oslo.messaging/openstack/common/messaging/_executors/impl_eventlet.py

53 lines
1.5 KiB
Python

# Copyright 2013 Red Hat, Inc.
# Copyright 2013 New Dream Network, LLC (DreamHost)
#
# 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 eventlet
import greenlet
from openstack.common.messaging._executor import base
class EventletExecutor(base.ExecutorBase):
def __init__(self, conf, listener, callback):
super(EventletExecutor, self).__init__(conf, listener, callback)
self._thread = None
def start(self):
if self._thread is not None:
return
def _executor_thread():
try:
while True:
except greenlet.GreenletExit:
return
self._thread = eventlet.spawn(_executor_thread)
def stop(self):
if self._thread is None:
return
self._thread.kill()
def wait(self):
if self._thread is None:
return
try:
self._thread.wait()
except greenlet.GreenletExit:
pass
self._thread = None