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OpenStack Study: test_multiprocessing.py**** CubicPower OpenStack Study ****
# Copyright 2012 OpenStack Foundation # 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. import time import httplib2 import psutil from glance.tests import functional from glance.tests.utils import execute
**** CubicPower OpenStack Study **** class TestMultiprocessing(functional.FunctionalTest): """Functional tests for the bin/glance CLI tool"""
**** CubicPower OpenStack Study **** def setUp(self): self.workers = 2 super(TestMultiprocessing, self).setUp()
**** CubicPower OpenStack Study **** def test_multiprocessing(self): """Spin up the api servers with multiprocessing on""" self.cleanup() self.start_servers(**self.__dict__.copy()) path = "http://%s:%d/v1/images" % ("127.0.0.1", self.api_port) http = httplib2.Http() response, content = http.request(path, 'GET') self.assertEqual(response.status, 200) self.assertEqual(content, '{"images": []}') self.stop_servers()
**** CubicPower OpenStack Study **** def _get_children(self): api_pid = self.api_server.process_pid process = psutil.Process(api_pid) children = process.get_children() pids = [str(child.pid) for child in children] return pids
**** CubicPower OpenStack Study **** def test_interrupt_avoids_respawn_storm(self): """ Ensure an interrupt signal does not cause a respawn storm. See bug #978130 """ self.cleanup() self.start_servers(**self.__dict__.copy()) children = self._get_children() cmd = "kill -INT %s" % ' '.join(children) execute(cmd, raise_error=True) for _ in range(9): # Yeah. This totally isn't a race condition. Randomly fails # set at 0.05. Works most of the time at 0.10 time.sleep(0.10) # ensure number of children hasn't grown self.assertTrue(len(children) >= len(self._get_children())) for child in self._get_children(): # ensure no new children spawned self.assertTrue(child in children, child) self.stop_servers()
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