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Which HA-JMS ConnectionFactory?
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created by <a href="http://community.jboss.org/people/gturner">Gerald Turner</a> in <i>JNDI and Naming</i> - <a href="http://community.jboss.org/message/572560#572560">View the full discussion</a>
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<div class="jive-rendered-content"><p>How should I code transacted HA-JMS sender and receiver non-EJB clients deployed within a cluster of JBoss containers?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The question is tricky because: we're using JBoss 4.2.3 in "all" configuration, but would like to upgrade to 5.1 without code changes; the clients are SAR deployments of custom MBeans; no EJB/MDB whatsoever.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Various informal documentation I've been able to scrape from the web suggests looking up the ConnectionFactory from local (non-HA) JNDI with name "java:/JmsXA" and looking up the Queue from HA-JNDI.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>JmsXA is not working because evidently (and as it's name suggests) it is an XAConnectionFactory, and the code:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>QueueSession session =<br/>    connection.createQueueSession(true, Session.SESSION_TRANSACTED);</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>…is not actually honoring the transcted/mode arguments (javadoc: "usage undefined"¹).  This becomes a problem when the receiver code issues session.commit() or session.rollback() which raise the exception "TransactionInProgressException: Should not be call from a XASession".</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I've searched for examples of using XASession from a non-EJB client and haven't come up with anything.  I suppose I could try experimenting with session.getXAResource², but first problem faced would be how to allocate Xid objects, and then I imagine there will be failures because the underlying DataSource isn't XA (MySQL Cluster/NDB storage engine doesn't support XA).</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Avoiding the XA mess and trying ConnectionFactory lookup with JNDI name "java:/ConnectionFactory" isn't working either: this object only exists on the master nodes local JNDI, it's not exported to HA-JNDI.  I suppose I'll have to do remote JNDI connection to the master node?  That sounds awful since I'll also need to detect and reconnect on master node failover.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Does JBoss 5.1 / JBoss Messaging "fix" any of this?  I could change targets but I'm having massive interoperability problems between 4.2 and 5.1 in other applications (several clusters with total of 300+ JBoss application servers, "fork-lift" upgrade of our applications isn't<br/>pretty).</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Any advice would be much appreciated!</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span>¹ </span><a class="jive-link-external-small" href="http://download.oracle.com/javaee/5/api/javax/jms/XAConnection.html#createSession(boolean,%20int" target="_blank">http://download.oracle.com/javaee/5/api/javax/jms/XAConnection.html#createSession(boolean,%20int</a><span>)</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span>² </span><a class="jive-link-external-small" href="http://download.oracle.com/javaee/5/api/javax/jms/XASession.html#getXAResource" target="_blank">http://download.oracle.com/javaee/5/api/javax/jms/XASession.html#getXAResource</a><span>()</span></p></div>
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