优化工单模块，增加企微模块

sg_wechat_enterprise/we_api/session/shovestorage.py

@@ -0,0 +1,34 @@
+# -*- coding: utf-8 -*-
+from __future__ import absolute_import, unicode_literals
+from wechatpy.session import SessionStorage
+
+
+class ShoveStorage(SessionStorage):
+
+    def __init__(self, shove, prefix='wechatpy'):
+        self.shove = shove
+        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)
+        try:
+            return self.shove[key]
+        except KeyError:
+            return default
+
+    def set(self, key, value, ttl=None):
+        if value is None:
+            return
+
+        key = self.key_name(key)
+        self.shove[key] = value
+
+    def delete(self, key):
+        key = self.key_name(key)
+        try:
+            del self.shove[key]
+        except KeyError:
+            pass