feat: add support for static routing and incremental static regeneration (#2875)

examples/static_routing/.gitignore

@@ -0,0 +1,13 @@
+# Generated by Cargo
+# will have compiled files and executables
+/target/
+pkg
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+# node e2e test tools and outputs
+node_modules/
+test-results/
+end2end/playwright-report/
+playwright/.cache/

examples/static_routing/Cargo.toml

@@ -0,0 +1,115 @@
+[package]
+name = "static_routing"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[dependencies]
+console_error_panic_hook = "0.1.7"
+console_log = "1.0"
+leptos = { path = "../../leptos", features = [
+  "hydration",
+] } #"nightly", "hydration"] }
+leptos_meta = { path = "../../meta" }
+leptos_axum = { path = "../../integrations/axum", optional = true }
+leptos_router = { path = "../../router" }
+log = "0.4.22"
+serde = { version = "1.0", features = ["derive"] }
+thiserror = "1.0"
+axum = { version = "0.7.5", optional = true }
+tower = { version = "0.4.13", optional = true }
+tower-http = { version = "0.5.2", features = ["fs"], optional = true }
+tokio = { version = "1.39", features = [
+  "fs",
+  "rt-multi-thread",
+  "macros",
+], optional = true }
+tokio-stream = { version = "0.1", features = ["fs"], optional = true }
+futures = "0.3"
+wasm-bindgen = "0.2.93"
+notify = { version = "6", optional = true }
+http = { version = "1", optional = true }
+
+[features]
+hydrate = ["leptos/hydrate"]
+ssr = [
+  "dep:axum",
+  "dep:tower",
+  "dep:tower-http",
+  "dep:tokio",
+  "dep:tokio-stream",
+  "leptos/ssr",
+  "leptos_meta/ssr",
+  "dep:leptos_axum",
+  "leptos_router/ssr",
+  "dep:notify",
+  "dep:http"
+]
+
+[profile.release]
+panic = "abort"
+
+[profile.wasm-release]
+inherits = "release"
+opt-level = 'z'
+lto = true
+codegen-units = 1
+panic = "abort"
+
+[package.metadata.cargo-all-features]
+denylist = ["axum", "tower", "tower-http", "tokio", "sqlx", "leptos_axum"]
+skip_feature_sets = [["ssr", "hydrate"]]
+
+[package.metadata.leptos]
+# The name used by wasm-bindgen/cargo-leptos for the JS/WASM bundle. Defaults to the crate name
+output-name = "ssr_modes"
+# The site root folder is where cargo-leptos generate all output. WARNING: all content of this folder will be erased on a rebuild. Use it in your server setup.
+site-root = "target/site"
+# The site-root relative folder where all compiled output (JS, WASM and CSS) is written
+# Defaults to pkg
+site-pkg-dir = "pkg"
+# [Optional] The source CSS file. If it ends with .sass or .scss then it will be compiled by dart-sass into CSS. The CSS is optimized by Lightning CSS before being written to <site-root>/<site-pkg>/app.css
+style-file = "style/main.scss"
+# Assets source dir. All files found here will be copied and synchronized to site-root.
+# The assets-dir cannot have a sub directory with the same name/path as site-pkg-dir.
+#
+# Optional. Env: LEPTOS_ASSETS_DIR.
+assets-dir = "assets"
+# The IP and port (ex: 127.0.0.1:3000) where the server serves the content. Use it in your server setup.
+site-addr = "127.0.0.1:3007"
+# The port to use for automatic reload monitoring
+reload-port = 3001
+# [Optional] Command to use when running end2end tests. It will run in the end2end dir.
+#   [Windows] for non-WSL use "npx.cmd playwright test"
+#   This binary name can be checked in Powershell with Get-Command npx
+end2end-cmd = "npx playwright test"
+end2end-dir = "end2end"
+#  The browserlist query used for optimizing the CSS.
+browserquery = "defaults"
+# Set by cargo-leptos watch when building with that tool. Controls whether autoreload JS will be included in the head
+watch = false
+# The environment Leptos will run in, usually either "DEV" or "PROD"
+env = "DEV"
+# The features to use when compiling the bin target
+#
+# Optional. Can be over-ridden with the command line parameter --bin-features
+bin-features = ["ssr"]
+
+# If the --no-default-features flag should be used when compiling the bin target
+#
+# Optional. Defaults to false.
+bin-default-features = false
+
+# The features to use when compiling the lib target
+#
+# Optional. Can be over-ridden with the command line parameter --lib-features
+lib-features = ["hydrate"]
+
+# If the --no-default-features flag should be used when compiling the lib target
+#
+# Optional. Defaults to false.
+lib-default-features = false
+
+lib-profile-release = "wasm-release"

examples/static_routing/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2022 henrik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

examples/static_routing/Makefile.toml

@@ -0,0 +1,8 @@
+extend = [
+    { path = "../cargo-make/main.toml" },
+    { path = "../cargo-make/cargo-leptos.toml" },
+]
+
+[env]
+
+CLIENT_PROCESS_NAME = "ssr_modes_axum"

examples/static_routing/README.md

@@ -0,0 +1,11 @@
+# Static Routing Example
+
+This example shows the static routing features, which can be used to generate the HTML content for some routes before a request.
+
+## Getting Started
+
+See the [Examples README](../README.md) for setup and run instructions.
+
+## Quick Start
+
+Run `cargo leptos watch` to run this example.

examples/static_routing/posts/post1.md

@@ -0,0 +1,3 @@
+# My first blog post
+
+Having a blog is *fun*.

examples/static_routing/posts/post2.md

@@ -0,0 +1,3 @@
+# My second blog post
+
+Coming up with content is hard.

examples/static_routing/posts/post3.md

@@ -0,0 +1,3 @@
+# My third blog post
+
+Could I just have AI write this for me instead?

examples/static_routing/posts/post4.md

@@ -0,0 +1,3 @@
+# My fourth post
+
+Here is some content. It should regenerate the static page.

