48 lines
1.7 KiB
Python
48 lines
1.7 KiB
Python
# Copyright 2013 Red Hat, Inc.
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# Copyright 2013 New Dream Network, LLC (DreamHost)
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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 logging
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from eventlet.green import threading as greenthreading
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import futurist
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from oslo_messaging._executors import impl_pooledexecutor
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from oslo_utils import eventletutils
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LOG = logging.getLogger(__name__)
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class EventletExecutor(impl_pooledexecutor.PooledExecutor):
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"""A message executor which integrates with eventlet.
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This is an executor which polls for incoming messages from a greenthread
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and dispatches each message in its own greenthread powered async
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executor.
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The stop() method kills the message polling greenthread and the wait()
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method waits for all executor maintained greenthreads to complete.
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"""
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def __init__(self, conf, listener, dispatcher):
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super(EventletExecutor, self).__init__(conf, listener, dispatcher)
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eventletutils.warn_eventlet_not_patched(
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expected_patched_modules=['thread'],
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what="the 'oslo.messaging eventlet executor'")
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_executor_cls = futurist.GreenThreadPoolExecutor
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_lock_cls = greenthreading.Lock
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_event_cls = greenthreading.Event
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_thread_cls = greenthreading.Thread
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