4 Replies Latest reply on Jun 1, 2010 3:56 AM by Daniel Escott

    Classloader, class NOT found and blacklisting.

    Daniel Escott Newbie

      Hi

       

      I'd be grateful if somebody could explain what's happening on my JBoss 6 M1 application? I appear to have a classloader issue from a WAR file when attempting to load a class from an separate EAR/lib jar. The class loader is failing to load a utility class (LDAPLoginModule2.class) when starting the WAR.

       

      This is a ported project from JBoss 4.2.3.GA that happily worked, I'm sure I must have made a mistake or failing to account for changes to the class loader.

       

      Here's the TRACE from the server.log,

       

      2010-05-24 12:21:42,790 TRACE [org.jboss.classloader.spi.base.BaseClassLoader] (http-127.0.0.1-8080-1) BaseClassLoader@182dd60{vfsfile:/C:/jboss-6/server/default/deploy/XitcaOneModules/ApplicationContainer.war/} load from domain com.xitca.security.LDAPLoginModule2 domain=ClassLoaderDomain@19e91fe{vfsfile:/C:/jboss-6/server/default/deploy/XitcaOneModules/ApplicationContainer.war/}
      2010-05-24 12:21:42,790 TRACE [org.jboss.classloader.spi.base.BaseClassLoaderDomain] (http-127.0.0.1-8080-1) ClassLoaderDomain@19e91fe{vfsfile:/C:/jboss-6/server/default/deploy/XitcaOneModules/ApplicationContainer.war/} findLoader com/xitca/security/LDAPLoginModule2.class classLoader=BaseClassLoader@182dd60{vfsfile:/C:/jboss-6/server/default/deploy/XitcaOneModules/ApplicationContainer.war/} allExports=false findInParent=true
      2010-05-24 12:21:42,790 TRACE [org.jboss.classloader.spi.ClassLoaderDomain] (http-127.0.0.1-8080-1) ClassLoaderDomain@19e91fe{vfsfile:/C:/jboss-6/server/default/deploy/XitcaOneModules/ApplicationContainer.war/} com/xitca/security/LDAPLoginModule2.class does NOT match parent beforeFilter=NOTHING_BUT_JAVA
      2010-05-24 12:21:42,791 TRACE [org.jboss.classloader.spi.base.BaseClassLoaderDomain] (http-127.0.0.1-8080-1) ClassLoaderDomain@19e91fe{vfsfile:/C:/jboss-6/server/default/deploy/XitcaOneModules/ApplicationContainer.war/} class is black listed com/xitca/security/LDAPLoginModule2.class
      2010-05-24 12:21:42,791 TRACE [org.jboss.classloader.spi.base.BaseClassLoaderDomain] (http-127.0.0.1-8080-1) ClassLoaderDomain@19e91fe{vfsfile:/C:/jboss-6/server/default/deploy/XitcaOneModules/ApplicationContainer.war/} not loading com/xitca/security/LDAPLoginModule2.class from imports it has no delegates
      2010-05-24 12:21:42,791 TRACE [org.jboss.classloader.spi.base.BaseClassLoaderDomain] (http-127.0.0.1-8080-1) ClassLoaderDomain@19e91fe{vfsfile:/C:/jboss-6/server/default/deploy/XitcaOneModules/ApplicationContainer.war/} trying to load com/xitca/security/LDAPLoginModule2.class from requesting BaseClassLoader@182dd60{vfsfile:/C:/jboss-6/server/default/deploy/XitcaOneModules/ApplicationContainer.war/}
      2010-05-24 12:21:42,791 TRACE [org.jboss.classloader.spi.base.BaseClassLoader] (http-127.0.0.1-8080-1) BaseClassLoader@182dd60{vfsfile:/C:/jboss-6/server/default/deploy/XitcaOneModules/ApplicationContainer.war/} get resource locally com/xitca/security/LDAPLoginModule2.class
      2010-05-24 12:21:42,791 TRACE [org.jboss.classloader.spi.base.BaseClassLoader] (http-127.0.0.1-8080-1) BaseClassLoader@182dd60{vfsfile:/C:/jboss-6/server/default/deploy/XitcaOneModules/ApplicationContainer.war/} resource is blacklisted com/xitca/security/LDAPLoginModule2.class
      2010-05-24 12:21:42,791 TRACE [org.jboss.classloader.spi.ClassLoaderDomain] (http-127.0.0.1-8080-1) ClassLoaderDomain@19e91fe{vfsfile:/C:/jboss-6/server/default/deploy/XitcaOneModules/ApplicationContainer.war/} com/xitca/security/LDAPLoginModule2.class matches parent afterFilter=<EVERYTHING>
      2010-05-24 12:21:42,791 TRACE [org.jboss.classloader.spi.ClassLoaderDomain] (http-127.0.0.1-8080-1) ClassLoaderDomain@19e91fe{vfsfile:/C:/jboss-6/server/default/deploy/XitcaOneModules/ApplicationContainer.war/} load from parent com/xitca/security/LDAPLoginModule2.class parent=ClassLoaderDomain@1dfd90f{DefaultDomain}
      2010-05-24 12:21:42,791 TRACE [org.jboss.classloader.spi.base.BaseClassLoaderDomain] (http-127.0.0.1-8080-1) ClassLoaderDomain@1dfd90f{DefaultDomain} findLoader com/xitca/security/LDAPLoginModule2.class classLoader=null allExports=true findInParent=true
      2010-05-24 12:21:42,791 TRACE [org.jboss.classloader.spi.ClassLoaderDomain] (http-127.0.0.1-8080-1) ClassLoaderDomain@1dfd90f{DefaultDomain} com/xitca/security/LDAPLoginModule2.class matches parent beforeFilter=<EVERYTHING>
