public async Task <ActionResult> Get()
        {
            var listOfPollution = _session.Execute("select * from alertPollution where about='Need to be solved' ALLOW FILTERING");
            IList <AlertPollution> pollutions = new List <AlertPollution>();

            foreach (var res in listOfPollution)
            {
                AlertPollution p = new AlertPollution();
                p.SensorId    = res.GetValue <string>("sensorid");
                p.CollectTime = res.GetValue <DateTimeOffset>("collecttime");
                p.SensorData  = res.GetValue <float>("sensordata");
                p.About       = res.GetValue <string>("about");
                pollutions.Add(p);
            }
            return(Ok(pollutions));
        }
 public async Task Solve([FromBody] AlertPollution alertPollution)
 {
     _session.Execute("UPDATE alertPollution SET about='Solved' where sensorid='" + alertPollution.SensorId + "' AND collecttime=" + alertPollution.CollectTime.ToUnixTimeMilliseconds());
 }