[.github] - feature: enhance deploy-oauth workflow with region option…

…s and notifications (#9612)

- Add ability to specify deployment regions with 'all' as an option to deploy to multiple regions
 - Split the workflow into notify, build, and deploy jobs with dependencies between them
 - Implement a job to create a matrix for regions in case of deploying to 'all' regions
 - Include short SHA in several steps for better traceability of builds
 - Send Slack notifications at the start and completion of the deployment process

.github/workflows/deploy-oauth.yml

@@ -3,6 +3,15 @@ name: Deploy Oauth
 on:
   workflow_dispatch:
     inputs:
+      regions:
+        description: "Regions to deploy to"
+        required: true
+        default: "us-central1"
+        type: choice
+        options:
+          - "us-central1"
+          - "europe-west1"
+          - "all"
       check_deployment_blocked:
         description: "Check #deployment locks or force deploy"
         required: true
@@ -18,17 +27,15 @@ concurrency:
 
 env:
   GCLOUD_PROJECT_ID: ${{ secrets.GCLOUD_PROJECT_ID }}
+  IMAGE_NAME: oauth
 
 jobs:
-  build-and-deploy:
+  notify-start:
     runs-on: ubuntu-latest
-
-    if: github.ref == 'refs/heads/main'
-
+    outputs:
+      thread_ts: ${{ steps.build_message.outputs.thread_ts }}
     steps:
-      - name: Checkout code
-        uses: actions/checkout@v3
-
+      - uses: actions/checkout@v3
       - name: Get short sha
         id: short_sha
         run: echo "short_sha=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
@@ -52,20 +59,54 @@ jobs:
           channel: ${{ secrets.SLACK_CHANNEL_ID }}
           slack_token: ${{ secrets.SLACK_BOT_TOKEN }}
 
+  create-matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.set-matrix.outputs.matrix }}
+    steps:
+      - id: set-matrix
+        run: |
+          if [ "${{ github.event.inputs.regions }}" = "all" ]; then
+            echo "matrix=[\"us-central1\",\"europe-west1\"]" >> $GITHUB_OUTPUT
+          else
+            echo "matrix=[\"${{ github.event.inputs.regions }}\"]" >> $GITHUB_OUTPUT
+          fi
+
+  build:
+    needs: [notify-start, create-matrix]
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        region: ${{ fromJson(needs.create-matrix.outputs.matrix) }}
+      fail-fast: true
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Get short sha
+        id: short_sha
+        run: echo "short_sha=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
       - name: "Authenticate with Google Cloud"
         uses: "google-github-actions/auth@v1"
         with:
           credentials_json: "${{ secrets.GCLOUD_SA_KEY }}"
 
-      - name: Build the image on Cloud Build
+      - name: Build image for ${{ matrix.region }}
         run: |
           chmod +x ./k8s/cloud-build.sh
           ./k8s/cloud-build.sh \
-            --image-name=oauth \
+            --image-name=$IMAGE_NAME \
             --dockerfile-path=./oauth.Dockerfile \
             --working-dir=./core/ \
-            --region=us-central1
+            --region=${{ matrix.region }}
 
+  deploy:
+    needs: [notify-start, build]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Get short sha
+        id: short_sha
+        run: echo "short_sha=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
       - name: Generate a token
         id: generate-token
         uses: actions/create-github-app-token@v1
@@ -86,10 +127,10 @@ jobs:
               repo: 'dust-infra',
               event_type: 'trigger-component-deploy',
               client_payload: {
-                regions: 'us-central1',
+                regions: '${{ github.event.inputs.regions }}',
                 component: 'oauth',
                 image_tag: '${{ steps.short_sha.outputs.short_sha }}',
-                slack_thread_ts: "${{ steps.build_message.outputs.thread_ts }}",
+                slack_thread_ts: "${{ needs.notify-start.outputs.thread_ts }}",
                 slack_channel: '${{ secrets.SLACK_CHANNEL_ID }}'
               }
             });
@@ -104,4 +145,4 @@ jobs:
           image_tag: ${{ steps.short_sha.outputs.short_sha }}
           channel: ${{ secrets.SLACK_CHANNEL_ID }}
           slack_token: ${{ secrets.SLACK_BOT_TOKEN }}
-          thread_ts: "${{ steps.build_message.outputs.thread_ts }}"
+          thread_ts: "${{ needs.notify-start.outputs.thread_ts }}"