From a8cbce0ced662f92ce7576dd44e5fefe98ffae62 Mon Sep 17 00:00:00 2001 From: Richard van der Hoff Date: Fri, 27 Jul 2018 16:17:17 +0100 Subject: [PATCH] fix invalidation --- synapse/util/caches/descriptors.py | 2 +- tests/util/caches/test_descriptors.py | 42 ++++++++++++++++++++++++++- 2 files changed, 42 insertions(+), 2 deletions(-) diff --git a/synapse/util/caches/descriptors.py b/synapse/util/caches/descriptors.py index 1a8c99d387..861c24809c 100644 --- a/synapse/util/caches/descriptors.py +++ b/synapse/util/caches/descriptors.py @@ -528,7 +528,7 @@ class CacheListDescriptor(_CacheDescriptorBase): deferreds_map[arg] = deferred key = arg_to_cache_key(arg) observable = ObservableDeferred(deferred) - cache.set(key, observable) + cache.set(key, observable, callback=invalidate_callback) def complete_all(res): # the wrapped function has completed. It returns a diff --git a/tests/util/caches/test_descriptors.py b/tests/util/caches/test_descriptors.py index 1ac967b63e..ca8a7c907f 100644 --- a/tests/util/caches/test_descriptors.py +++ b/tests/util/caches/test_descriptors.py @@ -275,7 +275,6 @@ class DescriptorTestCase(unittest.TestCase): obj.mock.assert_not_called() -@unittest.DEBUG class CachedListDescriptorTestCase(unittest.TestCase): @defer.inlineCallbacks def test_cache(self): @@ -334,3 +333,44 @@ class CachedListDescriptorTestCase(unittest.TestCase): r = yield obj.list_fn([10, 20, 30], 2) obj.mock.assert_not_called() self.assertEqual(r, {10: 'fish', 20: 'chips', 30: 'peas'}) + + @defer.inlineCallbacks + def test_invalidate(self): + """Make sure that invalidation callbacks are called.""" + class Cls(object): + def __init__(self): + self.mock = mock.Mock() + + @descriptors.cached() + def fn(self, arg1, arg2): + pass + + @descriptors.cachedList("fn", "args1", inlineCallbacks=True) + def list_fn(self, args1, arg2): + # we want this to behave like an asynchronous function + yield run_on_reactor() + defer.returnValue(self.mock(args1, arg2)) + + obj = Cls() + invalidate0 = mock.Mock() + invalidate1 = mock.Mock() + + # cache miss + obj.mock.return_value = {10: 'fish', 20: 'chips'} + r1 = yield obj.list_fn([10, 20], 2, on_invalidate=invalidate0) + obj.mock.assert_called_once_with([10, 20], 2) + self.assertEqual(r1, {10: 'fish', 20: 'chips'}) + obj.mock.reset_mock() + + # cache hit + r2 = yield obj.list_fn([10, 20], 2, on_invalidate=invalidate1) + obj.mock.assert_not_called() + self.assertEqual(r2, {10: 'fish', 20: 'chips'}) + + invalidate0.assert_not_called() + invalidate1.assert_not_called() + + # now if we invalidate the keys, both invalidations should get called + obj.fn.invalidate((10, 2)) + invalidate0.assert_called_once() + invalidate1.assert_called_once()