cicd

def label = "slave-${UUID.randomUUID().toString()}"

def helmLint(String chartDir) {
    println "校验 chart 模板"
    sh "helm lint ${chartDir}"
}

def helmInit() {
  println "初始化 helm client"
  sh "helm init --client-only --stable-repo-url https://mirror.azure.cn/kubernetes/charts/"
}

def helmRepo(Map args) {
  println "添加 course repo"
  sh "helm repo add --username ${args.username} --password ${args.password} course https://registry.qikqiak.com/chartrepo/course"

  println "更新 repo"
  sh "helm repo update"

  println "获取 Chart 包"
  sh """
    helm fetch course/polling
    tar -xzvf polling-0.1.0.tgz
    """
}

def helmDeploy(Map args) {
    helmInit()
    helmRepo(args)

    if (args.dry_run) {
        println "Debug 应用"
        sh "helm upgrade --dry-run --debug --install ${args.name} ${args.chartDir} --set persistence.persistentVolumeClaim.database.storageClass=database --set api.image.repository=${args.image} --set api.image.tag=${args.tag} --set imagePullSecrets[0].name=myreg --namespace=${args.namespace}"
    } else {
        println "部署应用"
        sh "helm upgrade --install ${args.name} ${args.chartDir} --set persistence.persistentVolumeClaim.database.storageClass=database --set api.image.repository=${args.image} --set api.image.tag=${args.tag} --set imagePullSecrets[0].name=myreg --namespace=${args.namespace}"
        echo "应用 ${args.name} 部署成功. 可以使用 helm status ${args.name} 查看应用状态"
    }
}


podTemplate(label: label, containers: [
  containerTemplate(name: 'maven', image: 'maven:3.6-alpine', command: 'cat', ttyEnabled: true),
  containerTemplate(name: 'docker', image: 'docker', command: 'cat', ttyEnabled: true),
  containerTemplate(name: 'helm', image: 'cnych/helm', command: 'cat', ttyEnabled: true)
], volumes: [
  hostPathVolume(mountPath: '/root/.m2', hostPath: '/var/run/m2'),
  hostPathVolume(mountPath: '/home/jenkins/.kube', hostPath: '/root/.kube'),
  hostPathVolume(mountPath: '/var/run/docker.sock', hostPath: '/var/run/docker.sock')
]) {
  node(label) {
    def myRepo = checkout scm
    def gitCommit = myRepo.GIT_COMMIT
    def gitBranch = myRepo.GIT_BRANCH
    def imageTag = sh(script: "git rev-parse --short HEAD", returnStdout: true).trim()
    def dockerRegistryUrl = "139.159.xx.xx"
	def imageEndpoint = "course/polling-app-server"
    def image = "${dockerRegistryUrl}/${imageEndpoint}"

    stage('单元测试') {
      echo "1.测试阶段"
    }
    stage('代码编译打包') {
      try {
        container('maven') {
          echo "2. 代码编译打包阶段"
          sh "mvn clean package -Dmaven.test.skip=true"
        }
      } catch (exc) {
        println "构建失败 - ${currentBuild.fullDisplayName}"
        throw(exc)
      }
    }
    stage('构建 Docker 镜像') {
      withCredentials([[$class: 'UsernamePasswordMultiBinding',
        credentialsId: 'dockerhub',
        usernameVariable: 'DOCKER_HUB_USER',
        passwordVariable: 'DOCKER_HUB_PASSWORD']]) {
          container('docker') {
            echo "3. 构建 Docker 镜像阶段"
            sh """
              docker login ${dockerRegistryUrl} -u ${DOCKER_HUB_USER} -p ${DOCKER_HUB_PASSWORD}
              docker build -t ${image}:${imageTag} .
              docker push ${image}:${imageTag}
              """
          }
      }
    }
   stage('运行 Helm') {
      withCredentials([[$class: 'UsernamePasswordMultiBinding',
        credentialsId: 'dockerhub',
        usernameVariable: 'DOCKER_HUB_USER',
        passwordVariable: 'DOCKER_HUB_PASSWORD']]) {
          container('helm') {
            // todo，可以做分支判断
            echo "4. [INFO] 开始 Helm 部署"
            helmDeploy(
                dry_run     : false,
                name        : "polling",
                chartDir    : "polling",
                namespace   : "course",
                tag         : "${imageTag}",
                image       : "${image}",
                username    : "${DOCKER_HUB_USER}",
                password    : "${DOCKER_HUB_PASSWORD}"
            )
            echo "[INFO] Helm 部署应用成功..."
          }
      }
  }
}
}