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 */
017package org.apache.activemq.advisory;
018
019import java.util.ArrayList;
020import java.util.Collection;
021import java.util.Iterator;
022import java.util.LinkedHashMap;
023import java.util.Map;
024import java.util.Set;
025import java.util.concurrent.ConcurrentHashMap;
026import java.util.concurrent.locks.ReentrantReadWriteLock;
027
028import org.apache.activemq.broker.Broker;
029import org.apache.activemq.broker.BrokerFilter;
030import org.apache.activemq.broker.BrokerService;
031import org.apache.activemq.broker.ConnectionContext;
032import org.apache.activemq.broker.ProducerBrokerExchange;
033import org.apache.activemq.broker.region.Destination;
034import org.apache.activemq.broker.region.DurableTopicSubscription;
035import org.apache.activemq.broker.region.MessageReference;
036import org.apache.activemq.broker.region.RegionBroker;
037import org.apache.activemq.broker.region.Subscription;
038import org.apache.activemq.broker.region.TopicRegion;
039import org.apache.activemq.broker.region.TopicSubscription;
040import org.apache.activemq.command.ActiveMQDestination;
041import org.apache.activemq.command.ActiveMQMessage;
042import org.apache.activemq.command.ActiveMQTopic;
043import org.apache.activemq.command.BrokerInfo;
044import org.apache.activemq.command.Command;
045import org.apache.activemq.command.ConnectionId;
046import org.apache.activemq.command.ConnectionInfo;
047import org.apache.activemq.command.ConsumerId;
048import org.apache.activemq.command.ConsumerInfo;
049import org.apache.activemq.command.DestinationInfo;
050import org.apache.activemq.command.Message;
051import org.apache.activemq.command.MessageId;
052import org.apache.activemq.command.ProducerId;
053import org.apache.activemq.command.ProducerInfo;
054import org.apache.activemq.command.RemoveSubscriptionInfo;
055import org.apache.activemq.security.SecurityContext;
056import org.apache.activemq.state.ProducerState;
057import org.apache.activemq.usage.Usage;
058import org.apache.activemq.util.IdGenerator;
059import org.apache.activemq.util.LongSequenceGenerator;
060import org.apache.activemq.util.SubscriptionKey;
061import org.slf4j.Logger;
062import org.slf4j.LoggerFactory;
063
064/**
065 * This broker filter handles tracking the state of the broker for purposes of
066 * publishing advisory messages to advisory consumers.
067 */
068public class AdvisoryBroker extends BrokerFilter {
069
070    private static final Logger LOG = LoggerFactory.getLogger(AdvisoryBroker.class);
071    private static final IdGenerator ID_GENERATOR = new IdGenerator();
072
073    protected final ConcurrentHashMap<ConnectionId, ConnectionInfo> connections = new ConcurrentHashMap<ConnectionId, ConnectionInfo>();
074
075    private final ReentrantReadWriteLock consumersLock = new ReentrantReadWriteLock();
076    protected final Map<ConsumerId, ConsumerInfo> consumers = new LinkedHashMap<ConsumerId, ConsumerInfo>();
077
078    protected final ConcurrentHashMap<ProducerId, ProducerInfo> producers = new ConcurrentHashMap<ProducerId, ProducerInfo>();
079    protected final ConcurrentHashMap<ActiveMQDestination, DestinationInfo> destinations = new ConcurrentHashMap<ActiveMQDestination, DestinationInfo>();
080    protected final ConcurrentHashMap<BrokerInfo, ActiveMQMessage> networkBridges = new ConcurrentHashMap<BrokerInfo, ActiveMQMessage>();
081    protected final ProducerId advisoryProducerId = new ProducerId();
082
083    private final LongSequenceGenerator messageIdGenerator = new LongSequenceGenerator();
084
085    public AdvisoryBroker(Broker next) {
086        super(next);
087        advisoryProducerId.setConnectionId(ID_GENERATOR.generateId());
088    }
089
090    @Override
091    public void addConnection(ConnectionContext context, ConnectionInfo info) throws Exception {
092        super.addConnection(context, info);
093
094        ActiveMQTopic topic = AdvisorySupport.getConnectionAdvisoryTopic();
095        // do not distribute passwords in advisory messages. usernames okay
096        ConnectionInfo copy = info.copy();
097        copy.setPassword("");
098        fireAdvisory(context, topic, copy);
099        connections.put(copy.getConnectionId(), copy);
100    }
101
102    @Override
103    public Subscription addConsumer(ConnectionContext context, ConsumerInfo info) throws Exception {
104        Subscription answer = super.addConsumer(context, info);
105
106        // Don't advise advisory topics.
