Jenkins File Examples

https://www.notion.so/Jenkins-File-Examples-bb0efd5ea63e41699913260f81ad7219

Parameter Definitions

Scripted

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properties([
    parameters([
        string(name: 'USERNAME', defaultValue: 'admin', description: 'Enter your username'),
        booleanParam(name: 'ENABLE_FEATURE', defaultValue: false, description: 'Enable experimental feature'),
        choice(name: 'DEPLOY_ENV', choices: 'dev\nqa\nprod', description: 'Choose deployment environment')
    ])
])

node {
    echo "USERNAME: ${params.USERNAME}"
    echo "ENABLE_FEATURE: ${params.ENABLE_FEATURE}"
    echo "DEPLOY_ENV: ${params.DEPLOY_ENV}"
}

Declarative

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pipeline {
    agent any
    parameters {
        string(name: 'VERSION', defaultValue: '1.0.0', description: 'Version to deploy')
        booleanParam(name: 'CONFIRM', defaultValue: true, description: 'Confirm the deployment')
        choice(name: 'ENV', choices: ['staging', 'production'], description: 'Environment to deploy to')
    }
    stages {
        stage('Print Params') {
            steps {
                echo "Version: ${params.VERSION}"
                echo "Confirm: ${params.CONFIRM}"
                echo "Environment: ${params.ENV}"
            }
        }
    }
}

Parameter Usage

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node {
    print '✋' + params
    print params.anything_to_undefined     // output: null
    if (params.MultiLines) {
        params.MultiLines.split("\\r?\\n").each {
            if (it.trim()) {
                echo '✋-->' + it
            }
        }
    }
    // clean workspace
    cleanWs()
    try {
        docker.image('node:20').inside('--network host') {
            stage("Source code") {
                checkout([
                    $class: 'GitSCM',
                    branches: [[name: '*/${Git_Branch}']],
                    userRemoteConfigs: [[
                        url: 'git@github.com:bndynet/typescript-lib-starter.git',
                        credentialsId: '${Cred_ID}'
                    ]],
                    extensions: [
                        [$class: 'CloneOption', depth: 1, noTags: false, shallow: true],
[$class: 'CheckoutOption', timeout: 30]
                    ]
                ])
            }
            stage('Prepare') {
                sh """
					echo "================================"
					printenv | sort
					echo "================================"
				"""
                sh 'npm i'
            }
            stage('Build') {
                withEnv(['my_name=bing']) {
                    // TODO
                    sh 'Hi ${my_name}.'
                }
            }
            stage('Test') {
                if (params.Skip_Test != true) {
                    echo 'do test'
                } else {
                    echo 'Skip test'
                }
            }
            stage('Deploy') {
                if (params.Skip_Deploy != true) {
                    // TODO
                    echo 'do deploy'
                } else {
                    echo 'Skip deploy'
                }
            }
            stage('Deploy to production') {
                def toProdParams
                def didTimeout = false
                try {
                    timeout(time: 15, unit: 'SECONDS') {
                        // change to a convenient timeout for you
                        toProdParams = input(
                            id: 'deployToProd', message: 'Deploy to production?', parameters: [
                                choice(choices: ['prod-a.com/api', 'prod-b.com/api'], description: 'Backend endpoint to connect', name: 'Backend_Uri'),
                                booleanParam(defaultValue: false, description: 'Archive this package', name: 'Archive')
                            ]
                        )
                    }
                } catch (err) {
                    // timeout reached or input false
                    // def user = err.getCauses()[0].getUser() // required administrator
                    //if('SYSTEM' == user.toString()) { // SYSTEM means timeout.
                    didTimeout = true
                    //} else {
                    //toProd = false
                    //echo "Aborted by: [${user}]"
                    //}
                }
                echo '✋Your choice: ' + toProdParams // null if timeout
                if (toProdParams) {
                    echo toProdParams.Backend_Uri
                }
                if (didTimeout) {
                    // do something on timeout
                    echo "no input was received before timeout"
                } else if (toProdParams) {
                    // do something
                    echo "Deployed to production."
                } else {
                    // do something else
                    echo "Skip deployment to production."
                }
            }
        }
    } catch (error) {
        echo """❗Exception thrown: 
    ${error.class}
    ${error.message}
    """
        // error.printStackTrace() // required administrator
        currentBuild.result = 'FAILURE'
    } finally {
        if (currentBuild.result == 'SUCCESS') {
            // TODO
        } else {
            // TODO
        }
        echo currentBuild.result
    }
}