examples/static_routing/rust-toolchain.toml

@@ -0,0 +1,2 @@
+[toolchain]
+channel = "stable" # test change

examples/static_routing/src/app.rs

@@ -0,0 +1,323 @@
+use std::path::Path;
+
+use futures::{channel::mpsc, Stream};
+use leptos::prelude::*;
+use leptos_meta::MetaTags;
+use leptos_meta::*;
+use leptos_router::{
+    components::{FlatRoutes, Redirect, Route, Router},
+    hooks::use_params,
+    params::Params,
+    path,
+    static_routes::StaticRoute,
+    SsrMode,
+};
+use serde::{Deserialize, Serialize};
+use thiserror::Error;
+
+pub fn shell(options: LeptosOptions) -> impl IntoView {
+    view! {
+        <!DOCTYPE html>
+        <html lang="en">
+            <head>
+                <meta charset="utf-8"/>
+                <meta name="viewport" content="width=device-width, initial-scale=1"/>
+                <AutoReload options=options.clone()/>
+                <HydrationScripts options/>
+                <MetaTags/>
+            </head>
+            <body>
+                <App/>
+            </body>
+        </html>
+    }
+}
+
+#[component]
+pub fn App() -> impl IntoView {
+    // Provides context that manages stylesheets, titles, meta tags, etc.
+    provide_meta_context();
+    let fallback = || view! { "Page not found." }.into_view();
+
+    view! {
+        <Stylesheet id="leptos" href="/pkg/ssr_modes.css"/>
+        <Title text="Welcome to Leptos"/>
+        <Meta name="color-scheme" content="dark light"/>
+        <Router>
+            <nav>
+                <a href="/">"Home"</a>
+            </nav>
+            <main>
+                <FlatRoutes fallback>
+                    <Route
+                        path=path!("/")
+                        view=HomePage
+                        ssr=SsrMode::Static(
+                            StaticRoute::new().regenerate(|_| watch_path(Path::new("./posts"))),
+                        )
+                    />
+
+                    <Route
+                        path=path!("/about")
+                        view=move || view! { <Redirect path="/"/> }
+                        ssr=SsrMode::Static(StaticRoute::new())
+                    />
+
+                    <Route
+                        path=path!("/post/:slug/")
+                        view=Post
+                        ssr=SsrMode::Static(
+                            StaticRoute::new()
+                                .prerender_params(|| async move {
+                                    [("slug".into(), list_slugs().await.unwrap_or_default())]
+                                        .into_iter()
+                                        .collect()
+                                })
+                                .regenerate(|params| {
+                                    let slug = params.get("slug").unwrap();
+                                    watch_path(Path::new(&format!("./posts/{slug}.md")))
+                                }),
+                        )
+                    />
+
+                </FlatRoutes>
+            </main>
+        </Router>
+    }
+}
+
+#[component]
+fn HomePage() -> impl IntoView {
+    // load the posts
+    let posts = Resource::new(|| (), |_| list_posts());
+    let posts = move || {
+        posts
+            .get()
+            .map(|n| n.unwrap_or_default())
+            .unwrap_or_default()
+    };
+
+    view! {
+        <h1>"My Great Blog"</h1>
+        <Suspense fallback=move || view! { <p>"Loading posts..."</p> }>
+            <ul>
+                <For each=posts key=|post| post.slug.clone() let:post>
+                    <li>
+                        <a href=format!("/post/{}/", post.slug)>{post.title.clone()}</a>
+                    </li>
+                </For>
+            </ul>
+        </Suspense>
+    }
+}
+
+#[derive(Params, Clone, Debug, PartialEq, Eq)]
+pub struct PostParams {
+    slug: Option<String>,
+}
+
+#[component]
+fn Post() -> impl IntoView {
+    let query = use_params::<PostParams>();
+    let slug = move || {
+        query
+            .get()
+            .map(|q| q.slug.unwrap_or_default())
+            .map_err(|_| PostError::InvalidId)
+    };
+    let post_resource = Resource::new_blocking(slug, |slug| async move {
+        match slug {
+            Err(e) => Err(e),
+            Ok(slug) => get_post(slug)
+                .await
+                .map(|data| data.ok_or(PostError::PostNotFound))
+                .map_err(|e| PostError::ServerError(e.to_string())),
+        }
+    });
+
+    let post_view = move || {
+        Suspend::new(async move {
+            match post_resource.await {
+                Ok(Ok(post)) => {
+                    Ok(view! {
+                        <h1>{post.title.clone()}</h1>
+                        <p>{post.content.clone()}</p>
+
+                        // since we're using async rendering for this page,
+                        // this metadata should be included in the actual HTML <head>
+                        // when it's first served
+                        <Title text=post.title/>
+                        <Meta name="description" content=post.content/>
+                    })
+                }
+                Ok(Err(e)) | Err(e) => {
+                    Err(PostError::ServerError(e.to_string()))
+                }
+            }
+        })
+    };
+
+    view! {
+        <em>"The world's best content."</em>
+        <Suspense fallback=move || view! { <p>"Loading post..."</p> }>
+            <ErrorBoundary fallback=|errors| {
+                #[cfg(feature = "ssr")]
+                expect_context::<leptos_axum::ResponseOptions>()
+                    .set_status(http::StatusCode::NOT_FOUND);
+                view! {
+                    <div class="error">
+                        <h1>"Something went wrong."</h1>
+                        <ul>
+                            {move || {
+                                errors
+                                    .get()
+                                    .into_iter()
+                                    .map(|(_, error)| view! { <li>{error.to_string()}</li> })
+                                    .collect::<Vec<_>>()
+                            }}
+
+                        </ul>
+                    </div>
+                }
+            }>{post_view}</ErrorBoundary>
+        </Suspense>
+    }
+}
+
+#[derive(Error, Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub enum PostError {
+    #[error("Invalid post ID.")]
+    InvalidId,
+    #[error("Post not found.")]
+    PostNotFound,
+    #[error("Server error: {0}.")]
+    ServerError(String),
+}
+
+#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
+pub struct Post {
+    slug: String,
+    title: String,
+    content: String,
+}
+
+#[server]
+pub async fn list_slugs() -> Result<Vec<String>, ServerFnError> {
+    use tokio::fs;
+    use tokio_stream::wrappers::ReadDirStream;
+    use tokio_stream::StreamExt;
+
+    let files = ReadDirStream::new(fs::read_dir("./posts").await?);
+    Ok(files
+        .filter_map(|entry| {
+            let entry = entry.ok()?;
+            let path = entry.path();
+            if !path.is_file() {
+                return None;
+            }
+            let extension = path.extension()?;
+            if extension != "md" {
+                return None;
+            }
+
+            let slug = path
+                .file_name()
+                .and_then(|n| n.to_str())
+                .unwrap_or_default()
+                .replace(".md", "");
+            Some(slug)
+        })
+        .collect()
+        .await)
+}
+
+#[server]
+pub async fn list_posts() -> Result<Vec<Post>, ServerFnError> {
+    println!("calling list_posts");
+
+    use futures::TryStreamExt;
+    use tokio::fs;
+    use tokio_stream::wrappers::ReadDirStream;
+
+    let files = ReadDirStream::new(fs::read_dir("./posts").await?);
+    files
+        .try_filter_map(|entry| async move {
+            let path = entry.path();
+            if !path.is_file() {
+                return Ok(None);
+            }
+            let Some(extension) = path.extension() else {
+                return Ok(None);
+            };
+            if extension != "md" {
+                return Ok(None);
+            }
+
+            let slug = path
+                .file_name()
+                .and_then(|n| n.to_str())
+                .unwrap_or_default()
+                .replace(".md", "");
+            let content = fs::read_to_string(path).await?;
+            // world's worst Markdown frontmatter parser
+            let title = content.lines().next().unwrap().replace("# ", "");
+
+            Ok(Some(Post {
+                slug,
+                title,
+                content,
+            }))
+        })
+        .try_collect()
+        .await
+        .map_err(ServerFnError::from)
+}
+
+#[server]
+pub async fn get_post(slug: String) -> Result<Option<Post>, ServerFnError> {
+    println!("reading ./posts/{slug}.md");
+    let content =
+        tokio::fs::read_to_string(&format!("./posts/{slug}.md")).await?;
+    // world's worst Markdown frontmatter parser
+    let title = content.lines().next().unwrap().replace("# ", "");
+
+    Ok(Some(Post {
+        slug,
+        title,
+        content,
+    }))
+}
+
+#[allow(unused)] // path is not used in non-SSR
+fn watch_path(path: &Path) -> impl Stream<Item = ()> {
+    #[allow(unused)]
+    let (mut tx, rx) = mpsc::channel(0);
+
+    #[cfg(feature = "ssr")]
+    {
+        use notify::RecursiveMode;
+        use notify::Watcher;
+
+        let mut watcher =
+            notify::recommended_watcher(move |res: Result<_, _>| {
+                if res.is_ok() {
+                    // if this fails, it's because the buffer is full
+                    // this means we've already notified before it's regenerated,
+                    // so this page will be queued for regeneration already
+                    _ = tx.try_send(());
+                }
+            })
+            .expect("could not create watcher");
+
+        // Add a path to be watched. All files and directories at that path and
+        // below will be monitored for changes.
+        watcher
+            .watch(path, RecursiveMode::NonRecursive)
+            .expect("could not watch path");
+
+        // we want this to run as long as the server is alive
+        std::mem::forget(watcher);
+    }
+
+    rx
+}

examples/static_routing/src/lib.rs

@@ -0,0 +1,9 @@
+pub mod app;
+
+#[cfg(feature = "hydrate")]
+#[wasm_bindgen::prelude::wasm_bindgen]
+pub fn hydrate() {
+    use app::*;
+    console_error_panic_hook::set_once();
+    leptos::mount::hydrate_body(App);
+}

examples/static_routing/src/main.rs

@@ -0,0 +1,42 @@
+#[cfg(feature = "ssr")]
+#[tokio::main]
+async fn main() {
+    use axum::Router;
+    use leptos::prelude::*;
+    use leptos_axum::{generate_route_list_with_ssg, LeptosRoutes};
+    use static_routing::app::*;
+
+    let conf = get_configuration(None).unwrap();
+    let addr = conf.leptos_options.site_addr;
+    let leptos_options = conf.leptos_options;
+    // Generate the list of routes in your Leptos App
+    let (routes, static_routes) = generate_route_list_with_ssg({
+        let leptos_options = leptos_options.clone();
+        move || shell(leptos_options.clone())
+    });
+
+    static_routes.generate(&leptos_options).await;
+
+    let app = Router::new()
+        .leptos_routes(&leptos_options, routes, {
+            let leptos_options = leptos_options.clone();
+            move || shell(leptos_options.clone())
+        })
+        .fallback(leptos_axum::file_and_error_handler(shell))
+        .with_state(leptos_options);
+
+    // run our app with hyper
+    // `axum::Server` is a re-export of `hyper::Server`
+    log!("listening on http://{}", &addr);
+    let listener = tokio::net::TcpListener::bind(&addr).await.unwrap();
+    axum::serve(listener, app.into_make_service())
+        .await
+        .unwrap();
+}
+
+#[cfg(not(feature = "ssr"))]
+pub fn main() {
+    // no client-side main function
+    // unless we want this to work with e.g., Trunk for pure client-side testing
+    // see lib.rs for hydration function instead
+}

examples/static_routing/style/main.scss

@@ -0,0 +1,3 @@
+body {
+	font-family: sans-serif;
+}

integrations/actix/Cargo.toml

@@ -10,6 +10,7 @@ edition.workspace = true
 
 [dependencies]
 actix-http = "3.8"
+actix-files = "0.6"
 actix-web = "4.8"
 futures = "0.3.30"
 any_spawner = { workspace = true, features = ["tokio"] }
@@ -25,6 +26,8 @@ parking_lot = "0.12.3"
 tracing = { version = "0.1", optional = true }
 tokio = { version = "1.39", features = ["rt", "fs"] }
 send_wrapper = "0.6.0"
+dashmap = "6"
+once_cell = "1"
 
 [package.metadata.docs.rs]
 rustdoc-args = ["--generate-link-to-definition"]

integrations/actix/src/lib.rs

@@ -6,30 +6,38 @@
 //! [`examples`](https://github.com/leptos-rs/leptos/tree/main/examples)
 //! directory in the Leptos repository.
 
