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HTTPError 401 with Google Slides API & OAuth2 on App Engine

I'm trying to use the Google Slides API on Google App Engine, and despite using the Google code samples (specifically for OAuth2 & the Slides API on App Engine), I'm running into problems.
Here is my App Engine code, with unnecessary cruft removed (everything's in main.app). What I'm doing is trying to posting a string from an HTML form and then build a blank presentation. I've already used the Slides API with a simple script that I prototyped; I'm now trying to make this self-serve via an App Engine app, but it's the change in authentication that's tripping me up.
from googleapiclient import discovery
from oauth2client import client
from oauth2client.contrib import appengine
from google.appengine.api import memcache
CLIENT_SECRETS = os.path.join(os.path.dirname(__file__), 'client_secrets.json')
MISSING_CLIENT_SECRETS_MESSAGE = """[omitted]""" % CLIENT_SECRETS
http = httplib2.Http()
service = discovery.build('slides', 'v1', http=http)
decorator = appengine.OAuth2DecoratorFromClientSecrets(
CLIENT_SECRETS,
scope='https://www.googleapis.com/auth/presentations https://www.googleapis.com/auth/drive',
message=MISSING_CLIENT_SECRETS_MESSAGE)
class SlideBuilder(webapp2.RequestHandler):
#decorator.oauth_required
def post(self):
programslug = self.request.get('programid')
presoname = str(programslug) + ' Mentors'
presentationbody = {
'title': presoname
}
presentation = service.presentations().create(body=presentationbody).execute()
I want to point out that I downloaded the most recent client_secrets.json directly from the API console, so that should match up correctly for CLIENT_SECRETS.
The error I'm getting (on dev server; but it's also on the live app) is this:
Traceback (most recent call last):
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 1535, in __call__
rv = self.handle_exception(request, response, e)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 1529, in __call__
rv = self.router.dispatch(request, response)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 1278, in default_dispatcher
return route.handler_adapter(request, response)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 1102, in __call__
return handler.dispatch()
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 572, in dispatch
return self.handle_exception(e, self.app.debug)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 570, in dispatch
return method(*args, **kwargs)
File "/Users/jedc/pm-tools/oauth2client/contrib/appengine.py", line 644, in check_oauth
resp = method(request_handler, *args, **kwargs)
File "/Users/jedc/pm-tools/main.py", line 113, in post
presentation = service.presentations().create(body=presentationbody).execute()
File "/Users/jedc/pm-tools/oauth2client/_helpers.py", line 133, in positional_wrapper
return wrapped(*args, **kwargs)
File "/Users/jedc/pm-tools/googleapiclient/http.py", line 840, in execute
raise HttpError(resp, content, uri=self.uri)
HttpError: <HttpError 401 when requesting https://slides.googleapis.com/v1/presentations?alt=json returned "Request is missing required authentication credential. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.">
It feels like there's something subtle but dumb that I'm doing here. I'd appreciate any help or pointers to figure out what that is!

This error happening because your http is not authorized with the credentials.
To authorize the http with the credentials you should use the decorator.
decorator = appengine.OAuth2DecoratorFromClientSecrets(
CLIENT_SECRETS,
scope='https://www.googleapis.com/auth/presentations https://www.googleapis.com/auth/drive',
message=MISSING_CLIENT_SECRETS_MESSAGE)
http = decorator.http()
service = discovery.build('slides', 'v1', http=http)
This will fix your problem.
For further reference read this app engine decorators documentation from Google

