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# Copyright (c) 2010-2012 OpenStack Foundation
#
# 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 unittest
from ConfigParser import NoSectionError, NoOptionError
from swift.common.middleware import memcache
from swift.common.memcached import MemcacheRing
from swift.common.swob import Request
class FakeApp(object):
def __call__(self, env, start_response):
return env
class ExcConfigParser(object):
def read(self, path):
raise Exception('read called with %r' % path)
class EmptyConfigParser(object):
def read(self, path):
return False
def get_config_parser(memcache_servers='1.2.3.4:5',
memcache_serialization_support='1',
memcache_max_connections='4',
section='memcache'):
_srvs = memcache_servers
_sers = memcache_serialization_support
_maxc = memcache_max_connections
_section = section
class SetConfigParser(object):
def read(self, path):
return True
def get(self, section, option):
if _section == section:
if option == 'memcache_servers':
if _srvs == 'error':
raise NoOptionError(option, section)
return _srvs
elif option == 'memcache_serialization_support':
if _sers == 'error':
raise NoOptionError(option, section)
return _sers
elif option in ('memcache_max_connections',
'max_connections'):
if _maxc == 'error':
raise NoOptionError(option, section)
return _maxc
else:
raise NoOptionError(option, section)
else:
raise NoSectionError(option)
return SetConfigParser
def start_response(*args):
pass
class TestCacheMiddleware(unittest.TestCase):
def setUp(self):
self.app = memcache.MemcacheMiddleware(FakeApp(), {})
def test_cache_middleware(self):
req = Request.blank('/something', environ={'REQUEST_METHOD': 'GET'})
resp = self.app(req.environ, start_response)
self.assertTrue('swift.cache' in resp)
self.assertTrue(isinstance(resp['swift.cache'], MemcacheRing))
def test_conf_default_read(self):
orig_parser = memcache.ConfigParser
memcache.ConfigParser = ExcConfigParser
count = 0
try:
for d in ({},
{'memcache_servers': '6.7.8.9:10'},
{'memcache_serialization_support': '0'},
{'memcache_max_connections': '30'},
{'memcache_servers': '6.7.8.9:10',
'memcache_serialization_support': '0'},
{'memcache_servers': '6.7.8.9:10',
'memcache_max_connections': '30'},
{'memcache_serialization_support': '0',
'memcache_max_connections': '30'}
):
try:
memcache.MemcacheMiddleware(FakeApp(), d)
except Exception as err:
self.assertEquals(
str(err),
"read called with '/etc/swift/memcache.conf'")
count += 1
finally:
memcache.ConfigParser = orig_parser
self.assertEquals(count, 7)
def test_conf_set_no_read(self):
orig_parser = memcache.ConfigParser
memcache.ConfigParser = ExcConfigParser
exc = None
try:
memcache.MemcacheMiddleware(
FakeApp(), {'memcache_servers': '1.2.3.4:5',
'memcache_serialization_support': '2',
'memcache_max_connections': '30'})
except Exception as err:
exc = err
finally:
memcache.ConfigParser = orig_parser
self.assertEquals(exc, None)
def test_conf_default(self):
orig_parser = memcache.ConfigParser
memcache.ConfigParser = EmptyConfigParser
try:
app = memcache.MemcacheMiddleware(FakeApp(), {})
finally:
memcache.ConfigParser = orig_parser
self.assertEquals(app.memcache_servers, '127.0.0.1:11211')
self.assertEquals(app.memcache._allow_pickle, False)
self.assertEquals(app.memcache._allow_unpickle, False)
self.assertEquals(
app.memcache._client_cache['127.0.0.1:11211'].max_size, 2)
def test_conf_inline(self):
orig_parser = memcache.ConfigParser
memcache.ConfigParser = get_config_parser()
try:
app = memcache.MemcacheMiddleware(
FakeApp(),
{'memcache_servers': '6.7.8.9:10',
'memcache_serialization_support': '0',
'memcache_max_connections': '5'})
finally:
memcache.ConfigParser = orig_parser
self.assertEquals(app.memcache_servers, '6.7.8.9:10')
self.assertEquals(app.memcache._allow_pickle, True)
self.assertEquals(app.memcache._allow_unpickle, True)
self.assertEquals(
app.memcache._client_cache['6.7.8.9:10'].max_size, 5)
def test_conf_extra_no_section(self):
orig_parser = memcache.ConfigParser
memcache.ConfigParser = get_config_parser(section='foobar')
try:
app = memcache.MemcacheMiddleware(FakeApp(), {})
finally:
memcache.ConfigParser = orig_parser
self.assertEquals(app.memcache_servers, '127.0.0.1:11211')
self.assertEquals(app.memcache._allow_pickle, False)
self.assertEquals(app.memcache._allow_unpickle, False)
