wait.py 文件源码

def wait_exception(lfunction):
    """Returns with the exception or raises one."""
    start_time = time.time()
    while True:
        try:
            lfunction()
        except BaseException as exc:
            LOG.info('Exception in %d second',
                     time.time() - start_time)
            return exc
        dtime = time.time() - start_time
        if dtime > CONF.boto.build_timeout:
            raise TestCase.failureException("Wait timeout exceeded! (%ds)" %
                                            dtime)
        time.sleep(CONF.boto.build_interval)

# TODO(afazekas): consider strategy design pattern..