appengine.py 文件源码

def _create_flow(self, request_handler):
    """Create the Flow object.

    The Flow is calculated lazily since we don't know where this app is
    running until it receives a request, at which point redirect_uri can be
    calculated and then the Flow object can be constructed.

    Args:
      request_handler: webapp.RequestHandler, the request handler.
    """
    if self.flow is None:
      redirect_uri = request_handler.request.relative_url(
          self._callback_path) # Usually /oauth2callback
      self.flow = OAuth2WebServerFlow(self._client_id, self._client_secret,
                                      self._scope, redirect_uri=redirect_uri,
                                      user_agent=self._user_agent,
                                      auth_uri=self._auth_uri,
                                      token_uri=self._token_uri, **self._kwargs)