57 lines
1.9 KiB
C#
57 lines
1.9 KiB
C#
using Microsoft.EntityFrameworkCore;
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public sealed class WardGatewayMetricsCollector : BackgroundService
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{
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private readonly IServiceScopeFactory _scopes;
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private readonly ClinicalMetrics _metrics;
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private readonly ILogger<WardGatewayMetricsCollector> _logger;
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public WardGatewayMetricsCollector(
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IServiceScopeFactory scopes,
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ClinicalMetrics metrics,
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ILogger<WardGatewayMetricsCollector> logger)
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{
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_scopes = scopes;
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_metrics = metrics;
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_logger = logger;
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}
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protected override async Task ExecuteAsync(CancellationToken ct)
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{
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using var timer = new PeriodicTimer(TimeSpan.FromSeconds(60));
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while (await timer.WaitForNextTickAsync(ct))
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await CollectAsync(ct);
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}
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private async Task CollectAsync(CancellationToken ct)
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{
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try
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{
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await using var scope = _scopes.CreateAsyncScope();
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var db = scope.ServiceProvider.GetRequiredService<AppDbContext>();
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var offlineBySite = await db.WardGateways
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.Include(g => g.Site)
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.Where(g => g.Status != GatewayStatus.Online)
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.GroupBy(g => g.Site.SiteCode)
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.Select(g => new { SiteCode = g.Key, Count = g.Count() })
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.ToListAsync(ct);
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foreach (var row in offlineBySite)
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_metrics.WardGatewaysOffline.WithLabels(row.SiteCode).Set(row.Count);
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var allGateways = await db.WardGateways
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.AsNoTracking()
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.ToListAsync(ct);
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foreach (var g in allGateways)
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_metrics.WardGatewayBufferDepth
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.WithLabels(g.GatewayCode, g.Department)
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.Set(g.ReportedBufferDepth);
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "WardGatewayMetricsCollector failed");
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}
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}
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} |