81 lines
2.8 KiB
Python
81 lines
2.8 KiB
Python
# -*- coding: utf-8 -*-
|
|
# 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 sys
|
|
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
|
|
|
|
|
|
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: # 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):
|
|
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
|