Method exchange_code

dwave/cloud/auth/flows.py:463–499

(app: RequestCaptureAndRedirectApp)

        success_uri = self._infer_leap_success_uri(self.leap_api_endpoint)

        def exchange_code(app: RequestCaptureAndRedirectApp) -> str:
            # error responses redirect immediately
            if 'error' in app.query:
                app.set_exception(
                    OAuthError(error=app.query['error'],
                               description=app.query.get('error_description')))
                return add_params_to_uri(error_uri, app.query)

            # when code received, exchange it for token
            try:
                # verify state (Cross-Site Request Forgery protection)
                state = app.query.get('state')
                if state != self.state:
                    raise ValueError('State mismatch')

                self.fetch_token(code=app.query.get('code'), state=state)

            except OAuthError as exc:
                # store for main thread
                app.set_exception(exc)

                # redirect to leap error page
                query = dict(error=exc.error, error_description=exc.description,
                             state=app.query.get('state'))
                return add_params_to_uri(error_uri, query)

            except Exception as exc:
                # store for main thread
                app.set_exception(exc)

                # redirect to leap error page
                query = dict(error=type(exc).__name__, error_description=str(exc),
                             state=app.query.get('state'))
                return add_params_to_uri(error_uri, query)

            # redirect to leap success page
            return success_uri

        app = RequestCaptureAndRedirectApp(
            message=self._REDIRECT_DONE_MSG,