+use actix_files::NamedFile;
 use actix_http::header::{HeaderName, HeaderValue, ACCEPT, LOCATION, REFERER};
 use actix_web::{
     body::BoxBody,
     dev::{ServiceFactory, ServiceRequest},
     http::header,
-    web::{Payload, ServiceConfig},
+    test,
+    web::{Data, Payload, ServiceConfig},
     *,
 };
+use dashmap::DashMap;
 use futures::{stream::once, Stream, StreamExt};
 use http::StatusCode;
 use hydration_context::SsrSharedContext;
 use leptos::{
+    config::LeptosOptions,
     context::{provide_context, use_context},
+    prelude::expect_context,
     reactive_graph::{computed::ScopedFuture, owner::Owner},
-    IntoView, *,
+    IntoView,
 };
 use leptos_integration_utils::{
     BoxedFnOnce, ExtendResponse, PinnedFuture, PinnedStream,
 };
 use leptos_meta::ServerMetaContext;
 use leptos_router::{
-    components::provide_server_redirect, location::RequestUrl, PathSegment,
+    components::provide_server_redirect,
-    RouteList, RouteListing, SsrMode, StaticDataMap, StaticMode, *,
+    location::RequestUrl,
+    static_routes::{RegenerationFn, ResolvedStaticPath},
+    Method, PathSegment, RouteList, RouteListing, SsrMode,
 };
+use once_cell::sync::Lazy;
 use parking_lot::RwLock;
 use send_wrapper::SendWrapper;
 use server_fn::{
@@ -37,7 +45,9 @@ use server_fn::{
 };
 use std::{
     fmt::{Debug, Display},
+    future::Future,
     ops::{Deref, DerefMut},
+    path::Path,
     sync::Arc,
 };
 
@@ -728,13 +738,25 @@ pub fn render_app_async_with_context<IV>(
 where
     IV: IntoView + 'static,
 {
-    handle_response(method, additional_context, app_fn, |app, chunks| {
+    handle_response(method, additional_context, app_fn, async_stream_builder)
-        Box::pin(async move {
+}
-            let app = app.to_html_stream_in_order().collect::<String>().await;
+
-            let chunks = chunks();
+fn async_stream_builder<IV>(
-            Box::pin(once(async move { app }).chain(chunks))
+    app: IV,
-                as PinnedStream<String>
+    chunks: BoxedFnOnce<PinnedStream<String>>,
-        })
+) -> PinnedFuture<PinnedStream<String>>
+where
+    IV: IntoView + 'static,
+{
+    Box::pin(async move {
+        let app = if cfg!(feature = "islands-router") {
+            app.to_html_stream_in_order_branching()
+        } else {
+            app.to_html_stream_in_order()
+        };
+        let app = app.collect::<String>().await;
+        let chunks = chunks();
+        Box::pin(once(async move { app }).chain(chunks)) as PinnedStream<String>
     })
 }
 
@@ -822,7 +844,7 @@ where
 /// create routes in Actix's App without having to use wildcard matching or fallbacks. Takes in your root app Element
 /// as an argument so it can walk you app tree. This version is tailored to generated Actix compatible paths.
 pub fn generate_route_list<IV>(
-    app_fn: impl Fn() -> IV + 'static + Clone,
+    app_fn: impl Fn() -> IV + 'static + Send + Clone,
 ) -> Vec<ActixRouteListing>
 where
     IV: IntoView + 'static,
@@ -834,8 +856,8 @@ where
 /// create routes in Actix's App without having to use wildcard matching or fallbacks. Takes in your root app Element
 /// as an argument so it can walk you app tree. This version is tailored to generated Actix compatible paths.
 pub fn generate_route_list_with_ssg<IV>(
-    app_fn: impl Fn() -> IV + 'static + Clone,
+    app_fn: impl Fn() -> IV + 'static + Send + Clone,
-) -> (Vec<ActixRouteListing>, StaticDataMap)
+) -> (Vec<ActixRouteListing>, StaticRouteGenerator)
 where
     IV: IntoView + 'static,
 {
@@ -847,7 +869,7 @@ where
 /// as an argument so it can walk you app tree. This version is tailored to generated Actix compatible paths. Adding excluded_routes
 /// to this function will stop `.leptos_routes()` from generating a route for it, allowing a custom handler. These need to be in Actix path format
 pub fn generate_route_list_with_exclusions<IV>(
-    app_fn: impl Fn() -> IV + 'static + Clone,
+    app_fn: impl Fn() -> IV + 'static + Send + Clone,
     excluded_routes: Option<Vec<String>>,
 ) -> Vec<ActixRouteListing>
 where
@@ -861,9 +883,9 @@ where
 /// as an argument so it can walk you app tree. This version is tailored to generated Actix compatible paths. Adding excluded_routes
 /// to this function will stop `.leptos_routes()` from generating a route for it, allowing a custom handler. These need to be in Actix path format
 pub fn generate_route_list_with_exclusions_and_ssg<IV>(
-    app_fn: impl Fn() -> IV + 'static + Clone,
+    app_fn: impl Fn() -> IV + 'static + Send + Clone,
     excluded_routes: Option<Vec<String>>,
-) -> (Vec<ActixRouteListing>, StaticDataMap)
+) -> (Vec<ActixRouteListing>, StaticRouteGenerator)
 where
     IV: IntoView + 'static,
 {
@@ -912,7 +934,7 @@ pub struct ActixRouteListing {
     path: String,
     mode: SsrMode,
     methods: Vec<leptos_router::Method>,
-    static_mode: Option<(StaticMode, StaticDataMap)>,
+    regenerate: Vec<RegenerationFn>,
 }
 
 impl From<RouteListing> for ActixRouteListing {
@@ -925,12 +947,12 @@ impl From<RouteListing> for ActixRouteListing {
         };
         let mode = value.mode();
         let methods = value.methods().collect();
-        let static_mode = value.into_static_parts();
+        let regenerate = value.regenerate().into();
         Self {
             path,
-            mode,
+            mode: mode.clone(),
             methods,
-            static_mode,
+            regenerate,
         }
     }
 }
@@ -941,13 +963,13 @@ impl ActixRouteListing {
         path: String,
         mode: SsrMode,
         methods: impl IntoIterator<Item = leptos_router::Method>,
-        static_mode: Option<(StaticMode, StaticDataMap)>,
+        regenerate: impl Into<Vec<RegenerationFn>>,
     ) -> Self {
         Self {
             path,
             mode,
             methods: methods.into_iter().collect(),
-            static_mode,
+            regenerate: regenerate.into(),
         }
     }
 
@@ -958,19 +980,13 @@ impl ActixRouteListing {
 
     /// The rendering mode for this path.
     pub fn mode(&self) -> SsrMode {
-        self.mode
+        self.mode.clone()
     }
 
     /// The HTTP request methods this path can handle.
     pub fn methods(&self) -> impl Iterator<Item = leptos_router::Method> + '_ {
         self.methods.iter().copied()
     }
-
-    /// Whether this route is statically rendered.
-    #[inline(always)]
-    pub fn static_mode(&self) -> Option<StaticMode> {
-        self.static_mode.as_ref().map(|n| n.0)
-    }
 }
 
 /// Generates a list of all routes defined in Leptos's Router in your app. We can then use this to automatically
@@ -979,10 +995,10 @@ impl ActixRouteListing {
 /// to this function will stop `.leptos_routes()` from generating a route for it, allowing a custom handler. These need to be in Actix path format.
 /// Additional context will be provided to the app Element.
 pub fn generate_route_list_with_exclusions_and_ssg_and_context<IV>(
-    app_fn: impl Fn() -> IV + 'static + Clone,
+    app_fn: impl Fn() -> IV + 'static + Send + Clone,
     excluded_routes: Option<Vec<String>>,
-    additional_context: impl Fn() + 'static + Clone,
+    additional_context: impl Fn() + 'static + Send + Clone,
-) -> (Vec<ActixRouteListing>, StaticDataMap)
+) -> (Vec<ActixRouteListing>, StaticRouteGenerator)
 where
     IV: IntoView + 'static,
 {
@@ -1001,6 +1017,12 @@ where
         })
         .unwrap_or_default();
 
+    let generator = StaticRouteGenerator::new(
+        &routes,
+        app_fn.clone(),
+        additional_context.clone(),
+    );
+
     // Axum's Router defines Root routes as "/" not ""
     let mut routes = routes
         .into_inner()
@@ -1014,7 +1036,7 @@ where
                 "/".to_string(),
                 Default::default(),
                 [leptos_router::Method::Get],
-                None,
+                vec![],
             )]
         } else {
             // Routes to exclude from auto generation
@@ -1024,192 +1046,251 @@ where
             }
             routes
         },
-        StaticDataMap::new(), // TODO
+        generator,
-                              //static_data_map,
     )
 }
 
