Better file reading

[Cinojose]

Fixing a couple of issues

1. Time parsing, some can be 8digits and it fails
2. Latest guide says Time is not present in the jsonl file structure
3. Exporter fails when the jsonl file gets rotated, adding a support for live tail

I've been running this patch for sometime and so far it works well.

Thanks for the exporter btw 👍

[abower-amd]

Hi @Cinojose,

With many thanks to @natesales for leading the way with this exporter, we have now built OpenMetrics stats exporting directly into sfptpd. There are some differences in our implementation. Please do take a look, give it a try and let us know if you have any suggestions for changes.

[Cinojose]

@abower-amd great news! let me play around with the new sfptpd and let you know how it goes.

[abower-amd]

@abower-amd great news! let me play around with the new sfptpd and let you know how it goes.

Great @Cinojose - thanks for letting us know, I hope it works well for you! Do let us know on the repository if you have any feedback.

Today we've also pushed built-in TCP listener support so you don't need to proxy the unix domain socket. You need to enable this with, for example, openmetrics_tcp [::] or openmetrics_tcp 127.0.0.1. You can specify an ACL but probably a good idea to use a firewall if exporting TCP directly.