message that should be written.  It may be
715   *          {@code null} or empty if no message should be written.  It may
716   *          optionally include line breaks if the log message should span
717   *          multiple lines.
718   */
719  public CharSequence logCompareRequest(final OperationContext opContext,
720                                        final CompareRequest request)
721  {
722    // No log message will be generated by default.
723    return null;
724  }
725
726
727
728  /**
729   * Logs a message about a compare request that will be forwarded to another
730   * server.
731   *
732   * @param  opContext  The operation context for the compare operation.
733   * @param  request    The compare request that was received.
734   * @param  target     Information about the server to which the request will
735   *                    be forwarded.
736   *
737   * @return  The content of the log message that should be written.  It may be
738   *          {@code null} or empty if no message should be written.  It may
739   *          optionally include line breaks if the log message should span
740   *          multiple lines.
741   */
742  public CharSequence logCompareForward(final OperationContext opContext,
743                                        final CompareRequest request,
744                                        final ForwardTarget target)
745  {
746    // No log message will be generated by default.
747    return null;
748  }
749
750
751
752  /**
753   * Logs a message about a failure encountered while attempting to forward a
754   * compare request to another server.
755   *
756   * @param  opContext  The operation context for the compare operation.
757   * @param  request    The compare request that was received.
758   * @param  target     Information about the server to which the request was
759   *                    forwarded.
760   * @param  failure    The exception that was received when attempting to
761   *                    forward the request.
762   *
763   * @return  The content of the log message that should be written.  It may be
764   *          {@code null} or empty if no message should be written.  It may
765   *          optionally include line breaks if the log message should span
766   *          multiple lines.
767   */
768  public CharSequence logCompareForwardFailure(final OperationContext opContext,
769                                               final CompareRequest request,
770                                               final ForwardTarget target,
771                                               final LDAPException failure)
772  {
773    // No log message will be generated by default.
774    return null;
775  }
776
777
778
779  /**
780   * Logs a message about the result of processing a compare request.
781   *
782   * @param  opContext  The operation context for the compare operation.
783   * @param  request    The compare request that was received.
784   * @param  result     The result of processing the compare request.
785   *
786   * @return  The content of the log message that should be written.  It may be
787   *          {@code null} or empty if no message should be written.  It may
788   *          optionally include line breaks if the log message should span
789   *          multiple lines.
790   */
791  public CharSequence logCompareResponse(
792                           final CompletedOperationContext opContext,
793                           final CompareRequest request,
794                           final CompareResult result)
795  {
796    // No log message will be generated by default.
797    return null;
798  }
799
800
801
802  /**
803   * Logs a message about a delete request received from a client.
804   *
805   * @param  opContext  The operation context for the delete operation.
806   * @param  request    The delete request that was received.
807   *
808   * @return  The content of the log message that should be written.  It may be
809   *          {@code null} or empty if no message should be written.  It may
810   *          optionally include line breaks if the log message should span
811   *          multiple lines.
812   */
813  public CharSequence logDeleteRequest(final OperationContext opContext,
814                                       final DeleteRequest request)
815  {
816    // No log message will be generated by default.
817    return null;
818  }
819
820
821
822  /**
823   * Logs a message about a delete request that will be forwarded to another
824   * server.
825   *
826   * @param  opContext  The operation context for the delete operation.
827   * @param  request    The delete request that was received.
828   * @param  target     Information about the server to which the request will
829   *                    be forwarded.
830   *
831   * @return  The content of the log message that should be written.  It may be
832   *          {@code null} or empty if no message should be written.  It may
833   *          optionally include line breaks if the log message should span
834   *          multiple lines.
835   */
836  public CharSequence logDeleteForward(final OperationContext opContext,
837                                       final DeleteRequest request,
838                                       final ForwardTarget target)
839  {
840    // No log message will be generated by default.
841    return null;
842  }
843
844
845
846  /**
847   * Logs a message about a failure encountered while attempting to forward a
848   * delete request to another server.
