refactor: Use axum for "mdbook serve"

Cargo.lock

@@ -123,12 +123,76 @@ dependencies = [
  "wait-timeout",
 ]
 
+[[package]]
+name = "async-trait"
+version = "0.1.79"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a507401cad91ec6a857ed5513a2073c82a9b9048762b885bb98655b306964681"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.48",
+]
+
 [[package]]
 name = "autocfg"
 version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
+[[package]]
+name = "axum"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a6c9af12842a67734c9a2e355436e5d03b22383ed60cf13cd0c18fbfe3dcbcf"
+dependencies = [
+ "async-trait",
+ "axum-core",
+ "base64",
+ "bytes",
+ "futures-util",
+ "http",
+ "http-body",
+ "http-body-util",
+ "hyper",
+ "hyper-util",
+ "itoa",
+ "matchit",
+ "memchr",
+ "mime",
+ "percent-encoding",
+ "pin-project-lite",
+ "rustversion",
+ "serde",
+ "sha1",
+ "sync_wrapper 1.0.0",
+ "tokio",
+ "tokio-tungstenite",
+ "tower",
+ "tower-layer",
+ "tower-service",
+]
+
+[[package]]
+name = "axum-core"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a15c63fd72d41492dc4f497196f5da1fb04fb7529e631d73630d1b491e47a2e3"
+dependencies = [
+ "async-trait",
+ "bytes",
+ "futures-util",
+ "http",
+ "http-body",
+ "http-body-util",
+ "mime",
+ "pin-project-lite",
+ "rustversion",
+ "sync_wrapper 0.1.2",
+ "tower-layer",
+ "tower-service",
+]
+
 [[package]]
 name = "backtrace"
 version = "0.3.69"
@@ -413,12 +477,6 @@ dependencies = [
  "log",
 ]
 
-[[package]]
-name = "equivalent"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
-
 [[package]]
 name = "errno"
 version = "0.3.8"
@@ -497,7 +555,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "eac8f7d7865dcb88bd4373ab671c8cf4508703796caa2b1985a9ca867b3fcb78"
 dependencies = [
  "futures-core",
- "futures-sink",
 ]
 
 [[package]]
@@ -584,25 +641,6 @@ dependencies = [
  "regex-syntax",
 ]
 
-[[package]]
-name = "h2"
-version = "0.3.26"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "81fe527a889e1532da5c525686d96d4c2e74cdd345badf8dfef9f6b39dd5f5e8"
-dependencies = [
- "bytes",
- "fnv",
- "futures-core",
- "futures-sink",
- "futures-util",
- "http",
- "indexmap",
- "slab",
- "tokio",
- "tokio-util",
- "tracing",
-]
-
 [[package]]
 name = "handlebars"
 version = "5.1.0"
@@ -617,36 +655,6 @@ dependencies = [
  "thiserror",
 ]
 
-[[package]]
-name = "hashbrown"
-version = "0.14.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "290f1a1d9242c78d09ce40a5e87e7554ee637af1351968159f4952f028f75604"
-
-[[package]]
-name = "headers"
-version = "0.3.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "06683b93020a07e3dbcf5f8c0f6d40080d725bea7936fc01ad345c01b97dc270"
-dependencies = [
- "base64",
- "bytes",
- "headers-core",
- "http",
- "httpdate",
- "mime",
- "sha1",
-]
-
-[[package]]
-name = "headers-core"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e7f66481bfee273957b1f20485a4ff3362987f85b2c236580d81b4eb7a326429"
-dependencies = [
- "http",
-]
-
 [[package]]
 name = "hermit-abi"
 version = "0.3.5"
@@ -669,9 +677,9 @@ dependencies = [
 
 [[package]]
 name = "http"
-version = "0.2.11"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8947b1a6fad4393052c7ba1f4cd97bed3e953a95c79c92ad9b051a04611d9fbb"
+checksum = "21b9ddb458710bc376481b842f5da65cdf31522de232c1ca8146abce2a358258"
 dependencies = [
  "bytes",
  "fnv",
@@ -680,15 +688,33 @@ dependencies = [
 
 [[package]]
 name = "http-body"
-version = "0.4.6"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7ceab25649e9960c0311ea418d17bee82c0dcec1bd053b5f9a66e265a693bed2"
+checksum = "1cac85db508abc24a2e48553ba12a996e87244a0395ce011e62b37158745d643"
 dependencies = [
  "bytes",
  "http",
+]
+
+[[package]]
+name = "http-body-util"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0475f8b2ac86659c21b64320d5d653f9efe42acd2a4e560073ec61a155a34f1d"
+dependencies = [
+ "bytes",
+ "futures-core",
+ "http",
+ "http-body",
  "pin-project-lite",
 ]
 
