I figured out what I was doing wrong after some
drifting through the source code. Anyways, now it load
balances fine.
(Instead of sourceObject.getClass(), I used
org.jboss.jmx.adaptor.rmi.RMIAdaptor.class.)
However, I observed that when I tried to test the
failover by stopping one of my servers, the call to
the **stopping** server failed saying
Cause: javax.management.InstanceNotFoundException:
myDomain:name=SyncProcess is not registered.
Obviously the call went in after my MBean had been
unregistered, but before the RMI service had stopped.
Other than implementing a retry loop in the client,
can anyone recommend a solution to this ?
Thanks.
//Nicholas
--- Nicholas <[EMAIL PROTECTED]> wrote:
> I am trying to set up a cluster of MBean services
> where we have a set of custom MBeans. I would like
> to
> use load balancing and failover for the MBean
> clients,
> but it I realize that jmx/rmi/RMIAdaptor is not "HA
> ready". (Using 3.2.1, 3.2.2 and 3.2.3RC1)
>
> Reviewing the docs, I tried to implement this
> example:
>
> HAPartition myPartition =
> (HAPartition)ctx.lookup(�/HAPartition/� +
> partitionName);
> HARMIServer rmiserver = new
> HARMIServerImpl(myPartition, "MyService",
> MyService.class, myService);
> MyService stub =
> (MyService)rmiserver.createHAStub(new
> RoundRobin());
>
> I am not sure if this is the right way to go, but
> screw the torpedoes....
>
> The first thing I ran into is that although
> HARMIServerImpl implements createHAStub(), the
> interface HARMIServer does not.
>
> So I did this:
>
> Object sourceObject =
> ctx.lookup("jmx/rmi/RMIAdaptor");
> HAPartition myPartition =
> (HAPartition)ctx.lookup("/HAPartition/" +
> partitionName);
> HARMIServer rmiserver = new
> HARMIServerImpl(myPartition, "HARMIAdaptor",
> sourceObject.getClass(), sourceObject);
> // Here I cast the HARMIServer to a HARMIServerImpl
> org.jboss.jmx.adaptor.rmi.RMIAdaptor stub =
>
(org.jboss.jmx.adaptor.rmi.RMIAdaptor)((HARMIServerImpl)rmiserver).createHAStub(new
> RoundRobin());
>
> Then I take the stub and bind it back into JNDI
> where
> I can retrieve it later.
>
> Well it compiled fine......(famous last words), but
> at
> runtine I get this error:
>
> java.lang.IllegalArgumentException: $Proxy25 is not
> an
> interface
> at
>
java.lang.reflect.Proxy.getProxyClass(Proxy.java:340)
> at
>
java.lang.reflect.Proxy.newProxyInstance(Proxy.java:552)
> at
>
org.jboss.ha.framework.server.HARMIServerImpl.createHAStub(HARMIServerImpl.java:184)
> at
>
com.adp.sbs.jboss.ha.HAExporter.start(HAExporter.java:58)
>
> Am I going in the right direction ?
>
> Thanks.
>
> //Nicholas
>
>
>
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=====
Nicholas Whitehead
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