133 lines
4.6 KiB
Python
Executable File
133 lines
4.6 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# Copyright 2007 Google Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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"""Starting template for Google App Engine applications.
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Use this project as a starting point if you are just beginning to build a Google
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App Engine project. Remember to fill in the OAuth 2.0 client_id, client_secret
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and the developer key, all of which can be obtained from the Developer Console
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<https://code.google.com/apis/console/>
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"""
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__author__ = 'jcgregorio@google.com (Joe Gregorio)'
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import httplib2
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import logging
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import os
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import pickle
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from apiclient.discovery import build
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from oauth2client.appengine import CredentialsProperty
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from oauth2client.appengine import StorageByKeyName
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from oauth2client.client import OAuth2WebServerFlow
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from google.appengine.api import memcache
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from google.appengine.api import users
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from google.appengine.ext import db
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from google.appengine.ext import webapp
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from google.appengine.ext.webapp import template
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from google.appengine.ext.webapp import util
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from google.appengine.ext.webapp.util import login_required
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# Set up a Flow object to be used if we need to authenticate. This
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# sample uses OAuth 2.0, and we set up the OAuth2WebServerFlow with
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# the information it needs to authenticate. Note that it is called
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# the Web Server Flow, but it can also handle the flow for native
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# applications <http://code.google.com/apis/accounts/docs/OAuth2.html#IA>
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# The client_id and client_secret are copied from the Identity tab on
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# the Google APIs Console <http://code.google.com/apis/console>
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FLOW = OAuth2WebServerFlow(
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client_id='<client id goes here>',
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client_secret='<client secret goes here>',
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scope='https://www.googleapis.com/auth/buzz',
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user_agent='my-sample-app/1.0')
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class Credentials(db.Model):
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credentials = CredentialsProperty()
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class MainHandler(webapp.RequestHandler):
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@login_required
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def get(self):
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user = users.get_current_user()
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credentials = StorageByKeyName(
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Credentials, user.user_id(), 'credentials').get()
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if not credentials or credentials.invalid:
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return begin_oauth_flow(self, user)
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http = credentials.authorize(httplib2.Http())
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# Build a service object for interacting with the API. Visit
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# the Google APIs Console <http://code.google.com/apis/console>
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# to get a developerKey for your own application.
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service = build("buzz", "v1", http=http,
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developerKey="<developer key goes here>")
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followers = service.people().list(
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userId='@me', groupId='@followers').execute()
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text = 'Hello, you have %s followers!' % followers['totalResults']
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path = os.path.join(os.path.dirname(__file__), 'welcome.html')
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self.response.out.write(template.render(path, {'text': text }))
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def begin_oauth_flow(request_handler, user):
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callback = request_handler.request.relative_url('/auth_return')
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authorize_url = FLOW.step1_get_authorize_url(callback)
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# Here we are using memcache to store the flow temporarily while the user
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# is directed to authorize our service. You could also store the flow
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# in the datastore depending on your utilization of memcache, just remember
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# in that case to clean up the flow after you are done with it.
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memcache.set(user.user_id(), pickle.dumps(FLOW))
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request_handler.redirect(authorize_url)
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class OAuthHandler(webapp.RequestHandler):
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@login_required
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def get(self):
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user = users.get_current_user()
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flow = pickle.loads(memcache.get(user.user_id()))
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# This code should be ammended with application specific error
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# handling. The following cases should be considered:
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# 1. What if the flow doesn't exist in memcache? Or is corrupt?
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# 2. What if the step2_exchange fails?
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if flow:
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credentials = flow.step2_exchange(self.request.params)
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StorageByKeyName(
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Credentials, user.user_id(), 'credentials').put(credentials)
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self.redirect("/")
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else:
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# Add application specific error handling here.
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pass
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def main():
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application = webapp.WSGIApplication(
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[
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('/', MainHandler),
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('/auth_return', OAuthHandler)
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],
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debug=True)
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util.run_wsgi_app(application)
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if __name__ == '__main__':
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main()
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