def saveIfStale(self):
now = time.time()
if now - self.saveTime_ > self.saveTimeout_:
try:
self.save()
except:
logger.exception("non-fatal error: Could not save cahced data to %s" % self.path_)
return
self.saveTime_ = now
def __init__(self, classToWrap, path, saveTimeout, **kwargs):
self.saveTimeout_ = saveTimeout
self.path_ = path
self.instance_ = None
if os.path.exists(path):
try:
f = file(path, "r")
self.instance_ = cPickle.loads(f.read())
f.close()
self.saveTime_ = time.time()
except:
logger.exception("Could not load cached data from %s" % path)
if not self.instance_:
self.instance_ = classToWrap(**kwargs)
self.saveTime_ = 0
else:
self.instance_.init(**kwargs)
self.lock_ = dsthread.ReadWriteLock(threading.RLock)