Jenkinsfile

node {
  def dockerhubuser = 'vykozlov'
  def appName = 'tf-mnist-cd'
  def mainVer = "1.0"
  def imageTag = "${dockerhubuser}/${appName}:${env.BRANCH_NAME}-${mainVer}.${env.BUILD_NUMBER}-gpu"
  def k8sConfigMaster = "/home/jenkins/.kube/config.master"
  def jname = "jupyter-pass"
  def jpassfile = "./jpassword"  
  
  try {
      stage ('Clone repository') {
          checkout scm
      }

      stage('Build image') {
          sh("nvidia-docker build -t ${imageTag} .")
      }

      stage('Run tests') {
          //sh("nvidia-docker run ${imageTag} python tools/tf_vers.py")
          echo "Here should be some tests.."
      }

      stage('Push image to registry') {
          echo "${imageTag}"
          withCredentials([usernamePassword(credentialsId: 'dockerhub-vykozlov-credentials', usernameVariable: 'USERNAME', passwordVariable: 'PASSWORD')]) {
            sh '''
              docker login -u ${USERNAME} -p ${PASSWORD}
              '''
          }
          sh("docker push ${imageTag}")     
      }

      stage('Deploy Application') {
          switch (env.BRANCH_NAME) {
          // Roll out to production
            case "master":
                // Change deployed image in canary to the one we just built
                withCredentials([usernamePassword(credentialsId: 'jupyter-credentials', usernameVariable: 'USERNAME', passwordVariable: 'PASSWORD')]) {
                  //how to pass parameters here??
                  sh '''
                    echo -n ${PASSWORD} > ./jpassword
                    '''
                }
                sh("kubectl --kubeconfig=${k8sConfigMaster} create secret generic ${jname} --from-file=${jpassfile} --namespace=production --dry-run -o json >${jpassfile}.yaml")
                sh("kubectl --kubeconfig=${k8sConfigMaster} apply -f ${jpassfile}.yaml")
                sh("rm ${jpassfile} ${jpassfile}.yaml")
                sh("sed -i.bak 's#vykozlov/tf-mnist-cd:1.5.0-gpu#${imageTag}#' ./k8s/production/*.yaml")
                sh("kubectl --kubeconfig=${k8sConfigMaster} --namespace=production apply -f k8s/services/tf-mnist-cd-svc.yaml")
                sh("kubectl --kubeconfig=${k8sConfigMaster} --namespace=production apply -f k8s/production/")
                break

            // Roll out a dev environment
            default:
                // Create namespace if it doesn't exist
                sh("kubectl --kubeconfig=${k8sConfigMaster} get ns ${env.BRANCH_NAME} || kubectl --kubeconfig=${k8sConfigMaster} create ns ${env.BRANCH_NAME}")
                withCredentials([usernamePassword(credentialsId: 'jupyter-credentials', usernameVariable: 'USERNAME', passwordVariable: 'PASSWORD')]) {
                  sh '''
                    echo -n ${PASSWORD} > ./jpassword
                    '''
                }
                sh("kubectl --kubeconfig=${k8sConfigMaster} create secret generic ${jname} --from-file=${jpassfile} --namespace=${env.BRANCH_NAME} --dry-run -o json >${jpassfile}.yaml")
                sh("kubectl --kubeconfig=${k8sConfigMaster} apply -f ${jpassfile}.yaml")
                sh("rm ${jpassfile} ${jpassfile}.yaml")
                // Don't use public load balancing for development branches
                sh("sed -i.bak 's#vykozlov/tf-mnist-cd:1.5.0-gpu#${imageTag}#' ./k8s/dev/*.yaml")
                sh("kubectl --kubeconfig=${k8sConfigMaster} --namespace=${env.BRANCH_NAME} apply -f k8s/services/tf-mnist-cd-dev-svc.yaml")
                sh("kubectl --kubeconfig=${k8sConfigMaster} --namespace=${env.BRANCH_NAME} apply -f k8s/dev/")
                //echo 'To access your environment run `kubectl proxy`'
                //echo "Then access your service via http://localhost:8001/api/v1/proxy/namespaces/${env.BRANCH_NAME}/services/${feSvcName}:80/"
          }
      }

      stage('Post Deploymnet') {
          // delete docker image from Jenkins site
          sh("docker rmi ${imageTag}")
      }
  } catch (e) {
    // If there was an exception thrown, the build failed
    currentBuild.result = "FAILED"
    throw e
  } finally {
    // Success or failure, always send notifications
    notifyBuild(currentBuild.result)
  }
}

def notifyBuild(String buildStatus = 'STARTED') {
    // build status of null means successful
    buildStatus =  buildStatus ?: 'SUCCESSFUL'
 
    // Default values
    def subject = "${buildStatus}: Job '${env.JOB_NAME} [${env.BUILD_NUMBER}]'"
    def summary = "${subject} (${env.BUILD_URL})"
    def details = """<p>STARTED: Job '${env.JOB_NAME} [${env.BUILD_NUMBER}]':</p>
      <p>Check console output at "<a href="${env.BUILD_URL}">${env.JOB_NAME} [${env.BUILD_NUMBER}]</a>"</p>"""

    emailext (
        subject: subject,
        body: details,
        recipientProviders: [[$class: 'DevelopersRecipientProvider']]
    )
}