deploy.yml

name: Backend CD

on:
  pull_request:
    types: [closed]

jobs:
  build-and-push:
    if: |
      github.event.pull_request.merged == true &&
      github.event.pull_request.base.ref == 'main' &&
      contains(github.event.pull_request.labels.*.name, '🎅🏼deploy')

    runs-on: ubuntu-latest  

    steps:
    - name: Checkout Repository
      uses: actions/checkout@v2  

    - name: JDK 17을 설치합니다
      uses: actions/setup-java@v4
      with:
        java-version: '17'
        distribution: 'corretto'

    - name: Install redis
      run: sudo apt-get install -y redis-tools redis-server

    - name: Verify that redis is up
      run: redis-cli ping

    - name: Gradle 명령 실행을 위한 권한을 부여합니다
      run: chmod +x gradlew

    - name: Gradle build를 수행합니다
      run: ./gradlew build

    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v1  

    - name: 도커 로그인
      uses: docker/login-action@v1
      with:
        username: ${{ secrets.DOCKERHUB_USERNAME }}  
        password: ${{ secrets.DOCKERHUB_TOKEN }}     

    - name: 도커 이미지 build 후 push
      uses: docker/build-push-action@v2
      with:
        context: .
        file: Dockerfile  
        push: true  
        tags: ${{ secrets.DOCKERHUB_USERNAME }}/pct-backend:${{ github.sha }}
        platforms: linux/amd64
    
  deploy-to-ec2:
    runs-on: ubuntu-latest
    needs: build-and-push
    steps:
    - name: Install SSH
      run: sudo apt update && sudo apt install -y openssh-client

    - name: EC2 접속 및 배포 진행
      uses: appleboy/ssh-action@master
      with:
        host: ${{ secrets.EC2_HOST }}
        username: ${{ secrets.EC2_USERNAME }}
        key: ${{ secrets.EC2_PRIVATE_KEY }}
        script: |
          export COMMIT_VERSION=${{ github.sha }} &&
          ./deploy.sh

  notify-slack:
    runs-on: ubuntu-latest
    needs: deploy-to-ec2
    
    steps:
      - name: 배포 성공시 Slack으로 알립니다
        uses: 8398a7/action-slack@v3
        with:
          author_name: 배포 성공
          status: ${{ job.status }}
          fields: repo,message,commit,author,action,eventName,ref,workflow # selectable (default: repo,message)
        env:
          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }} # required
        if: always() # Pick up events even if the job fails or is canceled.