75 lines
2.5 KiB
Python
75 lines
2.5 KiB
Python
# Copyright 2015 Mirantis, Inc.
|
|
#
|
|
# 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.
|
|
|
|
from oslo_messaging._i18n import _
|
|
from oslo_utils import importutils
|
|
|
|
|
|
# Map zmq_concurrency config option names to the actual module name.
|
|
ZMQ_MODULES = {
|
|
'native': 'zmq',
|
|
'eventlet': 'eventlet.green.zmq',
|
|
}
|
|
|
|
|
|
def import_zmq(zmq_concurrency='eventlet'):
|
|
_raise_error_if_invalid_config_value(zmq_concurrency)
|
|
|
|
imported_zmq = importutils.try_import(ZMQ_MODULES[zmq_concurrency],
|
|
default=None)
|
|
|
|
return imported_zmq
|
|
|
|
|
|
def get_poller(zmq_concurrency='eventlet'):
|
|
_raise_error_if_invalid_config_value(zmq_concurrency)
|
|
|
|
if zmq_concurrency == 'eventlet' and _is_eventlet_zmq_available():
|
|
from oslo_messaging._drivers.zmq_driver.poller import green_poller
|
|
return green_poller.GreenPoller()
|
|
|
|
from oslo_messaging._drivers.zmq_driver.poller import threading_poller
|
|
return threading_poller.ThreadingPoller()
|
|
|
|
|
|
def get_executor(method, zmq_concurrency='eventlet'):
|
|
_raise_error_if_invalid_config_value(zmq_concurrency)
|
|
|
|
if zmq_concurrency == 'eventlet' and _is_eventlet_zmq_available():
|
|
from oslo_messaging._drivers.zmq_driver.poller import green_poller
|
|
return green_poller.GreenExecutor(method)
|
|
|
|
from oslo_messaging._drivers.zmq_driver.poller import threading_poller
|
|
return threading_poller.ThreadingExecutor(method)
|
|
|
|
|
|
def _is_eventlet_zmq_available():
|
|
return importutils.try_import('eventlet.green.zmq')
|
|
|
|
|
|
def _raise_error_if_invalid_config_value(zmq_concurrency):
|
|
if zmq_concurrency not in ZMQ_MODULES:
|
|
errmsg = _('Invalid zmq_concurrency value: %s')
|
|
raise ValueError(errmsg % zmq_concurrency)
|
|
|
|
|
|
def get_queue(zmq_concurrency='eventlet'):
|
|
_raise_error_if_invalid_config_value(zmq_concurrency)
|
|
if zmq_concurrency == 'eventlet' and _is_eventlet_zmq_available():
|
|
import eventlet
|
|
return eventlet.queue.Queue(), eventlet.queue.Empty
|
|
else:
|
|
import six
|
|
return six.moves.queue.Queue(), six.moves.queue.Empty
|