mirror of
https://git.anonymousland.org/anonymousland/synapse-product.git
synced 2024-12-30 13:36:12 -05:00
138 lines
3.8 KiB
Python
138 lines
3.8 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2020 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 unittest
|
|
from functools import partial
|
|
|
|
from twisted.internet import defer
|
|
|
|
from synapse.util.caches.deferred_cache import DeferredCache
|
|
|
|
|
|
class DeferredCacheTestCase(unittest.TestCase):
|
|
def test_empty(self):
|
|
cache = DeferredCache("test")
|
|
failed = False
|
|
try:
|
|
cache.get("foo")
|
|
except KeyError:
|
|
failed = True
|
|
|
|
self.assertTrue(failed)
|
|
|
|
def test_hit(self):
|
|
cache = DeferredCache("test")
|
|
cache.prefill("foo", 123)
|
|
|
|
self.assertEquals(cache.get("foo"), 123)
|
|
|
|
def test_invalidate(self):
|
|
cache = DeferredCache("test")
|
|
cache.prefill(("foo",), 123)
|
|
cache.invalidate(("foo",))
|
|
|
|
failed = False
|
|
try:
|
|
cache.get(("foo",))
|
|
except KeyError:
|
|
failed = True
|
|
|
|
self.assertTrue(failed)
|
|
|
|
def test_invalidate_all(self):
|
|
cache = DeferredCache("testcache")
|
|
|
|
callback_record = [False, False]
|
|
|
|
def record_callback(idx):
|
|
callback_record[idx] = True
|
|
|
|
# add a couple of pending entries
|
|
d1 = defer.Deferred()
|
|
cache.set("key1", d1, partial(record_callback, 0))
|
|
|
|
d2 = defer.Deferred()
|
|
cache.set("key2", d2, partial(record_callback, 1))
|
|
|
|
# lookup should return observable deferreds
|
|
self.assertFalse(cache.get("key1").has_called())
|
|
self.assertFalse(cache.get("key2").has_called())
|
|
|
|
# let one of the lookups complete
|
|
d2.callback("result2")
|
|
|
|
# for now at least, the cache will return real results rather than an
|
|
# observabledeferred
|
|
self.assertEqual(cache.get("key2"), "result2")
|
|
|
|
# now do the invalidation
|
|
cache.invalidate_all()
|
|
|
|
# lookup should return none
|
|
self.assertIsNone(cache.get("key1", None))
|
|
self.assertIsNone(cache.get("key2", None))
|
|
|
|
# both callbacks should have been callbacked
|
|
self.assertTrue(callback_record[0], "Invalidation callback for key1 not called")
|
|
self.assertTrue(callback_record[1], "Invalidation callback for key2 not called")
|
|
|
|
# letting the other lookup complete should do nothing
|
|
d1.callback("result1")
|
|
self.assertIsNone(cache.get("key1", None))
|
|
|
|
def test_eviction(self):
|
|
cache = DeferredCache(
|
|
"test", max_entries=2, apply_cache_factor_from_config=False
|
|
)
|
|
|
|
cache.prefill(1, "one")
|
|
cache.prefill(2, "two")
|
|
cache.prefill(3, "three") # 1 will be evicted
|
|
|
|
failed = False
|
|
try:
|
|
cache.get(1)
|
|
except KeyError:
|
|
failed = True
|
|
|
|
self.assertTrue(failed)
|
|
|
|
cache.get(2)
|
|
cache.get(3)
|
|
|
|
def test_eviction_lru(self):
|
|
cache = DeferredCache(
|
|
"test", max_entries=2, apply_cache_factor_from_config=False
|
|
)
|
|
|
|
cache.prefill(1, "one")
|
|
cache.prefill(2, "two")
|
|
|
|
# Now access 1 again, thus causing 2 to be least-recently used
|
|
cache.get(1)
|
|
|
|
cache.prefill(3, "three")
|
|
|
|
failed = False
|
|
try:
|
|
cache.get(2)
|
|
except KeyError:
|
|
failed = True
|
|
|
|
self.assertTrue(failed)
|
|
|
|
cache.get(1)
|
|
cache.get(3)
|