Google App Engine + Google Drive cache error

I don't know why my project show the next cookie error. Could someone help me?
PATH
->test
->lib
->public
->templates
- app.yaml
- main.py
- client_secrets.json
- session-secret (python -c "import os;print os.urandom(64)" > session.secret)
When I use my App Engine Launcher (release: "1.7.5") and check out my localhost web page
I chose my Google account to add permissions in accounts.google.com/AccountChooser?service....... (redirect) and then accept conditions of the scopes
The log console shows the next error:
Traceback (most recent call last):
File "C:\Program Files\Google\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 1535, in __call__
rv = self.handle_exception(request, response, e)
File "C:\Program Files\Google\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 1529, in __call__
rv = self.router.dispatch(request, response)
File "C:\Program Files\Google\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 1278, in default_dispatcher
return route.handler_adapter(request, response)
File "C:\Program Files\Google\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 1102, in __call__
return handler.dispatch()
File "C:\Program Files\Google\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 572, in dispatch
return self.handle_exception(e, self.app.debug)
File "C:\Program Files\Google\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 570, in dispatch
return method(*args, **kwargs)
File "C:\Program Files\Google\google_appengine\pruebasDocs\main.py", line 320, in get
creds = self.GetCodeCredentials()
File "C:\Program Files\Google\google_appengine\pruebasDocs\main.py", line 194, in GetCodeCredentials
session.set_secure_cookie(name='userid', value=userid)
File "lib\sessions.py", line 160, in set_secure_cookie
self.set_cookie(name, value, expires_days=expires_days, **kwargs)
File "lib\sessions.py", line 141, in set_cookie
self.response.headers._headers.append(('Set-Cookie', str(vals.OutputString(None))))
**AttributeError: ResponseHeaders instance has no attribute '_headers'**
lo.....t:8080/?code=4/00VfZ4DJ8d0P99v1kwn0yjBofcbq.gn6ceL8RBx0XYKs_1NgQtmXj_6WohwI
MAIN.PY
def GetCodeCredentials(self):
# Other frameworks use different API to get a query parameter.
code = self.request.get('code')
if not code:
# returns None to indicate that no code was passed from Google Drive.
return None
# Auth flow is a controller that is loaded with the client information,
# including client_id, client_secret, redirect_uri etc
oauth_flow = self.CreateOAuthFlow()
# Perform the exchange of the code. If there is a failure with exchanging
# the code, return None.
try:
creds = oauth_flow.step2_exchange(code)
except FlowExchangeError:
return None
# Create an API service that can use the userinfo API. Authorize it with our
# credentials that we gained from the code exchange.
users_service = CreateService('oauth2', 'v2', creds)
# Make a call against the userinfo service to retrieve the user's information.
# In this case we are interested in the user's "id" field.
userid = users_service.userinfo().get().execute().get('id')
# Store the user id in the user's cookie-based session.
session = sessions.LilCookies(self, SESSION_SECRET)
session.set_secure_cookie(name='userid', value=userid)
SESSIONS.PY
# output all their cookies to the headers at once before a response flush.
for vals in new_cookie.values():
self.response.headers._headers.append(('Set-Cookie', vals.OutputString(None)))

