Jenkins 和 Ruby Metric 插件错误
我正在为 Ruby on Rails 应用程序运行 Jenkins 1.424.2，并且我想使用 Ruby Metrics 插件。我已经使用管理插件网站安装了它。但是当我重新启动 Jenkins 时，该插件在作业的配置选项中不可用。
因此，我查看了日志文件，结果发现该插件无法启动。首先是依赖项 maven-plugin 的一些错误，然后是此错误
SEVERE: Failed Initializing plugin rubyMetrics
java.lang.NullPointerException
这是日志文件的完整输出：
...
Running from: /usr/share/jenkins/jenkins.war
[Winstone 2012/02/23 16:53:57] - Beginning extraction from war file
Jenkins home directory: /var/lib/jenkins found at: EnvVars.masterEnvVars.get("JENKINS_HOME")
[Winstone 2012/02/23 16:53:59] - HTTP Listener started: port=8080
[Winstone 2012/02/23 16:53:59] - Winstone Servlet Engine v0.9.10 running: controlPort=disabled
Feb 23, 2012 4:53:59 PM jenkins.model.Jenkins$6 onAttained
INFO: Started initialization
Feb 23, 2012 4:54:00 PM jenkins.model.Jenkins$6 onAttained
INFO: Listed all plugins
Feb 23, 2012 4:54:00 PM jenkins.model.Jenkins$6 onTaskFailed
SEVERE: Failed Loading plugin rubyMetrics
java.io.IOException: Dependency maven-plugin (1.397) doesn't exist
at hudson.PluginWrapper.resolvePluginDependencies(PluginWrapper.java:424)
at hudson.PluginManager$2$1$1.run(PluginManager.java:284)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)
at jenkins.model.Jenkins$5.runTask(Jenkins.java:797)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:679)
Feb 23, 2012 4:54:00 PM hudson.plugins.ansicolor.PluginImpl start
INFO: starting ansicolor plugin (https://github.com/dblock/jenkins-ansicolor-plugin)
Feb 23, 2012 4:54:00 PM jenkins.model.Jenkins$6 onAttained
INFO: Prepared all plugins
Feb 23, 2012 4:54:00 PM jenkins.model.Jenkins$6 onTaskFailed
SEVERE: Failed Initializing plugin rubyMetrics
java.lang.NullPointerException
at hudson.PluginManager$2$1$2.run(PluginManager.java:301)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)
at jenkins.model.Jenkins$5.runTask(Jenkins.java:797)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:679)
Feb 23, 2012 4:54:00 PM jenkins.model.Jenkins$6 onAttained
INFO: Started all plugins
null
Feb 23, 2012 4:54:00 PM jenkins.model.Jenkins$6 onAttained
INFO: Augmented all extensions
hudson.util.IOException2: Unable to read /var/lib/jenkins/jobs/Raffler/builds/2012-02-23_16-28-13/build.xml
at hudson.XmlFile.unmarshal(XmlFile.java:155)
at hudson.model.Run.reload(Run.java:283)
at hudson.model.Run.<init>(Run.java:272)
at hudson.model.AbstractBuild.<init>(AbstractBuild.java:159)
at hudson.model.Build.<init>(Build.java:100)
at hudson.model.FreeStyleBuild.<init>(FreeStyleBuild.java:41)
at sun.reflect.GeneratedConstructorAccessor7.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
at hudson.model.AbstractProject.loadBuild(AbstractProject.java:947)
at hudson.model.AbstractProject$1.create(AbstractProject.java:256)
at hudson.model.AbstractProject$1.create(AbstractProject.java:254)
at hudson.model.RunMap.load(RunMap.java:221)
at hudson.model.AbstractProject.onLoad(AbstractProject.java:254)
at hudson.model.Project.onLoad(Project.java:88)
at hudson.model.Items.load(Items.java:115)
at jenkins.model.Jenkins$14.run(Jenkins.java:2273)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)
at jenkins.model.Jenkins$5.runTask(Jenkins.java:797)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:679)
Caused by: com.thoughtworks.xstream.io.StreamException: : input contained no data
at com.thoughtworks.xstream.io.xml.XppReader.pullNextEvent(XppReader.java:80)
at com.thoughtworks.xstream.io.xml.AbstractPullReader.readRealEvent(AbstractPullReader.java:154)
at com.thoughtworks.xstream.io.xml.AbstractPullReader.readEvent(AbstractPullReader.java:147)
at com.thoughtworks.xstream.io.xml.AbstractPullReader.move(AbstractPullReader.java:126)
at com.thoughtworks.xstream.io.xml.AbstractPullReader.moveDown(AbstractPullReader.java:111)
