Function env_logger::builder

source · 
pub fn builder() -> Builder
Expand description

Create a new builder with the default environment variables.

The builder can be configured before being initialized. This is a convenient way of calling Builder::from_default_env.

Examples found in repository?
examples/syslog_friendly_format.rs (line 5)
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

fn main() {
    match std::env::var("RUST_LOG_STYLE") {
        Ok(s) if s == "SYSTEMD" => env_logger::builder()
            .format(|buf, record| {
                writeln!(
                    buf,
                    "<{}>{}: {}",
                    match record.level() {
                        log::Level::Error => 3,
                        log::Level::Warn => 4,
                        log::Level::Info => 6,
                        log::Level::Debug => 7,
                        log::Level::Trace => 7,
                    },
                    record.target(),
                    record.args()
                )
            })
            .init(),
        _ => env_logger::init(),
    };
}