优化工单模块，增加企微模块

sg_wechat_enterprise/we_api/session/redisstorage.py

@@ -0,0 +1,35 @@
+# -*- coding: utf-8 -*-
+from __future__ import absolute_import, unicode_literals
+from wechatpy.session import SessionStorage
+from wechatpy.utils import to_text
+from wechatpy.utils import json
+
+
+class RedisStorage(SessionStorage):
+
+    def __init__(self, redis, prefix='wechatpy'):
+        for method_name in ('get', 'set', 'delete'):
+            assert hasattr(redis, method_name)
+        self.redis = redis
+        self.prefix = prefix
+
+    def key_name(self, key):
+        return '{0}:{1}'.format(self.prefix, key)
+
+    def get(self, key, default=None):
+        key = self.key_name(key)
+        value = self.redis.get(key)
+        if value is None:
+            return default
+        return json.loads(to_text(value))
+
+    def set(self, key, value, ttl=None):
+        if value is None:
+            return
+        key = self.key_name(key)
+        value = json.dumps(value)
+        self.redis.set(key, value, ex=ttl)
+
+    def delete(self, key):
+        key = self.key_name(key)
+        self.redis.delete(key)