001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.activemq.advisory;
018
019 import java.util.Iterator;
020 import java.util.Map;
021 import java.util.Set;
022 import java.util.concurrent.ConcurrentHashMap;
023 import org.apache.activemq.broker.Broker;
024 import org.apache.activemq.broker.BrokerFilter;
025 import org.apache.activemq.broker.ConnectionContext;
026 import org.apache.activemq.broker.ProducerBrokerExchange;
027 import org.apache.activemq.broker.region.Destination;
028 import org.apache.activemq.broker.region.MessageReference;
029 import org.apache.activemq.broker.region.Subscription;
030 import org.apache.activemq.broker.region.TopicSubscription;
031 import org.apache.activemq.command.*;
032 import org.apache.activemq.security.SecurityContext;
033 import org.apache.activemq.state.ProducerState;
034 import org.apache.activemq.usage.Usage;
035 import org.apache.activemq.util.IdGenerator;
036 import org.apache.activemq.util.LongSequenceGenerator;
037 import org.slf4j.Logger;
038 import org.slf4j.LoggerFactory;
039
040 /**
041 * This broker filter handles tracking the state of the broker for purposes of
042 * publishing advisory messages to advisory consumers.
043 *
044 *
045 */
046 public class AdvisoryBroker extends BrokerFilter {
047
048 private static final Logger LOG = LoggerFactory.getLogger(AdvisoryBroker.class);
049 private static final IdGenerator ID_GENERATOR = new IdGenerator();
050
051 protected final ConcurrentHashMap<ConnectionId, ConnectionInfo> connections = new ConcurrentHashMap<ConnectionId, ConnectionInfo>();
052 protected final ConcurrentHashMap<ConsumerId, ConsumerInfo> consumers = new ConcurrentHashMap<ConsumerId, ConsumerInfo>();
053 protected final ConcurrentHashMap<ProducerId, ProducerInfo> producers = new ConcurrentHashMap<ProducerId, ProducerInfo>();
054 protected final ConcurrentHashMap<ActiveMQDestination, DestinationInfo> destinations = new ConcurrentHashMap<ActiveMQDestination, DestinationInfo>();
055 protected final ProducerId advisoryProducerId = new ProducerId();
056
057 private final LongSequenceGenerator messageIdGenerator = new LongSequenceGenerator();
058
059 public AdvisoryBroker(Broker next) {
060 super(next);
061 advisoryProducerId.setConnectionId(ID_GENERATOR.generateId());
062 }
063
064 @Override
065 public void addConnection(ConnectionContext context, ConnectionInfo info) throws Exception {
066 super.addConnection(context, info);
067
068 ActiveMQTopic topic = AdvisorySupport.getConnectionAdvisoryTopic();
069 //do not distribute usernames or passwords in advisory
070 ConnectionInfo copy = info.copy();
071 copy.setUserName("");
072 copy.setPassword("");
073 fireAdvisory(context, topic, copy);
074 connections.put(copy.getConnectionId(), copy);
075 }
076
077 @Override
078 public Subscription addConsumer(ConnectionContext context, ConsumerInfo info) throws Exception {
079 Subscription answer = super.addConsumer(context, info);
080
081 // Don't advise advisory topics.
082 if (!AdvisorySupport.isAdvisoryTopic(info.getDestination())) {
083 ActiveMQTopic topic = AdvisorySupport.getConsumerAdvisoryTopic(info.getDestination());
084 consumers.put(info.getConsumerId(), info);
085 fireConsumerAdvisory(context, info.getDestination(), topic, info);
086 } else {
087 // We need to replay all the previously collected state objects
088 // for this newly added consumer.
089 if (AdvisorySupport.isConnectionAdvisoryTopic(info.getDestination())) {
090 // Replay the connections.
091 for (Iterator<ConnectionInfo> iter = connections.values().iterator(); iter.hasNext();) {
092 ConnectionInfo value = iter.next();
093 ActiveMQTopic topic = AdvisorySupport.getConnectionAdvisoryTopic();
094 fireAdvisory(context, topic, value, info.getConsumerId());
095 }
096 }
097
098 // We need to replay all the previously collected destination
099 // objects
100 // for this newly added consumer.
