class Excon::Middleware::Instrumentor

def error_call(datum)
  if datum.has_key?(:instrumentor)
    datum[:instrumentor].instrument("#{datum[:instrumentor_name]}.error", :error => datum[:error])
  end
  @stack.error_call(datum)
end

def request_call(datum)
  if datum.has_key?(:instrumentor)
    if datum[:retries_remaining] < datum[:retry_limit]
      event_name = "#{datum[:instrumentor_name]}.retry"
    else
      event_name = "#{datum[:instrumentor_name]}.request"
    end
    datum[:instrumentor].instrument(event_name, datum) do
      @stack.request_call(datum)
    end
  else
    @stack.request_call(datum)
  end
end

def response_call(datum)
  if datum.has_key?(:instrumentor)
    datum[:instrumentor].instrument("#{datum[:instrumentor_name]}.response", datum[:response])
  end
  @stack.response_call(datum)
end