class AsyncRetrying(BaseRetrying):
def __init__(self, sleep=sleep, **kwargs):
super(AsyncRetrying, self).__init__(**kwargs)
self.sleep = sleep
async def __call__(self, fn, *args, **kwargs):
self.begin(fn)
retry_state = RetryCallState(retry_object=self,
fn=fn,
args=args,
kwargs=kwargs)
while True:
do = self.iter(retry_state=retry_state)
if isinstance(do, DoAttempt):
try:
result = await fn(*args, **kwargs)
except BaseException:
retry_state.set_exception(sys.exc_info())
else:
retry_state.set_result(result)
elif isinstance(do, DoSleep):
retry_state.prepare_for_next_attempt()
await self.sleep(do)
else:
return do
def __aiter__(self):
self.begin(None)
self._retry_state = RetryCallState(self, fn=None, args=(), kwargs={})
return self
async def __anext__(self):
while True:
do = self.iter(retry_state=self._retry_state)
if do is None:
raise StopAsyncIteration
elif isinstance(do, DoAttempt):
return AttemptManager(retry_state=self._retry_state)
elif isinstance(do, DoSleep):
self._retry_state.prepare_for_next_attempt()
await self.sleep(do)
else:
return do
def wraps(self, fn):
fn = super().wraps(fn)
# Ensure wrapper is recognized as a coroutine function.
async def async_wrapped(*args, **kwargs):
return await fn(*args, **kwargs)
# Preserve attributes
async_wrapped.retry = fn.retry
async_wrapped.retry_with = fn.retry_with
return async_wrapped
async def __call__( # type: ignore # Change signature from supertype
self,
fn: typing.Callable[..., typing.Awaitable[_RetValT]],
*args: typing.Any,
**kwargs: typing.Any,
) -> _RetValT:
self.begin()
retry_state = RetryCallState(retry_object=self,
fn=fn,
args=args,
kwargs=kwargs)
while True:
do = self.iter(retry_state=retry_state)
if isinstance(do, DoAttempt):
try:
result = await fn(*args, **kwargs)
except BaseException: # noqa: B902
retry_state.set_exception(sys.exc_info())
else:
retry_state.set_result(result)
elif isinstance(do, DoSleep):
retry_state.prepare_for_next_attempt()
await self.sleep(do)
else:
return do
def __call__( # type: ignore # Change signature from supertype
self,
fn:
"typing.Callable[..., typing.Union[typing.Generator[typing.Any, typing.Any, _RetValT], Future[_RetValT]]]",
*args: typing.Any,
**kwargs: typing.Any,
) -> "typing.Generator[typing.Any, typing.Any, _RetValT]":
self.begin()
retry_state = RetryCallState(retry_object=self,
fn=fn,
args=args,
kwargs=kwargs)
while True:
do = self.iter(retry_state=retry_state)
if isinstance(do, DoAttempt):
try:
result = yield fn(*args, **kwargs)
except BaseException: # noqa: B902
retry_state.set_exception(sys.exc_info())
else:
retry_state.set_result(result)
elif isinstance(do, DoSleep):
retry_state.prepare_for_next_attempt()
yield self.sleep(do)
else:
raise gen.Return(do)
def _make_wait_call_state(previous_attempt_number,
delay_since_first_attempt,
last_result=None):
required_parameter_unset = (previous_attempt_number is _unset
or delay_since_first_attempt is _unset)
if required_parameter_unset:
missing = []
if previous_attempt_number is _unset:
missing.append('previous_attempt_number')
if delay_since_first_attempt is _unset:
missing.append('delay_since_first_attempt')
missing_str = ', '.join(repr(s) for s in missing)
raise TypeError('wait func missing parameters: ' + missing_str)
from tenacity import RetryCallState
retry_state = RetryCallState(None, None, (), {})
retry_state.attempt_number = previous_attempt_number
if last_result is not None:
retry_state.outcome = last_result
else:
retry_state.set_result(None)
