hamid
64 lines
2.9 KiB
C#
64 lines
2.9 KiB
C#
using Microsoft.AspNetCore.Builder;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.DependencyInjection;
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using OpenTelemetry.Metrics;
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using OpenTelemetry.Resources;
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using OpenTelemetry.Trace;
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namespace Baya.Infrastructure.Monitoring.Configurations;
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/// <summary>
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/// The single OpenTelemetry stack (refinement-phase-9, §9.1). Metrics and traces share one resource
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/// (<c>service.name = Baya.Web.Api</c>). Metrics are scraped by Prometheus (the <c>/metrics</c> endpoint,
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/// wired in <see cref="PrometheusMetricsConfigurations"/>); traces cover ASP.NET Core requests and EF Core
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/// commands so a cross-service money flow (webhook → confirm → ledger) can be followed end to end. The
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/// request's trace id is the <c>ApiResult.RequestId</c> the client sees, so a support ticket maps 1:1 to a
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/// trace.
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/// <para>The prior duplicate prometheus-net stack was removed — OpenTelemetry is now the only metrics source.</para>
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/// <para>OTLP export (traces + metrics) is <b>opt-in</b>: it is wired only when <c>OpenTelemetry:Otlp:Endpoint</c>
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/// is configured, so an MVP deployment with Prometheus alone runs unchanged and no exporter spams connection
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/// errors against an absent collector.</para>
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/// </summary>
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public static class OpenTelemetryConfigurations
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{
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public const string ServiceName = "Baya.Web.Api";
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public static WebApplicationBuilder SetupOpenTelemetry(this WebApplicationBuilder builder)
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{
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var otlpEndpoint = builder.Configuration["OpenTelemetry:Otlp:Endpoint"];
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var hasOtlp = !string.IsNullOrWhiteSpace(otlpEndpoint);
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builder.Services.AddOpenTelemetry()
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.ConfigureResource(resource => resource.AddService(ServiceName))
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.WithMetrics(metricsBuilder =>
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{
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metricsBuilder.AddRuntimeInstrumentation()
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.AddAspNetCoreInstrumentation()
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.AddMeter("Microsoft.AspNetCore.Hosting"
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, "Microsoft.AspNetCore.Server.Kestrel"
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, "System.Net.Http"
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, "Baya.Web.Api"
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, "ControllerMetrics"
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// The mediator request-duration histogram (MetricsBehaviour) — captured here so the one
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// metrics stack actually exports it (the removed prometheus-net stack never did).
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, "mediator_meter")
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.AddPrometheusExporter();
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if (hasOtlp)
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metricsBuilder.AddOtlpExporter(options => options.Endpoint = new Uri(otlpEndpoint!));
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})
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.WithTracing(tracingBuilder =>
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{
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tracingBuilder.AddAspNetCoreInstrumentation()
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.AddEntityFrameworkCoreInstrumentation();
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if (hasOtlp)
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tracingBuilder.AddOtlpExporter(options => options.Endpoint = new Uri(otlpEndpoint!));
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});
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builder.Services.AddMetrics();
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return builder;
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}
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}
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