Forum LAMS for Tech-Heads - General Forum: Re: Re: Re: Re: LAMS blank page issue

Thanks for your ongoing help regarding our issues.

We tried disabling the firewall completely and still have our exporting issue.

When browsing to
http://learning.xavierllandilo.catholic.edu.au/lams/tool/lavote11/exportPortfolio?mod

we get a long error message:

java.lang.IllegalArgumentException: directoryName is required 'null'
java.lang.IllegalArgumentException: directoryName is required 'null' at org.lamsfoundation.lams.util.WebUtil.checkObject(WebUtil.java:107) at org.lamsfoundation.lams.util.WebUtil.readStrParam(WebUtil.java:238) at org.lamsfoundation.lams.util.WebUtil.readStrParam(WebUtil.java:227) at org.lamsfoundation.lams.web.servlet.AbstractExportPortfolioServlet.doGet(AbstractExportPortfolioServlet.java:105) at javax.servlet.http.HttpServlet.service(HttpServlet.java:697) at javax.servlet.http.HttpServlet.service(HttpServlet.java:810) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.lamsfoundation.lams.web.filter.LocaleFilter.doFilterInternal(LocaleFilter.java:142) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:174) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.lamsfoundation.lams.web.session.SystemSessionFilter.doFilter(SystemSessionFilter.java:71) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:153) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.lamsfoundation.lams.integration.security.SingleSignOn.invoke(SingleSignOn.java:121) at org.lamsfoundation.lams.integration.security.LoginRequestValve.invoke(LoginRequestValve.java:67) at org.apache.catalina.valves.FastCommonAccessLogValve.invoke(FastCommonAccessLogValve.java:481) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:307) at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:385) at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:748) at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:678) at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:871) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) at java.lang.Thread.run(Thread.java:619)

Posted by Lachlan Hockings

If we choose to export as IMS it works fine, however they cannot be re imported into LAMS.


Also, we tried exporting on our internal test server running the same version of LAMS, and it worked fine. The differences between our live server and our test one are:
1: Live server is 64bit, where as our test server is 32bit. (Both running CentOS)

2: We access the test server directly via it's IP, where as our live server is through our domain, with all traffic routed via an external firewall. I wonder if this is perhaps playing a part, however why would exporting via ISM work but not normal LAMS format?

Posted by Lachlan Hockings

On the sysadmin menu, go to the Edit configuration settings and see what are the directories you have set up for:

* Temporary Files Directory
* Content Repository Directory
* Flash Dump Files Directory

See if these directories exist in the file system and if the user you are using to run LAMS has write permissions on them.

Thanks,

Ernie

Posted by Ernie Ghiglione

These directories exist and have correct permissions. I don't understand why we can export in one format but not the other.

Anything else we can try?

Posted by Lachlan Hockings

Can you from the shell ping or resolve the learning.xavierllandilo.catholic.edu.au domain?

Ernie

Posted by Ernie Ghiglione

Yes we can.

I should point out however that our server is not directly connected to the web, it's traffic is routed through a central server at another location, so when you browse to learning.xavierllandilo.catholic.edu.au the request is then redirected to our internal server IP.

Sounds like that could be an issue?

Posted by Lachlan Hockings

Yes, I'm pretty certain that would be the issue.

Is this just port forwarding or a proxy?

If this is a proxy, have a look at this options you can set in run.conf:

http://info4tech.wordpress.com/2007/05/04/java-http-proxy-settings/

Thanks,

Ernie

Posted by Ernie Ghiglione

Thanks for all your help Ernie, exporting now works.
I added
JAVA_OPTS="-Dhttp.proxyHost=ourproxyip ..."

to our run.conf and it fixed our issue.

Thanks again.

Posted by Lachlan Hockings