Error in listing the google drive files

I am trying to list all my google drive files in an application using google app engine. I am using the oauth protocol to access the drive files. On clicking the link to list the files, i get an error, which is listed below.
Please help. Thanks in advance.
Here is my program
#!/usr/bin/env python
#
# Copyright 2013 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
"""Starting template for Google App Engine applications.
Use this project as a starting point if you are just beginning to build a Google
App Engine project. Remember to download the OAuth 2.0 client secrets which can
be obtained from the Developer Console <https://code.google.com/apis/console/>
and save them as 'client_secrets.json' in the project directory.
"""
import httplib2
import logging
import os
from google.appengine.api import users
from apiclient import discovery
from oauth2client import appengine
from oauth2client import client
from google.appengine.api import memcache
import webapp2
import jinja2
JINJA_ENVIRONMENT = jinja2.Environment(
loader=jinja2.FileSystemLoader(os.path.dirname(__file__)),
autoescape=True,
extensions=['jinja2.ext.autoescape'])
# CLIENT_SECRETS, name of a file containing the OAuth 2.0 information for this
# application, including client_id and client_secret, which are found
# on the API Access tab on the Google APIs
# Console <http://code.google.com/apis/console>
CLIENT_SECRETS = os.path.join(os.path.dirname(__file__), 'client_secrets.json')
# Helpful message to display in the browser if the CLIENT_SECRETS file
# is missing.
MISSING_CLIENT_SECRETS_MESSAGE = """
<h1>Warning: Please configure OAuth 2.0</h1>
<p>
To make this sample run you will need to populate the client_secrets.json file
found at:
</p>
<p>
<code>%s</code>.
</p>
<p>with information found on the APIs Console.
</p>
""" % CLIENT_SECRETS
http = httplib2.Http(memcache)
service = discovery.build('drive', 'v2', http=http)
decorator = appengine.oauth2decorator_from_clientsecrets(
CLIENT_SECRETS,
scope=[
'https://www.googleapis.com/auth/userinfo.email',
'https://www.googleapis.com/auth/userinfo.profile',
'https://www.googleapis.com/auth/drive',
'https://www.googleapis.com/auth/drive.appdata',
'https://www.googleapis.com/auth/drive.apps.readonly',
'https://www.googleapis.com/auth/drive.file',
'https://www.googleapis.com/auth/drive.metadata.readonly',
'https://www.googleapis.com/auth/drive.readonly',
'https://www.googleapis.com/auth/drive.scripts',
],
message=MISSING_CLIENT_SECRETS_MESSAGE)
class MainHandler(webapp2.RequestHandler):
#decorator.oauth_aware
def get(self):
user= users.get_current_user()
if user:
variables = {
'user': users.get_current_user(),
'url': decorator.authorize_url(),
'has_credentials': decorator.has_credentials()
}
template = JINJA_ENVIRONMENT.get_template('main.html')
self.response.write(template.render(variables))
else:
self.response.write(users.create_login_url("/"))
class listFile(webapp2.RequestHandler):
#decorator.oauth_aware
def get(self):
if not decorator.has_credentials():
self.reponse.write("<a href='")
self.reponse.write(decorator.authorize_url())
self.response.write(">Authorize</a>")
else:
a=service.files().list().execute()
self.response.write(a)
app = webapp2.WSGIApplication(
[
('/', MainHandler),
('/list', listFile),
(decorator.callback_path, decorator.callback_handler()),
],
debug=True)
The error i get is
Internal Server Error
The server has either erred or is incapable of performing the requested operation.
Traceback (most recent call last):
File "/base/data/home/runtimes/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py", line 1535, in __call__
rv = self.handle_exception(request, response, e)
File "/base/data/home/runtimes/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py", line 1529, in __call__
rv = self.router.dispatch(request, response)
File "/base/data/home/runtimes/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py", line 1278, in default_dispatcher
return route.handler_adapter(request, response)
File "/base/data/home/runtimes/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py", line 1102, in __call__
return handler.dispatch()
File "/base/data/home/runtimes/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py", line 572, in dispatch
return self.handle_exception(e, self.app.debug)
File "/base/data/home/runtimes/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py", line 570, in dispatch
return method(*args, **kwargs)
File "/base/data/home/apps/s~test-ak2/1.371630947154576708/oauth2client/appengine.py", line 777, in setup_oauth
resp = method(request_handler, *args, **kwargs)
File "/base/data/home/apps/s~test-ak2/1.371630947154576708/main.py", line 104, in get
a=service.files().list().execute()
File "/base/data/home/apps/s~test-ak2/1.371630947154576708/oauth2client/util.py", line 132, in positional_wrapper
return wrapped(*args, **kwargs)
File "/base/data/home/apps/s~test-ak2/1.371630947154576708/apiclient/http.py", line 723, in execute
raise HttpError(resp, content, uri=self.uri)
HttpError: <HttpError 401 when requesting https://www.googleapis.com/drive/v2/files?alt=json returned "Login Required">

When you are requesting the file list:
service.files().list().execute()
the client library needs to know how to authenticate the HTTP request. The way it does this is is uses a special HTTP object that knows how to add the right credentials to the request.
This can be set either at initialization of the service, or it can be specified when you are calling execute().
In your case you are specifying it when you initialize the service object:
http = httplib2.Http(memcache)
service = discovery.build('drive', 'v2', http=http)
That's fine - but when you use the service object, it doesn't know about the decorator, so what you need to do is get an HTTP object from the decorator:
service.files().list().execute(http=decorator.http())
and pass that to the execute() method. This will ensure the credentials associated with the logged in user are added to the request to the Drive API.

