Jenkinsfile：java.lang.RuntimeException：方法代码太大

Question

我在 jenkisnfile 中有 Jenkins Pipeline 代码，有 790 行。我收到以下错误消息

Method code too large

11:05:24  org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
11:05:24  General error during class generation: Method code too large!
11:05:24  
11:05:24  java.lang.RuntimeException: Method code too large!
11:05:24    at groovyjarjarasm.asm.MethodWriter.a(Unknown Source)
11:05:24    at groovyjarjarasm.asm.ClassWriter.toByteArray(Unknown Source)
11:05:24    at org.codehaus.groovy.control.CompilationUnit$17.call(CompilationUnit.java:827)
11:05:24    at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1065)
11:05:24    at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:603)
11:05:24    at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:581)
11:05:24    at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:558)
11:05:24    at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:298)
11:05:24    at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:268)
11:05:24    at groovy.lang.GroovyShell.parseClass(GroovyShell.java:688)
11:05:24    at groovy.lang.GroovyShell.parse(GroovyShell.java:700)
11:05:24    at org.jenkinsci.plugins.workflow.cps.CpsGroovyShell.doParse(CpsGroovyShell.java:142)
11:05:24    at org.jenkinsci.plugins.workflow.cps.CpsGroovyShell.reparse(CpsGroovyShell.java:127)
11:05:24    at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.parseScript(CpsFlowExecution.java:571)
11:05:24    at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.start(CpsFlowExecution.java:523)
11:05:24    at org.jenkinsci.plugins.workflow.job.WorkflowRun.run(WorkflowRun.java:337)
11:05:24    at hudson.model.ResourceController.execute(ResourceController.java:97)
11:05:24    at hudson.model.Executor.run(Executor.java:429)
11:05:24  
11:05:24  1 error
11:05:24  
11:05:24    at org.codehaus.groovy.control.ErrorCollector.failIfErrors(ErrorCollector.java:310)
11:05:24    at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1085)
11:05:24    at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:603)
11:05:24    at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:581)
11:05:24    at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:558)
11:05:24    at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:298)
11:05:24    at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:268)
11:05:24    at groovy.lang.GroovyShell.parseClass(GroovyShell.java:688)
11:05:24    at groovy.lang.GroovyShell.parse(GroovyShell.java:700)
11:05:24    at org.jenkinsci.plugins.workflow.cps.CpsGroovyShell.doParse(CpsGroovyShell.java:142)
11:05:24    at org.jenkinsci.plugins.workflow.cps.CpsGroovyShell.reparse(CpsGroovyShell.java:127)
11:05:24    at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.parseScript(CpsFlowExecution.java:571)
11:05:24    at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.start(CpsFlowExecution.java:523)
11:05:24    at org.jenkinsci.plugins.workflow.job.WorkflowRun.run(WorkflowRun.java:337)
11:05:24    at hudson.model.ResourceController.execute(ResourceController.java:97)
11:05:24    at hudson.model.Executor.run(Executor.java:429)
11:05:24  Finished: FAILURE

使用以下版本
操作系统：

Ubuntu 18.04.1

詹金斯：

2.263.4

Java：

1.8.0_181

（主从）
将

JAVA_ARGS="-Xmx2048m"

设置为

/etc/default/jenkins

（主）

我该如何解决这个问题？

Answer 1

Java 对字节码有 64K 大小限制。这不是詹金斯的问题。为了解决这个问题，您应该将管道分解为方法。有一个很好的例子这里。

Answer 2

是的，这是一个限制，您必须使用共享库/将它们划分为方法来解决这个问题。 共享库参考： https://www.jenkins.io/doc/book/pipeline/shared-libraries/

解决方案：使用您的jenkins文件来定义阶段，所有方法/功能都在共享库中实现，该库将仅从您的jenkins文件中调用。

实现示例如下所示。 创建一个名为：sharedlibraries（groovy 文件）的文件

#!groovy
// Write or add Functions(definitions of stages) which will be called from your jenkins file
def Create_AMI(PROJECT_NAME, ENV_NAME)
 {
     echo ENV_NAME
     sh "packer build jenkins/${PROJECT_NAME}/${PROJECT_NAME}-ami.json"
     // You can also set the environment below example:
     env.ENV_NAME ="dev"
 }

return this

在你的 Jenkinsfile 中写入以下代码：

// Global variable is used to get data from groovy file(shared library)
def stagelibrary
stage('Create New AMI') {   
            steps {
              script {
                        // Load Shared library Groovy file stagelibraries.Give your path of stagelibraries file whic is created
                        stagelibrary = load 'C:\\Jenkins\\stagelibraries'
                        // Execute Create_AMI function. You can add if else conditions over here, based on your branches. But am not sure of your conditions.
                        // You can also pass your environment variable 
                        // in the Crete_AMI function using env.<YOURENVVARIABLE>
                        stagelibrary.Create_AMI(PROJECT_NAME,env.ENV_NAME)       
                      }               
                  }
        }

这只是一个示例，向您展示如何将功能划分为共享库，并且不会给您带来与代码限制相关的错误。

Answer 3

根据我最近在这个 Jenkins 问题上的经验，我想分享一下我目前适用于我的案例的方法：

文件名：shellScripts.groovy

def call(Map parameters = [:]) {
  // ... other groovy function ...

  def blockOfShellScriptsCodeLogic = {
    // ... YOUR CUSTOMISED SHELL COMMANDS ... 
    // For example:
    sh 'shell commend one'
    sh 'shell commend two'
  }

  // ... other groovy function ...
}

return [
  // ... other definitions ...
  blockOfShellScriptsCodeLogic: blockOfShellScriptsCodeLogic
]

然后，例如，当我们转到包含

pipeline {}

的管道文件时，我们可以执行以下操作：

文件名：runPipeline.groovy

def call(Map parameters = [:]) {
  // ... other sections ...

  pipeline {
    def runShellScripts = shellScripts() // because above groovy file is named as shellScripts

    environment { ... }
    agent { ... }
    
    stages {
      stage('YOUR STAGE NAME') {
        steps {
          container('docker') { // any container, this is just an example, eg: we can use Jenkins docker container
            script {
              runShellScripts.blockOfShellScriptsCodeLogic()
            }
          }
        }
      }
    }

    // ...
    
    post { ... }
  }

  // ... other sections ...
}

请参考这篇非常好的参考资料：参考文章