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Fix 'LruCache' object has no attribute '_on_resize' (#8591)

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We need to make sure we are readu for the `set_cache_factor` callback.
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Richard van der Hoff 2020-10-19 21:13:50 +01:00 • committed by GitHub
parent 34c20493b9
commit 96e7d3c4a0
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3 changed files with 17 additions and 2 deletions
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synapse/util/caches/lrucache.py
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@ -124,6 +124,10 @@ class LruCache(Generic[KT, VT]):
else:
self.max_size = int(max_size)
# register_cache might call our "set_cache_factor" callback; there's nothing to
# do yet when we get resized.
self._on_resize = None # type: Optional[Callable[[],None]]
if cache_name is not None:
metrics = register_cache(
"lru_cache",
@ -332,7 +336,10 @@ class LruCache(Generic[KT, VT]):
return key in cache
self.sentinel = object()
# make sure that we clear out any excess entries after we get resized.
self._on_resize = evict
self.get = cache_get
self.set = cache_set
self.setdefault = cache_set_default
@ -383,6 +390,7 @@ class LruCache(Generic[KT, VT]):
new_size = int(self._original_max_size * factor)
if new_size != self.max_size:
self.max_size = new_size
self._on_resize()
if self._on_resize:
self._on_resize()
return True
return False