[JBoss Messaging] - NullPointerException while setting Bridge
by YogeshGLX
Hi,
I'm configuring jboss messaging bridge. Both the source and destination are jboss messaging 1.4 which are deployed on jboss-eap 4.3.
I have configured a Remote JMSProvider in jms-ds.xml as:
<mbean code="org.jboss.jms.jndi.JMSProviderLoader"
| name="jboss.mq:service=JMSProviderLoader,name=RemoteJMSProvider,server=Another">
| <attribute name="ProviderName">RemoteJMSProvider</attribute>
| <attribute name="ProviderAdapterClass">org.jboss.jms.jndi.JNDIProviderAdapter</attribute>
| <attribute name="Properties">
| java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
| java.naming.factory.url.pkgs=org.jnp.interfaces
| java.naming.provider.url=anotherjboss:1099
| </attribute>
| <attribute name="QueueFactoryRef">XAConnectionFactory</attribute>
| <!-- The topic factory -->
| <attribute name="TopicFactoryRef">XAConnectionFactory</attribute>
| </mbean>
|
This is the only change I have done to configure bridge apart from actual Bridge mbean config. which is :
| <mbean code="org.jboss.jms.server.bridge.BridgeService"
| name="jboss.messaging:service=Bridge,name=BridgeToRemote"
| xmbean-dd="xmdesc/Bridge-xmbean.xml">
|
| <depends optional-attribute-name="SourceProviderLoader">
| jboss.messaging:service=JMSProviderLoader,name=LocalJMSProvider</depends>
|
| <depends optional-attribute-name="TargetProviderLoader">
| jboss.mq:service=JMSProviderLoader,name=RemoteJMSProvider,server=Another</depends>
|
| <attribute name="SourceDestinationLookup">/queue/A</attribute>
|
| <attribute name="TargetDestinationLookup">/queue/B</attribute>
|
| <attribute name="SourceUsername">user1</attribute>
| <attribute name="SourcePassword">pwd1</attribute>
|
| <attribute name="TargetUsername">user2</attribute>
| <attribute name="TargetPassword">pwd2</attribute>
|
|
| <!-- Optional: The Quality Of Service mode to use, one of:
| QOS_AT_MOST_ONCE = 0;
| QOS_DUPLICATES_OK = 1;
| QOS_ONCE_AND_ONLY_ONCE = 2; -->
| <attribute name="QualityOfServiceMode">2</attribute>
|
| <attribute name="MaxBatchSize">5</attribute>
|
| <attribute name="MaxBatchTime">-1</attribute>
|
| <attribute name="FailureRetryInterval">50000</attribute>
|
| <attribute name="MaxRetries">-1</attribute>
|
| <attribute name="AddMessageIDInHeader">false</attribute>
|
| </mbean>
|
Another jboss is up and running but the bridge is unable to connect. I get a NPE like this:
12:12:41,250 WARN [Bridge] Failed to set up connections
java.lang.NullPointerException
at javax.naming.InitialContext.getURLScheme(InitialContext.java:228)
at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:277)
at javax.naming.InitialContext.lookup(InitialContext.java:351)
at org.jboss.jms.server.bridge.JNDIFactorySupport.createObject(JNDIFactorySupport.java:66)
at org.jboss.jms.server.bridge.JNDIConnectionFactoryFactory.createConnectionFactory(JNDIConnectionFactoryFactory.java:46)
at org.jboss.jms.server.bridge.Bridge.createConnection(Bridge.java:832)
at org.jboss.jms.server.bridge.Bridge.setupJMSObjects(Bridge.java:944)
at org.jboss.jms.server.bridge.Bridge.setupJMSObjectsWithRetry(Bridge.java:1152)
at org.jboss.jms.server.bridge.Bridge.access$1500(Bridge.java:66)
at org.jboss.jms.server.bridge.Bridge$FailureHandler.run(Bridge.java:1507)
at java.lang.Thread.run(Thread.java:595)
I further checked for any problems and just BEFORE this exception I'm getting another exception in PropertyEditors from jboss util package. Here is the stack trace for that exception:
12:21:05,341 TRACE [PropertyEditors] Failed to find property editor for: onewayThreadPool
12:21:05,341 TRACE [PropertyEditors] Failed to write property
java.lang.NullPointerException
at org.jboss.util.propertyeditor.PropertyEditors.mapJavaBeanProperties(PropertyEditors.java:373)
at org.jboss.remoting.transport.socket.SocketServerInvoker.setup(SocketServerInvoker.java:155)
at org.jboss.remoting.transport.bisocket.BisocketServerInvoker.setup(BisocketServerInvoker.java:510)
at org.jboss.remoting.ServerInvoker.create(ServerInvoker.java:836)
at org.jboss.remoting.transport.Connector.init(Connector.java:430)
at org.jboss.remoting.transport.Connector.create(Connector.java:777)
at org.jboss.remoting.transport.Connector.start(Connector.java:301)
at org.jboss.remoting.Client.addListener(Client.java:918)
at org.jboss.jms.client.remoting.JMSRemotingConnection.addInvokerCallbackHandler(JMSRemotingConnection.java:230)
at org.jboss.jms.client.remoting.JMSRemotingConnection.start(JMSRemotingConnection.java:340)
