Add trace endpoint for testing traces

src/main.rs

@@ -37,6 +37,10 @@ async fn stats(Path(rsn): Path<String>) -> impl IntoResponse {
     (StatusCode::OK, convert_into_metrics(resp))
 }
 
+async fn get_trace() -> impl IntoResponse {
+    let trace_id = axum_tracing_opentelemetry::find_current_trace_id();
+    axum::Json(serde_json::json!({ "my_trace_id": trace_id }))
+}
 
 #[tokio::main]
 async fn main() -> Result<(), BoxError> {
@@ -45,6 +49,7 @@ async fn main() -> Result<(), BoxError> {
     let app = Router::new()
         .route("/worlds", get(worlds))
         .route("/stats/:rsn", get(stats))
+        .route("/trace", get(get_trace))
         .layer(response_with_trace_layer())
         .layer(opentelemetry_tracing_layer());