1 files changed, 18 insertions, 0 deletions
diff --git a/lib/gitlab/background_migration/calculate_wiki_sizes.rb b/lib/gitlab/background_migration/calculate_wiki_sizes.rb
new file mode 100644
index 00000000000..886c41a2b9d
--- /dev/null
+++ b/lib/gitlab/background_migration/calculate_wiki_sizes.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+# rubocop:disable Style/Documentation
+
+module Gitlab
+  module BackgroundMigration
+    class CalculateWikiSizes
+      def perform(start_id, stop_id)
+        ::ProjectStatistics.where(wiki_size: nil)
+          .where(id: start_id..stop_id)
+          .includes(project: [:route, :group, namespace: [:owner]]).find_each do |statistics|
+          statistics.refresh!(only: [:wiki_size])
+        rescue => e
+          Rails.logger.error "Failed to update wiki statistics. id: #{statistics.id} message: #{e.message}"
+        end
+      end
+    end
+  end
+end