Implement Clone for RouterIntoService (#2456)

Author: bryanburgers

axum/CHANGELOG.md

@@ -12,12 +12,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - **change:** Update tokio-tungstenite to 0.21 ([#2435])
 - **added:** Enable `tracing` feature by default ([#2460])
 - **added:** Support graceful shutdown on `serve` ([#2398])
+- **added:** `RouterIntoService` implements `Clone` ([#2456])
 
 [#2411]: https://github.com/tokio-rs/axum/pull/2411
 [#2433]: https://github.com/tokio-rs/axum/pull/2433
 [#2435]: https://github.com/tokio-rs/axum/pull/2435
 [#2460]: https://github.com/tokio-rs/axum/pull/2460
 [#2398]: https://github.com/tokio-rs/axum/pull/2398
+[#2456]: https://github.com/tokio-rs/axum/pull/2456
 
 # 0.7.2 (03. December, 2023)
 

axum/src/routing/mod.rs

@@ -515,6 +515,18 @@ pub struct RouterIntoService<B, S = ()> {
     _marker: PhantomData<B>,
 }
 
+impl<B, S> Clone for RouterIntoService<B, S>
+where
+    Router<S>: Clone,
+{
+    fn clone(&self) -> Self {
+        Self {
+            router: self.router.clone(),
+            _marker: PhantomData,
+        }
+    }
+}
+
 impl<B> Service<Request<B>> for RouterIntoService<B, ()>
 where
     B: HttpBody<Data = bytes::Bytes> + Send + 'static,