1 files changed, 21 insertions, 0 deletions
diff --git a/lib/gitlab/database/async_constraints/validators/foreign_key.rb b/lib/gitlab/database/async_constraints/validators/foreign_key.rb
new file mode 100644
index 00000000000..ff6b807c982
--- /dev/null
+++ b/lib/gitlab/database/async_constraints/validators/foreign_key.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Database
+    module AsyncConstraints
+      module Validators
+        class ForeignKey < Base
+          private
+
+          override :constraint_exists?
+          def constraint_exists?
+            Gitlab::Database::PostgresForeignKey
+              .by_constrained_table_name_or_identifier(table_name)
+              .by_name(name)
+              .exists?
+          end
+        end
+      end
+    end
+  end
+end