Replace RoutingDsl trait with Router type (#214)

* Remove `RoutingDsl`

* Fix typo

CHANGELOG.md

@@ -10,9 +10,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Overall compile time improvements. If you're having issues with compile time
   please file an issue!
 - Remove `prelude`. Explicit imports are now required.
+- Add dedicated `Router` to replace the `RoutingDsl` trait
 - Make `FromRequest` default to being generic over `body::Body` ([#146](https://github.com/tokio-rs/axum/pull/146))
 - Implement `std::error::Error` for all rejections ([#153](https://github.com/tokio-rs/axum/pull/153))
-- Add `RoutingDsl::or` for combining routes ([#108](https://github.com/tokio-rs/axum/pull/108))
+- Add `Router::or` for combining routes ([#108](https://github.com/tokio-rs/axum/pull/108))
 - Add `handle_error` to `service::OnMethod` ([#160](https://github.com/tokio-rs/axum/pull/160))
 - Add `OriginalUri` for extracting original request URI in nested services ([#197](https://github.com/tokio-rs/axum/pull/197))
 - Implement `FromRequest` for `http::Extensions`
@@ -32,16 +33,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Change WebSocket API to use an extractor ([#121](https://github.com/tokio-rs/axum/pull/121))
 - Make WebSocket `Message` an enum ([#116](https://github.com/tokio-rs/axum/pull/116))
 - `WebSocket` now uses `Error` as its error type ([#150](https://github.com/tokio-rs/axum/pull/150))
-- Ensure a `HandleError` service created from `ServiceExt::handle_error`
-  _does not_ implement `RoutingDsl` as that could lead to confusing routing
   behavior ([#120](https://github.com/tokio-rs/axum/pull/120))
 - Implement `routing::MethodFilter` via [`bitflags`](https://crates.io/crates/bitflags)
 - Removed `extract::UrlParams` and `extract::UrlParamsMap`. Use `extract::Path` instead
 - `EmptyRouter` now requires the response body to implement `Send + Sync + 'static'` ([#108](https://github.com/tokio-rs/axum/pull/108))
-- `ServiceExt` has been removed and its methods have been moved to `RoutingDsl` ([#160](https://github.com/tokio-rs/axum/pull/160))
 - `extractor_middleware` now requires `RequestBody: Default` ([#167](https://github.com/tokio-rs/axum/pull/167))
 - Convert `RequestAlreadyExtracted` to an enum with each possible error variant ([#167](https://github.com/tokio-rs/axum/pull/167))
-- `RoutingDsl::check_infallible` now returns a `CheckInfallible` service. This
+- `Router::check_infallible` now returns a `CheckInfallible` service. This
   is to improve compile times.
 - These future types have been moved
     - `extract::extractor_middleware::ExtractorMiddlewareResponseFuture` moved

examples/async-graphql/src/main.rs

@@ -3,10 +3,7 @@ mod starwars;
 use async_graphql::http::{playground_source, GraphQLPlaygroundConfig};
 use async_graphql::{EmptyMutation, EmptySubscription, Request, Response, Schema};
 use axum::response::IntoResponse;
-use axum::{
-    extract::Extension, handler::get, response::Html, route, routing::RoutingDsl,
-    AddExtensionLayer, Json,
-};
+use axum::{extract::Extension, handler::get, response::Html, route, AddExtensionLayer, Json};
 use starwars::{QueryRoot, StarWars, StarWarsSchema};
 
 async fn graphql_handler(schema: Extension<StarWarsSchema>, req: Json<Request>) -> Json<Response> {

examples/chat/src/main.rs

@@ -11,7 +11,6 @@ use axum::extract::Extension;
 use axum::handler::get;
 use axum::response::{Html, IntoResponse};
 use axum::route;
-use axum::routing::RoutingDsl;
 use axum::AddExtensionLayer;
 use futures::{sink::SinkExt, stream::StreamExt};
 use std::collections::HashSet;

examples/error-handling-and-dependency-injection/src/main.rs

@@ -14,9 +14,7 @@ use axum::{
     handler::{get, post},
     http::{Response, StatusCode},
     response::IntoResponse,
-    route,
-    routing::RoutingDsl,
-    AddExtensionLayer, Json,
+    route, AddExtensionLayer, Json,
 };
 use serde::{Deserialize, Serialize};
 use serde_json::json;

examples/form/src/main.rs

@@ -4,7 +4,7 @@
 //! cargo run -p example-form
 //! ```
 
-use axum::{extract::Form, handler::get, response::Html, route, routing::RoutingDsl};
+use axum::{extract::Form, handler::get, response::Html, route};
 use serde::Deserialize;
 use std::net::SocketAddr;
 

examples/global-404-handler/src/main.rs

@@ -10,7 +10,6 @@ use axum::{
     http::{Response, StatusCode},
     response::Html,
     route,
-    routing::RoutingDsl,
 };
 use std::net::SocketAddr;
 use tower::util::MapResponseLayer;

examples/hello-world/src/main.rs

@@ -4,7 +4,7 @@
 //! cargo run -p example-hello-world
 //! ```
 
-use axum::{handler::get, route, routing::RoutingDsl};
+use axum::{handler::get, route};
 use std::net::SocketAddr;
 
 #[tokio::main]

examples/key-value-store/src/main.rs

@@ -7,13 +7,13 @@
 //! ```
 
 use axum::{
-    body::{Body, Bytes},
+    body::Bytes,
     extract::{ContentLengthLimit, Extension, Path},
     handler::{delete, get, Handler},
     http::StatusCode,
     response::IntoResponse,
     route,
-    routing::{BoxRoute, RoutingDsl},
+    routing::{BoxRoute, Router},
 };
 use std::{
     borrow::Cow,
@@ -108,7 +108,7 @@ async fn list_keys(Extension(state): Extension<SharedState>) -> String {
         .join("\n")
 }
 
