5517ccb63e
CacheIsolatingProxy was in the tests, but it should be available to applications since it's useful to use in their own tests when setting up the environment for caching. Change-Id: If88e8026494dffbf74674aa72964552943ef0d1d
313 lines
12 KiB
Python
313 lines
12 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2013 Metacloud
|
|
#
|
|
# 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 copy
|
|
import time
|
|
import uuid
|
|
|
|
from dogpile.cache import proxy
|
|
import mock
|
|
from oslo_config import cfg
|
|
from oslo_config import fixture as config_fixture
|
|
from oslotest import base
|
|
|
|
from oslo_cache import core as cache
|
|
from oslo_cache import exception
|
|
|
|
|
|
NO_VALUE = cache.NO_VALUE
|
|
TEST_GROUP = uuid.uuid4().hex
|
|
TEST_GROUP2 = uuid.uuid4().hex
|
|
|
|
|
|
class BaseTestCase(base.BaseTestCase):
|
|
def setUp(self):
|
|
super(BaseTestCase, self).setUp()
|
|
self.config_fixture = self.useFixture(config_fixture.Config())
|
|
self.config_fixture.config(
|
|
# TODO(morganfainberg): Make Cache Testing a separate test case
|
|
# in tempest, and move it out of the base unit tests.
|
|
group='cache',
|
|
backend='dogpile.cache.memory',
|
|
enabled=True,
|
|
proxies=['oslo_cache.testing.CacheIsolatingProxy'])
|
|
|
|
|
|
def _copy_value(value):
|
|
if value is not NO_VALUE:
|
|
value = copy.deepcopy(value)
|
|
return value
|
|
|
|
|
|
class TestProxy(proxy.ProxyBackend):
|
|
def get(self, key):
|
|
value = _copy_value(self.proxied.get(key))
|
|
if value is not NO_VALUE:
|
|
if isinstance(value[0], TestProxyValue):
|
|
value[0].cached = True
|
|
return value
|
|
|
|
|
|
class TestProxyValue(object):
|
|
def __init__(self, value):
|
|
self.value = value
|
|
self.cached = False
|
|
|
|
|
|
class CacheRegionTest(BaseTestCase):
|
|
|
|
def setUp(self):
|
|
super(CacheRegionTest, self).setUp()
|
|
self.region = cache.create_region()
|
|
cache.configure_cache_region(self.config_fixture.conf, self.region)
|
|
self.region.wrap(TestProxy)
|
|
self.test_value = TestProxyValue('Decorator Test')
|
|
|
|
def _add_test_caching_option(self):
|
|
self.config_fixture.register_opt(
|
|
cfg.BoolOpt('caching', default=True), group='cache')
|
|
|
|
def _add_dummy_config_group(self):
|
|
self.config_fixture.register_opt(
|
|
cfg.IntOpt('cache_time', default=None), group=TEST_GROUP)
|
|
self.config_fixture.register_opt(
|
|
cfg.IntOpt('cache_time', default=None), group=TEST_GROUP2)
|
|
|
|
def _get_cacheable_function(self):
|
|
memoize = cache.get_memoization_decorator(
|
|
self.config_fixture.conf, self.region, group='cache')
|
|
|
|
@memoize
|
|
def cacheable_function(value):
|
|
return value
|
|
|
|
return cacheable_function
|
|
|
|
def test_region_built_with_proxy_direct_cache_test(self):
|
|
# Verify cache regions are properly built with proxies.
|
|
test_value = TestProxyValue('Direct Cache Test')
|
|
self.region.set('cache_test', test_value)
|
|
cached_value = self.region.get('cache_test')
|
|
self.assertTrue(cached_value.cached)
|
|
|
|
def test_cache_region_no_error_multiple_config(self):
|
|
# Verify configuring the CacheRegion again doesn't error.
|
|
cache.configure_cache_region(self.config_fixture.conf, self.region)
|
|
cache.configure_cache_region(self.config_fixture.conf, self.region)
|
|
|
|
def _get_cache_fallthrough_fn(self, cache_time):
|
|
memoize = cache.get_memoization_decorator(
|
|
self.config_fixture.conf,
|
|
self.region,
|
|
group='cache',
|
|
expiration_group=TEST_GROUP2)
|
|
|
|
class _test_obj(object):
|
|
def __init__(self, value):
|
|
self.test_value = value
|
|
|
|
@memoize
|
|
def get_test_value(self):
|
|
return self.test_value
|
|
|
|
def _do_test(value):
|
|
|
|
test_obj = _test_obj(value)
|
|
|
|
# Ensure the value has been cached
|
|
test_obj.get_test_value()
|
|
# Get the now cached value
|
|
cached_value = test_obj.get_test_value()
|
|
self.assertTrue(cached_value.cached)
|
|
self.assertEqual(value.value, cached_value.value)
|
|
self.assertEqual(cached_value.value, test_obj.test_value.value)
