pipeline {
  agent {
    label "swarm"
  }
  environment {
    DOCKER_IMAGE='iru/node'
    DOCKER_CERT_PATH='/run/secrets/swarm'
    DHOST='tcp://iru-swarm.infoclinica.lan:2376 DOCKER_TLS_VERIFY=1'
    DEV_REGISTRY='dev-registry.infoclinica.ru:5000'
    PROD_REGISTRY='registry.infoclinica.ru:5000'
    SWARM_GIT_URL='ssh://git@git.sdsys.ru:8022/iru/stack-deploy.git'
    SWARM_GIT_NAME='stack-deploy'
    JENKINS_MAIL='jenkins@sdsys.ru'
    NEWTAG=''
  }
  parameters {
    string(
      name: "service_update",
      defaultValue: "info_node info_node-api",
      description: "Service name to update."
    )
    string(
      name: "mailto",
      defaultValue: "admin@sdsys.ru",
      description: "Email which has to be notified."
    )
  }
  stages {
    stage("Tagging in Git"){
      steps{
        withCredentials([sshUserPrivateKey(credentialsId: 'provision', keyFileVariable: 'GIT_SSH_KEY', passphraseVariable: '', usernameVariable: 'GIT_SSH_USERNAME')]) {
          sh """GIT_SSH_COMMAND='ssh -i ${GIT_SSH_KEY} -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no' \
                  git clone ${SWARM_GIT_URL}
                cd ${SWARM_GIT_NAME}
                cp -f tags/${DOCKER_IMAGE}.dev-version tags/${DOCKER_IMAGE}.version
                git add -A
                
                git config --global user.email "${JENKINS_MAIL}"
                git config --global user.name "Jenkins"
                git commit -m 'Version update'| grep ''     # Shield ourself from non-zero exit code from 'git commit' command
                GIT_SSH_COMMAND='ssh -i ${GIT_SSH_KEY} -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no' \
                  git push origin master
                ls"""
        }
      }
    }
    stage("Tagging and pushing to prod registry"){
      steps{
        script {
          NEWTAG=sh (script: "cat ${SWARM_GIT_NAME}/tags/${DOCKER_IMAGE}.version", returnStdout: true).trim()
          sh """docker pull ${DEV_REGISTRY}/${DOCKER_IMAGE}:${NEWTAG}
                docker tag ${DEV_REGISTRY}/${DOCKER_IMAGE}:${NEWTAG} ${PROD_REGISTRY}/${DOCKER_IMAGE}:${NEWTAG}
                docker tag ${DEV_REGISTRY}/${DOCKER_IMAGE}:${NEWTAG} ${PROD_REGISTRY}/${DOCKER_IMAGE}:latest
                docker push ${PROD_REGISTRY}/${DOCKER_IMAGE}:${NEWTAG}
                docker push ${PROD_REGISTRY}/${DOCKER_IMAGE}:latest
             """
        }
      }
    }
    stage("Updating service"){
      steps{
        script {
          for (String item : service_update.split()) {
            echo "Updating ${item}"
            try{
              sh "DOCKER_HOST=${DHOST} docker service update ${item} --image ${PROD_REGISTRY}/${DOCKER_IMAGE}:${NEWTAG}"
            }
            catch(err){
              echo "Recovering service $item"
              sh "DOCKER_HOST=${DHOST} docker service rollback ${item}"
              throw err
            }
          }
        }
      }
    }
  }
  post {
    always {
      echo "CleaningUp work diretory"
      deleteDir()
      sh "docker image rm -f `docker image ls -q ${PROD_REGISTRY}/${DOCKER_IMAGE}:${NEWTAG}`"
    }
    failure {
      mail charset: 'UTF-8',
           subject: "Jenkins build ERROR",
           mimeType: 'text/html',
           to: "${mailto}",
           body: "<b>ATTENTION!!!</b> <b><br> Jenkins job failed.\n\n <b><br>Project Name:</b> ${env.JOB_NAME} <b><br>\nBuild Number:</b> ${env.BUILD_NUMBER} <b><br>\nURL Build:</b> ${RUN_DISPLAY_URL}"
    }
    success {
      mail charset: 'UTF-8',
           subject: "Jenkins build SUSCCESS",
           mimeType: 'text/html',
           to: "${mailto}",
           body: "<b>Congradulations!!!</b> <b><br> Jenkins job succefully finished.\n\n <b><br>Project Name:</b> ${env.JOB_NAME} <b><br>\nBuild Number:</b> ${env.BUILD_NUMBER} <b><br>\nURL Build:</b> ${RUN_DISPLAY_URL}"
    }
  }
}