101 if (AdvisorySupport.isDestinationAdvisoryTopic(info.getDestination())) {
102 // Replay the destinations.
103 for (Iterator<DestinationInfo> iter = destinations.values().iterator(); iter.hasNext();) {
104 DestinationInfo value = iter.next();
105 ActiveMQTopic topic = AdvisorySupport.getDestinationAdvisoryTopic(value.getDestination());
106 fireAdvisory(context, topic, value, info.getConsumerId());
107 }
108 }
109
110 // Replay the producers.
111 if (AdvisorySupport.isProducerAdvisoryTopic(info.getDestination())) {
112 for (Iterator<ProducerInfo> iter = producers.values().iterator(); iter.hasNext();) {
113 ProducerInfo value = iter.next();
114 ActiveMQTopic topic = AdvisorySupport.getProducerAdvisoryTopic(value.getDestination());
115 fireProducerAdvisory(context, value.getDestination(),topic, value, info.getConsumerId());
116 }
117 }
118
119 // Replay the consumers.
120 if (AdvisorySupport.isConsumerAdvisoryTopic(info.getDestination())) {
121 for (Iterator<ConsumerInfo> iter = consumers.values().iterator(); iter.hasNext();) {
122 ConsumerInfo value = iter.next();
123 ActiveMQTopic topic = AdvisorySupport.getConsumerAdvisoryTopic(value.getDestination());
124 fireConsumerAdvisory(context,value.getDestination(), topic, value, info.getConsumerId());
125 }
126 }
127 }
128 return answer;
129 }
130
131 @Override
132 public void addProducer(ConnectionContext context, ProducerInfo info) throws Exception {
133 super.addProducer(context, info);
134
135 // Don't advise advisory topics.
136 if (info.getDestination() != null && !AdvisorySupport.isAdvisoryTopic(info.getDestination())) {
137 ActiveMQTopic topic = AdvisorySupport.getProducerAdvisoryTopic(info.getDestination());
138 fireProducerAdvisory(context, info.getDestination(), topic, info);
139 producers.put(info.getProducerId(), info);
140 }
141 }
142
143 @Override
144 public Destination addDestination(ConnectionContext context, ActiveMQDestination destination,boolean create) throws Exception {
145 Destination answer = super.addDestination(context, destination,create);
146 if (!AdvisorySupport.isAdvisoryTopic(destination)) {
147 DestinationInfo info = new DestinationInfo(context.getConnectionId(), DestinationInfo.ADD_OPERATION_TYPE, destination);
148 DestinationInfo previous = destinations.putIfAbsent(destination, info);
149 if( previous==null ) {
150 ActiveMQTopic topic = AdvisorySupport.getDestinationAdvisoryTopic(destination);
151 fireAdvisory(context, topic, info);
152 }
153 }
154 return answer;
155 }
156
157 @Override
158 public void addDestinationInfo(ConnectionContext context, DestinationInfo info) throws Exception {
159 ActiveMQDestination destination = info.getDestination();
160 next.addDestinationInfo(context, info);
161
162 if (!AdvisorySupport.isAdvisoryTopic(destination)) {
163 DestinationInfo previous = destinations.putIfAbsent(destination, info);
164 if( previous==null ) {
165 ActiveMQTopic topic = AdvisorySupport.getDestinationAdvisoryTopic(destination);
166 fireAdvisory(context, topic, info);
167 }
168 }
169 }
170
171 @Override
172 public void removeDestination(ConnectionContext context, ActiveMQDestination destination, long timeout) throws Exception {
173 super.removeDestination(context, destination, timeout);
174 DestinationInfo info = destinations.remove(destination);
175 if (info != null) {
176 info.setDestination(destination);
177 info.setOperationType(DestinationInfo.REMOVE_OPERATION_TYPE);
178 ActiveMQTopic topic = AdvisorySupport.getDestinationAdvisoryTopic(destination);
179 fireAdvisory(context, topic, info);
180 try {
181 next.removeDestination(context, AdvisorySupport.getConsumerAdvisoryTopic(info.getDestination()), -1);
182 } catch (Exception expectedIfDestinationDidNotExistYet) {