|
|
# Change the underlying value on the test object.
|
|
test_obj.test_value = TestProxyValue(uuid.uuid4().hex)
|
|
self.assertEqual(cached_value.value,
|
|
test_obj.get_test_value().value)
|
|
# override the system time to ensure the non-cached new value
|
|
# is returned
|
|
new_time = time.time() + (cache_time * 2)
|
|
with mock.patch.object(time, 'time',
|
|
return_value=new_time):
|
|
overriden_cache_value = test_obj.get_test_value()
|
|
self.assertNotEqual(cached_value.value,
|
|
overriden_cache_value.value)
|
|
self.assertEqual(test_obj.test_value.value,
|
|
overriden_cache_value.value)
|
|
|
|
return _do_test
|
|
|
|
def test_cache_no_fallthrough_expiration_time_fn(self):
|
|
self._add_dummy_config_group()
|
|
# Since we do not re-configure the cache region, for ease of testing
|
|
# this value is set the same as the expiration_time default in the
|
|
# [cache] group
|
|
cache_time = 600
|
|
expiration_time = cache._get_expiration_time_fn(
|
|
self.config_fixture.conf, TEST_GROUP)
|
|
do_test = self._get_cache_fallthrough_fn(cache_time)
|
|
# Run the test with the dummy group cache_time value
|
|
self.config_fixture.config(cache_time=cache_time,
|
|
group=TEST_GROUP)
|
|
test_value = TestProxyValue(uuid.uuid4().hex)
|
|
self.assertEqual(cache_time, expiration_time())
|
|
do_test(value=test_value)
|
|
|
|
def test_cache_fallthrough_expiration_time_fn(self):
|
|
self._add_dummy_config_group()
|
|
# Since we do not re-configure the cache region, for ease of testing
|
|
# this value is set the same as the expiration_time default in the
|
|
# [cache] group
|
|
cache_time = 599
|
|
expiration_time = cache._get_expiration_time_fn(
|
|
self.config_fixture.conf, TEST_GROUP)
|
|
do_test = self._get_cache_fallthrough_fn(cache_time)
|
|
# Run the test with the dummy group cache_time value set to None and
|
|
# the global value set.
|
|
self.config_fixture.config(cache_time=None, group=TEST_GROUP)
|
|
test_value = TestProxyValue(uuid.uuid4().hex)
|
|
self.assertIsNone(expiration_time())
|
|
do_test(value=test_value)
|
|
|
|
def test_should_cache_fn_global_cache_enabled(self):
|
|
# Verify should_cache_fn generates a sane function for subsystem and
|
|
# functions as expected with caching globally enabled.
|
|
cacheable_function = self._get_cacheable_function()
|
|
|
|
self.config_fixture.config(group='cache', enabled=True)
|
|
cacheable_function(self.test_value)
|
|
cached_value = cacheable_function(self.test_value)
|
|
self.assertTrue(cached_value.cached)
|
|
|
|
def test_should_cache_fn_global_cache_disabled(self):
|
|
# Verify should_cache_fn generates a sane function for subsystem and
|
|
# functions as expected with caching globally disabled.
|
|
cacheable_function = self._get_cacheable_function()
|
|
|
|
self.config_fixture.config(group='cache', enabled=False)
|
|
cacheable_function(self.test_value)
|
|
cached_value = cacheable_function(self.test_value)
|
|
self.assertFalse(cached_value.cached)
|
|
|
|
def test_should_cache_fn_global_cache_disabled_group_cache_enabled(self):
