Sources: collect metrics

[dmorn]

Collect metrics about source usage. As soon as it is not enough to just override real time values, consider adding a sort of "metrics broker", which will send the metrics collected to an entity that will store and allow to retrieve & analyse them.

We could use:

• Prometheus for the storage
• Prometheus client as metrics broker
• Grafana as analysis tool, but it is not mandatory as prometheus exposes an HTTP API to retrieve the metrics, so we can also build our own tool.

@PerkmannM @philipgiuliani

[dmorn]

Some metrics that we want to retrieve

• avg download speed
• avg upload speed
• number of bytes downloaded
• number of bytes uploaded

With the possibility to scope the result by

• source
• connection

@philipgiuliani