diff options
Diffstat (limited to 'synapse/util/caches')
| -rw-r--r-- | synapse/util/caches/__init__.py | 32 | ||||
| -rw-r--r-- | synapse/util/caches/deferred_cache.py | 2 | ||||
| -rw-r--r-- | synapse/util/caches/descriptors.py | 67 | ||||
| -rw-r--r-- | synapse/util/caches/expiringcache.py | 10 |
4 files changed, 66 insertions, 45 deletions
diff --git a/synapse/util/caches/__init__.py b/synapse/util/caches/__init__.py index df4d61e4b6..15debd6c46 100644 --- a/synapse/util/caches/__init__.py +++ b/synapse/util/caches/__init__.py @@ -17,7 +17,7 @@ import logging import typing from enum import Enum, auto from sys import intern -from typing import Callable, Dict, Optional, Sized +from typing import Any, Callable, Dict, List, Optional, Sized import attr from prometheus_client.core import Gauge @@ -58,20 +58,20 @@ class EvictionReason(Enum): time = auto() -@attr.s(slots=True) +@attr.s(slots=True, auto_attribs=True) class CacheMetric: - _cache = attr.ib() - _cache_type = attr.ib(type=str) - _cache_name = attr.ib(type=str) - _collect_callback = attr.ib(type=Optional[Callable]) + _cache: Sized + _cache_type: str + _cache_name: str + _collect_callback: Optional[Callable] - hits = attr.ib(default=0) - misses = attr.ib(default=0) + hits: int = 0 + misses: int = 0 eviction_size_by_reason: typing.Counter[EvictionReason] = attr.ib( factory=collections.Counter ) - memory_usage = attr.ib(default=None) + memory_usage: Optional[int] = None def inc_hits(self) -> None: self.hits += 1 @@ -89,13 +89,14 @@ class CacheMetric: self.memory_usage += memory def dec_memory_usage(self, memory: int) -> None: + assert self.memory_usage is not None self.memory_usage -= memory def clear_memory_usage(self) -> None: if self.memory_usage is not None: self.memory_usage = 0 - def describe(self): + def describe(self) -> List[str]: return [] def collect(self) -> None: @@ -118,8 +119,9 @@ class CacheMetric: self.eviction_size_by_reason[reason] ) cache_total.labels(self._cache_name).set(self.hits + self.misses) - if getattr(self._cache, "max_size", None): - cache_max_size.labels(self._cache_name).set(self._cache.max_size) + max_size = getattr(self._cache, "max_size", None) + if max_size: + cache_max_size.labels(self._cache_name).set(max_size) if TRACK_MEMORY_USAGE: # self.memory_usage can be None if nothing has been inserted @@ -193,7 +195,7 @@ KNOWN_KEYS = { } -def intern_string(string): +def intern_string(string: Optional[str]) -> Optional[str]: """Takes a (potentially) unicode string and interns it if it's ascii""" if string is None: return None @@ -204,7 +206,7 @@ def intern_string(string): return string -def intern_dict(dictionary): +def intern_dict(dictionary: Dict[str, Any]) -> Dict[str, Any]: """Takes a dictionary and interns well known keys and their values""" return { KNOWN_KEYS.get(key, key): _intern_known_values(key, value) @@ -212,7 +214,7 @@ def intern_dict(dictionary): } -def _intern_known_values(key, value): +def _intern_known_values(key: str, value: Any) -> Any: intern_keys = ("event_id", "room_id", "sender", "user_id", "type", "state_key") if key in intern_keys: diff --git a/synapse/util/caches/deferred_cache.py b/synapse/util/caches/deferred_cache.py index da502aec11..3c4cc093af 100644 --- a/synapse/util/caches/deferred_cache.py +++ b/synapse/util/caches/deferred_cache.py @@ -289,7 +289,7 @@ class DeferredCache(Generic[KT, VT]): callbacks = [callback] if callback else [] self.cache.set(key, value, callbacks=callbacks) - def invalidate(self, key) -> None: + def invalidate(self, key: KT) -> None: """Delete a key, or tree of entries If the cache is backed