44 lines
1.7 KiB
Rust
44 lines
1.7 KiB
Rust
use std::str::FromStr;
|
|
use tracing_subscriber::{fmt, prelude::*};
|
|
|
|
#[allow(unused)]
|
|
pub use tracing::{debug, error, info, warn};
|
|
|
|
/// Initialize the logger with the RUST_LOG environment variable.
|
|
pub fn init_logger() {
|
|
let level_string = std::env::var("RUST_LOG").unwrap_or_else(|_| "info".to_string());
|
|
let level = tracing::Level::from_str(level_string.as_str()).unwrap_or(tracing::Level::INFO);
|
|
|
|
// This limits the logger to emits only this crate with any level above RUST_LOG, for included crates it will emit only ERROR (in prod)/INFO (in dev) or above level.
|
|
let stdio_layer = fmt::layer().with_level(true).with_thread_ids(false);
|
|
if level <= tracing::Level::INFO {
|
|
// in normal deployment environment
|
|
let stdio_layer = stdio_layer
|
|
.with_target(false)
|
|
.compact()
|
|
.with_filter(tracing_subscriber::filter::filter_fn(move |metadata| {
|
|
(metadata
|
|
.target()
|
|
.starts_with(env!("CARGO_PKG_NAME").replace('-', "_").as_str())
|
|
&& metadata.level() <= &level)
|
|
|| metadata.level() <= &tracing::Level::WARN.min(level)
|
|
}));
|
|
tracing_subscriber::registry().with(stdio_layer).init();
|
|
} else {
|
|
// debugging
|
|
let stdio_layer = stdio_layer
|
|
.with_line_number(true)
|
|
.with_target(true)
|
|
.with_thread_names(true)
|
|
.with_target(true)
|
|
.compact()
|
|
.with_filter(tracing_subscriber::filter::filter_fn(move |metadata| {
|
|
(metadata
|
|
.target()
|
|
.starts_with(env!("CARGO_PKG_NAME").replace('-', "_").as_str())
|
|
&& metadata.level() <= &level)
|
|
|| metadata.level() <= &tracing::Level::INFO.min(level)
|
|
}));
|
|
tracing_subscriber::registry().with(stdio_layer).init();
|
|
};
|
|
}
|