Add GitHub Actions CI/CD workflow

.github/workflows/ci-cd.yml

@@ -0,0 +1,251 @@
+name: CI/CD Pipeline
+
+on:
+  push:
+    branches: [ main, develop ]
+  pull_request:
+    branches: [ main ]
+  workflow_dispatch:
+
+env:
+  JAVA_VERSION: '21'
+  JAVA_DISTRIBUTION: 'temurin'
+  GCP_REGION: 'us-central1'
+
+jobs:
+  # Job 1: Build and Test
+  build-and-test:
+    name: Build and Test
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up JDK ${{ env.JAVA_VERSION }}
+        uses: actions/setup-java@v4
+        with:
+          java-version: ${{ env.JAVA_VERSION }}
+          distribution: ${{ env.JAVA_DISTRIBUTION }}
+          cache: 'maven'
+
+      - name: Run tests
+        run: ./mvnw clean verify -B
+
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: test-results
+          path: target/surefire-reports/
+          retention-days: 30
+
+  # Job 2: Security Scan (Filesystem)
+  security-scan:
+    name: Security Scan
+    runs-on: ubuntu-latest
+    needs: build-and-test
+    
+    permissions:
+      contents: read
+      security-events: write
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Run Trivy vulnerability scanner
+        uses: aquasecurity/trivy-action@master
+        with:
+          scan-type: 'fs'
+          scan-ref: '.'
+          format: 'sarif'
+          output: 'trivy-results.sarif'
+          severity: 'CRITICAL,HIGH'
+
+      - name: Upload Trivy results to GitHub Security
+        uses: github/codeql-action/upload-sarif@v3
+        if: always()
+        with:
+          sarif_file: 'trivy-results.sarif'
+
+  # Job 3: Build and Push Docker Image
+  build-and-push-image:
+    name: Build and Push Docker Image
+    runs-on: ubuntu-latest
+    needs: [build-and-test, security-scan]
+    if: github.event_name == 'push' || github.event_name == 'workflow_dispatch'
+    
+    permissions:
+      contents: read
+      id-token: write
+    
+    outputs:
+      image-tag: ${{ steps.meta.outputs.tags }}
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Authenticate to Google Cloud
+        id: auth
+        uses: google-github-actions/auth@v2
+        with:
+          workload_identity_provider: ${{ secrets.GCP_WORKLOAD_IDENTITY_PROVIDER }}
+          service_account: ${{ secrets.GCP_SERVICE_ACCOUNT }}
+
+      - name: Set up Cloud SDK
+        uses: google-github-actions/setup-gcloud@v2
+
+      - name: Configure Docker for GCR
+        run: |
+          gcloud auth configure-docker ${{ env.GCP_REGION }}-docker.pkg.dev
+
+      - name: Extract metadata for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.GCP_REGION }}-docker.pkg.dev/${{ secrets.GCP_PROJECT_ID }}/petclinic/spring-petclinic
+          tags: |
+            type=ref,event=branch
+            type=sha,prefix={{branch}}-
+            type=raw,value=latest,enable={{is_default_branch}}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+  # Job 4: Container Security Scan
+  scan-image:
+    name: Scan Docker Image
+    runs-on: ubuntu-latest
+    needs: build-and-push-image
+    
+    permissions:
+      contents: read
+      security-events: write
+    
+    steps:
+      - name: Authenticate to Google Cloud
+        uses: google-github-actions/auth@v2
+        with:
+          workload_identity_provider: ${{ secrets.GCP_WORKLOAD_IDENTITY_PROVIDER }}
+          service_account: ${{ secrets.GCP_SERVICE_ACCOUNT }}
+
+      - name: Set up Cloud SDK
+        uses: google-github-actions/setup-gcloud@v2
+
+      - name: Configure Docker
+        run: gcloud auth configure-docker ${{ env.GCP_REGION }}-docker.pkg.dev
+
+      - name: Run Trivy vulnerability scanner on image
+        uses: aquasecurity/trivy-action@master
+        with:
+          image-ref: ${{ env.GCP_REGION }}-docker.pkg.dev/${{ secrets.GCP_PROJECT_ID }}/petclinic/spring-petclinic:${{ github.sha }}
+          format: 'sarif'
+          output: 'trivy-image-results.sarif'
+          severity: 'CRITICAL,HIGH'
+
+      - name: Upload Trivy results to GitHub Security
+        uses: github/codeql-action/upload-sarif@v3
+        if: always()
+        with:
+          sarif_file: 'trivy-image-results.sarif'
+
+  # Job 5: Deploy to GCP
+  deploy:
+    name: Deploy to GCP
+    runs-on: ubuntu-latest
+    needs: [build-and-push-image, scan-image]
+    if: github.event_name == 'push' || github.event_name == 'workflow_dispatch'
+    
+    environment:
+      name: ${{ github.ref == 'refs/heads/main' && 'production' || 'development' }}
+    
+    permissions:
+      contents: read
+      id-token: write
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Authenticate to Google Cloud
+        uses: google-github-actions/auth@v2
+        with:
+          workload_identity_provider: ${{ secrets.GCP_WORKLOAD_IDENTITY_PROVIDER }}
+          service_account: ${{ secrets.GCP_SERVICE_ACCOUNT }}
+
+      - name: Set up Cloud SDK
+        uses: google-github-actions/setup-gcloud@v2
+
+      - name: Set up Terraform
+        uses: hashicorp/setup-terraform@v3
+        with:
+          terraform_version: 1.6.0
+
+      - name: Determine environment
+        id: env
+        run: |
+          if [ "${{ github.ref }}" == "refs/heads/main" ]; then
+            echo "environment=prod" >> $GITHUB_OUTPUT
+            echo "min_instances=1" >> $GITHUB_OUTPUT
+          else
+            echo "environment=dev" >> $GITHUB_OUTPUT
+            echo "min_instances=0" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Terraform Init
+        working-directory: ./terraform
+        run: terraform init
+
+      - name: Terraform Plan
+        working-directory: ./terraform
+        run: |
+          terraform plan \
+            -var="project_id=${{ secrets.GCP_PROJECT_ID }}" \
+            -var="region=${{ env.GCP_REGION }}" \
+            -var="environment=${{ steps.env.outputs.environment }}" \
+            -var="image_tag=${{ github.sha }}" \
+            -var="min_instances=${{ steps.env.outputs.min_instances }}" \
+            -out=tfplan
+
+      - name: Terraform Apply
+        working-directory: ./terraform
+        run: terraform apply -auto-approve tfplan
+
+      - name: Get Cloud Run URL
+        id: deploy
+        run: |
+          URL=$(gcloud run services describe petclinic-${{ steps.env.outputs.environment }} \
+            --region=${{ env.GCP_REGION }} \
+            --format='value(status.url)')
+          echo "url=$URL" >> $GITHUB_OUTPUT
+
+      - name: Run smoke test
+        run: |
+          sleep 30
+          curl -f ${{ steps.deploy.outputs.url }}/actuator/health || exit 1
+
+  # Job 6: Notify
+  notify:
+    name: Notify
+    runs-on: ubuntu-latest
+    needs: [deploy]
+    if: always()
+    
+    steps:
+      - name: Send notification
+        run: |
+          echo "Deployment ${{ needs.deploy.result }}"
+          echo "Status: ${{ job.status }}"