You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
609 lines
20 KiB
Python
609 lines
20 KiB
Python
![]()
2 months ago
|
# Copyright 2016-2018 Julien Danjou
|
||
|
# Copyright 2017 Elisey Zanko
|
||
|
# Copyright 2016 Étienne Bersac
|
||
|
# 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 threading
|
||
|
import time
|
||
|
import typing as t
|
||
|
import warnings
|
||
|
from abc import ABC, abstractmethod
|
||
|
from concurrent import futures
|
||
|
from inspect import iscoroutinefunction
|
||
|
|
||
|
# Import all built-in retry strategies for easier usage.
|
||
|
from .retry import retry_base # noqa
|
||
|
from .retry import retry_all # noqa
|
||
|
from .retry import retry_always # noqa
|
||
|
from .retry import retry_any # noqa
|
||
|
from .retry import retry_if_exception # noqa
|
||
|
from .retry import retry_if_exception_type # noqa
|
||
|
from .retry import retry_if_exception_cause_type # noqa
|
||
|
from .retry import retry_if_not_exception_type # noqa
|
||
|
from .retry import retry_if_not_result # noqa
|
||
|
from .retry import retry_if_result # noqa
|
||
|
from .retry import retry_never # noqa
|
||
|
from .retry import retry_unless_exception_type # noqa
|
||
|
from .retry import retry_if_exception_message # noqa
|
||
|
from .retry import retry_if_not_exception_message # noqa
|
||
|
|
||
|
# Import all nap strategies for easier usage.
|
||
|
from .nap import sleep # noqa
|
||
|
from .nap import sleep_using_event # noqa
|
||
|
|
||
|
# Import all built-in stop strategies for easier usage.
|
||
|
from .stop import stop_after_attempt # noqa
|
||
|
from .stop import stop_after_delay # noqa
|
||
|
from .stop import stop_all # noqa
|
||
|
from .stop import stop_any # noqa
|
||
|
from .stop import stop_never # noqa
|
||
|
from .stop import stop_when_event_set # noqa
|
||
|
|
||
|
# Import all built-in wait strategies for easier usage.
|
||
|
from .wait import wait_chain # noqa
|
||
|
from .wait import wait_combine # noqa
|
||
|
from .wait import wait_exponential # noqa
|
||
|
from .wait import wait_fixed # noqa
|
||
|
from .wait import wait_incrementing # noqa
|
||
|
from .wait import wait_none # noqa
|
||
|
from .wait import wait_random # noqa
|
||
|
from .wait import wait_random_exponential # noqa
|
||
|
from .wait import wait_random_exponential as wait_full_jitter # noqa
|
||
|
from .wait import wait_exponential_jitter # noqa
|
||
|
|
||
|
# Import all built-in before strategies for easier usage.
|
||
|
from .before import before_log # noqa
|
||
|
from .before import before_nothing # noqa
|
||
|
|
||
|
# Import all built-in after strategies for easier usage.
|
||
|
from .after import after_log # noqa
|
||
|
from .after import after_nothing # noqa
|
||
|
|
||
|
# Import all built-in after strategies for easier usage.
|
||
|
from .before_sleep import before_sleep_log # noqa
|
||
|
from .before_sleep import before_sleep_nothing # noqa
|
||
|
|
||
|
# Replace a conditional import with a hard-coded None so that pip does
|
||
|
# not attempt to use tornado even if it is present in the environment.
|
||
|
# If tornado is non-None, tenacity will attempt to execute some code
|
||
|
# that is sensitive to the version of tornado, which could break pip
|
||
|
# if an old version is found.
|
||
|
tornado = None # type: ignore
|
||
|
|
||
|
if t.TYPE_CHECKING:
|
||
|
import types
|
||
|
|
||
|
from .retry import RetryBaseT
|
||
|
from .stop import StopBaseT
|
||
|
from .wait import WaitBaseT
|
||
|
|
||
|
|
||
|
WrappedFnReturnT = t.TypeVar("WrappedFnReturnT")
|
||
|
WrappedFn = t.TypeVar("WrappedFn", bound=t.Callable[..., t.Any])
|
||
|
|
||
|
|
||
|
class TryAgain(Exception):
|
||
|
"""Always retry the executed function when raised."""
