Asp0014 Warning

Question

Getting weird warning.

AsP0014: Suggest using top level route registrations

app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
endpoints.SetupHealthChecksEndpoints();
});

My HealthCheck is 'Healthy' whereas
HealthCheckUI is 'UnHealthy' Error Endpoint.

Pleae help to resolve.

Tuhin Paul · Answer

Check how you can modify your code to use route registrations: var builder = WebApplication.CreateBuilder(args); // Add services to the container. builder.Services.AddControllers(); builder.Services.AddHealthChecks() .AddCheck ("example_health_check"); var app = builder.Build(); // Configure the HTTP request pipeline. if (app.Environment.IsDevelopment()) { app.UseDeveloperExceptionPage(); } else { app.UseExceptionHandler("/Home/Error"); app.UseHsts(); } app.UseHttpsRedirection(); app.UseStaticFiles(); app.UseRouting(); app.UseAuthorization(); app.MapControllers(); app.MapHealthChecks("/health"); app.Run(); builder.Services.AddControllers(); and builder.Services.AddHealthChecks() are used to add the necessary services.

Tuhin Paul · Answer

Are you're registering routes using app.UseEndpoints . In minimal APIs (introduced in ASP.NET Core 6+), it's recommended to register routes directly at the top level of the application, like this: app.MapControllers(); app.SetupHealthChecksEndpoints() Remove the app.UseEndpoints call. Move app.MapControllers(); and app.SetupHealthChecksEndpoints(); directly under the app variable.

Hemapriya · Answer

Thanks Tuhin Paul! Unfortunately still the same error. I corrected and used at the top level but still no luck.

Hemapriya · Answer

Thanks Jithu! Unfortunately still doesn't work ! Any help please. builder.Services.AddHealthChecksUI(setupSettings: setup => { setup.AddHealthCheckEndpoint("example_health_check", "/health-ui"); }).AddInMemoryStorage(); app.MapHealthChecksUI(healthChecks => healthChecks .UIPath = "/health-ui");

Jithu Thomas · Answer

1. Update Route Registrations The new preferred method is to register routes directly on the app object. Here's how to adjust your code: app.MapControllers(); app.MapHealthChecks("/health", new HealthCheckOptions { Predicate = check => check.Tags.Contains("SQL Connection") || check.Tags.Contains("rate check") || check.Tags.Contains("live check"), ResponseWriter = CustomResponseWriter.WriteHealthCheckResponse }); 2. Verify HealthCheckUI Configuration If your health check endpoint is healthy but HealthCheckUI is reporting it as unhealthy, it could be a configuration issue. Make sure the HealthCheckUI is correctly configured to point to the health check endpoint. var builder = WebApplication.CreateBuilder(args); // Add health checks builder.Services.AddHealthChecks() .AddCheck("example_health_check", () => HealthCheckResult.Healthy("Healthy result"), tags: new[] { "example_tag" }); // Add HealthChecksUI builder.Services.AddHealthChecksUI(setupSettings: setup => { setup.AddHealthCheckEndpoint("Example Health Check", "/health"); }).AddInMemoryStorage(); var app = builder.Build(); app.UseRouting(); app.MapHealthChecks("/health", new HealthCheckOptions { Predicate = check => check.Tags.Contains("SQL Connection") || check.Tags.Contains("rate check") || check.Tags.Contains("live check"), ResponseWriter = CustomResponseWriter.WriteHealthCheckResponse }); app.MapHealthChecksUI(); app.MapControllers(); app.Run(); 3. Custom Health Check Response Writer Ensure the custom response writer is correctly implemented: public static class CustomResponseWriter { public static Task WriteHealthCheckResponse(HttpContext context, HealthReport report) { context.Response.ContentType = "application/json"; // Determine the overall status string overallStatus = report.Entries.Any(e => e.Value.Status == HealthStatus.Unhealthy && e.Key == "live check") ? "Degraded" : report.Status.ToString(); // If any non-live check is unhealthy, set overall status to UnHealthy if (overallStatus != "Degraded" && report.Entries.Any(e => e.Value.Status == HealthStatus.Unhealthy)) { overallStatus = "UnHealthy"; } var response = new { status = overallStatus, checks = report.Entries.Select(e => new { name = e.Key, status = e.Value.Status.ToString(), description = e.Value.Description }), duration = report.TotalDuration }; return context.Response.WriteAsync(JsonSerializer.Serialize(response)); } } Try this way, it will work....