849   *
850   * @param  opContext  The operation context for the delete operation.
851   * @param  request    The delete request that was received.
852   * @param  target     Information about the server to which the request was
853   *                    forwarded.
854   * @param  failure    The exception that was received when attempting to
855   *                    forward the request.
856   *
857   * @return  The content of the log message that should be written.  It may be
858   *          {@code null} or empty if no message should be written.  It may
859   *          optionally include line breaks if the log message should span
860   *          multiple lines.
861   */
862  public CharSequence logDeleteForwardFailure(final OperationContext opContext,
863                                              final DeleteRequest request,
864                                              final ForwardTarget target,
865                                              final LDAPException failure)
866  {
867    // No log message will be generated by default.
868    return null;
869  }
870
871
872
873  /**
874   * Logs a message about the result of processing a delete request.
875   *
876   * @param  opContext  The operation context for the delete operation.
877   * @param  request    The delete request that was received.
878   * @param  result     The result of processing the delete request.
879   *
880   * @return  The content of the log message that should be written.  It may be
881   *          {@code null} or empty if no message should be written.  It may
882   *          optionally include line breaks if the log message should span
883   *          multiple lines.
884   */
885  public CharSequence logDeleteResponse(
886                           final CompletedOperationContext opContext,
887                           final DeleteRequest request,
888                           final DeleteResult result)
889  {
890    // No log message will be generated by default.
891    return null;
892  }
893
894
895
896  /**
897   * Logs a message about the result of replication assurance processing for a
898   * delete operation.
899   *
900   * @param  opContext        The operation context for the delete operation.
901   * @param  request          The delete request that was received.
902   * @param  result           The result of processing the delete request.
903   * @param  assuranceResult  The replication assurance processing result.
904   *
905   * @return  The content of the log message that should be written.  It may be
906   *          {@code null} or empty if no message should be written.  It may
907   *          optionally include line breaks if the log message should span
908   *          multiple lines.
909   */
910  public CharSequence logDeleteAssuranceCompleted(
911                           final CompletedOperationContext opContext,
912                           final DeleteRequest request,
913                           final DeleteResult result,
914                           final AssuredReplicationResult assuranceResult)
915  {
916    // No log message will be generated by default.
917    return null;
918  }
919
920
921
922  /**
923   * Logs a message about an extended request received from a client.
924   *
925   * @param  opContext  The operation context for the extended operation.
926   * @param  request    The extended request that was received.
927   *
928   * @return  The content of the log message that should be written.  It may be
929   *          {@code null} or empty if no message should be written.  It may
930   *          optionally include line breaks if the log message should span
931   *          multiple lines.
932   */
933  public CharSequence logExtendedRequest(final OperationContext opContext,
934                                         final ExtendedRequest request)
935  {
936    // No log message will be generated by default.
937    return null;
938  }
939
940
941
942  /**
943   * Logs a message about an extended request that will be forwarded to another
944   * server.
945   *
946   * @param  opContext  The operation context for the extended operation.
947   * @param  request    The extended request that was received.
948   * @param  target     Information about the server to which the request will
949   *                    be forwarded.
950   *
951   * @return  The content of the log message that should be written.  It may be
952   *          {@code null} or empty if no message should be written.  It may
953   *          optionally include line breaks if the log message should span
954   *          multiple lines.
955   */
956  public CharSequence logExtendedForward(final OperationContext opContext,
957                                         final ExtendedRequest request,
958                                         final ForwardTarget target)
959  {
960    // No log message will be generated by default.
961    return null;
962  }
963
964
965
966  /**
967   * Logs a message about a failure encountered while attempting to forward an
968   * extended request to another server.
969   *
970   * @param  opContext  The operation context for the extended operation.
971   * @param  request    The extended request that was received.
972   * @param  target     Information about the server to which the request was
973   *                    forwarded.
