main.yml

# Deploys to an Azure Virtual Machine and starts the web app

name: Deploy Java app to Azure Virtual Machine

on:
  pull_request:
    branches: [ "main" ]
    types: [ closed ]


jobs:
  deploy:
    if: github.event.pull_request.merged == true
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v2

      - name: Set up JDK 21
        uses: actions/setup-java@v2
        with:
          java-version: '21'
          distribution: 'temurin'
          cache: maven

      - name: Build with Maven
        run: mvn -B package --file pom.xml

      - name: Create SSH key file
        # Write private key to .pem file
        run: echo "${{ secrets.SPRING_BOOT_VM_PRIVATE_KEY }}" > private_key.pem


      - name: Deploy to Azure Virtual Machine
        env:
          SPRING_BOOT_VM_IP: ${{ secrets.SPRING_BOOT_VM_IP }}
          SPRING_BOOT_VM_USERNAME: ${{ secrets.SPRING_BOOT_VM_USERNAME }}
        run: |
        # Add host to known hosts
          ssh-keyscan -H ${{ secrets.SPRING_BOOT_VM_IP }} >> ~/.ssh/known_hosts
        # Transfer artifact using scp
          scp -v -o "StrictHostKeyChecking=no" -i private_key.pem target/*.jar $SPRING_BOOT_VM_USERNAME@$SPRING_BOOT_VM_IP:/home/$SPRING_BOOT_VM_USERNAME/spring_boot_demo/