-fn admin_routes() -> BoxRoute<Body> {
+fn admin_routes() -> Router<BoxRoute> {
     async fn delete_all_keys(Extension(state): Extension<SharedState>) {
         state.write().unwrap().db.clear();
     }

examples/multipart-form/src/main.rs

@@ -9,7 +9,6 @@ use axum::{
     handler::get,
     response::Html,
     route,
-    routing::RoutingDsl,
 };
 use std::net::SocketAddr;
 

examples/oauth/src/main.rs

@@ -14,9 +14,7 @@ use axum::{
     handler::get,
     http::{header::SET_COOKIE, HeaderMap, Response},
     response::{IntoResponse, Redirect},
-    route,
-    routing::RoutingDsl,
-    AddExtensionLayer,
+    route, AddExtensionLayer,
 };
 use oauth2::{
     basic::BasicClient, reqwest::async_http_client, AuthUrl, AuthorizationCode, ClientId,

examples/sessions/src/main.rs

@@ -15,9 +15,7 @@ use axum::{
         StatusCode,
     },
     response::IntoResponse,
-    route,
-    routing::RoutingDsl,
-    AddExtensionLayer,
+    route, AddExtensionLayer,
 };
 use serde::{Deserialize, Serialize};
 use std::net::SocketAddr;

examples/sse/src/main.rs

@@ -9,7 +9,7 @@ use axum::{
     handler::get,
     http::StatusCode,
     response::sse::{sse, Event, Sse},
-    routing::{nest, RoutingDsl},
+    routing::nest,
 };
 use futures::stream::{self, Stream};
 use std::{convert::Infallible, net::SocketAddr, time::Duration};

examples/static-file-server/src/main.rs

@@ -4,10 +4,7 @@
 //! cargo run -p example-static-file-server
 //! ```
 
-use axum::{
-    http::StatusCode,
-    routing::{nest, RoutingDsl},
-};
+use axum::{http::StatusCode, routing::nest};
 use std::net::SocketAddr;
 use tower_http::{services::ServeDir, trace::TraceLayer};
 

examples/templates/src/main.rs

@@ -12,7 +12,6 @@ use axum::{
     http::{Response, StatusCode},
     response::{Html, IntoResponse},
     route,
-    routing::RoutingDsl,
 };
 use std::{convert::Infallible, net::SocketAddr};
 

examples/testing/src/main.rs

@@ -5,10 +5,9 @@
 //! ```
 
 use axum::{
-    body::Body,
     handler::{get, post},
     route,
-    routing::{BoxRoute, RoutingDsl},
+    routing::{BoxRoute, Router},
     Json,
 };
 use tower_http::trace::TraceLayer;
@@ -34,7 +33,7 @@ async fn main() {
 /// Having a function that produces our app makes it easy to call it from tests
 /// without having to create an HTTP server.
 #[allow(dead_code)]
-fn app() -> BoxRoute<Body> {
+fn app() -> Router<BoxRoute> {
     route("/", get(|| async { "Hello, World!" }))
         .route(
             "/json",
@@ -50,6 +49,7 @@ fn app() -> BoxRoute<Body> {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use axum::body::Body;
     use axum::http::{self, Request, StatusCode};
     use serde_json::{json, Value};
     use std::net::{SocketAddr, TcpListener};

examples/todos/src/main.rs

@@ -18,9 +18,7 @@ use axum::{
     handler::{get, patch},
     http::StatusCode,
     response::IntoResponse,
-    route,
-    routing::RoutingDsl,
-    Json,
+    route, Json,
 };
 use serde::{Deserialize, Serialize};
 use std::{

examples/tokio-postgres/src/main.rs

@@ -9,9 +9,7 @@ use axum::{
     extract::{Extension, FromRequest, RequestParts},
     handler::get,
     http::StatusCode,
-    route,
-    routing::RoutingDsl,
-    AddExtensionLayer,
+    route, AddExtensionLayer,
 };
 use bb8::{Pool, PooledConnection};
 use bb8_postgres::PostgresConnectionManager;

examples/tracing-aka-logging/src/main.rs

@@ -4,7 +4,7 @@
 //! cargo run -p example-tracing-aka-logging
 //! ```
 
-use axum::{handler::get, response::Html, route, routing::RoutingDsl};
+use axum::{handler::get, response::Html, route};
 use std::net::SocketAddr;
 use tower_http::trace::TraceLayer;
 

examples/unix-domain-socket/src/main.rs

@@ -10,7 +10,6 @@ use axum::{
     handler::get,
     http::{Method, Request, StatusCode, Uri},
     route,
-    routing::RoutingDsl,
 };
 use futures::ready;
 use hyper::{

examples/versioning/src/main.rs

@@ -12,7 +12,6 @@ use axum::{
     http::{Response, StatusCode},
     response::IntoResponse,
     route,
-    routing::RoutingDsl,
 };
 use std::collections::HashMap;
 use std::net::SocketAddr;

examples/websockets/src/main.rs

@@ -14,7 +14,7 @@ use axum::{
     handler::get,
     http::StatusCode,
     response::IntoResponse,
-    routing::{nest, RoutingDsl},
+    routing::nest,
 };
 use std::net::SocketAddr;
 use tower_http::{

src/extract/connect_info.rs

@@ -1,8 +1,8 @@
 //! Extractor for getting connection information from a client.
 //!
-//! See [`RoutingDsl::into_make_service_with_connect_info`] for more details.
+//! See [`Router::into_make_service_with_connect_info`] for more details.
 //!
-//! [`RoutingDsl::into_make_service_with_connect_info`]: crate::routing::RoutingDsl::into_make_service_with_connect_info
+//! [`Router::into_make_service_with_connect_info`]: crate::routing::Router::into_make_service_with_connect_info
 
 use super::{Extension, FromRequest, RequestParts};
 use async_trait::async_trait;
@@ -19,10 +19,10 @@ use tower_http::add_extension::AddExtension;
 
 /// A [`MakeService`] created from a router.
 ///
-/// See [`RoutingDsl::into_make_service_with_connect_info`] for more details.
+/// See [`Router::into_make_service_with_connect_info`] for more details.
 ///
 /// [`MakeService`]: tower::make::MakeService
-/// [`RoutingDsl::into_make_service_with_connect_info`]: crate::routing::RoutingDsl::into_make_service_with_connect_info
+/// [`Router::into_make_service_with_connect_info`]: crate::routing::Router::into_make_service_with_connect_info
 pub struct IntoMakeServiceWithConnectInfo<S, C> {
     svc: S,
     _connect_info: PhantomData<fn() -> C>,
@@ -54,9 +54,9 @@ where
 /// The goal for this trait is to allow users to implement custom IO types that
 /// can still provide the same connection metadata.
 ///
-/// See [`RoutingDsl::into_make_service_with_connect_info`] for more details.
+/// See [`Router::into_make_service_with_connect_info`] for more details.
 ///
-/// [`RoutingDsl::into_make_service_with_connect_info`]: crate::routing::RoutingDsl::into_make_service_with_connect_info
+/// [`Router::into_make_service_with_connect_info`]: crate::routing::Router::into_make_service_with_connect_info
 pub trait Connected<T> {
     /// The connection information type the IO resources generates.
     type ConnectInfo: Clone + Send + Sync + 'static;
@@ -104,12 +104,12 @@ opaque_future! {
 /// Extractor for getting connection information produced by a [`Connected`].
 ///
 /// Note this extractor requires you to use
-/// [`RoutingDsl::into_make_service_with_connect_info`] to run your app
+/// [`Router::into_make_service_with_connect_info`] to run your app
 /// otherwise it will fail at runtime.
 ///
-/// See [`RoutingDsl::into_make_service_with_connect_info`] for more details.
+/// See [`Router::into_make_service_with_connect_info`] for more details.
 ///
-/// [`RoutingDsl::into_make_service_with_connect_info`]: crate::routing::RoutingDsl::into_make_service_with_connect_info
+/// [`Router::into_make_service_with_connect_info`]: crate::routing::Router::into_make_service_with_connect_info
 #[derive(Clone, Copy, Debug)]
 pub struct ConnectInfo<T>(pub T);
 
