/usr/share/pyshared/glance/tests/functional/test_multiprocessing.py is in python-glance 2012.1.3+stable~20120821-120fcf-0ubuntu1.5.
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# Copyright 2012 OpenStack, LLC
# 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
from glance.tests import functional
from glance.tests.utils import execute
class TestMultiprocessing(functional.FunctionalTest):
"""Functional tests for the bin/glance CLI tool"""
def setUp(self):
self.workers = 2
super(TestMultiprocessing, self).setUp()
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" % ("0.0.0.0", self.api_port)
http = httplib2.Http()
response, content = http.request(path, 'GET')
self.assertEqual(response.status, 200)
self.assertEqual(content, '{"images": []}')
self.stop_servers()
def _get_children(self):
cmd = ("ps -fu $USER | grep glance-api | "
"grep -v grep | awk '{print $2}' | sort -nr")
_, out, _ = execute(cmd, raise_error=True)
return out.split('\n')[0:-2]
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(0, 9):
time.sleep(0.05)
# 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)
self.stop_servers()
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