1 files changed, 35 insertions, 0 deletions
diff --git a/lib/gitlab/background_migration/backfill_project_import_level.rb b/lib/gitlab/background_migration/backfill_project_import_level.rb
new file mode 100644
index 00000000000..06706b729ea
--- /dev/null
+++ b/lib/gitlab/background_migration/backfill_project_import_level.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+# rubocop:disable Style/Documentation
+module Gitlab
+  module BackgroundMigration
+    class BackfillProjectImportLevel < BatchedMigrationJob
+      LEVEL = {
+        Gitlab::Access::NO_ACCESS => [0],
+        Gitlab::Access::DEVELOPER => [2],
+        Gitlab::Access::MAINTAINER => [1],
+        Gitlab::Access::OWNER => [nil]
+      }.freeze
+
+      def perform
+        each_sub_batch(operation_name: :update_import_level) do |sub_batch|
+          update_import_level(sub_batch)
+        end
+      end
+
+      private
+
+      def update_import_level(relation)
+        LEVEL.each do |import_level, creation_level|
+          namespace_ids = relation
+            .where(type: 'Group', project_creation_level: creation_level)
+
+          NamespaceSetting.where(
+            namespace_id: namespace_ids
+          ).update_all(project_import_level: import_level)
+        end
+      end
+    end
+  end
+end
+
+# rubocop:enable Style/Documentation