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GUI: Dashboard exception #2423

Closed Tom-Willemsen closed 7 years ago

Tom-Willemsen commented 7 years ago

On startup this happens sometimes. It's inconsistent. It seems to be because it has got a null pointer exception when reading something from the DAE XML.

This has happened on IRIS and to me while pointing at ALF. Both instruments were in a "PROCESSING" state at the time so this might give some pointers.

Error that appears in the eclipse console:

[Fatal Error] :1:1: Premature end of file.
org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; Premature end of file.
    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:257)
    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:339)
    at uk.ac.stfc.isis.ibex.dae.dataacquisition.XmlBackedDaeSettings.buildDocument(XmlBackedDaeSettings.java:340)
    at uk.ac.stfc.isis.ibex.dae.dataacquisition.XmlBackedDaeSettings.setXml(XmlBackedDaeSettings.java:93)
    at uk.ac.stfc.isis.ibex.dae.dataacquisition.ObservingDaeSettings$1.setFromText(ObservingDaeSettings.java:36)
    at uk.ac.stfc.isis.ibex.dae.internal.SettingsGateway$1.onValue(SettingsGateway.java:37)
    at uk.ac.stfc.isis.ibex.dae.internal.SettingsGateway$1.onValue(SettingsGateway.java:1)
    at uk.ac.stfc.isis.ibex.epics.observing.ClosableObservable.setValue(ClosableObservable.java:83)
    at uk.ac.stfc.isis.ibex.epics.observing.ForwardingObservable$1.onValue(ForwardingObservable.java:34)
    at uk.ac.stfc.isis.ibex.epics.observing.ClosableObservable.setValue(ClosableObservable.java:83)
    at uk.ac.stfc.isis.ibex.epics.observing.TransformingObservable$1.onValue(TransformingObservable.java:38)
    at uk.ac.stfc.isis.ibex.epics.observing.ClosableObservable.setValue(ClosableObservable.java:83)
    at uk.ac.stfc.isis.ibex.epics.pvmanager.PVManagerObservable.access$3(PVManagerObservable.java:1)
    at uk.ac.stfc.isis.ibex.epics.pvmanager.PVManagerObservable$1.pvChanged(PVManagerObservable.java:61)
    at org.epics.pvmanager.PVReaderImpl.firePvValueChanged(PVReaderImpl.java:110)
    at org.epics.pvmanager.PVReaderImpl.setValue(PVReaderImpl.java:220)
    at org.epics.pvmanager.PVDirector$4.run(PVDirector.java:340)
    at uk.ac.stfc.isis.ibex.epics.pvmanager.CurrentThreadExecutor.execute(CurrentThreadExecutor.java:26)
    at org.epics.pvmanager.PVDirector.notifyPv(PVDirector.java:311)
    at org.epics.pvmanager.PVDirector.access$500(PVDirector.java:37)
    at org.epics.pvmanager.PVDirector$6.desiredRateEvent(PVDirector.java:385)
    at org.epics.pvmanager.SourceDesiredRateDecoupler.sendDesiredRateEvent(SourceDesiredRateDecoupler.java:160)
    at org.epics.pvmanager.PassiveScanDecoupler$1.run(PassiveScanDecoupler.java:50)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:748)

Stack trace that appears in the GUI:

