utils.py 文件源码

def elapsed_time(start, end):
    """Calculate the elapsed time for a service activity.

    Arguments:
      start (:py:class:`str`): The activity start time.
      end (:py:class:`str`): The activity end time.

    Returns:
      :py:class:`tuple`: The start and end times and humanized elapsed
        time.

    """
    start_time = safe_parse(start)
    end_time = safe_parse(end)
    if start_time is None or end_time is None:
        logger.warning('failed to generate elapsed time')
        text = 'elapsed time not available'
    else:
        text = 'took {}'.format(naturaldelta(parse(end) - parse(start)))
    return to_utc_timestamp(start_time), to_utc_timestamp(end_time), text