@@ -131,7 +131,7 @@ where
 mod tests {
     use super::*;
     use crate::Server;
-    use crate::{handler::get, route, routing::RoutingDsl};
+    use crate::{handler::get, route};
     use std::net::{SocketAddr, TcpListener};
 
     #[tokio::test]

src/extract/content_length_limit.rs

@@ -13,7 +13,6 @@ use std::ops::Deref;
 ///     extract::ContentLengthLimit,
 ///     handler::post,
 ///     route,
-///     routing::RoutingDsl
 /// };
 ///
 /// async fn handler(body: ContentLengthLimit<String, 1024>) {

src/extract/extension.rs

@@ -14,7 +14,6 @@ use std::ops::Deref;
 ///     extract::Extension,
 ///     handler::get,
 ///     route,
-///     routing::RoutingDsl
 /// };
 /// use std::sync::Arc;
 ///

src/extract/extractor_middleware.rs

@@ -38,7 +38,6 @@ use tower::{BoxError, Layer, Service};
 ///     extract::{extractor_middleware, FromRequest, RequestParts},
 ///     handler::{get, post},
 ///     route,
-///     routing::RoutingDsl
 /// };
 /// use http::StatusCode;
 /// use async_trait::async_trait;

src/extract/form.rs

@@ -18,7 +18,6 @@ use tower::BoxError;
 ///     extract::Form,
 ///     handler::post,
 ///     route,
-///     routing::RoutingDsl
 /// };
 /// use serde::Deserialize;
 ///

src/extract/mod.rs

@@ -12,7 +12,6 @@
 //!     Json,
 //!     handler::{post, Handler},
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use serde::Deserialize;
 //!
@@ -44,7 +43,6 @@
 //!     extract::{FromRequest, RequestParts},
 //!     handler::get,
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use http::{StatusCode, header::{HeaderValue, USER_AGENT}};
 //!
@@ -89,7 +87,6 @@
 //!     extract::{Path, Query},
 //!     handler::get,
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use std::collections::HashMap;
 //!
@@ -122,7 +119,6 @@
 //!     extract::Json,
 //!     handler::post,
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use serde_json::Value;
 //!
@@ -148,7 +144,6 @@
 //!     extract::{Json, rejection::JsonRejection},
 //!     handler::post,
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use serde_json::Value;
 //!
@@ -190,7 +185,6 @@
 //!     extract::Json,
 //!     handler::post,
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use serde_json::Value;
 //!
@@ -224,7 +218,6 @@
 //!     handler::get,
 //!     http::{header::HeaderMap, Request},
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //!
 //! struct MyBody<B>(B);

src/extract/multipart.rs

@@ -24,7 +24,6 @@ use tower::BoxError;
 ///     extract::Multipart,
 ///     handler::post,
 ///     route,
-///     routing::RoutingDsl
 /// };
 /// use futures::stream::StreamExt;
 ///

src/extract/path/mod.rs

@@ -15,7 +15,6 @@ use std::ops::{Deref, DerefMut};
 ///     extract::Path,
 ///     handler::get,
 ///     route,
-///     routing::RoutingDsl
 /// };
 /// use uuid::Uuid;
 ///
@@ -38,7 +37,6 @@ use std::ops::{Deref, DerefMut};
 ///     extract::Path,
 ///     handler::get,
 ///     route,
-///     routing::RoutingDsl,
 /// };
 /// use uuid::Uuid;
 ///
@@ -60,7 +58,6 @@ use std::ops::{Deref, DerefMut};
 ///     extract::Path,
 ///     handler::get,
 ///     route,
-///     routing::RoutingDsl
 /// };
 /// use serde::Deserialize;
 /// use uuid::Uuid;

src/extract/query.rs

@@ -14,7 +14,6 @@ use std::ops::Deref;
 ///     extract::Query,
 ///     handler::get,
 ///     route,
-///     routing::RoutingDsl
 /// };
 /// use serde::Deserialize;
 ///

src/extract/raw_query.rs

@@ -11,7 +11,6 @@ use std::convert::Infallible;
 ///     extract::RawQuery,
 ///     handler::get,
 ///     route,
-///     routing::RoutingDsl
 /// };
 /// use futures::StreamExt;
 ///

src/extract/request_parts.rs

@@ -93,7 +93,7 @@ where
 /// use axum::{
 ///     handler::get,
 ///     route,
-///     routing::{nest, RoutingDsl},
+///     routing::nest,
 ///     extract::OriginalUri,
 ///     http::Uri
 /// };
@@ -175,7 +175,6 @@ where
 ///     extract::BodyStream,
 ///     handler::get,
 ///     route,
-///     routing::RoutingDsl
 /// };
 /// use futures::StreamExt;
 ///
@@ -229,7 +228,6 @@ where
 ///     extract::Body,
 ///     handler::get,
 ///     route,
-///     routing::RoutingDsl,
 /// };
 /// use futures::StreamExt;
 ///

src/extract/typed_header.rs

@@ -15,7 +15,6 @@ use std::{convert::Infallible, ops::Deref};
 ///     extract::TypedHeader,
 ///     handler::get,
 ///     route,
-///     routing::RoutingDsl
 /// };
 /// use headers::UserAgent;
 ///

src/extract/ws.rs

@@ -8,7 +8,6 @@
 //!     handler::get,
 //!     response::IntoResponse,
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //!
 //! let app = route("/ws", get(handler));
@@ -115,7 +114,6 @@ impl WebSocketUpgrade {
     ///     handler::get,
     ///     response::IntoResponse,
     ///     route,
-    ///     routing::RoutingDsl
     /// };
     ///
     /// let app = route("/ws", get(handler));

