backend-cd-prod-v2.yml

name: backend-cd-prod-v2

on:
  pull_request:
    branches:
      - main
    types:
      - closed

env:
  DOCKERHUB_REPOSITORY: ody-official

jobs:
  build-and-push:
    if: github.event.pull_request.merged == true && (startsWith(github.event.pull_request.head.ref, 'release-be/') || startsWith(github.event.pull_request.head.ref, 'hotfix-be/'))

    runs-on: ubuntu-latest
    env:
      TZ: 'Asia/Seoul'

    defaults:
      run:
        working-directory: backend

    steps:
      - uses: actions/checkout@v4
        with:
          ref: main

      - name: Set up JDK 17
        uses: actions/setup-java@v4
        with:
          java-version: '17'
          distribution: 'temurin'

      - name: Check system timezone
        run: |
          echo "Current date and time: $(date)"
          echo "TZ environment variable: $TZ"

      - name: Setup Gradle
        uses: gradle/actions/setup-gradle@v3

      - name: Clean Build With Gradle Wrapper
        run: ./gradlew clean build

      - name: Publish Test Results
        uses: EnricoMi/publish-unit-test-result-action@v2
        if: always()
        with:
          files: ${{ github.workspace }}/backend/build/test-results/**/*.xml

      - name: JUnit Report Action
        uses: mikepenz/action-junit-report@v4
        if: always()
        with:
          report_paths: ${{ github.workspace }}/backend/build/test-results/**/*.xml

      - name: Setup Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_PASSWORD }}

      - name: Back Up Image For Rollback
        run: |
          docker pull ${{ secrets.DOCKERHUB_USERNAME }}/$DOCKERHUB_REPOSITORY:prod-latest || true
          docker tag ${{ secrets.DOCKERHUB_USERNAME }}/$DOCKERHUB_REPOSITORY:prod-latest ${{ secrets.DOCKERHUB_USERNAME }}/$DOCKERHUB_REPOSITORY:prod-previous || true
          docker push ${{ secrets.DOCKERHUB_USERNAME }}/$DOCKERHUB_REPOSITORY:prod-previous || true

      - name: Docker Image Build And Push
        run: docker build --platform linux/arm64 -t ${{ secrets.DOCKERHUB_USERNAME }}/$DOCKERHUB_REPOSITORY:${{ github.sha }}-prod_v2 -f Dockerfile . --push

  pull-and-deploy:
    needs: build-and-push
    runs-on: prod
    steps:
      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_PASSWORD }}

      - name: Clean Up Legacy Image
        run: |
          docker compose down || true
          docker rmi $(docker images -q) -f || true

      - name: Docker Compose up
        run: |
          export DOCKERHUB_USERNAME=${{ secrets.DOCKERHUB_USERNAME }}
          export DOCKERHUB_REPOSITORY=$DOCKERHUB_REPOSITORY
          export PROD_MYSQL_PASSWORD=${{ secrets.PROD_MYSQL_PASSWORD }}
          export JASYPT_ENCRYPTOR_PASSWORD=${{ secrets.JASYPT_PASSWORD }}
          export TAG=${{ github.sha }}-prod_v2
          docker compose up -d

      #TODO: 도메인 연결 시, health check 필요

      - name: Rollback if Health Check fails
        if: failure()
        run: |
          docker compose down || true
          docker rmi $(docker images -q) -f || true
          docker pull ${{ secrets.DOCKERHUB_USERNAME }}/$DOCKERHUB_REPOSITORY:prod-previous
          
          export DOCKERHUB_USERNAME=${{ secrets.DOCKERHUB_USERNAME }}
          export DOCKERHUB_REPOSITORY=$DOCKERHUB_REPOSITORY
          export PROD_MYSQL_PASSWORD=${{ secrets.PROD_MYSQL_PASSWORD }}
          export JASYPT_ENCRYPTOR_PASSWORD=${{ secrets.JASYPT_PASSWORD }}
          export TAG=prod-previous
          docker compose up -d

      - name: Tag successful deployment as latest
        if: success()
        run: |
          docker tag ${{ secrets.DOCKERHUB_USERNAME }}/$DOCKERHUB_REPOSITORY:${{ github.sha }}-prod_v2 ${{ secrets.DOCKERHUB_USERNAME }}/$DOCKERHUB_REPOSITORY:prod-latest
          docker push ${{ secrets.DOCKERHUB_USERNAME }}/$DOCKERHUB_REPOSITORY:prod-latest

      - name: Check Docker Process
        if: always()
        run: docker ps