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)```rust
extern crate simplelog;
use simplelog::{Config, TermLogger, WriteLogger, CombinedLogger, LogLevelFilter};
use std::fs::File;
fn main() { CombinedLogger::init( vec![ TermLogger::new(LogLevelFilter::Warn, Config::default()), WriteLogger::new(LogLevelFilter::Info, Config::default(), File::create("myrustbinary.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 v0.1.0 (file:///home/drakulix/Projects/simplelog)
Running `target/debug/examples/usage`
[ERROR] Bright red error
and myrustbinary.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 = "^0.4.0"
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.