Recognize "http.request.method" and "http.response.status_code" span attributes in dashboard

[KalleOlaviNiemitalo]

Is there an existing issue for this?

• I have searched the existing issues

Is your feature request related to a problem? Please describe the problem.

OpenTelemetry semantic conventions v1.21.0 renamed the http.method attribute to http.request.method, and http.status_code to http.response.status_code. The .NET Aspire dashboard however recognizes only the old names http.method and http.status_code. Now when my service publishes telemetry using the current names http.request.method and http.response.status_code, the .NET Aspire dashboard does not understand that the span is for an HTTP client request, and does not show "HTTP" and the HTTP status code in the friendly summary.

Describe the solution you'd like

Recognize the http.request.method name in addition to http.method.

When a span has the http.request.method attribute, recognize the http.response.status_code name rather than http.status_code.

Additional context

• OpenTelemetry semantic conventions for HTTP client spans
• Rename http.* attributes to align with ECS open-telemetry/opentelemetry-specification#3182 requested the new names.
• BREAKING: Introduce common url.* attributes, and improve use of namespacing under http.* open-telemetry/opentelemetry-specification#3355
• https://github.com/open-telemetry/semantic-conventions/releases/tag/v1.21.0 mentions this change.
• Add standard tags to HttpClient native trace instrumentation runtime#104251 added the new attributes. AFAICT, HttpClient in .NET never emitted the old attributes http.method and http.status_code.
• Rename hosting, routing and error handling metrics to be consistent with OpenTelemetry aspnetcore#49743 started using http.request.method and http.response.status_code in metrics. Before that, ASP.NET Core used method and status-code.
• Initialize hosting trace with OTEL tags for sampling aspnetcore#62090 started using http.request.method in traces.

.NET Aspire dashboard code that recognizes only the old names http.method and http.status_code:

aspire/src/Aspire.Dashboard/Otlp/Model/OtlpSpan.cs

Lines 176 to 182 in d9077f9

	if (!string.IsNullOrEmpty(OtlpHelpers.GetValue(span.Attributes, "http.method")))
	{
	var httpMethod = OtlpHelpers.GetValue(span.Attributes, "http.method");
	var statusCode = OtlpHelpers.GetValue(span.Attributes, "http.status_code");
	return $"HTTP {httpMethod?.ToUpperInvariant()} {statusCode}";
	}

[KalleOlaviNiemitalo]

The friendly summary logic was added in #394 in October 2023; thus after the OpenTelemetry semantic conventions 1.21.0 release in July 2023.

area-dashboard

[JamesNK]

@DamianEdwards Why the 9.5.1 milestone? This has been around a long time and the impact is very small. IMO waiting for next version is fine.

[DamianEdwards]

Ah my bad, I thought this was a recent thing. Fine to move to vNext