60 lines
2.0 KiB
Python
60 lines
2.0 KiB
Python
|
# Copyright 2017 Elisey Zanko
|
||
|
|
#
|
||
|
|
# 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
|
||
|
|
import typing
|
||
|
|
|
||
|
|
from tenacity import BaseRetrying
|
||
|
|
from tenacity import DoAttempt
|
||
|
|
from tenacity import DoSleep
|
||
|
|
from tenacity import RetryCallState
|
||
|
|
|
||
|
|
from tornado import gen
|
||
|
|
|
||
|
|
if typing.TYPE_CHECKING:
|
||
|
|
from tornado.concurrent import Future
|
||
|
|
|
||
|
|
_RetValT = typing.TypeVar("_RetValT")
|
||
|
|
|
||
|
|
|
||
|
|
class TornadoRetrying(BaseRetrying):
|
||
|
|
def __init__(self, sleep: "typing.Callable[[float], Future[None]]" = gen.sleep, **kwargs: typing.Any) -> None:
|
||
|
|
super().__init__(**kwargs)
|
||
|
|
self.sleep = sleep
|
||
|
|
|
||
|
|
@gen.coroutine # type: ignore[misc]
|
||
|
|
def __call__(
|
||
|
|
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()) # type: ignore[arg-type]
|
||
|
|
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)
|