at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate.org$jboss$jms$client$delegate$ClientConnectionFactoryDelegate$createConnectionDelegate$aop(ClientConnectionFactoryDelegate.java:154)
at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate$createConnectionDelegate_N3019492359065420858.invokeNext(ClientConnectionFactoryDelegate$createConnectionDelegate_N3019492359065420858.java)
at org.jboss.jms.client.container.StateCreationAspect.handleCreateConnectionDelegate(StateCreationAspect.java:83)
at org.jboss.aop.advice.org.jboss.jms.client.container.StateCreationAspect0.invoke(StateCreationAspect0.java)
at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate$createConnectionDelegate_N3019492359065420858.invokeNext(ClientConnectionFactoryDelegate$createConnectionDelegate_N3019492359065420858.java)
at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate.createConnectionDelegate(ClientConnectionFactoryDelegate.java)
at org.jboss.jms.client.JBossConnectionFactory.createConnectionInternal(JBossConnectionFactory.java:205)
at org.jboss.jms.client.JBossConnectionFactory.createXAConnection(JBossConnectionFactory.java:128)
at org.jboss.jms.server.bridge.Bridge.createConnection(Bridge.java:858)
at org.jboss.jms.server.bridge.Bridge.setupJMSObjects(Bridge.java:940)
at org.jboss.jms.server.bridge.Bridge.setupJMSObjectsWithRetry(Bridge.java:1152)
at org.jboss.jms.server.bridge.Bridge.access$1500(Bridge.java:66)
at org.jboss.jms.server.bridge.Bridge$FailureHandler.run(Bridge.java:1507)
at java.lang.Thread.run(Thread.java:595)
I don't know if they are related, but still worth mentioning.
Also as an additional info. Both Jboss are simple standard stand-alone configurations with no fail-over/clustering configured.
why am I getting an NPE when Bridge is setting up connections?
Cheers,
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17 years, 4 months
[Microcontainer] - Re: Lifecycle stop() method and new objects
by gcompienne
At the moment I must admit I haven't defined any dependencies metadata as everything is self contained in a single small jar file. Do I still need to define them? (admittedly I kind of relied on the JAR structure deployer to define the default CL going with a JAR...)
The sample is a simple telnet echo server. If I connect to the echo server the "Handler" object gets created fine. And then if I delete the JAR, the bean is also undeployed fine.
Now, if I deploy and then immediately undeploy the JAR (without connecting to the telnet server) then I have a NoClassDefFoundError that occurs during the undeploy stage (typically when I try the close down any Handlers if any but to do that the code needs to create one dummy Handler...).
Here is the stack trace:
| 11:17:53,876 WARN [StartStopLifecycleAction] Error during stop for Controler
| java.lang.NoClassDefFoundError: mcfproto/impl/Handler
| at mcfproto.impl.NetServer.closeAll(NetServer.java:110)
| at mcfproto.impl.NetServer.stop(NetServer.java:72)
| at mcfproto.impl.ControlerImpl.stop(ControlerImpl.java:20)
| 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:597)
| at org.jboss.reflect.plugins.introspection.ReflectionUtils.invoke(ReflectionUtils.java:59)
| at org.jboss.reflect.plugins.introspection.ReflectMethodInfoImpl.invoke(ReflectMethodInfoImpl.java:150)
| at org.jboss.joinpoint.plugins.BasicMethodJoinPoint.dispatch(BasicMethodJoinPoint.java:66)
| at org.jboss.kernel.plugins.dependency.KernelControllerContextAction$JoinpointDispatchWrapper.execute(KernelCont
| rollerContextAction.java:241)
| at org.jboss.kernel.plugins.dependency.ExecutionWrapper.execute(ExecutionWrapper.java:47)
| at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchExecutionWrapper(KernelControllerCo
| ntextAction.java:109)
| at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchJoinPoint(KernelControllerContextAc
| tion.java:70)
| at org.jboss.kernel.plugins.dependency.LifecycleAction.uninstallActionInternal(LifecycleAction.java:249)
| at org.jboss.kernel.plugins.dependency.InstallsAwareAction.uninstallAction(InstallsAwareAction.java:157)
| at org.jboss.kernel.plugins.dependency.InstallsAwareAction.uninstallAction(InstallsAwareAction.java:42)
| at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleUninstallAction(SimpleControllerConte
| xtAction.java:79)
| at org.jboss.dependency.plugins.action.AccessControllerContextAction.uninstall(AccessControllerContextAction.jav
| a:131)
| at org.jboss.dependency.plugins.AbstractControllerContextActions.uninstall(AbstractControllerContextActions.java
| :58)
| at org.jboss.dependency.plugins.AbstractControllerContext.uninstall(AbstractControllerContext.java:354)
