[Building Sakai] A wicket state of affairs

Stephen Marquard stephen.marquard at uct.ac.za
Mon Dec 13 09:55:49 PST 2010 

Hi all,

SiteStats (the version in 2.7) is prone to throwing errors like this,
particularly on larger sites.

Could anyone familiar with the internals of Wicket explain what this
means? Is there some sort of internal Wicket tool state? I thought tool
state was no longer cool?

Cheers
Stephen

stack trace:

org.sakaiproject.portal.api.PortalHandlerException:
org.apache.wicket.WicketRuntimeException: After 1 minute the Pagemap
null is still locked by: Thread[TP-Processor29,5,main], giving up trying
to get the page for path:
2:activityWidget:widget:middle:widgetTabs:tabs:0:link
    at
org.sakaiproject.portal.charon.SkinnableCharonPortal.doGet(SkinnableCharonPortal.java:835)
caused by: org.apache.wicket.WicketRuntimeException: After 1 minute the
Pagemap null is still locked by: Thread[TP-Processor29,5,main], giving
up trying to get the page for path:
2:activityWidget:widget:middle:widgetTabs:tabs:0:link
    at org.apache.wicket.Session.getPage(Session.java:739)
    at
org.apache.wicket.request.AbstractRequestCycleProcessor.resolveRenderedPage(AbstractRequestCycleProcessor.java:448)
    at
org.apache.wicket.protocol.http.WebRequestCycleProcessor.resolve(WebRequestCycleProcessor.java:139)
    at org.apache.wicket.RequestCycle.step(RequestCycle.java:1297)
    at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1418)
    at org.apache.wicket.RequestCycle.request(RequestCycle.java:532)
    at
org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:356)
    at
org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:124)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
    at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
    at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:659)
    at
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:457)
    at
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:359)
    at
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:311)
    at
org.sakaiproject.tool.impl.ActiveToolComponent$MyActiveTool.forward(ActiveToolComponent.java:512)
    at
org.sakaiproject.portal.charon.SkinnableCharonPortal.forwardTool(SkinnableCharonPortal.java:1299)
    at
org.sakaiproject.portal.charon.handlers.ToolHandler.doTool(ToolHandler.java:204)
    at
org.sakaiproject.portal.charon.handlers.ToolHandler.doGet(ToolHandler.java:96)
    at
org.sakaiproject.portal.charon.SkinnableCharonPortal.doGet(SkinnableCharonPortal.java:835)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
    at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
    at
org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:646)
    at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
    at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
    at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
    at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
    at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
    at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
    at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
    at
org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)
    at
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
    at
org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:775)
    at
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:704)
    at
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:897)
    at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
    at java.lang.Thread.run(Thread.java:662)


Tool Placement:
No Placement


Request:
:    AuthType:null
:    CharEncoding:UTF-8
:    ContentLength:0
:    ContentType:null
:    ContextPath:/portal
:    LocalAddress:null
:    LocalName:vula.uct.ac.za
:    LocalPort:443
:    Method:GET
:    PathInfo:/tool/1c55e791-22b6-47ec-a958-36bfa07d9540/
:    Protocol:HTTP/1.1
:   
QueryString:wicket:interface=:2:activityWidget:widget:middle:widgetTabs:tabs:0:link::IBehaviorListener:0:3&random=0.015436431160196662
:    RemoteAddress:41.185.111.55
:    RemoteHost:41.185.111.55
:    RemotePort:-1
:    Requested
URL:https://vula.uct.ac.za/portal/tool/1c55e791-22b6-47ec-a958-36bfa07d9540/
:    Scheme:https
:    ServerName:vula.uct.ac.za
:    Headers:
:        Header:host:vula.uct.ac.za
:        Header:connection:keep-alive
:       
Header:referer:https://vula.uct.ac.za/portal/tool/1c55e791-22b6-47ec-a958-36bfa07d9540/home/panel/Main/
:        Header:Wicket-Ajax:true
:        Header:accept:text/xml
:        Header:user-agent:Mozilla/5.0 (Windows; U; Windows NT 6.1;
en-US) AppleWebKit/534.10 (KHTML, like Gecko) Chrome/8.0.552.215
Safari/534.10
:        Header:Accept-Encoding:gzip,deflate,sdch
:        Header:Accept-Language:en-US,en;q=0.8
:        Header:Accept-Charset:ISO-8859-1,utf-8;q=0.7,*;q=0.3
:        Header:cookie:---censored---
:        Header:content-length:0
:    Parameters:
:       
Parameter:wicket:interface:0::2:activityWidget:widget:middle:widgetTabs:tabs:0:link::IBehaviorListener:0:3
:        Parameter:random:0:0.015436431160196662
:    Attributes:
:        Attribute:sakai.html.head.css.skin:<link
href="/library/skin/default/tool.css" type="text/css" rel="stylesheet"
media="all" />

:        Attribute:sakai.html.head.js:<script type="text/javascript"
language="JavaScript" src="/library/js/headscripts.js"></script>

:       
Attribute:sakai.character.encoding.done:sakai.character.encoding.done
:       
Attribute:tool.url.manager:org.sakaiproject.portal.util.ToolURLManagerImpl at 2ccf5a93
:       
Attribute:sakai.html.body.onload:setMainFrameHeight('Main1c55e791x22b6x47ecxa958x36bfa07d9540');setFocus(focus_path);
:        Attribute:sakai.html.head:<link
href="/library/skin/tool_base.css" type="text/css" rel="stylesheet"
media="all" />
<link href="/library/skin/default/tool.css" type="text/css"
rel="stylesheet" media="all" />
<script type="text/javascript" language="JavaScript"
src="/library/js/headscripts.js"></script>

:        Attribute:sakai.filtered:sakai.filtered
:        Attribute:sakai.html.head.css.base:<link
href="/library/skin/tool_base.css" type="text/css" rel="stylesheet"
media="all" />

:        Attribute:sakai.html.head.css:<link
href="/library/skin/tool_base.css" type="text/css" rel="stylesheet"
media="all" />
<link href="/library/skin/default/tool.css" type="text/css"
rel="stylesheet" media="all" />

:       
Attribute:sakai.session:org.sakaiproject.tool.impl.MySession at ca8b09e3
Session:
:    Created:1292248050843
:    LastAccess:1292248462468
:    MaxInactive:3600
:    Attributes:
:        Attribute:portalskin:defaultskin





-- 
Stephen Marquard, Learning Technologies Co-ordinator
Centre for Educational Technology, University of Cape Town
http://www.cet.uct.ac.za
Email / IM (Jabber/XMPP): stephen.marquard at uct.ac.za
Phone: +27-21-650-5037 Cell: +27-83-500-5290 



 

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