974   * @param  failure    The exception that was received when attempting to
975   *                    forward the request.
976   *
977   * @return  The content of the log message that should be written.  It may be
978   *          {@code null} or empty if no message should be written.  It may
979   *          optionally include line breaks if the log message should span
980   *          multiple lines.
981   */
982  public CharSequence logExtendedForwardFailure(
983                           final OperationContext opContext,
984                           final ExtendedRequest request,
985                           final ForwardTarget target,
986                           final LDAPException failure)
987  {
988    // No log message will be generated by default.
989    return null;
990  }
991
992
993
994  /**
995   * Logs a message about the result of processing an extended request.
996   *
997   * @param  opContext  The operation context for the extended operation.
998   * @param  request    The extended request that was received.
999   * @param  result     The result of processing the extended request.
1000   *
1001   * @return  The content of the log message that should be written.  It may be
1002   *          {@code null} or empty if no message should be written.  It may
1003   *          optionally include line breaks if the log message should span
1004   *          multiple lines.
1005   */
1006  public CharSequence logExtendedResponse(
1007                           final CompletedOperationContext opContext,
1008                           final ExtendedRequest request,
1009                           final ExtendedResult result)
1010  {
1011    // No log message will be generated by default.
1012    return null;
1013  }
1014
1015
1016
1017  /**
1018   * Logs a message about a modify request received from a client.
1019   *
1020   * @param  opContext  The operation context for the modify operation.
1021   * @param  request    The modify request that was received.
1022   *
1023   * @return  The content of the log message that should be written.  It may be
1024   *          {@code null} or empty if no message should be written.  It may
1025   *          optionally include line breaks if the log message should span
1026   *          multiple lines.
1027   */
1028  public CharSequence logModifyRequest(final OperationContext opContext,
1029                                       final ModifyRequest request)
1030  {
1031    // No log message will be generated by default.
1032    return null;
1033  }
1034
1035
1036
1037  /**
1038   * Logs a message about a modify request that will be forwarded to another
1039   * server.
1040   *
1041   * @param  opContext  The operation context for the modify operation.
1042   * @param  request    The modify request that was received.
1043   * @param  target     Information about the server to which the request will
1044   *                    be forwarded.
1045   *
1046   * @return  The content of the log message that should be written.  It may be
1047   *          {@code null} or empty if no message should be written.  It may
1048   *          optionally include line breaks if the log message should span
1049   *          multiple lines.
1050   */
1051  public CharSequence logModifyForward(final OperationContext opContext,
1052                                       final ModifyRequest request,
1053                                       final ForwardTarget target)
1054  {
1055    // No log message will be generated by default.
1056    return null;
1057  }
1058
1059
1060
1061  /**
1062   * Logs a message about a failure encountered while attempting to forward a
1063   * modify request to another server.
1064   *
1065   * @param  opContext  The operation context for the modify operation.
1066   * @param  request    The modify request that was received.
1067   * @param  target     Information about the server to which the request was
1068   *                    forwarded.
1069   * @param  failure    The exception that was received when attempting to
1070   *                    forward the request.
1071   *
1072   * @return  The content of the log message that should be written.  It may be
1073   *          {@code null} or empty if no message should be written.  It may
1074   *          optionally include line breaks if the log message should span
1075   *          multiple lines.
1076   */
1077  public CharSequence logModifyForwardFailure(final OperationContext opContext,
1078                                              final ModifyRequest request,
1079                                              final ForwardTarget target,
1080                                              final LDAPException failure)
1081  {
1082    // No log message will be generated by default.
1083    return null;
1084  }
1085
1086
1087
1088  /**
1089   * Logs a message about the result of processing a modify request.
1090   *
1091   * @param  opContext  The operation context for the modify operation.
1092   * @param  request    The modify request that was received.
1093   * @param  result     The result of processing the modify request.
