ae9c701f90
This adds a executor backed job dispatching base class and has the existing blocking executor use it by running jobs and dispatching jobs into a sync executor. It also allows for dispatching jobs into a thread executor, or other executor via a new '_executor_factory' method that can generate executors (it can be overriden in the non-blocking executor to provide your own executors instances). This does alter the behavior in that now that jobs are dispatched into an executor we no longer can immediatly know if a job was dispatched and raised an exception or whether it will raise an exception in the future, so we now alter the 'local_dispatched' to just be a boolean that is used to determine if any dispatches happened (failure or not). Change-Id: I485770e8f4c85d3833892a453c9fb5168d8f0407
51 lines
1.5 KiB
Python
51 lines
1.5 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2014 Yahoo! Inc. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import threading
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from debtcollector import moves
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from oslo_utils import timeutils
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# TODO(harlowja): Keep alias class... around until 2.0 is released.
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StopWatch = moves.moved_class(timeutils.StopWatch, 'StopWatch', __name__,
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version="1.15", removal_version="2.0")
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class Timeout(object):
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"""An object which represents a timeout.
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This object has the ability to be interrupted before the actual timeout
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is reached.
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"""
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def __init__(self, timeout, event_factory=threading.Event):
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if timeout < 0:
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raise ValueError("Timeout must be >= 0 and not %s" % (timeout))
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self._timeout = timeout
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self._event = event_factory()
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def interrupt(self):
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self._event.set()
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def is_stopped(self):
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return self._event.is_set()
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def wait(self):
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self._event.wait(self._timeout)
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def reset(self):
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self._event.clear()
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