| at org.jboss.dependency.plugins.AbstractController.uninstall(AbstractController.java:1631)
| at org.jboss.dependency.plugins.AbstractController.uninstallContext(AbstractController.java:1242)
| at org.jboss.dependency.plugins.AbstractController.uninstallContext(AbstractController.java:1146)
| at org.jboss.dependency.plugins.AbstractController.uninstall(AbstractController.java:655)
| at org.jboss.dependency.plugins.AbstractController.uninstall(AbstractController.java:568)
| at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.undeploy(BeanMetaDataDeployer.java:156)
| at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.undeploy(BeanMetaDataDeployer.java:51)
| at org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalUndeploy(AbstractSimpleRealDeploy
| er.java:69)
| at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.undeploy(AbstractRealDeployer.java:112)
| at org.jboss.deployers.plugins.deployers.DeployerWrapper.undeploy(DeployerWrapper.java:192)
| at org.jboss.deployers.plugins.deployers.DeployersImpl.doUndeploy(DeployersImpl.java:1315)
| at org.jboss.deployers.plugins.deployers.DeployersImpl.doUninstallParentLast(DeployersImpl.java:1222)
| at org.jboss.deployers.plugins.deployers.DeployersImpl.doUninstallParentLast(DeployersImpl.java:1215)
| at org.jboss.deployers.plugins.deployers.DeployersImpl.uninstall(DeployersImpl.java:1177)
| at org.jboss.dependency.plugins.AbstractControllerContext.uninstall(AbstractControllerContext.java:354)
| at org.jboss.dependency.plugins.AbstractController.uninstall(AbstractController.java:1631)
| at org.jboss.dependency.plugins.AbstractController.uninstallContext(AbstractController.java:1242)
| at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:827)
| at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
| at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:543)
| at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:541)
| at org.jboss.system.server.profileservice.hotdeploy.HDScanner.scan(HDScanner.java:290)
| at org.jboss.system.server.profileservice.hotdeploy.HDScanner.run(HDScanner.java:221)
| at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
| at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
| at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
| at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.j
| ava:98)
| at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.
| java:181)
| at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205
| )
| at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
| at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
| at java.lang.Thread.run(Thread.java:619)
| 11:18:09,057 INFO [ControlerImpl] ControlerImpl started...
| 11:18:29,085 INFO [ControlerImpl] ControlerImpl stopped...
| 11:19:59,656 INFO [ControlerImpl] ControlerImpl started...
|
Here is the jboss-beans.xml
| <?xml version="1.0" encoding="UTF-8"?>
|
| <deployment xmlns="urn:jboss:bean-deployer:2.0">
|
| <bean name="Controler" class="mcfproto.impl.ControlerImpl">
| </bean>
|
| </deployment>
|
Here is the source for ControlerImpl:
| package mcfproto.impl;
|
| import org.jboss.logging.Logger;
|
| public class ControlerImpl {
| private static Logger log = Logger.getLogger(ControlerImpl.class);
|
| private NetServer server;
|
| public ControlerImpl() {
| server = new NetServer();
| }
|
| public void start(){
| server.start();
| log.info("ControlerImpl started...");
| }
|
| public void stop() {
| server.stop();
| log.info("ControlerImpl stopped...");
| }
|
| public void destroy() {
| server = null;
| }
|
| }
|
Here is the source for NetServer:
| package mcfproto.impl;
|
| import java.net.ServerSocket;
| import java.net.Socket;
| import java.util.HashSet;
| import java.util.Set;
|
| import org.jboss.logging.Logger;
|
| /**
| * Dummy telnet server that listen on port 23 and is used for testing
| */
| public class NetServer {
|
| private final static Logger LOG = Logger.getLogger(NetServer.class);
|
| private static final int TELNET_PORT = 23;
|
| private ServerSocket m_Server;
|
| volatile boolean m_Quit;
|
| private Set<Handler> m_Handlers;
|
| private Thread m_Thread;
|
| public NetServer() {
| m_Handlers = new HashSet<Handler>();
| }
|
| public void start() {
| try {
| m_Thread = new Thread(new Runnable() {
| public void run() {
| while (!m_Quit) {
| try {
| m_Server = new ServerSocket(TELNET_PORT);
| loop();
| } catch (Exception e) {
| if (m_Quit) {
| // It is expected that we get an exception here
| // as the "stop" method violently close the socket...
