0a7c3bf46b
For some Nova scenarios, we will need suppot for set_multi/get_multi/delete_multi for writing to either memcache or dictionary backend. So let's add support for operating on multiple keys. Note that if we don't implement this the default CacheBackend class throws NotImplementedError Closes-Bug: #1483322 Change-Id: I1aca9e65b3be038a507ced8dd039c5413d6c4ac2
116 lines
4.1 KiB
Python
116 lines
4.1 KiB
Python
# Copyright 2015 Mirantis Inc
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from dogpile.cache import region as dp_region
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from oslo_cache import core
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from oslo_cache.tests import test_cache
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from oslo_config import fixture as config_fixture
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from oslo_utils import fixture as time_fixture
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NO_VALUE = core.NO_VALUE
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KEY = 'test_key'
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VALUE = 'test_value'
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class CacheDictBackendTest(test_cache.BaseTestCase):
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def setUp(self):
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super(CacheDictBackendTest, self).setUp()
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self.config_fixture = self.useFixture(config_fixture.Config())
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self.config_fixture.config(group='cache', backend='oslo_cache.dict')
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self.time_fixture = self.useFixture(time_fixture.TimeFixture())
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self.region = dp_region.make_region()
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self.region.configure(
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'oslo_cache.dict', arguments={'expiration_time': 0.5})
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def test_dict_backend(self):
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self.assertIs(NO_VALUE, self.region.get(KEY))
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self.region.set(KEY, VALUE)
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self.assertEqual(VALUE, self.region.get(KEY))
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self.region.delete(KEY)
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self.assertIs(NO_VALUE, self.region.get(KEY))
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def test_dict_backend_expiration_time(self):
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self.region.set(KEY, VALUE)
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self.assertEqual(VALUE, self.region.get(KEY))
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self.time_fixture.advance_time_seconds(1)
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self.assertIs(NO_VALUE, self.region.get(KEY))
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def test_dict_backend_clear_cache(self):
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self.region.set(KEY, VALUE)
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self.time_fixture.advance_time_seconds(1)
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self.assertEqual(1, len(self.region.backend.cache))
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self.region.backend._clear()
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self.assertEqual(0, len(self.region.backend.cache))
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def test_dict_backend_zero_expiration_time(self):
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self.region = dp_region.make_region()
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self.region.configure(
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'oslo_cache.dict', arguments={'expiration_time': 0})
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self.region.set(KEY, VALUE)
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self.time_fixture.advance_time_seconds(1)
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self.assertEqual(VALUE, self.region.get(KEY))
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self.assertEqual(1, len(self.region.backend.cache))
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self.region.backend._clear()
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self.assertEqual(VALUE, self.region.get(KEY))
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self.assertEqual(1, len(self.region.backend.cache))
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def test_dict_backend_multi_keys(self):
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self.region.set('key1', 'value1')
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self.region.set('key2', 'value2')
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self.time_fixture.advance_time_seconds(1)
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self.region.set('key3', 'value3')
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self.assertEqual(1, len(self.region.backend.cache))
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self.assertIs(NO_VALUE, self.region.get('key1'))
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self.assertIs(NO_VALUE, self.region.get('key2'))
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self.assertEqual('value3', self.region.get('key3'))
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def test_dict_backend_multi_keys_in_one_call(self):
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single_value = 'Test Value'
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single_key = 'testkey'
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multi_values = {'key1': 1, 'key2': 2, 'key3': 3}
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self.region.set(single_key, single_value)
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self.assertEqual(single_value, self.region.get(single_key))
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self.region.delete(single_key)
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self.assertEqual(NO_VALUE, self.region.get(single_key))
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self.region.set_multi(multi_values)
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cached_values = self.region.get_multi(multi_values.keys())
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for value in multi_values.values():
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self.assertIn(value, cached_values)
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self.assertEqual(len(multi_values.values()), len(cached_values))
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self.region.delete_multi(multi_values.keys())
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for value in self.region.get_multi(multi_values.keys()):
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self.assertEqual(NO_VALUE, value)
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def test_dict_backend_rewrite_value(self):
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self.region.set(KEY, 'value1')
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self.region.set(KEY, 'value2')
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self.assertEqual('value2', self.region.get(KEY))
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