SonarLint (Eclipse) - Null Pointer Exception - Unable to open Rule Description Web View

[markus.m...@gmx.at]

Hi,

Im using Eclipse Oxygen.2 (4.7.2, 20171218-0600, x64) and JDK 1.8.0_131 (x64) with SonarLint for Eclipse 3.3.1.201712071600.

SonarLint Analysis is successful and issues are listed in "SonarLint Issues" view.

But when I right-click on Issue and open "Rule Description" I got the below NullPointerException with error message "Unable to open Rule Description Web View":

Unable to open Rule Description Web View
java.lang.NullPointerException
 at org.sonarlint.eclipse.ui.internal.SonarLintImages.getTypeImage(SonarLintImages.java:101)
 at org.sonarlint.eclipse.ui.internal.views.RuleDescriptionWebView.open(RuleDescriptionWebView.java:105)
 at org.sonarlint.eclipse.ui.internal.views.RuleDescriptionWebView.open(RuleDescriptionWebView.java:1)
 at org.sonarlint.eclipse.ui.internal.views.AbstractLinkedSonarWebView.setInput(AbstractLinkedSonarWebView.java:198)
 at org.sonarlint.eclipse.ui.internal.command.ShowRuleDescriptionCommand.execute(ShowRuleDescriptionCommand.java:33)
 at org.sonarlint.eclipse.ui.internal.command.AbstractIssueCommand.execute(AbstractIssueCommand.java:63)
 at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:291)
 at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:92)
 at sun.reflect.GeneratedMethodAccessor161.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:498)
 at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55)
 at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:305)
 at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:239)
 at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132)
 at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:152)
 at org.eclipse.core.commands.Command.executeWithChecks(Command.java:494)
 at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:487)
 at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210)
 at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.executeItem(HandledContributionItem.java:431)
 at org.eclipse.e4.ui.workbench.renderers.swt.AbstractContributionItem.handleWidgetSelection(AbstractContributionItem.java:446)
 at org.eclipse.e4.ui.workbench.renderers.swt.AbstractContributionItem.lambda$2(AbstractContributionItem.java:472)
 at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:86)
 at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4428)
 at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079)
 at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4238)
 at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3817)
 at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1150)
 at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
 at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1039)
 at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153)
 at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:680)
 at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
 at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594)
 at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
 at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:151)
 at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
 at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
 at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
 at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
 at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
 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:653)
 at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)
 at org.eclipse.equinox.launcher.Main.run(Main.java:1499)

This is very similar to the issue described in SonarLint - Null Pointer Exception - Unable to open Rule Description Web View, but the comments on the github-issue linked in that other thread indicate that that bug only occured in development of SonarLint 3.0 and never went public. Well here I have it. 

[Julien HENRY]

Hi Markus,

Can you precise:

1) The key of the rule you are opening description for (you can add column "Rule key" in the SonarLint On-the-fly view)

2 If you are in connected mode, and if yes, what is your server version

++

Julien Henry | SonarSource

Developer

https://sonarsource.com

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[markus.m...@gmx.at]

Hi Julien,

1) The issue I'm currently experiencing the problem with is squid:S3725 ("Replace this with a call to the "toFile().exists()" method").

2) Yes, I'm in connected mode, and the server version is 6.1. 

Regards, Markus

[Julien HENRY]

Can you open in a web browser:

<your QS server>/api/rules/search?f=repo,name,severity,lang,htmlDesc,htmlNote,internalKey,isTemplate,templateKey,actives&statuses=BETA,DEPRECATED,READY&q=squid:S3725

and check that the issue type is there in the response. Example:

Julien Henry | SonarSource

Developer

https://sonarsource.com

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[markus.m...@gmx.at]

Hi Julien,

yes, the type is there:

[Julien HENRY]

Can you try to open the SonarQube server view, then right click on your server and do "Update all project bindings". It should fix your issue.

Julien Henry | SonarSource

Developer

https://sonarsource.com

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[markus.m...@gmx.at]

Yup. That did the trick.

Thanks a lot, Julien.

Actually, my Eclipse had "lost" the access token for my SonarQube server, so authentication against the server failed and I had to generate a new token before I could update the project bindings.

It would be helpful, if SonarLint would throw a corresponding exception instead of an NPE. 

However, it could be that SonarLint had tried to inform me about that authentication problem before, but as this SonarLint-had-a-problem window pops-up quite often, due to some flaky access-problems to its .metadata, I usually dismiss this pop-up without further attention. My bad.

All the Best,

Markus