+/// Allows generating any prerendered routes.
+#[allow(clippy::type_complexity)]
+pub struct StaticRouteGenerator(
+    Box<dyn FnOnce(&LeptosOptions) -> PinnedFuture<()> + Send>,
+);
+
+impl StaticRouteGenerator {
+    fn render_route<IV: IntoView + 'static>(
+        path: String,
+        app_fn: impl Fn() -> IV + Clone + Send + 'static,
+        additional_context: impl Fn() + Clone + Send + 'static,
+    ) -> impl Future<Output = (Owner, String)> {
+        let (meta_context, meta_output) = ServerMetaContext::new();
+        let additional_context = {
+            let add_context = additional_context.clone();
+            move || {
+                let mock_req = test::TestRequest::with_uri(&path)
+                    .insert_header(("Accept", "text/html"))
+                    .to_http_request();
+                let res_options = ResponseOptions::default();
+                provide_contexts(
+                    Request::new(&mock_req),
+                    &meta_context,
+                    &res_options,
+                );
+                add_context();
+            }
+        };
+
+        let (owner, stream) = leptos_integration_utils::build_response(
+            app_fn.clone(),
+            additional_context,
+            async_stream_builder,
+        );
+
+        let sc = owner.shared_context().unwrap();
+
+        async move {
+            let stream = stream.await;
+            while let Some(pending) = sc.await_deferred() {
+                pending.await;
+            }
+
+            let html = meta_output
+                .inject_meta_context(stream)
+                .await
+                .collect::<String>()
+                .await;
+            (owner, html)
+        }
+    }
+
+    /// Creates a new static route generator from the given list of route definitions.
+    pub fn new<IV>(
+        routes: &RouteList,
+        app_fn: impl Fn() -> IV + Clone + Send + 'static,
+        additional_context: impl Fn() + Clone + Send + 'static,
+    ) -> Self
+    where
+        IV: IntoView + 'static,
+    {
+        Self({
+            let routes = routes.clone();
+            Box::new(move |options| {
+                let options = options.clone();
+                let app_fn = app_fn.clone();
+                let additional_context = additional_context.clone();
+
+                Box::pin(routes.generate_static_files(
+                    move |path: &ResolvedStaticPath| {
+                        Self::render_route(
+                            path.to_string(),
+                            app_fn.clone(),
+                            additional_context.clone(),
+                        )
+                    },
+                    move |path: &ResolvedStaticPath,
+                          owner: &Owner,
+                          html: String| {
+                        let options = options.clone();
+                        let path = path.to_owned();
+                        let response_options = owner.with(use_context);
+                        async move {
+                            write_static_route(
+                                &options,
+                                response_options,
+                                path.as_ref(),
+                                &html,
+                            )
+                            .await
+                        }
+                    },
+                    was_404,
+                ))
+            })
+        })
+    }
+
+    /// Generates the routes.
+    pub async fn generate(self, options: &LeptosOptions) {
+        (self.0)(options).await
+    }
+}
+
+static STATIC_HEADERS: Lazy<DashMap<String, ResponseOptions>> =
+    Lazy::new(DashMap::new);
+
+fn was_404(owner: &Owner) -> bool {
+    let resp = owner.with(|| expect_context::<ResponseOptions>());
+    let status = resp.0.read().status;
+
+    if let Some(status) = status {
+        return status == StatusCode::NOT_FOUND;
+    }
+
+    false
+}
+
+fn static_path(options: &LeptosOptions, path: &str) -> String {
+    use leptos_integration_utils::static_file_path;
+
+    // If the path ends with a trailing slash, we generate the path
+    // as a directory with a index.html file inside.
+    if path != "/" && path.ends_with("/") {
+        static_file_path(options, &format!("{}index", path))
+    } else {
+        static_file_path(options, path)
+    }
+}
+
+async fn write_static_route(
+    options: &LeptosOptions,
+    response_options: Option<ResponseOptions>,
+    path: &str,
+    html: &str,
+) -> Result<(), std::io::Error> {
+    if let Some(options) = response_options {
+        STATIC_HEADERS.insert(path.to_string(), options);
+    }
+
+    let path = static_path(options, path);
+    let path = Path::new(&path);
+    if let Some(path) = path.parent() {
+        tokio::fs::create_dir_all(path).await?;
+    }
+    tokio::fs::write(path, &html).await?;
+
+    Ok(())
+}
+
+fn handle_static_route<IV>(
+    additional_context: impl Fn() + 'static + Clone + Send,
+    app_fn: impl Fn() -> IV + Clone + Send + 'static,
+    regenerate: Vec<RegenerationFn>,
+) -> Route
+where
+    IV: IntoView + 'static,
+{
+    let handler = move |req: HttpRequest, data: Data<LeptosOptions>| {
+        Box::pin({
+            let app_fn = app_fn.clone();
+            let additional_context = additional_context.clone();
+            let regenerate = regenerate.clone();
+            async move {
+                let options = data.into_inner();
+                let orig_path = req.uri().path();
+                let path = static_path(&options, orig_path);
+                let path = Path::new(&path);
+                let exists = tokio::fs::try_exists(path).await.unwrap_or(false);
+
+                let (response_options, html) = if !exists {
+                    let path = ResolvedStaticPath::new(orig_path);
+
+                    let (owner, html) = path
+                        .build(
+                            move |path: &ResolvedStaticPath| {
+                                StaticRouteGenerator::render_route(
+                                    path.to_string(),
+                                    app_fn.clone(),
+                                    additional_context.clone(),
+                                )
+                            },
+                            move |path: &ResolvedStaticPath,
+                                  owner: &Owner,
+                                  html: String| {
+                                let options = options.clone();
+                                let path = path.to_owned();
+                                let response_options = owner.with(use_context);
+                                async move {
+                                    write_static_route(
+                                        &options,
+                                        response_options,
+                                        path.as_ref(),
+                                        &html,
+                                    )
+                                    .await
+                                }
+                            },
+                            was_404,
+                            regenerate,
+                        )
+                        .await;
+                    (owner.with(use_context::<ResponseOptions>), html)
+                } else {
+                    let headers =
+                        STATIC_HEADERS.get(orig_path).map(|v| v.clone());
+                    (headers, None)
+                };
+
+                // if html is Some(_), it means that `was_error_response` is true and we're not
+                // actually going to cache this route, just return it as HTML
+                //
+                // this if for thing like 404s, where we do not want to cache an endless series of
+                // typos (or malicious requests)
+                let mut res = ActixResponse(match html {
+                    Some(html) => {
+                        HttpResponse::Ok().content_type("text/html").body(html)
+                    }
+                    None => match NamedFile::open(path) {
+                        Ok(res) => res.into_response(&req),
+                        Err(err) => HttpResponse::InternalServerError()
+                            .body(err.to_string()),
+                    },
+                });
+
+                if let Some(options) = response_options {
+                    res.extend_response(&options);
+                }
+
+                res.0
+            }
+        })
+    };
+    web::get().to(handler)
+}
+
 pub enum DataResponse<T> {
     Data(T),
     Response(actix_web::dev::Response<BoxBody>),
 }
 
