Claytonia/TeamspeakStats
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TeamspeakStats
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Add version to Cache to avoid unneeded writes 

as calls to Pickle.dump are rather expensive
This commit is contained in:
Thor77 2018-01-11 18:04:54 +01:00
parent 4c2a51bc5a
commit 662a359c4f
1 changed files with 5 additions and 0 deletions
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5
tsstats/cache.py
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@ -18,6 +18,7 @@ class Cache(MutableMapping):
def __init__(self, path, data={}): def __init__(self, path, data={}):
self.path = path self.path = path
self.store = data self.store = data
self.initial_store_version = self.store.setdefault('version', 0)
@classmethod @classmethod
def read(cls, path): def read(cls, path):
@ -34,6 +35,9 @@ class Cache(MutableMapping):
def write(self, path=None): def write(self, path=None):
if not path: if not path:
path = self.path path = self.path
if self.initial_store_version == self.store['version']:
logger.debug('Cached content did not change, skipping write')
return
logger.debug('Writing cache to %s', path) logger.debug('Writing cache to %s', path)
with open(path, 'wb') as f: with open(path, 'wb') as f:
pickle.dump(self.store, f) pickle.dump(self.store, f)
@ -45,6 +49,7 @@ class Cache(MutableMapping):
def __setitem__(self, path, events): def __setitem__(self, path, events):
self.store[path] = CachedLog(path, _calculate_hash(path), list(events)) self.store[path] = CachedLog(path, _calculate_hash(path), list(events))
self.store['version'] += 1
def __getitem__(self, path): def __getitem__(self, path):
return self.store[path] return self.store[path]