+[[package]]
+name = "http-range-header"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ce4ef31cda248bbdb6e6820603b82dfcd9e833db65a43e997a0ccec777d11fe"
+
 [[package]]
 name = "httparse"
 version = "1.8.0"
@@ -709,26 +735,37 @@ checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
 
 [[package]]
 name = "hyper"
-version = "0.14.28"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bf96e135eb83a2a8ddf766e426a841d8ddd7449d5f00d34ea02b41d2f19eef80"
+checksum = "186548d73ac615b32a73aafe38fb4f56c0d340e110e5a200bcadbaf2e199263a"
 dependencies = [
  "bytes",
  "futures-channel",
- "futures-core",
  "futures-util",
- "h2",
  "http",
  "http-body",
  "httparse",
  "httpdate",
  "itoa",
  "pin-project-lite",
+ "smallvec",
+ "tokio",
+]
+
+[[package]]
+name = "hyper-util"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca38ef113da30126bbff9cd1705f9273e15d45498615d138b0c20279ac7a76aa"
+dependencies = [
+ "bytes",
+ "futures-util",
+ "http",
+ "http-body",
+ "hyper",
+ "pin-project-lite",
  "socket2",
  "tokio",
- "tower-service",
- "tracing",
- "want",
 ]
 
 [[package]]
@@ -780,16 +817,6 @@ dependencies = [
  "winapi-util",
 ]
 
-[[package]]
-name = "indexmap"
-version = "2.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "824b2ae422412366ba479e8111fd301f7b5faece8149317bb81925979a53f520"
-dependencies = [
- "equivalent",
- "hashbrown",
-]
-
 [[package]]
 name = "inotify"
 version = "0.9.6"
@@ -911,6 +938,12 @@ dependencies = [
  "xml5ever",
 ]
 
+[[package]]
+name = "matchit"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e7465ac9959cc2b1404e8e2367b43684a6d13790fe23056cc8c6c5a6b7bcb94"
+
 [[package]]
 name = "mdbook"
 version = "0.4.37"
@@ -918,6 +951,7 @@ dependencies = [
  "ammonia",
  "anyhow",
  "assert_cmd",
+ "axum",
  "chrono",
  "clap",
  "clap_complete",
@@ -946,8 +980,8 @@ dependencies = [
  "tokio",
  "toml",
  "topological-sort",
+ "tower-http",
  "walkdir",
- "warp",
 ]
 
 [[package]]
@@ -1415,13 +1449,10 @@ dependencies = [
 ]
 
 [[package]]
-name = "rustls-pemfile"
+name = "rustversion"
-version = "1.0.4"
+version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1c74cae0a4cf6ccbbf5f359f08efdf8ee7e1dc532573bf0db71968cb56b1448c"
+checksum = "80af6f9131f277a45a3fba6ce8e2258037bb0477a67e610d3c1fe046ab31de47"
-dependencies = [
- "base64",
-]
 
 [[package]]
 name = "ryu"
@@ -1438,12 +1469,6 @@ dependencies = [
  "winapi-util",
 ]
 
-[[package]]
-name = "scoped-tls"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e1cf6437eb19a8f4a6cc0f7dca544973b0b78843adbfeb3683d1a94a0024a294"
-
 [[package]]
 name = "scopeguard"
 version = "1.2.0"
@@ -1498,18 +1523,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "serde_urlencoded"
-version = "0.7.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d3491c14715ca2294c4d6a88f15e84739788c1d030eed8c110436aafdaa2f3fd"
-dependencies = [
- "form_urlencoded",
- "itoa",
- "ryu",
- "serde",
-]
-
 [[package]]
 name = "sha1"
 version = "0.10.6"
@@ -1623,6 +1636,18 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "sync_wrapper"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2047c6ded9c721764247e62cd3b03c09ffc529b2ba5b10ec482ae507a4a70160"
+
+[[package]]
+name = "sync_wrapper"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "384595c11a4e2969895cad5a8c4029115f5ab956a9e5ef4de79d11a426e5f20c"
+
 [[package]]
 name = "tempfile"
 version = "3.10.0"
@@ -1725,22 +1750,11 @@ dependencies = [
  "syn 2.0.48",
 ]
 