107        if (!AdvisorySupport.isAdvisoryTopic(info.getDestination())) {
108            ActiveMQTopic topic = AdvisorySupport.getConsumerAdvisoryTopic(info.getDestination());
109            consumersLock.writeLock().lock();
110            try {
111                consumers.put(info.getConsumerId(), info);
112            } finally {
113                consumersLock.writeLock().unlock();
114            }
115            fireConsumerAdvisory(context, info.getDestination(), topic, info);
116        } else {
117            // We need to replay all the previously collected state objects
118            // for this newly added consumer.
119            if (AdvisorySupport.isConnectionAdvisoryTopic(info.getDestination())) {
120                // Replay the connections.
121                for (Iterator<ConnectionInfo> iter = connections.values().iterator(); iter.hasNext(); ) {
122                    ConnectionInfo value = iter.next();
123                    ActiveMQTopic topic = AdvisorySupport.getConnectionAdvisoryTopic();
124                    fireAdvisory(context, topic, value, info.getConsumerId());
125                }
126            }
127
128            // We check here whether the Destination is Temporary Destination specific or not since we
129            // can avoid sending advisory messages to the consumer if it only wants Temporary Destination
130            // notifications.  If its not just temporary destination related destinations then we have
131            // to send them all, a composite destination could want both.
132            if (AdvisorySupport.isTempDestinationAdvisoryTopic(info.getDestination())) {
133                // Replay the temporary destinations.
134                for (DestinationInfo destination : destinations.values()) {
135                    if (destination.getDestination().isTemporary()) {
136                        ActiveMQTopic topic = AdvisorySupport.getDestinationAdvisoryTopic(destination.getDestination());
137                        fireAdvisory(context, topic, destination, info.getConsumerId());
138                    }
139                }
140            } else if (AdvisorySupport.isDestinationAdvisoryTopic(info.getDestination())) {
141                // Replay all the destinations.
142                for (DestinationInfo destination : destinations.values()) {
143                    ActiveMQTopic topic = AdvisorySupport.getDestinationAdvisoryTopic(destination.getDestination());
144                    fireAdvisory(context, topic, destination, info.getConsumerId());
145                }
146            }
147
148            // Replay the producers.
149            if (AdvisorySupport.isProducerAdvisoryTopic(info.getDestination())) {
150                for (Iterator<ProducerInfo> iter = producers.values().iterator(); iter.hasNext(); ) {
151                    ProducerInfo value = iter.next();
152                    ActiveMQTopic topic = AdvisorySupport.getProducerAdvisoryTopic(value.getDestination());
153                    fireProducerAdvisory(context, value.getDestination(), topic, value, info.getConsumerId());
154                }
155            }
156
157            // Replay the consumers.
158            if (AdvisorySupport.isConsumerAdvisoryTopic(info.getDestination())) {
159                consumersLock.readLock().lock();
160                try {
161                    for (Iterator<ConsumerInfo> iter = consumers.values().iterator(); iter.hasNext(); ) {
162                        ConsumerInfo value = iter.next();
163                        ActiveMQTopic topic = AdvisorySupport.getConsumerAdvisoryTopic(value.getDestination());
164                        fireConsumerAdvisory(context, value.getDestination(), topic, value, info.getConsumerId());
165                    }
166                } finally {
167                    consumersLock.readLock().unlock();
168                }
169            }
170
171            // Replay network bridges
172            if (AdvisorySupport.isNetworkBridgeAdvisoryTopic(info.getDestination())) {
173                for (Iterator<BrokerInfo> iter = networkBridges.keySet().iterator(); iter.hasNext(); ) {
174                    BrokerInfo key = iter.next();
175                    ActiveMQTopic topic = AdvisorySupport.getNetworkBridgeAdvisoryTopic();
176                    fireAdvisory(context, topic, key, null, networkBridges.get(key));
177                }
178            }
179        }
180        return answer;
181    }
182
183    @Override
184    public void addProducer(ConnectionContext context, ProducerInfo info) throws Exception {
185        super.addProducer(context, info);
186
187        // Don't advise advisory topics.
