Jenkins Pipeline:如何导出错误信息？

Question

在Pipeline脚本中尝试打印错误信息（e.getMessage()）或转储堆栈跟踪时，会出现不允许的错误。如何在这种情况下将错误输出到日志中？

try {
    deleteJob( JOB_NAME )
} catch (e) {
    emailError(e.getMessage())
    echo e.getMessage()
}

不获取这个：

org.jenkinsci.plugins.scriptsecurity.sandbox.RejectedAccessException: Scripts not permitted to use method java.lang.Throwable getMessage
    at org.jenkinsci.plugins.scriptsecurity.sandbox.whitelists.StaticWhitelist.rejectMethod(StaticWhitelist.java:158)
    at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.SandboxInterceptor.onMethodCall(SandboxInterceptor.java:80)
    at org.kohsuke.groovy.sandbox.impl.Checker$1.call(Checker.java:149)
    at org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:146)
    at com.cloudbees.groovy.cps.sandbox.SandboxInvoker.methodCall(SandboxInvoker.java:15)
    at WorkflowScript.runTests(WorkflowScript:325)
    at WorkflowScript.run(WorkflowScript:97)
    at ___cps.transform___(Native Method)
    at com.cloudbees.groovy.cps.impl.ContinuationGroup.methodCall(ContinuationGroup.java:55)
    at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.dispatchOrArg(FunctionCallBlock.java:106)
    at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.fixName(FunctionCallBlock.java:74)
    at sun.reflect.GeneratedMethodAccessor315.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.cloudbees.groovy.cps.impl.ContinuationPtr$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:58)
    at com.cloudbees.groovy.cps.Continuable.run0(Continuable.java:154)
    at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.access$001(SandboxContinuable.java:19)
    at org.jenkinsci.plugins.workflow.cps.SandboxContinuable$1.call(SandboxContinuable.java:33)
    at org.jenkinsci.plugins.workflow.cps.SandboxContinuable$1.call(SandboxContinuable.java:30)
    at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.GroovySandbox.runInSandbox(GroovySandbox.java:106)
    at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.run0(SandboxContinuable.java:30)
    at org.jenkinsci.plugins.workflow.cps.CpsThread.runNextChunk(CpsThread.java:164)
    at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:277)
    at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.access$000(CpsThreadGroup.java:77)
    at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:186)
    at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:184)
    at org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$2.call(CpsVmExecutorService.java:47)
    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

- occasl

Answer 1

在Jenkins GUI中直接对调用标志进行了白名单处理。前往Jenkins中的脚本批准管理页面，通常是/scriptApproval/。

您应该会看到您尝试使用非白名单方法已创建“待定签名批准”的信息。单击method java.lang.Throwable getMessage条目旁边的批准按钮。

- Dominic Scheirlinck

Answer 2

以下代码不需要 Jenkins 管理员批准异常脚本，但可以用于在构建日志中打印堆栈跟踪。

   catch (exc) {
      def sw = new StringWriter()
      def pw = new PrintWriter(sw)
      exc.printStackTrace(pw)
      echo sw.toString()
   }

借鉴自 https://issues.jenkins.io/browse/JENKINS-44808?focusedCommentId=302635&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-302635

- Arnab

---

不错！如果你像我一样在尝试在从catch块调用的单独方法中使用它时得到了java.io.NotSerializableException: java.io.StringWriter，那么请将上面的4行代码拆分成一个带有@NonCPS注释的方法，如下所示：(newline) def printStackTrace(e) { ... } - sparrowt

Answer 3

我使用以下代码将堆栈跟踪信息打印到 Jenkins 控制台：

} catch (exception) {
    echo getStackTrace(exception)
    // needed to explicitly set the result to fail:
    currentBuild.result = 'FAILURE'
    // next only reports an "ERROR: ..." line at the end of the console output
    error exception.getMessage()
}

def String getStackTrace(Throwable aThrowable)
{
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    PrintStream ps = new PrintStream(baos, true);
    aThrowable.printStackTrace(ps);
    return baos.toString();
}

- Heri

---

这个解决方案也需要Jenkins管理员批准脚本执行，以使用ByteArrayOutputStream类。 - Arnab