-// TODO static response
-/*
-fn handle_static_response<'a, IV>(
-    path: &'a str,
-    options: &'a LeptosOptions,
-    app_fn: &'a (impl Fn() -> IV + Clone + Send + 'static),
-    additional_context: &'a (impl Fn() + 'static + Clone + Send),
-    res: StaticResponse,
-) -> Pin<Box<dyn Future<Output = HttpResponse<String>> + 'a>>
-where
-    IV: IntoView + 'static,
-{
-    Box::pin(async move {
-        match res {
-            StaticResponse::ReturnResponse {
-                body,
-                status,
-                content_type,
-            } => {
-                let mut res = HttpResponse::new(match status {
-                    StaticStatusCode::Ok => StatusCode::OK,
-                    StaticStatusCode::NotFound => StatusCode::NOT_FOUND,
-                    StaticStatusCode::InternalServerError => {
-                        StatusCode::INTERNAL_SERVER_ERROR
-                    }
-                });
-                if let Some(v) = content_type {
-                    res.headers_mut().insert(
-                        HeaderName::from_static("content-type"),
-                        HeaderValue::from_static(v),
-                    );
-                }
-                res.set_body(body)
-            }
-            StaticResponse::RenderDynamic => {
-                handle_static_response(
-                    path,
-                    options,
-                    app_fn,
-                    additional_context,
-                    render_dynamic(
-                        path,
-                        options,
-                        app_fn.clone(),
-                        additional_context.clone(),
-                    )
-                    .await,
-                )
-                .await
-            }
-            StaticResponse::RenderNotFound => {
-                handle_static_response(
-                    path,
-                    options,
-                    app_fn,
-                    additional_context,
-                    not_found_page(
-                        tokio::fs::read_to_string(not_found_path(options))
-                            .await,
-                    ),
-                )
-                .await
-            }
-            StaticResponse::WriteFile { body, path } => {
-                if let Some(path) = path.parent() {
-                    if let Err(e) = std::fs::create_dir_all(path) {
-                        tracing::error!(
-                            "encountered error {} writing directories {}",
-                            e,
-                            path.display()
-                        );
-                    }
-                }
-                if let Err(e) = std::fs::write(&path, &body) {
-                    tracing::error!(
-                        "encountered error {} writing file {}",
-                        e,
-                        path.display()
-                    );
-                }
-                handle_static_response(
-                    path.to_str().unwrap(),
-                    options,
-                    app_fn,
-                    additional_context,
-                    StaticResponse::ReturnResponse {
-                        body,
-                        status: StaticStatusCode::Ok,
-                        content_type: Some("text/html"),
-                    },
-                )
-                .await
-            }
-        }
-    })
-}
-
-fn static_route<IV>(
-    options: LeptosOptions,
-    app_fn: impl Fn() -> IV + Clone + Send + 'static,
-    additional_context: impl Fn() + 'static + Clone + Send,
-    method: Method,
-    mode: StaticMode,
-) -> Route
-where
-    IV: IntoView + 'static,
-{
-    match mode {
-        StaticMode::Incremental => {
-            let handler = move |req: HttpRequest| {
-                Box::pin({
-                    let options = options.clone();
-                    let app_fn = app_fn.clone();
-                    let additional_context = additional_context.clone();
-                    async move {
-                        handle_static_response(
-                            req.path(),
-                            &options,
-                            &app_fn,
-                            &additional_context,
-                            incremental_static_route(
-                                tokio::fs::read_to_string(static_file_path(
-                                    &options,
-                                    req.path(),
-                                ))
-                                .await,
-                            ),
-                        )
-                        .await
-                    }
-                })
-            };
-            match method {
-                Method::Get => web::get().to(handler),
-                Method::Post => web::post().to(handler),
-                Method::Put => web::put().to(handler),
-                Method::Delete => web::delete().to(handler),
-                Method::Patch => web::patch().to(handler),
-            }
-        }
-        StaticMode::Upfront => {
-            let handler = move |req: HttpRequest| {
-                Box::pin({
-                    let options = options.clone();
-                    let app_fn = app_fn.clone();
-                    let additional_context = additional_context.clone();
-                    async move {
-                        handle_static_response(
-                            req.path(),
-                            &options,
-                            &app_fn,
-                            &additional_context,
-                            upfront_static_route(
-                                tokio::fs::read_to_string(static_file_path(
-                                    &options,
-                                    req.path(),
-                                ))
-                                .await,
-                            ),
-                        )
-                        .await
-                    }
-                })
-            };
-            match method {
-                Method::Get => web::get().to(handler),
-                Method::Post => web::post().to(handler),
-                Method::Put => web::put().to(handler),
-                Method::Delete => web::delete().to(handler),
-                Method::Patch => web::patch().to(handler),
-            }
-        }
-    }
-}
-*/
-
 /// This trait allows one to pass a list of routes and a render function to Actix's router, letting us avoid
 /// having to use wildcards or manually define all routes in multiple places.
 pub trait LeptosRoutes {
@@ -1290,19 +1371,15 @@ where
                     provide_context(method);
                     additional_context();
                 };
-                router = if let Some(static_mode) = listing.static_mode() {
+                router = if matches!(listing.mode(), SsrMode::Static(_)) {
-                    _ = static_mode;
+                    router.route(
-                    todo!() /*
+                        path,
-                            router.route(
+                        handle_static_route(
-                                path,
+                            additional_context_and_method.clone(),
-                                static_route(
+                            app_fn.clone(),
-                                    app_fn.clone(),
+                            listing.regenerate.clone(),
-                                    additional_context_and_method.clone(),
+                        ),
-                                    method,
+                    )
-                                    static_mode,
-                                ),
-                            )
-                            */
                 } else {
                     router.route(
                     path,
@@ -1334,6 +1411,7 @@ where
                             app_fn.clone(),
                             method,
                         ),
+                        _ => unreachable!()
                     },
                 )
                 };
@@ -1390,7 +1468,17 @@ impl LeptosRoutes for &mut ServiceConfig {
             let mode = listing.mode();
 
             for method in listing.methods() {
-                router = router.route(
+                if matches!(listing.mode(), SsrMode::Static(_)) {
+                    router = router.route(
+                        path,
+                        handle_static_route(
+                            additional_context.clone(),
+                            app_fn.clone(),
+                            listing.regenerate.clone(),
+                        ),
+                    )
+                } else {
+                    router = router.route(
                             path,
                             match mode {
                                 SsrMode::OutOfOrder => {
@@ -1420,8 +1508,10 @@ impl LeptosRoutes for &mut ServiceConfig {
                                     app_fn.clone(),
                                     method,
                                 ),
+                                _ => unreachable!()
                             },
                         );
+                }
             }
         }
 

integrations/axum/Cargo.toml

@@ -14,6 +14,7 @@ hydration_context = { workspace = true }
 axum = { version = "0.7.5", default-features = false, features = [
   "matched-path",
 ] }
+dashmap = "6"
 futures = "0.3.30"
 http = "1.1"
 http-body-util = "0.1.2"
@@ -23,6 +24,7 @@ leptos_macro = { workspace = true, features = ["axum"] }
 leptos_meta = { workspace = true, features = ["ssr"] }
 leptos_router = { workspace = true, features = ["ssr"] }
 leptos_integration_utils = { workspace = true }
+once_cell = "1"
 parking_lot = "0.12.3"
 serde_json = "1.0"
 tokio = { version = "1.39", default-features = false }

integrations/axum/src/lib.rs

@@ -32,9 +32,11 @@
 //! [`examples`](https://github.com/leptos-rs/leptos/tree/main/examples)
 //! directory in the Leptos repository.
 
+#[cfg(feature = "default")]
+use axum::http::Uri;
 use axum::{
     body::{Body, Bytes},
-    extract::{FromRequestParts, MatchedPath},
+    extract::{FromRef, FromRequestParts, MatchedPath, State},
     http::{
         header::{self, HeaderName, HeaderValue, ACCEPT, LOCATION, REFERER},
         request::Parts,
@@ -44,10 +46,7 @@ use axum::{
     routing::{delete, get, patch, post, put},
 };
 #[cfg(feature = "default")]
-use axum::{
+use dashmap::DashMap;
-    extract::{FromRef, State},
-    http::Uri,
-};
 use futures::{stream::once, Future, Stream, StreamExt};
 use hydration_context::SsrSharedContext;
 use leptos::{
@@ -61,12 +60,20 @@ use leptos_integration_utils::{
     BoxedFnOnce, ExtendResponse, PinnedFuture, PinnedStream,
 };
 use leptos_meta::ServerMetaContext;
+#[cfg(feature = "default")]
+use leptos_router::static_routes::ResolvedStaticPath;
 use leptos_router::{
-    components::provide_server_redirect, location::RequestUrl, PathSegment,
+    components::provide_server_redirect,
-    RouteList, RouteListing, SsrMode, StaticDataMap, StaticMode,
+    location::RequestUrl,
+    static_routes::{RegenerationFn, StaticParamsMap},
+    PathSegment, RouteList, RouteListing, SsrMode,
 };
+#[cfg(feature = "default")]
+use once_cell::sync::Lazy;
 use parking_lot::RwLock;
 use server_fn::{redirect::REDIRECT_HEADER, ServerFnError};
+#[cfg(feature = "default")]
+use std::path::Path;
 use std::{fmt::Debug, io, pin::Pin, sync::Arc};
 #[cfg(feature = "default")]
 use tower::ServiceExt;
@@ -236,14 +243,20 @@ pub fn redirect(path: &str) {
             );
         }
     } else {
-        let msg = "Couldn't retrieve either Parts or ResponseOptions while \
-                   trying to redirect().";
-
         #[cfg(feature = "tracing")]
-        tracing::warn!("{}", &msg);
+        {
-
+            tracing::warn!(
+                "Couldn't retrieve either Parts or ResponseOptions while \
+                 trying to redirect()."
+            );
+        }
         #[cfg(not(feature = "tracing"))]
-        eprintln!("{}", &msg);
+        {
+            eprintln!(
+                "Couldn't retrieve either Parts or ResponseOptions while \
+                 trying to redirect()."
+            );
+        }
     }
 }
 
@@ -497,10 +510,11 @@ where
     feature = "tracing",
     tracing::instrument(level = "trace", fields(error), skip_all)
 )]
-pub fn render_route<IV>(
+pub fn render_route<S, IV>(
     paths: Vec<AxumRouteListing>,
     app_fn: impl Fn() -> IV + Clone + Send + 'static,
 ) -> impl Fn(
+    State<S>,
     Request<Body>,
 ) -> Pin<Box<dyn Future<Output = Response<Body>> + Send + 'static>>
        + Clone
@@ -508,6 +522,8 @@ pub fn render_route<IV>(
        + 'static
 where
     IV: IntoView + 'static,
+    LeptosOptions: FromRef<S>,
+    S: Send + 'static,
 {
     render_route_with_context(paths, || {}, app_fn)
 }
@@ -648,11 +664,12 @@ where
     feature = "tracing",
     tracing::instrument(level = "trace", fields(error), skip_all)
 )]
-pub fn render_route_with_context<IV>(
+pub fn render_route_with_context<S, IV>(
     paths: Vec<AxumRouteListing>,
     additional_context: impl Fn() + 'static + Clone + Send,
     app_fn: impl Fn() -> IV + Clone + Send + 'static,
 ) -> impl Fn(
+    State<S>,
     Request<Body>,
 ) -> Pin<Box<dyn Future<Output = Response<Body>> + Send + 'static>>
        + Clone
@@ -660,6 +677,8 @@ pub fn render_route_with_context<IV>(
        + 'static
 where
     IV: IntoView + 'static,
+    LeptosOptions: FromRef<S>,
+    S: Send + 'static,
 {
     let ooo = render_app_to_stream_with_context(
         additional_context.clone(),
@@ -679,7 +698,7 @@ where
         app_fn.clone(),
     );
 
