addGeneralComment fails when called outside a HTTP request. e.g. a plugin commit listener

[INFO] 19:43:20 ERROR - Unable to render content due to system error: Context not available, filter already exited
[INFO] java.lang.IllegalStateException: Context not available, filter already exited
[INFO] 	at com.cenqua.crucible.filters.CrucibleFilter.getContext(CrucibleFilter.java:72)
[INFO] 	at com.cenqua.crucible.filters.CrucibleFilter.getSource(CrucibleFilter.java:130)
[INFO] 	at com.cenqua.crucible.tags.UserTextRendererTag.getLinker(UserTextRendererTag.java:72)
[INFO] 	at com.atlassian.crucible.wikirenderer.CrucibleRendererComponent$WikiBridgingUserTextRendererTag.getLinker(CrucibleRendererComponent.java:126)
[INFO] 	at com.cenqua.crucible.tags.UserTextRendererTag.makeRegions(UserTextRendererTag.java:65)
[INFO] 	at com.cenqua.crucible.tags.UserTextRendererTag.doTag(UserTextRendererTag.java:58)
[INFO] 	at com.atlassian.crucible.wikirenderer.CrucibleRendererComponent.render(CrucibleRendererComponent.java:51)
[INFO] 	at com.atlassian.renderer.v2.V2Renderer.render(V2Renderer.java:53)
[INFO] 	at com.atlassian.renderer.v2.V2SubRenderer.render(V2SubRenderer.java:44)
[INFO] 	at com.atlassian.renderer.v2.components.MacroRendererComponent.processMacro(MacroRendererComponent.java:166)
[INFO] 	at com.atlassian.renderer.v2.components.MacroRendererComponent.makeMacro(MacroRendererComponent.java:67)
[INFO] 	at com.atlassian.renderer.v2.components.WikiContentRendererHandler.handleMacro(WikiContentRendererHandler.java:18)
[INFO] 	at com.atlassian.renderer.v2.WikiMarkupParser.makeMacro(WikiMarkupParser.java:120)
[INFO] 	at com.atlassian.renderer.v2.WikiMarkupParser.handlePotentialMacro(WikiMarkupParser.java:100)
[INFO] 	at com.atlassian.renderer.v2.WikiMarkupParser.parse(WikiMarkupParser.java:60)
[INFO] 	at com.atlassian.renderer.v2.components.MacroRendererComponent.render(MacroRendererComponent.java:46)
[INFO] 	at com.atlassian.renderer.v2.V2Renderer.render(V2Renderer.java:53)
[INFO] 	at com.atlassian.renderer.v2.V2RendererFacade.convertWikiToXHtml(V2RendererFacade.java:57)
[INFO] 	at com.atlassian.crucible.wikirenderer.CrucibleWikiRenderer.render(CrucibleWikiRenderer.java:73)
[INFO] 	at com.atlassian.crucible.spi.impl.DefaultReviewService.buildGeneralCommentData(DefaultReviewService.java:1788)
[INFO] 	at com.atlassian.crucible.spi.impl.DefaultReviewService.access$2100(DefaultReviewService.java:89)
[INFO] 	at com.atlassian.crucible.spi.impl.DefaultReviewService$17.doInTransaction(DefaultReviewService.java:1137)
[INFO] 	at com.atlassian.crucible.spi.impl.DefaultReviewService$17.doInTransaction(DefaultReviewService.java:1130)
[INFO] 	at com.atlassian.fisheye.spi.DefaultTxTemplate.execute(DefaultTxTemplate.java:163)
[INFO] 	at com.atlassian.crucible.spi.impl.DefaultReviewService.addGeneralComment(DefaultReviewService.java:1130)
[INFO] 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[INFO] 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[INFO] 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[INFO] 	at java.lang.reflect.Method.invoke(Method.java:597)
[INFO] 	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
[INFO] 	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
[INFO] 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
[INFO] 	at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:77)
[INFO] 	at com.cenqua.crucible.hibernate.WithSessionAspect.doCloseSession(WithSessionAspect.java:37)
[INFO] 	at sun.reflect.GeneratedMethodAccessor129.invoke(Unknown Source)
[INFO] 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[INFO] 	at java.lang.reflect.Method.invoke(Method.java:597)
[INFO] 	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:627)
[INFO] 	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:616)
[INFO] 	at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:64)
[INFO] 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:160)
[INFO] 	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
[INFO] 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
[INFO] 	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
[INFO] 	at $Proxy32.addGeneralComment(Unknown Source)
[INFO] 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[INFO] 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[INFO] 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[INFO] 	at java.lang.reflect.Method.invoke(Method.java:597)
[INFO] 	at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:129)
[INFO] 	at $Proxy74.addGeneralComment(Unknown Source)
[INFO] 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[INFO] 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[INFO] 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[INFO] 	at java.lang.reflect.Method.invoke(Method.java:597)
[INFO] 	at com.atlassian.plugin.osgi.bridge.external.HostComponentFactoryBean$DynamicServiceInvocationHandler.invoke(HostComponentFactoryBean.java:154)
[INFO] 	at $Proxy74.addGeneralComment(Unknown Source)
[INFO] 	at ch.epfl.lamp.crucible.CommitListener$$anon$1$$anon$2.perform(CommitListener.scala:135)