Use zio-theseus as a reference to integrate zio-opentelemetry with a doobie, kafka, grpc, etc.

[grouzen]

The library: https://github.com/pierangeloc/zio-theseus

Related issues:

• OpenTelemetry: integration with popular http libraries such as zio-http and http4s #744
• OpenTelemetry: Baggage gets lost when integrating with zio-http #739
• OpenTelemetry span for ZStream #728
• OpenTelemetry: integration with zio-http, parent span ends immidiately for the response stream #722
• OpenTelemetry: add gprc example (autoinstrumentation and manual) #751

[grouzen]

I think the basic idea is to have a separate module for each integration, for example:

• opentelemetry-grpc
• opentelemetry-zio-http

Update: I adjusted the module names.

[pierangelocecchetto]

I'll pick this up and move zio-theseus content into separate modules. There will be also a base common module containing the integration algebra

[grouzen]

Great! Thanks for your help! Feel free to create several smaller PRs instead of one big.
This is gonna be a huge accomplishment in terms of user experience.

[grouzen]

@pierangelocecchetto Hi! Hope you're doing well! I just wanted to say that I'll be happy to help with any questions you have or pair on something if you need this.

[pierangeloc]

@grouzen I just resumed working on this recently, I think I'll make some progress in these days.
One thing I might need help with is using Grafana Tempo/Loki, or the recently release Alloy https://github.com/grafana/alloy/.
In particular I'm interested in showing the correlation between logs and spans/traces.

Thanks for offering your help, I'll contact you on Discord to evaluate the options

[grouzen]

In particular I'm interested in showing the correlation between logs and spans/traces.

I also evaluated different options for this and ended up using OTLP JSON logging reporters in the examples for the sake of simplicity.
But I agree that it would be great to use graphical representation.

[grouzen]

@pierangeloc Hi! I just want to let you know that I'm ready to cut a "3.0.0" release of zio-telemetry and am keen to start working on integrations with libraries from ZIO and typelevel ecosystem. I'll have a look at your library for inspiration. Thanks for it!

[grouzen]

There is ongoing work on adding support for OpenTracing and OpenTelemetry into zio-kafka: zio/zio-kafka#1345