Jenkinsfile

@Library('common-shared') _

pipeline {
  agent {
    kubernetes {
      label 'kubedeploy-agent'
      yaml '''
      apiVersion: v1
      kind: Pod
      spec:
        containers:
        - name: kubectl
          image: eclipsefdn/kubectl:1.9-alpine
          command:
          - cat
          tty: true
          resources:
            limits:
              cpu: 1
              memory: 1Gi
        - name: jnlp
          resources:
            limits:
              cpu: 1
              memory: 1Gi
      '''
    }
  }

  parameters {
    string(name: 'hugo_version', defaultValue: '0.62.2', description: 'The Hugo version that will be used to build the website. Must match versions speficied on https://github.com/gohugoio/hugo/releases.')
    string(name: 'node_version', defaultValue: '10.15.3', description: 'The Node.js version that will be used to build the website. Must match versions specified on https://nodejs.org/en/download/releases/. It is adivsed to stick to LTS versions.')
  }

  environment {
    APP_NAME = 'events.eclipse.org'
    NAMESPACE = 'foundation-internal-webdev-apps'
    IMAGE_NAME = 'eclipsefdn/events.eclipse.org'
    CONTAINER_NAME = 'nginx'
    ENVIRONMENT = sh(
      script: """
        if [ "${env.BRANCH_NAME}" = "master" ]; then
          printf "production"
        else
          printf "${env.BRANCH_NAME}"
        fi
      """,
      returnStdout: true
    )
    TAG_NAME = sh(
      script: """
        GIT_COMMIT_SHORT=\$(git rev-parse --short ${env.GIT_COMMIT})
        if [ "${env.ENVIRONMENT}" = "" ]; then
          printf \${GIT_COMMIT_SHORT}-${env.BUILD_NUMBER}
        else
          printf ${env.ENVIRONMENT}-\${GIT_COMMIT_SHORT}-${env.BUILD_NUMBER}
        fi
      """,
      returnStdout: true
    )
    BASE_NGINX_IMAGE_TAG = sh(
      script: """
        if [ "${env.ENVIRONMENT}" = "production" ]; then 
          printf "stable-alpine"
        else
          printf "stable-alpine-for-staging"
        fi
      """,
      returnStdout: true
    )
  }

  options {
    buildDiscarder(logRotator(numToKeepStr: '10'))
  }

  triggers { 
    // build once a week to keep up with parents images updates
    cron('H H * * H') 
  }

  stages {
    stage('Build docker image') {
      agent {
        label 'docker-build'
      }
      steps {
        sh '''
          docker build --pull --build-arg NGINX_IMAGE_TAG="${BASE_NGINX_IMAGE_TAG}" --build-arg HUGO_VERSION="${hugo_version}" --build-arg NODE_VERSION="${node_version}" -t ${IMAGE_NAME}:${TAG_NAME} -t ${IMAGE_NAME}:latest .
        '''
      }
    }

    stage('Push docker image') {
      agent {
        label 'docker-build'
      }
      when {
        anyOf {
          environment name: 'ENVIRONMENT', value: 'production'
          environment name: 'ENVIRONMENT', value: 'staging'
        }
      }
      steps {
        withDockerRegistry([credentialsId: '04264967-fea0-40c2-bf60-09af5aeba60f', url: 'https://index.docker.io/v1/']) {
          sh '''
            docker push ${IMAGE_NAME}:${TAG_NAME}
            docker push ${IMAGE_NAME}:latest
          '''
        }
      }
    }

    stage('Deploy to cluster') {
      when {
        anyOf {
          environment name: 'ENVIRONMENT', value: 'production'
          environment name: 'ENVIRONMENT', value: 'staging'
        }
      }
      steps {
        container('kubectl') {
          withKubeConfig([credentialsId: '1d8095ea-7e9d-4e94-b799-6dadddfdd18a', serverUrl: 'https://console-int.c1-ci.eclipse.org']) {
            sh '''
              DEPLOYMENT="$(k8s getFirst deployment "${NAMESPACE}" "app=${APP_NAME},environment=${ENVIRONMENT}")"
              if [[ $(echo "${resource}" | jq -r 'length') -eq 0 ]]; then
                echo "ERROR: Unable to find a deployment to patch matching '${selector}' in namespace ${namespace}"
                exit 1
              else 
                DEPLOYMENT_NAME="$(echo "${DEPLOYMENT}" | jq -r '.metadata.name')"
                kubectl set image "deployment.v1.apps/${DEPLOYMENT_NAME}" -n "${NAMESPACE}" "${CONTAINER_NAME}=${IMAGE_NAME}:${TAG_NAME}" --record=true
                if ! kubectl rollout status "deployment.v1.apps/${DEPLOYMENT_NAME}" -n "${NAMESPACE}"; then
                  # will fail if rollout does not succeed in less than .spec.progressDeadlineSeconds
                  kubectl rollout undo "deployment.v1.apps/${DEPLOYMENT_NAME}" -n "${NAMESPACE}"
                  exit 1
                fi
              fi
            '''
          }
        }
      }
    }
  }

  post {
    always {
      deleteDir() /* clean up workspace */
      sendNotifications currentBuild
    }
  }
}