backend-prod-cd.yml

name: [RELEASE] CD using Github self-hosted runner

on:
  workflow_dispatch:
  push:
    branches:
      - release
    paths:
      - 'backend/**'

env:
  ARTIFACT_NAME: review-me-prod
  ARTIFACT_DIRECTORY: ./backend/build/libs
  APPLICATION_DIRECTORY: ~/review-me-app

jobs:
  build:
    name: Build Jar file and upload artifact
    runs-on: ubuntu-latest

    steps:
      - name: Checkout to current repository
        uses: actions/checkout@v4

      - name: Setup JDK Corretto using cached gradle dependencies
        uses: actions/setup-java@v4
        with:
          distribution: 'corretto'
          java-version: 17
          cache: 'gradle'

      - name: Setup Gradle
        uses: gradle/actions/setup-gradle@v3
        with:
          gradle-version: 8.8

      - name: Build and test with gradle
        run: |
          cd ./backend
          ./gradlew clean bootJar

      - name: Rename artifact file
        run: |
          mv ${{ env.ARTIFACT_DIRECTORY }}/*.jar ${{ env.ARTIFACT_DIRECTORY }}/${{ env.ARTIFACT_NAME }}.jar

      - name: Upload created artifact
        uses: actions/upload-artifact@v4
        with:
          name: ${{ env.ARTIFACT_NAME }}
          path: ${{ env.ARTIFACT_DIRECTORY }}/${{ env.ARTIFACT_NAME }}.jar

  deploy:
    name: Deploy via self-hosted runner
    needs: build
    runs-on: [self-hosted, prod]

    steps:
      - name: Checkout to secret repository
        uses: actions/checkout@v4
        with:
          repository: ${{ secrets.PRIVATE_REPOSITORY_URL }}
          token: ${{ secrets.PRIVATE_REPOSITORY_TOKEN }}

      - name: Download uploaded artifact
        uses: actions/download-artifact@v4
        with:
          name: ${{ env.ARTIFACT_NAME }}

      - name: Copy application related files to other directory
        run: |
          sudo mv * ${{ env.APPLICATION_DIRECTORY }}

      - name: Find ${{ env.ARTIFACT_NAME }} process
        run: |
          echo "Checking processes..."
          PID=$(pgrep -f ${{ env.ARTIFACT_NAME }}.jar -d " " || true)
          if [ -n "$PID" ]; then
            echo "Found processes: $PID"
            echo "server_running=true" >> "$GITHUB_ENV"
            echo "PID=$PID" >> "$GITHUB_ENV"
          else
            echo "Process not found!"
            echo "server_running=false" >> "$GITHUB_ENV"
          fi

      - name: Stop server if available (gracefully)
        if: env.server_running == 'true'
        run: |
          echo "Gracefully shutting down process ${{ env.PID }}"
          for PID in ${{ env.PID }}; do
            sudo kill -15 $PID | true
            tail --pid=$PID -f /dev/null | true
          done

      - name: Start server
        run: |
          cd ${{ env.APPLICATION_DIRECTORY }}
          sudo nohup java -jar ${{ env.ARTIFACT_NAME }}.jar --server.port=80 --spring.config.location=application-prod.yml &