# Ensure outcome_timestamp - start_time is *exactly* equal to the delay to
# avoid complexity in test code.
retry_state.start_time = Fraction(retry_state.start_time)
retry_state.outcome_timestamp = (retry_state.start_time +
Fraction(delay_since_first_attempt))
assert retry_state.seconds_since_start == delay_since_first_attempt
return retry_state
def new_fn(self, attempt=_unset, retry_state=None):
if retry_state is None:
from tenacity import RetryCallState
if attempt is _unset:
raise _make_unset_exception('retry', attempt=attempt)
retry_state_passed_as_non_kwarg = (
attempt is not _unset and
isinstance(attempt, RetryCallState))
if retry_state_passed_as_non_kwarg:
retry_state = attempt
else:
warn_about_dunder_non_retry_state_deprecation(fn, stacklevel=2)
retry_state = RetryCallState(None, None, (), {})
retry_state.outcome = attempt
return fn(self, retry_state=retry_state)
class AsyncRetrying(BaseRetrying):
def __init__(self, sleep=sleep, **kwargs):
super(AsyncRetrying, self).__init__(**kwargs)
self.sleep = sleep
async def call(self, fn, *args, **kwargs):
self.begin(fn)
retry_state = RetryCallState(retry_object=self,
fn=fn,
args=args,
kwargs=kwargs)
while True:
do = self.iter(retry_state=retry_state)
if isinstance(do, DoAttempt):
try:
result = await fn(*args, **kwargs)
except BaseException:
retry_state.set_exception(sys.exc_info())
else:
retry_state.set_result(result)
elif isinstance(do, DoSleep):
retry_state.prepare_for_next_attempt()
await self.sleep(do)
else:
return do
def __aiter__(self):
self.begin(None)
self._retry_state = RetryCallState(self, fn=None, args=(), kwargs={})
return self
async def __anext__(self):
while True:
do = self.iter(retry_state=self._retry_state)
if do is None:
raise StopAsyncIteration
elif isinstance(do, DoAttempt):
return AttemptManager(retry_state=self._retry_state)
elif isinstance(do, DoSleep):
self._retry_state.prepare_for_next_attempt()
await self.sleep(do)
else:
return do
def _make_wait_call_state(previous_attempt_number,
delay_since_first_attempt,
last_result=None):
required_parameter_unset = (previous_attempt_number is _unset
or delay_since_first_attempt is _unset)
if required_parameter_unset:
missing = []
if previous_attempt_number is _unset:
missing.append('previous_attempt_number')
if delay_since_first_attempt is _unset:
missing.append('delay_since_first_attempt')
missing_str = ', '.join(repr(s) for s in missing)
raise TypeError('wait func missing parameters: ' + missing_str)
from tenacity import RetryCallState
call_state = RetryCallState(None, (), {})
call_state.attempt_number = previous_attempt_number
call_state.outcome_timestamp = (call_state.start_time +
delay_since_first_attempt)
call_state.outcome = last_result
return call_state
def make_retry_state(previous_attempt_number,
delay_since_first_attempt,
last_result=None):
"""Construct RetryCallState for given attempt number & delay.
Only used in testing and thus is extra careful about timestamp arithmetics.
"""
required_parameter_unset = previous_attempt_number is _unset or delay_since_first_attempt is _unset
if required_parameter_unset:
raise _make_unset_exception(
"wait/stop",
previous_attempt_number=previous_attempt_number,
delay_since_first_attempt=delay_since_first_attempt,
)
from tenacity import RetryCallState
retry_state = RetryCallState(None, None, (), {})
retry_state.attempt_number = previous_attempt_number
if last_result is not None:
retry_state.outcome = last_result
else:
retry_state.set_result(None)
_set_delay_since_start(retry_state, delay_since_first_attempt)
return retry_state
def make_retry_state(previous_attempt_number, delay_since_first_attempt,
last_result=None):
"""Construct RetryCallState for given attempt number & delay.
Only used in testing and thus is extra careful about timestamp arithmetics.
