def test_clear(self):
pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
shuffle(pairs)
od = OrderedDict(pairs)
self.assertEqual(len(od), len(pairs))
od.clear()
self.assertEqual(len(od), 0)
def test_clear(self):
pairs = [('c', 1), ('b', 2), ('a', 3), ('d', 4), ('e', 5), ('f', 6)]
shuffle(pairs)
od = OrderedDict(pairs)
self.assertEqual(len(od), len(pairs))
od.clear()
self.assertEqual(len(od), 0)
class DictCache(AbstractCache):
"""Implementation of a cache in a memory dictionary
"""
def __init__(self, ttl=60):
"""Creates a new instance
params:
``ttl``
Time to live of the data.
"""
super(DictCache, self).__init__(ttl=ttl)
try:
self._ich = collections.OrderedDict()
self._ttds = collections.OrderedDict()
except AttributeError:
#This version of python does not support OrderedDict
from ordereddict import OrderedDict
self._ich = OrderedDict()
self._ttds = OrderedDict()
def store_data(self, k, ttl, v):
self._ich[k] = v
self._ttds[k] = (
time.time() + ttl if ttl != None else None
)
def retrieve_data(self, k):
ttd = self._ttds.get(k, 0)
if ttd == None or time.time() < ttd:
return self._ich[k]
elif ttd:
self._ttds.pop(k)
self._ich.pop(k)
def clear_expired(self):
for k, ttd in self._ttds.items():
if ttd != None and ttd < time.time():
self._ttds.pop(k)
self._ich.pop(k)
else:
break
def clear(self):
self._ich.clear()
self._ttds.clear()