|
||
|
|
||
|
|
||
|
NO_RESULT = object()
|
||
|
|
||
|
|
||
|
class DoAttempt:
|
||
|
pass
|
||
|
|
||
|
|
||
|
class DoSleep(float):
|
||
|
pass
|
||
|
|
||
|
|
||
|
class BaseAction:
|
||
|
"""Base class for representing actions to take by retry object.
|
||
|
|
||
|
Concrete implementations must define:
|
||
|
- __init__: to initialize all necessary fields
|
||
|
- REPR_FIELDS: class variable specifying attributes to include in repr(self)
|
||
|
- NAME: for identification in retry object methods and callbacks
|
||
|
"""
|
||
|
|
||
|
REPR_FIELDS: t.Sequence[str] = ()
|
||
|
NAME: t.Optional[str] = None
|
||
|
|
||
|
def __repr__(self) -> str:
|
||
|
state_str = ", ".join(f"{field}={getattr(self, field)!r}" for field in self.REPR_FIELDS)
|
||
|
return f"{self.__class__.__name__}({state_str})"
|
||
|
|
||
|
def __str__(self) -> str:
|
||
|
return repr(self)
|
||
|
|
||
|
|
||
|
class RetryAction(BaseAction):
|
||
|
REPR_FIELDS = ("sleep",)
|
||
|
NAME = "retry"
|
||
|
|
||
|
def __init__(self, sleep: t.SupportsFloat) -> None:
|
||
|
self.sleep = float(sleep)
|
||
|
|
||
|
|
||
|
_unset = object()
|
||
|
|
||
|
|
||
|
def _first_set(first: t.Union[t.Any, object], second: t.Any) -> t.Any:
|
||
|
return second if first is _unset else first
|
||
|
|
||
|
|
||
|
class RetryError(Exception):
|
||
|
"""Encapsulates the last attempt instance right before giving up."""
|
||
|
|
||
|
def __init__(self, last_attempt: "Future") -> None:
|
||
|
self.last_attempt = last_attempt
|
||
|
super().__init__(last_attempt)
|
||
|
|
||
|
def reraise(self) -> "t.NoReturn":
|
||
|
if self.last_attempt.failed:
|
||
|
raise self.last_attempt.result()
|
||
|
raise self
|
||
|
|
||
|
def __str__(self) -> str:
|
||
|
return f"{self.__class__.__name__}[{self.last_attempt}]"
|
||
|
|
||
|
|
||
|
class AttemptManager:
|
||
|
"""Manage attempt context."""
|
||
|
|
||
|
def __init__(self, retry_state: "RetryCallState"):
|
||
|
self.retry_state = retry_state
|
||
|
|
||
|
def __enter__(self) -> None:
|
||
|
pass
|
||
|
|
||
|
def __exit__(
|
||
|
self,
|
||
|
exc_type: t.Optional[t.Type[BaseException]],
|
||
|
exc_value: t.Optional[BaseException],
|
||
|
traceback: t.Optional["types.TracebackType"],
|
||
|
) -> t.Optional[bool]:
|
||
|
if exc_type is not None and exc_value is not None:
|
||
|
self.retry_state.set_exception((exc_type, exc_value, traceback))
|
||
|
return True # Swallow exception.
|
||
|
else:
