use chrono::Local;
use log::{Level, Log, Metadata, Record, SetLoggerError};
struct Logger {
level: Level,
target: &'static str,
}
impl Log for Logger {
fn enabled(&self, metadata: &Metadata) -> bool {
metadata.level() <= self.level
}
fn log(&self, record: &Record) {
if self.enabled(record.metadata()) {
let target = if let Some(module) = record.module_path()
&& let Some(last) = module.split("::").last()
&& !self.target.ends_with(&format!("::{last}"))
{
format!("{}::{}", self.target, last)
} else {
self.target.to_string()
};
eprintln!(
"{} {:<5} [{}] {}",
Local::now().format("%Y-%m-%dT%H:%M:%S.%3f"),
record.level().to_string(),
target,
record.args()
);
}
}
fn flush(&self) {}
}
pub fn init_with_level(level: Level, target: &'static str) -> Result<(), SetLoggerError> {
let logger = Logger { level, target };
log::set_boxed_logger(Box::new(logger))?;
log::set_max_level(level.to_level_filter());
Ok(())
}