1094   *
1095   * @return  The content of the log message that should be written.  It may be
1096   *          {@code null} or empty if no message should be written.  It may
1097   *          optionally include line breaks if the log message should span
1098   *          multiple lines.
1099   */
1100  public CharSequence logModifyResponse(
1101                           final CompletedOperationContext opContext,
1102                           final ModifyRequest request,
1103                           final ModifyResult result)
1104  {
1105    // No log message will be generated by default.
1106    return null;
1107  }
1108
1109
1110
1111  /**
1112   * Logs a message about the result of replication assurance processing for a
1113   * modify operation.
1114   *
1115   * @param  opContext        The operation context for the modify operation.
1116   * @param  request          The modify request that was received.
1117   * @param  result           The result of processing the modify request.
1118   * @param  assuranceResult  The replication assurance processing result.
1119   *
1120   * @return  The content of the log message that should be written.  It may be
1121   *          {@code null} or empty if no message should be written.  It may
1122   *          optionally include line breaks if the log message should span
1123   *          multiple lines.
1124   */
1125  public CharSequence logModifyAssuranceCompleted(
1126                           final CompletedOperationContext opContext,
1127                           final ModifyRequest request,
1128                           final ModifyResult result,
1129                           final AssuredReplicationResult assuranceResult)
1130  {
1131    // No log message will be generated by default.
1132    return null;
1133  }
1134
1135
1136
1137  /**
1138   * Logs a message about a modify DN request received from a client.
1139   *
1140   * @param  opContext  The operation context for the modify DN operation.
1141   * @param  request    The modify DN request that was received.
1142   *
1143   * @return  The content of the log message that should be written.  It may be
1144   *          {@code null} or empty if no message should be written.  It may
1145   *          optionally include line breaks if the log message should span
1146   *          multiple lines.
1147   */
1148  public CharSequence logModifyDNRequest(final OperationContext opContext,
1149                                         final ModifyDNRequest request)
1150  {
1151    // No log message will be generated by default.
1152    return null;
1153  }
1154
1155
1156
1157  /**
1158   * Logs a message about a modify DN request that will be forwarded to another
1159   * server.
1160   *
1161   * @param  opContext  The operation context for the modify DN operation.
1162   * @param  request    The modify DN request that was received.
1163   * @param  target     Information about the server to which the request will
1164   *                    be forwarded.
1165   *
1166   * @return  The content of the log message that should be written.  It may be
1167   *          {@code null} or empty if no message should be written.  It may
1168   *          optionally include line breaks if the log message should span
1169   *          multiple lines.
1170   */
1171  public CharSequence logModifyDNForward(final OperationContext opContext,
1172                                         final ModifyDNRequest request,
1173                                         final ForwardTarget target)
1174  {
1175    // No log message will be generated by default.
1176    return null;
1177  }
1178
1179
1180
1181  /**
1182   * Logs a message about a failure encountered while attempting to forward a
1183   * modify DN request to another server.
1184   *
1185   * @param  opContext  The operation context for the modify DN operation.
1186   * @param  request    The modify DN request that was received.
1187   * @param  target     Information about the server to which the request was
1188   *                    forwarded.
1189   * @param  failure    The exception that was received when attempting to
1190   *                    forward the request.
1191   *
1192   * @return  The content of the log message that should be written.  It may be
1193   *          {@code null} or empty if no message should be written.  It may
1194   *          optionally include line breaks if the log message should span
1195   *          multiple lines.
1196   */
1197  public CharSequence logModifyDNForwardFailure(
1198                           final OperationContext opContext,
1199                           final ModifyDNRequest request,
1200                           final ForwardTarget target,
1201                           final LDAPException failure)
1202  {
1203    // No log message will be generated by default.
1204    return null;
1205  }
1206
1207
1208
1209  /**
1210   * Logs a message about the result of processing a modify DN request.
1211   *
1212   * @param  opContext  The operation context for the modify DN operation.
1213   * @param  request    The modify DN request that was received.