by a regular dict, then "key" must be of diff --git a/synapse/util/caches/descriptors.py b/synapse/util/caches/descriptors.py index b9dcca17f1..375cd443f1 100644 --- a/synapse/util/caches/descriptors.py +++ b/synapse/util/caches/descriptors.py @@ -19,12 +19,15 @@ import logging from typing import ( Any, Callable, + Dict, Generic, + Hashable, Iterable, Mapping, Optional, Sequence, Tuple, + Type, TypeVar, Union, cast, @@ -32,6 +35,7 @@ from typing import ( from weakref import WeakValueDictionary from twisted.internet import defer +from twisted.python.failure import Failure from synapse.logging.context import make_deferred_yieldable, preserve_fn from synapse.util import unwrapFirstError @@ -60,7 +64,12 @@ class _CachedFunction(Generic[F]): class _CacheDescriptorBase: - def __init__(self, orig: Callable[..., Any], num_args, cache_context=False): + def __init__( + self, + orig: Callable[..., Any], + num_args: Optional[int], + cache_context: bool = False, + ): self.orig = orig arg_spec = inspect.getfullargspec(orig) @@ -172,14 +181,14 @@ class LruCacheDescriptor(_CacheDescriptorBase): def __init__( self, - orig, + orig: Callable[..., Any], max_entries: int = 1000, cache_context: bool = False, ): super().__init__(orig, num_args=None, cache_context=cache_context) self.max_entries = max_entries - def __get__(self, obj, owner): + def __get__(self, obj: Optional[Any], owner: Optional[Type]) -> Callable[..., Any]: cache: LruCache[CacheKey, Any] = LruCache( cache_name=self.orig.__name__, max_size=self.max_entries, @@ -189,7 +198,7 @@ class LruCacheDescriptor(_CacheDescriptorBase): sentinel = LruCacheDescriptor._Sentinel.sentinel @functools.wraps(self.orig) - def _wrapped(*args, **kwargs): + def _wrapped(*args: Any, **kwargs: Any) -> Any: invalidate_callback = kwargs.pop("on_invalidate", None) callbacks = (invalidate_callback,) if invalidate_callback else () @@ -245,19 +254,19 @@ class DeferredCacheDescriptor(_CacheDescriptorBase): return r1 + r2 Args: - num_args (int): number of positional arguments (excluding ``self`` and + num_args: number of positional arguments (excluding ``self`` and ``cache_context``) to use as cache keys. Defaults to all named args of the function. """ def __init__( self, - orig, - max_entries=1000, - num_args=None, - tree=False, - cache_context=False, - iterable=False, + orig: Callable[..., Any], + max_entries: int = 1000, + num_args: Optional[int] = None, + tree: bool = False, + cache_context: bool = False, + iterable: bool = False, prune_unread_entries: bool = True, ): super().__init__(orig, num_args=num_args, cache_context=cache_context) @@ -272,7 +281,7 @@ class DeferredCacheDescriptor(_CacheDescriptorBase): self.iterable = iterable self.prune_unread_entries = prune_unread_entries - def __get__(self, obj, owner): + def __get__(self, obj: Optional[Any], owner: Optional[Type]) -> Callable[..., Any]: cache: DeferredCache[CacheKey, Any] = DeferredCache( name=self.orig.__name__, max_entries=self.max_entries, @@ -284,7 +293,7 @@ class DeferredCacheDescriptor(_CacheDescriptorBase): get_cache_key = self.cache_key_builder @functools.wraps(self.orig) - def _wrapped(*args, **kwargs): + def _wrapped(*args: Any, **kwargs: Any) -> Any: # If we're passed a cache_context then we'll want to call its invalidate() # whenever we are invalidated invalidate_callback = kwargs.pop("on_invalidate", None) @@ -335,13 +344,19 @@ class DeferredCacheListDescriptor(_CacheDescriptorBase): of results. """ - def __init__(self, orig, cached_method_name, list_name, num_args=None): + def __init__( + self, + orig: Callable[..., Any], + cached_method_name: str, + list_name: str, + num_args: Optional[int] = None, + ): """ Args: - orig (function) - cached_method_name (str): The name of the cached method. - list_name (str): Name of the argument which is the bulk lookup list - num_args (int): number of positional arguments (excluding ``self``, + orig + cached_method_name: The name of the cached method. + list_name: Name of the argument which is the bulk lookup list + num_args: number of positional arguments (excluding ``self``, but including list_name) to use as cache keys. Defaults to all named args of the function. """ @@ -360,13 +375,15 @@ class DeferredCacheListDescriptor(_CacheDescriptorBase): % (self.list_name, cached_method_name) ) - def __get__(self, obj, objtype=None): + def __get__( + self, obj: Optional[Any], objtype: Optional[Type] = None + ) -> Callable[..., Any]: cached_method = getattr(obj, self.cached_method_name) cache: DeferredCache[CacheKey, Any] = cached_method.cache num_args = cached_method.num_args @functools.wraps(self.orig) - def wrapped(*args, **kwargs): + def wrapped(*args: Any, **kwargs: Any) -> Any: # If we're passed a cache_context then we'll want to call its # invalidate() whenever we are invalidated invalidate_callback = kwargs.pop("on_invalidate", None) @@ -377,7 +394,7 @@ class DeferredCacheListDescriptor(_CacheDescriptorBase): results = {} - def update_results_dict(res, arg): + def update_results_dict(res: Any, arg: Hashable) -> None: results[arg] = res # list of deferreds to wait for @@ -389,13 +406,13 @@ class DeferredCacheListDescriptor(_CacheDescriptorBase): # otherwise a tuple is used. if num_args == 1: - def arg_to_cache_key(arg): + def arg_to_cache_key(arg: Hashable) -> Hashable: return arg else: keylist = list(keyargs) - def arg_to_cache_key(arg): + def arg_to_cache_key(arg: Hashable) -> Hashable: keylist[self.list_pos] = arg return tuple(keylist) @@ -421,7 +438,7 @@ class DeferredCacheListDescriptor(_CacheDescriptorBase): key = arg_to_cache_key(arg) cache.set(key, deferred, callback=invalidate_callback) - def complete_all(res): + def complete_all(res: Dict[Hashable, Any]) -> None: # the wrapped function has completed. It returns a # a dict. We can now resolve the observable deferreds in # the cache and update our own result map. @@ -430,7 +447,7 @@ class DeferredCacheListDescriptor(_CacheDescriptorBase): deferreds_map[e].callback(val) results[e] = val - def errback(f): + def errback(f: Failure) -> Failure: # the wrapped function has failed. Invalidate any cache # entries we're supposed to be populating, and fail # their deferreds. diff --git a/synapse/util/caches/expiringcache.py b/synapse/util/caches/expiringcache.py index c3f72aa06d..6a7e534576 100644 --- a/synapse/util/caches/expiringcache.py +++ b/synapse/util/caches/expiringcache.py @@ -19,6 +19,8 @@ from typing import Any, Generic, Optional, TypeVar, Union, overload import attr from typing_extensions import Literal +from twisted.internet import defer + from synapse.config import cache as cache_config from synapse.metrics.background_process_metrics import run_as_background_process from synapse.util import Clock @@ -81,7 +83,7 @@ class ExpiringCache(Generic[KT, VT]): # Don't bother starting the loop if things never expire return - def f(): + def f() -> "defer.Deferred[None]": return run_as_background_process( "prune_cache_%s" % self._cache_name, self._prune_cache ) @@ -210,7 +212,7 @@ class ExpiringCache(Generic[KT, VT]): return False -@attr.s(slots=True) +@attr.s(slots=True, auto_attribs=True) class _CacheEntry: - time = attr.ib(type=int) - value = attr.ib() + time: int + value: Any |