Extend UsageData with preferences usage

ee/lib/ee/gitlab/usage_data.rb

@@ -88,6 +88,16 @@ module EE
       end
       # rubocop: enable CodeReuse/ActiveRecord
 
+      # Note: when adding a preference, check if it's mapped to an attribute of a User model. If so, name
+      # the base key part after a corresponding User model attribute, use its possible values as suffix values.
+      override :preferences_usage
+      def preferences_usage
+        super.merge(
+          preference_group_overview_details: count(::User.group_view_details),
+          preference_group_overview_security_dashboard: count(::User.group_view_security_dashboard)
+        )
+      end
+
       override :system_usage_data
       def system_usage_data
         usage_data = super

lib/gitlab/usage_data.rb

@@ -92,7 +92,10 @@ module Gitlab
             todos: count(Todo),
             uploads: count(Upload),
             web_hooks: count(WebHook)
-          }.merge(services_usage).merge(approximate_counts)
+          }
+          .merge(services_usage)
+          .merge(approximate_counts)
+          .merge(preferences_usage)
         }
       end
       # rubocop: enable CodeReuse/ActiveRecord
@@ -161,6 +164,10 @@ module Gitlab
         }
       end
 
+      def preferences_usage
+        {}
+      end
+
       def count(relation, fallback: -1)
         relation.count
       rescue ActiveRecord::StatementInvalid