1214   * @param  result     The result of processing the modify DN request.
1215   *
1216   * @return  The content of the log message that should be written.  It may be
1217   *          {@code null} or empty if no message should be written.  It may
1218   *          optionally include line breaks if the log message should span
1219   *          multiple lines.
1220   */
1221  public CharSequence logModifyDNResponse(
1222                           final CompletedOperationContext opContext,
1223                           final ModifyDNRequest request,
1224                           final ModifyDNResult result)
1225  {
1226    // No log message will be generated by default.
1227    return null;
1228  }
1229
1230
1231
1232  /**
1233   * Logs a message about the result of replication assurance processing for a
1234   * modify DN operation.
1235   *
1236   * @param  opContext        The operation context for the modify DN operation.
1237   * @param  request          The modify DN request that was received.
1238   * @param  result           The result of processing the modify DN request.
1239   * @param  assuranceResult  The replication assurance processing result.
1240   *
1241   * @return  The content of the log message that should be written.  It may be
1242   *          {@code null} or empty if no message should be written.  It may
1243   *          optionally include line breaks if the log message should span
1244   *          multiple lines.
1245   */
1246  public CharSequence logModifyDNAssuranceCompleted(
1247                           final CompletedOperationContext opContext,
1248                           final ModifyDNRequest request,
1249                           final ModifyDNResult result,
1250                           final AssuredReplicationResult assuranceResult)
1251  {
1252    // No log message will be generated by default.
1253    return null;
1254  }
1255
1256
1257
1258  /**
1259   * Logs a message about a search request received from a client.
1260   *
1261   * @param  opContext  The operation context for the search operation.
1262   * @param  request    The search request that was received.
1263   *
1264   * @return  The content of the log message that should be written.  It may be
1265   *          {@code null} or empty if no message should be written.  It may
1266   *          optionally include line breaks if the log message should span
1267   *          multiple lines.
1268   */
1269  public CharSequence logSearchRequest(final OperationContext opContext,
1270                                       final SearchRequest request)
1271  {
1272    // No log message will be generated by default.
1273    return null;
1274  }
1275
1276
1277
1278  /**
1279   * Logs a message about a search request that will be forwarded to another
1280   * server.
1281   *
1282   * @param  opContext  The operation context for the search operation.
1283   * @param  request    The search request that was received.
1284   * @param  target     Information about the server to which the request will
1285   *                    be forwarded.
1286   *
1287   * @return  The content of the log message that should be written.  It may be
1288   *          {@code null} or empty if no message should be written.  It may
1289   *          optionally include line breaks if the log message should span
1290   *          multiple lines.
1291   */
1292  public CharSequence logSearchForward(final OperationContext opContext,
1293                                       final SearchRequest request,
1294                                       final ForwardTarget target)
1295  {
1296    // No log message will be generated by default.
1297    return null;
1298  }
1299
1300
1301
1302  /**
1303   * Logs a message about a failure encountered while attempting to forward a
1304   * search request to another server.
1305   *
1306   * @param  opContext  The operation context for the search operation.
1307   * @param  request    The search request that was received.
1308   * @param  target     Information about the server to which the request was
1309   *                    forwarded.
1310   * @param  failure    The exception that was received when attempting to
1311   *                    forward the request.
1312   *
1313   * @return  The content of the log message that should be written.  It may be
1314   *          {@code null} or empty if no message should be written.  It may
1315   *          optionally include line breaks if the log message should span
1316   *          multiple lines.
1317   */
1318  public CharSequence logSearchForwardFailure(final OperationContext opContext,
1319                                              final SearchRequest request,
1320                                              final ForwardTarget target,
1321                                              final LDAPException failure)
1322  {
1323    // No log message will be generated by default.
1324    return null;
1325  }
1326
1327
1328
1329  /**
1330   * Logs a message about a search result entry that was returned to the client.
1331   *
1332   * @param  opContext  The operation context for the search operation.