      2010-05-24 12:21:42,791 TRACE [org.jboss.classloader.spi.ClassLoaderDomain] (http-127.0.0.1-8080-1) ClassLoaderDomain@1dfd90f{DefaultDomain} load from parent com/xitca/security/LDAPLoginModule2.class parent=java.net.URLClassLoader@e5855a
      2010-05-24 12:21:42,791 TRACE [org.jboss.classloader.plugins.loader.ClassLoaderToLoaderAdapter] (http-127.0.0.1-8080-1) Resource com/xitca/security/LDAPLoginModule2.class NOT found in java.net.URLClassLoader@e5855a
      2010-05-24 12:21:42,791 TRACE [org.jboss.classloader.spi.base.BaseClassLoaderDomain] (http-127.0.0.1-8080-1) ClassLoaderDomain@1dfd90f{DefaultDomain} class is black listed com/xitca/security/LDAPLoginModule2.class
      2010-05-24 12:21:42,791 TRACE [org.jboss.classloader.spi.ClassLoaderDomain] (http-127.0.0.1-8080-1) ClassLoaderDomain@1dfd90f{DefaultDomain} com/xitca/security/LDAPLoginModule2.class does NOT match parent afterFilter=<NOTHING>
      2010-05-24 12:21:42,791 TRACE [org.jboss.classloader.spi.base.BaseClassLoaderDomain] (http-127.0.0.1-8080-1) ClassLoaderDomain@19e91fe{vfsfile:/C:/jboss-6/server/default/deploy/XitcaOneModules/ApplicationContainer.war/} trying to load com.xitca.security.LDAPLoginModule2 using hack sun.misc.Launcher$AppClassLoader@1ba34f2
      2010-05-24 12:21:42,791 TRACE [org.jboss.classloader.spi.base.BaseClassLoader] (http-127.0.0.1-8080-1) BaseClassLoader@182dd60{vfsfile:/C:/jboss-6/server/default/deploy/XitcaOneModules/ApplicationContainer.war/} unlock Thread[http-127.0.0.1-8080-1,5,jboss] holding=1
      2010-05-24 12:21:42,792 TRACE [org.jboss.detailed.classloader.ClassLoaderManager] (http-127.0.0.1-8080-1) unregisterLoaderThread, classloader=BaseClassLoader@182dd60{vfsfile:/C:/jboss-6/server/default/deploy/XitcaOneModules/ApplicationContainer.war/} thread=Thread[http-127.0.0.1-8080-1,5,jboss] rescheduleTasks=true
      2010-05-24 12:21:42,792 TRACE [org.jboss.security.plugins.auth.JaasSecurityManagerBase.XitcaOne] (http-127.0.0.1-8080-1) Login failure
      javax.security.auth.login.LoginException: unable to find LoginModule class: com.xitca.security.LDAPLoginModule2
          at javax.security.auth.login.LoginContext.invoke(Unknown Source)
          at javax.security.auth.login.LoginContext.access$000(Unknown Source)
          at javax.security.auth.login.LoginContext$4.run(Unknown Source)
          at java.security.AccessController.doPrivileged(Native Method)
          at javax.security.auth.login.LoginContext.invokePriv(Unknown Source)
          at javax.security.auth.login.LoginContext.login(Unknown Source)
          at org.jboss.security.plugins.auth.JaasSecurityManagerBase.defaultLogin(JaasSecurityManagerBase.java:553)
          at org.jboss.security.plugins.auth.JaasSecurityManagerBase.authenticate(JaasSecurityManagerBase.java:487)
          at org.jboss.security.plugins.auth.JaasSecurityManagerBase.isValid(JaasSecurityManagerBase.java:365)
          at org.jboss.security.plugins.JaasSecurityManager.isValid(JaasSecurityManager.java:160)
          at org.jboss.web.tomcat.security.JBossWebRealm.authenticate(JBossWebRealm.java:385)
          at org.apache.catalina.authenticator.BasicAuthenticator.authenticate(BasicAuthenticator.java:181)
          at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:491)
          at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:95)
          at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
          at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
          at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
          at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
          at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
          at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
          at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
          at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
          at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
          at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
          at java.lang.Thread.run(Unknown Source)
      2010-05-24 12:21:42,792 TRACE [org.jboss.security.plugins.auth.JaasSecurityManagerBase.XitcaOne] (http-127.0.0.1-8080-1) End isValid, false
      2010-05-24 12:21:42,792 TRACE [org.jboss.web.tomcat.security.JBossWebRealm] (http-127.0.0.1-8080-1) User:  is NOT authenticated
      2010-05-24 12:21:42,792 TRACE [org.jboss.web.tomcat.security.JBossWebRealm] (http-127.0.0.1-8080-1) End authenticate, principal=null
      2010-05-24 12:21:42,792 TRACE [org.jboss.security.SecurityRolesAssociation] (http-127.0.0.1-8080-1) Setting threadlocal:null
      2010-05-24 12:21:42,793 TRACE [org.jboss.security.SecurityRolesAssociation] (http-127.0.0.1-8080-1) Setting threadlocal:nul
      