src/handler/mod.rs

@@ -5,7 +5,7 @@ use crate::{
     extract::FromRequest,
     response::IntoResponse,
     routing::{EmptyRouter, MethodFilter},
-    service::{HandleError, HandleErrorFromRouter},
+    service::HandleError,
     util::Either,
 };
 use async_trait::async_trait;
@@ -34,7 +34,6 @@ pub use self::into_service::IntoService;
 /// use axum::{
 ///     handler::any,
 ///     route,
-///     routing::RoutingDsl
 /// };
 ///
 /// async fn handler() {}
@@ -80,7 +79,6 @@ where
 /// use axum::{
 ///     handler::get,
 ///     route,
-///     routing::RoutingDsl
 /// };
 ///
 /// async fn handler() {}
@@ -170,7 +168,7 @@ where
 /// use axum::{
 ///     handler::on,
 ///     route,
-///     routing::{MethodFilter, RoutingDsl},
+///     routing::MethodFilter,
 /// };
 ///
 /// async fn handler() {}
@@ -237,7 +235,6 @@ pub trait Handler<B, T>: Clone + Send + Sized + 'static {
     /// use axum::{
     ///     handler::{get, Handler},
     ///     route,
-    ///     routing::RoutingDsl
     /// };
     /// use tower::limit::{ConcurrencyLimitLayer, ConcurrencyLimit};
     ///
@@ -415,13 +412,13 @@ impl<S, T> Layered<S, T> {
     /// This is used to convert errors to responses rather than simply
     /// terminating the connection.
     ///
-    /// It works similarly to [`routing::RoutingDsl::handle_error`]. See that for more details.
+    /// It works similarly to [`routing::Router::handle_error`]. See that for more details.
     ///
-    /// [`routing::RoutingDsl::handle_error`]: crate::routing::RoutingDsl::handle_error
+    /// [`routing::Router::handle_error`]: crate::routing::Router::handle_error
     pub fn handle_error<F, ReqBody, ResBody, Res, E>(
         self,
         f: F,
-    ) -> Layered<HandleError<S, F, ReqBody, HandleErrorFromRouter>, T>
+    ) -> Layered<HandleError<S, F, ReqBody>, T>
     where
         S: Service<Request<ReqBody>, Response = Response<ResBody>>,
         F: FnOnce(S::Error) -> Result<Res, E>,
@@ -514,7 +511,7 @@ impl<H, B, T, F> OnMethod<H, B, T, F> {
     /// # Example
     ///
     /// ```rust
-    /// use axum::{handler::post, route, routing::RoutingDsl};
+    /// use axum::{handler::post, route};
     ///
     /// async fn handler() {}
     ///
@@ -607,7 +604,7 @@ impl<H, B, T, F> OnMethod<H, B, T, F> {
     /// use axum::{
     ///     handler::get,
     ///     route,
-    ///     routing::{MethodFilter, RoutingDsl}
+    ///     routing::MethodFilter
     /// };
     ///
     /// async fn handler() {}

src/json.rs

@@ -31,7 +31,6 @@ use tower::BoxError;
 ///     extract,
 ///     handler::post,
 ///     route,
-///     routing::RoutingDsl
 /// };
 /// use serde::Deserialize;
 ///
@@ -61,7 +60,6 @@ use tower::BoxError;
 ///     extract::Path,
 ///     handler::get,
 ///     route,
-///     routing::RoutingDsl,
 ///     Json,
 /// };
 /// use serde::Serialize;

src/lib.rs

@@ -49,7 +49,6 @@
 //! use axum::{
 //!     handler::get,
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //!
 //! #[tokio::main]
@@ -107,7 +106,6 @@
 //! use axum::{
 //!     handler::get,
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //!
 //! let app = route("/", get(get_slash).post(post_slash))
@@ -132,7 +130,7 @@
 //! Routes can also be dynamic like `/users/:id`. See [extractors](#extractors)
 //! for more details.
 //!
-//! You can also define routes separately and merge them with [`RoutingDsl::or`].
+//! You can also define routes separately and merge them with [`Router::or`].
 //!
 //! ## Precedence
 //!
@@ -145,7 +143,6 @@
 //!     handler::get,
 //!     http::Request,
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use tower::{Service, ServiceExt};
 //! use http::{Method, Response, StatusCode};
@@ -212,7 +209,6 @@
 //! use axum::{
 //!     route,
 //!     handler::{get, post},
-//!     routing::RoutingDsl
 //! };
 //!
 //! // `GET /` and `POST /` are both accepted
@@ -237,7 +233,6 @@
 //!     body::Body,
 //!     http::Request,
 //!     route,
-//!     routing::RoutingDsl,
 //!     service
 //! };
 //! use tower_http::services::ServeFile;
@@ -288,12 +283,12 @@
 //!     http::Request,
 //!     handler::get,
 //!     route,
-//!     routing::{BoxRoute, RoutingDsl}
+//!     routing::{BoxRoute, Router}
 //! };
 //! use tower_http::services::ServeFile;
 //! use http::Response;
 //!
-//! fn api_routes() -> BoxRoute<Body> {
+//! fn api_routes() -> Router<BoxRoute> {
 //!     route("/users", get(|_: Request<Body>| async { /* ... */ })).boxed()
 //! }
 //!
@@ -322,7 +317,6 @@
 //!     extract,
 //!     handler::post,
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use serde::Deserialize;
 //!
@@ -353,7 +347,6 @@
 //!     extract,
 //!     handler::post,
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use uuid::Uuid;
 //!
@@ -374,7 +367,6 @@
 //!     extract,
 //!     handler::get,
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use uuid::Uuid;
 //! use serde::Deserialize;
@@ -414,7 +406,6 @@
 //!     handler::post,
 //!     http::Request,
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //!
 //! let app = route("/users/:id", post(handler));
@@ -447,7 +438,6 @@
 //!     http::Request,
 //!     response::{Html, Json},
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use http::{StatusCode, Response, Uri};
 //! use serde_json::{Value, json};
@@ -531,7 +521,6 @@
 //! use axum::{
 //!     handler::{get, Handler},
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use tower::limit::ConcurrencyLimitLayer;
 //!
@@ -554,7 +543,6 @@
 //! use axum::{
 //!     handler::{get, post},
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use tower::limit::ConcurrencyLimitLayer;
 //!
@@ -588,7 +576,6 @@
 //! use axum::{
 //!     handler::{get, Handler},
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use tower::{
 //!     BoxError, timeout::{TimeoutLayer, error::Elapsed},
@@ -631,7 +618,7 @@
 //! return `Result<T, E>` where `T` implements
 //! [`IntoResponse`](response::IntoResponse).
 //!
-//! See [`routing::RoutingDsl::handle_error`] for more details.
+//! See [`routing::Router::handle_error`] for more details.
 //!
 //! ## Applying multiple middleware
 //!
@@ -643,7 +630,6 @@
 //!     handler::get,
 //!     http::Request,
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use tower::ServiceBuilder;
 //! use tower_http::compression::CompressionLayer;
@@ -680,7 +666,6 @@
 //!     extract,
 //!     handler::get,
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use std::sync::Arc;
 //!
@@ -750,7 +735,7 @@
 //! [`IntoResponse`]: crate::response::IntoResponse
 //! [`Timeout`]: tower::timeout::Timeout
 //! [examples]: https://github.com/tokio-rs/axum/tree/main/examples
-//! [`RoutingDsl::or`]: crate::routing::RoutingDsl::or
+//! [`Router::or`]: crate::routing::Router::or
 //! [`axum::Server`]: hyper::server::Server
 //! [`OriginalUri`]: crate::extract::OriginalUri
 
