Jenkins Groovy访问属性时出现StackOverFlowError

Question

我正在尝试编写一个小作业DSL，但是在访问类属性时，我正在努力获得java.lang.StackOverflowError错误。

因此，甚至不需要复杂的脚本。请参见以下脚本

class Komponente {

  String name

  Komponente(name) {
    this.name = name
  }

  String getName() {
    return this.name
  }  

  String toString() {
    return 'Klasse: Komponente (name: [' + this.name +'])'
  }
}

Komponente komponente = new Komponente('Testkomponente')

println 'Erstellte Komponente: ' + komponente.getName()

​

当在Groovy web控制台上运行时，它工作得很好，但是当在我的Jenkins上运行时，我得到:

FATAL: null
java.lang.StackOverflowError
  at java.lang.ClassLoader.findLoadedClass(ClassLoader.java:1038)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:406)
  at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:677)
  at groovy.lang.GroovyClassLoader$InnerLoader.loadClass(GroovyClassLoader.java:425)
  at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:787)
  at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:775)
  at sun.reflect.GeneratedMethodAccessor316.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:498)
  at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
  at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
  at groovy.lang.MetaClassImpl.getProperty(MetaClassImpl.java:1850)
  at groovy.lang.MetaClassImpl.getProperty(MetaClassImpl.java:3758)
  at Komponente.getProperty(script)
  at org.codehaus.groovy.runtime.InvokerHelper.getProperty(InvokerHelper.java:174)
  at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.getProperty(ScriptBytecodeAdapter.java:456)
  at org.kohsuke.groovy.sandbox.impl.Checker$6.call(Checker.java:290)
  at org.kohsuke.groovy.sandbox.GroovyInterceptor.onGetProperty(GroovyInterceptor.java:68)
  at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.SandboxInterceptor.onGetProperty(SandboxInterceptor.java:257)
  at org.kohsuke.groovy.sandbox.impl.Checker$6.call(Checker.java:288)
  at org.kohsuke.groovy.sandbox.impl.Checker.checkedGetProperty(Checker.java:292)
  at org.kohsuke.groovy.sandbox.impl.Checker$checkedGetProperty$2.callStatic(Unknown Source)
  at Komponente.getName(script:10)
  at sun.reflect.GeneratedMethodAccessor316.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:498)
  at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
  at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
  at groovy.lang.MetaClassImpl.getProperty(MetaClassImpl.java:1850)
  at groovy.lang.MetaClassImpl.getProperty(MetaClassImpl.java:3758)
  at Komponente.getProperty(script)
  at org.codehaus.groovy.runtime.InvokerHelper.getProperty(InvokerHelper.java:174)
  at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.getProperty(ScriptBytecodeAdapter.java:456)
  at org.kohsuke.groovy.sandbox.impl.Checker$6.call(Checker.java:290)
  at org.kohsuke.groovy.sandbox.GroovyInterceptor.onGetProperty(GroovyInterceptor.java:68)
  at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.SandboxInterceptor.onGetProperty(SandboxInterceptor.java:257)
  at org.kohsuke.groovy.sandbox.impl.Checker$6.call(Checker.java:288)
  at org.kohsuke.groovy.sandbox.impl.Checker.checkedGetProperty(Checker.java:292)
  at org.kohsuke.groovy.sandbox.impl.Checker$checkedGetProperty$2.callStatic(Unknown Source)
  at Komponente.getName(script:10)
  ...

  (As you can see this repeates)

如何在Jenkins上运行的Groovy脚本中访问类属性，而不出现< code>StackOverflowError异常？

我的系统：

• 詹金斯版本是 2.73.3
• 工作DSL插件 1.68
• 订书机Groovy module org.kohsuke.stapler：stapler-groovy：1.250
• Apache Groovy org.codehaus.groovy：groovy-all：2.4.11

我已经对这个错误信息做了一些搜索，但我发现的所有jenkins问题至少在2.7.1中已经修复并关闭，所以应该包括在我的Jenkins版本中。

Answer 1

从类中删除getName（）方法。当您指定类字段（如＜code＞String name＜/code＞）时，您可以直接获得方法＜code＞String getName（）＜/code＞和＜code＞void setName（String name）＜/ccode＞。