at com.thoughtworks.xstream.io.xml.XppReader.<init>(XppReader.java:48)
at com.thoughtworks.xstream.io.xml.XppDriver.createReader(XppDriver.java:44)
at com.thoughtworks.xstream.io.xml.XppDriver.createReader(XppDriver.java:49)
at hudson.XmlFile.unmarshal(XmlFile.java:153)
... 24 more
Caused by: java.io.EOFException: input contained no data
at org.xmlpull.mxp1.MXParser.fillBuf(MXParser.java:3003)
at org.xmlpull.mxp1.MXParser.more(MXParser.java:3046)
at org.xmlpull.mxp1.MXParser.parseProlog(MXParser.java:1410)
at org.xmlpull.mxp1.MXParser.nextImpl(MXParser.java:1395)
at org.xmlpull.mxp1.MXParser.next(MXParser.java:1093)
at com.thoughtworks.xstream.io.xml.XppReader.pullNextEvent(XppReader.java:63)
... 32 more
Feb 23, 2012 4:54:01 PM jenkins.model.Jenkins$6 onAttained
INFO: Loaded all jobs
Feb 23, 2012 4:54:01 PM jenkins.model.Jenkins$6 onAttained
INFO: Completed initialization
Feb 23, 2012 4:54:01 PM hudson.TcpSlaveAgentListener <init>
INFO: JNLP slave agent listener started on TCP port 52218
Feb 23, 2012 5:00:02 PM hudson.model.Run run
INFO: Raffler #29 main build action completed: SUCCESS
Feb 23, 2012 5:03:19 PM hudson.model.Run run
INFO: Raffler #30 main build action completed: SUCCESS
...
这是 jenkins 中的错误还是插件中的错误？我该如何修复它？
I'm running Jenkins 1.424.2 for a Ruby on Rails app and I want to use the Ruby Metrics plugin. I've installed it using the manage plugins site. But when I restart Jenkins, the plugin is not available at the config options of a job.
So, I had a look into the log files, and it turned out, that the plugin couldn't be started. First some errors with a dependency maven-plugin and then this error
SEVERE: Failed Initializing plugin rubyMetrics
java.lang.NullPointerException
Here is the whole output of the logfile:
...
Running from: /usr/share/jenkins/jenkins.war
[Winstone 2012/02/23 16:53:57] - Beginning extraction from war file
Jenkins home directory: /var/lib/jenkins found at: EnvVars.masterEnvVars.get("JENKINS_HOME")
[Winstone 2012/02/23 16:53:59] - HTTP Listener started: port=8080
[Winstone 2012/02/23 16:53:59] - Winstone Servlet Engine v0.9.10 running: controlPort=disabled
Feb 23, 2012 4:53:59 PM jenkins.model.Jenkins$6 onAttained
INFO: Started initialization
Feb 23, 2012 4:54:00 PM jenkins.model.Jenkins$6 onAttained
INFO: Listed all plugins
Feb 23, 2012 4:54:00 PM jenkins.model.Jenkins$6 onTaskFailed
SEVERE: Failed Loading plugin rubyMetrics
java.io.IOException: Dependency maven-plugin (1.397) doesn't exist
at hudson.PluginWrapper.resolvePluginDependencies(PluginWrapper.java:424)
at hudson.PluginManager$2$1$1.run(PluginManager.java:284)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)
at jenkins.model.Jenkins$5.runTask(Jenkins.java:797)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:679)
Feb 23, 2012 4:54:00 PM hudson.plugins.ansicolor.PluginImpl start
INFO: starting ansicolor plugin (https://github.com/dblock/jenkins-ansicolor-plugin)
Feb 23, 2012 4:54:00 PM jenkins.model.Jenkins$6 onAttained
INFO: Prepared all plugins
Feb 23, 2012 4:54:00 PM jenkins.model.Jenkins$6 onTaskFailed
SEVERE: Failed Initializing plugin rubyMetrics
java.lang.NullPointerException
at hudson.PluginManager$2$1$2.run(PluginManager.java:301)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)
at jenkins.model.Jenkins$5.runTask(Jenkins.java:797)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:679)
Feb 23, 2012 4:54:00 PM jenkins.model.Jenkins$6 onAttained
INFO: Started all plugins
null
Feb 23, 2012 4:54:00 PM jenkins.model.Jenkins$6 onAttained
INFO: Augmented all extensions
hudson.util.IOException2: Unable to read /var/lib/jenkins/jobs/Raffler/builds/2012-02-23_16-28-13/build.xml
at hudson.XmlFile.unmarshal(XmlFile.java:155)
at hudson.model.Run.reload(Run.java:283)
