diff options
Diffstat (limited to 'src/pip/_vendor/tenacity/__init__.py')
| -rw-r--r-- | src/pip/_vendor/tenacity/__init__.py | 219 |
1 files changed, 154 insertions, 65 deletions
diff --git a/src/pip/_vendor/tenacity/__init__.py b/src/pip/_vendor/tenacity/__init__.py index ab3be3bf6..4f1603ade 100644 --- a/src/pip/_vendor/tenacity/__init__.py +++ b/src/pip/_vendor/tenacity/__init__.py @@ -16,6 +16,7 @@ # See the License for the specific language governing permissions and # limitations under the License. + import functools import sys import threading @@ -88,51 +89,13 @@ tornado = None # type: ignore if t.TYPE_CHECKING: import types - from .wait import wait_base - from .stop import stop_base - - -WrappedFn = t.TypeVar("WrappedFn", bound=t.Callable) -_RetValT = t.TypeVar("_RetValT") - - -@t.overload -def retry(fn: WrappedFn) -> WrappedFn: - pass - - -@t.overload -def retry(*dargs: t.Any, **dkw: t.Any) -> t.Callable[[WrappedFn], WrappedFn]: # noqa - pass - - -def retry(*dargs: t.Any, **dkw: t.Any) -> t.Union[WrappedFn, t.Callable[[WrappedFn], WrappedFn]]: # noqa - """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__}(...)?)" - ) - if iscoroutinefunction(f): - r: "BaseRetrying" = 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) + from .retry import RetryBaseT + from .stop import StopBaseT + from .wait import WaitBaseT - return r.wraps(f) - return wrap +WrappedFnReturnT = t.TypeVar("WrappedFnReturnT") +WrappedFn = t.TypeVar("WrappedFn", bound=t.Callable[..., t.Any]) class TryAgain(Exception): @@ -216,7 +179,7 @@ class AttemptManager: exc_value: t.Optional[BaseException], traceback: t.Optional["types.TracebackType"], ) -> t.Optional[bool]: - if isinstance(exc_value, BaseException): + 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: @@ -229,9 +192,9 @@ class BaseRetrying(ABC): def __init__( self, sleep: t.Callable[[t.Union[int, float]], None] = sleep, - stop: "stop_base" = stop_never, - wait: "wait_base" = wait_none(), - retry: retry_base = retry_if_exception_type(), + 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, @@ -254,8 +217,8 @@ class BaseRetrying(ABC): def copy( self, sleep: t.Union[t.Callable[[t.Union[int, float]], None], object] = _unset, - stop: t.Union["stop_base", object] = _unset, - wait: t.Union["wait_base", 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, @@ -312,9 +275,9 @@ class BaseRetrying(ABC): statistics from each thread). """ try: - return self._local.statistics + return self._local.statistics # type: ignore[no-any-return] except AttributeError: - self._local.statistics = {} + self._local.statistics = t.cast(t.Dict[str, t.Any], {}) return self._local.statistics def wraps(self, f: WrappedFn) -> WrappedFn: @@ -330,10 +293,10 @@ class BaseRetrying(ABC): def retry_with(*args: t.Any, **kwargs: t.Any) -> WrappedFn: return self.copy(*args, **kwargs).wraps(f) - wrapped_f.retry = self - wrapped_f.retry_with = retry_with + wrapped_f.retry = self # type: ignore[attr-defined] + wrapped_f.retry_with = retry_with # type: ignore[attr-defined] - return wrapped_f + return wrapped_f # type: ignore[return-value] def begin(self) -> None: self.statistics.clear() @@ -348,15 +311,15 @@ class BaseRetrying(ABC): self.before(retry_state) return DoAttempt() - is_explicit_retry = retry_state.outcome.failed and isinstance(retry_state.outcome.exception(), TryAgain) - if not (is_explicit_retry or self.retry(retry_state=retry_state)): + 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=retry_state): + if self.stop(retry_state): if self.retry_error_callback: return self.retry_error_callback(retry_state) retry_exc = self.retry_error_cls(fut) @@ -365,7 +328,7 @@ class BaseRetrying(ABC): raise retry_exc from fut.exception() if self.wait: - sleep = self.wait(retry_state=retry_state) + sleep = self.wait(retry_state) else: sleep = 0.0 retry_state.next_action = RetryAction(sleep) @@ -393,14 +356,24 @@ class BaseRetrying(ABC): break @abstractmethod - def __call__(self, fn: t.Callable[..., _RetValT], *args: t.Any, **kwargs: t.Any) -> _RetValT: + 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[..., _RetValT], *args: t.Any, **kwargs: t.Any) -> _RetValT: + 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) @@ -410,17 +383,23 @@ class Retrying(BaseRetrying): try: result = fn(*args, **kwargs) except BaseException: # noqa: B902 - retry_state.set_exception(sys.exc_info()) + 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 + return do # type: ignore[no-any-return] + + +if sys.version_info[1] >= 9: + FutureGenericT = futures.Future[t.Any] +else: + FutureGenericT = futures.Future -class Future(futures.Future): +class Future(FutureGenericT): """Encapsulates a (future or past) attempted call to a target function.""" def __init__(self, attempt_number: int) -> None: @@ -493,13 +472,15 @@ class RetryCallState: 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: + 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): + def __repr__(self) -> str: if self.outcome is None: result = "none yet" elif self.outcome.failed: @@ -513,7 +494,115 @@ class RetryCallState: 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", +] |