188        if (info.getDestination() != null && !AdvisorySupport.isAdvisoryTopic(info.getDestination())) {
189            ActiveMQTopic topic = AdvisorySupport.getProducerAdvisoryTopic(info.getDestination());
190            fireProducerAdvisory(context, info.getDestination(), topic, info);
191            producers.put(info.getProducerId(), info);
192        }
193    }
194
195    @Override
196    public Destination addDestination(ConnectionContext context, ActiveMQDestination destination, boolean create) throws Exception {
197        Destination answer = super.addDestination(context, destination, create);
198        if (!AdvisorySupport.isAdvisoryTopic(destination)) {
199            DestinationInfo info = new DestinationInfo(context.getConnectionId(), DestinationInfo.ADD_OPERATION_TYPE, destination);
200            DestinationInfo previous = destinations.putIfAbsent(destination, info);
201            if (previous == null) {
202                ActiveMQTopic topic = AdvisorySupport.getDestinationAdvisoryTopic(destination);
203                fireAdvisory(context, topic, info);
204            }
205        }
206        return answer;
207    }
208
209    @Override
210    public void addDestinationInfo(ConnectionContext context, DestinationInfo info) throws Exception {
211        ActiveMQDestination destination = info.getDestination();
212        next.addDestinationInfo(context, info);
213
214        if (!AdvisorySupport.isAdvisoryTopic(destination)) {
215            DestinationInfo previous = destinations.putIfAbsent(destination, info);
216            if (previous == null) {
217                ActiveMQTopic topic = AdvisorySupport.getDestinationAdvisoryTopic(destination);
218                fireAdvisory(context, topic, info);
219            }
220        }
221    }
222
223    @Override
224    public void removeDestination(ConnectionContext context, ActiveMQDestination destination, long timeout) throws Exception {
225        super.removeDestination(context, destination, timeout);
226        DestinationInfo info = destinations.remove(destination);
227        if (info != null) {
228            // ensure we don't modify (and loose/overwrite) an in-flight add advisory, so duplicate
229            info = info.copy();
230            info.setDestination(destination);
231            info.setOperationType(DestinationInfo.REMOVE_OPERATION_TYPE);
232            ActiveMQTopic topic = AdvisorySupport.getDestinationAdvisoryTopic(destination);
233            fireAdvisory(context, topic, info);
234            ActiveMQTopic[] advisoryDestinations = AdvisorySupport.getAllDestinationAdvisoryTopics(destination);
235            for (ActiveMQTopic advisoryDestination : advisoryDestinations) {
236                try {
237                    next.removeDestination(context, advisoryDestination, -1);
238                } catch (Exception expectedIfDestinationDidNotExistYet) {
239                }
240            }
241        }
242    }
243
244    @Override
245    public void removeDestinationInfo(ConnectionContext context, DestinationInfo destInfo) throws Exception {
246        super.removeDestinationInfo(context, destInfo);
247        DestinationInfo info = destinations.remove(destInfo.getDestination());
248        if (info != null) {
249            // ensure we don't modify (and loose/overwrite) an in-flight add advisory, so duplicate
250            info = info.copy();
251            info.setDestination(destInfo.getDestination());
252            info.setOperationType(DestinationInfo.REMOVE_OPERATION_TYPE);
253            ActiveMQTopic topic = AdvisorySupport.getDestinationAdvisoryTopic(destInfo.getDestination());
254            fireAdvisory(context, topic, info);
255            ActiveMQTopic[] advisoryDestinations = AdvisorySupport.getAllDestinationAdvisoryTopics(destInfo.getDestination());
256            for (ActiveMQTopic advisoryDestination : advisoryDestinations) {
257                try {
258                    next.removeDestination(context, advisoryDestination, -1);
259                } catch (Exception expectedIfDestinationDidNotExistYet) {
260                }
261            }
262        }
263    }
264
265    @Override
266    public void removeConnection(ConnectionContext context, ConnectionInfo info, Throwable error) throws Exception {
267        super.removeConnection(context, info, error);
268
269        ActiveMQTopic topic = AdvisorySupport.getConnectionAdvisoryTopic();
270        fireAdvisory(context, topic, info.createRemoveCommand());
271        connections.remove(info.getConnectionId());
272    }
273
274    @Override
275    public void removeConsumer(ConnectionContext context, ConsumerInfo info) throws Exception {
276        super.removeConsumer(context, info);
277
278        // Don't advise advisory topics.