183 }
184 try {
185 next.removeDestination(context, AdvisorySupport.getProducerAdvisoryTopic(info.getDestination()), -1);
186 } catch (Exception expectedIfDestinationDidNotExistYet) {
187 }
188 }
189
190 }
191
192 @Override
193 public void removeDestinationInfo(ConnectionContext context, DestinationInfo destInfo) throws Exception {
194 super.removeDestinationInfo(context, destInfo);
195 DestinationInfo info = destinations.remove(destInfo.getDestination());
196 if (info != null) {
197 info.setDestination(destInfo.getDestination());
198 info.setOperationType(DestinationInfo.REMOVE_OPERATION_TYPE);
199 ActiveMQTopic topic = AdvisorySupport.getDestinationAdvisoryTopic(destInfo.getDestination());
200 fireAdvisory(context, topic, info);
201 try {
202 next.removeDestination(context, AdvisorySupport.getConsumerAdvisoryTopic(info.getDestination()), -1);
203 } catch (Exception expectedIfDestinationDidNotExistYet) {
204 }
205 try {
206 next.removeDestination(context, AdvisorySupport.getProducerAdvisoryTopic(info.getDestination()), -1);
207
208 } catch (Exception expectedIfDestinationDidNotExistYet) {
209 }
210 }
211
212 }
213
214 @Override
215 public void removeConnection(ConnectionContext context, ConnectionInfo info, Throwable error) throws Exception {
216 super.removeConnection(context, info, error);
217
218 ActiveMQTopic topic = AdvisorySupport.getConnectionAdvisoryTopic();
219 fireAdvisory(context, topic, info.createRemoveCommand());
220 connections.remove(info.getConnectionId());
221 }
222
223 @Override
224 public void removeConsumer(ConnectionContext context, ConsumerInfo info) throws Exception {
225 super.removeConsumer(context, info);
226
227 // Don't advise advisory topics.
228 ActiveMQDestination dest = info.getDestination();
229 if (!AdvisorySupport.isAdvisoryTopic(dest)) {
230 ActiveMQTopic topic = AdvisorySupport.getConsumerAdvisoryTopic(dest);
231 consumers.remove(info.getConsumerId());
232 if (!dest.isTemporary() || destinations.containsKey(dest)) {
233 fireConsumerAdvisory(context,dest, topic, info.createRemoveCommand());
234 }
235 }
236 }
237
238 @Override
239 public void removeProducer(ConnectionContext context, ProducerInfo info) throws Exception {
240 super.removeProducer(context, info);
241
242 // Don't advise advisory topics.
243 ActiveMQDestination dest = info.getDestination();
244 if (info.getDestination() != null && !AdvisorySupport.isAdvisoryTopic(dest)) {
245 ActiveMQTopic topic = AdvisorySupport.getProducerAdvisoryTopic(dest);
246 producers.remove(info.getProducerId());
247 if (!dest.isTemporary() || destinations.contains(dest)) {
248 fireProducerAdvisory(context, dest,topic, info.createRemoveCommand());
249 }
250 }
251 }
252
253 @Override
254 public void messageExpired(ConnectionContext context, MessageReference messageReference, Subscription subscription) {
255 super.messageExpired(context, messageReference, subscription);
256 try {
257 if(!messageReference.isAdvisory()) {
258 ActiveMQTopic topic = AdvisorySupport.getExpiredMessageTopic(messageReference.getMessage().getDestination());
259 Message payload = messageReference.getMessage().copy();
260 payload.clearBody();
261 ActiveMQMessage advisoryMessage = new ActiveMQMessage();
262 advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_MESSAGE_ID, payload.getMessageId().toString());
263 fireAdvisory(context, topic, payload, null, advisoryMessage);
264 }
265 } catch (Exception e) {
266 handleFireFailure("expired", e);
267 }
268 }
269
270 @Override
271 public void messageConsumed(ConnectionContext context, MessageReference messageReference) {
272 super.messageConsumed(context, messageReference);
273 try {
274 if(!messageReference.isAdvisory()) {