|
||
|
# We don't have the result, actually.
|
||
|
self.retry_state.set_result(None)
|
||
|
return None
|
||
|
|
||
|
|
||
|
class BaseRetrying(ABC):
|
||
|
def __init__(
|
||
|
self,
|
||
|
sleep: t.Callable[[t.Union[int, float]], None] = sleep,
|
||
|
stop: "StopBaseT" = stop_never,
|
||
|
wait: "WaitBaseT" = wait_none(),
|
||
|
retry: "RetryBaseT" = retry_if_exception_type(),
|
||
|
before: t.Callable[["RetryCallState"], None] = before_nothing,
|
||
|
after: t.Callable[["RetryCallState"], None] = after_nothing,
|
||
|
before_sleep: t.Optional[t.Callable[["RetryCallState"], None]] = None,
|
||
|
reraise: bool = False,
|
||
|
retry_error_cls: t.Type[RetryError] = RetryError,
|
||
|
retry_error_callback: t.Optional[t.Callable[["RetryCallState"], t.Any]] = None,
|
||
|
):
|
||
|
self.sleep = sleep
|
||
|
self.stop = stop
|
||
|
self.wait = wait
|
||
|
self.retry = retry
|
||
|
self.before = before
|
||
|
self.after = after
|
||
|
self.before_sleep = before_sleep
|
||
|
self.reraise = reraise
|
||
|
self._local = threading.local()
|
||
|
self.retry_error_cls = retry_error_cls
|
||
|
self.retry_error_callback = retry_error_callback
|
||
|
|
||
|
def copy(
|
||
|
self,
|
||
|
sleep: t.Union[t.Callable[[t.Union[int, float]], None], object] = _unset,
|
||
|
stop: t.Union["StopBaseT", object] = _unset,
|
||
|
wait: t.Union["WaitBaseT", object] = _unset,
|
||
|
retry: t.Union[retry_base, object] = _unset,
|
||
|
before: t.Union[t.Callable[["RetryCallState"], None], object] = _unset,
|
||
|
after: t.Union[t.Callable[["RetryCallState"], None], object] = _unset,
|
||
|
before_sleep: t.Union[t.Optional[t.Callable[["RetryCallState"], None]], object] = _unset,
|
||
|
reraise: t.Union[bool, object] = _unset,
|
||
|
retry_error_cls: t.Union[t.Type[RetryError], object] = _unset,
|
||
|
retry_error_callback: t.Union[t.Optional[t.Callable[["RetryCallState"], t.Any]], object] = _unset,
|
||
|
) -> "BaseRetrying":
|
||
|
"""Copy this object with some parameters changed if needed."""
|
||
|
return self.__class__(
|
||
|
sleep=_first_set(sleep, self.sleep),
|
||
|
stop=_first_set(stop, self.stop),
|
||
|
wait=_first_set(wait, self.wait),
|
||
|
retry=_first_set(retry, self.retry),
|
||
|
before=_first_set(before, self.before),
|
||
|
after=_first_set(after, self.after),
|
||
|
before_sleep=_first_set(before_sleep, self.before_sleep),
|
||
|
reraise=_first_set(reraise, self.reraise),
|
||
|
retry_error_cls=_first_set(retry_error_cls, self.retry_error_cls),
|
||
|
retry_error_callback=_first_set(retry_error_callback, self.retry_error_callback),
|
||
|
)
|
||
|
|
||
|
def __repr__(self) -> str:
|
||
|
return (
|
||
|
f"<{self.__class__.__name__} object at 0x{id(self):x} ("
|
||
|
f"stop={self.stop}, "
|
||
|
f"wait={self.wait}, "
|
||
|
f"sleep={self.sleep}, "
|
||
|
f"retry={self.retry}, "
|
||
|
f"before={self.before}, "
|
||
|
f"after={self.after})>"
|
||
|
)
|
||
|
|
||
|
@property
|
||
|
def statistics(self) -> t.Dict[str, t.Any]:
|
||
|
"""Return a dictionary of runtime statistics.
|
||
|
|
||
|
This dictionary will be empty when the controller has never been
|
||
|
ran. When it is running or has ran previously it should have (but
|
||
|
may not) have useful and/or informational keys and values when
|
||
|
running is underway and/or completed.
|
||
|
|
||
|
.. warning:: The keys in this dictionary **should** be some what
|
||
|
stable (not changing), but there existence **may**
|
||
|
change between major releases as new statistics are
|
||
|
gathered or removed so before accessing keys ensure that
|
||
|
they actually exist and handle when they do not.
|
||
|
|
||
|
.. note:: The values in this dictionary are local to the thread
|
||
|
running call (so if multiple threads share the same retrying
|
||
|
object - either directly or indirectly) they will each have
|
||
|
there own view of statistics they have collected (in the
|
||
|
future we may provide a way to aggregate the various
|
||
|
statistics from each thread).
|
||
|
"""
|
||
|
try:
|
||
|
return self._local.statistics # type: ignore[no-any-return]
|
||
|
except AttributeError:
|
||
|
self._local.statistics = t.cast(t.Dict[str, t.Any], {})
|
||
|
return self._local.statistics
|
||
|
|
||
|
def wraps(self, f: WrappedFn) -> WrappedFn:
|
||
|
"""Wrap a function for retrying.
|
||
|
|
||
|
:param f: A function to wraps for retrying.
