87 lines
3.3 KiB
C#
87 lines
3.3 KiB
C#
using Microsoft.EntityFrameworkCore;
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public class AlertQualityMetricsService : IAlertQualityMetricsService
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{
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private readonly AppDbContext _db;
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public AlertQualityMetricsService(AppDbContext db) => _db = db;
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public async Task<IReadOnlyList<AlertQualityMetricResponse>> ListAsync(
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AlertType? alertType, DateTimeOffset from, DateTimeOffset to)
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{
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var query = _db.AlertQualityMetrics
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.AsNoTracking()
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.Where(m => m.WindowStart >= from && m.WindowEnd <= to);
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if (alertType.HasValue)
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query = query.Where(m => m.AlertType == alertType.Value);
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var rows = await query
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.OrderByDescending(m => m.WindowStart)
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.ThenBy(m => m.AlertType)
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.ToListAsync();
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return rows.Select(Map).ToList();
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}
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public async Task<AlertQualitySummaryResponse> GetSummaryAsync(
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DateTimeOffset from, DateTimeOffset to)
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{
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var snapshots = await _db.AlertQualityMetrics
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.AsNoTracking()
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.Where(m => m.WindowStart >= from && m.WindowEnd <= to)
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.ToListAsync();
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if (snapshots.Count == 0)
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{
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return new AlertQualitySummaryResponse(
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from, to, 0, 0, 0, 0, 0, 0, 0, 0);
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}
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var totalAlerts = snapshots.Sum(s => s.TotalAlerts);
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var totalFeedback = snapshots.Sum(s => s.FeedbackCount);
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var totalAcknowledged = snapshots.Sum(s => s.AcknowledgedCount);
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var totalUseful = snapshots.Sum(s => s.FeedbackUsefulCount);
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var totalFalsePositive = snapshots.Sum(s => s.FeedbackFalsePositiveCount);
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var totalWouldAct = snapshots.Sum(s => s.FeedbackWouldActCount);
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var weightedAckSeconds = snapshots.Sum(s => s.AvgSecondsToAcknowledge * s.TotalAlerts);
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var weightedResolveSeconds = snapshots.Sum(s => s.AvgSecondsToResolution * s.ResolvedCount);
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return new AlertQualitySummaryResponse(
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PeriodStart: from,
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PeriodEnd: to,
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TotalAlerts: totalAlerts,
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TotalFeedback: totalFeedback,
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AcknowledgementRate: totalAlerts == 0 ? 0 : (double)totalAcknowledged / totalAlerts,
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FalsePositiveRate: totalFeedback == 0 ? 0 : (double)totalFalsePositive / totalFeedback,
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UsefulRate: totalFeedback == 0 ? 0 : (double)totalUseful / totalFeedback,
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WouldActRate: totalFeedback == 0 ? 0 : (double)totalWouldAct / totalFeedback,
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AvgSecondsToAcknowledge: totalAlerts == 0 ? 0 : weightedAckSeconds / totalAlerts,
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AvgSecondsToResolution: snapshots.Sum(s => s.ResolvedCount) == 0
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? 0
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: weightedResolveSeconds / snapshots.Sum(s => s.ResolvedCount));
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}
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private static AlertQualityMetricResponse Map(AlertQualityMetric m) =>
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new(
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m.Id,
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m.AlertType.ToString(),
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m.WindowStart,
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m.WindowEnd,
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m.TotalAlerts,
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m.AcknowledgedCount,
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m.ResolvedCount,
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m.EscalatedCount,
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m.FeedbackUsefulCount,
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m.FeedbackFalsePositiveCount,
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m.FeedbackWouldActCount,
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m.FeedbackCount,
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m.AcknowledgementRate,
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m.FalsePositiveRate,
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m.UsefulRate,
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m.WouldActRate,
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m.AvgSecondsToAcknowledge,
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m.AvgSecondsToResolution,
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m.ComputedAt);
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} |