first refactor

axum_server/src/router.rs

@@ -0,0 +1,27 @@
+use crate::post_parser::parse_post;
+use axum::{extract::MatchedPath, http::Request, routing::get, Router};
+use tower_http::trace::TraceLayer;
+use tracing::info_span;
+
+pub fn get_router() -> Router {
+    Router::new()
+        .route("/", get(|| async { "Hello, World!" }))
+        .route("/blog/:post_id", get(parse_post))
+        .layer(
+            TraceLayer::new_for_http().make_span_with(|request: &Request<_>| {
+                // Log the matched route's path (with placeholders not filled in).
+                // Use request.uri() or OriginalUri if you want the real path.
+                let matched_path = request
+                    .extensions()
+                    .get::<MatchedPath>()
+                    .map(MatchedPath::as_str);
+
+                info_span!(
+                    "http_request",
+                    method = ?request.method(),
+                    matched_path,
+                    some_other_field = tracing::field::Empty,
+                )
+            }),
+        )
+}