|
||
|
"""
|
||
|
|
||
|
@functools.wraps(f)
|
||
|
def wrapped_f(*args: t.Any, **kw: t.Any) -> t.Any:
|
||
|
return self(f, *args, **kw)
|
||
|
|
||
|
def retry_with(*args: t.Any, **kwargs: t.Any) -> WrappedFn:
|
||
|
return self.copy(*args, **kwargs).wraps(f)
|
||
|
|
||
|
wrapped_f.retry = self # type: ignore[attr-defined]
|
||
|
wrapped_f.retry_with = retry_with # type: ignore[attr-defined]
|
||
|
|
||
|
return wrapped_f # type: ignore[return-value]
|
||
|
|
||
|
def begin(self) -> None:
|
||
|
self.statistics.clear()
|
||
|
self.statistics["start_time"] = time.monotonic()
|
||
|
self.statistics["attempt_number"] = 1
|
||
|
self.statistics["idle_for"] = 0
|
||
|
|
||
|
def iter(self, retry_state: "RetryCallState") -> t.Union[DoAttempt, DoSleep, t.Any]: # noqa
|
||
|
fut = retry_state.outcome
|
||
|
if fut is None:
|
||
|
if self.before is not None:
|
||
|
self.before(retry_state)
|
||
|
return DoAttempt()
|
||
|
|
||
|
is_explicit_retry = fut.failed and isinstance(fut.exception(), TryAgain)
|
||
|
if not (is_explicit_retry or self.retry(retry_state)):
|
||
|
return fut.result()
|
||
|
|
||
|
if self.after is not None:
|
||
|
self.after(retry_state)
|
||
|
|
||
|
self.statistics["delay_since_first_attempt"] = retry_state.seconds_since_start
|
||
|
if self.stop(retry_state):
|
||
|
if self.retry_error_callback:
|
||
|
return self.retry_error_callback(retry_state)
|
||
|
retry_exc = self.retry_error_cls(fut)
|
||
|
if self.reraise:
|
||
|
raise retry_exc.reraise()
|
||
|
raise retry_exc from fut.exception()
|
||
|
|
||
|
if self.wait:
|
||
|
sleep = self.wait(retry_state)
|
||
|
else:
|
||
|
sleep = 0.0
|
||
|
retry_state.next_action = RetryAction(sleep)
|
||
|
retry_state.idle_for += sleep
|
||
|
self.statistics["idle_for"] += sleep
|
||
|
self.statistics["attempt_number"] += 1
|
||
|
|
||
|
if self.before_sleep is not None:
|
||
|
self.before_sleep(retry_state)
|
||
|
|
||
|
return DoSleep(sleep)
|
||
|
|
||
|
def __iter__(self) -> t.Generator[AttemptManager, None, None]:
|
||
|
self.begin()
|
||
|
|
||
|
retry_state = RetryCallState(self, fn=None, args=(), kwargs={})
|
||
|
while True:
|
||
|
do = self.iter(retry_state=retry_state)
|
||
|
if isinstance(do, DoAttempt):
|
||
|
yield AttemptManager(retry_state=retry_state)
|
||
|
elif isinstance(do, DoSleep):
|
||
|
retry_state.prepare_for_next_attempt()
|
||
|
self.sleep(do)
|
||
|
else:
|
||
|
break
|
||
|
|
||
|
@abstractmethod
|
||
|
def __call__(
|
||
|
self,
|
||
|
fn: t.Callable[..., WrappedFnReturnT],
|
||
|
*args: t.Any,
|
||
|
**kwargs: t.Any,
|
||
|
) -> WrappedFnReturnT:
|
||
|
pass
|
||
|
|
||
|
|
||
|
class Retrying(BaseRetrying):
|
||
|
"""Retrying controller."""
|
||
|
|
||
|
def __call__(
|
||
|
self,
|
||
|
fn: t.Callable[..., WrappedFnReturnT],
|
||
|
*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 = 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()
|
||
|
self.sleep(do)
|
||
|
else:
|
||
|
return do # type: ignore[no-any-return]
|
||
|
|
||
|
|
||
|
if sys.version_info[1] >= 9:
|
||
|
FutureGenericT = futures.Future[t.Any]
|
||
|
else:
|
||
|
FutureGenericT = futures.Future
|
||
|
|
||
|
|
||
|
class Future(FutureGenericT):
|
||
|
"""Encapsulates a (future or past) attempted call to a target function."""
|
||
|
|
||
|
def __init__(self, attempt_number: int) -> None:
|
||
|
super().__init__()
|
||
|
self.attempt_number = attempt_number
|
||
|
|
||
|
@property
|
||
|
def failed(self) -> bool:
|
||
|
"""Return whether a exception is being held in this future."""