1333   * @param  request    The search request that was received.
1334   * @param  entry      The entry that was returned.
1335   * @param  controls   The set of controls included with the entry, or an empty
1336   *                    list if there were none.
1337   *
1338   * @return  The content of the log message that should be written.  It may be
1339   *          {@code null} or empty if no message should be written.  It may
1340   *          optionally include line breaks if the log message should span
1341   *          multiple lines.
1342   */
1343  public CharSequence logSearchResultEntry(final OperationContext opContext,
1344                                           final SearchRequest request,
1345                                           final Entry entry,
1346                                           final List<Control> controls)
1347  {
1348    // No log message will be generated by default.
1349    return null;
1350  }
1351
1352
1353
1354  /**
1355   * Logs a message about a search result reference that was returned to the
1356   * client.
1357   *
1358   * @param  opContext     The operation context for the search operation.
1359   * @param  request       The search request that was received.
1360   * @param  referralURLs  The referral URLs for the reference that was
1361   *                       returned.
1362   * @param  controls      The set of controls included with the reference, or
1363   *                       an empty list if there were none.
1364   *
1365   * @return  The content of the log message that should be written.  It may be
1366   *          {@code null} or empty if no message should be written.  It may
1367   *          optionally include line breaks if the log message should span
1368   *          multiple lines.
1369   */
1370  public CharSequence logSearchResultReference(final OperationContext opContext,
1371                                               final SearchRequest request,
1372                                               final List<String> referralURLs,
1373                                               final List<Control> controls)
1374  {
1375    // No log message will be generated by default.
1376    return null;
1377  }
1378
1379
1380
1381  /**
1382   * Logs a message about the result of processing a search request.
1383   *
1384   * @param  opContext  The operation context for the search operation.
1385   * @param  request    The search request that was received.
1386   * @param  result     The result of processing the search request.
1387   *
1388   * @return  The content of the log message that should be written.  It may be
1389   *          {@code null} or empty if no message should be written.  It may
1390   *          optionally include line breaks if the log message should span
1391   *          multiple lines.
1392   */
1393  public CharSequence logSearchResultDone(
1394                           final CompletedSearchOperationContext opContext,
1395                           final SearchRequest request,
1396                           final SearchResult result)
1397  {
1398    // No log message will be generated by default.
1399    return null;
1400  }
1401
1402
1403
1404  /**
1405   * Logs a message about an unbind request received from a client.
1406   *
1407   * @param  opContext  The operation context for the unbind operation.
1408   * @param  request    The unbind request that was received.
1409   *
1410   * @return  The content of the log message that should be written.  It may be
1411   *          {@code null} or empty if no message should be written.  It may
1412   *          optionally include line breaks if the log message should span
1413   *          multiple lines.
1414   */
1415  public CharSequence logUnbindRequest(final OperationContext opContext,
1416                                       final UnbindRequest request)
1417  {
1418    // No log message will be generated by default.
1419    return null;
1420  }
1421
1422
1423
1424  /**
1425   * Logs a message about an intermediate response that was returned to the
1426   * client.
1427   *
1428   * @param  opContext             The operation context for the associated
1429   *                               operation.
1430   * @param  intermediateResponse  The intermediate response that was returned.
1431   *
1432   * @return  The content of the log message that should be written.  It may be
1433   *          {@code null} or empty if no message should be written.  It may
1434   *          optionally include line breaks if the log message should span
1435   *          multiple lines.
1436   */
1437  public CharSequence logIntermediateResponse(final OperationContext opContext,
1438                           final IntermediateResponse intermediateResponse)
1439  {
1440    // No log message will be generated by default.
1441    return null;
1442  }
1443
1444
1445
1446  /**
1447   * Writes a message to the access logger to indicate that the Directory Proxy
1448   * Server will attempt to perform entry rebalancing by migrating a subtree
1449   * from one backend set to another.
