pipeline {
  agent {
    label "swarm"
  }
  options {
    disableConcurrentBuilds()
    timeout(time: 20, unit: 'MINUTES')
  }
  environment {
    DOCKER_IMAGE='iru/promo'
    SWARM_GIT_URL='ssh://git@git.sdsys.ru:8022/iru/stack-deploy.git'
    SWARM_GIT_NAME='stack-deploy'
    JENKINS_MAIL='jenkins@sdsys.ru'
    PACKAGE_NAME='web-registry-promo'
    DOCKER_CERT_PATH='/run/secrets/swarm'
    DHOST='tcp://dev-iru-swarm.infoclinica.lan:2376 DOCKER_TLS_VERIFY=1'
    DOCKER_REGISTRY='dev-registry.infoclinica.ru:5000'
    NEWTAG=''
  }
  parameters {
    string(
      name: "branch",
      defaultValue: "release",
      description: "Which branch to use"
    )
    string(
      name: "service_update",
      defaultValue: "info_promo",
      description: "Services to update."
    )
    string(
      name: "mailto",
      defaultValue: "admin@sdsys.ru",
      description: "Email which has to be notified."
    )
  }
  stages {
    stage("Build") {
      steps {
        echo "Building ${DOCKER_REGISTRY}/${DOCKER_IMAGE}:${BUILD_NUMBER}."
        withCredentials([sshUserPrivateKey(credentialsId: 'provision', keyFileVariable: 'GIT_SSH_KEY', passphraseVariable: '', usernameVariable: 'GIT_SSH_USERNAME')]) {
          sh """set +x
                cat ${GIT_SSH_KEY} > ${WORKSPACE}/id_rsa 
                chmod 600 ${WORKSPACE}/id_rsa
             """
        }
        sh "docker build --build-arg branch=${branch} --no-cache -t ${DOCKER_REGISTRY}/${DOCKER_IMAGE}:${BUILD_NUMBER} ."
        script {
           NEWTAG = sh(script: "docker run --rm ${DOCKER_REGISTRY}/${DOCKER_IMAGE}:${BUILD_NUMBER} cat /tmp/version 2> /dev/null", returnStdout: true).trim()
           NEWTAG = branch + "-" + NEWTAG + "_" + BUILD_NUMBER
           echo "NEWTAG is $NEWTAG"
        }
        sh "docker tag ${DOCKER_REGISTRY}/${DOCKER_IMAGE}:${BUILD_NUMBER} ${DOCKER_REGISTRY}/${DOCKER_IMAGE}:${NEWTAG}"
      }
    }
    stage("Publish") {
      steps {
        echo "Publishing ${DOCKER_REGISTRY}/${DOCKER_IMAGE}:${NEWTAG}"
        sh "docker push ${DOCKER_REGISTRY}/${DOCKER_IMAGE}:${NEWTAG}"
      }
    }
    stage("Update") {
      when { expression { service_update != "" } }
      steps {
        script {
          for (String item : service_update.split()) {
            echo "Updating ${item}"
            try{
               sh "DOCKER_HOST=${DHOST} docker service update ${item} --image ${DOCKER_REGISTRY}/${DOCKER_IMAGE}:${NEWTAG}"
            }
            catch(err){
               echo "Recovering service $item"
               sh "DOCKER_HOST=${DHOST} docker service rollback ${item}"
               throw err
            }
          }
        }
      }
    }
    stage("Tagging"){
      steps{
        echo "Setting latest tag"
        sh """docker tag ${DOCKER_REGISTRY}/${DOCKER_IMAGE}:${NEWTAG} ${DOCKER_REGISTRY}/${DOCKER_IMAGE}:latest
              docker push ${DOCKER_REGISTRY}/${DOCKER_IMAGE}:latest"""
        echo "Updating tag info in ${SWARM_GIT_NAME} repository"
        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}
                echo -n ${NEWTAG} > tags/${DOCKER_IMAGE}.dev-version
                git add -A
                git config --global user.email "${JENKINS_MAIL}"
                git config --global user.name "Jenkins"
                git commit -m 'Version update'
                GIT_SSH_COMMAND='ssh -i ${GIT_SSH_KEY} -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no' \
                  git push origin master
             """
        }
      }
    }
  }
  post {
    always {
      echo "CleaningUp work diretory"
      deleteDir()
      sh "docker image rm -f `docker image ls -q ${DOCKER_REGISTRY}/${DOCKER_IMAGE}:${BUILD_NUMBER}`"
    }
    failure {
      mail charset: 'UTF-8',
           subject: "Jenkins build ERROR",
           mimeType: 'text/html',
           to: "${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}"
    }
  }
}