GAESessions（Python） - “AttributeError: 'thread._local'对象没有'current_session'属性。”

Question

我最近在尝试把Janrain Engage这个插件加到我正在开发的应用里（使用的是Google App Engine（Python 2.7）），并且用GAESessions作为会话管理库。

按照GAESessions页面上的说明，我在应用的根目录下创建了一个“gaesessions”文件夹（里面有一个“__init__.py”文件），还创建了“appengine_config.py”文件，以及处理插件所需的相关文件。

但是，当我尝试通过Janrain登录时，却遇到了500错误，并在GAE日志中看到了这个错误追踪信息：

E 2013-03-25 07:06:55.535

'thread._local' object has no attribute 'current_session'
Traceback (most recent call last):
  File "/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1536, in __call__
    rv = self.handle_exception(request, response, e)
  File "/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1530, in __call__
    rv = self.router.dispatch(request, response)
  File "/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1278, in default_dispatcher
    return route.handler_adapter(request, response)
  File "/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1102, in __call__
    return handler.dispatch()
  File "/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 572, in dispatch
    return self.handle_exception(e, self.app.debug)
  File "/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 570, in dispatch
    return method(*args, **kwargs)
  File "/base/data/home/apps/s~k-sketch-test/10.366190612177083948/rpx.py", line 56, in post
    session = get_current_session()
  File "/base/data/home/apps/s~k-sketch-test/10.366190612177083948/gaesessions/__init__.py", line 38, in get_current_session
    return _tls.current_session
AttributeError: 'thread._local' object has no attribute 'current_session'

我查阅了关于“get_current_session()”问题的其他帖子和相关帖子，但它们似乎提到的是'local'而不是'thread._local'。

有没有人知道这是怎么回事？提前谢谢大家！

========

{根文件夹}/appengine_config.py

from gaesessions import SessionMiddleware

import os
COOKIE_KEY = '<hidden - was generated through os.urandom(64)>'

def webapp_add_wsgi_middleware(app):
  from google.appengine.ext.appstats import recording
  app = SessionMiddleware(app, cookie_key=COOKIE_KEY)
  app = recording.appstats_wsgi_middleware(app)
  return app

========

gae error handling google app engine session management attributeerror gaesessions janrain engage app configuration

GAESessions（Python） - “AttributeError: 'thread._local'对象没有'current_session'属性。”

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