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Filling in Method for Traces in Go Instrumentation

TLDR Timothy asked about filling in the method for traces in Go. vishal-signoz identified a workaround by changing the spankind to Internal, and shared a PR for the fix.

9mo

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Feb 23, 2023 (9 months ago)

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Timothy

05:39 PM

How do I fill in the method for my traces? I thought it was just the http.method tag but that seems to be set already

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Ankit

06:15 PM

It should be there cc: vishal-signoz

Timothy

06:18 PM

I should add that this is outgoing http request, incoming requests work correctly. Also this is go instrumentation and I am using the net/http opentelemetry contribution

Ankit

06:23 PM

noted...it should not matter. If a span has http.method in span attributes, it should be shown at the column in trace filter page too IMO

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vishal-signoz

06:26 PM

Timothy Is it the same span?

Timothy

06:29 PM

vishal-signoz Yes the span that does not have the method displayed also has the tag http.method

vishal-signoz

06:33 PM

Can you please share response of getFilteredSpans API, it can be checked from network tab in browser dev console?
You can mask sensitive data.

Timothy

06:44 PM

06:47

Timothy

06:47 PM

{"timestamp":"2023-02-23T18:12:50.441997003Z","spanID":"4814d1557f673028","traceID":"606ab4ab46b4d0b4a101007573ca5d61","serviceName":"switch-manager-otel-dev-switch-manager","operation":"/prm-otel/switch-mgmt/switches/mac_address/{mac-address}/associate","durationNano":8651989367,"HttpMethod":"","method":"","statusCode":"200","RPCMethod":""}

This is the issue span

vishal-signoz

06:49 PM

Can you please send response that you receive when you open trace detail page by clicking on this span?

Timothy

06:53 PM

vishal-signoz

07:04 PM

Timothy By analysing the data I think this span records an external span and span kind is client.
More details on opentelemetry spec: https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/api.md#spankind

We are not recording this as normal http method and instead store it as external http method and thus not showing in the table.

Please create an issue in public repo we will investigate it further and fix it.

cc: Ankit

Timothy

07:07 PM

okay I can do that, do you think changing the span kind will resolve the issue?

07:23

Timothy

07:23 PM

By changing the spankind to Internal it works correctly

Feb 24, 2023 (9 months ago)

vishal-signoz

04:25 AM

Yes Timothy
Did you manually instrument the app? Or using auto instrumentation?

Timothy

02:52 PM

I used the net/http library to instrument our Client

02:53

Timothy

02:53 PM

https://github.com/open-telemetry/opentelemetry-go-contrib/tree/d2968420ddc8b8d81b04ad993b9d33fb88c22fb7/instrumentation/net/http/otelhttp

vishal-signoz

04:20 PM

Ok, you don’t need to change spanKind.
We will merge a fix on this soon. (Here’s the PR: https://github.com/SigNoz/signoz-otel-collector/pull/105)
For now you can change the spankind.

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