def wrapper(*args, **kwargs):
try:
return func(*args, **kwargs)
except self.exception_tuple as e:
# match on `caused_by`
if self.caused_by_tuple is None or isinstance(e, WrapperException) and isinstance(e.caused_by, self.caused_by_tuple):
# get self reference -> get subclass of RetryableTask
cur_task = args[0]
# use exponential backoff for retrying
retry_time = CeleryUtil.exp_backoff(cur_task, self.max_retry_time)
# log error
Util.log_will_retry(retry_time, exc = e, what = func.__name__)
# retry
raise cur_task.retry(args = cur_task.get_retry_arguments(),
exc = e,
max_retries = self.max_retries,
countdown = retry_time
)
# no match on exceptions -> no retry! -> propagate exception
raise e, None, sys.exc_info()[2]