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item-cache-mtime-size: feature

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This commit is contained in:
Peter Bieringer 2024-12-15 11:40:58 +01:00
parent ff3f2fc3de
commit 62bdfeab40
3 changed files with 77 additions and 30 deletions
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21
radicale/storage/multifilesystem/cache.py
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@ -73,6 +73,10 @@ class CollectionPartCache(CollectionBase):
_hash.update(raw_text)
return _hash.hexdigest()
@staticmethod
def _item_cache_mtime_and_size(size: bytes, raw_text: bytes) -> str:
return str(storage.CACHE_VERSION.decode()) + "size=" + str(size) + ";mtime=" + str(raw_text)
def _item_cache_content(self, item: radicale_item.Item) -> CacheContent:
return CacheContent(item.uid, item.etag, item.serialize(), item.name,
item.component_name, *item.time_range)
@ -80,8 +84,11 @@ class CollectionPartCache(CollectionBase):
def _store_item_cache(self, href: str, item: radicale_item.Item,
cache_hash: str = "") -> CacheContent:
if not cache_hash:
cache_hash = self._item_cache_hash(
item.serialize().encode(self._encoding))
if self._storage._use_mtime_and_size_for_item_cache is True:
raise RuntimeError("_store_item_cache called without cache_hash is not supported if [storage] use_mtime_and_size_for_item_cache is True")
else:
cache_hash = self._item_cache_hash(
item.serialize().encode(self._encoding))
cache_folder = self._storage._get_collection_cache_subfolder(self._filesystem_path, ".Radicale.cache", "item")
content = self._item_cache_content(item)
self._storage._makedirs_synced(cache_folder)
@ -96,12 +103,20 @@ class CollectionPartCache(CollectionBase):
def _load_item_cache(self, href: str, cache_hash: str
) -> Optional[CacheContent]:
cache_folder = self._storage._get_collection_cache_subfolder(self._filesystem_path, ".Radicale.cache", "item")
path = os.path.join(cache_folder, href)
try:
with open(os.path.join(cache_folder, href), "rb") as f:
with open(path, "rb") as f:
hash_, *remainder = pickle.load(f)
if hash_ and hash_ == cache_hash:
if self._storage._debug_cache_actions is True:
logger.debug("Item cache match : %r with hash %r", path, cache_hash)
return CacheContent(*remainder)
else:
if self._storage._debug_cache_actions is True:
logger.debug("Item cache no match : %r with hash %r", path, cache_hash)
except FileNotFoundError:
if self._storage._debug_cache_actions is True:
logger.debug("Item cache not found : %r with hash %r", path, cache_hash)
pass
except (pickle.UnpicklingError, ValueError) as e:
logger.warning("Failed to load item cache entry %r in %r: %s",