-    move |req| {
+    move |state, req| {
         // 1. Process route to match the values in routeListing
         let path = req
             .extensions()
@@ -702,6 +721,25 @@ where
             SsrMode::PartiallyBlocked => pb(req),
             SsrMode::InOrder => io(req),
             SsrMode::Async => asyn(req),
+            SsrMode::Static(_) => {
+                #[cfg(feature = "default")]
+                {
+                    let regenerate = listing.regenerate.clone();
+                    handle_static_route(
+                        additional_context.clone(),
+                        app_fn.clone(),
+                        regenerate,
+                    )(state, req)
+                }
+                #[cfg(not(feature = "default"))]
+                {
+                    _ = state;
+                    panic!(
+                        "Static routes are not currently supported on WASM32 \
+                         server targets."
+                    );
+                }
+            }
         }
     }
 }
@@ -1097,18 +1135,25 @@ pub fn render_app_async_with_context<IV>(
 where
     IV: IntoView + 'static,
 {
-    handle_response(additional_context, app_fn, |app, chunks| {
+    handle_response(additional_context, app_fn, async_stream_builder)
-        Box::pin(async move {
+}
-            let app = if cfg!(feature = "islands-router") {
+
-                app.to_html_stream_in_order_branching()
+fn async_stream_builder<IV>(
-            } else {
+    app: IV,
-                app.to_html_stream_in_order()
+    chunks: BoxedFnOnce<PinnedStream<String>>,
-            };
+) -> PinnedFuture<PinnedStream<String>>
-            let app = app.collect::<String>().await;
+where
-            let chunks = chunks();
+    IV: IntoView + 'static,
-            Box::pin(once(async move { app }).chain(chunks))
+{
-                as PinnedStream<String>
+    Box::pin(async move {
-        })
+        let app = if cfg!(feature = "islands-router") {
+            app.to_html_stream_in_order_branching()
+        } else {
+            app.to_html_stream_in_order()
+        };
+        let app = app.collect::<String>().await;
+        let chunks = chunks();
+        Box::pin(once(async move { app }).chain(chunks)) as PinnedStream<String>
     })
 }
 
@@ -1120,7 +1165,7 @@ where
     tracing::instrument(level = "trace", fields(error), skip_all)
 )]
 pub fn generate_route_list<IV>(
-    app_fn: impl Fn() -> IV + 'static + Clone,
+    app_fn: impl Fn() -> IV + 'static + Clone + Send,
 ) -> Vec<AxumRouteListing>
 where
     IV: IntoView + 'static,
@@ -1128,7 +1173,7 @@ where
     generate_route_list_with_exclusions_and_ssg(app_fn, None).0
 }
 
-/// Generates a list of all routes defined in Leptos's Router in your app. We can then use this to automatically
+/// Generates a list of all routes defined in Leptos's Router in your app. We can then use t.clone()his to automatically
 /// create routes in Axum's Router without having to use wildcard matching or fallbacks. Takes in your root app Element
 /// as an argument so it can walk you app tree. This version is tailored to generate Axum compatible paths.
 #[cfg_attr(
@@ -1136,8 +1181,8 @@ where
     tracing::instrument(level = "trace", fields(error), skip_all)
 )]
 pub fn generate_route_list_with_ssg<IV>(
-    app_fn: impl Fn() -> IV + 'static + Clone,
+    app_fn: impl Fn() -> IV + 'static + Clone + Send,
-) -> (Vec<AxumRouteListing>, StaticDataMap)
+) -> (Vec<AxumRouteListing>, StaticRouteGenerator)
 where
     IV: IntoView + 'static,
 {
@@ -1153,7 +1198,7 @@ where
     tracing::instrument(level = "trace", fields(error), skip_all)
 )]
 pub fn generate_route_list_with_exclusions<IV>(
-    app_fn: impl Fn() -> IV + 'static + Clone,
+    app_fn: impl Fn() -> IV + 'static + Clone + Send,
     excluded_routes: Option<Vec<String>>,
 ) -> Vec<AxumRouteListing>
 where
@@ -1162,13 +1207,13 @@ where
     generate_route_list_with_exclusions_and_ssg(app_fn, excluded_routes).0
 }
 
-/// TODO docs
+/// Builds all routes that have been defined using [`StaticRoute`].
 #[allow(unused)]
 pub async fn build_static_routes<IV>(
     options: &LeptosOptions,
     app_fn: impl Fn() -> IV + 'static + Send + Clone,
     routes: &[RouteListing],
-    static_data_map: StaticDataMap,
+    static_data_map: StaticParamsMap,
 ) where
     IV: IntoView + 'static,
 {
@@ -1197,9 +1242,9 @@ pub async fn build_static_routes<IV>(
     tracing::instrument(level = "trace", fields(error), skip_all)
 )]
 pub fn generate_route_list_with_exclusions_and_ssg<IV>(
-    app_fn: impl Fn() -> IV + 'static + Clone,
+    app_fn: impl Fn() -> IV + 'static + Clone + Send,
     excluded_routes: Option<Vec<String>>,
-) -> (Vec<AxumRouteListing>, StaticDataMap)
+) -> (Vec<AxumRouteListing>, StaticRouteGenerator)
 where
     IV: IntoView + 'static,
 {
@@ -1216,7 +1261,8 @@ pub struct AxumRouteListing {
     path: String,
     mode: SsrMode,
     methods: Vec<leptos_router::Method>,
-    static_mode: Option<(StaticMode, StaticDataMap)>,
+    #[allow(unused)]
+    regenerate: Vec<RegenerationFn>,
 }
 
 impl From<RouteListing> for AxumRouteListing {
@@ -1229,12 +1275,12 @@ impl From<RouteListing> for AxumRouteListing {
         };
         let mode = value.mode();
         let methods = value.methods().collect();
-        let static_mode = value.into_static_parts();
+        let regenerate = value.regenerate().into();
         Self {
             path,
-            mode,
+            mode: mode.clone(),
             methods,
-            static_mode,
+            regenerate,
         }
     }
 }
@@ -1245,13 +1291,13 @@ impl AxumRouteListing {
         path: String,
         mode: SsrMode,
         methods: impl IntoIterator<Item = leptos_router::Method>,
-        static_mode: Option<(StaticMode, StaticDataMap)>,
+        regenerate: impl Into<Vec<RegenerationFn>>,
     ) -> Self {
         Self {
             path,
             mode,
             methods: methods.into_iter().collect(),
-            static_mode,
+            regenerate: regenerate.into(),
         }
     }
 
@@ -1261,20 +1307,14 @@ impl AxumRouteListing {
     }
 
     /// The rendering mode for this path.
-    pub fn mode(&self) -> SsrMode {
+    pub fn mode(&self) -> &SsrMode {
-        self.mode
+        &self.mode
     }
 
     /// The HTTP request methods this path can handle.
     pub fn methods(&self) -> impl Iterator<Item = leptos_router::Method> + '_ {
         self.methods.iter().copied()
     }
-
-    /// Whether this route is statically rendered.
-    #[inline(always)]
-    pub fn static_mode(&self) -> Option<StaticMode> {
-        self.static_mode.as_ref().map(|n| n.0)
-    }
 }
 
 /// Generates a list of all routes defined in Leptos's Router in your app. We can then use this to automatically
@@ -1287,16 +1327,17 @@ impl AxumRouteListing {
     tracing::instrument(level = "trace", fields(error), skip_all)
 )]
 pub fn generate_route_list_with_exclusions_and_ssg_and_context<IV>(
-    app_fn: impl Fn() -> IV + 'static + Clone,
+    app_fn: impl Fn() -> IV + Clone + Send + 'static,
     excluded_routes: Option<Vec<String>>,
-    additional_context: impl Fn() + 'static + Clone,
+    additional_context: impl Fn() + Clone + Send + 'static,
-) -> (Vec<AxumRouteListing>, StaticDataMap)
+) -> (Vec<AxumRouteListing>, StaticRouteGenerator)
 where
     IV: IntoView + 'static,
 {
+    // do some basic reactive setup
     init_executor();
-
     let owner = Owner::new_root(Some(Arc::new(SsrSharedContext::new())));
+
     let routes = owner
         .with(|| {
             // stub out a path for now
@@ -1310,6 +1351,12 @@ where
         })
         .unwrap_or_default();
 
+    let generator = StaticRouteGenerator::new(
+        &routes,
+        app_fn.clone(),
+        additional_context.clone(),
+    );
+
     // Axum's Router defines Root routes as "/" not ""
     let mut routes = routes
         .into_inner()
@@ -1323,7 +1370,7 @@ where
                 "/".to_string(),
                 Default::default(),
                 [leptos_router::Method::Get],
-                None,
+                vec![],
             )]
         } else {
             // Routes to exclude from auto generation
@@ -1333,16 +1380,284 @@ where
             }
             routes
         },
-        StaticDataMap::new(), // TODO
+        generator,
-                              //static_data_map,
     )
 }
 