279        ActiveMQDestination dest = info.getDestination();
280        if (!AdvisorySupport.isAdvisoryTopic(dest)) {
281            ActiveMQTopic topic = AdvisorySupport.getConsumerAdvisoryTopic(dest);
282            consumersLock.writeLock().lock();
283            try {
284                consumers.remove(info.getConsumerId());
285            } finally {
286                consumersLock.writeLock().unlock();
287            }
288            if (!dest.isTemporary() || destinations.containsKey(dest)) {
289                fireConsumerAdvisory(context, dest, topic, info.createRemoveCommand());
290            }
291        }
292    }
293
294    @Override
295    public void removeSubscription(ConnectionContext context, RemoveSubscriptionInfo info) throws Exception {
296        SubscriptionKey key = new SubscriptionKey(context.getClientId(), info.getSubscriptionName());
297
298        RegionBroker regionBroker = null;
299        if (next instanceof RegionBroker) {
300            regionBroker = (RegionBroker) next;
301        } else {
302            BrokerService service = next.getBrokerService();
303            regionBroker = (RegionBroker) service.getRegionBroker();
304        }
305
306        if (regionBroker == null) {
307            LOG.warn("Cannot locate a RegionBroker instance to pass along the removeSubscription call");
308            throw new IllegalStateException("No RegionBroker found.");
309        }
310
311        DurableTopicSubscription sub = ((TopicRegion) regionBroker.getTopicRegion()).getDurableSubscription(key);
312
313        super.removeSubscription(context, info);
314
315        if (sub == null) {
316            LOG.warn("We cannot send an advisory message for a durable sub removal when we don't know about the durable sub");
317            return;
318        }
319
320        ActiveMQDestination dest = sub.getConsumerInfo().getDestination();
321
322        // Don't advise advisory topics.
323        if (!AdvisorySupport.isAdvisoryTopic(dest)) {
324            ActiveMQTopic topic = AdvisorySupport.getConsumerAdvisoryTopic(dest);
325            fireConsumerAdvisory(context, dest, topic, info);
326        }
327
328    }
329
330    @Override
331    public void removeProducer(ConnectionContext context, ProducerInfo info) throws Exception {
332        super.removeProducer(context, info);
333
334        // Don't advise advisory topics.
335        ActiveMQDestination dest = info.getDestination();
336        if (info.getDestination() != null && !AdvisorySupport.isAdvisoryTopic(dest)) {
337            ActiveMQTopic topic = AdvisorySupport.getProducerAdvisoryTopic(dest);
338            producers.remove(info.getProducerId());
339            if (!dest.isTemporary() || destinations.containsKey(dest)) {
340                fireProducerAdvisory(context, dest, topic, info.createRemoveCommand());
341            }
342        }
343    }
344
345    @Override
346    public void messageExpired(ConnectionContext context, MessageReference messageReference, Subscription subscription) {
347        super.messageExpired(context, messageReference, subscription);
348        try {
349            if (!messageReference.isAdvisory()) {
350                ActiveMQTopic topic = AdvisorySupport.getExpiredMessageTopic(messageReference.getMessage().getDestination());
351                Message payload = messageReference.getMessage().copy();
352                payload.clearBody();
353                ActiveMQMessage advisoryMessage = new ActiveMQMessage();
354                advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_MESSAGE_ID, payload.getMessageId().toString());
355                fireAdvisory(context, topic, payload, null, advisoryMessage);
356            }
357        } catch (Exception e) {
358            handleFireFailure("expired", e);
359        }
360    }
361
362    @Override
363    public void messageConsumed(ConnectionContext context, MessageReference messageReference) {
364        super.messageConsumed(context, messageReference);
365        try {
366            if (!messageReference.isAdvisory()) {
367                ActiveMQTopic topic = AdvisorySupport.getMessageConsumedAdvisoryTopic(messageReference.getMessage().getDestination());
368                Message payload = messageReference.getMessage().copy();
369                payload.clearBody();
370                ActiveMQMessage advisoryMessage = new ActiveMQMessage();
371                advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_MESSAGE_ID, payload.getMessageId().toString());
372                ActiveMQDestination destination = payload.getDestination();
373                if (destination != null) {
374                    advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_DESTINATION, payload.getMessageId().toString());
375                }
376                fireAdvisory(context, topic, payload, null, advisoryMessage);
