CICD.yml

name: CICD

on:
  push:
    branches: [ "main" ]
#  pull_request:
#    branches: [ "main" ]

permissions:
  contents: read

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Install JDK 17
        uses: actions/setup-java@v3
        with:
          java-version: '17'
          distribution: 'temurin'

      - name: Grant execution permission for gradlew
        run: chmod +x ./gradlew
      
      - name: Build with Gradle
        run: ./gradlew clean build -x test

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

      - name: Build Docker
        run: docker build --platform linux/amd64 --build-arg PROFILES=blue --build-arg ENV=blue -t ${{ secrets.DOCKERHUB_USERNAME }}/live_server .

      - name: Push Docker
        run: docker push ${{ secrets.DOCKERHUB_USERNAME }}/live_server:latest

  deploy:
    needs: build
    runs-on: ubuntu-latest
    steps:
      - name: Set target IP
        run: |
          URL="http://${{ secrets.LIVE_SERVER_IP }}/env"
          STATUS=$(curl -o /dev/null -w "%{http_code}" "$URL")
          echo $STATUS
          if [ "$STATUS" = "200" ]; then
            CURRENT_UPSTREAM=$(curl -s "$URL")
            echo "CURRENT_UPSTREAM from server: $CURRENT_UPSTREAM"
          else
            CURRENT_UPSTREAM=green
            echo "CURRENT_UPSTREAM default: $CURRENT_UPSTREAM"
          fi
          
          echo CURRENT_UPSTREAM=$CURRENT_UPSTREAM >> $GITHUB_ENV
          if [ "$CURRENT_UPSTREAM" = "blue" ]; then
            echo "CURRENT_PORT=8080" >> $GITHUB_ENV
            echo "STOPPED_PORT=8081" >> $GITHUB_ENV
            echo "TARGET_UPSTREAM=green" >> $GITHUB_ENV
          elif [ "$CURRENT_UPSTREAM" = "green" ]; then
            echo "CURRENT_PORT=8081" >> $GITHUB_ENV
            echo "STOPPED_PORT=8080" >> $GITHUB_ENV
            echo "TARGET_UPSTREAM=blue" >> $GITHUB_ENV
          else
            echo "Unexpected CURRENT_UPSTREAM value: $CURRENT_UPSTREAM"
            echo "CURRENT_UPSTREAM default: green"
            CURRENT_UPSTREAM=green
            echo "CURRENT_PORT=8081" >> $GITHUB_ENV
            echo "STOPPED_PORT=8080" >> $GITHUB_ENV
            echo "TARGET_UPSTREAM=blue" >> $GITHUB_ENV
          fi

      - name: Deploy new version
        uses: appleboy/ssh-action@master
        with:
          username: ubuntu
          host: ${{ secrets.LIVE_SERVER_IP }}
          key: ${{ secrets.EC2_SSH_KEY }}
          script_stop: true
          script: |
            sudo docker pull ${{ secrets.DOCKERHUB_USERNAME }}/live_server:latest
            sudo docker-compose -f docker-compose-${{env.TARGET_UPSTREAM}}.yml up -d --remove-orphans
      
      - name: Wait for server to start
        run: sleep 30  # 서버가 시작될 시간을 확보

      - name: Check deploy server URL
        uses: jtalk/url-health-check-action@v3
        with:
          url: http://${{ secrets.LIVE_SERVER_IP }}:${{env.STOPPED_PORT}}/env
          max-attempts: 10  # 재시도 횟수를 10으로 증가
          retry-delay: 20s  # 지연 시간을 20초로 설정

      - name: Change nginx upstream
        uses: appleboy/ssh-action@master
        with:
          username: ubuntu
          host: ${{ secrets.LIVE_SERVER_IP }}
          key: ${{ secrets.EC2_SSH_KEY }}
          script_stop: true
          script: |
            sudo docker exec -i nginxserver bash -c 'echo "set \$service_url ${{ env.TARGET_UPSTREAM }};" > /etc/nginx/conf.d/service-env.inc && nginx -s reload' 
     
      - name: Stop current server
        uses: appleboy/ssh-action@master
        with:
          username: ubuntu
          host: ${{ secrets.LIVE_SERVER_IP }}
          key: ${{ secrets.EC2_SSH_KEY }}
          script_stop: true
          script: |
            if [ "${{env.CURRENT_UPSTREAM}}" != "default_env" ]; then sudo docker stop ${{env.CURRENT_UPSTREAM}} && sudo docker rm ${{env.CURRENT_UPSTREAM}}; else echo "Skipping stop and remove for default_env"; fi