275 ActiveMQTopic topic = AdvisorySupport.getMessageConsumedAdvisoryTopic(messageReference.getMessage().getDestination());
276 Message payload = messageReference.getMessage().copy();
277 payload.clearBody();
278 fireAdvisory(context, topic,payload);
279 }
280 } catch (Exception e) {
281 handleFireFailure("consumed", e);
282 }
283 }
284
285 @Override
286 public void messageDelivered(ConnectionContext context, MessageReference messageReference) {
287 super.messageDelivered(context, messageReference);
288 try {
289 if (!messageReference.isAdvisory()) {
290 ActiveMQTopic topic = AdvisorySupport.getMessageDeliveredAdvisoryTopic(messageReference.getMessage().getDestination());
291 Message payload = messageReference.getMessage().copy();
292 payload.clearBody();
293 fireAdvisory(context, topic,payload);
294 }
295 } catch (Exception e) {
296 handleFireFailure("delivered", e);
297 }
298 }
299
300 @Override
301 public void messageDiscarded(ConnectionContext context, Subscription sub, MessageReference messageReference) {
302 super.messageDiscarded(context, sub, messageReference);
303 try {
304 if (!messageReference.isAdvisory()) {
305 ActiveMQTopic topic = AdvisorySupport.getMessageDiscardedAdvisoryTopic(messageReference.getMessage().getDestination());
306 Message payload = messageReference.getMessage().copy();
307 payload.clearBody();
308 ActiveMQMessage advisoryMessage = new ActiveMQMessage();
309 if (sub instanceof TopicSubscription) {
310 advisoryMessage.setIntProperty(AdvisorySupport.MSG_PROPERTY_DISCARDED_COUNT, ((TopicSubscription)sub).discarded());
311 }
312 advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_CONSUMER_ID, sub.getConsumerInfo().getConsumerId().toString());
313 fireAdvisory(context, topic, payload, null, advisoryMessage);
314 }
315 } catch (Exception e) {
316 handleFireFailure("discarded", e);
317 }
318 }
319
320 @Override
321 public void slowConsumer(ConnectionContext context, Destination destination,Subscription subs) {
322 super.slowConsumer(context, destination,subs);
323 try {
324 ActiveMQTopic topic = AdvisorySupport.getSlowConsumerAdvisoryTopic(destination.getActiveMQDestination());
325 ActiveMQMessage advisoryMessage = new ActiveMQMessage();
326 advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_CONSUMER_ID, subs.getConsumerInfo().getConsumerId().toString());
327 fireAdvisory(context, topic, subs.getConsumerInfo(), null, advisoryMessage);
328 } catch (Exception e) {
329 handleFireFailure("slow consumer", e);
330 }
331 }
332
333 @Override
334 public void fastProducer(ConnectionContext context,ProducerInfo producerInfo) {
335 super.fastProducer(context, producerInfo);
336 try {
337 ActiveMQTopic topic = AdvisorySupport.getFastProducerAdvisoryTopic(producerInfo.getDestination());
338 ActiveMQMessage advisoryMessage = new ActiveMQMessage();
339 advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_PRODUCER_ID, producerInfo.getProducerId().toString());
340 fireAdvisory(context, topic, producerInfo, null, advisoryMessage);
341 } catch (Exception e) {
342 handleFireFailure("fast producer", e);
343 }
344 }
345
346 @Override
347 public void isFull(ConnectionContext context, Destination destination, Usage usage) {
348 super.isFull(context, destination, usage);
349 if (AdvisorySupport.isAdvisoryTopic(destination.getActiveMQDestination()) == false) {
350 try {
351
352 ActiveMQTopic topic = AdvisorySupport.getFullAdvisoryTopic(destination.getActiveMQDestination());
353 ActiveMQMessage advisoryMessage = new ActiveMQMessage();
354 advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_USAGE_NAME, usage.getName());
355 fireAdvisory(context, topic, null, null, advisoryMessage);
356
357 } catch (Exception e) {
358 handleFireFailure("is full", e);