|
||
|
return self.exception() is not None
|
||
|
|
||
|
@classmethod
|
||
|
def construct(cls, attempt_number: int, value: t.Any, has_exception: bool) -> "Future":
|
||
|
"""Construct a new Future object."""
|
||
|
fut = cls(attempt_number)
|
||
|
if has_exception:
|
||
|
fut.set_exception(value)
|
||
|
else:
|
||
|
fut.set_result(value)
|
||
|
return fut
|
||
|
|
||
|
|
||
|
class RetryCallState:
|
||
|
"""State related to a single call wrapped with Retrying."""
|
||
|
|
||
|
def __init__(
|
||
|
self,
|
||
|
retry_object: BaseRetrying,
|
||
|
fn: t.Optional[WrappedFn],
|
||
|
args: t.Any,
|
||
|
kwargs: t.Any,
|
||
|
) -> None:
|
||
|
#: Retry call start timestamp
|
||
|
self.start_time = time.monotonic()
|
||
|
#: Retry manager object
|
||
|
self.retry_object = retry_object
|
||
|
#: Function wrapped by this retry call
|
||
|
self.fn = fn
|
||
|
#: Arguments of the function wrapped by this retry call
|
||
|
self.args = args
|
||
|
#: Keyword arguments of the function wrapped by this retry call
|
||
|
self.kwargs = kwargs
|
||
|
|
||
|
#: The number of the current attempt
|
||
|
self.attempt_number: int = 1
|
||
|
#: Last outcome (result or exception) produced by the function
|
||
|
self.outcome: t.Optional[Future] = None
|
||
|
#: Timestamp of the last outcome
|
||
|
self.outcome_timestamp: t.Optional[float] = None
|
||
|
#: Time spent sleeping in retries
|
||
|
self.idle_for: float = 0.0
|
||
|
#: Next action as decided by the retry manager
|
||
|
self.next_action: t.Optional[RetryAction] = None
|
||
|
|
||
|
@property
|
||
|
def seconds_since_start(self) -> t.Optional[float]:
|
||
|
if self.outcome_timestamp is None:
|
||
|
return None
|
||
|
return self.outcome_timestamp - self.start_time
|
||
|
|
||
|
def prepare_for_next_attempt(self) -> None:
|
||
|
self.outcome = None
|
||
|
self.outcome_timestamp = None
|
||
|
self.attempt_number += 1
|
||
|
self.next_action = None
|
||
|
|
||
|
def set_result(self, val: t.Any) -> None:
|
||
|
ts = time.monotonic()
|
||
|
fut = Future(self.attempt_number)
|
||
|
fut.set_result(val)
|
||
|
self.outcome, self.outcome_timestamp = fut, ts
|
||
|
|
||
|
def set_exception(
|
||
|
self, exc_info: t.Tuple[t.Type[BaseException], BaseException, "types.TracebackType| None"]
|
||
|
) -> None:
|
||
|
ts = time.monotonic()
|
||
|
fut = Future(self.attempt_number)
|
||
|
fut.set_exception(exc_info[1])
|
||
|
self.outcome, self.outcome_timestamp = fut, ts
|
||
|
|
||
|
def __repr__(self) -> str:
|
||
|
if self.outcome is None:
|
||
|
result = "none yet"
|
||
|
elif self.outcome.failed:
|
||
|
exception = self.outcome.exception()
|
||
|
result = f"failed ({exception.__class__.__name__} {exception})"
|
||
|
else:
|
||
|
result = f"returned {self.outcome.result()}"
|
||
|
|
||
|
slept = float(round(self.idle_for, 2))
|
||
|
clsname = self.__class__.__name__
|
||
|
return f"<{clsname} {id(self)}: attempt #{self.attempt_number}; slept for {slept}; last result: {result}>"
|
||
|
|
||
|
|
||
|
@t.overload
|
||
|
def retry(func: WrappedFn) -> WrappedFn:
|
||
|
...
