Is it possible to have date/time in log file name.

[madelaney]

I was wondering if it was possible, when using a YAML configuration, to have the date/time inserted as the file name when configuring a file appender?

here is an example, where {d} would be a place holder for the datetime:

refresh_rate: 30 seconds
appenders:
  instance:
    kind: file
    path: "log/run-{d}.log"
root:
  level: info
  appends:
  - instance

/shrug

• Mike D.

[ekafe]

I am also looking for the solution, did you figure our any solution.

[estk]

@madelaney this is not currently possible. I would be happy to mentor you if you would like to develop the feature.

[jporwal05]

Hi @estk ! I can pick this up under your mentorship.

[DenuxPlays]

Any updates on this?
This is like a key features for log-files

[puli1027]

Can anyone complete this function？

[Creative-Difficulty]

@estk Updates?

[DenuxPlays]

@estk Updates?

I Switched to tracing.
Here is my configuration:

https://github.com/financrr/financrr-app/blob/main/backend/backend/src/config/logger.rs

It's still not the bested (especially compared to logback what I use in all my Java projects) but it's good enough.

[aonyx45]

I'd definitely need this feature too. Would be gladly appreciated.

[TuEmb]

I have a workaround for that at: https://github.com/TuEmb/log4rs

The format will be the same as chrono::datetime

    file:
        kind: file
        path: "log/file-{%Y-%m-%d_%H-%M-%S}.log"
        encoder:
            pattern: "[{d(%Y-%m-%dT%H:%M:%S%.6f)} {h({l}):<5.5} {M}] {m}{n}"

run example:
cargo run --example compile_time_config

output: