116 lines
5.2 KiB
C#
116 lines
5.2 KiB
C#
using Model;
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using Model.Dto.Inspection;
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using Model.Entity.Inspection;
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using Model.Mapper;
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using ORM;
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using Service.Interface;
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using SqlSugar;
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using System;
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using System.Threading.Tasks;
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namespace Service.Implement
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{
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/// <summary>
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/// 告警中心服务实现（全系统统一告警上报入口）
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/// 职责：默认内容生成 → 去重合并（防告警风暴）→ 落库 → 规则触发计数 → 通知队列入队
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/// </summary>
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public class AlertCenterService : IAlertCenterService
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{
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/// <summary>
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/// 合并窗口（分钟）：窗口内同设备+同测点+同类型的活跃告警不新建记录，只累加触发次数。
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/// 后续可迁移到系统参数配置模块动态调整
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/// </summary>
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private const int MergeWindowMinutes = 5;
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/// <summary>
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/// 上报一条告警
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/// </summary>
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public async Task<Result<string>> RaiseAsync(AlertRaiseDto dto)
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{
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if (dto == null)
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{
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return Result<string>.Error("告警上报参数为空");
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}
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if (string.IsNullOrWhiteSpace(dto.DeviceCode) && string.IsNullOrWhiteSpace(dto.Content))
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{
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return Result<string>.Error("设备编号与告警内容不能同时为空");
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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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// ===== 去重合并：窗口内相同 设备+测点+类型 的活跃告警（未确认/已确认）只累加不新建 =====
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var active = await SqlSugarContext.DbContext.Queryable<AlertMessageEntity>()
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.Where(x => x.IsDel == 0)
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.Where(x => x.DeviceCode == dto.DeviceCode && x.Metric == dto.Metric && x.AlertType == dto.AlertType)
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.Where(x => x.AlertStatus == AlertStatusEnum.Unacknowledged || x.AlertStatus == AlertStatusEnum.Acknowledged)
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.Where(x => x.LastAlertTime >= now.AddMinutes(-MergeWindowMinutes))
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.FirstAsync();
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if (active != null)
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{
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// 累加触发次数、刷新最近告警时间与当前值；级别取更高者（告警升级）
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var mergedLevel = active.AlertLevel > dto.AlertLevel ? active.AlertLevel : dto.AlertLevel;
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await SqlSugarContext.DbContext.Updateable<AlertMessageEntity>()
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.SetColumns(x => new AlertMessageEntity
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{
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TriggerCount = x.TriggerCount + 1,
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LastAlertTime = now,
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CurrentValue = dto.CurrentValue ?? x.CurrentValue,
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AlertLevel = mergedLevel
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})
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.Where(x => x.Id == active.Id)
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.ExecuteCommandAsync();
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// 合并告警也入队（是否真正推送由 Worker 按通知规则静默期决定）
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AlertNotifyBus.Publish(active.Id, false);
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return Result<string>.Success(active.Id.ToString());
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}
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// ===== 新告警：生成默认内容 → 落库 → 规则计数 → 入队 =====
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var entity = dto.ToEntity();
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if (string.IsNullOrWhiteSpace(entity.Content))
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{
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entity.Content = BuildDefaultContent(entity);
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}
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entity.CreateTime = now;
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entity.FirstAlertTime = now;
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entity.LastAlertTime = now;
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entity.TriggerCount = 1;
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entity.AlertStatus = AlertStatusEnum.Unacknowledged;
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await SqlSugarContext.DbContext.Insertable(entity).ExecuteCommandAsync();
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// 来源为规则引擎时，回写规则触发统计（与黄的规则引擎模块联动）
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if (entity.RuleId > 0)
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{
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await SqlSugarContext.DbContext.Updateable<AlertRuleEntity>()
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.SetColumns(x => new AlertRuleEntity { TriggerCount = x.TriggerCount + 1, LastAlarmTime = now })
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.Where(x => x.Id == entity.RuleId)
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.ExecuteCommandAsync();
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}
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AlertNotifyBus.Publish(entity.Id, true);
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return Result<string>.Success(entity.Id.ToString());
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}
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catch (Exception ex)
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{
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return Result<string>.Error("告警上报失败", ex);
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}
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}
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/// <summary>
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/// 按内置模板生成默认告警内容（后续可由通知模板模块接管，见 TemplateCode 预留字段）
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/// </summary>
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private static string BuildDefaultContent(AlertMessageEntity e)
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{
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string device = string.IsNullOrWhiteSpace(e.DeviceName) ? e.DeviceCode ?? "未知设备" : $"{e.DeviceName}({e.DeviceCode})";
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string metric = string.IsNullOrWhiteSpace(e.Metric) ? "" : $" 测点[{e.Metric}]";
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string value = e.CurrentValue.HasValue ? $" 当前值 {e.CurrentValue.Value}" : "";
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string threshold = e.ThresholdValue.HasValue ? $"，阈值 {e.ThresholdValue.Value}" : "";
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return $"{device}{metric} 触发告警：{value}{threshold}";
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}
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}
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}
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