mirror of
https://github.com/SickGear/SickGear.git
synced 2024-11-25 22:35:05 +00:00
65 lines
1.5 KiB
Python
65 lines
1.5 KiB
Python
# SPDX-FileCopyrightText: 2015 Eric Larson
|
|
#
|
|
# SPDX-License-Identifier: Apache-2.0
|
|
|
|
"""
|
|
The cache object API for implementing caches. The default is a thread
|
|
safe in-memory dictionary.
|
|
"""
|
|
from threading import Lock
|
|
|
|
|
|
class BaseCache(object):
|
|
|
|
def get(self, key):
|
|
raise NotImplementedError()
|
|
|
|
def set(self, key, value, expires=None):
|
|
raise NotImplementedError()
|
|
|
|
def delete(self, key):
|
|
raise NotImplementedError()
|
|
|
|
def close(self):
|
|
pass
|
|
|
|
|
|
class DictCache(BaseCache):
|
|
|
|
def __init__(self, init_dict=None):
|
|
self.lock = Lock()
|
|
self.data = init_dict or {}
|
|
|
|
def get(self, key):
|
|
return self.data.get(key, None)
|
|
|
|
def set(self, key, value, expires=None):
|
|
with self.lock:
|
|
self.data.update({key: value})
|
|
|
|
def delete(self, key):
|
|
with self.lock:
|
|
if key in self.data:
|
|
self.data.pop(key)
|
|
|
|
|
|
class SeparateBodyBaseCache(BaseCache):
|
|
"""
|
|
In this variant, the body is not stored mixed in with the metadata, but is
|
|
passed in (as a bytes-like object) in a separate call to ``set_body()``.
|
|
|
|
That is, the expected interaction pattern is::
|
|
|
|
cache.set(key, serialized_metadata)
|
|
cache.set_body(key)
|
|
|
|
Similarly, the body should be loaded separately via ``get_body()``.
|
|
"""
|
|
def set_body(self, key, body):
|
|
raise NotImplementedError()
|
|
|
|
def get_body(self, key):
|
|
"""
|
|
Return the body as file-like object.
|
|
"""
|
|
raise NotImplementedError()
|