JBOSS Scheduler

[jposuser]

Hi,
We are using the combination of JBOSS Scheduler and Timer to execute A Class Repeatedly. Right now the Class is packaged in a JAR. If we deploy only the JAR then the Scheduler Class works just fine.
But we have to deploy an EAR, which contains the JAR plus another WAR and some other Files. Now when we deploy the EAR and try to run the Scheduler Class, we get an error, displaying "Class not found." and the server shuts down.
So this is my question:- How do you make the Scheduler Service work with an EAR, with the Schedulable Class inside a JAR and the JAR which is inside the EAR. The EAR is the file which is deployed.

Any help and suggestions will be welcome.

Thanks in Advance.

[adrian.brock]

Which version of JBoss?
This should work with 3.0 and the UnifiedClassLoaders.

"and the server shuts down" ?????
can you post the output, server.log should give
you more information?

Regards,
Adrian

[jposuser]

Hi,
We are using JBOSS 2.4.6 and Catalina 4.0
I will post today the server log.

Have a nice day

[jposuser]

Hi Adrian,

I am uploading the Server logs. The file "Server log.txt", is the log file created by JBOSS.

The File "Starting JBOSS.txt" is the file which contains the contents of the console where the JBOSS server is started. For Example on the Command Prompt we give "run_with_catalina" to start the server, then it displays many items on the command prompt. That display is present in this file "Starting JBOSS.txt".

The Last file "JBOSS.jcml Configuration File.txt" is part of the configuration file jboss.jcml present inside JBOSS\CONF\CATALINA. It contains the configuration done for the timer/Scheduler Service.

I hope that these file help you. If you require some other files then please do drop me a line.

Thanks and hope to hear from you soon.

[adrian.brock]

In the 2.4 series the MBean won't have access to
ear classes. They are in a child classloader.

The only easy way to do this for 2.4 is to put the
class in a jar in the lib/ext directory. But this
means you cannot hot-deploy it.

Regards,
Adrian

[jposuser]

Thanks Adrian for your reply.
I was wondering if you could help me do the same with jboss 3.0. I have put the Scheduler class configuration inside the the "schedule-service.xml" file. I have put the timer MBEAN inside the jboss-service.xml file inside SERVER/DEFAULT/DEPLOY.
Everything else remains the same. The Schedulable class is inside a JAR. The JAR is packaged/put inside the EAR and the EAR file is deployed.
The Timer service starts, but the scheduler service gives an error "Class not found". Thus the Scheduler Service is not started.
Also one more thing, unlike 2.4.6 JBOSS server starts normally and all other functions excluding the Scheduler are avaliable. In 2.4.6 the server used to shut down.
Your time and help is appreciated
Bye

[adrian.brock]

Hi,

You will need to place a dependency between the
schedule-service and the ear. So the scheduler doesn't
start until after the ear is available.

The easiest mechanism is probably to number
the scheduler xml. The numbered deployments start at
the end in order.
e.g. 10scheduler-service.xml
You might need to modify jboss-service.xml to
use the PrefixDeploymentSorter if it is not enabled
by default.
Other mechanisms exist, checkout the JBoss3 quickstart guide form sourceforge.

You don't need to start the timer explicitly, the
scheduler will do this for you.

I don't know why 2.4.6 is stopping. I have never seen
that before. Does it start if you remove the scheduler
from the configuration?

Regards,
Adrian