Add tracing.

src/main.rs

@@ -3,13 +3,23 @@ use axum::routing::get;
 use axum::Json;
 use axum::Router;
 use serde::Serialize;
+use tracing_subscriber::layer::SubscriberExt;
+use tracing_subscriber::util::SubscriberInitExt;
 
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    tracing_subscriber::registry()
+        .with(
+            tracing_subscriber::EnvFilter::try_from_default_env().unwrap_or_else(|_| {
+                "webhook_bridge=info,tower_http=debug,axum::rejection=trace".into()
+            }),
+        )
+        .with(tracing_subscriber::fmt::layer())
+        .init();
     let app = Router::new().route("/health", get(health));
 
     let listener = tokio::net::TcpListener::bind("0.0.0.0:8080").await?;
-    println!("Listening on port 8080. Pop open your browser to http://127.0.0.1:8080/ .");
+    tracing::info!("listening on {}", listener.local_addr().unwrap());
     axum::serve(listener, app).await?;
     Ok(())
 }