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December 14, 2015 09:18
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__retry decorator
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class ApiClient(object): | |
default_retries = (1, 2, 5, 10, 20, 30) | |
def __retry(func): | |
@wraps(func) | |
def wrapper(self, *args, **kwargs): | |
retries = kwargs.pop('retries', self.default_retries) | |
try: | |
if kwargs.pop('reconnect', False): | |
self.__init__(self.ftp_uri, retries=()) | |
return func(self, *args, **kwargs) | |
except (IOError, OSError, EOFError): | |
if retries: | |
#exc_type, exc_value, exc_tb = sys.exc_info() | |
# TODO: strip 2 upper entries from exc_tb cause they are | |
# just wrapper calls | |
logger.exception( | |
"%s(%s, %s) raised exception. %s retries left. Sleeping %s secs. Caller traceback: %s\nInternal traceback:", | |
func.__name__, args, kwargs, len(retries), retries[0], | |
''.join(traceback.format_stack( | |
f=sys._getframe( | |
1 + len(self.default_retries) - len(retries) | |
), | |
limit=10, | |
)), | |
) | |
time.sleep(retries[0]) | |
kwargs['retries'] = retries[1:] | |
kwargs['reconnect'] = True | |
return wrapper(self, *args, **kwargs) | |
else: | |
raise | |
return wrapper | |
@__retry | |
def __init__(self, uri): | |
self.uri = uri | |
# open connection to uri, blabla | |
@__retry | |
def do_stuff(self): | |
# eg: do stuff with self.connection | |
pass |
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