at hudson.model.Run.<init>(Run.java:272)
at hudson.model.AbstractBuild.<init>(AbstractBuild.java:159)
at hudson.model.Build.<init>(Build.java:100)
at hudson.model.FreeStyleBuild.<init>(FreeStyleBuild.java:41)
at sun.reflect.GeneratedConstructorAccessor7.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
at hudson.model.AbstractProject.loadBuild(AbstractProject.java:947)
at hudson.model.AbstractProject$1.create(AbstractProject.java:256)
at hudson.model.AbstractProject$1.create(AbstractProject.java:254)
at hudson.model.RunMap.load(RunMap.java:221)
at hudson.model.AbstractProject.onLoad(AbstractProject.java:254)
at hudson.model.Project.onLoad(Project.java:88)
at hudson.model.Items.load(Items.java:115)
at jenkins.model.Jenkins$14.run(Jenkins.java:2273)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)
at jenkins.model.Jenkins$5.runTask(Jenkins.java:797)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:679)
Caused by: com.thoughtworks.xstream.io.StreamException: : input contained no data
at com.thoughtworks.xstream.io.xml.XppReader.pullNextEvent(XppReader.java:80)
at com.thoughtworks.xstream.io.xml.AbstractPullReader.readRealEvent(AbstractPullReader.java:154)
at com.thoughtworks.xstream.io.xml.AbstractPullReader.readEvent(AbstractPullReader.java:147)
at com.thoughtworks.xstream.io.xml.AbstractPullReader.move(AbstractPullReader.java:126)
at com.thoughtworks.xstream.io.xml.AbstractPullReader.moveDown(AbstractPullReader.java:111)
at com.thoughtworks.xstream.io.xml.XppReader.<init>(XppReader.java:48)
at com.thoughtworks.xstream.io.xml.XppDriver.createReader(XppDriver.java:44)
at com.thoughtworks.xstream.io.xml.XppDriver.createReader(XppDriver.java:49)
at hudson.XmlFile.unmarshal(XmlFile.java:153)
... 24 more
Caused by: java.io.EOFException: input contained no data
at org.xmlpull.mxp1.MXParser.fillBuf(MXParser.java:3003)
at org.xmlpull.mxp1.MXParser.more(MXParser.java:3046)
at org.xmlpull.mxp1.MXParser.parseProlog(MXParser.java:1410)
at org.xmlpull.mxp1.MXParser.nextImpl(MXParser.java:1395)
at org.xmlpull.mxp1.MXParser.next(MXParser.java:1093)
at com.thoughtworks.xstream.io.xml.XppReader.pullNextEvent(XppReader.java:63)
... 32 more
Feb 23, 2012 4:54:01 PM jenkins.model.Jenkins$6 onAttained
INFO: Loaded all jobs
Feb 23, 2012 4:54:01 PM jenkins.model.Jenkins$6 onAttained
INFO: Completed initialization
Feb 23, 2012 4:54:01 PM hudson.TcpSlaveAgentListener <init>
INFO: JNLP slave agent listener started on TCP port 52218
Feb 23, 2012 5:00:02 PM hudson.model.Run run
INFO: Raffler #29 main build action completed: SUCCESS
Feb 23, 2012 5:03:19 PM hudson.model.Run run
INFO: Raffler #30 main build action completed: SUCCESS
...
Is this a bug in jenkins or in the plugin? How can i fix it?
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评论（1）
一些 Jenkins 插件依赖于其他插件。看起来您需要更新 Maven 插件（它是核心 Jenkins 发行版的一部分）。转到 http://[jenkins_server]/pluginManager/ 并查看它是否允许您更新插件。如果没有，请访问
http://[jenkins_server]/pluginManager/installed并检查 Maven 插件是否已安装及其版本。如果已安装，但版本< 1.397 或者根本没有安装，您可能需要更新整个 Jenkins 安装。（不过，这有点奇怪，因为 Jenkins 1.424 应该附带 Maven 1.424，所以整个事情可能是其中一个插件的错误）。
Some Jenkins plugins depend on other plugins. It looks like you need to update Maven plugin (which is part of core Jenkins distribution). Goto
http://[jenkins_server]/pluginManager/and see if it offers you to update the plugin. If not, go tohttp://[jenkins_server]/pluginManager/installedand check if Maven plugin is installed at all and which version it is. If it is installed, but the version is < 1.397 or it is not installed at all you may have to update the whole Jenkins installation.(This is a bit weird, though, because Jenkins 1.424 should come with Maven 1.424, so the whole thing may be a bug in one of the plugins).