# frozen_string_literal: true

class AddUniqueIndexOnCiRunnersToken < Gitlab::Database::Migration[2.0]
  disable_ddl_transaction!

  INDEX_NAME = 'index_uniq_ci_runners_on_token'

  def up
    finalize_background_migration 'ResetDuplicateCiRunnersTokenValues'

    add_concurrent_index :ci_runners,
                         :token,
                         name: INDEX_NAME,
                         unique: true
  end

  def down
    remove_concurrent_index_by_name :ci_runners, INDEX_NAME
  end
end