+/// Allows generating any prerendered routes.
+#[allow(clippy::type_complexity)]
+pub struct StaticRouteGenerator(
+    Box<dyn FnOnce(&LeptosOptions) -> PinnedFuture<()> + Send>,
+);
+
+impl StaticRouteGenerator {
+    #[cfg(feature = "default")]
+    fn render_route<IV: IntoView + 'static>(
+        path: String,
+        app_fn: impl Fn() -> IV + Clone + Send + 'static,
+        additional_context: impl Fn() + Clone + Send + 'static,
+    ) -> impl Future<Output = (Owner, String)> {
+        let (meta_context, meta_output) = ServerMetaContext::new();
+        let additional_context = {
+            let add_context = additional_context.clone();
+            move || {
+                let full_path = format!("http://leptos.dev{path}");
+                let mock_req = http::Request::builder()
+                    .method(http::Method::GET)
+                    .header("Accept", "text/html")
+                    .body(Body::empty())
+                    .unwrap();
+                let (mock_parts, _) = mock_req.into_parts();
+                let res_options = ResponseOptions::default();
+                provide_contexts(
+                    &full_path,
+                    &meta_context,
+                    mock_parts,
+                    res_options,
+                );
+                add_context();
+            }
+        };
+
+        let (owner, stream) = leptos_integration_utils::build_response(
+            app_fn.clone(),
+            additional_context,
+            async_stream_builder,
+        );
+
+        let sc = owner.shared_context().unwrap();
+
+        async move {
+            let stream = stream.await;
+            while let Some(pending) = sc.await_deferred() {
+                pending.await;
+            }
+
+            let html = meta_output
+                .inject_meta_context(stream)
+                .await
+                .collect::<String>()
+                .await;
+            (owner, html)
+        }
+    }
+
+    /// Creates a new static route generator from the given list of route definitions.
+    pub fn new<IV>(
+        routes: &RouteList,
+        app_fn: impl Fn() -> IV + Clone + Send + 'static,
+        additional_context: impl Fn() + Clone + Send + 'static,
+    ) -> Self
+    where
+        IV: IntoView + 'static,
+    {
+        #[cfg(feature = "default")]
+        {
+            Self({
+                let routes = routes.clone();
+                Box::new(move |options| {
+                    let options = options.clone();
+                    let app_fn = app_fn.clone();
+                    let additional_context = additional_context.clone();
+
+                    Box::pin(routes.generate_static_files(
+                        move |path: &ResolvedStaticPath| {
+                            Self::render_route(
+                                path.to_string(),
+                                app_fn.clone(),
+                                additional_context.clone(),
+                            )
+                        },
+                        move |path: &ResolvedStaticPath,
+                              owner: &Owner,
+                              html: String| {
+                            let options = options.clone();
+                            let path = path.to_owned();
+                            let response_options = owner.with(use_context);
+                            async move {
+                                write_static_route(
+                                    &options,
+                                    response_options,
+                                    path.as_ref(),
+                                    &html,
+                                )
+                                .await
+                            }
+                        },
+                        was_404,
+                    ))
+                })
+            })
+        }
+
+        #[cfg(not(feature = "default"))]
+        {
+            _ = routes;
+            _ = app_fn;
+            _ = additional_context;
+            panic!(
+                "Static routes are not currently supported on WASM32 server \
+                 targets."
+            );
+        }
+    }
+
+    /// Generates the routes.
+    pub async fn generate(self, options: &LeptosOptions) {
+        (self.0)(options).await
+    }
+}
+
+#[cfg(feature = "default")]
+static STATIC_HEADERS: Lazy<DashMap<String, ResponseOptions>> =
+    Lazy::new(DashMap::new);
+
+#[cfg(feature = "default")]
+fn was_404(owner: &Owner) -> bool {
+    let resp = owner.with(|| expect_context::<ResponseOptions>());
+    let status = resp.0.read().status;
+
+    if let Some(status) = status {
+        return status == StatusCode::NOT_FOUND;
+    }
+
+    false
+}
+
+#[cfg(feature = "default")]
+fn static_path(options: &LeptosOptions, path: &str) -> String {
+    use leptos_integration_utils::static_file_path;
+
+    // If the path ends with a trailing slash, we generate the path
+    // as a directory with a index.html file inside.
+    if path != "/" && path.ends_with("/") {
+        static_file_path(options, &format!("{}index", path))
+    } else {
+        static_file_path(options, path)
+    }
+}
+
+#[cfg(feature = "default")]
+async fn write_static_route(
+    options: &LeptosOptions,
+    response_options: Option<ResponseOptions>,
+    path: &str,
+    html: &str,
+) -> Result<(), std::io::Error> {
+    if let Some(options) = response_options {
+        STATIC_HEADERS.insert(path.to_string(), options);
+    }
+
+    let path = static_path(options, path);
+    let path = Path::new(&path);
+    if let Some(path) = path.parent() {
+        tokio::fs::create_dir_all(path).await?;
+    }
+    tokio::fs::write(path, &html).await?;
+
+    Ok(())
+}
+
+#[cfg(feature = "default")]
+fn handle_static_route<S, IV>(
+    additional_context: impl Fn() + 'static + Clone + Send,
+    app_fn: impl Fn() -> IV + Clone + Send + 'static,
+    regenerate: Vec<RegenerationFn>,
+) -> impl Fn(
+    State<S>,
+    Request<Body>,
+) -> Pin<Box<dyn Future<Output = Response<Body>> + Send + 'static>>
+       + Clone
+       + Send
+       + 'static
+where
+    LeptosOptions: FromRef<S>,
+    S: Send + 'static,
+    IV: IntoView + 'static,
+{
+    use tower_http::services::ServeFile;
+
+    move |state, req| {
+        let app_fn = app_fn.clone();
+        let additional_context = additional_context.clone();
+        let regenerate = regenerate.clone();
+        Box::pin(async move {
+            let options = LeptosOptions::from_ref(&state);
+            let orig_path = req.uri().path();
+            let path = static_path(&options, orig_path);
+            let path = Path::new(&path);
+            let exists = tokio::fs::try_exists(path).await.unwrap_or(false);
+
+            let (response_options, html) = if !exists {
+                let path = ResolvedStaticPath::new(orig_path);
+
+                let (owner, html) = path
+                    .build(
+                        move |path: &ResolvedStaticPath| {
+                            StaticRouteGenerator::render_route(
+                                path.to_string(),
+                                app_fn.clone(),
+                                additional_context.clone(),
+                            )
+                        },
+                        move |path: &ResolvedStaticPath,
+                              owner: &Owner,
+                              html: String| {
+                            let options = options.clone();
+                            let path = path.to_owned();
+                            let response_options = owner.with(use_context);
+                            async move {
+                                write_static_route(
+                                    &options,
+                                    response_options,
+                                    path.as_ref(),
+                                    &html,
+                                )
+                                .await
+                            }
+                        },
+                        was_404,
+                        regenerate,
+                    )
+                    .await;
+                (owner.with(use_context::<ResponseOptions>), html)
+            } else {
+                let headers = STATIC_HEADERS.get(orig_path).map(|v| v.clone());
+                (headers, None)
+            };
+
+            // if html is Some(_), it means that `was_error_response` is true and we're not
+            // actually going to cache this route, just return it as HTML
+            //
+            // this if for thing like 404s, where we do not want to cache an endless series of
+            // typos (or malicious requests)
+            let mut res = AxumResponse(match html {
+                Some(html) => axum::response::Html(html).into_response(),
+                None => match ServeFile::new(path).oneshot(req).await {
+                    Ok(res) => res.into_response(),
+                    Err(err) => (
+                        StatusCode::INTERNAL_SERVER_ERROR,
+                        format!("Something went wrong: {err}"),
+                    )
+                        .into_response(),
+                },
+            });
+
+            if let Some(options) = response_options {
+                res.extend_response(&options);
+            }
+
+            res.0
+        })
+    }
+}
+
 /// This trait allows one to pass a list of routes and a render function to Axum's router, letting us avoid
 /// having to use wildcards or manually define all routes in multiple places.
 pub trait LeptosRoutes<S>
 where
     S: Clone + Send + Sync + 'static,
+    LeptosOptions: FromRef<S>,
 {
     fn leptos_routes<IV>(
         self,
@@ -1372,209 +1687,6 @@ where
         H: axum::handler::Handler<T, S>,
         T: 'static;
 }
-/*
-#[cfg(feature = "default")]
-fn handle_static_response<IV>(
-    path: String,
-    options: LeptosOptions,
-    app_fn: impl Fn() -> IV + Clone + Send + 'static,
-    additional_context: impl Fn() + Clone + Send + 'static,
-    res: StaticResponse,
-) -> Pin<Box<dyn Future<Output = Response<String>> + 'static>>
-where
-    IV: IntoView + 'static,
-{
-    Box::pin(async move {
-        match res {
-            StaticResponse::ReturnResponse {
-                body,
-                status,
-                content_type,
-            } => {
-                let mut res = Response::new(body);
-                if let Some(v) = content_type {
-                    res.headers_mut().insert(
-                        HeaderName::from_static("content-type"),
-                        HeaderValue::from_static(v),
-                    );
-                }
-                *res.status_mut() = match status {
-                    StaticStatusCode::Ok => StatusCode::OK,
-                    StaticStatusCode::NotFound => StatusCode::NOT_FOUND,
-                    StaticStatusCode::InternalServerError => {
-                        StatusCode::INTERNAL_SERVER_ERROR
-                    }
-                };
-                res
-            }
-            StaticResponse::RenderDynamic => {
-                let res = render_dynamic(
-                    &path,
-                    &options,
-                    app_fn.clone(),
-                    additional_context.clone(),
-                )
-                .await;
-                handle_static_response(
-                    path,
-                    options,
-                    app_fn,
-                    additional_context,
-                    res,
-                )
-                .await
-            }
-            StaticResponse::RenderNotFound => {
-                let res = not_found_page(
-                    tokio::fs::read_to_string(not_found_path(&options)).await,
-                );
-                handle_static_response(
-                    path,
-                    options,
-                    app_fn,
-                    additional_context,
-                    res,
-                )
-                .await
-            }
-            StaticResponse::WriteFile { body, path } => {
-                if let Some(path) = path.parent() {
-                    if let Err(e) = std::fs::create_dir_all(path) {
-                        tracing::error!(
-                            "encountered error {} writing directories {}",
-                            e,
-                            path.display()
-                        );
-                    }
-                }
-                if let Err(e) = std::fs::write(&path, &body) {
-                    tracing::error!(
-                        "encountered error {} writing file {}",
-                        e,
-                        path.display()
-                    );
-                }
-                handle_static_response(
-                    path.to_str().unwrap().to_string(),
-                    options,
-                    app_fn,
-                    additional_context,
-                    StaticResponse::ReturnResponse {
-                        body,
-                        status: StaticStatusCode::Ok,
-                        content_type: Some("text/html"),
-                    },
-                )
-                .await
-            }
-        }
-    })
-}*/
-
-#[allow(unused)] // TODO
-#[cfg(feature = "default")]
-fn static_route<IV, S>(
-    router: axum::Router<S>,
-    path: &str,
-    app_fn: impl Fn() -> IV + Clone + Send + 'static,
-    additional_context: impl Fn() + Clone + Send + 'static,
-    method: leptos_router::Method,
-    mode: StaticMode,
-) -> axum::Router<S>
-where
-    IV: IntoView + 'static,
-    S: Clone + Send + Sync + 'static,
-{
-    todo!()
-    /*match mode {
-        StaticMode::Incremental => {
-            let handler = move |req: Request<Body>| {
-                Box::pin({
-                    let path = req.uri().path().to_string();
-                    let options = options.clone();
-                    let app_fn = app_fn.clone();
-                    let additional_context = additional_context.clone();
-
-                    async move {
-                        let (tx, rx) = futures::channel::oneshot::channel();
-                        spawn_task!(async move {
-                            let res = incremental_static_route(
-                                tokio::fs::read_to_string(static_file_path(
-                                    &options, &path,
-                                ))
-                                .await,
-                            );
-                            let res = handle_static_response(
-                                path.clone(),
-                                options,
-                                app_fn,
-                                additional_context,
-                                res,
-                            )
-                            .await;
-
-                            let _ = tx.send(res);
-                        });
-                        rx.await.expect("to complete HTML rendering")
-                    }
-                })
-            };
-            router.route(
-                path,
-                match method {
-                    leptos_router::Method::Get => get(handler),
-                    leptos_router::Method::Post => post(handler),
-                    leptos_router::Method::Put => put(handler),
-                    leptos_router::Method::Delete => delete(handler),
-                    leptos_router::Method::Patch => patch(handler),
-                },
-            )
-        }
-        StaticMode::Upfront => {
-            let handler = move |req: Request<Body>| {
-                Box::pin({
-                    let path = req.uri().path().to_string();
-                    let options = options.clone();
-                    let app_fn = app_fn.clone();
-                    let additional_context = additional_context.clone();
-
-                    async move {
-                        let (tx, rx) = futures::channel::oneshot::channel();
-                        spawn_task!(async move {
-                            let res = upfront_static_route(
-                                tokio::fs::read_to_string(static_file_path(
-                                    &options, &path,
-                                ))
-                                .await,
-                            );
-                            let res = handle_static_response(
-                                path.clone(),
-                                options,
-                                app_fn,
-                                additional_context,
-                                res,
-                            )
-                            .await;
-
-                            let _ = tx.send(res);
-                        });
-                        rx.await.expect("to complete HTML rendering")
-                    }
-                })
-            };
-            router.route(
-                path,
-                match method {
-                    leptos_router::Method::Get => get(handler),
-                    leptos_router::Method::Post => post(handler),
-                    leptos_router::Method::Put => put(handler),
-                    leptos_router::Method::Delete => delete(handler),
-                    leptos_router::Method::Patch => patch(handler),
-                },
-            )
-        }
-    }*/
-}
 
