Implement FromRequestParts for Parts and Extensions

Fixes #2320

Author: davidpdrsn

axum-core/src/extract/request_parts.rs

@@ -2,7 +2,7 @@ use super::{rejection::*, FromRequest, FromRequestParts, Request};
 use crate::{body::Body, RequestExt};
 use async_trait::async_trait;
 use bytes::Bytes;
-use http::{request::Parts, HeaderMap, Method, Uri, Version};
+use http::{request::Parts, Extensions, HeaderMap, Method, Uri, Version};
 use http_body_util::BodyExt;
 use std::convert::Infallible;
 
@@ -115,14 +115,26 @@ where
 }
 
 #[async_trait]
-impl<S> FromRequest<S> for Parts
+impl<S> FromRequestParts<S> for Parts
 where
     S: Send + Sync,
 {
     type Rejection = Infallible;
 
-    async fn from_request(req: Request, _: &S) -> Result<Self, Self::Rejection> {
-        Ok(req.into_parts().0)
+    async fn from_request_parts(parts: &mut Parts, _state: &S) -> Result<Self, Self::Rejection> {
+        Ok(parts.clone())
+    }
+}
+
+#[async_trait]
+impl<S> FromRequestParts<S> for Extensions
+where
+    S: Send + Sync,
+{
+    type Rejection = Infallible;
+
+    async fn from_request_parts(parts: &mut Parts, _state: &S) -> Result<Self, Self::Rejection> {
+        Ok(parts.extensions.clone())
     }
 }
 

axum/CHANGELOG.md

@@ -69,6 +69,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - **breaking:** `impl<T> IntoResponse(Parts) for Extension<T>` now requires
   `T: Clone`, as that is required by the http crate ([#1882])
 - **added:** Add `axum::Json::from_bytes` ([#2244])
+- **added:** Implement `FromRequestParts` for `http::request::Parts` ([#2328])
+- **added:** Implement `FromRequestParts` for `http::Extensions` ([#2328])
 
 [#1664]: https://github.com/tokio-rs/axum/pull/1664
 [#1751]: https://github.com/tokio-rs/axum/pull/1751
@@ -91,6 +93,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [#2143]: https://github.com/tokio-rs/axum/pull/2143
 [#2149]: https://github.com/tokio-rs/axum/pull/2149
 [#2244]: https://github.com/tokio-rs/axum/pull/2244
+[#2328]: https://github.com/tokio-rs/axum/pull/2328
 
 # 0.6.17 (25. April, 2023)