1 files changed, 43 insertions, 0 deletions
diff --git a/db/post_migrate/20230403231841_add_fk_on_issue_user_mentions_note_id_convert_to_bigint_for_gitlab_com.rb b/db/post_migrate/20230403231841_add_fk_on_issue_user_mentions_note_id_convert_to_bigint_for_gitlab_com.rb
new file mode 100644
index 00000000000..e2b5c6fcbe3
--- /dev/null
+++ b/db/post_migrate/20230403231841_add_fk_on_issue_user_mentions_note_id_convert_to_bigint_for_gitlab_com.rb
@@ -0,0 +1,43 @@
+# frozen_string_literal: true
+
+class AddFkOnIssueUserMentionsNoteIdConvertToBigintForGitlabCom < Gitlab::Database::Migration[2.1]
+  include Gitlab::Database::MigrationHelpers::ConvertToBigint
+
+  disable_ddl_transaction!
+
+  SOURCE_TABLE_NAME = :issue_user_mentions
+  TARGET_TABLE_NAME = :notes
+  FK_NAME = :fk_issue_user_mentions_note_id_convert_to_bigint
+
+  def up
+    return unless should_run?
+
+    # This will replace the existing fk_rails_3861d9fefa
+    # when we swap the integer and bigint columns
+    add_concurrent_foreign_key SOURCE_TABLE_NAME, TARGET_TABLE_NAME,
+      column: :note_id_convert_to_bigint,
+      name: FK_NAME,
+      on_delete: :cascade,
+      reverse_lock_order: true,
+      validate: false
+  end
+
+  def down
+    return unless should_run?
+
+    with_lock_retries do
+      remove_foreign_key_if_exists(
+        SOURCE_TABLE_NAME,
+        TARGET_TABLE_NAME,
+        name: FK_NAME,
+        reverse_lock_order: true
+      )
+    end
+  end
+
+  private
+
+  def should_run?
+    com_or_dev_or_test_but_not_jh?
+  end
+end