Number of Jobs in queue (waiting for free agents) in Agent Pool

[AlbMor]

Hi

We started to use this Azure DevOps exporter and it is working really well.

We need to have the information on how many jobs are in queue in real time (waiting for a free Agent) per Agent Pool.

We looked to get it but we did not find a way also combining different others metrics

Is it possible to get this metric?

Could you help us on that?

Thanks

Alberto

[mblaschke]

Hm.. is there an rest api for that?
There are a lot of APIs which Azure DevOps uses but they are closed and not documented :(

[AlbMor]

Hi

I am not aware of such Rest API

Maybe we can extrapolate the number of waiting for Agent with a formula

Number of jobs Wating for Agent in a Pool= Number of Jobs requests in the Pool - Number of Agents in the Pool

So We just need

Number of Jobs requests in the Pool

and

Number of Agents in the Pool

Do we have such a metrics now?

I think Number of Agents in the Pool is the azure_devops_agentpool_size

but do we have Number of Jobs requests in the Pool metric?

Please let me know if you have some ideas

Thanks

[AlbMor]

Hi Again,

I found this Rest API

https://{organization}.visualstudio.com/_apis/distributedtask/pools/{poolid}/jobrequests

is returning the jobrequests for specific pool in JSON format

In the JSON result, each build have some properties, if the build started to run on an agent it gets a property assignTime, so If we don´t have this property it means the job is waiting

We can count how many of those jobs without the property assignTime are present for a specific pool

What do you think?

Please let me know if it is feasable

Thanks

Alberto

[ScottGuymer]

@AlbMor I ran into the same need so I had a little go at adding this in #18

Reviews would be very much appreciated.

[AlbMor]

We have now a metric doing that
azure_devops_agentpool_queue_length
Thanks

[ruskinb1]

Could anyone please help on that, How we can setup prometheus for only this use case.