class loading of an inbound resource adapter?
Hello,
I have just written an inbound resource adapter and everything seems to work fine with it. When I deploy my RA to the JBoss 7.0.1 AS, the container calls the ResourceAdapter.start(BootstrapContext ctx) method and I get a log message that the resource adapter has been started successfully.
In the next step, I try to activate an endpoint for my MDB using the following annotations:
...
import de.RATest.UDPMessageListener;
@MessageDriven(messageListenerInterface = UDPMessageListener.class,
activationConfig={
@ActivationConfigProperty(propertyName = "port", propertyValue="15660")
})
public class UDPMessageDrivenBean implements UDPMessageListener{
public void onMessage(String str){
...
}
}
Unfortunately when I deploy the MDB, I end up with a NoClassDefFoundError and ClassNotFoundException for the MessageListener Interface:
23:56:30,367 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-4) MSC00001: Failed to start service jboss.deployment.subunit."MDB_RA_TEST.ear"."MDBs.war".INSTALL: org.jboss.msc.service.StartException in service jboss.deployment.subunit."MDB_RA_TEST.ear"."MDBs.war".INSTALL: Failed to process phase INSTALL of subdeployment "MDBs.war" of deployment "MDB_RA_TEST.ear" at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:121) at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1765) at org.jboss.msc.service.ServiceControllerImpl$ClearTCCLTask.run(ServiceControllerImpl.java:2291) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_26] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_26] at java.lang.Thread.run(Thread.java:662) [:1.6.0_26] Caused by: java.lang.LinkageError: Failed to link UDPMessageDrivenBean (Module "deployment.MDB_RA_TEST.ear.MDBs.war:main" from Service Module Loader) at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:401) at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:261) at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:76) at org.jboss.modules.Module.loadModuleClass(Module.java:588) at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:183) at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:358) at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:330) at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:307) at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:101) at java.lang.Class.forName0(Native Method) [:1.6.0_26] at java.lang.Class.forName(Class.java:247) [:1.6.0_26] at org.jboss.as.ee.component.EEClassConfigurationProcessor$1.compute(EEClassConfigurationProcessor.java:124) at org.jboss.as.ee.component.EEClassConfigurationProcessor$1.compute(EEClassConfigurationProcessor.java:114) at org.jboss.as.ee.component.LazyValue.get(LazyValue.java:40) at org.jboss.as.ee.component.EEApplicationDescription.getClassConfiguration(EEApplicationDescription.java:183) at org.jboss.as.ejb3.component.messagedriven.MessageDrivenComponentDescription.createConfiguration(MessageDrivenComponentDescription.java:78) at org.jboss.as.ee.component.EEModuleConfigurationProcessor.deploy(EEModuleConfigurationProcessor.java:63) at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:115) ... 5 more Caused by: java.lang.NoClassDefFoundError: de/RATest/UDPMessageListener at java.lang.ClassLoader.defineClass1(Native Method) [:1.6.0_26] at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) [:1.6.0_26] at java.lang.ClassLoader.defineClass(ClassLoader.java:615) [:1.6.0_26] at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) [:1.6.0_26] at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:397) ... 22 more Caused by: java.lang.ClassNotFoundException: de.RATest.UDPMessageListener from [Module "deployment.MDB_RA_TEST.ear.MDBs.war:main" from Service Module Loader] at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:191) at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:358) at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:330) at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:330) at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:307) at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:101) ... 27 more
I'm relatively new in the Java EE world and have not a lot of experiences with resource adapters, but this exceptions seems to me that the classes of the .RAR-file are not loaded correctly. I have read parts of the specification and also tried a lot with different combinations of archives, for example: a standalone .rar and a .ejb-jar file, everything inside of an .ear-file and a lot of other combination - but nothing has worked.
I am actually not sure anymore, that the resource adapter is completely correct. I have some questions that maybe could solve my problem:
- do I need an JBoss specific deployment descriptor for the resource adapter?
- do I have to modify the standalone-preview.xml also for an inbound resource adapter?
- do I need something like the @ResourceAdapter annotation in my MDB?
- if my inbound resource adapter is correct, should I see it in the management console under "Connector" -> "Resource Adapters"?
Here are some more facts, that could be important:
- use of JCA 1.6
- only annotations, so I have no ra.xml or ironjacamar.xml
- I have started the standalone-preview.xml without any modifications
- I have checked the RA with the ironjacamar validator and ended up with a "Validation successful"
I have really no clue how to go on and hope that you can help me. To simplify matters I have attached the sources.
