Robin Mueller
27 lines
921 B
Rust
27 lines
921 B
Rust
use std::str::FromStr as _;
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pub fn setup_logger() -> Result<(), fern::InitError> {
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// Read the RUST_LOG environment variable and parse it.
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// If the variable is not set or is invalid, default to Debug.
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let mut log_level = log::LevelFilter::Info;
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if let Ok(log_level_str) = std::env::var("RUST_LOG") {
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log_level = log::LevelFilter::from_str(&log_level_str).unwrap_or(log::LevelFilter::Info);
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}
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fern::Dispatch::new()
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.format(|out, message, record| {
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out.finish(format_args!(
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"{}[{}][{}] {}",
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chrono::Local::now().format("[%Y-%m-%d][%H:%M:%S]"),
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std::thread::current().name().expect("unnamed_thread"),
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record.level(),
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message
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))
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})
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.level(log_level)
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.chain(std::io::stdout())
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.chain(fern::log_file("output.log")?)
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.apply()?;
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Ok(())
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}
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