| LOG.debug(e);
| } else {
| LOG.error("[NetServer] Inner server listen loop...", e);
| sleep(1000);
| }
| }
| }
| closeAll();
| }
| }, "NetServer Thread");
| m_Thread.start();
| } catch (Exception e) {
| throw new RuntimeException(e);
| }
| }
|
| public void stop() {
| m_Quit = true;
| try {
| // force the "loop" to quit TCP "accept" by closing socket...
| m_Server.close();
| } catch (Exception e) {
| throw new RuntimeException(e);
| }
| try {
| m_Thread.join();
| } catch (InterruptedException e) {
| // demo code, so ignore (but should not in production code)
| }
| closeAll();
| m_Server = null;
| m_Handlers = null;
| m_Thread = null;
| }
|
| void remove(Handler handler) {
| synchronized (m_Handlers) {
| m_Handlers.remove(handler);
| }
| }
|
| private void loop() throws Exception {
| // no need to synchronize as m_Quit is volatile and
| // is acting as a memory synchronization block.
| // (and here we don't need sequencing, just mem sync).
| while (!m_Quit) {
| Socket socket = m_Server.accept();
|
| Handler handler = new Handler(socket, this);
|
| synchronized (m_Handlers) {
| m_Handlers.add(handler);
| }
| handler.start();
| }
| }
|
| private void sleep(int ms) {
| try {
| Thread.sleep(ms);
| } catch (InterruptedException interruptedexception) {
| }
| }
|
| private void closeAll() {
| Handler[] handlers = null;
| synchronized (m_Handlers) {
| handlers = m_Handlers.toArray(new Handler[m_Handlers.size()]);
| }
| for (Handler handler : handlers) {
| try {
| handler.close();
| handler.join();
| } catch (Throwable throwable) {
| }
| }
| }
| }
|
And finally, here is the source for the Handler class:
| /*
| * Filename : Handler.java
| * Version : $Revision: $
| * Date : $Date: $
| * Copyright(c) Ubiquity Software Corporation
| * http://www.ubiquity.net
| */
| package mcfproto.impl;
|
| import java.io.BufferedReader;
| import java.io.IOException;
| import java.io.InputStreamReader;
| import java.io.OutputStreamWriter;
| import java.io.PrintWriter;
| import java.net.Socket;
|
| import org.jboss.logging.Logger;
|
| public class Handler extends Thread {
|
| private final static Logger LOG = Logger.getLogger(Handler.class);
|
| private volatile boolean quit;
|
| private Socket m_Socket;
|
| private PrintWriter m_Writer;
|
| private NetServer m_Parent;
|
| public Handler(Socket socket, NetServer activator) throws Exception {
| m_Socket = socket;
|
| m_Parent = activator;
| m_Writer = new PrintWriter(new OutputStreamWriter(socket
| .getOutputStream()));
| }
|
| void close() {
| try {
| quit = true;
| m_Writer.close();
| m_Socket.close();
| } catch (IOException ioexception) {
| }
| }
|
| public void run() {
| try {
| send("Welcome to Proto. Please enter a command:");
| send("Ex: *[echo msg]");
| send("Ex: quit");
| BufferedReader reader = new BufferedReader(new InputStreamReader(
| m_Socket.getInputStream()));
|
| String line;
| send("\n\r");
| while (!quit && (line = reader.readLine()) != null) {
| process(clean(line));
| }
| send("\n\rbye");
|
| } catch (Exception e) {
| if (quit) {
| LOG.debug(e);
| } else {
| LOG.error(
| "Error whilst handler was trying to process client response.",
| e);
| }
| } finally {
| // TODO: check: need reader.close() ???
| m_Parent.remove(this);
| close();
| m_Socket = null;
| m_Writer = null;
| m_Parent = null;
| }
| return;
| }
|
| private void send(String msg) throws IOException {
| m_Writer.println(msg);
| m_Writer.flush();
| }
|
| private void process(String line) throws IOException {
|
| LOG.debug("Handler:process() method called with \"" + line + "\"");
| if (line.startsWith("quit")) {
| LOG.debug("QUIT command received : (" + line + ")");
| quit = true;
| } else if (line.startsWith("*")) {
| line = line.substring(1, line.length());
| dispatch(line);
| } else {
| send("Unknown command received.");
| }
| }
|
| private void dispatch(String line) throws IOException {
| send(line);
| }
|
| private String clean(String line) {
| int size = line.length();
| char[] buffer = new char[size];
| int out = 0;
| for (int in = 0; in < size; in++) {
| char c = line.charAt(in);
| if (c == '\b') // backspace - ignore
| {
| if (out > 0) {
| out--;
| }
| } else if (c >= ' ' && c < '\177') {
| buffer[out++] = c;
| }
| }
| String cleanedString = new String(buffer, 0, out);
|
| return cleanedString;
| }
|
| }
|
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17 years, 4 months