akka-http integration

[rpankajakshan]

I am currently using
https://github.com/MonsantoCo/kamon-prometheus
which provides a way to integrate with akka-http. It will be nice to have the same feature in this module.

Regards

[StephenKing]

What are you missing?

[rpankajakshan]

I need to be able to run the prometheus endpoint on the same port as of the host server not a different one.

[ivantopo]

That is possible at the moment. Take a look here, that is there precisely to allow for these cases in which you want to just expose the Prometheus data through some different route/toolkit in your app.

You will still have to create and add the PrometheusReporter instance to Kamon, but you can keep a reference to that reporter instance and call scrapeData() to get the actual String that should be exposed, then publish in whatever way your HTTP framework allows you.

Out of curiosity, on what are you planning to expose this? Play? Akka HTTP or some other? Maybe we should put up a example on how to do this.

[rpankajakshan]

@ivantopo thanks for the pointer. I am using akka http server

[Camsteack]

Hi,

I am trying to do the same but there doesn't seem to be a way to do that without having to start the embedded server even if you are not using it ? When I add the configuration not to start the embedded server I am not getting any data from scrapeData()

Is there a way to get data without have to start the server ? Many thanks

[thjaeckle]

I am interested in the same as @Camsteack
Did you figure it out? Is there a possibility to exclude the "nanohttpd" dependency and still get the metrics?

[eshepelyuk]

@rpankajakshan why is this closed ?
The need for separate embedded server to just expose metrics is definately an overhead. It should be possible to expose metrics via application main HTTP engine (akka HTTP for instance).
Or at least it should be possible to exclude nanohttpd dependency from build artifacts.