healthz: Add healthz endpoint (#21)

Author: DolceTriade

blade/main.rs

@@ -243,6 +243,7 @@ cfg_if! {
                     .service(Files::new("/assets", assets.clone()))
                     // serve the favicon from /favicon.ico
                     .service(favicon)
+                    .service(healthz)
                     .leptos_routes_with_context(
                         routes,
                         move|| provide_context(rt_state.clone()),
@@ -291,6 +292,11 @@ cfg_if! {
             Ok(actix_files::NamedFile::open(r.rlocation("_main/blade/static/static/favicon.ico").unwrap())?)
         }
 
+        #[get("/healthz")]
+        async fn healthz() -> HttpResponse {
+            HttpResponse::Ok().body("OK")
+        }
+
         #[instrument]
         async fn periodic_cleanup(global: Arc<state::Global>) {
             let day = std::time::Duration::from_secs(60 * 60 * 24);