-[[package]]
-name = "tokio-stream"
-version = "0.1.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "397c988d37662c7dda6d2208364a706264bf3d6138b11d436cbac0ad38832842"
-dependencies = [
- "futures-core",
- "pin-project-lite",
- "tokio",
-]
-
 [[package]]
 name = "tokio-tungstenite"
-version = "0.20.1"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "212d5dcb2a1ce06d81107c3d0ffa3121fe974b73f068c8282cb1c32328113b6c"
+checksum = "c83b561d025642014097b66e6c1bb422783339e0909e4429cde4749d1990bc38"
 dependencies = [
  "futures-util",
  "log",
@@ -1759,7 +1773,6 @@ dependencies = [
  "futures-sink",
  "pin-project-lite",
  "tokio",
- "tracing",
 ]
 
 [[package]]
@@ -1777,6 +1790,52 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ea68304e134ecd095ac6c3574494fc62b909f416c4fca77e440530221e549d3d"
 
+[[package]]
+name = "tower"
+version = "0.4.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8fa9be0de6cf49e536ce1851f987bd21a43b771b09473c3549a6c853db37c1c"
+dependencies = [
+ "futures-core",
+ "futures-util",
+ "pin-project",
+ "pin-project-lite",
+ "tokio",
+ "tower-layer",
+ "tower-service",
+]
+
+[[package]]
+name = "tower-http"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e9cd434a998747dd2c4276bc96ee2e0c7a2eadf3cae88e52be55a05fa9053f5"
+dependencies = [
+ "bitflags 2.4.2",
+ "bytes",
+ "futures-util",
+ "http",
+ "http-body",
+ "http-body-util",
+ "http-range-header",
+ "httpdate",
+ "mime",
+ "mime_guess",
+ "percent-encoding",
+ "pin-project-lite",
+ "tokio",
+ "tokio-util",
+ "tower-layer",
+ "tower-service",
+ "tracing",
+]
+
+[[package]]
+name = "tower-layer"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c20c8dbed6283a09604c3e69b4b7eeb54e298b8a600d4d5ecb5ad39de609f1d0"
+
 [[package]]
 name = "tower-service"
 version = "0.3.2"
@@ -1789,7 +1848,6 @@ version = "0.1.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c3523ab5a71916ccf420eebdf5521fcef02141234bbc0b8a49f2fdc4544364ef"
 dependencies = [
- "log",
  "pin-project-lite",
  "tracing-core",
 ]
@@ -1799,21 +1857,12 @@ name = "tracing-core"
 version = "0.1.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c06d3da6113f116aaee68e4d601191614c9053067f9ab7f6edbcb161237daa54"
-dependencies = [
- "once_cell",
-]
-
-[[package]]
-name = "try-lock"
-version = "0.2.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
 [[package]]
 name = "tungstenite"
-version = "0.20.1"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9e3dac10fd62eaf6617d3a904ae222845979aec67c615d1c842b4002c7666fb9"
+checksum = "9ef1a641ea34f399a848dea702823bbecfb4c486f911735368f1f137cb8257e1"
 dependencies = [
  "byteorder",
  "bytes",
@@ -1918,45 +1967,6 @@ dependencies = [
  "winapi-util",
 ]
 
-[[package]]
-name = "want"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bfa7760aed19e106de2c7c0b581b509f2f25d3dacaf737cb82ac61bc6d760b0e"
-dependencies = [
- "try-lock",
-]
-
-[[package]]
-name = "warp"
-version = "0.3.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c1e92e22e03ff1230c03a1a8ee37d2f89cd489e2e541b7550d6afad96faed169"
-dependencies = [
- "bytes",
- "futures-channel",
- "futures-util",
- "headers",
- "http",
- "hyper",
- "log",
- "mime",
- "mime_guess",
- "percent-encoding",
- "pin-project",
- "rustls-pemfile",
- "scoped-tls",
- "serde",
- "serde_json",
- "serde_urlencoded",
- "tokio",
- "tokio-stream",
- "tokio-tungstenite",
- "tokio-util",
- "tower-service",
- "tracing",
-]
-
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"

Cargo.toml

@@ -45,7 +45,8 @@ pathdiff = { version = "0.2.1", optional = true }
 # Serve feature
 futures-util = { version = "0.3.28", optional = true }
 tokio = { version = "1.28.1", features = ["macros", "rt-multi-thread"], optional = true }
-warp = { version = "0.3.6", default-features = false, features = ["websocket"], optional = true }
+axum = { version = "0.7.5", default-features = false, features = ["http1", "tokio", "ws"], optional = true }
+tower-http = { version = "0.5.2", default-features = false, features = ["fs"], optional = true }
 
