Deep linking Metrics and Tracing

[samarara]

Hi,

I was watching this tutorial by Rob Skillington (pdf, YouTube) about deep linking trace and span id's in metrics via Extended Prometheus exposition format using OpenMetrics. I was browsing the opentelemetry Go libs and I see they support providing the trace context to their meters (https://github.com/open-telemetry/opentelemetry-go/blob/main/internal/global/meter.go#L317). Is this something down the pipeline for the JS implementation? I'd love to contribute if someone is not looking into this already.

[dyladan]

Since a single context object is shared between all signals it is definitely feasible that this could be done. As far as I know, this is an eventual goal of the spec to be able to enrich one signal with data from another (such as including trace ids in logs, or attaching metrics to a trace). Since there is no spec for this now, I would be hesitant to get too far along in the implementation. I would prefer to see a draft spec and have JS join the prototype implementation group.

[samarara]

@dyladan What's the process of creating a draft spec? I had assumed since GoLang is already implemented it there was an existing spec to write an implementation against. But I'd love to get started on that if there isn't any.