|
|
# Verify should_cache_fn generates a sane function for subsystem and
|
|
# functions as expected with caching globally disabled and the specific
|
|
# group caching enabled.
|
|
cacheable_function = self._get_cacheable_function()
|
|
|
|
self._add_test_caching_option()
|
|
self.config_fixture.config(group='cache', enabled=False)
|
|
self.config_fixture.config(group='cache', caching=True)
|
|
|
|
cacheable_function(self.test_value)
|
|
cached_value = cacheable_function(self.test_value)
|
|
self.assertFalse(cached_value.cached)
|
|
|
|
def test_should_cache_fn_global_cache_enabled_group_cache_disabled(self):
|
|
# Verify should_cache_fn generates a sane function for subsystem and
|
|
# functions as expected with caching globally enabled and the specific
|
|
# group caching disabled.
|
|
cacheable_function = self._get_cacheable_function()
|
|
|
|
self._add_test_caching_option()
|
|
self.config_fixture.config(group='cache', enabled=True)
|
|
self.config_fixture.config(group='cache', caching=False)
|
|
|
|
cacheable_function(self.test_value)
|
|
cached_value = cacheable_function(self.test_value)
|
|
self.assertFalse(cached_value.cached)
|
|
|
|
def test_should_cache_fn_global_cache_enabled_group_cache_enabled(self):
|
|
# Verify should_cache_fn generates a sane function for subsystem and
|
|
# functions as expected with caching globally enabled and the specific
|
|
# group caching enabled.
|
|
cacheable_function = self._get_cacheable_function()
|
|
|
|
self._add_test_caching_option()
|
|
self.config_fixture.config(group='cache', enabled=True)
|
|
self.config_fixture.config(group='cache', caching=True)
|
|
|
|
cacheable_function(self.test_value)
|
|
cached_value = cacheable_function(self.test_value)
|
|
self.assertTrue(cached_value.cached)
|
|
|
|
def test_cache_dictionary_config_builder(self):
|
|
"""Validate we build a sane dogpile.cache dictionary config."""
|
|
self.config_fixture.config(group='cache',
|
|
config_prefix='test_prefix',
|
|
backend='some_test_backend',
|
|
expiration_time=86400,
|
|
backend_argument=['arg1:test',
|
|
'arg2:test:test',
|
|
'arg3.invalid'])
|
|
|
|
config_dict = cache._build_cache_config(self.config_fixture.conf)
|
|
self.assertEqual(
|
|
self.config_fixture.conf.cache.backend,
|
|
config_dict['test_prefix.backend'])
|
|
self.assertEqual(
|
|
self.config_fixture.conf.cache.expiration_time,
|
|
config_dict['test_prefix.expiration_time'])
|
|
self.assertEqual('test', config_dict['test_prefix.arguments.arg1'])
|
|
self.assertEqual('test:test',
|
|
config_dict['test_prefix.arguments.arg2'])
|
|
self.assertNotIn('test_prefix.arguments.arg3', config_dict)
|
|
|
|
def test_cache_debug_proxy(self):
|
|
single_value = 'Test Value'
|
|
single_key = 'testkey'
|
|
multi_values = {'key1': 1, 'key2': 2, 'key3': 3}
|
|
|
|
self.region.set(single_key, single_value)
|
|
self.assertEqual(single_value, self.region.get(single_key))
|
|
|
|
self.region.delete(single_key)
|
|
self.assertEqual(NO_VALUE, self.region.get(single_key))
|
|
|
|
self.region.set_multi(multi_values)
|
|
cached_values = self.region.get_multi(multi_values.keys())
|
|
for value in multi_values.values():
|
|
self.assertIn(value, cached_values)
|
|
self.assertEqual(len(multi_values.values()), len(cached_values))
|
|
|
|
self.region.delete_multi(multi_values.keys())
|
|
for value in self.region.get_multi(multi_values.keys()):
|
|
self.assertEqual(NO_VALUE, value)
|
|
|
|
def test_configure_non_region_object_raises_error(self):
|
|
self.assertRaises(exception.ConfigurationError,
|
|
cache.configure_cache_region,
|
|
self.config_fixture.conf,
|
|
"bogus")
|
|
|
|
|
|
class UTF8KeyManglerTests(BaseTestCase):
|
|
|
|
def test_key_is_utf8_encoded(self):
|
|
key = u'fäké1'
|
|
encoded = cache._sha1_mangle_key(key)
|
|
self.assertIsNotNone(encoded)
|
|
|
|
def test_key_is_bytestring(self):
|
|
key = b'\xcf\x84o\xcf\x81\xce\xbdo\xcf\x82'
|
|
encoded = cache._sha1_mangle_key(key)
|
|
self.assertIsNotNone(encoded)
|
|
|
|
def test_key_is_string(self):
|
|
key = 'fake'
|
|
encoded = cache._sha1_mangle_key(key)
|
|
self.assertIsNotNone(encoded)
|