CheckStylePluginException: The inspection could not be executed

[mikrobestie]

Hello again,

I'm now using the newest version of your checkstyle plugin, and it fails to scan any file. The exception thrown is:

The inspection could not be executed.
org.infernus.idea.checkstyle.exception.CheckStylePluginException: The inspection could not be executed.
    at org.infernus.idea.checkstyle.CheckStylePlugin.processError(CheckStylePlugin.java:120)
    at org.infernus.idea.checkstyle.CheckStyleInspection.checkFile(CheckStyleInspection.java:240)
    at com.intellij.codeInspection.LocalInspectionTool$1.visitFile(LocalInspectionTool.java:151)
    at com.intellij.psi.impl.source.PsiJavaFileBaseImpl.accept(PsiJavaFileBaseImpl.java:412)
    at com.intellij.codeInspection.InspectionEngine.acceptElements(InspectionEngine.java:80)
    at com.intellij.codeInsight.daemon.impl.LocalInspectionsPass$4.process(LocalInspectionsPass.java:309)
    at com.intellij.codeInsight.daemon.impl.LocalInspectionsPass$4.process(LocalInspectionsPass.java:304)
    at com.intellij.concurrency.ApplierCompleter.a(ApplierCompleter.java:122)
    at com.intellij.concurrency.ApplierCompleter.access$000(ApplierCompleter.java:44)
    at com.intellij.concurrency.ApplierCompleter$1.run(ApplierCompleter.java:85)
    at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1104)
    at com.intellij.concurrency.ApplierCompleter$2.run(ApplierCompleter.java:94)
    at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:452)
    at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:449)
    at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:402)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
    at com.intellij.concurrency.ApplierCompleter.a(ApplierCompleter.java:106)
    at com.intellij.concurrency.ApplierCompleter.compute(ApplierCompleter.java:82)
    at jsr166e.CountedCompleter.exec(CountedCompleter.java:684)
    at jsr166e.ForkJoinTask.doExec(ForkJoinTask.java:260)
    at jsr166e.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:858)
    at jsr166e.ForkJoinPool.scan(ForkJoinPool.java:1687)
    at jsr166e.ForkJoinPool.runWorker(ForkJoinPool.java:1642)
    at jsr166e.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:109)
Caused by: java.lang.NullPointerException
    at com.google.common.io.Flushables.flush(Flushables.java:56)
    at com.puppycrawl.tools.checkstyle.PropertyCacheFile.flushAndCloseOutStream(PropertyCacheFile.java:135)
    at com.puppycrawl.tools.checkstyle.PropertyCacheFile.destroy(PropertyCacheFile.java:123)
    at com.puppycrawl.tools.checkstyle.TreeWalker.destroy(TreeWalker.java:499)
    at com.puppycrawl.tools.checkstyle.Checker.process(Checker.java:299)
    at org.infernus.idea.checkstyle.CheckStyleInspection.scanFile(CheckStyleInspection.java:281)
    at org.infernus.idea.checkstyle.CheckStyleInspection.checkFile(CheckStyleInspection.java:227)
    ... 22 more

I can post our configuration file if it's needed. Thank you for your time.

[jshiell]

Hello. Could you please post your configuration, as that exception seems to be coming out of CheckStyle itself (which is rather worrying)? It may be related to checkstyle/checkstyle#836.

[mikrobestie]

Sure, here it is.

https://drive.google.com/open?id=0B2Ztw8w27QIAel9PeHNkbEJfTlE&authuser=0

The strange thing is that everything is fine, when I run checkstyle as a maven goal with the same configuration.

[jshiell]

Thanks. That is indeed strange. Which version of the Maven plugin are you using?

[jshiell]

It looks like checkstyle-maven-plugin 2.15 is using CheckStyle 6.1.1, whereas the plugin is using CheckStyle 6.5.

[mikrobestie]

Yes but we have overriden checkstyle version in maven plugin to 6.5, and it works.

[jshiell]

The Drive file is access controlled, so the access request from infernus.org is me.

[jshiell]

Thanks. I fear it does look like a CheckStyle bug - I'll raise a CheckStyle bug if you're happy for me to share your config with the CheckStyle devs (and hence GitHub)?

 testcase ∞  java -jar ../checkstyle-6.5-all.jar -c issue-150.xml LocationPanel.java                               jshiell@RecentConvert
Exception in thread "main" java.lang.NullPointerException
    at com.google.common.io.Flushables.flush(Flushables.java:56)
    at com.puppycrawl.tools.checkstyle.PropertyCacheFile.flushAndCloseOutStream(PropertyCacheFile.java:135)
    at com.puppycrawl.tools.checkstyle.PropertyCacheFile.destroy(PropertyCacheFile.java:123)
    at com.puppycrawl.tools.checkstyle.TreeWalker.destroy(TreeWalker.java:499)
    at com.puppycrawl.tools.checkstyle.Checker.process(Checker.java:299)
    at com.puppycrawl.tools.checkstyle.Main.main(Main.java:125)

[mikrobestie]

It doesn't matter, we would be glad to have this issue resolved for everyone. Thanks!

[jshiell]

Thanks - raised as checkstyle:931. Once they release a patch I'll update the plugin and close this off.

[jshiell]

Looks like 6.6 is now out - I'll try get this out later this week.

[jshiell]

Released as 4.15.0. Thanks for your help.