Send a notification email on mirror update errors

The email is sent to project maintainers containing the last mirror
update error. This will allow maintainers to set alarms and react
accordingly.

1 files changed, 23 insertions, 0 deletions

diff --git a/app/services/notification_recipient_service.rb b/app/services/notification_recipient_service.rb
index 9c236d7f41d..68cdc69023a 100644
--- a/app/services/notification_recipient_service.rb
+++ b/app/services/notification_recipient_service.rb
@@ -24,6 +24,10 @@ module NotificationRecipientService
     Builder::MergeRequestUnmergeable.new(*args).notification_recipients
   end
 
+  def self.build_project_maintainers_recipients(*args)
+    Builder::ProjectMaintainers.new(*args).notification_recipients
+  end
+
   module Builder
     class Base
       def initialize(*)
@@ -380,5 +384,24 @@ module NotificationRecipientService
         nil
       end
     end
+
+    class ProjectMaintainers < Base
+      attr_reader :target
+
+      def initialize(target, action:)
+        @target = target
+        @action = action
+      end
+
+      def build!
+        return [] unless project
+
+        add_recipients(project.team.maintainers, :watch, nil)
+      end
+
+      def acting_user
+        nil
+      end
+    end
   end
 end