# Copyright 2016 Étienne Bersac # 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 time import typing if typing.TYPE_CHECKING: import threading def sleep(seconds: float) -> None: """ Sleep strategy that delays execution for a given number of seconds. This is the default strategy, and may be mocked out for unit testing. """ time.sleep(seconds) class sleep_using_event: """Sleep strategy that waits on an event to be set.""" def __init__(self, event: "threading.Event") -> None: self.event = event def __call__(self, timeout: typing.Optional[float]) -> None: # NOTE(harlowja): this may *not* actually wait for timeout # seconds if the event is set (ie this may eject out early). self.event.wait(timeout=timeout)