Create GitHub Actions for auto deployment to AWS (CS3219-AY2425S1#66)

* Create github workflow to deploy frontend and backend to AWS

* Add conditional trigger for backend workflow

* The build is triggered for a specific service only if its files have been changes

* Update frontend workflow

* Remove trigger on pull request
* Add conditional trigger based on frontend directory

* Add cloudfront cache invalidation to frontend workflow

Co-authored-by: samuelim01 <[email protected]>

* Include collab in backend workflow

* Add workflow scripts that can only be triggered manually for frontend and backend

* Rename frontend force workflow

* Change frontend and backend workflows to trigger only on production branch

---------

Co-authored-by: samuelim01 <[email protected]>
Co-authored-by: Samuel Lim <[email protected]>

.github/workflows/backend.yml

@@ -0,0 +1,64 @@
+name: Deploy Backend Services
+
+on:
+  push:
+    branches: [ 'production' ]
+
+  workflow_dispatch:
+
+permissions:
+  id-token: write   # This is required for requesting the JWT
+  contents: read    # This is required for actions/checkout
+
+env:
+  AWS_REGION: ap-southeast-1
+  ECS_CLUSTER: backend-cluster
+
+jobs:
+  deploy:
+    name: Deploy Backend Service
+    runs-on: ubuntu-latest
+    environment: production
+
+    strategy:
+      matrix:
+        service: [ 'question', 'user', 'match', 'collaboration' ]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Configure AWS credentials
+        id: aws-configure
+        uses: aws-actions/[email protected]
+        with:
+          role-to-assume: ${{ secrets.AWS_BACKEND_ROLE }}
+          role-session-name: GitHub_to_AWS_via_FederatedOIDC
+          aws-region: ${{ env.AWS_REGION }}
+
+      - name: Login to AWS ECR
+        id: login-ecr
+        uses: aws-actions/[email protected]
+
+      - name: Build and push ${{ matrix.service }} image to AWS ECR
+        id: build-image
+        env:
+          ECR_REGISTRY: ${{ steps.login-ecr.outputs.registry }}
+          ECR_REPOSITORY: ${{ matrix.service }}
+          IMAGE_TAG: latest
+        run: |
+          echo "Building $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG"
+          docker build -t $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG ./services/${{ matrix.service }}
+          docker push $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG
+
+      - name: Update AWS Service (${{ matrix.service }}) # Trigger re-deployment with latest image
+        id: update-service
+        env:
+          ECS_SERVICE: ${{ matrix.service }}-service
+        run: |
+          echo "Updating $ECS_SERVICE for $ECS_CLUSTER"
+          aws ecs update-service \
+            --cluster $ECS_CLUSTER \
+            --service $ECS_SERVICE \
+            --force-new-deployment \
+            --region $AWS_REGION

.github/workflows/frontend.yml

@@ -0,0 +1,44 @@
+name: Deploy Frontend
+
+on:
+  push:
+    branches: [ 'production' ]
+
+  workflow_dispatch:
+
+permissions:
+  id-token: write   # This is required for requesting the JWT
+  contents: read    # This is required for actions/checkout
+
+env:
+  AWS_REGION: ap-southeast-1
+  S3_BUCKET_NAME: app.peerprep.org
+
+jobs:
+  deploy:
+    name: Deploy Frontend
+    runs-on: ubuntu-latest
+    environment: production
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Configure AWS credentials
+        id: aws-configure
+        uses: aws-actions/[email protected]
+        with:
+          role-to-assume: ${{ secrets.AWS_FRONTEND_ROLE }}
+          role-session-name: GitHub_to_AWS_via_FederatedOIDC
+          aws-region: ${{ env.AWS_REGION }}
+
+      - name: Build frontend distribution
+        working-directory: frontend
+        run: npm ci && npm run build
+
+      - name: Sync distribution to S3
+        run: |
+          aws s3 sync ./frontend/dist/frontend/browser/ s3://$S3_BUCKET_NAME --delete
+
+      - name: Invalidate Cloudfront Cache
+        run: |
+          aws cloudfront create-invalidation --distribution-id ${{ secrets.AWS_CLOUDFRONT_ID }} --paths "/*"