       

      The WAR file is located at %JBOSS_HOME%/server/default/deploy/XitcaOneModules/ApplicationContainer.war, it looks like this:

       

      META-INF
          MANIFEST.MF
      WEB-INF
          context.xml
          jboss-web.xml
          web.xml
      splashscreen.jpg
      AC_OETags.js
      application.ico
      ApplicationContainer.html
      ApplicationContainer.swf
      ApplicationContainerStyles.swf
      ClientNexus.swf
      history.htm
      history.js
      history.swf
      nexus.js
      playerProductInstall.swf
      

       

      The ApplicationContainer.war file contains the following jboss-web.xml

       

      <?xml version="1.0" encoding="UTF-8"?>
      <jboss-web>
        <security-domain>java:/jaas/XitcaOne</security-domain>
        <context-root>XitcaOne</context-root>
      </jboss-web>
      

       

      The EAR/lib/Security.jar (which contains the LDAPLoginModule2.java) is located at %JBOSS_HOME%/server/default/deploy/XitcaOne.EAR, it looks like this:

       

      META-INF/
      META-INF/MANIFEST.MF
      META-INF/application.xml
      META-INF/jboss-app.xml
      OracleQueue.sar
      NOSProcessListener.sar
      TS.jar
      US.jar
      EV.jar
      WMS.jar
      ojdbc14.jar
      lib/
      lib/General.jar
      lib/Security.jar
      

       

      The XitcaOne.EAR/META-INF/jboss-app.xml looks like:

       

      <?xml version='1.0' encoding='UTF-8' ?>
      <jboss-app>
          <module-order>strict</module-order>
          <security-domain>java:/jaas/XitcaOne</security-domain>    
          <module><service>OracleQueue.sar</service></module>
          <module><service>NOSProcessListener.sar</service></module>
      </jboss-app>
      

       

      Am I missing some kind of loader xml block in the jboss-web.xml or configuration to resolve the right class loader?

       

      Many thanks for any help given.

       

      Kind Regards

      Dan Escott.