如何在Jenkins声明管道中处理夜间构建

Question

我的存储库中有一个带有Jenkinsfile的多分支管道，我能够拥有我的CI工作流程（构建

pipeline {
    ...
    triggers {
        gitlab(triggerOnPush: true, triggerOnMergeRequest: true, branchFilterType: 'All')
    }
    ...
}

为了设置我的夜间构建，我添加了

triggers {
    ...
    cron('H H * * *')
}

但是现在，如果我们只是在晚上构建由cron表达式触发的作业，如何执行分析步骤呢？

我的简化构建阶段如下所示：

stage('Build & Tests & Analysis') {
    // HERE THE BEGIN SONAR ANALYSIS  (to be executed on nightly builds)
    bat 'msbuild.exe ...'
    bat 'mstest.exe ...'
    // HERE THE END SONAR ANALYSIS (to be executed on nightly builds)
}

Answer 1

对我来说，最简单的方法是在构建触发器中定义cron，并使用＜code＞when表达式＜/code＞在夜间阶段验证小时数：

pipeline {
    agent any
    triggers {
        pollSCM('* * * * *') //runs this pipeline on every commit
        cron('30 23 * * *') //run at 23:30:00 
    }

    stages {
        stage('nightly') {
            when {//runs only when the expression evaluates to true
                expression {//will return true when the build runs via cron trigger (also when there is a commit at night between 23:00 and 23:59)
                    return Calendar.instance.get(Calendar.HOUR_OF_DAY) in 23
                }
            }

            steps {
                echo "Running the nightly stage only at night..."
            }
        }
    }
}

Answer 2

这在声明性管道中工作

when {
    triggeredBy 'TimerTrigger'
}

Answer 3

有获取构建触发器信息的方法，这里描述：https://jenkins.io/doc/pipeline/examples/#get-build-cause

您也可以检查这一点：如何在工作流中获取$CAUSE

您的案例非常好的参考是https://hopstorawpointers.blogspot.com/2016/10/performing-nightly-build-steps-with.html.下面是来自该源的函数，它完全符合您的需要：

// check if the job was started by a timer
@NonCPS
def isJobStartedByTimer() {
    def startedByTimer = false
    try {
        def buildCauses = currentBuild.rawBuild.getCauses()
        for ( buildCause in buildCauses ) {
            if (buildCause != null) {
                def causeDescription = buildCause.getShortDescription()
                echo "shortDescription: ${causeDescription}"
                if (causeDescription.contains("Started by timer")) {
                    startedByTimer = true
                }
            }
        }
    } catch(theError) {
        echo "Error getting build cause"
    }

    return startedByTimer
}