1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
# Copyright (C) 2008 Dejan Muhamedagic <dmuhamedagic@suse.de>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This software is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
import time
from singletonmixin import Singleton
class WCache(Singleton):
"Cache stuff. A naive implementation."
def __init__(self):
self.lists = {}
self.stamp = time.time()
self.max_cache_age = 600 # seconds
def is_cached(self,name):
if time.time() - self.stamp > self.max_cache_age:
self.stamp = time.time()
self.clear()
return name in self.lists
def store(self,name,lst):
self.lists[name] = lst
return lst
def retrieve(self,name):
if self.is_cached(name):
return self.lists[name]
else:
return None
def clear(self):
self.lists = {}
# vim:ts=4:sw=4:et:
|
