10:08 a.m.
I'm testing proxy-clustered and am seeing a failure that looks like a problem in the
core proxy module.
Test is doing a lookup of an SLSB; call to ProxyFactory to create the proxy fails:
| javax.naming.NamingException: Could not dereference object [Root exception is
java.lang.RuntimeException: Could not create the EJB3 Business Proxy implementing
"org.jboss.ejb3.test.clusteredsession.ClusteredStatelessRemote" for
clusteredStateless]
| at
org.jnp.interfaces.NamingContext.getObjectInstanceWrapFailure(NamingContext.java:1340)
| at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:765)
| at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:629)
| at javax.naming.InitialContext.lookup(InitialContext.java:351)
| at
org.jboss.ejb3.test.clusteredsession.unit.StatelessUnitTestCase.testLoadbalance(StatelessUnitTestCase.java:72)
| at junit.extensions.TestDecorator.basicRun(TestDecorator.java:24)
| at junit.extensions.TestSetup$1.protect(TestSetup.java:23)
| at junit.extensions.TestSetup.run(TestSetup.java:27)
| Caused by: java.lang.RuntimeException: Could not create the EJB3 Business Proxy
implementing "org.jboss.ejb3.test.clusteredsession.ClusteredStatelessRemote" for
clusteredStateless
| at
org.jboss.ejb3.proxy.factory.session.SessionProxyFactoryBase.createProxyBusiness(SessionProxyFactoryBase.java:234)
| at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:121)
| at
org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
| at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:908)
| at
org.jboss.remoting.transport.socket.ServerThread.completeInvocation(ServerThread.java:742)
| at
org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:695)
| at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:522)
| at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:230)
| Caused by: java.lang.LinkageError: loader constraints violated when linking
org/jboss/ejb3/test/clusteredsession/NodeAnswer class
| at java.lang.Class.getDeclaredConstructors0(Native Method)
| at java.lang.Class.privateGetDeclaredConstructors(Class.java:2357)
| at java.lang.Class.getConstructor0(Class.java:2671)
| at java.lang.Class.getConstructor(Class.java:1629)
| at
org.jboss.ejb3.proxy.factory.ProxyFactoryBase.createProxyConstructor(ProxyFactoryBase.java:124)
| at
org.jboss.ejb3.proxy.factory.session.SessionProxyFactoryBase.createProxyBusiness(SessionProxyFactoryBase.java:212)
| at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:121)
| at
org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
| at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:908)
| at
org.jboss.remoting.transport.socket.ServerThread.completeInvocation(ServerThread.java:742)
| at
org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:695)
| at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:522)
| at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:230)
| at
org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:206)
| at org.jboss.remoting.Client.invoke(Client.java:1708)
| at org.jboss.remoting.Client.invoke(Client.java:612)
| at
org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:60)
| at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
| at
org.jboss.aspects.remoting.ClusterChooserInterceptor.invoke(ClusterChooserInterceptor.java:84)
| at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
| at
org.jboss.ejb3.proxy.remoting.IsLocalProxyFactoryInterceptor.invoke(IsLocalProxyFactoryInterceptor.java:72)
| at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
| at org.jboss.aspects.remoting.ClusteredPojiProxy.invoke(ClusteredPojiProxy.java:79)
| at $Proxy2.createProxyBusiness(Unknown Source)
| at
org.jboss.ejb3.proxy.objectfactory.session.SessionProxyObjectFactory.createProxy(SessionProxyObjectFactory.java:129)
| at
org.jboss.ejb3.proxy.clustered.objectfactory.session.SessionClusteredProxyObjectFactory.getProxy(SessionClusteredProxyObjectFactory.java:76)
| at
org.jboss.ejb3.proxy.objectfactory.ProxyObjectFactory.getObjectInstance(ProxyObjectFactory.java:146)
| at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
| at org.jnp.interfaces.NamingContext.getObjectInstance(NamingContext.java:1315)
| at
org.jnp.interfaces.NamingContext.getObjectInstanceWrapFailure(NamingContext.java:1332)
| at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:765)
| at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:629)
| at javax.naming.InitialContext.lookup(InitialContext.java:351)
| at
org.jboss.ejb3.test.clusteredsession.unit.StatelessUnitTestCase.testLoadbalance(StatelessUnitTestCase.java:72)
| at junit.extensions.TestDecorator.basicRun(TestDecorator.java:24)
| at junit.extensions.TestSetup$1.protect(TestSetup.java:23)
| at junit.extensions.TestSetup.run(TestSetup.java:27)
|
Failure is coming in the SessionProxyFactoryBase code that attempts to replace the cached
proxy constructor with one created using the TCCL:
| // Obtain the correct business proxy constructor
| Constructor<?> constructor =
this.getConstructorsProxySpecificBusinessInterface().get(
| businessInterfaceName.trim());
|
| /*
| * In place for web injection (isolated CL)
| */
| ClassLoader tcl = Thread.currentThread().getContextClassLoader();
| try
| {
| // See if we can get at the bean class from the TCL
| Class<?> businessInterfaceClass =
Class.forName(businessInterfaceName, false, tcl);
|
| // If so, use the TCL to generate the Proxy class, not the Container CL
| Set<Class<?>> businessInterfaces = new
HashSet<Class<?>>();
| businessInterfaces.add(businessInterfaceClass);
| constructor = this.createProxyConstructor(businessInterfaces, tcl);
|
| }
| catch (ClassNotFoundException cce)
| {
| // Ignore
| }
|
The business interface is simple:
| public interface ClusteredStatelessRemote
| {
| NodeAnswer getNodeState();
| }
|
It's odd to me that Class.forName() is able to load the ClusteredStatelessRemote class
using the TCCL, and a nested call to Proxy.getProxyClass(...) passing the classloader and
the interface is able to generate a proxy class, yet there is a LinkageError trying to
find the constructor.
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