1 files changed, 33 insertions, 0 deletions
diff --git a/lib/gitlab/database/rename_table_helpers.rb b/lib/gitlab/database/rename_table_helpers.rb
new file mode 100644
index 00000000000..7f5af038c6d
--- /dev/null
+++ b/lib/gitlab/database/rename_table_helpers.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Database
+    module RenameTableHelpers
+      def rename_table_safely(old_table_name, new_table_name)
+        with_lock_retries do
+          rename_table(old_table_name, new_table_name)
+          execute("CREATE VIEW #{old_table_name} AS SELECT * FROM #{new_table_name}")
+        end
+      end
+
+      def undo_rename_table_safely(old_table_name, new_table_name)
+        with_lock_retries do
+          execute("DROP VIEW IF EXISTS #{old_table_name}")
+          rename_table(new_table_name, old_table_name)
+        end
+      end
+
+      def finalize_table_rename(old_table_name, new_table_name)
+        with_lock_retries do
+          execute("DROP VIEW IF EXISTS #{old_table_name}")
+        end
+      end
+
+      def undo_finalize_table_rename(old_table_name, new_table_name)
+        with_lock_retries do
+          execute("CREATE VIEW #{old_table_name} AS SELECT * FROM #{new_table_name}")
+        end
+      end
+    end
+  end
+end