diff options
Diffstat (limited to 'synapse/util/caches/descriptors.py')
| -rw-r--r-- | synapse/util/caches/descriptors.py | 32 |
1 files changed, 7 insertions, 25 deletions
diff --git a/synapse/util/caches/descriptors.py b/synapse/util/caches/descriptors.py index 1f43886804..a4172345ef 100644 --- a/synapse/util/caches/descriptors.py +++ b/synapse/util/caches/descriptors.py @@ -23,7 +23,6 @@ from twisted.internet import defer from synapse.logging.context import make_deferred_yieldable, preserve_fn from synapse.util import unwrapFirstError -from synapse.util.async_helpers import ObservableDeferred from synapse.util.caches.deferred_cache import DeferredCache logger = logging.getLogger(__name__) @@ -156,7 +155,7 @@ class CacheDescriptor(_CacheDescriptorBase): keylen=self.num_args, tree=self.tree, iterable=self.iterable, - ) # type: DeferredCache[Tuple, Any] + ) # type: DeferredCache[CacheKey, Any] def get_cache_key_gen(args, kwargs): """Given some args/kwargs return a generator that resolves into @@ -208,26 +207,12 @@ class CacheDescriptor(_CacheDescriptorBase): kwargs["cache_context"] = _CacheContext.get_instance(cache, cache_key) try: - cached_result_d = cache.get(cache_key, callback=invalidate_callback) - - if isinstance(cached_result_d, ObservableDeferred): - observer = cached_result_d.observe() - else: - observer = defer.succeed(cached_result_d) - + ret = cache.get(cache_key, callback=invalidate_callback) except KeyError: ret = defer.maybeDeferred(preserve_fn(self.orig), obj, *args, **kwargs) + ret = cache.set(cache_key, ret, callback=invalidate_callback) - def onErr(f): - cache.invalidate(cache_key) - return f - - ret.addErrback(onErr) - - result_d = cache.set(cache_key, ret, callback=invalidate_callback) - observer = result_d.observe() - - return make_deferred_yieldable(observer) + return make_deferred_yieldable(ret) wrapped = cast(_CachedFunction, _wrapped) @@ -286,7 +271,7 @@ class CacheListDescriptor(_CacheDescriptorBase): def __get__(self, obj, objtype=None): cached_method = getattr(obj, self.cached_method_name) - cache = cached_method.cache + cache = cached_method.cache # type: DeferredCache[CacheKey, Any] num_args = cached_method.num_args @functools.wraps(self.orig) @@ -326,14 +311,11 @@ class CacheListDescriptor(_CacheDescriptorBase): for arg in list_args: try: res = cache.get(arg_to_cache_key(arg), callback=invalidate_callback) - if not isinstance(res, ObservableDeferred): - results[arg] = res - elif not res.has_succeeded(): - res = res.observe() + if not res.called: res.addCallback(update_results_dict, arg) cached_defers.append(res) else: - results[arg] = res.get_result() + results[arg] = res.result except KeyError: missing.add(arg) |