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imporoved the advisory message being sent by topics when no consumer is listening: 

- It sends it non transactional
 - It does does not block due to flow control

git-svn-id: https://svn.apache.org/repos/asf/incubator/activemq/trunk@360329 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Hiram R. Chirino 2005-12-31 16:50:52 +00:00
parent 77dd8fb71d
commit 61ab31e758
2 changed files with 30 additions and 14 deletions
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18
activemq-core/src/main/java/org/apache/activemq/broker/region/PrefetchSubscription.java
View File

@ -152,6 +152,8 @@ abstract public class PrefetchSubscription extends AbstractSubscription {
} else if( ack.isPoisonAck() ) {
// TODO: what if the message is already in a DLQ???
// Handle the poison ACK case: we need to send the message to a DLQ
if( ack.isInTransaction() )
throw new JMSException("Poison ack cannot be transacted: "+ack);
@ -175,20 +177,16 @@ abstract public class PrefetchSubscription extends AbstractSubscription {
Message message = node.getMessage();
if( message !=null ) {
// TODO is this meant to be == null?
// The original destination and transaction id do not get filled when the message is first sent,
// it is only populated if the message is routed to another destination like the DLQ
if( message.getOriginalDestination()!=null )
message.setOriginalDestination(message.getDestination());
ActiveMQDestination originalDestination = message.getOriginalDestination();
if (originalDestination == null) {
originalDestination = message.getDestination();
}
DeadLetterStrategy deadLetterStrategy = node.getRegionDestination().getDeadLetterStrategy();
ActiveMQDestination deadLetterDestination = deadLetterStrategy.getDeadLetterQueueFor(originalDestination);
message.setDestination(deadLetterDestination);
if( message.getOriginalTransactionId()!=null )
message.setOriginalTransactionId(message.getTransactionId());
DeadLetterStrategy deadLetterStrategy = node.getRegionDestination().getDeadLetterStrategy();
ActiveMQDestination deadLetterDestination = deadLetterStrategy.getDeadLetterQueueFor(message.getDestination());
message.setDestination(deadLetterDestination);
message.setTransactionId(null);
message.evictMarshlledForm();

26
activemq-core/src/main/java/org/apache/activemq/broker/region/Topic.java
View File

@ -338,11 +338,29 @@ public class Topic implements Destination {
if (sendAdvisoryIfNoConsumers) {
// allow messages with no consumers to be dispatched to a dead
// letter queue
ActiveMQDestination originalDestination = message.getDestination();
if (!AdvisorySupport.isAdvisoryTopic(originalDestination)) {
ActiveMQTopic advisoryTopic = AdvisorySupport.getNoTopicConsumersAdvisoryTopic(originalDestination);
if (!AdvisorySupport.isAdvisoryTopic(destination)) {
// The original destination and transaction id do not get filled when the message is first sent,
// it is only populated if the message is routed to another destination like the DLQ
if( message.getOriginalDestination()!=null )
message.setOriginalDestination(message.getDestination());
if( message.getOriginalTransactionId()!=null )
message.setOriginalTransactionId(message.getTransactionId());
ActiveMQTopic advisoryTopic = AdvisorySupport.getNoTopicConsumersAdvisoryTopic(destination);
message.setDestination(advisoryTopic);
context.getBroker().send(context, message);
message.setTransactionId(null);
message.evictMarshlledForm();
// Disable flow control for this since since we don't want to block.
boolean originalFlowControl = context.isProducerFlowControl();
try {
context.setProducerFlowControl(false);
context.getBroker().send(context, message);
} finally {
context.setProducerFlowControl(originalFlowControl);
}
}
}
}