def query_request(self, node, end):
        r = requests.post(self.query_uri, data=json.dumps({
            'start': end - 12000,
            'end': end,
            'cf': 'MAX',
            'endpoint_counters': [{
                'endpoint': self.prefix,
                'counter': field + '/service=redisctl&addr=' + node,
            }],
        })).json()[0]['Values']
        if r:
            for i in range(1, len(r)):
                m = r[-i]
                if m['value']:
                    return m['value']
dataset/ETHPy150Open HunanTV/redis-ctl/stats/db.py/Client.query_request/original