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From "Vamsavardhana Reddy" <c1vams...@gmail.com>
Subject Re: Help!!! Problems using KernelManagementHelper got from getRemoteKernelManager()
Date Thu, 27 Apr 2006 07:08:36 GMT
Hi Aron,

The code chunk from my first e-mail runs fine with G1.0 .  Some of the
recent changes might have broken the KernelDelegate.  I will try to create a
test client and post it to the dev-list.

Thanks,
Vamsi

On 4/25/06, Aaron Mulder <ammulder@alumni.princeton.edu> wrote:
>
> Well, maybe I spoke too soon.  After thinking more about it, I guess
> there are two options:
>
> 1) Create your own GBean to run on the server side, where your client
> gives simple commands and the GBean does all the work interfacing with
> the server components, so that there's no serialization involved to
> return a J2EEServer, etc.
>
> 2) It may be that it's not as hard as I'm imagining to convert GBean
> arguments and return types to AbstractNames and vice versa in the
> server and the proxies.  Can you post a simple test client that gets
> the servers from a domain or whatever and curently blows up?  That
> would make it easier to evaluate this kind of change.
>
> Thanks,
>      Aaron
>
> On 4/25/06, Aaron Mulder <ammulder@alumni.princeton.edu> wrote:
> > I don't think there's going to be a fix for 1.1 -- if a method returns
> > a GBean we don't have a way to serialize it to the client.  For 1.2 I
> > think we can work some magic in the proxies, and/or switch to a
> > different protocol altogether.
> >
> > Thanks,
> >     Aaron
> >
> > On 4/25/06, Vamsavardhana Reddy <c1vamsi1c@gmail.com> wrote:
> > > Hi,
> > >
> > >  I am running the following piece of code.
> > >
> > >          KernelManagementHelper mgr =
> > > KernelManagementHelper.getRemoteKernelManager("localhost",
> > > "system", "manager");
> > >          J2EEDomain domain = mgr.getDomains()[0];
> > >          String[] servers = domain.getServers();
> > >          System.out.println(servers[0]);
> > >          J2EEServer[] j2eeServers = domain.getServerInstances();
> > >          System.out.println(j2eeServers[0]);
> > >
> > >  domain.getServers() runs fine, whereas, domain.getServerInstances()
> throws
> > > an exception.  Please suggest a fix or a workaround for this problem.
> > >
> > >  -Vamsi
> > >  ----------------------------------------------
> > >  java.rmi.UnmarshalException: error unmarshalling return; nested
> exception
> > > is:
> > >      java.io.WriteAbortedException: writing aborted;
> > > java.io.NotSerializableException:
> > >
> org.apache.geronimo.management.geronimo.J2EEServer$$EnhancerByCGLIB$$d620c0d0
> > >      at
> > > sun.rmi.server.UnicastRef.invoke(UnicastRef.java:164)
> > >      at
> > > javax.management.remote.rmi.RMIConnectionImpl_Stub.invoke(Unknown
> > > Source)
> > >      at
> > > mx4j.remote.rmi.ClientInvoker.invoke(ClientInvoker.java:207)
> > >      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
> > > Method)
> > >      at
> > > sun.reflect.NativeMethodAccessorImpl.invoke(
> NativeMethodAccessorImpl.java:39)
> > >      at
> > > sun.reflect.DelegatingMethodAccessorImpl.invoke(
> DelegatingMethodAccessorImpl.java:25)
> > >      at java.lang.reflect.Method.invoke(Method.java:324)
> > >      at mx4j.remote.ClientProxy.invoke(ClientProxy.java:32)
> > >      at
> > > mx4j.remote.rmi.ClientUnmarshaller.chain(ClientUnmarshaller.java:65)
> > >      at
> > > mx4j.remote.rmi.ClientUnmarshaller.invoke(ClientUnmarshaller.java:54)
> > >      at $Proxy0.invoke(Unknown Source)
> > >      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
> > > Method)
> > >      at
> > > sun.reflect.NativeMethodAccessorImpl.invoke(
> NativeMethodAccessorImpl.java:39)
> > >      at
> > > sun.reflect.DelegatingMethodAccessorImpl.invoke(
> DelegatingMethodAccessorImpl.java:25)
> > >      at java.lang.reflect.Method.invoke(Method.java:324)
> > >      at mx4j.remote.ClientProxy.invoke(ClientProxy.java:32)
> > >      at
> > > mx4j.remote.rmi.ClientExceptionCatcher.invoke(
> ClientExceptionCatcher.java:40)
> > >      at $Proxy0.invoke(Unknown Source)
> > >      at
> > > org.apache.geronimo.system.jmx.KernelDelegate.invokeKernel(
> KernelDelegate.java:880)
> > >      at
> > > org.apache.geronimo.system.jmx.KernelDelegate.getAttribute(
> KernelDelegate.java:485)
> > >      at
> > > org.apache.geronimo.kernel.basic.KernelGetAttributeInvoker.invoke(
> KernelGetAttributeInvoker.java:36)
> > >      at
> > > org.apache.geronimo.system.jmx.JMXProxyMethodInterceptor.intercept(
> JMXProxyMethodInterceptor.java:89)
> > >      at
> > >
> org.apache.geronimo.management.geronimo.J2EEDomain$$EnhancerByCGLIB$$45e3ccef.getServerInstances
> (<generated>)
> > >      at PeekRemoteKernel.main(PeekRemoteKernel.java:19)
> > >  Caused by: java.io.WriteAbortedException: writing aborted;
> > > java.io.NotSerializableException:
> > >
> org.apache.geronimo.management.geronimo.J2EEServer$$EnhancerByCGLIB$$d620c0d0
> > >      at
> > > java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1278)
> > >      at
> > > java.io.ObjectInputStream.readArray(ObjectInputStream.java:1603)
> > >      at
> > > java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1271)
> > >      at
> > > java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
> > >      at
> > > sun.rmi.server.UnicastRef.unmarshalValue(UnicastRef.java:297)
> > >      at
> > > sun.rmi.server.UnicastRef.invoke(UnicastRef.java:146)
> > >      ... 23 more
> > >  Caused by: java.io.NotSerializableException:
> > >
> org.apache.geronimo.management.geronimo.J2EEServer$$EnhancerByCGLIB$$d620c0d0
> > >      at java.io.ObjectOutputStream.writeObject0(Unknown
> > > Source)
> > >      at java.io.ObjectOutputStream.writeArray(Unknown
> > > Source)
> > >      at java.io.ObjectOutputStream.writeObject0(Unknown
> > > Source)
> > >      at java.io.ObjectOutputStream.writeObject(Unknown
> > > Source)
> > >      at sun.rmi.server.UnicastRef.marshalValue(Unknown
> > > Source)
> > >      at sun.rmi.server.UnicastServerRef.dispatch(Unknown
> > > Source)
> > >      at sun.rmi.transport.Transport$1.run(Unknown Source)
> > >      at java.security.AccessController.doPrivileged(Native
> > > Method)
> > >      at sun.rmi.transport.Transport.serviceCall(Unknown
> > > Source)
> > >      at
> > > sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown
> > > Source)
> > >      at
> > > sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown
> > > Source)
> > >      at java.lang.Thread.run(Unknown Source)
> > >
> > >
> >
>

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