请记住，Jenkins Groovy脚本执行环境与普通Groovy略有不同(例如，在Groovy控制台中)——Jenkins使用groovy-cps执行环境。

在您的案例中，遵循类＜code＞org.kohsuke.groovy.sandbox.impl。根据调用Komponente的堆栈跟踪，检查器导致错误。getName（）触发了组件。getProperty（）方法通过以下执行链：

  at Komponente.getProperty(script)
  at org.codehaus.groovy.runtime.InvokerHelper.getProperty(InvokerHelper.java:174)
  at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.getProperty(ScriptBytecodeAdapter.java:456)
  at org.kohsuke.groovy.sandbox.impl.Checker$6.call(Checker.java:290)
  at org.kohsuke.groovy.sandbox.GroovyInterceptor.onGetProperty(GroovyInterceptor.java:68)
  at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.SandboxInterceptor.onGetProperty(SandboxInterceptor.java:257)
  at org.kohsuke.groovy.sandbox.impl.Checker$6.call(Checker.java:288)
  at org.kohsuke.groovy.sandbox.impl.Checker.checkedGetProperty(Checker.java:292)
  at org.kohsuke.groovy.sandbox.impl.Checker$checkedGetProperty$2.callStatic(Unknown Source)
  at Komponente.getName(script:10)

和＜code＞Komponente。getProperty（）触发了组件。getName（）＜/code＞，然后会运行无限循环，导致＜code＞StackOverflowError＜/code>。

当我将您的类复制到我的测试管道脚本时，出现了类似的问题，下面是我得到的堆栈跟踪:

Started by user admin
[Pipeline] End of Pipeline
java.lang.StackOverflowError: Excessively nested closures/functions at Komponente.getName(WorkflowScript:10) - look for unbounded recursion - call depth: 1025
    at com.cloudbees.groovy.cps.impl.CpsFunction.invoke(CpsFunction.java:28)
    at com.cloudbees.groovy.cps.impl.CpsCallableInvocation.invoke(CpsCallableInvocation.java:40)
    at com.cloudbees.groovy.cps.impl.ContinuationGroup.methodCall(ContinuationGroup.java:62)
    at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.dispatchOrArg(FunctionCallBlock.java:109)
    at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.fixName(FunctionCallBlock.java:77)
    at sun.reflect.GeneratedMethodAccessor106.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.cloudbees.groovy.cps.impl.ContinuationPtr$ContinuationImpl.receive(ContinuationPtr.java:72)
    at com.cloudbees.groovy.cps.impl.ConstantBlock.eval(ConstantBlock.java:21)
    at com.cloudbees.groovy.cps.Next.step(Next.java:83)
    at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:174)
    at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:163)
    at org.codehaus.groovy.runtime.GroovyCategorySupport$ThreadCategoryInfo.use(GroovyCategorySupport.java:122)
    at org.codehaus.groovy.runtime.GroovyCategorySupport.use(GroovyCategorySupport.java:261)
    at com.cloudbees.groovy.cps.Continuable.run0(Continuable.java:163)
    at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.access$001(SandboxContinuable.java:19)
    at org.jenkinsci.plugins.workflow.cps.SandboxContinuable$1.call(SandboxContinuable.java:35)
    at org.jenkinsci.plugins.workflow.cps.SandboxContinuable$1.call(SandboxContinuable.java:32)
    at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.GroovySandbox.runInSandbox(GroovySandbox.java:108)
    at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.run0(SandboxContinuable.java:32)
    at org.jenkinsci.plugins.workflow.cps.CpsThread.runNextChunk(CpsThread.java:174)
    at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:331)
    at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.access$200(CpsThreadGroup.java:82)
    at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:243)
    at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:231)
    at org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$2.call(CpsVmExecutorService.java:64)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:112)
    at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Finished: FAILURE

它不像你的那么简单，但它是由同样的事情引起的。当我删除String getName（）方法时，它按预期工作。它也应该对你有用。希望有帮助。