Structured Logging for Janet (text and JSON)

[dlisboa]

Hey everyone. I made an implementation of structured logging for Janet, with support for JSON logs. It follows on some of the ideas of Go's implementation of slog. Also stole a little bit from @swlkr joy framework.

https://github.com/dlisboa/janet-slog

It was quite fun to make. Let me know if there are any improvements. Contributions welcome!

[sogaiu]

Only have some minor remarks (^^;

• I guess ATM buffers and files are supported for logging, but I suppose it might be possible to make it work with things that support a write "method" as that is supported by streams and other things...
• May be def would be fine here and here?
• tuple is a built-in function and it's shadowed in format-text -- may be it doesn't matter

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Peripheral thing: IIUC, joy's author is actually swlkr

[dlisboa]

Thanks @sogaiu !

Maybe you can help me with the first part:

• That was actually my original idea, but I got confused with how to implement a general interface for them. Files and streams both have :write, but files will not flush automatically, so I'd have to call :flush, but streams do flush (are unbuffered), and they don't implement :flush anyway. Also, stdout is a core/file but if I :write to it it's automatically flushed (:flush would just no-op but it's a bit confusing). And buffers support neither, though they're useful mostly for testing I'd still like to use them so there's no cleanup necessary.
• Great, nice catch.
• Indeed, I was aware of it, I just preferred the full descriptive name since the function won't be called there

Sorry @swlkr! Fixed it.

[sogaiu]

Not sure of an elegant way to manage things, but may be checking for the existence of flush for a "thing" and deciding what to do based on the result might be applied?

$ janet
Janet 1.29.1-8183cc5a linux/x64/gcc - '(doc)' for help

repl:1:> (def f (file/temp))
<core/file 0x564FC69B0480>

repl:2:> (get f :flush)
<cfunction file/flush>

repl:3:> (get f :non-method)
nil