http.py 文件源码

def json_request(self, method, url, **kwargs):
        kwargs.setdefault('headers', {})
        kwargs['headers'].setdefault('Content-Type', 'application/json')
        kwargs['headers'].setdefault('Accept', 'application/json')

        if 'body' in kwargs:
            kwargs['body'] = jsonutils.dump_as_bytes(kwargs['body'])

        resp, body_iter = self._http_request(url, method, **kwargs)
        content_type = resp.headers.get('Content-Type')

        if (resp.status_code in (
                http_client.NO_CONTENT,
                http_client.RESET_CONTENT) or content_type is None):
            return resp, list()

        if 'application/json' in content_type:
            body = ''.join([chunk for chunk in body_iter])
            try:
                body = jsonutils.loads(body)
            except ValueError:
                LOG.error(_LE('Could not decode response body as JSON'))
        else:
            body = None

        return resp, body