develop_deploy.yml

name: Develop CI/CD Pipeline

on:
  push:
    branches: [ develop ]  # develop 브랜치에 push 시 실행

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v3  # 저장소 코드 체크아웃

      - name: Set up JDK 17
        uses: actions/setup-java@v3
        with:
          distribution: 'temurin'
          java-version: '17'

      - name: Create application.yml from Secret
        run: |
          mkdir -p ./src/main/resources
          echo "${{ secrets.APPLICATION_YML }}" > ./src/main/resources/application.yml

      - name: Make gradlew executable
        run: chmod +x ./gradlew

      - name: Build with Gradle
        uses: gradle/gradle-build-action@v2
        with:
          arguments: build

      - name: Upload JAR artifact
        uses: actions/upload-artifact@v4
        with:
          name: backend-jar
          path: build/libs/*.jar

  deploy:
    needs: build
    runs-on: ubuntu-latest

    steps:
      - name: Download JAR artifact
        uses: actions/download-artifact@v4
        with:
          name: backend-jar
          path: build/libs/

      - name: Deploy to EC2
        env:
          EC2_SSH_KEY: ${{ secrets.EC2_SSH_KEY }}
          EC2_USERNAME: ${{ secrets.EC2_USERNAME }}
          EC2_HOST: ${{ secrets.EC2_HOST }}
        run: |
          echo "$EC2_SSH_KEY" > private_key.pem
          chmod 600 private_key.pem
          jar_file=$(find build/libs -name '*.jar' ! -name '*plain.jar' | head -n 1)
          scp -i private_key.pem -o StrictHostKeyChecking=no "$jar_file" $EC2_USERNAME@$EC2_HOST:/home/$EC2_USERNAME/app.jar
          ssh -i private_key.pem -o StrictHostKeyChecking=no $EC2_USERNAME@$EC2_HOST "
            pgrep java | xargs -r kill -15 || true
            sleep 5
            nohup java -jar /home/$EC2_USERNAME/app.jar > app.log 2>&1 &
          "
          rm -f private_key.pem