deploy.yml

name: Java CI with Gradle

# 동작 조건 설정 : main 브랜치에 push 혹은 pull request가 발생할 경우 동작한다.
on:
  push:
    branches: [ "main" ]

permissions:
  contents: read

jobs:
  # Spring Boot 애플리케이션을 빌드하여 도커허브에 푸시하는 과정
  build-docker-image:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      # 1. Java 21 세팅
      - name: Set up JDK 21
        uses: actions/setup-java@v3
        with:
          java-version: '21'
          distribution: 'temurin'

      ## create application-database.yaml
      - name: create application.properties file
        run: |
          mkdir ./src/main/resources
          touch ./src/main/resources/application.yml
          echo "${{ secrets.APPLICATION_YML }}" >> src/main/resources/application.yml

      ## create firebase-service-key.json
      - name: create firebase_service_key.json file
        run: |
          mkdir ./src/main/resources/firebase
          touch ./src/main/resources/firebase/firebase_service_key.json
          echo "${{ secrets.FIREBASE_SERVICE_KEY }}" > src/main/resources/firebase/firebase_service_key.json

      - name: Grant execute permission for gradlew
        run: chmod +x ./gradlew
        shell: bash

      # 2. Spring Boot 애플리케이션 빌드
      - name: Build with Gradle
        uses: gradle/gradle-build-action@67421db6bd0bf253fb4bd25b31ebb98943c375e1
        with:
          arguments: clean bootJar

      # 3. Docker 이미지 빌드
      - name: docker image build
        run: docker build -t ${{ secrets.DOCKERHUB_USERNAME }}/studentvote .

      # 4. DockerHub 로그인
      - name: docker login
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_PASSWORD }}

      # 5. Docker Hub 이미지 푸시
      - name: docker Hub push
        run: docker push ${{ secrets.DOCKERHUB_USERNAME }}/studentvote

  run-docker-image-on-ec2:
    needs: build-docker-image
    runs-on: self-hosted

    steps:
      # 1. 최신 이미지를 풀받습니다
      - name: docker pull
        run: sudo docker pull ${{ secrets.DOCKERHUB_USERNAME }}/studentvote

      # 2. 기존의 컨테이너를 중지시킵니다
      - name: docker stop container
        run: sudo docker stop $(sudo docker ps -q) 2>/dev/null || true

      # 3. 최신 이미지를 컨테이너화하여 실행시킵니다
      - name: docker run new container
        run: sudo docker run --name studentvote --rm -d -p 8080:8080 ${{ secrets.DOCKERHUB_USERNAME }}/studentvote

      # 4. 미사용 이미지를 정리합니다
      - name: delete old docker image
        run: sudo docker system prune -f