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Not all data seems to be flowing but now this uses otel.
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95 changes: 95 additions & 0 deletions
95
src/BlazorPong.Web/Server/WebApplicationBuilderExtensions.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| using Microsoft.AspNetCore.Diagnostics.HealthChecks; | ||
| using Microsoft.Extensions.Diagnostics.HealthChecks; | ||
| using OpenTelemetry.Logs; | ||
| using OpenTelemetry.Metrics; | ||
| using OpenTelemetry.Resources; | ||
| using OpenTelemetry.Trace; | ||
|
|
||
| namespace BlazorPong.Web.Server; | ||
|
|
||
| public static class WebApplicationBuilderExtensions | ||
| { | ||
| public static IHostApplicationBuilder AddServiceDefaults(this IHostApplicationBuilder builder) | ||
| { | ||
| builder.ConfigureOpenTelemetry(); | ||
|
|
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| builder.AddDefaultHealthChecks(); | ||
|
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| return builder; | ||
| } | ||
|
|
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| public static IHostApplicationBuilder ConfigureOpenTelemetry(this IHostApplicationBuilder builder) | ||
| { | ||
| builder.Logging.AddOpenTelemetry(logging => | ||
| { | ||
| logging.IncludeFormattedMessage = true; | ||
| logging.IncludeScopes = true; | ||
| }); | ||
|
|
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| builder.Services.AddOpenTelemetry() | ||
| .WithMetrics(metrics => | ||
| { | ||
| metrics.AddRuntimeInstrumentation() | ||
| .AddBuiltInMeters(); | ||
| }) | ||
| .WithTracing(tracing => | ||
| { | ||
| if (builder.Environment.IsDevelopment()) | ||
| { | ||
| // We want to view all traces in development | ||
| tracing.SetSampler(new AlwaysOnSampler()); | ||
| } | ||
|
|
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| tracing.AddAspNetCoreInstrumentation() | ||
| .AddGrpcClientInstrumentation() | ||
| .AddHttpClientInstrumentation(); | ||
| }); | ||
|
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| builder.AddOpenTelemetryExporters(); | ||
|
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| return builder; | ||
| } | ||
|
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| private static IHostApplicationBuilder AddOpenTelemetryExporters(this IHostApplicationBuilder builder) | ||
| { | ||
| var useOtlpExporter = !string.IsNullOrWhiteSpace(builder.Configuration["OTEL_EXPORTER_OTLP_ENDPOINT"]); | ||
|
|
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| if (useOtlpExporter) | ||
| { | ||
| builder.Services.Configure<OpenTelemetryLoggerOptions>(logging => logging.AddOtlpExporter()); | ||
| builder.Services.ConfigureOpenTelemetryMeterProvider(metrics => metrics.AddOtlpExporter()); | ||
| builder.Services.ConfigureOpenTelemetryTracerProvider(tracing => tracing.AddOtlpExporter()); | ||
| } | ||
|
|
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| return builder; | ||
| } | ||
|
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| public static IHostApplicationBuilder AddDefaultHealthChecks(this IHostApplicationBuilder builder) | ||
| { | ||
| builder.Services.AddHealthChecks() | ||
| // Add a default liveness check to ensure app is responsive | ||
| .AddCheck("self", () => HealthCheckResult.Healthy(), ["live"]); | ||
|
|
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| return builder; | ||
| } | ||
|
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| public static WebApplication MapDefaultEndpoints(this WebApplication app) | ||
| { | ||
| // All health checks must pass for app to be considered ready to accept traffic after starting | ||
| app.MapHealthChecks("/health"); | ||
|
|
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| // Only health checks tagged with the "live" tag must pass for app to be considered alive | ||
| app.MapHealthChecks("/alive", new HealthCheckOptions | ||
| { | ||
| Predicate = r => r.Tags.Contains("live") | ||
| }); | ||
|
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| return app; | ||
| } | ||
|
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| private static MeterProviderBuilder AddBuiltInMeters(this MeterProviderBuilder meterProviderBuilder) => | ||
| meterProviderBuilder.AddMeter( | ||
| "Microsoft.AspNetCore.Hosting", | ||
| "Microsoft.AspNetCore.Server.Kestrel", | ||
| "System.Net.Http"); | ||
| } |
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