[jboss-user] [Clustering] - Lifecycle methods with HASingletonDeployer
I'm sorry if this is a common noob question, but I can't find a solution reading
FAQs and the wiki.
What I'm trying to do is writing a bean that should do some work when a new master
gets elected. I've read that the recomended way is to use a MDB with dependency on
'jboss.ha:service=HASingletonDeployer,type=Barrier', and then do the work in the
start lifecycle method.
I guess I have to register a listener on the lifecycle phase or something since I
don't get any calls to my start() method, but I don't know how to do that.
The version I'm using is 4.2.2.GA.
This is my tiny test bean:
import javax.ejb.ActivationConfigProperty;
| import javax.ejb.MessageDriven;
| import javax.jms.Message;
| import javax.jms.MessageListener;
|
| import org.jboss.annotation.ejb.Depends;
|
| @Depends("jboss.ha:service=HASingletonDeployer,type=Barrier")
| @MessageDriven(name = "DummyMDBean", activationConfig = {
| @ActivationConfigProperty(propertyName = "destinationType", propertyValue
= "javax.jms.Queue"),
| @ActivationConfigProperty(propertyName = "destination", propertyValue =
"queue/testQueue"),
| @ActivationConfigProperty(propertyName = "acknowledgeMode", propertyValue
= "Auto-acknowledge") })
| public class DummyMDBean implements MessageListener {
|
| public void start() throws Exception {
| System.out.println("=== START ===");
| }
|
| public void onMessage(Message message) {
| System.out.println("message = " + message);
| }
|
| public DummyMDBean() {
| System.out.println("=== CREATE ===");
| }
| }
I have also tried using a Service bean without any luck.
If the bean recieves a message DummyMDBean() and onMessage() gets called, but start()
never gets called.
The bean are stopped/started correct on all slaves and master, it's just the start() I
can't get to work.
Does anyone know of an alternative way to do the tasks when going from slave to master?
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