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pub struct WorkerLayer {
level: tracing::Level,
}
impl WorkerLayer {
pub fn new(level: tracing::Level) -> Self {
Self { level }
}
}
impl<S: tracing::Subscriber> tracing_subscriber::Layer<S> for WorkerLayer {
fn on_event(
&self,
event: &tracing::Event<'_>,
_ctx: tracing_subscriber::layer::Context<'_, S>,
) {
if event.metadata().level() > &self.level {
return;
}
let level = event.metadata().level();
let target = event.metadata().target();
let name = event.metadata().name();
let fields = event.metadata().fields();
worker::console_log!("[{level}] [{target}] [{name}] {fields}");
}
}
static INIT: std::sync::Once = std::sync::Once::new();
pub fn init(env: &worker::Env) {
use tracing_subscriber::prelude::*;
INIT.call_once(|| {
let level = env
.secret("RUST_LOG")
.map(|s| s.to_string())
.unwrap_or("info".to_string())
.parse::<tracing::Level>()
.unwrap_or(tracing::Level::INFO);
let subscriber = tracing_subscriber::registry()
.with(tracing_subscriber::fmt::layer())
.with(WorkerLayer::new(level));
tracing::subscriber::set_global_default(subscriber).unwrap();
});
}