diff options
Diffstat (limited to 'synapse/util/caches')
| -rw-r--r-- | synapse/util/caches/descriptors.py | 20 | ||||
| -rw-r--r-- | synapse/util/caches/expiringcache.py | 2 | ||||
| -rw-r--r-- | synapse/util/caches/snapshot_cache.py | 3 | ||||
| -rw-r--r-- | synapse/util/caches/stream_change_cache.py | 16 | ||||
| -rw-r--r-- | synapse/util/caches/treecache.py | 2 |
5 files changed, 24 insertions, 19 deletions
diff --git a/synapse/util/caches/descriptors.py b/synapse/util/caches/descriptors.py index 88e56e3302..277854ccbc 100644 --- a/synapse/util/caches/descriptors.py +++ b/synapse/util/caches/descriptors.py @@ -18,6 +18,9 @@ from synapse.util.async import ObservableDeferred from synapse.util import unwrapFirstError from synapse.util.caches.lrucache import LruCache from synapse.util.caches.treecache import TreeCache +from synapse.util.logcontext import ( + PreserveLoggingContext, preserve_context_over_deferred, preserve_context_over_fn +) from . import caches_by_name, DEBUG_CACHES, cache_counter @@ -149,7 +152,7 @@ class CacheDescriptor(object): self.lru = lru self.tree = tree - self.arg_names = inspect.getargspec(orig).args[1:num_args+1] + self.arg_names = inspect.getargspec(orig).args[1:num_args + 1] if len(self.arg_names) < self.num_args: raise Exception( @@ -190,7 +193,7 @@ class CacheDescriptor(object): defer.returnValue(cached_result) observer.addCallback(check_result) - return observer + return preserve_context_over_deferred(observer) except KeyError: # Get the sequence number of the cache before reading from the # database so that we can tell if the cache is invalidated @@ -198,6 +201,7 @@ class CacheDescriptor(object): sequence = self.cache.sequence ret = defer.maybeDeferred( + preserve_context_over_fn, self.function_to_call, obj, *args, **kwargs ) @@ -211,7 +215,7 @@ class CacheDescriptor(object): ret = ObservableDeferred(ret, consumeErrors=True) self.cache.update(sequence, cache_key, ret) - return ret.observe() + return preserve_context_over_deferred(ret.observe()) wrapped.invalidate = self.cache.invalidate wrapped.invalidate_all = self.cache.invalidate_all @@ -250,7 +254,7 @@ class CacheListDescriptor(object): self.num_args = num_args self.list_name = list_name - self.arg_names = inspect.getargspec(orig).args[1:num_args+1] + self.arg_names = inspect.getargspec(orig).args[1:num_args + 1] self.list_pos = self.arg_names.index(self.list_name) self.cache = cache @@ -299,6 +303,7 @@ class CacheListDescriptor(object): args_to_call[self.list_name] = missing ret_d = defer.maybeDeferred( + preserve_context_over_fn, self.function_to_call, **args_to_call ) @@ -308,7 +313,8 @@ class CacheListDescriptor(object): # We need to create deferreds for each arg in the list so that # we can insert the new deferred into the cache. for arg in missing: - observer = ret_d.observe() + with PreserveLoggingContext(): + observer = ret_d.observe() observer.addCallback(lambda r, arg: r.get(arg, None), arg) observer = ObservableDeferred(observer) @@ -327,10 +333,10 @@ class CacheListDescriptor(object): cached[arg] = res - return defer.gatherResults( + return preserve_context_over_deferred(defer.gatherResults( cached.values(), consumeErrors=True, - ).addErrback(unwrapFirstError).addCallback(lambda res: dict(res)) + ).addErrback(unwrapFirstError).addCallback(lambda res: dict(res))) obj.__dict__[self.orig.__name__] = wrapped diff --git a/synapse/util/caches/expiringcache.py b/synapse/util/caches/expiringcache.py index 494226f5ea..62cae99649 100644 --- a/synapse/util/caches/expiringcache.py +++ b/synapse/util/caches/expiringcache.py @@ -55,7 +55,7 @@ class ExpiringCache(object): def f(): self._prune_cache() - self._clock.looping_call(f, self._expiry_ms/2) + self._clock.looping_call(f, self._expiry_ms / 2) def __setitem__(self, key, value): now = self._clock.time_msec() diff --git a/synapse/util/caches/snapshot_cache.py b/synapse/util/caches/snapshot_cache.py index b1e40417fd..d03678b8c8 100644 --- a/synapse/util/caches/snapshot_cache.py +++ b/synapse/util/caches/snapshot_cache.py @@ -87,7 +87,8 @@ class SnapshotCache(object): # expire from the rotation of that cache. self.next_result_cache[key] = result self.pending_result_cache.pop(key, None) + return r - result.observe().addBoth(shuffle_along) + result.addBoth(shuffle_along) return result.observe() diff --git a/synapse/util/caches/stream_change_cache.py b/synapse/util/caches/stream_change_cache.py index c673b1bdfc..b37f1c0725 100644 --- a/synapse/util/caches/stream_change_cache.py +++ b/synapse/util/caches/stream_change_cache.py @@ -32,7 +32,7 @@ class StreamChangeCache(object): entities that may have changed since that position. If position key is too old then the cache will simply return all given entities. """ - def __init__(self, name, current_stream_pos, max_size=10000): + def __init__(self, name, current_stream_pos, max_size=10000, prefilled_cache={}): self._max_size = max_size self._entity_to_key = {} self._cache = sorteddict() @@ -40,6 +40,9 @@ class StreamChangeCache(object): self.name = name caches_by_name[self.name] = self._cache + for entity, stream_pos in prefilled_cache.items(): + self.entity_has_changed(entity, stream_pos) + def has_entity_changed(self, entity, stream_pos): """Returns True if the entity may have been updated since stream_pos """ @@ -49,15 +52,10 @@ class StreamChangeCache(object): cache_counter.inc_misses(self.name) return True - if stream_pos == self._earliest_known_stream_pos: - # If the same as the earliest key, assume nothing has changed. - cache_counter.inc_hits(self.name) - return False - latest_entity_change_pos = self._entity_to_key.get(entity, None) if latest_entity_change_pos is None: - cache_counter.inc_misses(self.name) - return True + cache_counter.inc_hits(self.name) + return False if stream_pos < latest_entity_change_pos: cache_counter.inc_misses(self.name) @@ -95,7 +93,7 @@ class StreamChangeCache(object): if stream_pos > self._earliest_known_stream_pos: old_pos = self._entity_to_key.get(entity, None) - if old_pos: + if old_pos is not None: stream_pos = max(stream_pos, old_pos) self._cache.pop(old_pos, None) self._cache[stream_pos] = entity diff --git a/synapse/util/caches/treecache.py b/synapse/util/caches/treecache.py index 29d02f7e95..03bc1401b7 100644 --- a/synapse/util/caches/treecache.py +++ b/synapse/util/caches/treecache.py @@ -58,7 +58,7 @@ class TreeCache(object): if n: break - node_and_keys[i+1][0].pop(k) + node_and_keys[i + 1][0].pop(k) popped, cnt = _strip_and_count_entires(popped) self.size -= cnt |