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Classloading problems with latest Eclipse Modelling Tools Eclipse and Mylyn #373

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HannesWell opened this issue Jan 26, 2024 · 10 comments
Open

Classloading problems with latest Eclipse Modelling Tools Eclipse and Mylyn #373

HannesWell opened this issue Jan 26, 2024 · 10 comments

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@HannesWell
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In a Eclipse Modelling Tools product (which includes Mylyn) updated to the latest milestone I frequently get the following errors, which also break the content assist.
Looking at the large stacktrace below it originates at:

	at org.apache.commons.httpclient.params.DefaultHttpParams.<clinit>(DefaultHttpParams.java:54)
	at org.eclipse.mylyn.commons.net.WebUtil.<clinit>(WebUtil.java:142)
	at org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin.start(TasksUiPlugin.java:492)

Full stack-trace:

org.eclipse.core.runtime.CoreException: Plug-in org.eclipse.mylyn.tasks.ui was unable to load class org.eclipse.mylyn.internal.tasks.ui.editors.TaskUrlHyperlinkDetector.
	at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:242)
	at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:225)
	at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:987)
	at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:255)
	at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:65)
	at org.eclipse.ui.texteditor.HyperlinkDetectorDescriptor$1.run(HyperlinkDetectorDescriptor.java:116)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.ui.texteditor.HyperlinkDetectorDescriptor.createHyperlinkDetectorImplementation(HyperlinkDetectorDescriptor.java:126)
	at org.eclipse.ui.texteditor.HyperlinkDetectorRegistry$HyperlinkDetectorDelegate.detectHyperlinks(HyperlinkDetectorRegistry.java:73)
	at org.eclipse.egit.ui.internal.dialogs.HyperlinkSourceViewer$InternalHyperlinkDetector.detectHyperlinks(HyperlinkSourceViewer.java:522)
	at org.eclipse.egit.ui.internal.dialogs.HyperlinkTokenScanner.nextToken(HyperlinkTokenScanner.java:176)
	at org.eclipse.jface.text.rules.DefaultDamagerRepairer.createPresentation(DefaultDamagerRepairer.java:179)
	at org.eclipse.jface.text.presentation.PresentationReconciler.createPresentation(PresentationReconciler.java:436)
	at org.eclipse.jface.text.presentation.PresentationReconciler.processDamage(PresentationReconciler.java:549)
	at org.eclipse.jface.text.presentation.PresentationReconciler$InternalListener.inputDocumentChanged(PresentationReconciler.java:121)
	at org.eclipse.jface.text.TextViewer.fireInputDocumentChanged(TextViewer.java:2849)
	at org.eclipse.jface.text.TextViewer.setDocument(TextViewer.java:2890)
	at org.eclipse.jface.text.source.SourceViewer.setDocument(SourceViewer.java:682)
	at org.eclipse.jface.text.source.projection.ProjectionViewer.setDocument(ProjectionViewer.java:368)
	at org.eclipse.jface.text.source.SourceViewer.setDocument(SourceViewer.java:622)
	at org.eclipse.egit.ui.internal.history.CommitMessageViewer.applyFormatJobResultInUI(CommitMessageViewer.java:363)
	at org.eclipse.egit.ui.internal.history.CommitMessageViewer$5$1.run(CommitMessageViewer.java:236)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:132)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4046)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3662)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1152)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1043)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:152)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:648)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:555)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:152)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:208)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:136)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:402)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:651)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:588)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1459)
Caused by: java.lang.ClassNotFoundException: An error occurred while automatically activating bundle org.eclipse.mylyn.tasks.ui (4781).
	at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:126)
	at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:569)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:334)
	at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:396)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass0(BundleLoader.java:499)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:415)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:167)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
	at org.eclipse.osgi.internal.framework.EquinoxBundle.loadClass(EquinoxBundle.java:622)
	at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:223)
	at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:987)
	at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:255)
	at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:65)
	at org.eclipse.core.internal.expressions.PropertyTesterDescriptor.instantiate(PropertyTesterDescriptor.java:99)
	at org.eclipse.core.internal.expressions.TypeExtension.findTypeExtender(TypeExtension.java:99)
	at org.eclipse.core.internal.expressions.TypeExtension.findTypeExtender(TypeExtension.java:131)
	at org.eclipse.core.internal.expressions.TypeExtension.findTypeExtender(TypeExtension.java:131)
	at org.eclipse.core.internal.expressions.TypeExtension.findTypeExtender(TypeExtension.java:131)
	at org.eclipse.core.internal.expressions.TypeExtensionManager.getProperty(TypeExtensionManager.java:124)