359 }
360 }
361 }
362
363 @Override
364 public void nowMasterBroker() {
365 super.nowMasterBroker();
366 try {
367 ActiveMQTopic topic = AdvisorySupport.getMasterBrokerAdvisoryTopic();
368 ActiveMQMessage advisoryMessage = new ActiveMQMessage();
369 ConnectionContext context = new ConnectionContext();
370 context.setSecurityContext(SecurityContext.BROKER_SECURITY_CONTEXT);
371 context.setBroker(getBrokerService().getBroker());
372 fireAdvisory(context, topic,null,null,advisoryMessage);
373 } catch (Exception e) {
374 handleFireFailure("now master broker", e);
375 }
376 }
377
378 @Override
379 public void sendToDeadLetterQueue(ConnectionContext context, MessageReference messageReference,
380 Subscription subscription){
381 super.sendToDeadLetterQueue(context, messageReference, subscription);
382 try {
383 if(!messageReference.isAdvisory()) {
384 ActiveMQTopic topic = AdvisorySupport.getMessageDLQdAdvisoryTopic(messageReference.getMessage().getDestination());
385 Message payload = messageReference.getMessage().copy();
386 payload.clearBody();
387 fireAdvisory(context, topic,payload);
388 }
389 } catch (Exception e) {
390 handleFireFailure("add to DLQ", e);
391 }
392 }
393
394 @Override
395 public void networkBridgeStarted(BrokerInfo brokerInfo, boolean createdByDuplex) {
396 try {
397 if (brokerInfo != null) {
398 ActiveMQMessage advisoryMessage = new ActiveMQMessage();
399 advisoryMessage.setBooleanProperty("started", true);
400 advisoryMessage.setBooleanProperty("createdByDuplex", createdByDuplex);
401
402 ActiveMQTopic topic = AdvisorySupport.getNetworkBridgeAdvisoryTopic();
403
404 ConnectionContext context = new ConnectionContext();
405 context.setSecurityContext(SecurityContext.BROKER_SECURITY_CONTEXT);
406 context.setBroker(getBrokerService().getBroker());
407 fireAdvisory(context, topic, brokerInfo, null, advisoryMessage);
408 }
409 } catch (Exception e) {
410 handleFireFailure("network bridge started", e);
411 }
412 }
413
414 @Override
415 public void networkBridgeStopped(BrokerInfo brokerInfo) {
416 try {
417 if (brokerInfo != null) {
418 ActiveMQMessage advisoryMessage = new ActiveMQMessage();
419 advisoryMessage.setBooleanProperty("started", false);
420
421 ActiveMQTopic topic = AdvisorySupport.getNetworkBridgeAdvisoryTopic();
422
423 ConnectionContext context = new ConnectionContext();
424 context.setSecurityContext(SecurityContext.BROKER_SECURITY_CONTEXT);
425 context.setBroker(getBrokerService().getBroker());
426 fireAdvisory(context, topic, brokerInfo, null, advisoryMessage);
427 }
428 } catch (Exception e) {
429 handleFireFailure("network bridge stopped", e);
430 }
431 }
432
433 private void handleFireFailure(String message, Throwable cause) {
434 LOG.warn("Failed to fire " + message + " advisory, reason: " + cause);
435 if (LOG.isDebugEnabled()) {
436 LOG.debug(message + " detail", cause);
437 }
438 }
439
440 protected void fireAdvisory(ConnectionContext context, ActiveMQTopic topic, Command command) throws Exception {
441 fireAdvisory(context, topic, command, null);
442 }
443
444 protected void fireAdvisory(ConnectionContext context, ActiveMQTopic topic, Command command, ConsumerId targetConsumerId) throws Exception {
445 ActiveMQMessage advisoryMessage = new ActiveMQMessage();
446 fireAdvisory(context, topic, command, targetConsumerId, advisoryMessage);
447 }
448
449 protected void fireConsumerAdvisory(ConnectionContext context, ActiveMQDestination consumerDestination,ActiveMQTopic topic, Command command) throws Exception {
450 fireConsumerAdvisory(context, consumerDestination,topic, command, null);
451 }
452
453 protected void fireConsumerAdvisory(ConnectionContext context, ActiveMQDestination consumerDestination,ActiveMQTopic topic, Command command, ConsumerId targetConsumerId) throws Exception {
