OpenStack Networking (Neutron)
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# Copyright 2015 Mirantis Inc.
# All Rights Reserved.
#
# 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 unittest import mock
from neutron_lib.callbacks import events
from neutron_lib.callbacks import registry
from neutron_lib.callbacks import resources
from oslo_concurrency import processutils
from oslo_config import cfg
from neutron import service
from neutron.tests import base
from neutron.tests.unit import test_wsgi
class TestServiceHelpers(base.BaseTestCase):
def test_get_workers(self):
num_workers = service._get_worker_count()
self.assertGreaterEqual(num_workers, 1)
self.assertLessEqual(num_workers, processutils.get_worker_count())
class TestRpcWorker(test_wsgi.TestServiceBase):
def test_reset(self):
_plugin = mock.Mock()
rpc_worker = service.RpcWorker(_plugin)
self._test_reset(rpc_worker)
class TestRunRpcWorkers(base.BaseTestCase):
def setUp(self):
super(TestRunRpcWorkers, self).setUp()
self.worker_count = service._get_worker_count()
def _test_rpc_workers(self, config_value, expected_passed_value):
if config_value is not None:
cfg.CONF.set_override('rpc_workers', config_value)
with mock.patch('neutron.service.RpcWorker') as mock_rpc_worker:
with mock.patch('neutron.service.RpcReportsWorker'):
service._get_rpc_workers(plugin=mock.Mock())
init_call = mock_rpc_worker.call_args
expected_call = mock.call(
mock.ANY, worker_process_count=expected_passed_value)
self.assertEqual(expected_call, init_call)
def test_rpc_workers_zero(self):
self._test_rpc_workers(0, 1)
def test_rpc_workers_default_api_workers_default(self):
workers = max(int(self.worker_count / 2), 1)
self._test_rpc_workers(None, workers)
def test_rpc_workers_default_api_workers_set(self):
cfg.CONF.set_override('api_workers', 18)
self._test_rpc_workers(None, 9)
def test_rpc_workers_defined(self):
self._test_rpc_workers(42, 42)
class TestRunWsgiApp(base.BaseTestCase):
def setUp(self):
super(TestRunWsgiApp, self).setUp()
self.worker_count = service._get_worker_count()
def _test_api_workers(self, config_value, expected_passed_value):
if config_value is not None:
cfg.CONF.set_override('api_workers', config_value)
with mock.patch('neutron.wsgi.Server') as mock_server:
service.run_wsgi_app(mock.sentinel.app)
start_call = mock_server.return_value.start.call_args
expected_call = mock.call(
mock.ANY, mock.ANY, mock.ANY, desc='api worker',
workers=expected_passed_value)
self.assertEqual(expected_call, start_call)
def test_api_workers_zero(self):
self._test_api_workers(0, 0)
def test_api_workers_default(self):
self._test_api_workers(None, self.worker_count)
def test_api_workers_defined(self):
self._test_api_workers(42, 42)
def test_start_all_workers(self):
cfg.CONF.set_override('api_workers', 0)
mock.patch.object(service, '_get_rpc_workers').start()
mock.patch.object(service, '_get_plugins_workers').start()
mock.patch.object(service, '_start_workers').start()
callback = mock.Mock()
registry.subscribe(callback, resources.PROCESS, events.AFTER_SPAWN)
service.start_all_workers()
callback.assert_called_once_with(
resources.PROCESS, events.AFTER_SPAWN, mock.ANY, payload=None)