"""
required_parameter_unset = (previous_attempt_number is _unset or
delay_since_first_attempt is _unset)
if required_parameter_unset:
raise _make_unset_exception(
'wait/stop',
previous_attempt_number=previous_attempt_number,
delay_since_first_attempt=delay_since_first_attempt)
from tenacity import RetryCallState
retry_state = RetryCallState(None, None, (), {})
retry_state.attempt_number = previous_attempt_number
if last_result is not None:
retry_state.outcome = last_result
else:
retry_state.set_result(None)
_set_delay_since_start(retry_state, delay_since_first_attempt)
return retry_state
async def __call__(self, fn, *args, **kwargs):
self.begin(fn)
retry_state = RetryCallState(retry_object=self, fn=fn, args=args, kwargs=kwargs)
while True:
do = self.iter(retry_state=retry_state)
if isinstance(do, DoAttempt):
try:
result = await fn(*args, **kwargs)
except BaseException: # noqa: B902
retry_state.set_exception(sys.exc_info())
else:
retry_state.set_result(result)
elif isinstance(do, DoSleep):
retry_state.prepare_for_next_attempt()
await self.sleep(do)
else:
return do
def call(self, fn, *args, **kwargs):
self.begin(fn)
call_state = RetryCallState(fn=fn, args=args, kwargs=kwargs)
while True:
do = self.iter(call_state=call_state)
if isinstance(do, DoAttempt):
call_state.attempt_number += 1
try:
result = yield from fn(*args, **kwargs)
except BaseException:
call_state.set_exception(sys.exc_info())
else:
call_state.set_result(result)
elif isinstance(do, DoSleep):
call_state.prepare_for_next_attempt()
yield from self.sleep(do)
else:
return do
def call(self, fn, *args, **kwargs):
self.begin(fn)
retry_state = RetryCallState(
retry_object=self, fn=fn, args=args, kwargs=kwargs)
while True:
do = self.iter(retry_state=retry_state)
if isinstance(do, DoAttempt):
try:
result = yield fn(*args, **kwargs)
except BaseException:
retry_state.set_exception(sys.exc_info())
else:
retry_state.set_result(result)
elif isinstance(do, DoSleep):
retry_state.prepare_for_next_attempt()
yield self.sleep(do)
else:
raise gen.Return(do)
def __aiter__(self):
self.begin(None)
self._retry_state = RetryCallState(self, fn=None, args=(), kwargs={})
return self
class AsyncRetrying(BaseRetrying):
"""This is a modified version of the tenacity.AsyncRetrying class that handles asynchronously defined retry or
retry_error_callback parameters.
There is an open PR for this change on the tenacity repository: https://github.com/jd/tenacity/pull/289
"""
def __init__(self, sleep=asyncio.sleep, **kwargs):
super().__init__(**kwargs)
self.sleep = sleep
async def iter(self, retry_state):
fut = retry_state.outcome
if fut is None:
if self.before is not None:
self.before(retry_state)
return DoAttempt()
is_explicit_retry = retry_state.outcome.failed and isinstance(
retry_state.outcome.exception(), TryAgain)
if iscoroutinefunction(self.retry):
should_retry = await self.retry(retry_state=retry_state)
else:
should_retry = self.retry(retry_state=retry_state)
if not (is_explicit_retry or should_retry):
return fut.result()
if self.after is not None:
self.after(retry_state=retry_state)
self.statistics[
"delay_since_first_attempt"] = retry_state.seconds_since_start
if self.stop(retry_state=retry_state):
if self.retry_error_callback:
if iscoroutinefunction(self.retry_error_callback):
return await self.retry_error_callback(
retry_state=retry_state)
return self.retry_error_callback(retry_state=retry_state)
retry_exc = self.retry_error_cls(fut)
if self.reraise:
raise retry_exc.reraise()
six.raise_from(retry_exc, fut.exception())
if self.wait:
iteration_sleep = self.wait(retry_state=retry_state)
else:
iteration_sleep = 0.0
retry_state.next_action = RetryAction(iteration_sleep)
retry_state.idle_for += iteration_sleep
self.statistics["idle_for"] += iteration_sleep
self.statistics["attempt_number"] += 1
if self.before_sleep is not None:
self.before_sleep(retry_state=retry_state)
return DoSleep(iteration_sleep)
async def __call__(self, fn, *args, **kwargs):
self.begin()
retry_state = RetryCallState(retry_object=self,
fn=fn,
args=args,
kwargs=kwargs)
while True:
do = await self.iter(retry_state=retry_state)
if isinstance(do, DoAttempt):
try:
result = await fn(*args, **kwargs)
except BaseException:
retry_state.set_exception(sys.exc_info())
else:
retry_state.set_result(result)
elif isinstance(do, DoSleep):
retry_state.prepare_for_next_attempt()
await self.sleep(do)
else:
return do
def __aiter__(self):
self.begin(None)
self._retry_state = RetryCallState(self, fn=None, args=(), kwargs={})
return self
async def __anext__(self):
while True:
do = await self.iter(retry_state=self._retry_state)
if do is None:
raise StopAsyncIteration
if isinstance(do, DoAttempt):
return AttemptManager(retry_state=self._retry_state)
if isinstance(do, DoSleep):
self._retry_state.prepare_for_next_attempt()
await self.sleep(do)
else:
return do
def wraps(self, fn):
fn = super().wraps(fn)
# Ensure wrapper is recognized as a coroutine function.
async def async_wrapped(*args, **kwargs):
return await fn(*args, **kwargs)
# Preserve attributes
async_wrapped.retry = fn.retry
async_wrapped.retry_with = fn.retry_with
return async_wrapped
def retry_state(self):
retry_state = RetryCallState(object(), lambda x: x, (), {})
retry_state.outcome = Future(attempt_number=1)
return retry_state
class AsyncRetrying(BaseRetrying):
def __init__(self,
sleep: typing.Callable[[float], typing.Awaitable] = sleep,
**kwargs: typing.Any) -> None:
super().__init__(**kwargs)
self.sleep = sleep
async def __call__( # type: ignore # Change signature from supertype
self,
fn: typing.Callable[..., typing.Awaitable[_RetValT]],
*args: typing.Any,
**kwargs: typing.Any,
) -> _RetValT:
self.begin()
retry_state = RetryCallState(retry_object=self,
fn=fn,
args=args,
kwargs=kwargs)
while True:
do = self.iter(retry_state=retry_state)
if isinstance(do, DoAttempt):
try:
result = await fn(*args, **kwargs)
except BaseException: # noqa: B902
retry_state.set_exception(sys.exc_info())
else:
retry_state.set_result(result)
elif isinstance(do, DoSleep):
retry_state.prepare_for_next_attempt()
await self.sleep(do)
else:
return do
def __aiter__(self) -> "AsyncRetrying":
self.begin()
self._retry_state = RetryCallState(self, fn=None, args=(), kwargs={})
return self
async def __anext__(self) -> typing.Union[AttemptManager, typing.Any]:
while True:
do = self.iter(retry_state=self._retry_state)
if do is None:
raise StopAsyncIteration
elif isinstance(do, DoAttempt):
return AttemptManager(retry_state=self._retry_state)
elif isinstance(do, DoSleep):
self._retry_state.prepare_for_next_attempt()
await self.sleep(do)
else:
return do
def wraps(self, fn: WrappedFn) -> WrappedFn:
fn = super().wraps(fn)
# Ensure wrapper is recognized as a coroutine function.
@functools.wraps(fn)
async def async_wrapped(*args: typing.Any,
**kwargs: typing.Any) -> typing.Any:
return await fn(*args, **kwargs)
# Preserve attributes
async_wrapped.retry = fn.retry
async_wrapped.retry_with = fn.retry_with
return async_wrapped
def __aiter__(self) -> "AsyncRetrying":
self.begin()
self._retry_state = RetryCallState(self, fn=None, args=(), kwargs={})
return self
