Twitter OAuth on GoogleAppEngine
Google App EngineでTwitter OAuthを使う。
自分のタイムラインを取得してtweetできるまでのサンプル。
参考
tweepyでtwitterの3-legged OAuth認証を試してみた(GoogleAppEngine)
コードのなかで使用しているsimple_cookieは
Google Cookbook – Google App Engine A simple Cookie class のもの。
注意する点は
Twitter application settingでcallback URLを正しく設定すること。
callback URLに127.0.0.1を指定しているからかもしれないけど、なにも入力しないと
TweepError: HTTP Error 401: Unauthorized になる。
tweepy
はapp engineのディレクトリにモジュールのディレクトリをコピーして使った。
以下サンプルコードと実行
~/oauth_twitter/oauth_twitter.py
#coding:utf-8
import logging
import uuid
import tweepy
from google.appengine.ext import webapp
from google.appengine.ext.webapp.util import run_wsgi_app
#from django.utils import simplejson
from google.appengine.ext import db
from google.appengine.api import memcache
from simple_cookie import Cookies
CONSUMER_KEY = 'xxxxxxxxxxxxxxxxxxxxxxx'
CONSUMER_SECRET = 'xxxxxxxxxxxxxxxxxxxxxxxxxx'
CALLBACK_URL = 'http://127.0.0.1:8080/oauth/callback'
SESSION_EXPIRE = 300
log = logging.getLogger(__file__)
class RequestToken(db.Model):
token = db.StringProperty()
secret = db.StringProperty()
class Home(webapp.RequestHandler):
def get(self):
cookie = Cookies(self, max_age=SESSION_EXPIRE)
if not 'sid' in cookie:
cookie['sid'] = str(uuid.uuid4()) # start a session
(timeline, username) = (None, None)
access_token = memcache.get(cookie['sid'])
log.info('access_token....%s' % access_token)
if access_token:
self.response.headers['Content-Type'] = 'text/html'
auth = tweepy.OAuthHandler(CONSUMER_KEY, CONSUMER_SECRET)
auth.set_access_token(access_token.key, access_token.secret)
username = auth.get_username()
log.info('username....%s' % username)
api = tweepy.API(auth_handler=auth)
timeline = api.home_timeline(count=10)
html = '''
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>test</title>
</head>
<body>
<form action="/" method="POST">
<input type="text" name="status"/>
<input type="submit"/>
</form>'''
self.response.out.write(html)
self.response.out.write('<p>'.join([t.text for t in timeline]))
self.response.out.write('</body></html>')
else:
self.redirect('/oauth')
def post(self):
cookie = Cookies(self)
if 'sid' in cookie:
access_token = memcache.get(cookie['sid'])
if access_token:
auth = tweepy.OAuthHandler(CONSUMER_KEY, CONSUMER_SECRET)
auth.set_access_token(access_token.key, access_token.secret)
api = tweepy.API(auth_handler=auth)
api.update_status(status=self.request.get('status'))
self.redirect('/')
# get an twiiter authorize url and redirect to it.
class OAuth(webapp.RequestHandler):
def get(self):
auth = tweepy.OAuthHandler(CONSUMER_KEY,
CONSUMER_SECRET,
CALLBACK_URL)
auth_url = auth.get_authorization_url()
request_token = RequestToken(
token=auth.request_token.key,
secret=auth.request_token.secret)
request_token.put()
self.redirect(auth_url)
class OAuthCallBack(webapp.RequestHandler):
def get(self):
request_token_key = self.request.get("oauth_token")
request_verifier = self.request.get('oauth_verifier')
auth = tweepy.OAuthHandler(CONSUMER_KEY, CONSUMER_SECRET)
request_token = RequestToken.gql("WHERE token=:1",
request_token_key).get()
auth.set_request_token(request_token.token,
request_token.secret)
access_token = auth.get_access_token(request_verifier)
log.info(access_token.key)
log.info(access_token.secret)
cookie = Cookies(self)
memcache.set(cookie['sid'], access_token, SESSION_EXPIRE)
self.redirect('/')
class Logout(webapp.RequestHandler):
def get(self):
cookie = Cookies(self)
if 'sid' in cookie:
memcache.delete(cookie['sid'])
del cookie['sid']
self.redirect('/')
routing = [('/', Home),
('/oauth', OAuth),
('/oauth/callback', OAuthCallBack),
('/logout', Logout),
]
application = webapp.WSGIApplication(
routing,
debug=True)
def main():
run_wsgi_app(application)
if __name__ == '__main__':
main()
~/oauth_twitter/app.yaml
application: oauthtwitter # _ はapplicationの識別子として使えないので注意 version: 1 runtime: python api_version: 1 handlers: - url: /.* script: oauth_twitter.py
$ cd ~/ $ dev_appserver.py oauth_twitter
http://127.0.0.1:8080にアクセスするとtwitterのoauthのページ
許可するとhttp://127.0.0.1:8080/oauth/callbackにリダイレクト
access_tokenを設定して、http://127.0.0.1:8080/にリダイレクト
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