feat: add churn v2

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

crates/churn/src/api.rs

@@ -0,0 +1,65 @@
+use std::net::SocketAddr;
+
+use axum::{extract::MatchedPath, http::Request, routing::get, Router};
+use tokio_util::sync::CancellationToken;
+use tower_http::trace::TraceLayer;
+
+use crate::state::SharedState;
+
+pub struct Api {
+    state: SharedState,
+    host: SocketAddr,
+}
+
+impl Api {
+    pub fn new(state: impl Into<SharedState>, host: impl Into<SocketAddr>) -> Self {
+        Self {
+            state: state.into(),
+            host: host.into(),
+        }
+    }
+
+    pub async fn serve(&self) -> anyhow::Result<()> {
+        let app = Router::new()
+            .route("/", get(root))
+            .with_state(self.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 {}", self.host);
+        let listener = tokio::net::TcpListener::bind(&self.host).await.unwrap();
+        axum::serve(listener, app.into_make_service())
+            .await
+            .unwrap();
+
+        Ok(())
+    }
+}
+
+async fn root() -> &'static str {
+    "Hello, churn!"
+}
+
+#[async_trait::async_trait]
+impl notmad::Component for Api {
+    async fn run(&self, _cancellation_token: CancellationToken) -> Result<(), notmad::MadError> {
+        self.serve().await.map_err(notmad::MadError::Inner)?;
+
+        Ok(())
+    }
+}