Logs in UTC time

[chair28980]

Proposing switching logs to use UTC time, this would simplify the debugging process by providing a consistent time reference.

[richard-ramos]

:-O i did not realize this task had already been assigned to @igor-sirotin
Sorry!

[chair28980]

Fixed by status-im/go-ethereum#108

[igor-sirotin]

@jrainville I looked at the logs of the app we write from Nim. Local time is used there, not UTC.

But it seems that we don't really have control over this. nim-chronicles provide option to change the format of the timestamps (RFC 3339, Unix, None):
https://github.com/status-im/nim-chronicles/blob/33761a5f77610d3f87f774244490eae43a9ac5a1/README.md?plain=1#L376-L397

But it's always local time, this can be seen with usage of now() here:
https://github.com/status-im/nim-chronicles/blob/ccbb7566d1a06bfc1ec42dd8da74a47f1d3b3f4b/chronicles/log_output.nim#L425-L427

I don't think it's very important to have UTC in application logs, so far it was never a problem. It will be our of sync now with geth.log, but I guess we can live with that?

[fryorcraken]

I'd suggest UTC across all logs as we need to be able to correlate app events to Waku events. More intense debugging means it's a problem now.

[igor-sirotin]

@jrainville should we mark this as blocked or smth?
I didn't investigate, but don't see a simple workaround until status-im/nim-chronicles#151 is implemented.

[chaitanyaprem]

nwaku logs time in UTC, so maybe we can check with them how it is done. iirc chronicles-logging only must be used there.
cc @Ivansete-status , maybe you can help how it is done using nim-chronicles

[igor-sirotin]

@Ivansete-status would be great if you share how it's done in nwaku, if it is like that indeed !

[Ivansete-status]

@chaitanyaprem , @igor-sirotin - the nwaku is not printing in UTC. Instead, it prints from the local time. What is happening is that the fleets' hosts have the local time set to UTC and therefore, nwaku gets that time zone.

I've submitted the following PR in nim-chronicles to allow printing in UTC regardless the local zone: status-im/nim-chronicles#152

To use it, the following compilation flag should be added: -d:chronicles_timestamps="UnixTimeReadable"

[igor-sirotin]

I've submitted the following PR in nim-chronicles

Thank you!

[Ivansete-status]

Hello @igor-sirotin , @chaitanyaprem - the time can be expressed now in UTC from nim-chronicles. Please update to the latest. Then, to enable the UTC time, the following compilation setting should be used: -d:chronicles_timestamps="RfcUtcTime".