GAESessions (Python) - "AttributeError: 'thread._local' object has no attribute 'current_session'."

So I've been trying to implement the Janrain Engage plugin to the application I'm working on (Google App Engine (Python 2.7)), using GAESessions as the sessions library.
Following the instructions given on the GAESessions page, I created the "gaesessions" folder (containing "__init__.py") as well as "appengine_config.py" in my application's root directory, as well as the relevant files to process the plugin.
Attempting to login via Janrain, however, threw me a 500 error and gave me this traceback in the GAE logs:
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'
I have searched through the other posts regarding the "get_current_session()" issue, but they seem to be referencing 'local' instead of 'thread._local'.
Any ideas on what's going on here? Thanks in advance!
========
{root folder}/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
========

{root folder}/appengine_config.py Is the file appengine_config.py in the root location?
aaps/app.yaml
/main.py
/appengine_config.py
/gaesessions #folder
Can look a basic tutorial on gaesessions

Import Error for User Model

I have this piece of code which is running perfectly on localhost but throws up this obscure error on GAE:
import_string() failed for 'webapp2_extras.appengine.auth.models.User' . Possible reasons are: - missing __init__.py in a package; - package or module
My import statements:
from webapp2_extras import auth
from webapp2_extras import sessions
from webapp2_extras.auth import InvalidAuthIdError
from webapp2_extras.auth import InvalidPasswordError
Usage of auth's user model:
user = self.auth.store.user_model.create_user(username, password_raw = password, email = email)
if not user[0]: #returns a tuple with [boolean, user_info]
return 'Create user error'
else:
self.set_flash("Thank you for registering. Please login!")
self.redirect(self.auth_config['login_url'])
Full code
UPDATE (Full stack trace)
import_string() failed for 'webapp2_extras.appengine.auth.models.User'. Possible reasons are:
- missing __init__.py in a package;
- package or module path not included in sys.path;
- duplicated package or module name taking precedence in sys.path;
- missing module, class, function or variable;
Original exception:
ImportError: No module named ndb
Debugged import:
- 'webapp2_extras' found in '/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2_extras/__init__.pyc'.
- 'webapp2_extras.appengine' found in '/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2_extras/appengine/__init__.pyc'.
- 'webapp2_extras.appengine.auth' found in '/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2_extras/appengine/auth/__init__.pyc'.
- 'webapp2_extras.appengine.auth.models' not found.
Traceback (most recent call last):
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 1511, in __call__
rv = self.handle_exception(request, response, e)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 1505, in __call__
rv = self.router.dispatch(request, response)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 1253, in default_dispatcher
return route.handler_adapter(request, response)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 1077, in __call__
return handler.dispatch()
File "/base/data/home/apps/s~webapp-auth/1.358936463581927371/main.py", line 34, in dispatch
response = super(BaseHandler, self).dispatch()
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 547, in dispatch
return self.handle_exception(e, self.app.debug)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 545, in dispatch
return method(*args, **kwargs)
File "/base/data/home/apps/s~webapp-auth/1.358936463581927371/main.py", line 127, in post
user = self.auth.store.user_model.create_user(username, password_raw = password, email = email)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 701, in __get__
value = self.func(obj)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2_extras/auth.py", line 131, in user_model
cls = self.config['user_model'] = webapp2.import_string(cls)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 1824, in import_string
return getattr(__import__(module, None, None, [obj]), obj)
File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2_extras/appengine/auth/models.py", line 13, in <module>
from ndb import model

Look similar to this issue which was already fixed by webapp 2.5.1
Make sure you import the latest version of webapp2, by adding those line to your app.yaml file:
libraries:
- name: webapp2
version: latest
As a workaround you can add the following lines to your application:
import sys
from google.appengine.ext import ndb
sys.modules['ndb'] = ndb