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From Alexander Nöhrer (JIRA) <j...@apache.org>
Subject [jira] [Created] (FELIX-5464) java.lang.NullPointerException at org.apache.felix.scrplugin.helper.ClassScanner.processClass(ClassScanner.java:207)
Date Thu, 22 Dec 2016 09:19:58 GMT
Alexander Nöhrer created FELIX-5464:
---------------------------------------

             Summary: java.lang.NullPointerException at org.apache.felix.scrplugin.helper.ClassScanner.processClass(ClassScanner.java:207)
                 Key: FELIX-5464
                 URL: https://issues.apache.org/jira/browse/FELIX-5464
             Project: Felix
          Issue Type: Bug
          Components: SCR Tooling
    Affects Versions: scr generator 1.15.0
         Environment: Jenkins
Maven 3.3.9
Java 1.7.0_79
            Reporter: Alexander Nöhrer


I am encountering this problem on and off again only within our Jenkins build environment,
I cannot reproduce it locally with the same java and maven version. Also after some code changes
not related to SCR annotated classes it works again then it doesn't.

Unfortunately I also was not able to produce a minimum example to reproduce this.

Basically I guess what would already help is to check against null and log the 'pathToClassFile'
that caused the input to be 'null'.

By the way I wanted to do this myself just to get more information what is wrong in my environment,
however the http://felix.apache.org/downloads.cgi links for the generator sources return 404...

Here the output on Jenkins:

[ERROR] Failed to execute goal org.apache.felix:maven-scr-plugin:1.23.0:scr (generate-scr-scrdescriptor)
on project XXX: Execution generate-scr-scrdescriptor of goal org.apache.felix:maven-scr-plugin:1.23.0:scr
failed. NullPointerException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.felix:maven-scr-plugin:1.23.0:scr
(generate-scr-scrdescriptor) on project inew-commons-rest-exporter-rest: Execution generate-scr-scrdescriptor
of goal org.apache.felix:maven-scr-plugin:1.23.0:scr failed.
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
	at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
	at org.jvnet.hudson.maven3.launcher.Maven33Launcher.main(Maven33Launcher.java:129)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launchStandard(Launcher.java:330)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:238)
	at jenkins.maven3.agent.Maven33Main.launch(Maven33Main.java:176)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at hudson.maven.Maven3Builder.call(Maven3Builder.java:133)
	at hudson.maven.Maven3Builder.call(Maven3Builder.java:68)
	at hudson.remoting.UserRequest.perform(UserRequest.java:153)
	at hudson.remoting.UserRequest.perform(UserRequest.java:50)
	at hudson.remoting.Request$2.run(Request.java:336)
	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:68)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution generate-scr-scrdescriptor
of goal org.apache.felix:maven-scr-plugin:1.23.0:scr failed.
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:145)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
	... 31 more
Caused by: java.lang.NullPointerException
	at org.apache.felix.scrplugin.helper.ClassScanner.processClass(ClassScanner.java:207)
	at org.apache.felix.scrplugin.helper.ClassScanner.getDescription(ClassScanner.java:433)
	at org.apache.felix.scrplugin.SCRDescriptorGenerator.createComponent(SCRDescriptorGenerator.java:398)
	at org.apache.felix.scrplugin.SCRDescriptorGenerator.execute(SCRDescriptorGenerator.java:161)
	at org.apache.felix.scrplugin.mojo.SCRDescriptorMojo.execute(SCRDescriptorMojo.java:238)
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
	... 32 more



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