auth-microservice-deploy.yml

name: Deploy Auth Microservices changes

on:
  push:
    branches: 
      - main
    paths:
      - 'auth-microservice/**'

env:
  GKE_CLUSTER: chat1-405416-gke
  GKE_ZONE: us-central1
  IMAGE: charlyjazz/auth-microservice
  K8_DIR: auth-microservice/k8s

jobs:
  setup-build-publish-deploy:
    name: Setup, Build, Publish, and Deploy
    runs-on: ubuntu-latest
    permissions:
      contents: 'read'
      id-token: 'write'

    steps:
      - name: Check out the repo
        uses: actions/checkout@v4

      - id: 'auth'
        name: 'Authenticate to Google Cloud'
        uses: 'google-github-actions/auth@v1'
        with:
          credentials_json: '${{ secrets.GOOGLE_CREDENTIALS }}'

      - name: 'Use gcloud CLI'
        run: 'gcloud info'

      - name: setup-gke-gcloud-auth-plugin
        uses: simenandre/setup-gke-gcloud-auth-plugin@v1.1.2
            
      - uses: google-github-actions/get-gke-credentials@v1
        with:
          cluster_name: ${{ env.GKE_CLUSTER }}
          location: ${{ env.GKE_ZONE }}

      - name: Log in to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      
      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.IMAGE }}
      
      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: auth-microservice/
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

      - name: Update Deployment Image
        run: |
          sed -i 's|${{env.IMAGE}}:latest|${{env.IMAGE}}:${{github.ref_name}}|' ${{env.K8_DIR}}/auth-microservice-deployment.yaml

      - name: Deploy to GKE
        run: |
          kubectl apply -f ${{env.K8_DIR}}/auth-db-deployment.yaml
          kubectl apply -f ${{env.K8_DIR}}/auth-db-service.yaml
          kubectl apply -f ${{env.K8_DIR}}/auth-db-volume-persistentvolumeclaim.yaml
          kubectl apply -f ${{env.K8_DIR}}/auth-microservice-config.yaml
          
          echo "Apply the deployment and capture the output"
          DEPLOYMENT_OUTPUT=$(kubectl apply -f ${{env.K8_DIR}}/auth-microservice-deployment.yaml)
          echo "Check if the output contains 'unchanged'"
          if echo "$DEPLOYMENT_OUTPUT" | grep -q 'unchanged'; then
            echo "Deployment unchanged. Restarting to pick up possible new Docker image..."
            kubectl rollout restart deployment/auth-microservice
          fi

          kubectl apply -f ${{env.K8_DIR}}/auth-microservice-deployment.yaml
          kubectl apply -f ${{env.K8_DIR}}/auth-microservice-service.yaml