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# 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 typing

from pip._vendor.tenacity import _utils

if typing.TYPE_CHECKING:
    import logging

    from pip._vendor.tenacity import RetryCallState


def before_sleep_nothing(retry_state: "RetryCallState") -> None:
    """Before call strategy that does nothing."""


def before_sleep_log(
    logger: "logging.Logger",
    log_level: int,
    exc_info: bool = False,
) -> typing.Callable[["RetryCallState"], None]:
    """Before call strategy that logs to some logger the attempt."""

    def log_it(retry_state: "RetryCallState") -> None:
        local_exc_info: BaseException | bool | None

        if retry_state.outcome is None:
            raise RuntimeError("log_it() called before outcome was set")

        if retry_state.next_action is None:
            raise RuntimeError("log_it() called before next_action was set")

        if retry_state.outcome.failed:
            ex = retry_state.outcome.exception()
            verb, value = "raised", f"{ex.__class__.__name__}: {ex}"

            if exc_info:
                local_exc_info = retry_state.outcome.exception()
            else:
                local_exc_info = False
        else:
            verb, value = "returned", retry_state.outcome.result()
            local_exc_info = False  # exc_info does not apply when no exception

        if retry_state.fn is None:
            # NOTE(sileht): can't really happen, but we must please mypy
            fn_name = "<unknown>"
        else:
            fn_name = _utils.get_callback_name(retry_state.fn)

        logger.log(
            log_level,
            f"Retrying {fn_name} " f"in {retry_state.next_action.sleep} seconds as it {verb} {value}.",
            exc_info=local_exc_info,
        )

    return log_it
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