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
|
"""Celery cache backend using the Django Cache Framework."""
from celery.backends.base import KeyValueStoreBackend
from django.core.cache import cache as default_cache
from django.core.cache import caches
from kombu.utils.encoding import bytes_to_str
class CacheBackend(KeyValueStoreBackend):
"""Backend using the Django cache framework to store task metadata."""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
# Must make sure backend doesn't convert exceptions to dict.
self.serializer = 'pickle'
def get(self, key):
key = bytes_to_str(key)
return self.cache_backend.get(key)
def set(self, key, value):
key = bytes_to_str(key)
self.cache_backend.set(key, value, self.expires)
def delete(self, key):
key = bytes_to_str(key)
self.cache_backend.delete(key)
def encode(self, data):
return data
def decode(self, data):
return data
@property
def cache_backend(self):
backend = self.app.conf.cache_backend
return caches[backend] if backend else default_cache
|
