git - Jenkins 管道抛出 java.io.NotSerializableException : org. jenkinsci.plugins.workflow.job.WorkflowRun 即使使用 @NonCPS

Question

代码相当简单，我只想要一个 rev-list 发布到 slack。但是导致我出现问题的部分是当我实际上试图从 git 获取 rev-list 时。

问题代码

@NonCPS
def getRevisionList(currentCommit, lastSuccessfulCommit) {
     def commits = sh(
        script: "git rev-list $currentCommit $lastSuccessfulCommit",
        returnStdout: true
    ).split('\n')
    echo "$commits"
}

完整代码:

pipeline {
    environment {
      failureMessage = ""
    }

  agent {
        node {
            label 'gsacsp-build02.reisys.com'
        }
    }
    stages {
        stage('Parse Commits') {
            steps {
                script {
                    def currentBuild = currentBuild.rawBuild
                    def currentCommit = commitHashForBuild(currentBuild)
                    def lastSuccessfulCommit =  getLastSuccessfulCommit()

                    getRevisionList(currentCommit, lastSuccessfulCommit)
                }
            }
        }
    }
    post {
        always {
            withCredentials([string(credentialsId: 'BOT_SLACK_HOOK', variable: 'BOT_SLACK_HOOK')]) {
               script {
                    failureMessage = readFile "jenkinshelpers/slackfailuremessage.json"
                    sh "curl -X POST -H 'Content-type: application/json' --data '$failureMessage' $BOT_SLACK_HOOK"
                }
            }
        }
    }
}

//Groovy Helper Methods

@NonCPS
def getRevisionList(currentCommit, lastSuccessfulCommit) {
     def commits = sh(
        script: "git rev-list $currentCommit $lastSuccessfulCommit",
        returnStdout: true
    ).split('\n')
    echo "$commits"
}

@NonCPS
def getLastSuccessfulCommit() {
  def lastSuccessfulHash = null
  def lastSuccessfulBuild = currentBuild.rawBuild.getPreviousSuccessfulBuild()
  if ( lastSuccessfulBuild ) {
    lastSuccessfulHash = commitHashForBuild( lastSuccessfulBuild )
  }
  return lastSuccessfulHash
}

@NonCPS
def commitHashForBuild(build) {
    def scmAction = build?.actions.find { action -> action instanceof jenkins.scm.api.SCMRevisionAction }
    return scmAction?.revision?.hash
}

Jenkins 给我的错误是这样的:

an exception which occurred:
in field com.cloudbees.groovy.cps.impl.BlockScopeEnv.locals
in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@76bde0fe
in field com.cloudbees.groovy.cps.impl.CallEnv.caller
in object com.cloudbees.groovy.cps.impl.FunctionCallEnv@662f031a
in field com.cloudbees.groovy.cps.Continuable.e
in object org.jenkinsci.plugins.workflow.cps.SandboxContinuable@1156ea7f
in field org.jenkinsci.plugins.workflow.cps.CpsThread.program
in object org.jenkinsci.plugins.workflow.cps.CpsThread@5bada334
in field org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.threads
in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@42bbb563
in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@42bbb563

导致:java.io.NotSerializableException:org.jenkinsci.plugins.workflow.job.WorkflowRun

更多或更少我遵循以下内容，但是我收到了错误。我试过以原来的方式运行它，但我也没有任何运气。

Jenkinsfile - get all changes between builds

Answer 1

您看到的异常是由以下行引起的:

def currentBuild = currentBuild.rawBuild

currentBuild.rawBuild 返回一个不可序列化的对象，因此必须在 @NonCPS 方法中调用以避免出现此异常。尝试简化您的辅助方法，以便它们访问 @NonCPS 中的 currentBuild 变量:

@NonCPS
def getRevisionList(currentCommit, lastSuccessfulCommit) {
     def commits = sh(
        script: "git rev-list $currentCommit $lastSuccessfulCommit",
        returnStdout: true
    ).split('\n')
    echo "$commits"
}

@NonCPS
def getLastSuccessfulCommit() {
  def lastSuccessfulHash = null
  def lastSuccessfulBuild = currentBuild.rawBuild.getPreviousSuccessfulBuild()
  if ( lastSuccessfulBuild ) {
    lastSuccessfulHash = commitHashForBuild( lastSuccessfulBuild )
  }
  return lastSuccessfulHash
}

@NonCPS
def commitHashForBuild() {
    def scmAction = currentBuild?.rawBuild?.actions?.find { action -> action instanceof jenkins.scm.api.SCMRevisionAction }
    return scmAction?.revision?.hash
}

currentBuild.rawBuild - a hudson.model.Run with further APIs, only for trusted libraries or administrator-approved scripts outside the sandbox; the value will not be Serializable so you may only access it inside a method marked @NonCPS

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Source: https://qa.nuxeo.org/jenkins/pipeline-syntax/globals#currentBuild