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import time
from django.conf import settings
from django.core.cache import caches
class Cache(object):
"""
Will simply proxy cache calls to django's internal
cache framework
"""
def __init__(self, name='default'):
self._cache = caches[name]
def get(self, key):
return self._cache.get(key)
def delete(self, key):
return self._cache.delete(key)
def expire_at(self, key, max_age):
raise NotImplementedError('Unsupported by django cache backend')
def exists(self, key):
return self.get(key) is not None
def __getitem__(self):
return self.get(key)
def __setitem__(self, key, value):
expiry = value[2]
seconds = None
if expiry:
# this is a bit ugly, but django's cache framework
# requires an expiry in seconds
# to we reverse-compute that value from the expiry given in the
# data tuple
now = time.time()
seconds = int(expiry - now)
return self._cache.set(key, value, seconds)
def __delitem__(key):
return self.delete(key)
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