Log file name style

[zuston]

About logforth's log file name style, is it possible to be aligned with the log4j's style. Like the following screenshot

Nit: the latest log name is always be the xxx.log , that will make user easy to get the latest log file.

[zuston]

cc @tisonkun

[tisonkun]

Sounds reasonable. Would you like to submit a patch?

[zuston]

Sounds reasonable. Would you like to submit a patch?

Sure.

[tisonkun]

@zuston could you provide a link to how log4j (and perhaps logback) name their files?

I'm feeling that it's a bit complex when we have two demisions in consider: datetime and num (rotated by size).

That said, we can of course have:

server.log
server.log.1
server.log.2
...

and

server.2025-08.log
server.2025-08.log.1
server.2025-09.log

In the second situation, we have two .log files without any number. And sorting these files can be a bit complex if you want it.

[zuston]

could you provide a link to how log4j (and perhaps logback) name their files?

https://logging.apache.org/log4j/2.x/manual/appenders/rolling-file.html#RolloverStrategy-index

I'm feeling that it's a bit complex when we have two demisions in consider: datetime and num (rotated by size).

+1. I'm not sure whether logforth could provide a pluggable rolling policy, that means I could implement it by myself if logforth don't want to maintain this.

[tisonkun]

More refs -

• https://logback.qos.ch/manual/appenders.html#SizeAndTimeBasedRollingPolicy

[tisonkun]

We'll

1. Rename filename_prexfix to filename and make it required.
2. Calculate the highest counter value and set current_count.
3. Make the current file name <filename>.<filename_suffix>
4. Create <filename>.<date>.<cnt>.<filename_suffix> on rolling over.