Grouper Users - Open Discussion List

["GW Brown, Information Systems and Computing" <>]

Hi Karsten,

The error is probably occurring in 
edu.internet2.middleware.grouper.ui.actions.PrepareStemsAction. One 
possibility is that the UI cannot determine the root node. Have you set 
default.browse.stem? If you have, the stem defined must exist - the full 
name is looked up.

I would normally debug the webapp - I start Tomcat with JPDA and connect 
remotely using Eclipse, and catch NullPointerExceptions in any of the 
grouper.ui packages.

If your database is HSQLDB, or you have a script which will recreate your 
database, you can send it to me and I can try and debug it.

You can also try adding debug statements in PrepareStemsAction. I will aim 
to put better error handling in this class for 0.9

I'll have a look at logging and see what happens for me.

Gary

--On 26 October 2005 11:39 -0400 Karsten Huneycutt 
<>
 wrote:

> Hello --
>
> I'm trying to install the Grouper UI here at Duke on top of an  existing
> Grouper 0.6 installation, and I'm running into trouble.   Here's the
> exception I'm getting:
>
> ---- BEGIN ----
>
> An error has occurred which prevented the page from displaying. If  the
> problem persists please contact your system administrator with  the
> details below:
>
>
> javax.servlet.jsp.JspException: ServletException in '/WEB-INF/jsp/
> content.jsp': ServletException in '/WEB-INF/jsp/MyGroups.jsp':
> ServletException in '/WEB-INF/jsp/browseStems.jsp': null at
> org.apache.struts.taglib.tiles.InsertTag$InsertHandler.doEndTag
> (InsertTag.java:921) at
> org.apache.struts.taglib.tiles.InsertTag.doEndTag(InsertTag.java:460)  at
> org.apache.jsp.template_jsp._jspx_meth_tiles_insert_4
> (template_jsp.java:418) at org.apache.jsp.template_jsp._jspService
> (template_jsp.java:137) at
> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:137)  at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at
> org.apache.jasper.servlet.JspServletWrapper.service
> (JspServletWrapper.java:210) at
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java: 295)
> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java: 241) at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:853)  at
> org.apache.catalina.core.ApplicationDispatcher.invoke
> (ApplicationDispatcher.java:684) at
> org.apache.catalina.core.ApplicationDispatcher.doForward
> (ApplicationDispatcher.java:432) at
> org.apache.catalina.core.ApplicationDispatcher.forward
> (ApplicationDispatcher.java:356) at
> org.apache.struts.action.RequestProcessor.doForward
> (RequestProcessor.java:1056) at
> org.apache.struts.tiles.TilesRequestProcessor.doForward
> (TilesRequestProcessor.java:270) at
> org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition
> (TilesRequestProcessor.java:250) at
> org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig
> (TilesRequestProcessor.java:304) at
> org.apache.struts.action.RequestProcessor.process
> (RequestProcessor.java:231) at
> org.apache.struts.action.ActionServlet.process(ActionServlet.java: 1164)
> at org.apache.struts.action.ActionServlet.doGet (ActionServlet.java:397)
> at javax.servlet.http.HttpServlet.service (HttpServlet.java:740) at
> javax.servlet.http.HttpServlet.service (HttpServlet.java:853) at
> org.apache.catalina.core.ApplicationDispatcher.invoke
> (ApplicationDispatcher.java:684) at
> org.apache.catalina.core.ApplicationDispatcher.doForward
> (ApplicationDispatcher.java:432) at
> org.apache.catalina.core.ApplicationDispatcher.forward
> (ApplicationDispatcher.java:356) at
> org.apache.struts.action.RequestProcessor.doForward
> (RequestProcessor.java:1056) at
> org.apache.struts.tiles.TilesRequestProcessor.doForward
> (TilesRequestProcessor.java:270) at
> org.apache.struts.action.RequestProcessor.processForwardConfig
> (RequestProcessor.java:388) at
> org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig
> (TilesRequestProcessor.java:313) at
> org.apache.struts.action.RequestProcessor.process
> (RequestProcessor.java:231) at
> org.apache.struts.action.ActionServlet.process(ActionServlet.java: 1164)
> at org.apache.struts.action.ActionServlet.doGet (ActionServlet.java:397)
> at javax.servlet.http.HttpServlet.service (HttpServlet.java:740) at
> javax.servlet.http.HttpServlet.service (HttpServlet.java:853) at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
> (ApplicationFilterChain.java:247) at
> org.apache.catalina.core.ApplicationFilterChain.doFilter
> (ApplicationFilterChain.java:193) at
> edu.internet2.middleware.grouper.ui.LoginCheckFilter.doFilter