@@ -863,13 +848,14 @@ pub use self::{error::Error, json::Json};
 /// # Panics
 ///
 /// Panics if `description` doesn't start with `/`.
-pub fn route<S, B>(description: &str, service: S) -> Route<S, EmptyRouter<S::Error>>
+pub fn route<S, B>(
+    description: &str,
+    service: S,
+) -> routing::Router<Route<S, EmptyRouter<S::Error>>>
 where
     S: Service<Request<B>> + Clone,
 {
-    use routing::RoutingDsl;
-
-    routing::EmptyRouter::not_found().route(description, service)
+    routing::Router::new().route(description, service)
 }
 
 mod sealed {

src/response/headers.rs

@@ -14,7 +14,6 @@ use tower::{util::Either, BoxError};
 /// ```rust
 /// use axum::{
 ///     route,
-///     routing::RoutingDsl,
 ///     response::{IntoResponse, Headers},
 ///     handler::get,
 /// };

src/response/mod.rs

@@ -45,7 +45,6 @@ pub use self::{
 ///     handler::get,
 ///     response::IntoResponse,
 ///     route,
-///     routing::RoutingDsl
 /// };
 /// use http_body::Body;
 /// use http::{Response, HeaderMap};

src/response/redirect.rs

@@ -13,7 +13,6 @@ use std::convert::TryFrom;
 ///     handler::get,
 ///     response::Redirect,
 ///     route,
-///     routing::RoutingDsl
 /// };
 ///
 /// let app = route("/old", get(|| async { Redirect::permanent("/new".parse().unwrap()) }))

src/response/sse.rs

@@ -6,7 +6,6 @@
 //! use axum::{
 //!     handler::get,
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use axum::response::sse::{sse, Event, KeepAlive, Sse};
 //! use std::{time::Duration, convert::Infallible};

src/routing/mod.rs

@@ -8,10 +8,9 @@ use crate::{
         connect_info::{Connected, IntoMakeServiceWithConnectInfo},
         OriginalUri,
     },
-    service::{HandleError, HandleErrorFromRouter},
+    service::HandleError,
     util::ByteStr,
 };
-use async_trait::async_trait;
 use bytes::Bytes;
 use http::{Request, Response, StatusCode, Uri};
 use regex::Regex;
@@ -31,24 +30,55 @@ use tower_http::map_response_body::MapResponseBodyLayer;
 
 pub mod future;
 pub mod or;
+
 pub use self::method_filter::MethodFilter;
 
 mod method_filter;
 
-/// A route that sends requests to one of two [`Service`]s depending on the
-/// path.
-///
-/// Created with [`route`](crate::route). See that function for more details.
+/// The router type for composing handlers and services.
 #[derive(Debug, Clone)]
-pub struct Route<S, F> {
-    pub(crate) pattern: PathPattern,
-    pub(crate) svc: S,
-    pub(crate) fallback: F,
+pub struct Router<S> {
+    svc: S,
 }
 
-/// Trait for building routers.
-#[async_trait]
-pub trait RoutingDsl: crate::sealed::Sealed + Sized {
+impl<E> Router<EmptyRouter<E>> {
+    /// Create a new `Router`.
+    ///
+    /// Unless you add additional routes this will respond to `404 Not Found` to
+    /// all requests.
+    pub fn new() -> Self {
+        Self {
+            svc: EmptyRouter::not_found(),
+        }
+    }
+}
+
+impl<E> Default for Router<EmptyRouter<E>> {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl<S, R> Service<R> for Router<S>
+where
+    S: Service<R>,
+{
+    type Response = S::Response;
+    type Error = S::Error;
+    type Future = S::Future;
+
+    #[inline]
+    fn poll_ready(&mut self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+        self.svc.poll_ready(cx)
+    }
+
+    #[inline]
+    fn call(&mut self, req: R) -> Self::Future {
+        self.svc.call(req)
+    }
+}
+
+impl<S> Router<S> {
     /// Add another route to the router.
     ///
     /// # Example
@@ -57,7 +87,6 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     /// use axum::{
     ///     handler::get,
     ///     route,
-    ///     routing::RoutingDsl
     /// };
     ///
     /// async fn first_handler() { /* ... */ }
@@ -74,29 +103,29 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     /// # axum::Server::bind(&"".parse().unwrap()).serve(app.into_make_service()).await.unwrap();
     /// # };
     /// ```
-    fn route<T, B>(self, description: &str, svc: T) -> Route<T, Self>
+    pub fn route<T, B>(self, description: &str, svc: T) -> Router<Route<T, S>>
     where
         T: Service<Request<B>> + Clone,
     {
-        Route {
+        self.map(|fallback| Route {
             pattern: PathPattern::new(description),
             svc,
-            fallback: self,
-        }
+            fallback,
+        })
     }
 
     /// Nest another service inside this router at the given path.
     ///
     /// See [`nest`] for more details.
-    fn nest<T, B>(self, description: &str, svc: T) -> Nested<T, Self>
+    pub fn nest<T, B>(self, description: &str, svc: T) -> Router<Nested<T, S>>
     where
         T: Service<Request<B>> + Clone,
     {
-        Nested {
+        self.map(|fallback| Nested {
             pattern: PathPattern::new(description),
             svc,
-            fallback: self,
-        }
+            fallback,
+        })
     }
 
