116 lines
4.8 KiB
C#
116 lines
4.8 KiB
C#
using Model.Dto.Inspection;
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using Model.Entity.Inspection;
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using ORM;
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using Service.Interface;
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namespace WebAPI.Services
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{
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/// <summary>
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/// 温度箱数据模拟器（临时用）
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/// 每秒为 100 台环境箱生成一条模拟温湿度数据并批量写入数据库，
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/// 真实设备接入后删除此类及 Program.cs 中的注册即可
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/// </summary>
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public class TemperatureBoxSimulator : BackgroundService
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{
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private const int DeviceCount = 100;
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private const double AlarmTemp = 80.0; // 高温报警阈值
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private static readonly Random Rnd = new();
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// 每台设备维护一份模拟状态（随机游走需要基于上一次的值）
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private class BoxState
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{
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public double Temperature = Rnd.Next(20, 60);
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public double Humidity = Rnd.Next(30, 70);
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}
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private readonly Dictionary<string, BoxState> _states = new();
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private readonly IServiceScopeFactory _scopeFactory;
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public TemperatureBoxSimulator(IServiceScopeFactory scopeFactory)
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{
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_scopeFactory = scopeFactory;
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for (int i = 1; i <= DeviceCount; i++)
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{
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_states[$"BOX-{i:D3}"] = new BoxState();
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}
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}
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protected override async Task ExecuteAsync(CancellationToken stoppingToken)
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{
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while (!stoppingToken.IsCancellationRequested)
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{
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try
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{
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var now = DateTime.Now;
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var batch = new List<TemperatureBoxDataEntity>(DeviceCount);
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var alarmDevices = new List<(string Code, double Temp)>();
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foreach (var kv in _states)
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{
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var s = kv.Value;
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// 随机游走，让曲线平滑连续
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s.Temperature = Math.Clamp(s.Temperature + (Rnd.NextDouble() - 0.48) * 2, 15, 95);
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s.Humidity = Math.Clamp(s.Humidity + (Rnd.NextDouble() - 0.5) * 3, 20, 90);
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bool alarm = s.Temperature >= AlarmTemp;
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if (alarm)
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{
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alarmDevices.Add((kv.Key, Math.Round(s.Temperature, 1)));
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}
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batch.Add(new TemperatureBoxDataEntity
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{
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DeviceCode = kv.Key,
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DeviceType = "TemperatureBox",
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DeviceTemperature = Math.Round(s.Temperature, 1),
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DeviceHumidity = Math.Round(s.Humidity, 1),
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Status = alarm ? "报警" : "运行",
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AlarmInfo = alarm ? "温度超限报警" : "",
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CreateTime = now
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});
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}
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// 批量插入
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await SqlSugarContext.DbContext.Insertable(batch).ExecuteCommandAsync();
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// 报警设备上报告警中心（告警中心内部有 5 分钟合并窗口，不会每秒重复建告警）
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if (alarmDevices.Count > 0)
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{
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// 单例 HostedService 不能直接注入 Scoped 服务，按批次创建作用域解析
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using var scope = _scopeFactory.CreateScope();
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var alertCenter = scope.ServiceProvider.GetRequiredService<IAlertCenterService>();
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foreach (var (code, temp) in alarmDevices)
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{
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await alertCenter.RaiseAsync(new AlertRaiseDto
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{
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Source = AlertSourceEnum.Collection,
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DeviceCode = code,
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DeviceName = $"温度箱 {code}",
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DeviceType = "TemperatureBox",
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Metric = "Temperature",
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AlertType = AlertTypeEnum.ThresholdExceed,
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AlertLevel = AlertLevelEnum.Urgent,
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CurrentValue = temp,
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ThresholdValue = AlarmTemp,
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Content = $"温度箱 {code} 温度超限：当前 {temp}℃ ≥ 报警阈值 {AlarmTemp}℃"
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});
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}
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}
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}
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catch (Exception ex)
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{
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Console.WriteLine($"[温度箱模拟器] 写入失败: {ex.Message}");
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}
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try
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{
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await Task.Delay(1000, stoppingToken);
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}
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catch (TaskCanceledException)
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{
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break;
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}
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}
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}
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}
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}
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