self.assertEquals(
app.memcache._client_cache['127.0.0.1:11211'].max_size, 2)
def test_conf_extra_no_option(self):
orig_parser = memcache.ConfigParser
memcache.ConfigParser = get_config_parser(
memcache_servers='error', memcache_serialization_support='error',
memcache_max_connections='error')
try:
app = memcache.MemcacheMiddleware(FakeApp(), {})
finally:
memcache.ConfigParser = orig_parser
self.assertEquals(app.memcache_servers, '127.0.0.1:11211')
self.assertEquals(app.memcache._allow_pickle, False)
self.assertEquals(app.memcache._allow_unpickle, False)
self.assertEquals(
app.memcache._client_cache['127.0.0.1:11211'].max_size, 2)
def test_conf_inline_other_max_conn(self):
orig_parser = memcache.ConfigParser
memcache.ConfigParser = get_config_parser()
try:
app = memcache.MemcacheMiddleware(
FakeApp(),
{'memcache_servers': '6.7.8.9:10',
'memcache_serialization_support': '0',
'max_connections': '5'})
finally:
memcache.ConfigParser = orig_parser
self.assertEquals(app.memcache_servers, '6.7.8.9:10')
self.assertEquals(app.memcache._allow_pickle, True)
self.assertEquals(app.memcache._allow_unpickle, True)
self.assertEquals(
app.memcache._client_cache['6.7.8.9:10'].max_size, 5)
def test_conf_inline_bad_max_conn(self):
orig_parser = memcache.ConfigParser
memcache.ConfigParser = get_config_parser()
try:
app = memcache.MemcacheMiddleware(
FakeApp(),
{'memcache_servers': '6.7.8.9:10',
'memcache_serialization_support': '0',
'max_connections': 'bad42'})
finally:
memcache.ConfigParser = orig_parser
self.assertEquals(app.memcache_servers, '6.7.8.9:10')
self.assertEquals(app.memcache._allow_pickle, True)
self.assertEquals(app.memcache._allow_unpickle, True)
self.assertEquals(
app.memcache._client_cache['6.7.8.9:10'].max_size, 4)
def test_conf_from_extra_conf(self):
orig_parser = memcache.ConfigParser
memcache.ConfigParser = get_config_parser()
try:
app = memcache.MemcacheMiddleware(FakeApp(), {})
finally:
memcache.ConfigParser = orig_parser
self.assertEquals(app.memcache_servers, '1.2.3.4:5')
self.assertEquals(app.memcache._allow_pickle, False)
self.assertEquals(app.memcache._allow_unpickle, True)
self.assertEquals(
app.memcache._client_cache['1.2.3.4:5'].max_size, 4)
def test_conf_from_extra_conf_bad_max_conn(self):
orig_parser = memcache.ConfigParser
memcache.ConfigParser = get_config_parser(
memcache_max_connections='bad42')
try:
app = memcache.MemcacheMiddleware(FakeApp(), {})
finally:
memcache.ConfigParser = orig_parser
self.assertEquals(app.memcache_servers, '1.2.3.4:5')
self.assertEquals(app.memcache._allow_pickle, False)
self.assertEquals(app.memcache._allow_unpickle, True)
self.assertEquals(
app.memcache._client_cache['1.2.3.4:5'].max_size, 2)
def test_conf_from_inline_and_maxc_from_extra_conf(self):
orig_parser = memcache.ConfigParser
memcache.ConfigParser = get_config_parser()
try:
app = memcache.MemcacheMiddleware(
FakeApp(),
{'memcache_servers': '6.7.8.9:10',
'memcache_serialization_support': '0'})
finally:
memcache.ConfigParser = orig_parser
self.assertEquals(app.memcache_servers, '6.7.8.9:10')
self.assertEquals(app.memcache._allow_pickle, True)
self.assertEquals(app.memcache._allow_unpickle, True)
self.assertEquals(
app.memcache._client_cache['6.7.8.9:10'].max_size, 4)
def test_conf_from_inline_and_sers_from_extra_conf(self):
orig_parser = memcache.ConfigParser
memcache.ConfigParser = get_config_parser()
try:
app = memcache.MemcacheMiddleware(
FakeApp(),
{'memcache_servers': '6.7.8.9:10',
'memcache_max_connections': '42'})
finally:
memcache.ConfigParser = orig_parser
self.assertEquals(app.memcache_servers, '6.7.8.9:10')
self.assertEquals(app.memcache._allow_pickle, False)
self.assertEquals(app.memcache._allow_unpickle, True)
self.assertEquals(
app.memcache._client_cache['6.7.8.9:10'].max_size, 42)
def test_filter_factory(self):
factory = memcache.filter_factory({'max_connections': '3'},
memcache_servers='10.10.10.10:10',
memcache_serialization_support='1')
thefilter = factory('myapp')
self.assertEquals(thefilter.app, 'myapp')
self.assertEquals(thefilter.memcache_servers, '10.10.10.10:10')
self.assertEquals(thefilter.memcache._allow_pickle, False)
self.assertEquals(thefilter.memcache._allow_unpickle, True)
self.assertEquals(
thefilter.memcache._client_cache['10.10.10.10:10'].max_size, 3)
if __name__ == '__main__':
unittest.main()
|
