simplelog
does not aim to provide a rich set of features, nor to provide the best logging solution. It aims to be a maintainable, easy to integrate facility for small to medium sized projects, that find env_logger to be somewhat lacking in features. In those cases simplelog
should provide an easy alternative.
simplelog
provides a series of logging facilities, that can be easily combined.
SimpleLogger
(very basic logger that logs to stderr/out, should never fail)TermLogger
(advanced terminal logger, that splits to stderr/out and has color support) (can be excluded on unsupported platforms)WriteLogger
(logs to a given struct implementing Write
. e.g. a file)CombinedLogger
(can be used to form combinations of the above loggers)#[macro_use] extern crate log; extern crate simplelog; use simplelog::*; use std::fs::File; fn main() { CombinedLogger::init( vec![ TermLogger::new(LevelFilter::Warn, Config::default(), TerminalMode::Mixed).unwrap(), WriteLogger::new(LevelFilter::Info, Config::default(), File::create("my_rust_binary.log").unwrap()), ] ).unwrap(); error!("Bright red error"); info!("This only appears in the log file"); debug!("This level is currently not enabled for any logger"); }
$ cargo run --example usage Compiling simplelog v0.7.6 (file:///home/drakulix/Projects/simplelog) Running `target/debug/examples/usage` [ERROR] Bright red error
and my_rust_binary.log
11:13:03 [ERROR] usage: Bright red error 11:13:03 [ INFO] usage: This only appears in the log file
Just add
[dependencies] simplelog = "^0.7.6"
to your Cargo.toml
If you wish to contribute your own logger to simplelog
or advance/extend existing loggers, feel free to create a pull request. Just don't blindly assume, that your logger will be accepted. The rational about this library is, that it is simple to use. This mostly comes down to a small and easy API, but also includes things like the amount of added dependencies. If you feel unsure about your plans, feel free to create an issue to talk about your ideas.