Mule JMS Topic and ActiveMQ Configuration - mule

Question

I am using Mule ESB to design a process whereby one can post a message to a topic. Subscribers will listen to the topic and receive messages. Each subscriber will act on the messages differently. The goal here is to have the ability to post a test message to the topic from HTTP for testing subscribers.
Here is how I have the JMS connection configured:
<!-- JMS Topic connector -->
<jms:activemq-connector name="jmsTopicConnection" specification="1.1" brokerURL="tcp://localhost:61616" validateConnections="true" doc:name="Active MQ2" durable="true" numberOfConcurrentTransactedReceivers="2"/>
This is the flow:
<flow name="auditJMSServiceFlow">
<http:listener config-ref="HTTP" path="/Audit/Activity" responseStreamingMode="ALWAYS" doc:name="HTTP"/>
<set-variable variableName="#['id']" value="#[message.inboundProperties['id']]" doc:name="set dynamic id"/>
<set-payload value="===TOPIC===" doc:name="Set Payload" />
<request-reply storePrefix="mainFlow">
<jms:inbound-endpoint topic="Audit.Activity" connector-ref="jmsTopicConnection" doc:name="JMS Topic Audit.Activity" exchange-pattern="request-response" durableName="audit_activity">
<jms:transaction action="ALWAYS_BEGIN" />
<!-- Not required to explicitly have this element. Mule will put this in implicitly. -->
<!-- <jms:jmsmessage-to-object-transformer displayName="JmsMsg to Object"/> -->
</jms:inbound-endpoint>
</request-reply>
<json:object-to-json-transformer doc:name="transform JMS message to JSON"/>
<json:validate-schema schemaLocation="resource://AuditMsgSchema.json" doc:name="Validate Json Schema"/>
<component class="com.baml.panther.audit.service.impl.AuditServiceImpl" doc:name="Java"/>
<default-exception-strategy>
<commit-transaction exception-pattern="com.foo.ExpectedExceptionType"/>
<jms:outbound-endpoint queue="dead.letter" connector-ref="jmsConnection">
<jms:transaction action="JOIN_IF_POSSIBLE" />
</jms:outbound-endpoint>
</default-exception-strategy>
<logger message="=== #[message.payload] received #[org.mule.util.DateUtiles.getTimeStamp('dd-MM-yyyy_HH-mm-ss.SSS')]" level="INFO" doc:name="Logger"/>
When I am running through the test I get the following error:
Any suggestions would be greatly appreciated.
Russ

Answer 1

For the error: Your request-reply scope is missing an outbound endpoint. You only have the inbound-endpoint (jms:inbound-endpoint). You need to provide the outbound-endpoint as well.
<request-reply storePrefix="mainFlow">
<jms:inbound-endpoint topic="Audit.Activity" connector-ref="jmsTopicConnection" doc:name="JMS Topic Audit.Activity" exchange-pattern="request-response" durableName="audit_activity">
<jms:transaction action="ALWAYS_BEGIN" />
<!-- Not required to explicitly have this element. Mule will put this in implicitly. -->
<!-- <jms:jmsmessage-to-object-transformer displayName="JmsMsg to Object"/> -->
</jms:inbound-endpoint>
</request-reply>
Not sure what your aim there but if you put just a jms:outbound-enpoint (instead of the whole request-reply block), you can send a message to the JMS topic.

Answer 2

The problem is that you cannot put a message source as the first message processor in a request-reply. The request reply allows you a kind of synchronous call for async protocols like JMS.
If you want to send a message to the message broker at the point where you put the request-reply just put a JMS outbound-endpoint.
If what you want to do is consume a message from the JMS topic you have to put a JMS inbound endpoint as the first message processor in a flow.