Error when conecting with a remote object from MBean
Hello.
I have a remote server and a client in the form of an MBean, designed following the Serialization Server example from JBoss Remoting.
The Server
import javax.management.MBeanServer;
import org.jboss.remoting.InvocationRequest;
import org.jboss.remoting.InvokerLocator;
import org.jboss.remoting.ServerInvocationHandler;
import org.jboss.remoting.ServerInvoker;
import org.jboss.remoting.callback.InvokerCallbackHandler;
import org.jboss.remoting.transport.Connector;
import ro.ebsoft.doorcontrol.comm.common.CommModuleMain;
import ro.ebsoft.doorcontrol.interfaces.CommModule;
public class Main {
private static String transport = "rmi";
private static String host = "localhost";
private static int port = 5400;
private static CommModule response;
public void setupServer(String locatorURI) throws Exception {
InvokerLocator locator = new InvokerLocator(locatorURI);
System.out.println("Starting remoting server with locator URI of: "
+ locatorURI);
Connector connector = new Connector(locator);
connector.create();
SampleInvocationHandler invocationHandler = new SampleInvocationHandler();
connector.addInvocationHandler("CommModule", invocationHandler);
connector.start();
}
// rmi server main class
public static void main(String args[]) {
String locatorURI = transport + "://" + host + ":" + port
+ "/?serializationtype=jboss";
Main main = new Main();
try {
response = new CommModuleMain();
main.setupServer(locatorURI);
while (true) {
Thread.sleep(1000);
}
} catch (Exception e) {
e.printStackTrace();
}
}
public static class SampleInvocationHandler implements
ServerInvocationHandler {
@Override
public void addListener(InvokerCallbackHandler arg0) {
}
@Override
public Object invoke(InvocationRequest invocation) throws Throwable {
System.out.println("Invocation request is "
+ invocation.getParameter());
return new CommModuleMain();
}
@Override
public void removeListener(InvokerCallbackHandler arg0) {
}
@Override
public void setInvoker(ServerInvoker arg0) {
}
@Override
public void setMBeanServer(MBeanServer arg0) {
}
}
}
The MBean class
package ro.ebsoft.doorcontrol.mbean.engine;
import org.jboss.remoting.Client;
import org.jboss.remoting.InvokerLocator;
import org.jboss.system.ServiceMBeanSupport;
import interfaces.CommModule;
public class CommEngine extends ServiceMBeanSupport implements CommEngineMBean {
private static String transport = "rmi";
private static String host = "localhost";
private static int port = 5400;
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public void printMessage(){
log.info(message);
}
protected void startService() throws Exception{
log.info("Starting CommModuleMBean");
String locatorURI = transport + "://" + host + ":" + port + "/?serializationtype=jboss";
log.info("Connecting to " + locatorURI);
//String locatorURI = transport + "://" + host + ":" + port;
InvokerLocator locator = new InvokerLocator(locatorURI);
Client remotingClient = new Client(locator);
remotingClient.connect();
try{
CommModule cm = (CommModule)remotingClient.invoke("CommModule");
}
catch(Throwable t){
t.printStackTrace();
}
}
protected void stopService() throws Exception{
log.info("Stopping with message: " + message);
}
//setters & getters
}
When I run both the server and a similar client (which is not an MBean), all goes well. But when I deploy my client as a .sar in the app server, I get
ERROR [MainDeployer] Could not create deployment: file:/opt/jboss-4.2.2.GA/server/default/deploy/commengine.sar org.jboss.deployment.DeploymentException: - nested throwable: (java.lang.reflect.UndeclaredThrowableException) at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java:196) at org.jboss.system.ServiceController.install(ServiceController.java:226) 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:585) at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94) at org.jboss.mx.server.Invocation.invoke(Invocation.java:86) at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210) at $Proxy4.install(Unknown Source) at org.jboss.deployment.SARDeployer.create(SARDeployer.java:249) at org.jboss.deployment.MainDeployer.create(MainDeployer.java:969) at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:818) at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782) 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:585) at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94) at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133) at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142) at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210) at $Proxy9.deploy(Unknown Source) at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421) at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:634) at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263) at org.jboss.deployment.scanner.AbstractDeploymentScanner.startService(AbstractDeploymentScanner.java:336) at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289) at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245) at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94) at org.jboss.mx.server.Invocation.invoke(Invocation.java:86) at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978) at $Proxy0.start(Unknown Source) at org.jboss.system.ServiceController.start(ServiceController.java:417) at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94) at org.jboss.mx.server.Invocation.invoke(Invocation.java:86) at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210) at $Proxy4.start(Unknown Source) at org.jboss.deployment.SARDeployer.start(SARDeployer.java:302) at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025) at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819) at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782) at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:766) 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:585) at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94) at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133) at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142) at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210) at $Proxy5.deploy(Unknown Source) at org.jboss.system.server.ServerImpl.doStart(ServerImpl.java:482) at org.jboss.system.server.ServerImpl.start(ServerImpl.java:362) at org.jboss.Main.boot(Main.java:200) at org.jboss.Main$1.run(Main.java:508) at java.lang.Thread.run(Thread.java:595) Caused by: java.lang.reflect.UndeclaredThrowableException at org.jboss.system.ServiceCreator.install(ServiceCreator.java:236) at org.jboss.system.ServiceConfigurator.internalInstall(ServiceConfigurator.java:451) at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java:171) ... 81 more Caused by: java.lang.NoClassDefFoundError: interfaces/CommModule 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.mx.server.MBeanServerImpl.instantiate(MBeanServerImpl.java:1232) at org.jboss.mx.server.MBeanServerImpl.instantiate(MBeanServerImpl.java:286) at org.jboss.mx.server.MBeanServerImpl.createMBean(MBeanServerImpl.java:344) at org.jboss.system.ServiceCreator.install(ServiceCreator.java:157) ... 83 more
I have included a .jar which contains interfaces.CommModule in the MBean .sar.
If I change the server to return. say, a String rather than a CommModule, all goes well, the MBean deploys and works as expected (obtains the string by invoking the remote server).
All I want to do is to obtain a remote instance of a CommModule when the app server starts.
Could someone explain what am I doing wrong? Or a better idea (any idea) of doing this?
Thank you for your time.