Add workflow (#10318)

.github/workflows/retrieve-current-desktop-rollout.yml

@@ -0,0 +1,42 @@
+---
+name: Retrieve Current Desktop Rollout
+
+on:
+  workflow_dispatch:
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  rollout:
+    name: Retrieve Rollout Percentage
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Login to Azure
+        uses: Azure/login@e15b166166a8746d1a47596803bd8c1b595455cf # v1.6.0
+        with:
+          creds: ${{ secrets.AZURE_KV_CI_SERVICE_PRINCIPAL }}
+
+      - name: Retrieve secrets
+        id: retrieve-secrets
+        uses: bitwarden/gh-actions/get-keyvault-secrets@main
+        with:
+          keyvault: "bitwarden-ci"
+          secrets: "aws-electron-access-id,
+            aws-electron-access-key,
+            aws-electron-bucket-name"
+
+      - name: Download channel update info files from S3
+        env:
+          AWS_ACCESS_KEY_ID: ${{ steps.retrieve-secrets.outputs.aws-electron-access-id }}
+          AWS_SECRET_ACCESS_KEY: ${{ steps.retrieve-secrets.outputs.aws-electron-access-key }}
+          AWS_DEFAULT_REGION: 'us-west-2'
+          AWS_S3_BUCKET_NAME: ${{ steps.retrieve-secrets.outputs.aws-electron-bucket-name }}
+        run: aws s3 cp $AWS_S3_BUCKET_NAME/desktop/latest.yml . --quiet
+
+      - name: Get current rollout percentage
+        run: |
+          CURRENT_PCT=$(sed -r -n "s/stagingPercentage:\s([0-9]+)/\1/p" latest.yml)
+          CURRENT_VERSION=$(sed -r -n "s/version:\s(.*)/\1/p" latest.yml)
+          echo "Desktop ${CURRENT_VERSION} rollout percentage is ${CURRENT_PCT}%" >> $GITHUB_STEP_SUMMARY