     /// Create a boxed route trait object.
@@ -109,7 +138,7 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     ///     body::Body,
     ///     handler::get,
     ///     route,
-    ///     routing::{BoxRoute, RoutingDsl}
+    ///     routing::{Router, BoxRoute}
     /// };
     ///
     /// async fn first_handler() { /* ... */ }
@@ -118,7 +147,7 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     ///
     /// async fn third_handler() { /* ... */ }
     ///
-    /// fn app() -> BoxRoute<Body> {
+    /// fn app() -> Router<BoxRoute> {
     ///     route("/", get(first_handler).post(second_handler))
     ///         .route("/foo", get(third_handler))
     ///         .boxed()
@@ -127,22 +156,24 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     ///
     /// It also helps with compile times when you have a very large number of
     /// routes.
-    fn boxed<ReqBody, ResBody>(self) -> BoxRoute<ReqBody, Self::Error>
+    pub fn boxed<ReqBody, ResBody>(self) -> Router<BoxRoute<ReqBody, S::Error>>
     where
-        Self: Service<Request<ReqBody>, Response = Response<ResBody>> + Send + 'static,
-        <Self as Service<Request<ReqBody>>>::Error: Into<BoxError> + Send + Sync,
-        <Self as Service<Request<ReqBody>>>::Future: Send,
+        S: Service<Request<ReqBody>, Response = Response<ResBody>> + Send + 'static,
+        S::Error: Into<BoxError> + Send + Sync,
+        S::Future: Send,
         ReqBody: http_body::Body<Data = Bytes> + Send + Sync + 'static,
         ReqBody::Error: Into<BoxError> + Send + Sync + 'static,
         ResBody: http_body::Body<Data = Bytes> + Send + Sync + 'static,
         ResBody::Error: Into<BoxError> + Send + Sync + 'static,
     {
-        ServiceBuilder::new()
-            .layer_fn(BoxRoute)
-            .layer_fn(MpscBuffer::new)
-            .layer(BoxService::layer())
-            .layer(MapResponseBodyLayer::new(box_body))
-            .service(self)
+        self.map(|svc| {
+            ServiceBuilder::new()
+                .layer_fn(BoxRoute)
+                .layer_fn(MpscBuffer::new)
+                .layer(BoxService::layer())
+                .layer(MapResponseBodyLayer::new(box_body))
+                .service(svc)
+        })
     }
 
     /// Apply a [`tower::Layer`] to the router.
@@ -165,7 +196,6 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     /// use axum::{
     ///     handler::get,
     ///     route,
-    ///     routing::RoutingDsl
     /// };
     /// use tower::limit::{ConcurrencyLimitLayer, ConcurrencyLimit};
     ///
@@ -195,7 +225,6 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     /// use axum::{
     ///     handler::get,
     ///     route,
-    ///     routing::RoutingDsl
     /// };
     /// use tower_http::trace::TraceLayer;
     ///
@@ -213,11 +242,11 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     /// # axum::Server::bind(&"".parse().unwrap()).serve(app.into_make_service()).await.unwrap();
     /// # };
     /// ```
-    fn layer<L>(self, layer: L) -> Layered<L::Service>
+    pub fn layer<L>(self, layer: L) -> Router<Layered<L::Service>>
     where
-        L: Layer<Self>,
+        L: Layer<S>,
     {
-        Layered::new(layer.layer(self))
+        self.map(|svc| Layered::new(layer.layer(svc)))
     }
 
     /// Convert this router into a [`MakeService`], that is a [`Service`] who's
@@ -230,7 +259,6 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     /// use axum::{
     ///     handler::get,
     ///     route,
-    ///     routing::RoutingDsl
     /// };
     ///
     /// let app = route("/", get(|| async { "Hi!" }));
@@ -244,11 +272,11 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     /// ```
     ///
     /// [`MakeService`]: tower::make::MakeService
-    fn into_make_service(self) -> tower::make::Shared<Self>
+    pub fn into_make_service(self) -> tower::make::Shared<S>
     where
-        Self: Clone,
+        S: Clone,
     {
-        tower::make::Shared::new(self)
+        tower::make::Shared::new(self.svc)
     }
 
     /// Convert this router into a [`MakeService`], that will store `C`'s
@@ -264,7 +292,6 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     ///     extract::ConnectInfo,
     ///     handler::get,
     ///     route,
-    ///     routing::RoutingDsl
     /// };
     /// use std::net::SocketAddr;
     ///
@@ -291,7 +318,6 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     ///     extract::connect_info::{ConnectInfo, Connected},
     ///     handler::get,
     ///     route,
-    ///     routing::RoutingDsl
     /// };
     /// use hyper::server::conn::AddrStream;
     ///
@@ -335,14 +361,14 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     /// [`Connected`]: crate::extract::connect_info::Connected
     /// [`ConnectInfo`]: crate::extract::connect_info::ConnectInfo
     /// [uds]: https://github.com/tokio-rs/axum/blob/main/examples/unix_domain_socket.rs
-    fn into_make_service_with_connect_info<C, Target>(
+    pub fn into_make_service_with_connect_info<C, Target>(
         self,
-    ) -> IntoMakeServiceWithConnectInfo<Self, C>
+    ) -> IntoMakeServiceWithConnectInfo<S, C>
     where
-        Self: Clone,
+        S: Clone,
         C: Connected<Target>,
     {
-        IntoMakeServiceWithConnectInfo::new(self)
+        IntoMakeServiceWithConnectInfo::new(self.svc)
     }
 
     /// Merge two routers into one.
@@ -354,7 +380,6 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     /// use axum::{
     ///     handler::get,
     ///     route,
-    ///     routing::RoutingDsl
     /// };
     /// #
     /// # async fn users_list() {}
@@ -373,14 +398,11 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     /// # hyper::Server::bind(&"".parse().unwrap()).serve(app.into_make_service()).await.unwrap();
     /// # };
     /// ```
-    fn or<S>(self, other: S) -> or::Or<Self, S>
-    where
-        S: RoutingDsl,
-    {
-        or::Or {
-            first: self,
+    pub fn or<S2>(self, other: S2) -> Router<or::Or<S, S2>> {
+        self.map(|first| or::Or {
+            first,
             second: other,
-        }
+        })
     }
 
     /// Handle errors services in this router might produce, by mapping them to
@@ -395,7 +417,6 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     ///     handler::get,
     ///     http::StatusCode,
     ///     route,
-    ///     routing::RoutingDsl
     /// };
     /// use tower::{BoxError, timeout::TimeoutLayer};
     /// use std::{time::Duration, convert::Infallible};
@@ -435,7 +456,6 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     ///     handler::get,
     ///     http::StatusCode,
     ///     route,
-    ///     routing::RoutingDsl
     /// };
     /// use tower::{BoxError, timeout::TimeoutLayer};
     /// use std::time::Duration;
@@ -457,24 +477,35 @@ pub trait RoutingDsl: crate::sealed::Sealed + Sized {
     /// # hyper::Server::bind(&"".parse().unwrap()).serve(app.into_make_service()).await.unwrap();
     /// # };
     /// ```
-    fn handle_error<ReqBody, F>(
-        self,
-        f: F,
-    ) -> HandleError<Self, F, ReqBody, HandleErrorFromRouter> {
-        HandleError::new(self, f)
+    pub fn handle_error<ReqBody, F>(self, f: F) -> Router<HandleError<S, F, ReqBody>> {
+        self.map(|svc| HandleError::new(svc, f))
     }
 
