TrafficBackgroundService.cs
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using HHECS.BllModel;
using HHECS.DAQShared.Models;
namespace HHECS.DAQServer.Services
{
public class TrafficBackgroundService : BackgroundService
{
private readonly DataCacheService _dataCacheService;
private readonly IFreeSql _freeSql;
private readonly ILogger<TrafficBackgroundService> _logger;
public TrafficBackgroundService(DataCacheService dataCacheService, IFreeSql freeSql, ILogger<TrafficBackgroundService> logger)
{
_dataCacheService = dataCacheService;
_freeSql = freeSql;
_logger = logger;
}
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
DeleteRecord();
var records = new List<TrafficRecord>();
while (!stoppingToken.IsCancellationRequested)
{
try
{
//5秒更新一次
await Task.Delay(5000, stoppingToken);
//这里超过设定值，说明上一次处理失败了
if (records.Count >= 1000)
{
var result1 = AddRecord(records);
if (!result1.Success)
{
continue;
}
//保存成功，则清空
records.Clear();
}
while (!_dataCacheService.TrafficRecords.IsEmpty)
{
_dataCacheService.TrafficRecords.TryDequeue(out var temp);
if (temp == null)
{
continue;
}
records.Add(temp);
}
if (records.Count == 0)
{
continue;
}
var result = AddRecord(records);
if (!result.Success)
{
continue;
}
//保存成功，则清空
records.Clear();
}
catch (Exception ex)
{
_logger.LogError($"[{nameof(TrafficBackgroundService)}]线程异常：{ex.Message}");
}
}
}
/// <summary>
/// 记录到数据库
/// </summary>
/// <param name="records"></param>
/// <returns></returns>
private BllResult AddRecord(IEnumerable<TrafficRecord> records)
{
try
{
var recordGroup = records.GroupBy(x => new
{
x.ClientId,
x.Origin,
x.RequestPath,
x.Method,
x.UserAgent,
x.RemoteIpAddress,
});
using var trafficRecordRepository = _freeSql.GetRepository<TrafficRecord>();
foreach (var item in recordGroup)
{
//按时间分组，30分钟一组
var datetimeGroup = item.GroupBy(x =>
{
var time = x.Created.Value;
return new DateTime(time.Year, time.Month, time.Day, time.Hour, time.Minute / 30 * 30, 0);
});
foreach (var item2 in datetimeGroup)
{
var startTime = item2.Key;
var endTime = startTime.AddMinutes(30);
var lastRecord = trafficRecordRepository.Where(x => x.ClientId == item.Key.ClientId
&& x.Origin == item.Key.Origin
&& x.RequestPath == item.Key.RequestPath
&& x.Method == item.Key.Method
&& x.UserAgent == item.Key.UserAgent
&& x.RemoteIpAddress == item.Key.RemoteIpAddress
&& x.Created >= startTime && x.Updated < endTime).First();
//不存在，则新增
if (lastRecord == null)
{
lastRecord = new TrafficRecord
{
ClientId = item.Key.ClientId,
Origin = item.Key.Origin,
RequestPath = item.Key.RequestPath,
Method = item.Key.Method,
UserAgent = item.Key.UserAgent,
RemoteIpAddress = item.Key.RemoteIpAddress,
RequestSize = item2.Sum(x => x.RequestSize),
ResponseSize = item2.Sum(x => x.ResponseSize),
Created = item2.Min(x => x.Created),
Updated = item2.Max(x => x.Created),
};
trafficRecordRepository.Insert(lastRecord);
continue;
}
//存在，则更新
trafficRecordRepository.Attach(lastRecord);
lastRecord.RequestSize += item2.Sum(x => x.RequestSize);
lastRecord.ResponseSize += item2.Sum(x => x.ResponseSize);
lastRecord.Updated = item2.Max(x => x.Created);
trafficRecordRepository.Update(lastRecord);
}
}
return BllResultFactory.Success();
}
catch (Exception ex)
{
_logger.LogError($"[{nameof(TrafficBackgroundService)}]保存记录失败：{ex.Message}");
return BllResultFactory.Error(ex.Message);
}
}
private BllResult DeleteRecord()
{
try
{
_freeSql.Delete<TrafficRecord>().Where(x => x.Created < DateTime.Today.AddMonths(-3)).ExecuteAffrows();
return BllResultFactory.Success();
}
catch (Exception ex)
{
_logger.LogError($"[{nameof(TrafficBackgroundService)}]删除记录失败：{ex.Message}");
return BllResultFactory.Error(ex.Message);
}
}
}
}