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# Copyright 2022 The Matrix.org Foundation C.I.C.
#
# 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 logging, time
import synapse
from synapse.module_api import ModuleApi, cached
from synapse.server import HomeServer
from tests.replication._base import BaseMultiWorkerStreamTestCase
logger = logging.getLogger(__name__)
FIRST_VALUE = "one"
SECOND_VALUE = "two"
KEY = "mykey"
class TestCache:
current_value = FIRST_VALUE
@cached()
async def cached_function(self, user_id: str) -> str:
print(self.current_value)
return self.current_value
class ModuleCacheInvalidationTestCase(BaseMultiWorkerStreamTestCase):
def test_module_cache_full_invalidation(self):
main_cache = TestCache()
self.hs.get_module_api().register_cached_function(main_cache.cached_function)
worker_hs = self.make_worker_hs("synapse.app.generic_worker")
worker_cache = TestCache()
worker_hs.get_module_api().register_cached_function(worker_cache.cached_function)
self.assertEqual(FIRST_VALUE, self.get_success(main_cache.cached_function(KEY)))
self.assertEqual(FIRST_VALUE, self.get_success(worker_cache.cached_function(KEY)))
main_cache.current_value = SECOND_VALUE
worker_cache.current_value = SECOND_VALUE
# No invalidation yet, should return the cached value on both the main process and the worker
self.assertEqual(FIRST_VALUE, self.get_success(main_cache.cached_function(KEY)))
self.assertEqual(FIRST_VALUE, self.get_success(worker_cache.cached_function(KEY)))
self.reactor.advance(1)
# Full invalidation on the main process, should be replicated on the worker that
# should returned the updated value too
self.get_success(
self.hs.get_module_api().invalidate_cache(main_cache.cached_function, (KEY,))
)
self.reactor.advance(1)
self.assertEqual(SECOND_VALUE, self.get_success(main_cache.cached_function(KEY)))
self.assertEqual(SECOND_VALUE, self.get_success(worker_cache.cached_function(KEY)))
# def test_module_cache_local_invalidation_only(self):
# main_cache = TestCache()
# worker_cache = TestCache()
# worker_hs = self.make_worker_hs("synapse.app.generic_worker")
# self.assertEqual(FIRST_VALUE, self.get_success(main_cache.cached_function(KEY)))
# self.assertEqual(FIRST_VALUE, self.get_success(worker_cache.cached_function(KEY)))
# main_cache.current_value = SECOND_VALUE
# worker_cache.current_value = SECOND_VALUE
# # No local invalidation yet, should return the cached value on both the main process and the worker
# self.assertEqual(FIRST_VALUE, self.get_success(main_cache.cached_function(KEY)))
# self.assertEqual(FIRST_VALUE, self.get_success(worker_cache.cached_function(KEY)))
# # local invalidation on the main process, worker should still return the cached value
# main_cache.cached_function.invalidate((KEY,))
# self.assertEqual(SECOND_VALUE, self.get_success(main_cache.cached_function(KEY)))
# self.assertEqual(FIRST_VALUE, self.get_success(worker_cache.cached_function(KEY)))
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