Add project proposals for Prometheus

[ArthurSens]

Creating it as a draft since we're still figuring out the details for the second project :)

[AndrejKiri]

@ArthurSens Done. Added a couple of small suggestions. Nothing serious. Feel free to reject if it doesn't make sense. 😉

[nate-double-u]

Thanks for this @ArthurSens!

@amy-super, @AndrejKiri, I see you've each approved this PR to confirm participation, thanks for that! Arthur, we prefer to have more than one mentor per project, is there someone who could join your first project?

(edit to acknowledge approvals 😅)

[ArthurSens]

Hi Nate, unfortunately @dashpole and I are the only maintainers for this piece of code and David won't be available this time.

Would it be ok if I'm the only mentor?

[nate-double-u]

Would it be ok if I'm the only mentor?

Thanks, I think it'll be fine in this case, thanks for clarifying 😊

[nate-double-u]

Sorry i missed this @ArthurSens, is there an upstream issue for UX Research: How users expect to use OTLP Resource Attributes in Prometheus? Or something I can use to point to when I open the LFX project?

[ArthurSens]

Yeah.... I wasn't sure what to put over there. The reality is that we've already implemented something to handle Resource attributes. Still, as people started to use it we're facing several minor UX problems for so many personas of Prometheus users. I think the most generic one is this prometheus/prometheus#12629, but it doesn't list all our UX problems.

What is the goal of the issue? To be a place where candidates can learn more about the problem? Or to fulfill a form? If we just need to put something out there, let's use the one above. If it's supposed to give information about the problems, I'd recommend reading:

• https://opentelemetry.io/docs/specs/otel/compatibility/prometheus_and_openmetrics/
• A talk from PromCon 2023: Towards making Prometheus OpenTelemetry native
• Part of a OTEP (OpenTelemetry Enhancement Proposals) that focus on Prometheus/ResourceAttributes/Entities

I think this still doesn't list all the problems, which I hope the research will do a better job at, but it could be a good starting point :)

[nate-double-u]

2 things: it gives me something to link to when I create the project over on LFX, and it's good practice to have a place where folks can discuss the project during the application phase, and where you can discuss design and development during the program. If you don't have a dedicated upstream issue i've found that folks will ask about the mentorship in random places, and that can be hard to manage.

WasmEdge has some good examples: WasmEdge LFX Mentorship issues

[ArthurSens]

I see! We definitely need to organize our work on the Prometheus side, I'll try to come up with ideas with the team to have something similar to what WasmEdge has. Today we kinda come up with ideas at the last minute and we don't get much prepared in advance :(

I've just created this one: prometheus/prometheus#15909. I'll try to organize things in advance for the next ones!

[nate-double-u]

Thanks! I'll use that issue, and will update the file.