|
|
@ -19,40 +19,42 @@ |
|
|
|
|
|
|
|
import time |
|
|
|
import logging |
|
|
|
import datetime |
|
|
|
import functools |
|
|
|
|
|
|
|
_logger = logging.getLogger(__name__) |
|
|
|
|
|
|
|
class memoize(object): |
|
|
|
|
|
|
|
_caches = {} |
|
|
|
_timeouts = {} |
|
|
|
#---------------------------------------------------------- |
|
|
|
# Properties |
|
|
|
#---------------------------------------------------------- |
|
|
|
|
|
|
|
def __init__(self, timeout=2): |
|
|
|
self.timeout = timeout |
|
|
|
class cached_property(object): |
|
|
|
|
|
|
|
def collect(self): |
|
|
|
for func in self._caches: |
|
|
|
cleaned_cache = {} |
|
|
|
current_time = time.time() |
|
|
|
for key in self._caches[func]: |
|
|
|
if (current_time - self._caches[func][key][1]) < self._timeouts[func]: |
|
|
|
cleaned_cache[key] = self._caches[func][key] |
|
|
|
self._caches[func] = cleaned_cache |
|
|
|
def __init__(self, timeout=None): |
|
|
|
self.timeout = timeout |
|
|
|
|
|
|
|
def __call__(self, func): |
|
|
|
self.cache = self._caches[func] = {} |
|
|
|
self._timeouts[func] = self.timeout |
|
|
|
@functools.wraps(func) |
|
|
|
def wrapper(*args, **kwargs): |
|
|
|
current_time = time.time() |
|
|
|
kw = sorted(kwargs.items()) |
|
|
|
key = (args, tuple(kw)) |
|
|
|
return functools.update_wrapper(self, func) |
|
|
|
|
|
|
|
def __get__(self, obj, cls): |
|
|
|
if obj is None: |
|
|
|
return self |
|
|
|
try: |
|
|
|
value = self.cache[key] |
|
|
|
if (current_time - value[1]) > self.timeout: |
|
|
|
raise KeyError |
|
|
|
value, last_updated = obj.__dict__[self.__name__] |
|
|
|
except KeyError: |
|
|
|
value = self.cache[key] = (func(*args,**kwargs), current_time) |
|
|
|
return value[0] |
|
|
|
return wrapper |
|
|
|
pass |
|
|
|
else: |
|
|
|
if self.timeout is None: |
|
|
|
return value |
|
|
|
elif self.timeout >= time.time() - last_updated: |
|
|
|
return value |
|
|
|
value = self.__wrapped__(obj) |
|
|
|
obj.__dict__[self.__name__] = (value, time.time()) |
|
|
|
return value |
|
|
|
|
|
|
|
def __delete__(self, obj): |
|
|
|
obj.__dict__.pop(self.__name__, None) |
|
|
|
|
|
|
|
def __set__(self, obj, value): |
|
|
|
obj.__dict__[self.__name__] = (value, time()) |