#log #ndjson #logger #logging #pretty-print

femme

Not just a pretty (inter)face: pretty-printer and ndjson logger for log crate

10 stable releases

2.2.1 May 9, 2022
2.2.0 Apr 5, 2022
2.1.2 Dec 4, 2020
2.1.1 Aug 10, 2020
1.1.0 Jul 20, 2019

#145 in Debugging

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154,902 downloads per month
Used in 53 crates (40 directly)

MIT/Apache

570KB
218 lines

femme

crates.io version build status downloads docs.rs docs

Not just a pretty (inter)face.

A pretty-printer and ndjson logger for the log crate.

Examples

use kv_log_macro as log;

femme::with_level(femme::LevelFilter::Trace);
log::warn!("Unauthorized access attempt on /login");
log::info!("Listening on port 8080");

Prettified output will be displayed when debugging. In release mode, this logger will output to ndjson.

When using Wasm with #[cfg(target_arch = "wasm32")], Wasm logger will be used. Wasm logger uses web_sys crate to send console.log() to JavaScript.

Screenshots

Pretty Output

pretty printed logs

Newline Delimited JSON

ndjson

Installation

$ cargo add femme

License

MIT OR Apache-2.0

Dependencies

~1–4MB
~80K SLoC