377            }
378        } catch (Exception e) {
379            handleFireFailure("consumed", e);
380        }
381    }
382
383    @Override
384    public void messageDelivered(ConnectionContext context, MessageReference messageReference) {
385        super.messageDelivered(context, messageReference);
386        try {
387            if (!messageReference.isAdvisory()) {
388                ActiveMQTopic topic = AdvisorySupport.getMessageDeliveredAdvisoryTopic(messageReference.getMessage().getDestination());
389                Message payload = messageReference.getMessage().copy();
390                payload.clearBody();
391                ActiveMQMessage advisoryMessage = new ActiveMQMessage();
392                advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_MESSAGE_ID, payload.getMessageId().toString());
393                ActiveMQDestination destination = payload.getDestination();
394                if (destination != null) {
395                    advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_DESTINATION, payload.getMessageId().toString());
396                }
397                fireAdvisory(context, topic, payload, null, advisoryMessage);
398            }
399        } catch (Exception e) {
400            handleFireFailure("delivered", e);
401        }
402    }
403
404    @Override
405    public void messageDiscarded(ConnectionContext context, Subscription sub, MessageReference messageReference) {
406        super.messageDiscarded(context, sub, messageReference);
407        try {
408            if (!messageReference.isAdvisory()) {
409                ActiveMQTopic topic = AdvisorySupport.getMessageDiscardedAdvisoryTopic(messageReference.getMessage().getDestination());
410                Message payload = messageReference.getMessage().copy();
411                payload.clearBody();
412                ActiveMQMessage advisoryMessage = new ActiveMQMessage();
413                if (sub instanceof TopicSubscription) {
414                    advisoryMessage.setIntProperty(AdvisorySupport.MSG_PROPERTY_DISCARDED_COUNT, ((TopicSubscription) sub).discarded());
415                }
416                advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_MESSAGE_ID, payload.getMessageId().toString());
417                advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_CONSUMER_ID, sub.getConsumerInfo().getConsumerId().toString());
418                ActiveMQDestination destination = payload.getDestination();
419                if (destination != null) {
420                    advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_DESTINATION, payload.getMessageId().toString());
421                }
422                fireAdvisory(context, topic, payload, null, advisoryMessage);
423            }
424        } catch (Exception e) {
425            handleFireFailure("discarded", e);
426        }
427    }
428
429    @Override
430    public void slowConsumer(ConnectionContext context, Destination destination, Subscription subs) {
431        super.slowConsumer(context, destination, subs);
432        try {
433            if (!AdvisorySupport.isAdvisoryTopic(destination.getActiveMQDestination())) {
434                ActiveMQTopic topic = AdvisorySupport.getSlowConsumerAdvisoryTopic(destination.getActiveMQDestination());
435                ActiveMQMessage advisoryMessage = new ActiveMQMessage();
436                advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_CONSUMER_ID, subs.getConsumerInfo().getConsumerId().toString());
437                fireAdvisory(context, topic, subs.getConsumerInfo(), null, advisoryMessage);
438            }
439        } catch (Exception e) {
440            handleFireFailure("slow consumer", e);
441        }
442    }
443
444    @Override
445    public void fastProducer(ConnectionContext context, ProducerInfo producerInfo, ActiveMQDestination destination) {
446        super.fastProducer(context, producerInfo, destination);
447        try {
448            if (!AdvisorySupport.isAdvisoryTopic(destination)) {
449                ActiveMQTopic topic = AdvisorySupport.getFastProducerAdvisoryTopic(destination);
450                ActiveMQMessage advisoryMessage = new ActiveMQMessage();
451                advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_PRODUCER_ID, producerInfo.getProducerId().toString());
452                fireAdvisory(context, topic, producerInfo, null, advisoryMessage);
453            }
454        } catch (Exception e) {
455            handleFireFailure("fast producer", e);
456        }
457    }
458
459    @Override
460    public void isFull(ConnectionContext context, Destination destination, Usage usage) {
461        super.isFull(context, destination, usage);
462        if (AdvisorySupport.isAdvisoryTopic(destination.getActiveMQDestination()) == false) {
463            try {
464