1450   *
1451   * @param  rebalancingOperationID  The unique ID assigned to the entry
1452   *                                 balancing operation.
1453   * @param  triggerOperation        The operation that triggered the entry
1454   *                                 rebalancing.  It may be {@code null} if the
1455   *                                 rebalancing operation wasn't triggered by a
1456   *                                 client request.
1457   * @param  baseDN                  The base DN of the subtree to migrate.
1458   * @param  sizeLimit               The maximum number of entries to migrate.
1459   * @param  sourceBackendSetName    The name of the backend set containing the
1460   *                                 subtree to migrate.
1461   * @param  sourceAddress           The address of the server from which the
1462   *                                 source entries will be read.
1463   * @param  sourcePort              The port of the server from which the
1464   *                                 source entries will be read.
1465   * @param  targetBackendSetName    The name of the backend set to which the
1466   *                                 subtree will be migrated.
1467   * @param  targetAddress           The address of the server to which the
1468   *                                 subtree will be migrated.
1469   * @param  targetPort              The port of the server to which the subtree
1470   *                                 will be migrated.
1471   *
1472   * @return  The content of the log message that should be written.  It may be
1473   *          {@code null} or empty if no message should be written.  It may
1474   *          optionally include line breaks if the log message should span
1475   *          multiple lines.
1476   */
1477  public CharSequence logEntryRebalancingRequest(
1478                           final long rebalancingOperationID,
1479                           final OperationContext triggerOperation,
1480                           final String baseDN, final int sizeLimit,
1481                           final String sourceBackendSetName,
1482                           final String sourceAddress, final int sourcePort,
1483                           final String targetBackendSetName,
1484                           final String targetAddress, final int targetPort)
1485  {
1486    // No log message will be generated by default.
1487    return null;
1488  }
1489
1490
1491
1492  /**
1493   * Writes a message to the access logger to indicate that the Directory Proxy
1494   * Server will attempt to perform entry rebalancing by migrating a subtree
1495   * from one backend set to another.
1496   *
1497   * @param  rebalancingOperationID  The unique ID assigned to the entry
1498   *                                 balancing operation.
1499   * @param  triggerOperation        The operation that triggered the entry
1500   *                                 rebalancing.  It may be {@code null} if the
1501   *                                 rebalancing operation wasn't triggered by a
1502   *                                 client request.
1503   * @param  baseDN                  The base DN of the subtree to migrate.
1504   * @param  sizeLimit               The maximum number of entries to migrate.
1505   * @param  sourceBackendSetName    The name of the backend set containing the
1506   *                                 subtree to migrate.
1507   * @param  sourceAddress           The address of the server from which the
1508   *                                 source entries will be read.
1509   * @param  sourcePort              The port of the server from which the
1510   *                                 source entries will be read.
1511   * @param  targetBackendSetName    The name of the backend set to which the
1512   *                                 subtree will be migrated.
1513   * @param  targetAddress           The address of the server to which the
1514   *                                 subtree will be migrated.
1515   * @param  targetPort              The port of the server to which the subtree
1516   *                                 will be migrated.
1517   * @param  moveSubtreeResult       An object with information about the result
1518   *                                 of the subtree move processing.
1519   *
1520   * @return  The content of the log message that should be written.  It may be
1521   *          {@code null} or empty if no message should be written.  It may
1522   *          optionally include line breaks if the log message should span
1523   *          multiple lines.
1524   */
1525  public CharSequence logEntryRebalancingResult(
1526                           final long rebalancingOperationID,
1527                           final OperationContext triggerOperation,
1528                           final String baseDN, final int sizeLimit,
1529                           final String sourceBackendSetName,
1530                           final String sourceAddress, final int sourcePort,
1531                           final String targetBackendSetName,
1532                           final String targetAddress, final int targetPort,
1533                           final MoveSubtreeResult moveSubtreeResult)
1534  {
1535    // No log message will be generated by default.
1536    return null;
1537  }
1538}