     /// Check that your service cannot fail.
     ///
     /// That is, its error type is [`Infallible`].
-    fn check_infallible(self) -> CheckInfallible<Self> {
-        CheckInfallible(self)
+    pub fn check_infallible(self) -> Router<CheckInfallible<S>> {
+        self.map(CheckInfallible)
+    }
+
+    fn map<F, S2>(self, f: F) -> Router<S2>
+    where
+        F: FnOnce(S) -> S2,
+    {
+        Router { svc: f(self.svc) }
     }
 }
 
-impl<S, F> RoutingDsl for Route<S, F> {}
-
-impl<S, F> crate::sealed::Sealed for Route<S, F> {}
+/// A route that sends requests to one of two [`Service`]s depending on the
+/// path.
+///
+/// Created with [`route`](crate::route). See that function for more details.
+#[derive(Debug, Clone)]
+pub struct Route<S, F> {
+    pub(crate) pattern: PathPattern,
+    pub(crate) svc: S,
+    pub(crate) fallback: F,
+}
 
 impl<S, F, B> Service<Request<B>> for Route<S, F>
 where
@@ -560,10 +591,6 @@ impl<E> fmt::Debug for EmptyRouter<E> {
     }
 }
 
-impl<E> RoutingDsl for EmptyRouter<E> {}
-
-impl<E> crate::sealed::Sealed for EmptyRouter<E> {}
-
 impl<B, E> Service<Request<B>> for EmptyRouter<E>
 where
     B: Send + Sync + 'static,
@@ -728,8 +755,8 @@ type Captures = Vec<(String, String)>;
 
 /// A boxed route trait object.
 ///
-/// See [`RoutingDsl::boxed`] for more details.
-pub struct BoxRoute<B, E = Infallible>(
+/// See [`Router::boxed`] for more details.
+pub struct BoxRoute<B = crate::body::Body, E = Infallible>(
     MpscBuffer<BoxService<Request<B>, Response<BoxBody>, E>, Request<B>>,
 );
 
@@ -745,10 +772,6 @@ impl<B, E> fmt::Debug for BoxRoute<B, E> {
     }
 }
 
-impl<B, E> RoutingDsl for BoxRoute<B, E> {}
-
-impl<B, E> crate::sealed::Sealed for BoxRoute<B, E> {}
-
 impl<B, E> Service<Request<B>> for BoxRoute<B, E>
 where
     E: Into<BoxError>,
@@ -772,7 +795,7 @@ where
 
 /// A [`Service`] created from a router by applying a Tower middleware.
 ///
-/// Created with [`RoutingDsl::layer`]. See that method for more details.
+/// Created with [`Router::layer`]. See that method for more details.
 pub struct Layered<S> {
     inner: S,
 }
@@ -803,10 +826,6 @@ where
     }
 }
 
-impl<S> RoutingDsl for Layered<S> {}
-
-impl<S> crate::sealed::Sealed for Layered<S> {}
-
 impl<S, R> Service<R> for Layered<S>
 where
     S: Service<R>,
@@ -835,7 +854,7 @@ where
 /// use axum::{
 ///     handler::get,
 ///     route,
-///     routing::{nest, RoutingDsl},
+///     routing::nest,
 /// };
 /// use http::Uri;
 ///
@@ -864,7 +883,7 @@ where
 ///     extract::Path,
 ///     handler::get,
 ///     route,
-///     routing::{nest, RoutingDsl},
+///     routing::nest,
 /// };
 /// use std::collections::HashMap;
 ///
@@ -888,7 +907,7 @@ where
 ///
 /// ```
 /// use axum::{
-///     routing::{nest, RoutingDsl},
+///     routing::nest,
 ///     service::get,
 /// };
 /// use tower_http::services::ServeDir;
@@ -902,23 +921,19 @@ where
 /// # };
 /// ```
 ///
-/// If necessary you can use [`RoutingDsl::boxed`] to box a group of routes
+/// If necessary you can use [`Router::boxed`] to box a group of routes
 /// making the type easier to name. This is sometimes useful when working with
 /// `nest`.
-pub fn nest<S, B>(description: &str, svc: S) -> Nested<S, EmptyRouter<S::Error>>
+pub fn nest<S, B>(description: &str, svc: S) -> Router<Nested<S, EmptyRouter<S::Error>>>
 where
     S: Service<Request<B>> + Clone,
 {
-    Nested {
-        pattern: PathPattern::new(description),
-        svc,
-        fallback: EmptyRouter::not_found(),
-    }
+    Router::new().nest(description, svc)
 }
 
 /// A [`Service`] that has been nested inside a router at some path.
 ///
-/// Created with [`nest`] or [`RoutingDsl::nest`].
+/// Created with [`nest`] or [`Router::nest`].
 #[derive(Debug, Clone)]
 pub struct Nested<S, F> {
     pattern: PathPattern,
@@ -926,10 +941,6 @@ pub struct Nested<S, F> {
     fallback: F,
 }
 
-impl<S, F> RoutingDsl for Nested<S, F> {}
-
-impl<S, F> crate::sealed::Sealed for Nested<S, F> {}
-
 impl<S, F, B> Service<Request<B>> for Nested<S, F>
 where
     S: Service<Request<B>, Response = Response<BoxBody>> + Clone,
@@ -1002,7 +1013,7 @@ fn strip_prefix(uri: &Uri, prefix: &str) -> Uri {
 
 /// Middleware that statically verifies that a service cannot fail.
 ///
-/// Created with [`check_infallible`](RoutingDsl::check_infallible).
+/// Created with [`check_infallible`](Router::check_infallible).
 #[derive(Debug, Clone, Copy)]
 pub struct CheckInfallible<S>(S);
 
@@ -1025,10 +1036,6 @@ where
     }
 }
 
-impl<S> RoutingDsl for CheckInfallible<S> {}
-
-impl<S> crate::sealed::Sealed for CheckInfallible<S> {}
-
 #[cfg(test)]
 mod tests {
     use super::*;

src/routing/or.rs

@@ -1,6 +1,6 @@
 //! [`Or`] used to combine two services into one.
 
