instrument

# File activesupport/lib/active_support/notifications/instrumenter.rb, line 19
      def instrument(name, payload = {})
        # some of the listeners might have state
        listeners_state = start name, payload
        begin
          yield payload
        rescue Exception => e
          payload[:exception] = [e.class.name, e.message]
          payload[:exception_object] = e
          raise e
        ensure
          finish_with_state listeners_state, name, payload
        end
      end