Tuesday, February 19, 2013

UnsupportedOperationException in Creating Topics in WSO2 Message Broker

Some times we are getting the following error when try to create topics in WSO2 Message Broker.

Exception in thread "main" java.lang.UnsupportedOperationException: The new addressing based sytanx is not supported for AMQP 0-8/0-9 versions

at org.wso2.andes.client.AMQSession_0_8.handleAddressBasedDestination(AMQSession_0_8.java:572)
at org.wso2.andes.client.AMQSession.registerConsumer(AMQSession.java:2838)
at org.wso2.andes.client.AMQSession.access$500(AMQSession.java:117)
at org.wso2.andes.client.AMQSession$4.execute(AMQSession.java:2031)
at org.wso2.andes.client.AMQSession$4.execute(AMQSession.java:1997)
at org.wso2.andes.client.AMQConnectionDelegate_8_0.executeRetrySupport(AMQConnectionDelegate_8_0.java:305)
at org.wso2.andes.client.AMQConnection.executeRetrySupport(AMQConnection.java:621)
at org.wso2.andes.client.failover.FailoverRetrySupport.execute(FailoverRetrySupport.java:102)
at org.wso2.andes.client.AMQSession.createConsumerImpl(AMQSession.java:1995)
at org.wso2.andes.client.AMQSession.createExclusiveConsumer(AMQSession.java:976)
at org.wso2.andes.client.AMQSession.createSubscriber(AMQSession.java:1443)
at org.wso2.andes.client.AMQTopicSessionAdaptor.createSubscriber(AMQTopicSessionAdaptor.java:63)
at Subscriber.subscribe(Subscriber.java:52)

The reason for above exception is an implementation limitation. As we know wso2 Message Broker
is supporting AMQP 0-91 Specification and the core of the wso2 Message Broker is Andes which uses the apache-qpid in transport level communication.

In Andes implementation , there is a limitation that, it does not support dynamic queues or topics. If some one needs to use dynamic topics or queues , there is a solution for that.

Normally We create a topic as follows:

session = topicConnection.createTopicSession(false, javax.jms.Session.AUTO_ACKNOWLEDGE);
Topic topic = session.createTopic(topicName);
TopicSubscriber subscriber = session.createSubscriber(topic);

But if we do this with wso2 Message broker, we get the above exception. 

So we can get rid of this by adding the "BURL" syntax, before the name of the topic. It is as

session = topicConnection.createTopicSession(false, javax.jms.Session.AUTO_ACKNOWLEDGE);
Topic topic = session.createTopic("BURL:"+topicName);
TopicSubscriber subscriber = session.createSubscriber(topic);


  1. Hi,

    how can we het the topics list? I dont want to hard code my topic name... Is there a way to get list of all topics?


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