-use super::{FromEmptyRouter, OrDepth, RoutingDsl};
+use super::{FromEmptyRouter, OrDepth};
 use crate::body::BoxBody;
 use futures_util::ready;
 use http::{Request, Response};
@@ -14,19 +14,15 @@ use tower::{util::Oneshot, Service, ServiceExt};
 
 /// [`tower::Service`] that is the combination of two routers.
 ///
-/// See [`RoutingDsl::or`] for more details.
+/// See [`Router::or`] for more details.
 ///
-/// [`RoutingDsl::or`]: super::RoutingDsl::or
+/// [`Router::or`]: super::Router::or
 #[derive(Debug, Clone, Copy)]
 pub struct Or<A, B> {
     pub(super) first: A,
     pub(super) second: B,
 }
 
-impl<A, B> RoutingDsl for Or<A, B> {}
-
-impl<A, B> crate::sealed::Sealed for Or<A, B> {}
-
 #[allow(warnings)]
 impl<A, B, ReqBody> Service<Request<ReqBody>> for Or<A, B>
 where

src/service/mod.rs

@@ -16,7 +16,6 @@
 //!     handler::get,
 //!     http::Request,
 //!     route,
-//!     routing::RoutingDsl,
 //!     service,
 //! };
 //!
@@ -68,7 +67,6 @@
 //! use axum::{
 //!     handler::get,
 //!     route,
-//!     routing::RoutingDsl
 //! };
 //! use tower::ServiceBuilder;
 //! # let some_backpressure_sensitive_middleware =
@@ -151,7 +149,6 @@ where
 /// use axum::{
 ///     http::Request,
 ///     route,
-///     routing::RoutingDsl,
 ///     service,
 /// };
 /// use http::Response;
@@ -249,7 +246,7 @@ where
 ///     handler::on,
 ///     service,
 ///     route,
-///     routing::{MethodFilter, RoutingDsl},
+///     routing::MethodFilter,
 /// };
 /// use http::Response;
 /// use std::convert::Infallible;
@@ -344,7 +341,7 @@ impl<S, F, B> OnMethod<S, F, B> {
     ///     handler::on,
     ///     service,
     ///     route,
-    ///     routing::{MethodFilter, RoutingDsl},
+    ///     routing::MethodFilter,
     /// };
     /// use http::Response;
     /// use std::convert::Infallible;
@@ -447,7 +444,7 @@ impl<S, F, B> OnMethod<S, F, B> {
     ///     handler::on,
     ///     service,
     ///     route,
-    ///     routing::{MethodFilter, RoutingDsl},
+    ///     routing::MethodFilter,
     /// };
     /// use http::Response;
     /// use std::convert::Infallible;
@@ -483,14 +480,11 @@ impl<S, F, B> OnMethod<S, F, B> {
     ///
     /// Unhandled errors will close the connection without sending a response.
     ///
-    /// Works similarly to [`RoutingDsl::handle_error`]. See that for more
+    /// Works similarly to [`Router::handle_error`]. See that for more
     /// details.
     ///
-    /// [`RoutingDsl::handle_error`]: crate::routing::RoutingDsl::handle_error
-    pub fn handle_error<ReqBody, H>(
-        self,
-        f: H,
-    ) -> HandleError<Self, H, ReqBody, HandleErrorFromService> {
+    /// [`Router::handle_error`]: crate::routing::Router::handle_error
+    pub fn handle_error<ReqBody, H>(self, f: H) -> HandleError<Self, H, ReqBody> {
         HandleError::new(self, f)
     }
 }
@@ -536,15 +530,15 @@ where
 ///
 /// Created with
 /// [`handler::Layered::handle_error`](crate::handler::Layered::handle_error) or
-/// [`routing::RoutingDsl::handle_error`](crate::routing::RoutingDsl::handle_error).
+/// [`routing::Router::handle_error`](crate::routing::Router::handle_error).
 /// See those methods for more details.
-pub struct HandleError<S, F, B, T> {
+pub struct HandleError<S, F, B> {
     inner: S,
     f: F,
-    _marker: PhantomData<fn() -> (B, T)>,
+    _marker: PhantomData<fn() -> B>,
 }
 
-impl<S, F, B, T> Clone for HandleError<S, F, B, T>
+impl<S, F, B> Clone for HandleError<S, F, B>
 where
     S: Clone,
     F: Clone,
@@ -554,23 +548,7 @@ where
     }
 }
 
-/// Marker type used for [`HandleError`] to indicate that it should implement
-/// [`RoutingDsl`](crate::routing::RoutingDsl).
-#[non_exhaustive]
-#[derive(Debug)]
-pub struct HandleErrorFromRouter;
-
-/// Marker type used for [`HandleError`] to indicate that it should _not_ implement
-/// [`RoutingDsl`](crate::routing::RoutingDsl).
-#[non_exhaustive]
-#[derive(Debug)]
-pub struct HandleErrorFromService;
-
-impl<S, F, B> crate::routing::RoutingDsl for HandleError<S, F, B, HandleErrorFromRouter> {}
-
-impl<S, F, B> crate::sealed::Sealed for HandleError<S, F, B, HandleErrorFromRouter> {}
-
-impl<S, F, B, T> HandleError<S, F, B, T> {
+impl<S, F, B> HandleError<S, F, B> {
     pub(crate) fn new(inner: S, f: F) -> Self {
         Self {
             inner,
@@ -580,7 +558,7 @@ impl<S, F, B, T> HandleError<S, F, B, T> {
     }
 }
 
-impl<S, F, B, T> fmt::Debug for HandleError<S, F, B, T>
+impl<S, F, B> fmt::Debug for HandleError<S, F, B>
 where
     S: fmt::Debug,
 {
@@ -592,7 +570,7 @@ where
     }
 }
 
-impl<S, F, ReqBody, ResBody, Res, E, T> Service<Request<ReqBody>> for HandleError<S, F, ReqBody, T>
+impl<S, F, ReqBody, ResBody, Res, E> Service<Request<ReqBody>> for HandleError<S, F, ReqBody>
 where
     S: Service<Request<ReqBody>, Response = Response<ResBody>> + Clone,
     F: FnOnce(S::Error) -> Result<Res, E> + Clone,
@@ -615,21 +593,3 @@ where
         }
     }
 }
-
-/// ```compile_fail
-/// use crate::{service::ServiceExt};
-/// use tower::service_fn;
-/// use hyper::Body;
-/// use http::{Request, Response, StatusCode};
-///
-/// let svc = service_fn(|_: Request<Body>| async {
-///     Ok::<_, hyper::Error>(Response::new(Body::empty()))
-/// })
-/// .handle_error::<_, _, hyper::Error>(|_| Ok(StatusCode::INTERNAL_SERVER_ERROR));
-///
-/// // `.route` should not compile, ie `HandleError` created from any
-/// // random service should not implement `RoutingDsl`
-/// svc.route::<_, Body>("/", get(|| async {}));
-/// ```
-#[allow(dead_code)]
-fn compile_fail_tests() {}

src/tests/mod.rs

@@ -6,7 +6,7 @@ use crate::{
     response::IntoResponse,
     route,
     routing::nest,
-    routing::{MethodFilter, RoutingDsl},
+    routing::MethodFilter,
     service,
 };
 use bytes::Bytes;