> (LoginCheckFilter.java:190) at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
> (ApplicationFilterChain.java:213) at
> org.apache.catalina.core.ApplicationFilterChain.doFilter
> (ApplicationFilterChain.java:193) at
> org.apache.catalina.core.StandardWrapperValve.invoke
> (StandardWrapperValve.java:256) at
> org.apache.catalina.core.StandardPipeline
> $StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)  at
> org.apache.catalina.core.StandardPipeline.invoke
> (StandardPipeline.java:480) at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)  at
> org.apache.catalina.core.StandardContextValve.invoke
> (StandardContextValve.java:191) at
> org.apache.catalina.core.StandardPipeline
> $StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)  at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke
> (AuthenticatorBase.java:494) at
> org.apache.catalina.core.StandardPipeline
> $StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)  at
> org.apache.catalina.core.StandardPipeline.invoke
> (StandardPipeline.java:480) at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)  at
> org.apache.catalina.core.StandardContext.invoke
> (StandardContext.java:2416) at
> org.apache.catalina.core.StandardHostValve.invoke
> (StandardHostValve.java:180) at
> org.apache.catalina.core.StandardPipeline
> $StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)  at
> org.apache.catalina.valves.ErrorDispatcherValve.invoke
> (ErrorDispatcherValve.java:171) at
> org.apache.catalina.core.StandardPipeline
> $StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)  at
> org.apache.catalina.valves.ErrorReportValve.invoke
> (ErrorReportValve.java:172) at  org.apache.catalina.core.StandardPipeline
> $StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)  at
> org.apache.catalina.core.StandardPipeline.invoke
> (StandardPipeline.java:480) at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)  at
> org.apache.catalina.core.StandardEngineValve.invoke
> (StandardEngineValve.java:174) at
> org.apache.catalina.core.StandardPipeline
> $StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)  at
> org.apache.catalina.core.StandardPipeline.invoke
> (StandardPipeline.java:480) at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)  at
> org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java: 223)
> at org.apache.coyote.http11.Http11Processor.process
> (Http11Processor.java:601) at org.apache.coyote.http11.Http11Protocol
> $Http11ConnectionHandler.processConnection(Http11Protocol.java:392)  at
> org.apache.tomcat.util.net.TcpWorkerThread.runIt
> (PoolTcpEndpoint.java:565) at
> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run
> (ThreadPool.java:619) at java.lang.Thread.run(Thread.java:534)
>
> ---- END ----
>
> This exception happens immediately after the LoginFilter returns
> (successfully!).
>
> First, of course we wrote Duke-specific Subject and Source
> implementations.  These work in our other standalone programs, so I'm
> pretty sure it's not a problem with that.   I've integrated our NetID
> web authentication system into the UI via our Tomcat authentication
> Valve, and I've verified (using "System.err.println
> (request.getRemoteUser())" strategically placed in MyGroups.jsp,  along
> with setting swallowOutput to false in the context) that the UI  code is
> getting the appropriate NetID.  The Duke Source uses our Duke  Unique ID
> as the SubjectID, and getSubjectByIdentifier expects a Duke  NetID.  I've
> set my classpath to include all the JAR files in webapps/
> grouper/WEB-INF/lib and webapps/grouper/WEB-INF/classes, and I've
> verified using groupmgr and grouperq that the configuration files and
> libraries are correct, sufficient and functional.
>
> For reference, I'm using tomcat 4.1.27 on Solaris 9 with Java 1.4.2_04.
>
> Oddly, I'm not seeing any output from Subject/Source interactions in  my
> log file, even though I have the following lines in log4j.properties:
>
> log4j.logger.edu.internet2.middleware.subject           = DEBUG, rfile
> log4j.logger.edu.internet2.middleware.subject.provider  = DEBUG, rfile
> log4j.logger.edu.duke.oit.idms.groupreg.grouper.GroupManager =  DEBUG,
> rfile
> log4j.logger.edu.duke.oit.idms.groupreg.grouper.DukeSubject = DEBUG,
> rfile
> log4j.logger.edu.duke.oit.idms.groupreg.grouper.DukeSubjectAdapter =
> DEBUG,  rfile
>
> But, I'm not getting the exception I'd expect were there difficulties
> with the subject interaction...
>
> Any pointers on where to look next?
>
> Thanks!
>
> KH
>
> --
> Karsten Huneycutt



----------------------
GW Brown, Information Systems and Computing