	at org.eclipse.core.expressions.TestExpression.evaluate(TestExpression.java:104)
	at org.eclipse.e4.ui.internal.workbench.ContributionsAnalyzer.isCoreExpressionVisible(ContributionsAnalyzer.java:281)
	at org.eclipse.e4.ui.internal.workbench.ContributionsAnalyzer.isVisible(ContributionsAnalyzer.java:255)
	at org.eclipse.e4.ui.workbench.renderers.swt.ToolBarContributionRecord.computeVisibility(ToolBarContributionRecord.java:163)
	at org.eclipse.e4.ui.workbench.renderers.swt.ToolBarContributionRecord.updateVisibility(ToolBarContributionRecord.java:77)
	at org.eclipse.e4.ui.workbench.renderers.swt.ToolBarManagerRenderer$2.changed(ToolBarManagerRenderer.java:513)
	at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:105)
	at org.eclipse.e4.core.internal.contexts.EclipseContext.runAndTrack(EclipseContext.java:340)
	at org.eclipse.e4.ui.workbench.renderers.swt.ToolBarManagerRenderer.processAddition(ToolBarManagerRenderer.java:505)
	at org.eclipse.e4.ui.workbench.renderers.swt.ToolBarManagerRenderer.generateContributions(ToolBarManagerRenderer.java:481)
	at org.eclipse.e4.ui.workbench.renderers.swt.ToolBarManagerRenderer.processContribution(ToolBarManagerRenderer.java:450)
	at org.eclipse.e4.ui.workbench.renderers.swt.ToolBarManagerRenderer.createWidget(ToolBarManagerRenderer.java:413)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:992)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:659)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.subscribeChildrenHandler(PartRenderingEngine.java:312)
	at jdk.internal.reflect.GeneratedMethodAccessor22.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:58)
	at org.eclipse.e4.core.di.internal.extensions.EventObjectSupplier$DIEventHandler.handleEvent(EventObjectSupplier.java:92)
	at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:207)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:201)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:151)
	at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:133)
	at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:75)
	at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:44)
	at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:55)
	at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:60)
	at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:424)
	at org.eclipse.emf.ecore.util.EcoreEList.dispatchNotification(EcoreEList.java:248)
	at org.eclipse.emf.common.notify.impl.NotifyingListImpl.addUnique(NotifyingListImpl.java:356)
	at org.eclipse.emf.common.util.AbstractEList.add(AbstractEList.java:340)
	at org.eclipse.e4.ui.internal.workbench.ContributionsAnalyzer.processAddition(ContributionsAnalyzer.java:448)
	at org.eclipse.e4.ui.workbench.renderers.swt.TrimBarRenderer.addTrimContributions(TrimBarRenderer.java:143)
	at org.eclipse.e4.ui.workbench.renderers.swt.TrimBarRenderer.processContents(TrimBarRenderer.java:115)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:673)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.subscribeTopicToBeRendered(PartRenderingEngine.java:161)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:58)
	at org.eclipse.e4.core.di.internal.extensions.EventObjectSupplier$DIEventHandler.handleEvent(EventObjectSupplier.java:92)
	at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:207)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:201)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:151)
	at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:133)
	at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:75)
	at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:44)
	at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:55)
	at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:60)
	at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:424)
	at org.eclipse.e4.ui.model.application.ui.impl.UIElementImpl.setToBeRendered(UIElementImpl.java:316)
	at org.eclipse.ui.internal.CoolBarToTrimManager.update(CoolBarToTrimManager.java:611)
	at org.eclipse.ui.internal.WorkbenchWindow.updateActionBars(WorkbenchWindow.java:2481)
	at org.eclipse.ui.internal.WorkbenchWindow.largeUpdateEnd(WorkbenchWindow.java:2534)
	at org.eclipse.ui.internal.Workbench.largeUpdateEnd(Workbench.java:3378)
	at org.eclipse.ui.internal.WorkbenchWindow.fillActionBars(WorkbenchWindow.java:2726)
	at org.eclipse.ui.internal.WorkbenchWindow.setup(WorkbenchWindow.java:829)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:58)
	at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:976)
	at org.eclipse.e4.core.internal.di.InjectorImpl.internalInject(InjectorImpl.java:138)
	at org.eclipse.e4.core.internal.di.InjectorImpl.inject(InjectorImpl.java:94)
	at org.eclipse.e4.core.contexts.ContextInjectionFactory.inject(ContextInjectionFactory.java:84)
	at org.eclipse.ui.internal.Workbench.createWorkbenchWindow(Workbench.java:1499)
	at org.eclipse.ui.internal.Workbench.openWorkbenchWindow(Workbench.java:2557)
	at org.eclipse.ui.internal.Workbench.getWorkbenchPage(Workbench.java:2045)
	at org.eclipse.ui.internal.Workbench.setReference(Workbench.java:2090)
	at org.eclipse.ui.internal.Workbench.lambda$10(Workbench.java:1981)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.lambda$0(UIEventHandler.java:38)
	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:183)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:133)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:4802)
	at org.eclipse.e4.ui.workbench.swt.DisplayUISynchronize.syncExec(DisplayUISynchronize.java:34)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38)