465                ActiveMQTopic topic = AdvisorySupport.getFullAdvisoryTopic(destination.getActiveMQDestination());
466                ActiveMQMessage advisoryMessage = new ActiveMQMessage();
467                advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_USAGE_NAME, usage.getName());
468                fireAdvisory(context, topic, null, null, advisoryMessage);
469
470            } catch (Exception e) {
471                handleFireFailure("is full", e);
472            }
473        }
474    }
475
476    @Override
477    public void nowMasterBroker() {
478        super.nowMasterBroker();
479        try {
480            ActiveMQTopic topic = AdvisorySupport.getMasterBrokerAdvisoryTopic();
481            ActiveMQMessage advisoryMessage = new ActiveMQMessage();
482            ConnectionContext context = new ConnectionContext();
483            context.setSecurityContext(SecurityContext.BROKER_SECURITY_CONTEXT);
484            context.setBroker(getBrokerService().getBroker());
485            fireAdvisory(context, topic, null, null, advisoryMessage);
486        } catch (Exception e) {
487            handleFireFailure("now master broker", e);
488        }
489    }
490
491    @Override
492    public boolean sendToDeadLetterQueue(ConnectionContext context, MessageReference messageReference,
493                                         Subscription subscription, Throwable poisonCause) {
494        boolean wasDLQd = super.sendToDeadLetterQueue(context, messageReference, subscription, poisonCause);
495        if (wasDLQd) {
496            try {
497                if (!messageReference.isAdvisory()) {
498                    ActiveMQTopic topic = AdvisorySupport.getMessageDLQdAdvisoryTopic(messageReference.getMessage().getDestination());
499                    Message payload = messageReference.getMessage().copy();
500                    payload.clearBody();
501                    fireAdvisory(context, topic, payload);
502                }
503            } catch (Exception e) {
504                handleFireFailure("add to DLQ", e);
505            }
506        }
507
508        return wasDLQd;
509    }
510
511    @Override
512    public void networkBridgeStarted(BrokerInfo brokerInfo, boolean createdByDuplex, String remoteIp) {
513        try {
514            if (brokerInfo != null) {
515                ActiveMQMessage advisoryMessage = new ActiveMQMessage();
516                advisoryMessage.setBooleanProperty("started", true);
517                advisoryMessage.setBooleanProperty("createdByDuplex", createdByDuplex);
518                advisoryMessage.setStringProperty("remoteIp", remoteIp);
519                networkBridges.putIfAbsent(brokerInfo, advisoryMessage);
520
521                ActiveMQTopic topic = AdvisorySupport.getNetworkBridgeAdvisoryTopic();
522
523                ConnectionContext context = new ConnectionContext();
524                context.setSecurityContext(SecurityContext.BROKER_SECURITY_CONTEXT);
525                context.setBroker(getBrokerService().getBroker());
526                fireAdvisory(context, topic, brokerInfo, null, advisoryMessage);
527            }
528        } catch (Exception e) {
529            handleFireFailure("network bridge started", e);
530        }
531    }
532
533    @Override
534    public void networkBridgeStopped(BrokerInfo brokerInfo) {
535        try {
536            if (brokerInfo != null) {
537                ActiveMQMessage advisoryMessage = new ActiveMQMessage();
538                advisoryMessage.setBooleanProperty("started", false);
539                networkBridges.remove(brokerInfo);
540
541                ActiveMQTopic topic = AdvisorySupport.getNetworkBridgeAdvisoryTopic();
542
543                ConnectionContext context = new ConnectionContext();
544                context.setSecurityContext(SecurityContext.BROKER_SECURITY_CONTEXT);
545                context.setBroker(getBrokerService().getBroker());
546                fireAdvisory(context, topic, brokerInfo, null, advisoryMessage);
547            }
548        } catch (Exception e) {
549            handleFireFailure("network bridge stopped", e);
550        }
551    }
552
553    private void handleFireFailure(String message, Throwable cause) {
554        LOG.warn("Failed to fire {} advisory, reason: {}", message, cause);
555        LOG.debug("{} detail: {}", message, cause);
556    }
557
558    protected void fireAdvisory(ConnectionContext context, ActiveMQTopic topic, Command command) throws Exception {
559        fireAdvisory(context, topic, command, null);
560    }
561
562    protected void fireAdvisory(ConnectionContext context, ActiveMQTopic topic, Command command, ConsumerId targetConsumerId) throws Exception {
563        ActiveMQMessage advisoryMessage = new ActiveMQMessage();
564        fireAdvisory(context, topic, command, targetConsumerId, advisoryMessage);
565    }
566