 # Search feature
 elasticlunr-rs = { version = "3.0.2", optional = true }
@@ -62,7 +63,7 @@ walkdir = "2.3.3"
 [features]
 default = ["watch", "serve", "search"]
 watch = ["dep:notify", "dep:notify-debouncer-mini", "dep:ignore", "dep:pathdiff"]
-serve = ["dep:futures-util", "dep:tokio", "dep:warp"]
+serve = ["dep:futures-util", "dep:tokio", "dep:axum", "dep:tower-http"]
 search = ["dep:elasticlunr-rs", "dep:ammonia"]
 
 [[bin]]

src/cmd/serve.rs

@@ -2,6 +2,9 @@ use super::command_prelude::*;
 #[cfg(feature = "watch")]
 use super::watch;
 use crate::{get_book_dir, open};
+use axum::extract::ws::Message;
+use axum::extract::{State, WebSocketUpgrade};
+use axum::{response::IntoResponse, routing::get};
 use clap::builder::NonEmptyStringValueParser;
 use futures_util::sink::SinkExt;
 use futures_util::StreamExt;
@@ -12,8 +15,7 @@ use mdbook::MDBook;
 use std::net::{SocketAddr, ToSocketAddrs};
 use std::path::PathBuf;
 use tokio::sync::broadcast;
-use warp::ws::Message;
+use tower_http::services::{ServeDir, ServeFile};
-use warp::Filter;
 
 /// The HTTP endpoint for the websocket used to trigger reloads when a file changes.
 const LIVE_RELOAD_ENDPOINT: &str = "__livereload";
@@ -111,7 +113,7 @@ pub fn execute(args: &ArgMatches) -> Result<()> {
             error!("Unable to load the book");
             utils::log_backtrace(&e);
         } else {
-            let _ = tx.send(Message::text("reload"));
+            let _ = tx.send("reload".into());
         }
     });
 
@@ -127,17 +129,35 @@ async fn serve(
     reload_tx: broadcast::Sender<Message>,
     file_404: &str,
 ) {
-    // A warp Filter which captures `reload_tx` and provides an `rx` copy to
+    let app = axum::Router::new()
-    // receive reload messages.
+        // This upgrades to a websocket, and then waits for any filesystem change notifications,
-    let sender = warp::any().map(move || reload_tx.subscribe());
+        // and relays them over the websocket:
+        .route(&format!("/{LIVE_RELOAD_ENDPOINT}"), get(reload_ws_handler))
+        // Serve from the filesystem:
+        .nest_service(
+            "/",
+            ServeDir::new(build_dir.clone())
+                // The fallback route for 404 errors:
+                .fallback(ServeFile::new(build_dir.join(file_404))),
+        )
+        .with_state(reload_tx);
+
+    std::panic::set_hook(Box::new(move |panic_info| {
+        // exit if serve panics
+        error!("Unable to serve: {}", panic_info);
+        std::process::exit(1);
+    }));
+
+    let listener = tokio::net::TcpListener::bind(address).await.unwrap();
+    axum::serve(listener, app).await.unwrap();
+}
+
+async fn reload_ws_handler(
+    ws: WebSocketUpgrade,
+    State(reload_tx): State<broadcast::Sender<Message>>,
+) -> impl IntoResponse {
+    let mut rx = reload_tx.subscribe();
 
-    // A warp Filter to handle the livereload endpoint. This upgrades to a
-    // websocket, and then waits for any filesystem change notifications, and
-    // relays them over the websocket.
-    let livereload = warp::path(LIVE_RELOAD_ENDPOINT)
-        .and(warp::ws())
-        .and(sender)
-        .map(|ws: warp::ws::Ws, mut rx: broadcast::Receiver<Message>| {
     ws.on_upgrade(move |ws| async move {
         let (mut user_ws_tx, _user_ws_rx) = ws.split();
         trace!("websocket got connection");
@@ -146,19 +166,4 @@ async fn serve(
             let _ = user_ws_tx.send(m).await;
         }
     })
-        });
-    // A warp Filter that serves from the filesystem.
-    let book_route = warp::fs::dir(build_dir.clone());
-    // The fallback route for 404 errors
-    let fallback_route = warp::fs::file(build_dir.join(file_404))
-        .map(|reply| warp::reply::with_status(reply, warp::http::StatusCode::NOT_FOUND));
-    let routes = livereload.or(book_route).or(fallback_route);
-
-    std::panic::set_hook(Box::new(move |panic_info| {
-        // exit if serve panics
-        error!("Unable to serve: {}", panic_info);
-        std::process::exit(1);
-    }));
-
-    warp::serve(routes).run(address).await;
 }