Jenkins 2 Pipleline的简单教程(二)
Jenkins Pipeline支持两种语法，一种Declarative Pipeline(声明式)，一种Scripted Pipeline(脚本式)。 声明式的Pipeline限制用户使用严格的预选定义的结构，是一种声明式的编程模型，对比脚本式的Pipeline学习起来更加简单；脚本式的Pipeline限制比较少，结构和语法的限制由Groovy本身决定，是一种命令式的编程模型。
关于Pipeline的语法在编写Pipeline的过程中，查看这里 Pipeline Syntax 就够了。
编写第一个Declarative Pipeline:
pipeline {
agent { label 'jenkins-slave' }
stages {
stage('build') {
steps {
sh 'echo hello'
}
}
}
}
运行多个Step的Pipeline：
pipeline {
agent { label 'jenkins-slave' }
stages {
stage('build') {
steps {
sh 'echo step1'
sh '''
echo step2-1
echo step2-2
'''
}
}
}
}
retry和timeout wrap step:
pipeline {
agent { label 'jenkins-slave' }
stages {
stage('build') {
steps {
retry(3) {
sh 'echo deploy'
}
timeout(time: 5, unit: 'SECONDS') {
sh 'echo healthcheck'
sh 'sleep 4'
}
}
}
}
}
post完成：
pipeline {
agent { label 'jenkins-slave' }
stages {
stage('Test') {
steps {
sh 'echo "Fail!"; exit 1'
}
}
}
post {
always {
echo 'This will always run'
}
success {
echo 'This will run only if successful'
}
failure {
echo 'This will run only if failed'
}
unstable {
echo 'This will run only if the run was marked as unstable'
}
changed {
echo 'This will run only if the state of the Pipeline has changed'
echo 'For example, if the Pipeline was previously failing but is now successful'
}
}
}
设置环境变量：
pipeline {
agent { label 'jenkins-slave' }
environment {
DISABLE_AUTH = 'true'
DB_ENGINE = 'sqlite'
}
stages {
stage('Build') {
steps {
sh 'printenv'
}
}
}
}
将credentials设置为环境变量值：
pipeline {
agent { label 'jenkins-slave' }
environment {
SONAR_LOGIN = credentials('sonarLogin')
}
stages {
stage('Build') {
steps {
sh 'printenv'
}
}
}
}
清理和通知：
pipeline {
agent { label 'jenkins-slave' }
stages {
stage('build') {
steps {
timeout(time: 1, unit: 'SECONDS') {
sh 'sleep 2'
}
}
}
}
post {
failure {
mail to: 'team@example.com',
subject: "Failed Pipeline: ${currentBuild.fullDisplayName}",
body: "Something is wrong with ${env.BUILD_URL}"
}
}
}
参考
- Jenkins pipeline document
- Pipeline Syntax
- Pipeline Steps Reference
- Pipeline: Basic Steps
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