Update concentratord runtime stats_interval with the configured gateway stats_interval from a GatewayConfiguration ChirpStack message

[nicolas-juteau]

• [x] I have searched the issues of this repository and believe that this is not a duplicate.

Summary

ChirpStack already relays the configured gateway stats_interval in a GatewayConfiguration message sent to concentratord. However, concentratord just seem to silently ignore the stats_interval and simply proceeds to channel reconfiguration, if required.

What is the use-case?

• For gateways with cellular back-haul, having the possibility to remotely finetune the heartbeat message interval would be incredibly useful
• There are situations in which reducing the heartbeat message interval temporarily would be useful (gateway installation, gateway servicing) as the heartbeat message also exposes dynamic metadatas/commands outputs that can carry insight about the gateway operational status

Implementation description

Looks like updating config.concentratord.stats_interval with the received new_config.stats_interval in function update_configuration of files src/handler/config.rs would do the trick.

I don't know why it is not already done in the first place.

Can you implement this by yourself and make a pull request?

Yes. However, my rust knowledge is rusty (aka non-existent) and it would without a doubt be cleaner if done by knowledged rust developer

[brocaar]

Thanks for reporting, the above commit fixes this.