java.lang.NoClassDefFoundError: uk/ac/stfc/isis/ibex/dashboard/Dashboard
    at uk.ac.stfc.isis.ibex.ui.dashboard.views.DashboardView.<init>(DashboardView.java:56)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at java.lang.Class.newInstance(Class.java:442)
    at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:184)
    at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
    at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
    at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
    at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:268)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:264)
    at org.eclipse.ui.internal.registry.ViewDescriptor.createView(ViewDescriptor.java:63)
    at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:338)
    at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:240)
    at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
    at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:315)
    at org.eclipse.ui.internal.ViewPane.setVisible(ViewPane.java:534)
    at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:180)
    at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:270)
    at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
    at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:473)
    at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1245)
    at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1198)
    at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1597)
    at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:643)
    at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:570)
    at org.eclipse.ui.internal.PartSashContainer.createControl(PartSashContainer.java:568)
    at org.eclipse.ui.internal.PerspectiveHelper.activate(PerspectiveHelper.java:272)
    at org.eclipse.ui.internal.Perspective.onActivate(Perspective.java:981)
    at org.eclipse.ui.internal.WorkbenchPage.onActivate(WorkbenchPage.java:2727)
    at org.eclipse.ui.internal.WorkbenchWindow$28.run(WorkbenchWindow.java:3030)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchWindow.setActivePage(WorkbenchWindow.java:3011)
    at org.eclipse.ui.internal.WorkbenchWindow.busyOpenPage(WorkbenchWindow.java:799)
    at org.eclipse.ui.internal.Workbench$23.runWithException(Workbench.java:1229)
    at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4144)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
    at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803)
    at org.eclipse.ui.internal.Workbench$33.runWithException(Workbench.java:1600)
    at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4144)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2609)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
    at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at uk.ac.stfc.isis.ibex.product.Application.start(Application.java:40)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
Caused by: org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while automatically activating bundle uk.ac.stfc.isis.ibex.dashboard (183).
    at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:122)
    at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)
    at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
    at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)
    at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
    at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 69 more
Caused by: org.osgi.framework.BundleException: The activator uk.ac.stfc.isis.ibex.dashboard.Dashboard for bundle uk.ac.stfc.isis.ibex.dashboard is invalid
    at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:172)
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:679)
    at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
    at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
    at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
    at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
    at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
    ... 78 more
Caused by: java.lang.NoClassDefFoundError: uk/ac/stfc/isis/ibex/dae/DaeObservables
    at uk.ac.stfc.isis.ibex.dashboard.DashboardObservables.<init>(DashboardObservables.java:57)
    at uk.ac.stfc.isis.ibex.dashboard.Dashboard.<init>(Dashboard.java:38)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at java.lang.Class.newInstance(Class.java:442)
    at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:167)
    ... 84 more
Caused by: org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while automatically activating bundle uk.ac.stfc.isis.ibex.dae (239).
    at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:122)
    at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)
    at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
    at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)
    at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
    at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 92 more
Caused by: org.osgi.framework.BundleException: The activator uk.ac.stfc.isis.ibex.dae.Dae for bundle uk.ac.stfc.isis.ibex.dae is invalid
    at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:172)
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:679)
    at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
    at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
    at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
    at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
    at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
    ... 101 more
Caused by: java.lang.NullPointerException
    at uk.ac.stfc.isis.ibex.dae.experimentsetup.periods.XMLBackedPeriodSettings.initialiseFromXml(XMLBackedPeriodSettings.java:166)
    at uk.ac.stfc.isis.ibex.dae.experimentsetup.periods.XMLBackedPeriodSettings.setXml(XMLBackedPeriodSettings.java:83)
    at uk.ac.stfc.isis.ibex.dae.experimentsetup.periods.ObservingPeriodSettings$1.setFromText(ObservingPeriodSettings.java:36)
    at uk.ac.stfc.isis.ibex.dae.internal.SettingsGateway$1.onValue(SettingsGateway.java:37)
    at uk.ac.stfc.isis.ibex.dae.internal.SettingsGateway$1.onValue(SettingsGateway.java:1)
    at uk.ac.stfc.isis.ibex.epics.observing.BaseObserver.update(BaseObserver.java:39)
    at uk.ac.stfc.isis.ibex.epics.observing.ForwardingObservable.addObserver(ForwardingObservable.java:109)
    at uk.ac.stfc.isis.ibex.dae.internal.SettingsGateway.<init>(SettingsGateway.java:53)
    at uk.ac.stfc.isis.ibex.dae.experimentsetup.periods.ObservingPeriodSettings$1.<init>(ObservingPeriodSettings.java:33)
    at uk.ac.stfc.isis.ibex.dae.experimentsetup.periods.ObservingPeriodSettings.<init>(ObservingPeriodSettings.java:33)
    at uk.ac.stfc.isis.ibex.dae.experimentsetup.ExperimentSetup.<init>(ExperimentSetup.java:63)
    at uk.ac.stfc.isis.ibex.dae.DaeModel.<init>(DaeModel.java:54)
    at uk.ac.stfc.isis.ibex.dae.Dae.<init>(Dae.java:60)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at java.lang.Class.newInstance(Class.java:442)
    at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:167)
    ... 107 more

image

Tom-Willemsen commented 7 years ago

Oops, duplicate of #2413. Closing this issue.