Docker in Node

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node ('your-server-node-label') {
    stage('Test') {
        docker.image('node:7-alpine').withRun() {
            c -> sh 'node --version'
        }
    }
}

Maven and Deploy

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pipeline {
    agent any

    tools { 
        maven 'Maven 3.5'
    }

    environment { 
        APP_NAME     = 'wf'
        DEPLOY_TO    = '../../../../websites/demo/'
        EMAIL_RECIPIENTS = 'zb@bndy.net'
        HAS_DEPLOYMENT   = 'false'
    }

    stages {
        stage('Prepare') {
            steps {
                updateGithubStatus("PENDING", "Begin to build");
                //sh 'printenv'
                sh 'java -version'
                sh 'mvn -v'
                sh 'mkdir -p ../../email-templates/ && \\cp ./jenkins/my-groovy-html.template ../../email-templates/my-groovy-html.template'
            }
        }
        stage('Build') {
            steps {
                echo 'Building...'
                sh 'mvn -B -DskipTests clean package' 
            }
        }
        stage('Test') {
            steps {
                echo 'Skip tests'
            }
        }
        stage('Deploy') {
            when {
                // following expression is just available for multi-branch project
                branch 'master'
            }
            steps {
                echo 'Deploying....'
                sh 'rm -f ${DEPLOY_TO}/${APP_NAME}.war'
                sh 'rm -Rf $DEPLOY_TO/${APP_NAME}'
                sh 'mv ./target/wf-*.war ${DEPLOY_TO}/${APP_NAME}.war'
                script {
                    HAS_DEPLOYMENT = 'true'
                }
            }
        }
    }
    
    post {
        success {
            updateGithubStatus("SUCCESS", "Build complete");
            sendEmail("SUCCESS");
        }
        unstable {
            updateGithubStatus("UNSTABLE", "Build complete");
            sendEmail("UNSTABLE");
        }
        failure {
            updateGithubStatus("FAILURE", "Build complete");
            sendEmail("FAILURE");
        }
    }
}

// get change log to be send over the mail
@NonCPS
def getChangeString() {
    MAX_MSG_LEN = 100
    def changeString = ""

    echo "Gathering SCM changes"
    def changeLogSets = currentBuild.changeSets
    for (int i = 0; i < changeLogSets.size(); i++) {
        def entries = changeLogSets[i].items
        for (int j = 0; j < entries.length; j++) {
            def entry = entries[j]
            truncated_msg = entry.msg.take(MAX_MSG_LEN)
            changeString += "<li>${truncated_msg} [${entry.author}]</li>"
        }
    }

    if (!changeString) {
        changeString = "<li>No new changes</li>"
    }
    return changeString
}

def sendEmail(status) {
    def subject = "[" + status + "] ${currentBuild.fullDisplayName}"
    if (HAS_DEPLOYMENT == 'true') {
        subject += " - deployed"
    }

    // Default Email Notification Plugin: email(...), but below supports html
        emailext(
	mimeType: "text/html",
        to: "$EMAIL_RECIPIENTS",
        subject: "${subject}",
	body: '''${SCRIPT, template="my-groovy-html.template"}''',
        //body: "Changes:<ul>" + getChangeString() + "</ul><br />Check console output at: ${BUILD_URL}console" + "<br />",
	recipientProviders: [[$class: 'CulpritsRecipientProvider'], [$class: 'RequesterRecipientProvider']]
    )
}

// set GitHub status
def getRepoURL() {
    sh "git config --get remote.origin.url > .git/remote-url"
    return readFile(".git/remote-url").trim()
}

def getCommitSha() {
    sh "git rev-parse HEAD > .git/current-commit"
    return readFile(".git/current-commit").trim()
}

def updateGithubStatus(status, message) {
    // status: pending, success, failure or error
    repoUrl = getRepoURL()
    commitSha = getCommitSha()

    step ([
        $class: 'GitHubCommitStatusSetter',
        reposSource: [$class: "ManuallyEnteredRepositorySource", url: repoUrl],
        commitShaSource: [$class: "ManuallyEnteredShaSource", sha: commitSha],
        errorHandlers: [[$class: 'ShallowAnyErrorHandler']],
        statusResultSource: [
            $class: 'ConditionalStatusResultSource',
            results: [
                [$class: 'AnyBuildResult', state: status, message: message]
            ]
        ]
    ])
}
This post is licensed under CC BY 4.0 by the author.