Option to add custom field from request

[gitmalong]

Hi!

Given the scenario that I would like to get metrics for requests from a certain basic auth identified user I would need to be able to extract such a field and add it as custom label to the metrics next to labels: endpoint, method, status.

Could that be supported somehow?

Thanks

[Ptrskay3]

I'm afraid that it's currently not possible to extend labels, however I might try to implement it someday. It doesn't seem to be easy that's for sure. If you'd like to customize labels, I'd suggest writing your own middleware, similar to Axum's Prometheus example.