567    protected void fireConsumerAdvisory(ConnectionContext context, ActiveMQDestination consumerDestination, ActiveMQTopic topic, Command command) throws Exception {
568        fireConsumerAdvisory(context, consumerDestination, topic, command, null);
569    }
570
571    protected void fireConsumerAdvisory(ConnectionContext context, ActiveMQDestination consumerDestination, ActiveMQTopic topic, Command command, ConsumerId targetConsumerId) throws Exception {
572        ActiveMQMessage advisoryMessage = new ActiveMQMessage();
573        int count = 0;
574        Set<Destination> set = getDestinations(consumerDestination);
575        if (set != null) {
576            for (Destination dest : set) {
577                count += dest.getDestinationStatistics().getConsumers().getCount();
578            }
579        }
580        advisoryMessage.setIntProperty(AdvisorySupport.MSG_PROPERTY_CONSUMER_COUNT, count);
581
582        fireAdvisory(context, topic, command, targetConsumerId, advisoryMessage);
583    }
584
585    protected void fireProducerAdvisory(ConnectionContext context, ActiveMQDestination producerDestination, ActiveMQTopic topic, Command command) throws Exception {
586        fireProducerAdvisory(context, producerDestination, topic, command, null);
587    }
588
589    protected void fireProducerAdvisory(ConnectionContext context, ActiveMQDestination producerDestination, ActiveMQTopic topic, Command command, ConsumerId targetConsumerId) throws Exception {
590        ActiveMQMessage advisoryMessage = new ActiveMQMessage();
591        int count = 0;
592        if (producerDestination != null) {
593            Set<Destination> set = getDestinations(producerDestination);
594            if (set != null) {
595                for (Destination dest : set) {
596                    count += dest.getDestinationStatistics().getProducers().getCount();
597                }
598            }
599        }
600        advisoryMessage.setIntProperty("producerCount", count);
601        fireAdvisory(context, topic, command, targetConsumerId, advisoryMessage);
602    }
603
604    public void fireAdvisory(ConnectionContext context, ActiveMQTopic topic, Command command, ConsumerId targetConsumerId, ActiveMQMessage advisoryMessage) throws Exception {
605        if (getBrokerService().isStarted()) {
606            //set properties
607            advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_ORIGIN_BROKER_NAME, getBrokerName());
608            String id = getBrokerId() != null ? getBrokerId().getValue() : "NOT_SET";
609            advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_ORIGIN_BROKER_ID, id);
610
611            String url = getBrokerService().getVmConnectorURI().toString();
612            if (getBrokerService().getDefaultSocketURIString() != null) {
613                url = getBrokerService().getDefaultSocketURIString();
614            }
615            advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_ORIGIN_BROKER_URL, url);
616
617            //set the data structure
618            advisoryMessage.setDataStructure(command);
619            advisoryMessage.setPersistent(false);
620            advisoryMessage.setType(AdvisorySupport.ADIVSORY_MESSAGE_TYPE);
621            advisoryMessage.setMessageId(new MessageId(advisoryProducerId, messageIdGenerator.getNextSequenceId()));
622            advisoryMessage.setTargetConsumerId(targetConsumerId);
623            advisoryMessage.setDestination(topic);
624            advisoryMessage.setResponseRequired(false);
625            advisoryMessage.setProducerId(advisoryProducerId);
626            boolean originalFlowControl = context.isProducerFlowControl();
627            final ProducerBrokerExchange producerExchange = new ProducerBrokerExchange();
628            producerExchange.setConnectionContext(context);
629            producerExchange.setMutable(true);
630            producerExchange.setProducerState(new ProducerState(new ProducerInfo()));
631            try {
632                context.setProducerFlowControl(false);
633                next.send(producerExchange, advisoryMessage);
634            } finally {
635                context.setProducerFlowControl(originalFlowControl);
636            }
637        }
638    }
639
640    public Map<ConnectionId, ConnectionInfo> getAdvisoryConnections() {
641        return connections;
642    }
643
644    public Collection<ConsumerInfo> getAdvisoryConsumers() {
645        consumersLock.readLock().lock();
646        try {
647            return new ArrayList<ConsumerInfo>(consumers.values());
648        } finally {
649            consumersLock.readLock().unlock();
650        }
651    }
652
653    public Map<ProducerId, ProducerInfo> getAdvisoryProducers() {
654        return producers;
655    }
656
657    public Map<ActiveMQDestination, DestinationInfo> getAdvisoryDestinations() {
658        return destinations;
659    }
660}