	at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:207)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:201)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:151)
	at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:133)
	at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:75)
	at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:44)
	at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:55)
	at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:60)
	at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:424)
	at org.eclipse.e4.ui.model.application.ui.basic.impl.PartImpl.setContext(PartImpl.java:469)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:634)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$1.run(PartRenderingEngine.java:544)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:528)
	at org.eclipse.e4.ui.workbench.renderers.swt.ElementReferenceRenderer.createWidget(ElementReferenceRenderer.java:73)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:992)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:659)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
	at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.showTab(StackRenderer.java:1379)
	at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer.postProcess(LazyStackRenderer.java:114)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:677)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
	at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.processContents(SWTPartRenderer.java:72)
	at org.eclipse.e4.ui.workbench.renderers.swt.SashRenderer.processContents(SashRenderer.java:147)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:673)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
	at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.processContents(SWTPartRenderer.java:72)
	at org.eclipse.e4.ui.workbench.renderers.swt.SashRenderer.processContents(SashRenderer.java:147)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:673)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
	at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.processContents(SWTPartRenderer.java:72)
	at org.eclipse.e4.ui.workbench.renderers.swt.PerspectiveRenderer.processContents(PerspectiveRenderer.java:48)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:673)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
	at org.eclipse.e4.ui.workbench.renderers.swt.PerspectiveStackRenderer.showTab(PerspectiveStackRenderer.java:79)
	at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer.postProcess(LazyStackRenderer.java:114)
	at org.eclipse.e4.ui.workbench.renderers.swt.PerspectiveStackRenderer.postProcess(PerspectiveStackRenderer.java:61)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:677)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
	at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.processContents(SWTPartRenderer.java:72)
	at org.eclipse.e4.ui.workbench.renderers.swt.SashRenderer.processContents(SashRenderer.java:147)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:673)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
	at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.processContents(SWTPartRenderer.java:72)
	at org.eclipse.e4.ui.workbench.renderers.swt.WBWRenderer.processContents(WBWRenderer.java:660)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:673)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1080)
	... 20 more
Caused by: org.osgi.framework.BundleException: Exception in org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin.start() of bundle org.eclipse.mylyn.tasks.ui.
	at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:838)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:766)
	at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:1032)
	at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:371)
	at org.eclipse.osgi.container.Module.doStart(Module.java:602)
	at org.eclipse.osgi.container.Module.start(Module.java:465)
	at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:509)
	at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:117)
	... 203 more
Caused by: java.lang.NoClassDefFoundError: org/slf4j/spi/LocationAwareLogger
	at org.apache.commons.logging.impl.Slf4jLogFactory.lambda$getInstance$0(Slf4jLogFactory.java:288)
	at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1708)
	at org.apache.commons.logging.impl.Slf4jLogFactory.getInstance(Slf4jLogFactory.java:286)
	at org.apache.commons.logging.impl.Slf4jLogFactory.getInstance(Slf4jLogFactory.java:281)
	at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:987)
	at org.apache.commons.httpclient.params.DefaultHttpParams.<clinit>(DefaultHttpParams.java:54)
	at org.eclipse.mylyn.commons.net.WebUtil.<clinit>(WebUtil.java:142)
	at org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin.start(TasksUiPlugin.java:492)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:817)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:1)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:569)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:809)
	... 210 more
Caused by: java.lang.ClassNotFoundException: org.slf4j.spi.LocationAwareLogger cannot be found by org.apache.commons.commons-logging_1.3.0
	at org.eclipse.osgi.internal.loader.BundleLoader.generateException(BundleLoader.java:540)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass0(BundleLoader.java:535)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:415)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:167)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
	... 222 more
@merks
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merks commented Jan 26, 2024

