Use flask.g instead of _app_ctx_stack

ref: lepture/authlib#482

authlib/integrations/flask_client/apps.py

@@ -1,5 +1,4 @@
-from flask import redirect, request, session
-from flask import _app_ctx_stack
+from flask import g, redirect, request, session
 from ..requests_client import OAuth1Session, OAuth2Session
 from ..base_client import (
     BaseApp, OAuthError,
@@ -10,9 +9,8 @@
 class FlaskAppMixin(object):
     @property
     def token(self):
-        ctx = _app_ctx_stack.top
         attr = '_oauth_token_{}'.format(self.name)
-        token = getattr(ctx, attr, None)
+        token = g.get(attr)
         if token:
             return token
         if self._fetch_token:
@@ -22,9 +20,8 @@ def token(self):
 
     @token.setter
     def token(self, token):
-        ctx = _app_ctx_stack.top
         attr = '_oauth_token_{}'.format(self.name)
-        setattr(ctx, attr, token)
+        setattr(g, attr, token)
 
     def _get_requested_token(self, *args, **kwargs):
         return self.token

authlib/integrations/flask_oauth1/resource_protector.py

@@ -1,7 +1,6 @@
 import functools
-from flask import json, Response
+from flask import g, json, Response
 from flask import request as _req
-from flask import _app_ctx_stack
 from werkzeug.local import LocalProxy
 from authlib.consts import default_json_headers
 from authlib.oauth1 import ResourceProtector as _ResourceProtector
@@ -86,8 +85,7 @@ def acquire_credential(self):
             _req.form.to_dict(flat=True),
             _req.headers
         )
-        ctx = _app_ctx_stack.top
-        ctx.authlib_server_oauth1_credential = req.credential
+        g.authlib_server_oauth1_credential = req.credential
         return req.credential
 
     def __call__(self, scope=None):
@@ -109,8 +107,7 @@ def decorated(*args, **kwargs):
 
 
 def _get_current_credential():
-    ctx = _app_ctx_stack.top
-    return getattr(ctx, 'authlib_server_oauth1_credential', None)
+    return g.get('authlib_server_oauth1_credential')
 
 
 current_credential = LocalProxy(_get_current_credential)