|
||
|
|
||
|
|
||
|
@t.overload
|
||
|
def retry(
|
||
|
sleep: t.Callable[[t.Union[int, float]], None] = sleep,
|
||
|
stop: "StopBaseT" = stop_never,
|
||
|
wait: "WaitBaseT" = wait_none(),
|
||
|
retry: "RetryBaseT" = retry_if_exception_type(),
|
||
|
before: t.Callable[["RetryCallState"], None] = before_nothing,
|
||
|
after: t.Callable[["RetryCallState"], None] = after_nothing,
|
||
|
before_sleep: t.Optional[t.Callable[["RetryCallState"], None]] = None,
|
||
|
reraise: bool = False,
|
||
|
retry_error_cls: t.Type["RetryError"] = RetryError,
|
||
|
retry_error_callback: t.Optional[t.Callable[["RetryCallState"], t.Any]] = None,
|
||
|
) -> t.Callable[[WrappedFn], WrappedFn]:
|
||
|
...
|
||
|
|
||
|
|
||
|
def retry(*dargs: t.Any, **dkw: t.Any) -> t.Any:
|
||
|
"""Wrap a function with a new `Retrying` object.
|
||
|
|
||
|
:param dargs: positional arguments passed to Retrying object
|
||
|
:param dkw: keyword arguments passed to the Retrying object
|
||
|
"""
|
||
|
# support both @retry and @retry() as valid syntax
|
||
|
if len(dargs) == 1 and callable(dargs[0]):
|
||
|
return retry()(dargs[0])
|
||
|
else:
|
||
|
|
||
|
def wrap(f: WrappedFn) -> WrappedFn:
|
||
|
if isinstance(f, retry_base):
|
||
|
warnings.warn(
|
||
|
f"Got retry_base instance ({f.__class__.__name__}) as callable argument, "
|
||
|
f"this will probably hang indefinitely (did you mean retry={f.__class__.__name__}(...)?)"
|
||
|
)
|
||
|
r: "BaseRetrying"
|
||
|
if iscoroutinefunction(f):
|
||
|
r = AsyncRetrying(*dargs, **dkw)
|
||
|
elif tornado and hasattr(tornado.gen, "is_coroutine_function") and tornado.gen.is_coroutine_function(f):
|
||
|
r = TornadoRetrying(*dargs, **dkw)
|
||
|
else:
|
||
|
r = Retrying(*dargs, **dkw)
|
||
|
|
||
|
return r.wraps(f)
|
||
|
|
||
|
return wrap
|
||
|
|
||
|
|
||
|
from pip._vendor.tenacity._asyncio import AsyncRetrying # noqa:E402,I100
|
||
|
|
||
|
if tornado:
|
||
|
from pip._vendor.tenacity.tornadoweb import TornadoRetrying
|
||
|
|
||
|
|
||
|
__all__ = [
|
||
|
"retry_base",
|
||
|
"retry_all",
|
||
|
"retry_always",
|
||
|
"retry_any",
|
||
|
"retry_if_exception",
|
||
|
"retry_if_exception_type",
|
||
|
"retry_if_exception_cause_type",
|
||
|
"retry_if_not_exception_type",
|
||
|
"retry_if_not_result",
|
||
|
"retry_if_result",
|
||
|
"retry_never",
|
||
|
"retry_unless_exception_type",
|
||
|
"retry_if_exception_message",
|
||
|
"retry_if_not_exception_message",
|
||
|
"sleep",
|
||
|
"sleep_using_event",
|
||
|
"stop_after_attempt",
|
||
|
"stop_after_delay",
|
||
|
"stop_all",
|
||
|
"stop_any",
|
||
|
"stop_never",
|
||
|
"stop_when_event_set",
|
||
|
"wait_chain",
|
||
|
"wait_combine",
|
||
|
"wait_exponential",
|
||
|
"wait_fixed",
|
||
|
"wait_incrementing",
|
||
|
"wait_none",
|
||
|
"wait_random",
|
||
|
"wait_random_exponential",
|
||
|
"wait_full_jitter",
|
||
|
"wait_exponential_jitter",
|
||
|
"before_log",
|
||
|
"before_nothing",
|
||
|
"after_log",
|
||
|
"after_nothing",
|
||
|
"before_sleep_log",
|
||
|
"before_sleep_nothing",
|
||
|
"retry",
|
||
|
"WrappedFn",
|
||
|
"TryAgain",
|
||
|
"NO_RESULT",
|
||
|
"DoAttempt",
|
||
|
"DoSleep",
|
||
|
"BaseAction",
|
||
|
"RetryAction",
|
||
|
"RetryError",
|
||
|
"AttemptManager",
|
||
|
"BaseRetrying",
|
||
|
"Retrying",
|
||
|
"Future",
|
||
|
"RetryCallState",
|
||
|
"AsyncRetrying",
|
||
|
]
|