Hello,
I have a problem getting an interceptor stack up and running on my JBoss (4.2.3.GA). The jboss starts fine, without any error messages, but when I connect a client to the server I get a NullPointerException suggesting that my Interceptor is not loaded (since it is the first one on the stack):
...
Caused by: java.lang.NullPointerException
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessClusteredProxy.invoke(StatelessClusteredProxy.java:112)
...
The stack in question is a modified version of the default ClusteredStatelessSessionClientInterceptors stack defined in ejb3-interceptors-aop.xml:
jboss-aop.xml:
<interceptor scope="PER_VM"/>
<stack name="MtClusteredStatelessSessionClientInterceptors">
<!--interceptor-ref name="org.jboss.ejb3.remoting.ClusteredIsLocalInterceptor"/-->
<interceptor-ref name="com.computas.mt.jboss.clustering.FixedServerInterceptor"/>
<interceptor-ref name="org.jboss.aspects.security.SecurityClientInterceptor"/>
<interceptor-ref name="org.jboss.aspects.tx.ClientTxPropagationInterceptor"/>
<interceptor-ref name="org.jboss.aspects.remoting.ClusterChooserInterceptor"/>
<interceptor-ref name="org.jboss.aspects.remoting.InvokeRemoteInterceptor"/>
</stack>
Annotations of SLSB class:
@Stateless(name="EJBSingletonInvoker")
@Clustered(loadBalancePolicy = FixedServerBalancer.class)
@RemoteBinding(interceptorStack = "MtClusteredStatelessSessionClientInterceptors")
public class MtEJBSingletonInvokerBean { ...}
Interceptor:
public class FixedServerInterceptor extends ClusteredIsLocalInterceptor {
@Override
public Object invoke(Invocation invocation) throws Throwable {
// doing some extra stuff
return super.invoke(invocation);
}
The jboss-aop.xml and the custom interceptor are both located in a module called mt-aop-<version>.aop which is in turn placed in an .ear together with the other modules of the application.
Have also turned on instrumentation in the jboss-aop-jdk50.deployer/META-INF/jboss-service.xml
What am I missing / doing wrong here?
Regards
Jonas Heineson