@Override
protected DemandSubscription createDemandSubscription(ConsumerInfo info) throws IOException {
boolean isForcedDurable =
NetworkBridgeUtils.isForcedDurable(
info, dynamicallyIncludedDestinations, staticallyIncludedDestinations);
if (addToAlreadyInterestedConsumers(info, isForcedDurable)) {
return null; // don't want this subscription added
}
// add our original id to ourselves
info.addNetworkConsumerId(info.getConsumerId());
ConsumerId forcedDurableId = isForcedDurable ? info.getConsumerId() : null;
if (info.isDurable() || isForcedDurable) {
// set the subscriber name to something reproducible
info.setSubscriptionName(getSubscriberName(info.getDestination()));
// and override the consumerId with something unique so that it won't
// be removed if the durable subscriber (at the other end) goes away
info.setConsumerId(
new ConsumerId(localSessionInfo.getSessionId(), consumerIdGenerator.getNextSequenceId()));
}
info.setSelector(null);
DemandSubscription demandSubscription = doCreateDemandSubscription(info);
if (forcedDurableId != null) {
demandSubscription.addForcedDurableConsumer(forcedDurableId);
forcedDurableRemoteId.add(forcedDurableId);
}
return demandSubscription;
}
public void init() throws Exception {
AMQServerSession coreSession = session.getCoreSession();
SimpleString selector =
info.getSelector() == null ? null : new SimpleString(info.getSelector());
nativeId = session.getCoreServer().getStorageManager().generateID();
SimpleString address = new SimpleString(this.actualDest.getPhysicalName());
if (this.actualDest.isTopic()) {
String physicalName = this.actualDest.getPhysicalName();
if (physicalName.contains(".>")) {
// wildcard
physicalName = OpenWireUtil.convertWildcard(physicalName);
}
// on recreate we don't need to create queues
address = new SimpleString("jms.topic." + physicalName);
if (info.isDurable()) {
subQueueName =
new SimpleString(
ActiveMQDestination.createQueueNameForDurableSubscription(
true, info.getClientId(), info.getSubscriptionName()));
QueueQueryResult result = coreSession.executeQueueQuery(subQueueName);
if (result.isExists()) {
// Already exists
if (result.getConsumerCount() > 0) {
throw new IllegalStateException(
"Cannot create a subscriber on the durable subscription since it already has subscriber(s)");
}
SimpleString oldFilterString = result.getFilterString();
boolean selectorChanged =
selector == null && oldFilterString != null
|| oldFilterString == null && selector != null
|| oldFilterString != null
&& selector != null
&& !oldFilterString.equals(selector);
SimpleString oldTopicName = result.getAddress();
boolean topicChanged = !oldTopicName.equals(address);
if (selectorChanged || topicChanged) {
// Delete the old durable sub
coreSession.deleteQueue(subQueueName);
// Create the new one
coreSession.createQueue(address, subQueueName, selector, false, true);
}
} else {
coreSession.createQueue(address, subQueueName, selector, false, true);
}
} else {
subQueueName = new SimpleString(UUID.randomUUID().toString());
coreSession.createQueue(address, subQueueName, selector, true, false);
}
coreSession.createConsumer(nativeId, subQueueName, null, info.isBrowser(), false, -1);
} else {
SimpleString queueName = new SimpleString("jms.queue." + this.actualDest.getPhysicalName());
coreSession.createConsumer(nativeId, queueName, selector, info.isBrowser(), false, -1);
}
if (info.isBrowser()) {
AMQServerConsumer coreConsumer = coreSession.getConsumer(nativeId);
coreConsumer.setBrowserListener(this);
}
}