def report_with_backoff()

in skywalking/agent/__init__.py [0:0]

• 17 lines of code
• 9 McCabe index (conditional complexity)

def report_with_backoff(reporter_name, init_wait):
    """
    An exponential backoff for retrying reporters.
    """

    def backoff_decorator(func):
        @functools.wraps(func)
        def backoff_wrapper(self, *args, **kwargs):
            wait = base = init_wait
            while not self._finished.is_set():
                try:
                    flag = func(self, *args, **kwargs)
                    # for segment/log reporter, if the queue not empty(return True), we should keep reporter working
                    # for other cases(return false or None), reset to base wait time on success
                    wait = 0 if flag else base
                except Exception:  # noqa
                    wait = min(60, wait * 2 or 1)  # double wait time with each consecutive error up to a maximum
                    logger.exception(f'Exception in {reporter_name} service in pid {os.getpid()}, '
                                     f'retry in {wait} seconds')
                self._finished.wait(wait)
            logger.info('finished reporter thread')

        return backoff_wrapper

    return backoff_decorator