6dfeeb7359
There are some issues with bundle of eventlet, taskflow and apscheduler on Python 3.7. According to [0], replace ThreadPoolExecutor with GreenThreadPoolExecutor [0]: http://lists.openstack.org/pipermail/openstack-dev/2018-July/132481.html Co-Authored-By: Canwei Li <li.canwei2@zte.com.cn> Change-Id: I989d7155eb8764088f91b3ca0d1f47ac6332bf11
72 lines
2.1 KiB
Python
72 lines
2.1 KiB
Python
# -*- encoding: utf-8 -*-
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# Copyright (c) 2016 b<>com
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#
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# Authors: Vincent FRANCOISE <vincent.francoise@b-com.com>
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from apscheduler import events
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from apscheduler.executors.pool import BasePoolExecutor
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from apscheduler.schedulers import background
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import futurist
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from oslo_service import service
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job_events = events
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class GreenThreadPoolExecutor(BasePoolExecutor):
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"""Green thread pool
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An executor that runs jobs in a green thread pool.
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Plugin alias: ``threadpool``
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:param max_workers: the maximum number of spawned threads.
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"""
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def __init__(self, max_workers=10):
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pool = futurist.GreenThreadPoolExecutor(int(max_workers))
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super(GreenThreadPoolExecutor, self).__init__(pool)
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executors = {
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'default': GreenThreadPoolExecutor(),
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}
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class BackgroundSchedulerService(service.ServiceBase,
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background.BackgroundScheduler):
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def __init__(self, gconfig={}, **options):
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if options is None:
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options = {'executors': executors}
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else:
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if 'executors' not in options.keys():
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options['executors'] = executors
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super(BackgroundSchedulerService, self).__init__(
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gconfig, **options)
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def start(self):
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"""Start service."""
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background.BackgroundScheduler.start(self)
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def stop(self):
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"""Stop service."""
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self.shutdown()
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def wait(self):
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"""Wait for service to complete."""
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def reset(self):
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"""Reset service.
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Called in case service running in daemon mode receives SIGHUP.
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"""
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