Assign different set of labels based on the filepath ?

[DamienCH]

Hello,

I'm banging my heads on the wall with something I'm facing.
My goal is:
Use Grafana Agent Flow as a "gateway", between some apps writing their logs in a fileshare and the backend Loki server.
I need to be able to parse log files from a large set of folders and give the log a set of labels based on the file path.

The devs currently work with X:$Customer$Application$env\logs.
I want to be able to set $Customer, $Application and $env as labels.

Is it doable ?
What's the best way to achieve this, without creating one local.file block per possible combination?

Side/bonus question:
The devs want to have a label for "customer". They currently have 500 and expect it to grow up to 2000 within a couple of years.
That's a terrible idea, right ?

Thanks in advance for your help.