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| # Copyright 2016–2021 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 abc | |
| import typing | |
| from pip._vendor.tenacity import _utils | |
| if typing.TYPE_CHECKING: | |
| import threading | |
| from pip._vendor.tenacity import RetryCallState | |
| class stop_base(abc.ABC): | |
| """Abstract base class for stop strategies.""" | |
| def __call__(self, retry_state: "RetryCallState") -> bool: | |
| pass | |
| def __and__(self, other: "stop_base") -> "stop_all": | |
| return stop_all(self, other) | |
| def __or__(self, other: "stop_base") -> "stop_any": | |
| return stop_any(self, other) | |
| StopBaseT = typing.Union[stop_base, typing.Callable[["RetryCallState"], bool]] | |
| class stop_any(stop_base): | |
| """Stop if any of the stop condition is valid.""" | |
| def __init__(self, *stops: stop_base) -> None: | |
| self.stops = stops | |
| def __call__(self, retry_state: "RetryCallState") -> bool: | |
| return any(x(retry_state) for x in self.stops) | |
| class stop_all(stop_base): | |
| """Stop if all the stop conditions are valid.""" | |
| def __init__(self, *stops: stop_base) -> None: | |
| self.stops = stops | |
| def __call__(self, retry_state: "RetryCallState") -> bool: | |
| return all(x(retry_state) for x in self.stops) | |
| class _stop_never(stop_base): | |
| """Never stop.""" | |
| def __call__(self, retry_state: "RetryCallState") -> bool: | |
| return False | |
| stop_never = _stop_never() | |
| class stop_when_event_set(stop_base): | |
| """Stop when the given event is set.""" | |
| def __init__(self, event: "threading.Event") -> None: | |
| self.event = event | |
| def __call__(self, retry_state: "RetryCallState") -> bool: | |
| return self.event.is_set() | |
| class stop_after_attempt(stop_base): | |
| """Stop when the previous attempt >= max_attempt.""" | |
| def __init__(self, max_attempt_number: int) -> None: | |
| self.max_attempt_number = max_attempt_number | |
| def __call__(self, retry_state: "RetryCallState") -> bool: | |
| return retry_state.attempt_number >= self.max_attempt_number | |
| class stop_after_delay(stop_base): | |
| """Stop when the time from the first attempt >= limit.""" | |
| def __init__(self, max_delay: _utils.time_unit_type) -> None: | |
| self.max_delay = _utils.to_seconds(max_delay) | |
| def __call__(self, retry_state: "RetryCallState") -> bool: | |
| if retry_state.seconds_since_start is None: | |
| raise RuntimeError("__call__() called but seconds_since_start is not set") | |
| return retry_state.seconds_since_start >= self.max_delay | |