diff options
Diffstat (limited to 'synapse/util/caches/__init__.py')
| -rw-r--r-- | synapse/util/caches/__init__.py | 32 |
1 files changed, 17 insertions, 15 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: |