Start using the OpenTelemetry crate for telemtry

[tasn]

https://github.com/open-telemetry/opentelemetry-rust

Also: don't forget to update the docs/README to explain how to use it with datadog/newrelic/sentry.

More info / related attempts:

• OpenTelemetry compatible tracing middleware tokio-rs/axum#750
• Add OpenTelemetry middleware tokio-rs/axum#769
• WIP: Make Trace compatible with OpenTelemetry tower-rs/tower-http#180
• https://github.com/EmbarkStudios/server-framework/blob/main/src/middleware/trace/opentelemetry.rs
• Maybe https://github.com/davidB/sandbox_axum_observability

[cawfeecoder]

@tasn I think you'll get better use out of https://github.com/tokio-rs/tracing. It supports OpenTelemetry (amongst a host of other providers as well), which should give an end consumer of Svix (self-hosted) options for monitoring/observability.

I tend to use tracing to generate Jaegar/OpenTelemetry compatible tracing, and rely on something like https://github.com/metrics-rs/metrics for the Prometheus endpoint (I run an OpenTelemetry sidecar in k8s to scrape the pod, but I figure almost anyone interested in metrics is going to be running an OpenTelemetry scraper somewhere external).

EDIT: My bad, I realize the metrics portion of OpenTelemetry seems somewhat stable (well... alpha) now.

[tasn]

Thanks @cawfeecoder! We are using tracing, the idea is to use the opentelemetry tracing plugin. Though thanks for the feedback, we'll check the built-in stuff in tracing too.

[alexrejto]

Hi @tasn,
For our planning purposes, do you have any update on when opentelemetry will land? Thanks for all your help!

[tasn]

Hey @alexrejto, when would you like to have it by?

[alexrejto]

Any chance you could fit it in in the next month?

[tasn]

Unless there are surprises, I believe we can.

We'll aim to get it ready in the next couple of weeks.

[svix-daniel]

This has been fixed in #522.