Details
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Bug
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Resolution: Fixed
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Medium
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2.6-dr1, 2.6.0
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CAC
Description
This problem is raised from the support issue - https://support.atlassian.com/browse/CSP-11863
The initial problem was a failure during PDF export which looked like -
2007-10-03 21:26:09,006 ERROR [Export Space task] [core.task.longrunning.AbstractLongRunningTask] doInTransactionWithoutResult
Error during export
-- url: /spaces/doexportspace.action | userName: pcurren | action: doexportspace
com.atlassian.confluence.importexport.ImportExportException: java.lang.NullPointerException
at com.atlassian.confluence.importexport.impl.PdfExporter.generateXslFo(PdfExporter.java:178)
at com.atlassian.confluence.importexport.impl.PdfExporter.doExportEntity(PdfExporter.java:97)
at com.atlassian.confluence.importexport.impl.AbstractRendererExporterImpl.exportSpace(AbstractRendererExporterImpl.java:127)
at com.atlassian.confluence.importexport.impl.AbstractRendererExporterImpl.doExport(AbstractRendererExporterImpl.java:109)
at com.atlassian.confluence.importexport.impl.PdfExporter.doExport(PdfExporter.java:63)
at com.atlassian.confluence.importexport.DefaultImportExportManager.exportAs(DefaultImportExportManager.java:112)
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.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:287)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:181)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:148)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:170)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:176)
at $Proxy49.exportAs(Unknown Source)
at com.atlassian.confluence.importexport.actions.ExportSpaceLongRunningTask$2.doInTransactionWithoutResult(ExportSpaceLongRunningTask.java:8
5)
at org.springframework.transaction.support.TransactionCallbackWithoutResult.doInTransaction(TransactionCallbackWithoutResult.java:33)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:114)
at com.atlassian.confluence.importexport.actions.ExportSpaceLongRunningTask.runInternal(ExportSpaceLongRunningTask.java:61)
at com.atlassian.confluence.util.longrunning.ConfluenceAbstractLongRunningTask.run(ConfluenceAbstractLongRunningTask.java:21)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.NullPointerException
at com.caucho.server.connection.AbstractHttpRequest.getContextPath(AbstractHttpRequest.java:506)
at javax.servlet.http.HttpServletRequestWrapper.getContextPath(HttpServletRequestWrapper.java:108)
at javax.servlet.http.HttpServletRequestWrapper.getContextPath(HttpServletRequestWrapper.java:108)
at javax.servlet.http.HttpServletRequestWrapper.getContextPath(HttpServletRequestWrapper.java:108)
at javax.servlet.http.HttpServletRequestWrapper.getContextPath(HttpServletRequestWrapper.java:108)
at javax.servlet.http.HttpServletRequestWrapper.getContextPath(HttpServletRequestWrapper.java:108)
at com.caucho.server.webapp.RequestDispatcherImpl.include(RequestDispatcherImpl.java:403)
at com.caucho.server.webapp.RequestDispatcherImpl.include(RequestDispatcherImpl.java:350)
at com.atlassian.confluence.importexport.impl.AbstractRendererExporterImpl.exportResource(AbstractRendererExporterImpl.java:208)
at com.atlassian.confluence.importexport.impl.AbstractRendererExporterImpl.exportImages(AbstractRendererExporterImpl.java:151)
at com.atlassian.confluence.importexport.impl.PdfExporter.generateXslFo(PdfExporter.java:174)
... 22 more
This is due to the HttpServletRequest instance being stored within the ThreadLocal and accessed by the LongRunningTask thread as it performed the export. When resin returns the HttpServletRequest to the pool some internal details are nulled (such as the context).
This was worked around by wrapping the request in a compatible class which takes a copy of the necessary data.
The ServletContextHoldingRequest also needed to be modified. It was returning an HttpSession instance anonymous class which resin was later trying to cast to it's own SessionImpl class. (ServletContextHoldingRequest was modified to hold the HttpSession instance from the real request.)
Once this was all hacked around, a new problem was being exposed -
2007-10-08 13:26:57,004 ERROR [Export Space task] [core.task.longrunning.AbstractLongRunningTask] doInTransactionWithoutResult Error during export
-- url: /spaces/doexportspace.action | userName: pcurren | action: doexportspace
com.atlassian.confluence.importexport.ImportExportException: Error while generating PDF!
at com.atlassian.confluence.importexport.impl.PdfExporter.foToPdf(PdfExporter.java:137)
at com.atlassian.confluence.importexport.impl.PdfExporter.doExportEntity(PdfExporter.java:98)
at com.atlassian.confluence.importexport.impl.AbstractRendererExporterImpl.exportSpace(AbstractRendererExporterImpl.java:127)
at com.atlassian.confluence.importexport.impl.AbstractRendererExporterImpl.doExport(AbstractRendererExporterImpl.java:109)
at com.atlassian.confluence.importexport.impl.PdfExporter.doExport(PdfExporter.java:63)
at com.atlassian.confluence.importexport.DefaultImportExportManager.exportAs(DefaultImportExportManager.java:112)
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:585)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:287)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:181)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:148)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:170)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:176)
at $Proxy49.exportAs(Unknown Source)
at com.atlassian.confluence.importexport.actions.ExportSpaceLongRunningTask$2.doInTransactionWithoutResult(ExportSpaceLongRunningTask.java:87)
at org.springframework.transaction.support.TransactionCallbackWithoutResult.doInTransaction(TransactionCallbackWithoutResult.java:33)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:114)
at com.atlassian.confluence.importexport.actions.ExportSpaceLongRunningTask.runInternal(ExportSpaceLongRunningTask.java:63)
at com.atlassian.confluence.util.longrunning.ConfluenceAbstractLongRunningTask.run(ConfluenceAbstractLongRunningTask.java:21)
at java.lang.Thread.run(Thread.java:613)
Caused by: javax.xml.transform.TransformerException: org.apache.fop.fo.ValidationException: file:///Users/pcurren/Atlassian/data/confluence/cac/temp/export_10082007_131342/CONF256-20071008-13_13_42.fo:16961:0: Error(16961/0): fo:list-block is missing child elements.
Required Content Model: marker* (list-item)+
at com.icl.saxon.IdentityTransformer.transform(IdentityTransformer.java:61)
at com.atlassian.confluence.importexport.impl.PdfExporter.foToPdf(PdfExporter.java:132)
... 22 more
Caused by: org.apache.fop.fo.ValidationException: file:///Users/pcurren/Atlassian/data/confluence/cac/temp/export_10082007_131342/CONF256-20071008-13_13_42.fo:16961:0: Error(16961/0): fo:list-block is missing child elements.
Required Content Model: marker* (list-item)+
at org.apache.fop.fo.FONode.missingChildElementError(FONode.java:408)
at org.apache.fop.fo.flow.ListBlock.endOfNode(ListBlock.java:105)
at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:379)
at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:195)
at com.caucho.xml.XmlParser.addElement(XmlParser.java:2608)
at com.caucho.xml.XmlParser.parseElement(XmlParser.java:641)
at com.caucho.xml.XmlParser.parseNode(XmlParser.java:367)
at com.caucho.xml.XmlParser.parseInt(XmlParser.java:242)
at com.caucho.xml.AbstractParser.parse(AbstractParser.java:633)
at com.icl.saxon.IdentityTransformer.transform(IdentityTransformer.java:59)
... 23 more
At this point, I've decided to resolved the support request in a different way, and gift these three problems to the bug fix team 
Attachments
Issue Links
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CLOV-56 Upload Clover 2.0 docs in PDF, XML & HTML formats
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