WTM+InfluxDB时序数据库数据查询并放到DataTable中

    public override   IOrderedQueryable<HParameterMonitoring_View> GetSearchQuery()
        {
           var list= GetInfluxDBData().Result;
           return  list.AsQueryable().OrderBy(x=>x.HParameterMonitoring_MachineCode);
        }

        private async Task<List<HParameterMonitoring_View>> GetInfluxDBData()
        {
            StringBuilder query = new StringBuilder();
            StringBuilder queryCount = new StringBuilder();
            string machineId = Searcher.SelectedMachineId.ToString();
            var dicParm = DC.Set<CMachParm>().CheckContain(Searcher.HPTHAlarmParameterIds, x => x.ID).ToDictionary(s => s.NameEN, v => v);
            // List<string> paraList = dicParm.Keys.ToList();
            List<ParamName> paraList = new List<ParamName>();
            foreach (var para in dicParm)
            {
                ParamName obj = new ParamName()
                {
                    Name_Cn = para.Value.NameCN,
                    Name_En = para.Value.NameEN,
                    Unit = para.Value.Unit,
                };
                paraList.Add(obj);

            };
            int queryStart = DateHelper.ConvertDateTimeInt(Searcher.DateStart ?? DateTime.Now.AddMinutes(-5));
            int queryEnd = DateHelper.ConvertDateTimeInt(Searcher.DateEnd ?? DateTime.Now);

            List<HParameterMonitoring_View> objList = new List<HParameterMonitoring_View>();

            
            using (var client = InfluxDBClientFactory.Create(Wtm.ConfigInfo.AppSettings["InfluxDBUrl"], Wtm.ConfigInfo.AppSettings["InfluxDBToken"].ToCharArray()))
            {
                client.EnableGzip();//此方法将数据压缩，就不会导致超时的发生
                //bool IsGzipEnabled=client.IsGzipEnabled();
                query.Append($"from(bucket:"{Wtm.ConfigInfo.AppSettings["InfluxDBBucket"]}")");
                query.Append($@"|> range(start: {queryStart},stop:{queryEnd})");
                query.Append("|> filter(fn: (r) => r["_measurement"] == "cncinfo")");
                query.Append($"|> filter(fn: (r) => r["machineId"] == "{machineId}")");
                if (paraList.Count > 0)
                {
                    query.Append($"|> filter(fn: (r) => 1!=1");//or  就要是false 因为false或什么 就是什么
                    foreach (var para in paraList)
                    {
                        query.Append($" or r["_field"] == "{para.Name_En}"");//相当于select那些列
                    }
                    query.Append(")");
                }


               
                var fluxTable = await client.GetQueryApi().QueryAsync(query.ToString(), Wtm.ConfigInfo.AppSettings["InfluxDBOrg"],cancellationToken:System.Threading.CancellationToken.None);

                //int z = (Searcher.Page - 1) * Searcher.Limit;
                for (int i = 0; i < fluxTable.Count; i++)
                {//i是参数
                    for (int j = 0; j < fluxTable[i].Records.Count; j++)
                    {//j是数据
                        string time = fluxTable[i].Records[j].GetTimeInDateTime()?.AddHours(8).ToString("yyyy-MM-dd HH:mm:ss");
                        string fieldOri = fluxTable[i].Records[j].GetField();
                        Dictionary<string, object> values = fluxTable[i].Records[j].Values;
                        string NameCn = "";
                        string Unit = "";
                        foreach (var item in paraList)
                        {
                            if (item.Name_En == fieldOri)
                            {
                                NameCn = item.Name_Cn;
                                Unit = item.Unit;
                            }

                        };
                        HParameterMonitoring_View obj = new HParameterMonitoring_View()
                        {
                            HParameterMonitoring_MachineCode = values["eqname"]?.ToString(),
                            HParameterMonitoring_Param = fieldOri,
                            HParameterMonitoring_ParamCn = NameCn,
                            HParameterMonitoring_Value = values["_value"]?.ToString() + Unit,
                            HParameterMonitoring_UpdateTime = time,
                        };
                        objList.Add(obj);

                    }
                }
            };
            return objList;
        }