def get_credentials(self, auth_token, auth_verifier=""):
"""Gets credentials
Exchanges the auth token for an access token and returns it for storage elsewhere.
"""
auth_token = urlunquote(auth_token)
auth_verifier = urlunquote(auth_verifier)
auth_secret = memcache.get(self._get_memcache_auth_key(auth_token))
if not auth_secret:
result = AuthToken.gql("""
WHERE
service = :1 AND
token = :2
LIMIT
1
""", self.service_name, auth_token).get()
if not result:
logging.error("The auth token %s was not found in our db" % auth_token)
raise Exception, "Could not find AuthToken in database"
else:
auth_secret = result.secret
response = self.make_request(self.access_url,
token=auth_token,
secret=auth_secret,
additional_params={"oauth_verifier":
auth_verifier})
# Extract the access token/secret from the response.
result = self._extract_credentials(response)
return result
