#[cfg(feature = "fern")] pub fn init_logger( min_level: log::LevelFilter, debug_file_name: &std::ffi::OsStr, ) -> Result<(), fern::InitError> { fern::Dispatch::new() .format(|out, message, record| { out.finish(format_args!( "{}[{}][{}] {}", chrono::Local::now().format("[%Y-%m-%d][%H:%M:%S:%f]"), record.target(), record.level(), message )) }) .level(min_level) .chain(fern::log_file(debug_file_name)?) .apply()?; Ok(()) }