[JIRA] (JENKINS-14790) NullPointerException starting Xvfb on remote slave

Brian Sipos created JENKINS-14790

NullPointerException starting Xvfb on remote slave

Issue Type:	Bug
Affects Versions:	current
Assignee:	zregvart
Components:	xvfb
Created:	14/Aug/12 4:00 PM
Description:	I enabled Xvfb in a job, configured both the master and the slave to create a default Xvfb config and properly locate the binary on the slave. Every time I run the job the result is the following backtrace: Xvfb startingFATAL: null java.lang.NullPointerException at com.cloudbees.jenkins.plugins.customtools.CustomToolInstallWrapper$2.toEnvVars(CustomToolInstallWrapper.java:142) at com.cloudbees.jenkins.plugins.customtools.CustomToolInstallWrapper$2.launch(CustomToolInstallWrapper.java:131) at hudson.Launcher$ProcStarter.start(Launcher.java:338) at org.jenkinsci.plugins.xvfb.XvfbBuildWrapper.decorateLauncher(XvfbBuildWrapper.java:191) at hudson.model.AbstractBuild$AbstractBuildExecution.createLauncher(AbstractBuild.java:549) at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:475) at hudson.model.Run.execute(Run.java:1502) at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46) at hudson.model.ResourceController.execute(ResourceController.java:88) at hudson.model.Executor.run(Executor.java:236)
Environment:	Fedora 16 master and RHEL5 slave
Project:	Jenkins
Priority:	Major
Reporter:	Brian Sipos

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Julien R. commented on JENKINS-14790

NullPointerException starting Xvfb on remote slave

Hum actually can't reproduce on centos5: Name: Xvfb Directory in which to find Xvfb executable: '/usr/bin/' Slave was able to start without NPE

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SCM/JIRA link daemon commented on JENKINS-14790

NullPointerException starting Xvfb on remote slave

Code changed in jenkins User: Zoran Regvart Path: src/main/java/org/jenkinsci/plugins/xvfb/XvfbBuildWrapper.java src/main/resources/org/jenkinsci/plugins/xvfb/Messages.properties http://jenkins-ci.org/commit/xvfb-plugin/40e566d37f2cafb78b659693fcc416d79fe7dfa6 Log: JENKINS-14790 NullPointerException starting Xvfb on remote slave

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zregvart commented on JENKINS-14790

NullPointerException starting Xvfb on remote slave

Yes I found a similar issue when Xvfb plugin is enabled on the job before tool installation/configuration in the jenkins (master/slave) configuration. You seem to have customtools-plugin installed which clouded this issue. And I'm unable to reproduce your exact issue with customtools-plugin installed (environment having null value). Unfortunately the Xvfb plugin, currently at least, does not offer automatic tool installation, and you have to install Xvfb on your master/slave machines and configure the path in the jenkins configuration. I've made a small fix so that now if no installation is configured in jenkins a warning message is placed in the console of the build. Is it alright with you that I close this issue?

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Brian Sipos commented on JENKINS-14790

NullPointerException starting Xvfb on remote slave

My failing setup defined a default path for Xvfb, but did not define the same path for each slave (all the slaves would have path /usr/bin) so I expected that the default path would be used. At least having an error message with instructions (as you have changed) instead of a generic null exception is definite improvement. I am okay with closing the issue as-is.

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zregvart resolved JENKINS-14790 as Fixed

NullPointerException starting Xvfb on remote slave

Change By:	zregvart (15/Sep/12 4:20 PM)
Status:	Open Resolved
Resolution:	Fixed

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zregvart commented on JENKINS-14790

NullPointerException starting Xvfb on remote slave

Making as fixed, the warning message is present from 1.0.3 onward.

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zregvart closed JENKINS-14790 as Fixed

NullPointerException starting Xvfb on remote slave

Change By:	zregvart (18/Dec/12 1:46 PM)
Status:	Resolved Closed

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