deploy_production.yml

name: Deploy Production Server to AWS EC2 using Docker

on:
  push:
    branches:
      - main

env:
  DOCKER_IMAGE_NAME: ${{ secrets.PRODUCTION_DOCKER_IMAGE_NAME }}
  EC2_HOST: ${{ secrets.EC2_HOST }}
  EC2_SSH_USER: ec2-user
  PRIVATE_KEY: ${{ secrets.EC2_SSH_PRIVATE_KEY }}
  CONTAINER_NAME_BLUE: ${{ secrets.CONTAINER_NAME_BLUE }}
  CONTAINER_NAME_GREEN: ${{ secrets.CONTAINER_NAME_GREEN }}
  CURRENT_CONTAINER: ${{ secrets.CURRENT_CONTAINER }}
  NEW_CONTAINER: ${{ secrets.NEW_CONTAINER }}
  CURRENT_PORT: ${{ secrets.CURRENT_PORT }}
  NEW_PORT: ${{ secrets.NEW_PORT }}
  

jobs:
  build-and-push-docker:

    runs-on: ubuntu-latest

    steps:
    - name: Checkout
      uses: actions/checkout@v3

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

    - name: Set up application.yml
      run: echo "${{ secrets.PRODUCTION_APPLICATION }}" > ./src/main/resources/application.yml

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

    - name: Build the Docker image
      run: docker build . --file Dockerfile --tag ${{ env.DOCKER_IMAGE_NAME }}:latest

    - name: Login to Docker Hub using Access Token
      run: echo "${{ secrets.DOCKER_HUB_TOKEN }}" | docker login -u ${{ secrets.DOCKER_USERNAME }} --password-stdin

    - name: Push the Docker image
      run: docker push ${{ env.DOCKER_IMAGE_NAME }}:latest


  deploy-to-ec2:

    needs: build-and-push-docker
    runs-on: ubuntu-latest

    steps:
    - name: Determine Active Environment
      id: determine-env
      run: |
        if [ "${{ env.CURRENT_CONTAINER }}" == "${{ env.CONTAINER_NAME_BLUE }}" ]; then
          echo "NEW_CONTAINER=${{ env.CONTAINER_NAME_GREEN }}" >> $GITHUB_ENV
          echo "NEW_PORT=8088" >> $GITHUB_ENV
        else
          echo "NEW_CONTAINER=${{ env.CONTAINER_NAME_BLUE }}" >> $GITHUB_ENV
          echo "NEW_PORT=8087" >> $GITHUB_ENV
        fi

    - name: Deploy to EC2
      uses: appleboy/ssh-action@master
      with:
        host: ${{ env.EC2_HOST }}
        username: ${{ env.EC2_SSH_USER }}
        key: ${{ env.PRIVATE_KEY }}
        script: |
          CURRENT_CONTAINER=${{ env.CURRENT_CONTAINER }}
          NEW_CONTAINER=${{ env.NEW_CONTAINER }}
          CURRENT_PORT=${{ env.CURRENT_PORT }}
          NEW_PORT=${{ env.NEW_PORT }}

          if [ $(sudo docker ps -q -f name=$NEW_CONTAINER) ]; then
            sudo docker stop $NEW_CONTAINER
            sudo docker rm $NEW_CONTAINER
          fi

          sudo docker pull ${{ env.DOCKER_IMAGE_NAME }}
          sudo docker run --name $NEW_CONTAINER -d -p $NEW_PORT:8087 -e TZ=Asia/Seoul ${{ env.DOCKER_IMAGE_NAME }}

          echo "CURRENT_CONTAINER="$NEW_CONTAINER"" >> "$GITHUB_ENV"
          echo "CURRENT_PORT="$NEW_PORT"" >> "$GITHUB_ENV"