JBoss callback for JMS Client

[bfach]

Hello,

I was wondering if there is a callback for the JMS Client in the event that a node enters the cluster? The purpose for this would be to inform the multiple connections that a new or restarted server has entered/reentered the cluster. The closest thing now is the ExceptionListener but this is only for the ConnectionFactory with supportsFailover set to false.

Is there a callback to inform the client that the cluster state has changed?

Thanks in advance,

[clebert.suconic]

You could maybe implement a LoadBalancingFactory, and set it up on the ConnectionFactory

public class MyLoadbalancingFactory extends LoadBalancingFactory

{
 public LoadBalancingPolicy createLoadBalancingPolicy(ConnectionFactoryDelegate[] view)
 {
 return new MyRoundRobinLoadBalancingPolicy(view);
 }

}

And MyRoundRobinLoadBalancingPolicy:

public class MyRoundRobinLoadBalancingPolicy extends RoundRobinLoadBalancingPolicy

{
 public synchronized void updateView(ConnectionFactoryDelegate[] delegates)
 {
 super.updateView(delegates);
 }


}

You should be notified on the client when an update happens on the topology.


But if you don't really need a callback, on ClientConnectionFactoryDelegate, you will find the getTopology method.

You probably need to access The ClientConnectionFactoryDeleget throught JBossConnectionFactory:

(ClientClusteredConnectionFactoryDelegate)(((JBossConnectionFactory)cfFromJNDI).getDelegate).getTopology();

[bfach]

Hey,

I am wondering if this could be a feature for JBM 2? This would allow the JMS Client to know when a new server has entered the cluster.