I've seen that as well on startup when installing the Eierlegende Wollmilchsau m1.

@HannesWell
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Using the Host OSGi Console I see:

g! p org.apache.commons.httpclient.params
osgi.wiring.package; bundle-symbolic-name="org.apache.commons.httpclient"; bundle-version:Version="3.1.0.v201012070820"; version:Version="3.1.0"; osgi.wiring.package="org.apache.commons.httpclient.params"<org.apache.commons.httpclient_3.1.0.v201012070820 [4722]>
  org.eclipse.mylyn.commons.xmlrpc_4.2.0.v20231212-2002 [4749] imports
  org.eclipse.mylyn.commons.net_4.2.0.v20231212-2002 [4739] imports

This looks like a really ancient version: v201012070820.
So probably not a Mylyn issue directly. Have to check where it is coming from.

@HannesWell
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Looks like that version is provided in recent SimRels: https://download.eclipse.org/releases/2024-03/202401121000/

And at least in the Eclipse Modelling Tools Mylyn seems to be the only user (haven't analyzed the entire SimRel):

g! p org.apache.commons.httpclient
osgi.wiring.package; bundle-symbolic-name="org.apache.commons.httpclient"; bundle-version:Version="3.1.0.v201012070820"; version:Version="3.1.0"; osgi.wiring.package="org.apache.commons.httpclient"<org.apache.commons.httpclient_3.1.0.v201012070820 [4722]>
  org.eclipse.mylyn.tasks.ui_4.2.0.v20231219-1017 [4781] imports
  org.eclipse.mylyn.commons.xmlrpc_4.2.0.v20231212-2002 [4749] imports
  org.eclipse.mylyn.commons.net_4.2.0.v20231212-2002 [4739] imports

I wonder if there are more recent alternatives using httpclient5 or at least org.apache.httpcomponents.httpclient 4?

@gnl42
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gnl42 commented Jan 26, 2024

It is a really old version. We really should refactor the code to use native Java http

@ruspl-afed
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xmlrpc were used for Bugzilla and Trac. Trac is already out. For Bugzilla Mylyn have alternative implementation, that was not productized yet.

@HannesWell
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It is a really old version. We really should refactor the code to use native Java http

That would be even better :)

@ruspl-afed
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Well, if we apply our favorite technique "Refactor -> Delete" for xmlrpc we can say goodbye for many old libraries in our target. And most probably we will loose Bugzilla support as well.

@HannesWell
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Well, if we apply our favorite technique "Refactor -> Delete" for xmlrpc we can say goodbye for many old libraries in our target. And most probably we will loose Bugzilla support as well.

Personally I don't use Bugzilla anymore (but I also don't use Mylyn actively, it is just part of the Eclipse Modelling Tools I need), so my opinion does not really count, but as far as I can tell, Bugzilla seem not to be used that much out there.

Btw. I have also analyzed the problem a bit further and think that the OSGi metadata embedded in org.apache.commons.commons-logging are wrong.
The relevant excerpt from its MANIFEST.MF:

Bundle-SymbolicName: org.apache.commons.commons-logging
Import-Package:
 javax.servlet;version="[2.1.0,3.0.0)";resolution:=optional,
 org.apache.avalon.framework.logger;version="[4.1.3,4.1.5]";resolution:=optional,
 org.apache.log;version="[1.0.1,1.0.1]";resolution:=optional,
 org.apache.log4j;version="[1.2.15,2.0.0)";resolution:=optional,
 org.apache.logging.log4j;version="[2.0,4.0)";resolution:=optional,
 org.slf4j;version="1.7.0.30";resolution:=optional

As you can see org.slf4j.spi is not imported, but as you can see in the stack-trace (and in the code) it is referenced:

Caused by: java.lang.NoClassDefFoundError: org/slf4j/spi/LocationAwareLogger
	at org.apache.commons.logging.impl.Slf4jLogFactory.lambda$getInstance$0(Slf4jLogFactory.java:288)
	at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1708)
	at org.apache.commons.logging.impl.Slf4jLogFactory.getInstance(Slf4jLogFactory.java:286)
	at org.apache.commons.logging.impl.Slf4jLogFactory.getInstance(Slf4jLogFactory.java:281)
	at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:987)
	at org.apache.commons.httpclient.params.DefaultHttpParams.<clinit>(DefaultHttpParams.java:54)
	at org.eclipse.mylyn.commons.net.WebUtil.<clinit>(WebUtil.java:142)
	at org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin.start(TasksUiPlugin.java:492)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:817)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:1)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:569)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:809)
	... 210 more

The slf4j back-end was recently introduced in commons-logging in apache/commons-logging#177.

@HannesWell HannesWell mentioned this issue Jan 26, 2024
Merged
@laeubi
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laeubi commented Jan 26, 2024

All this logging stuff is marked as optional anyways so might or might not work who knows... They probabbly better want Dynamic import package org.slf4j.*

@HannesWell
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FYI the metadata have been fixed in commons-logging in

a new release is already on vote.

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@merks @laeubi @ruspl-afed @HannesWell @gnl42