backend_mail_cd.yml

name: Backend Mail Continuous Delivery

on:
  push:
    paths:
      - "backend/mail-service/**"
    branches:
      - main
  workflow_dispatch:

permissions: write-all

env:
  MAIL_JAR_TARGET_PATH: "backend/mail-service/build/libs/mail-service.jar"
  MAIL_DOCKER_TARGET_PATH: "backend/mail-service/Dockerfile.prod"
  MAIL_FOLDER_PATH: "/home/app/backend/mail-service"

jobs:
  # 사전 작업
  setup:
    runs-on: ubuntu-22.04

    outputs:
      build-cache-key: ${{ steps.build-cache.outputs.key }}
      current-datetime: ${{ steps.datetime.outputs.datetime }}
    steps:
      - uses: actions/checkout@v4

      - name: Get current date and time
        id: datetime
        run: echo "datetime=$(date '+%Y-%m-%d_%H-%M-%S')" >> $GITHUB_OUTPUT

      - name: Generate mail-service build cache key
        id: build-cache
        run: echo "key=$(echo build-${{ runner.os }}-gradle-${{ hashFiles('backend/mail-service/**/*.gradle*', 'backend/mail-service/**/gradle-wrapper.properties') }})" >> $GITHUB_OUTPUT

      - name: docker-compose.prod.yml hash key
        id: compose-hash
        run: |
          echo "DOCKER_KEY=$(sha256sum docker-compose.prod.yml | awk '{ print $1 }')" >> $GITHUB_ENV

      # 캐시가 존재하면 파일 전송 스킵
      - name: Check cache for docker-compose.prod.yml
        id: cache-check
        uses: actions/cache@v4
        with:
          path: ./docker-compose.prod.yml
          key: ${{ runner.os }}-docker-compose-prod-${{ env.DOCKER_KEY }}

      - name: Modify permissions
        run: chmod o+rwx docker-compose.prod.yml

      - name: Send docker-compose.prod.yml
        if: steps.cache-check.outputs.cache-hit != 'true'
        uses: appleboy/scp-action@master
        with:
          proxy_host: ${{ secrets.PROXY_HOST }}
          proxy_username: ${{ secrets.PROXY_HOST_USERNAME }}
          proxy_key: ${{ secrets.PROXY_HOST_KEY }}

          host: ${{ secrets.REMOTE_HOST }}
          username: ${{ secrets.REMOTE_HOST_USERNAME }}
          key: ${{ secrets.REMOTE_HOST_KEY }}

          source: "docker-compose.prod.yml"
          target: "/home/app"

  build:
    needs: setup
    runs-on: ubuntu-22.04
    defaults:
      run:
        working-directory: backend/mail-service
    steps:
      - uses: actions/checkout@v4

      - name: Gradle Caching
        id: cache-gradle
        uses: actions/cache@v4
        with:
          path: |
            ~/.gradle/caches
            ~/.gradle/wrapper
          key: ${{ needs.setup.outputs.build-cache-key }}
          restore-keys: |
            ${{ runner.os }}-gradle-

      - name: Cache Check
        if: steps.cache-gradle.outputs.cache-hit == 'true'
        run: echo 'Gradle cache hit!'

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

      - name: Grant execute permission for gradlew
        run: chmod +x gradlew

      - name: Build with Gradle
        run: ./gradlew build -x test

      # (Actions에서 생성한 파일은 권한을 수정해야 scp로 보낼 때 오류가 안생김)
      - name: Modify permissions
        run: chmod o+rwx build/libs/mail-service.jar

      - name: Send jar
        uses: appleboy/scp-action@master
        with:
          proxy_host: ${{ secrets.PROXY_HOST }}
          proxy_username: ${{ secrets.PROXY_HOST_USERNAME }}
          proxy_key: ${{ secrets.PROXY_HOST_KEY }}

          host: ${{ secrets.REMOTE_HOST }}
          username: ${{ secrets.REMOTE_HOST_USERNAME }}
          key: ${{ secrets.REMOTE_HOST_KEY }}

          source: ${{ env.MAIL_JAR_TARGET_PATH }}
          target: ${{ env.MAIL_FOLDER_PATH }}
          strip_components: 4 # 파일을 복사할 때 source 경로에서 몇 개의 컴포넌트(디렉토리)를 제거할 것인지를 지정합니다. 4이므로, backend/main-service/build/libs/devlog.jar 에서 backend, main-service, build, libs가 사라짐.

      - name: Modify permissions Dockerfile.prod
        run: chmod o+rwx Dockerfile.prod

      - name: Send Dockerfile.prod
        uses: appleboy/scp-action@master
        with:
          proxy_host: ${{ secrets.PROXY_HOST }}
          proxy_username: ${{ secrets.PROXY_HOST_USERNAME }}
          proxy_key: ${{ secrets.PROXY_HOST_KEY }}

          host: ${{ secrets.REMOTE_HOST }}
          username: ${{ secrets.REMOTE_HOST_USERNAME }}
          key: ${{ secrets.REMOTE_HOST_KEY }}

          source: ${{ env.MAIL_DOCKER_TARGET_PATH }}
          target: ${{ env.MAIL_FOLDER_PATH }}
          strip_components: 2

  startup:
    needs:
      - build
    runs-on: ubuntu-22.04
    concurrency:
      group: startup-lock
      cancel-in-progress: false
    steps:
      - name: Restart Server
        uses: appleboy/ssh-action@master
        with:
          proxy_host: ${{ secrets.PROXY_HOST }}
          proxy_username: ${{ secrets.PROXY_HOST_USERNAME }}
          proxy_key: ${{ secrets.PROXY_HOST_KEY }}

          host: ${{ secrets.REMOTE_HOST }}
          username: ${{ secrets.REMOTE_HOST_USERNAME }}
          key: ${{ secrets.REMOTE_HOST_KEY }}

          script: |
            cd /home/app
            docker compose -f docker-compose.prod.yml up -d --build mail-service