1 files changed, 49 insertions, 0 deletions
diff --git a/app/services/projects/alerting/notify_service.rb b/app/services/projects/alerting/notify_service.rb
new file mode 100644
index 00000000000..4ca3b154e4b
--- /dev/null
+++ b/app/services/projects/alerting/notify_service.rb
@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+module Projects
+  module Alerting
+    class NotifyService < BaseService
+      include Gitlab::Utils::StrongMemoize
+
+      def execute(token)
+        return forbidden unless alerts_service_activated?
+        return unauthorized unless valid_token?(token)
+
+        process_incident_issues
+
+        ServiceResponse.success
+      rescue Gitlab::Alerting::NotificationPayloadParser::BadPayloadError
+        bad_request
+      end
+
+      private
+
+      delegate :alerts_service, :alerts_service_activated?, to: :project
+
+      def process_incident_issues
+        IncidentManagement::ProcessAlertWorker
+          .perform_async(project.id, parsed_payload)
+      end
+
+      def parsed_payload
+        Gitlab::Alerting::NotificationPayloadParser.call(params.to_h)
+      end
+
+      def valid_token?(token)
+        token == alerts_service.token
+      end
+
+      def bad_request
+        ServiceResponse.error(message: 'Bad Request', http_status: 400)
+      end
+
+      def unauthorized
+        ServiceResponse.error(message: 'Unauthorized', http_status: 401)
+      end
+
+      def forbidden
+        ServiceResponse.error(message: 'Forbidden', http_status: 403)
+      end
+    end
+  end
+end