Profiling - No spans except for Program.cs Main method in ASP.NET Core application

[tvardero]

Package

Sentry.Profiling

.NET Flavor

.NET Core

.NET Version

9.0.? from mcr.microsoft.com/dotnet/sdk:9.0

OS

Linux

OS Version

Linux x64 from mcr.microsoft.com/dotnet/aspnet:9.0

Development Environment

Other

SDK Version

5.16.2

Self-Hosted Sentry Version

25.11.0

Workload Versions

not related

UseSentry or SentrySdk.Init call

appsettings.json:

"Logging": {
  "LogLevel": {
    "Default": "Information",
    "System": "Warning",
    "Microsoft": "Warning",
    "Microsoft.Hosting.Lifetime": "Information",
    "Microsoft.EntityFrameworkCore": "Information",
    "Microsoft.EntityFrameworkCore.Database.Command": "Warning",
    "Microsoft.AspNetCore.Hosting.Diagnostics": "None",
    "ZiggyCreatures.Caching.Fusion": "None",
    "Polly": "None"
  }
},
"Sentry": {
  "Dsn": "https://xxxxxxxxxxxxxxxxxxxxxxxxxxxx@sentry.xxxxxxxxxx/2",
  "MinimumEventLevel": "Warning",
  "MinimumBreadcrumbLevel": "Information",
  "ProfilesSampleRate": 0.3
},
"OpenTelemetryOptions":  {
  "Endpoint": "https://alloy.xxxxxxxxxxxxxx",
  "Protocol": "HttpProtobuf"
}

Program.cs:

static void ConfigureTelemetry(WebApplicationBuilder builder)
{
    OpenTelemetryBuilder openTelemetryBuilder = builder.Services.AddOpenTelemetry()
        .ConfigureResource(r =>
        {
            r.AddService("gl-backend");
            r.AddAttributes([new KeyValuePair<string, object>("environment", builder.Environment.EnvironmentName)]);
        })
        .WithTracing(t =>
        {
            t.AddAspNetCoreInstrumentation();
            t.AddHttpClientInstrumentation();
            t.AddSentry();
        })
        .WithMetrics(m =>
        {
            m.AddAspNetCoreInstrumentation();
            m.AddHttpClientInstrumentation();
            m.AddRuntimeInstrumentation();
        })
        .WithLogging(_ => { },
            l =>
            {
                l.IncludeFormattedMessage = true;
                l.IncludeScopes = true;
            });

    var sentryDsn = builder.Configuration.GetValue<string?>("Sentry:Dsn");
    if (!string.IsNullOrWhiteSpace(sentryDsn))
        builder.WebHost.UseSentry((SentryAspNetCoreOptions s) =>
        {
            s.AdjustStandardEnvironmentNameCasing = false;
            s.UseOpenTelemetry();
            s.DisableSentryHttpMessageHandler = true;
            s.AddProfilingIntegration();

            // Remove nugets from in-app frames. This way nugets won't be considered "App" frames and will be considered "Library" frames.
            Array.ForEach(Program._excludeNugetsFromSentryAppFrames, s.AddInAppExclude);
        });

    var otelOptions = builder.Configuration.GetSection("OpenTelemetryOptions").Get<OpenTelemetryOptions>();
    if (otelOptions?.Endpoint != null) { openTelemetryBuilder.UseOtlpExporter(otelOptions.Protocol, otelOptions.Endpoint); }
}

public partial class Program
{
    private static readonly string[] _excludeNugetsFromSentryAppFrames =
    [
        "MySqlConnector", "Pomelo.EntityFrameworkCore.MySql", "ShipEngine", "Yarp", "Rebus", "Amazon", "AWSSDK", "ZiggyCreatures.FusionCache",
        "OpenTelemetry", "EntityFramework.Exceptions.Common", "object InvokeStub_TaskAwaiter", "TickerQ", "Duende.IdentityModel",
        "Duende.AccessTokenManagement", "Xero", "Scriban", "BarcodeStandard"
    ];
}

Steps to Reproduce

1. Use application
2. Inspect profiling page on Sentry

Expected Result

Profiles of application code.

Actual Result

No profiles, except Program.cs main function.

[linear]

NET-557

[tvardero]

I have decided to create a separate issue from #4037
I think 4037 is more about Sentry UI problem - not showing graph of slowest functions.

[Flash0ver]

Thank you @tvardero for your detailed report.

I believe this is a duplicate of #2316, or better to say a +1 for it.
Perhaps worth considering completing "Sample Format V2"/"Continuous Profiling"/"UI Profiling" before (#4592), especially considering the upcoming "Span-first"/"Span-streaming" project.