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# Copyright 2016 Étienne Bersac
# Copyright 2016 Julien Danjou
# Copyright 2016 Joshua Harlow
# Copyright 2013-2014 Ray Holder
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import functools
import sys
import typing as t
from asyncio import sleep
from pip._vendor.tenacity import AttemptManager
from pip._vendor.tenacity import BaseRetrying
from pip._vendor.tenacity import DoAttempt
from pip._vendor.tenacity import DoSleep
from pip._vendor.tenacity import RetryCallState
WrappedFnReturnT = t.TypeVar("WrappedFnReturnT")
WrappedFn = t.TypeVar("WrappedFn", bound=t.Callable[..., t.Awaitable[t.Any]])
class AsyncRetrying(BaseRetrying):
sleep: t.Callable[[float], t.Awaitable[t.Any]]
def __init__(self, sleep: t.Callable[[float], t.Awaitable[t.Any]] = sleep, **kwargs: t.Any) -> None:
super().__init__(**kwargs)
self.sleep = sleep
async def __call__( # type: ignore[override]
self, fn: WrappedFn, *args: t.Any, **kwargs: t.Any
) -> WrappedFnReturnT:
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()) # type: ignore[arg-type]
else:
retry_state.set_result(result)
elif isinstance(do, DoSleep):
retry_state.prepare_for_next_attempt()
await self.sleep(do)
else:
return do # type: ignore[no-any-return]
def __iter__(self) -> t.Generator[AttemptManager, None, None]:
raise TypeError("AsyncRetrying object is not iterable")
def __aiter__(self) -> "AsyncRetrying":
self.begin()
self._retry_state = RetryCallState(self, fn=None, args=(), kwargs={})
return self
async def __anext__(self) -> AttemptManager:
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:
raise StopAsyncIteration
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: t.Any, **kwargs: t.Any) -> t.Any:
return await fn(*args, **kwargs)
# Preserve attributes
async_wrapped.retry = fn.retry # type: ignore[attr-defined]
async_wrapped.retry_with = fn.retry_with # type: ignore[attr-defined]
return async_wrapped # type: ignore[return-value]