112 lines
4.0 KiB
C#
112 lines
4.0 KiB
C#
using Microsoft.AspNetCore.Builder;
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using Microsoft.AspNetCore.Diagnostics.HealthChecks;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Diagnostics.HealthChecks;
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using Microsoft.Extensions.Logging;
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using OpenTelemetry;
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using OpenTelemetry.Metrics;
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using OpenTelemetry.Trace;
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namespace Microsoft.Extensions.Hosting;
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// Adds common .NET Aspire services: service discovery, resilience, health checks, and OpenTelemetry.
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// This project should be referenced by each service project in your solution.
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// To learn more about using this project, see https://aka.ms/dotnet/aspire/service-defaults
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public static class Extensions
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{
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public static IHostApplicationBuilder AddServiceDefaults(this IHostApplicationBuilder builder)
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{
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builder.ConfigureOpenTelemetry();
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builder.AddDefaultHealthChecks();
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builder.Services.AddServiceDiscovery();
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builder.Services.ConfigureHttpClientDefaults(http =>
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{
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// Turn on resilience by default
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http.AddStandardResilienceHandler();
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// Turn on service discovery by default
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http.AddServiceDiscovery();
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});
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return builder;
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}
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public static IHostApplicationBuilder ConfigureOpenTelemetry(this IHostApplicationBuilder builder)
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{
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builder.Logging.AddOpenTelemetry(logging =>
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{
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logging.IncludeFormattedMessage = true;
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logging.IncludeScopes = true;
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});
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builder.Services.AddOpenTelemetry()
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.WithMetrics(metrics =>
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{
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metrics.AddAspNetCoreInstrumentation()
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.AddHttpClientInstrumentation()
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.AddRuntimeInstrumentation();
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})
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.WithTracing(tracing =>
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{
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tracing.AddAspNetCoreInstrumentation()
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// Uncomment the following line to enable gRPC instrumentation (requires the OpenTelemetry.Instrumentation.GrpcNetClient package)
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//.AddGrpcClientInstrumentation()
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.AddHttpClientInstrumentation();
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});
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builder.AddOpenTelemetryExporters();
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return builder;
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}
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private static IHostApplicationBuilder AddOpenTelemetryExporters(this IHostApplicationBuilder builder)
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{
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var useOtlpExporter = !string.IsNullOrWhiteSpace(builder.Configuration["OTEL_EXPORTER_OTLP_ENDPOINT"]);
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if (useOtlpExporter)
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{
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builder.Services.AddOpenTelemetry().UseOtlpExporter();
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}
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// Uncomment the following lines to enable the Azure Monitor exporter (requires the Azure.Monitor.OpenTelemetry.AspNetCore package)
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//if (!string.IsNullOrEmpty(builder.Configuration["APPLICATIONINSIGHTS_CONNECTION_STRING"]))
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//{
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// builder.Services.AddOpenTelemetry()
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// .UseAzureMonitor();
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//}
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return builder;
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}
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public static IHostApplicationBuilder AddDefaultHealthChecks(this IHostApplicationBuilder builder)
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{
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builder.Services.AddHealthChecks()
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// Add a default liveness check to ensure app is responsive
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.AddCheck("self", () => HealthCheckResult.Healthy(), ["live"]);
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return builder;
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}
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public static WebApplication MapDefaultEndpoints(this WebApplication app)
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{
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// Adding health checks endpoints to applications in non-development environments has security implications.
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// See https://aka.ms/dotnet/aspire/healthchecks for details before enabling these endpoints in non-development environments.
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if (app.Environment.IsDevelopment())
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{
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// All health checks must pass for app to be considered ready to accept traffic after starting
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app.MapHealthChecks("/health");
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// Only health checks tagged with the "live" tag must pass for app to be considered alive
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app.MapHealthChecks("/alive", new HealthCheckOptions
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{
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Predicate = r => r.Tags.Contains("live")
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});
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}
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return app;
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}
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}
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