454 ActiveMQMessage advisoryMessage = new ActiveMQMessage();
455 int count = 0;
456 Set<Destination>set = getDestinations(consumerDestination);
457 if (set != null) {
458 for (Destination dest:set) {
459 count += dest.getDestinationStatistics().getConsumers().getCount();
460 }
461 }
462 advisoryMessage.setIntProperty(AdvisorySupport.MSG_PROPERTY_CONSUMER_COUNT, count);
463
464 fireAdvisory(context, topic, command, targetConsumerId, advisoryMessage);
465 }
466
467 protected void fireProducerAdvisory(ConnectionContext context,ActiveMQDestination producerDestination, ActiveMQTopic topic, Command command) throws Exception {
468 fireProducerAdvisory(context,producerDestination, topic, command, null);
469 }
470
471 protected void fireProducerAdvisory(ConnectionContext context, ActiveMQDestination producerDestination,ActiveMQTopic topic, Command command, ConsumerId targetConsumerId) throws Exception {
472 ActiveMQMessage advisoryMessage = new ActiveMQMessage();
473 int count = 0;
474 if (producerDestination != null) {
475 Set<Destination> set = getDestinations(producerDestination);
476 if (set != null) {
477 for (Destination dest : set) {
478 count += dest.getDestinationStatistics().getProducers().getCount();
479 }
480 }
481 }
482 advisoryMessage.setIntProperty("producerCount", count);
483 fireAdvisory(context, topic, command, targetConsumerId, advisoryMessage);
484 }
485
486 protected void fireAdvisory(ConnectionContext context, ActiveMQTopic topic, Command command, ConsumerId targetConsumerId, ActiveMQMessage advisoryMessage) throws Exception {
487 if (getBrokerService().isStarted()) {
488 //set properties
489 advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_ORIGIN_BROKER_NAME, getBrokerName());
490 String id = getBrokerId() != null ? getBrokerId().getValue() : "NOT_SET";
491 advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_ORIGIN_BROKER_ID, id);
492
493 String url = getBrokerService().getVmConnectorURI().toString();
494 if (getBrokerService().getDefaultSocketURIString() != null) {
495 url = getBrokerService().getDefaultSocketURIString();
496 }
497 advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_ORIGIN_BROKER_URL, url);
498
499 //set the data structure
500 advisoryMessage.setDataStructure(command);
501 advisoryMessage.setPersistent(false);
502 advisoryMessage.setType(AdvisorySupport.ADIVSORY_MESSAGE_TYPE);
503 advisoryMessage.setMessageId(new MessageId(advisoryProducerId, messageIdGenerator.getNextSequenceId()));
504 advisoryMessage.setTargetConsumerId(targetConsumerId);
505 advisoryMessage.setDestination(topic);
506 advisoryMessage.setResponseRequired(false);
507 advisoryMessage.setProducerId(advisoryProducerId);
508 boolean originalFlowControl = context.isProducerFlowControl();
509 final ProducerBrokerExchange producerExchange = new ProducerBrokerExchange();
510 producerExchange.setConnectionContext(context);
511 producerExchange.setMutable(true);
512 producerExchange.setProducerState(new ProducerState(new ProducerInfo()));
513 try {
514 context.setProducerFlowControl(false);
515 next.send(producerExchange, advisoryMessage);
516 } finally {
517 context.setProducerFlowControl(originalFlowControl);
518 }
519 }
520 }
521
522 public Map<ConnectionId, ConnectionInfo> getAdvisoryConnections() {
523 return connections;
524 }
525
526 public Map<ConsumerId, ConsumerInfo> getAdvisoryConsumers() {
527 return consumers;
528 }
529
530 public Map<ProducerId, ProducerInfo> getAdvisoryProducers() {
531 return producers;
532 }
533
534 public Map<ActiveMQDestination, DestinationInfo> getAdvisoryDestinations() {
535 return destinations;
536 }
537 }