Proposal

Use case. Why is this important?

I would like to export some metrics from a prometheus server upstream to datadog, I'm attempting to use the veneur-prometheus scraper to accomplish this.

Unfortunately it fails because all the metrics return as "untyped".

I found this related issue: #3935

But i find the response condescending and without explanation, the article linked does not seem to answer the question.

Why are all metrics on the federation endpoint typed 'untyped' I assume the types are stored in the prometheus database. I'm only looking to federate a very small number of metrics ( around a dozen.

Is the type not stored and therefore not passable?

“Nice to have” is not a good use case. :)

Bug Report

What did you do?

Call /federate with a narrow query that returns a handful of metrics, but it's description blocks declare the timeseries as 'untyped'

What did you expect to see?
I expect the timeseries types to show up on the federation endpoint.

What did you see instead? Under which circumstances?

'untyped', always.

Environment

Prometheus 2.2.1 on kubernetes

• System information:

NA

• Prometheus version:

v2.2.1

• Alertmanager version:

NA

• Prometheus configuration file:

NA

• Alertmanager configuration file:

NA

• Logs:

insert Prometheus and Alertmanager logs relevant to the issue here