サーバー間の JSON API シナリオで oauth2 access_token を作成しようとしています。しかし、invalid_grant エラーで失敗しました。助けてください。
from oauth2client.client import SignedJwtAssertionCredentials
KEY_FILE = 'xxxxxxxxxxxx-privatekey.p12'
with open(KEY_FILE, 'r') as fd:
key = fd.read()
SERVICE_ACCOUNT_EMAIL = 'xxxxxx.apps.googleusercontent.com'
credentials = SignedJwtAssertionCredentials(SERVICE_ACCOUNT_EMAIL, key,
scope="https://www.googleapis.com/auth/datastore https://www.googleapis.com/auth/userinfo.email",
token_uri='https://accounts.google.com/o/oauth2/token')
assertion = credentials._generate_assertion()
h = httplib2.Http()
credentials._do_refresh_request(h.request)
そして私は得た
Traceback (most recent call last):
File "/Users/pahud/Projects/oauth2client/x.py", line 24, in <module>
credentials._do_refresh_request(h.request)
File "/Users/pahud/Projects/oauth2client/oauth2client/client.py", line 710, in _do_refresh_request
raise AccessTokenRefreshError(error_msg)
oauth2client.client.AccessTokenRefreshError: invalid_grant
[Finished in 0.7s with exit code 1]