refactor: into crates

Signed-off-by: kjuulh <contact@kjuulh.io>

crates/hyperlog/src/server.rs

@@ -0,0 +1,42 @@
+use std::{net::SocketAddr, sync::Arc};
+
+use axum::{extract::MatchedPath, http::Request, routing::get, Router};
+use tower_http::trace::TraceLayer;
+
+use crate::state::{self, SharedState, State};
+
+async fn root() -> &'static str {
+    "Hello, hyperlog!"
+}
+
+pub async fn serve(host: SocketAddr) -> anyhow::Result<()> {
+    let state = SharedState(Arc::new(State::new().await?));
+
+    let app = Router::new()
+        .route("/", get(root))
+        .with_state(state.clone())
+        .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);
+
+                tracing::info_span!(
+                    "http_request",
+                    method = ?request.method(),
+                    matched_path,
+                    some_other_field = tracing::field::Empty,
+                )
+            }), // ...
+        );
+
+    tracing::info!("listening on {}", host);
+    let listener = tokio::net::TcpListener::bind(host).await.unwrap();
+    axum::serve(listener, app.into_make_service())
+        .await
+        .unwrap();
+    Ok(())
+}