github-actions: Add gchat notification (#91)

Signed-off-by: Miguel Ruiz <[email protected]>

.github/workflows/gchat-notification.yml

@@ -0,0 +1,42 @@
+# Copyright Broadcom, Inc. All Rights Reserved.
+# SPDX-License-Identifier: APACHE-2.0
+
+name: 'GChat Notification'
+on:
+  workflow_call:
+    inputs:
+      workflow:
+        type: string
+        required: true
+      job-url:
+        type: string
+        required: true
+      repository:
+        type: string
+    secrets:
+      webhook-url:
+        required: true
+# Remove all permissions by default
+permissions: {}
+jobs:
+  notification:
+    name: Google Chat Notification
+    runs-on: ubuntu-latest
+    steps:
+      - name: Notify
+        env:
+          JOB_URL: ${{ inputs.job-url }}
+          GH_WORKFLOW: ${{ inputs.workflow }}
+          GH_REPOSITORY: ${{ inputs.repository != '' && inputs.repository || github.repository }}
+          WEBHOOK_URL: ${{ secrets.webhook-url }}
+        run: |
+          tmp_file=$(mktemp)
+          cat >"${tmp_file}"<<EOF
+          ⚠️ [${GH_REPOSITORY}] Failure detected on '${GH_WORKFLOW}' workflow ⚠️
+          📑 See details <${JOB_URL}|here>.
+          EOF
+
+          # Use curl to send the JSON to Google.
+          escapedText=$(sed -e 's/\n/\\n/g' -e 's/"/\\"/g' -e "s/'/\\'/g" "${tmp_file}")
+          json="{\"text\": \"$escapedText\"}"
+          curl -o /tmp/out -s --fail -X POST -H 'Content-Type: application/json' -d "$json" "${WEBHOOK_URL}"