 trait AxumPath {
     fn to_axum_path(&self) -> String;
@@ -1611,6 +1723,7 @@ impl AxumPath for &[PathSegment] {
 impl<S> LeptosRoutes<S> for axum::Router<S>
 where
     S: Clone + Send + Sync + 'static,
+    LeptosOptions: FromRef<S>,
 {
     #[cfg_attr(
         feature = "tracing",
@@ -1688,25 +1801,24 @@ where
                     provide_context(method);
                     cx_with_state();
                 };
-                router = if let Some(static_mode) = listing.static_mode() {
+                router = if matches!(listing.mode(), SsrMode::Static(_)) {
                     #[cfg(feature = "default")]
                     {
-                        static_route(
+                        router.route(
-                            router,
                             path,
-                            app_fn.clone(),
+                            get(handle_static_route(
-                            cx_with_state_and_method.clone(),
+                                cx_with_state_and_method.clone(),
-                            method,
+                                app_fn.clone(),
-                            static_mode,
+                                listing.regenerate.clone(),
+                            )),
                         )
                     }
                     #[cfg(not(feature = "default"))]
                     {
-                        _ = static_mode;
                         panic!(
-                            "Static site generation is not currently \
+                            "Static routes are not currently supported on \
-                             supported on WASM32 server targets."
+                             WASM32 server targets."
-                        )
+                        );
                     }
                 } else {
                     router.route(
@@ -1765,6 +1877,7 @@ where
                                 leptos_router::Method::Patch => patch(s),
                             }
                         }
+                        _ => unreachable!()
                     },
                 )
                 };

integrations/utils/src/lib.rs

@@ -5,6 +5,7 @@ use leptos::{
     reactive_graph::owner::{Owner, Sandboxed},
     IntoView,
 };
+use leptos_config::LeptosOptions;
 use leptos_meta::ServerMetaContextOutput;
 use std::{future::Future, pin::Pin, sync::Arc};
 
@@ -132,3 +133,13 @@ where
     }));
     (owner, stream)
 }
+
+pub fn static_file_path(options: &LeptosOptions, path: &str) -> String {
+    let trimmed_path = path.trim_start_matches('/');
+    let path = if trimmed_path.is_empty() {
+        "index"
+    } else {
+        trimmed_path
+    };
+    format!("{}/{}.html", options.site_root, path)
+}

leptos/src/suspense_component.rs

@@ -264,7 +264,6 @@ where
     {
         buf.next_id();
         let suspense_context = use_context::<SuspenseContext>().unwrap();
-
         let owner = Owner::current().unwrap();
 
         // we need to wait for one of two things: either
@@ -277,6 +276,16 @@ where
             futures::channel::oneshot::channel::<()>();
 
         let mut tasks_tx = Some(tasks_tx);
+
+        // now, create listener for local resources
+        let (local_tx, mut local_rx) =
+            futures::channel::oneshot::channel::<()>();
+        provide_context(LocalResourceNotifier::from(local_tx));
+
+        // walk over the tree of children once to make sure that all resource loads are registered
+        self.children.dry_resolve();
+
+        // check the set of tasks to see if it is empty, now or later
         let eff = reactive_graph::effect::RenderEffect::new_isomorphic({
             move |_| {
                 tasks.track();
@@ -290,14 +299,6 @@ where
             }
         });
 
-        // now, create listener for local resources
-        let (local_tx, mut local_rx) =
-            futures::channel::oneshot::channel::<()>();
-        provide_context(LocalResourceNotifier::from(local_tx));
-
-        // walk over the tree of children once to make sure that all resource loads are registered
-        self.children.dry_resolve();
-
         let mut fut = Box::pin(ScopedFuture::new(ErrorHookFuture::new(
             async move {
                 // race the local resource notifier against the set of tasks

reactive_graph/src/owner/context.rs

@@ -1,6 +1,9 @@
 use crate::owner::Owner;
 use or_poisoned::OrPoisoned;
-use std::any::{Any, TypeId};
+use std::{
+    any::{Any, TypeId},
+    collections::VecDeque,
+};
 
 impl Owner {
     fn provide_context<T: Send + Sync + 'static>(&self, value: T) {
@@ -60,6 +63,35 @@ impl Owner {
             None
         }
     }
+
+    /// Searches for items stored in context in either direction, either among parents or among
+    /// descendants.
+    pub fn use_context_bidirectional<T: Clone + 'static>(&self) -> Option<T> {
+        self.use_context()
+            .unwrap_or_else(|| self.find_context_in_children())
+    }
+
+    fn find_context_in_children<T: Clone + 'static>(&self) -> Option<T> {
+        let ty = TypeId::of::<T>();
+        let inner = self.inner.read().or_poisoned();
+        let mut to_search = VecDeque::new();
+        to_search.extend(inner.children.clone());
+        drop(inner);
+
+        while let Some(next) = to_search.pop_front() {
+            if let Some(child) = next.upgrade() {
+                let child = child.read().or_poisoned();
+                let contexts = &child.contexts;
+                if let Some(context) = contexts.get(&ty) {
+                    return context.downcast_ref::<T>().cloned();
+                }
+
+                to_search.extend(child.children.clone());
+            }
+        }
+
+        None
+    }
 }
 
 /// Provides a context value of type `T` to the current reactive [`Owner`]

router/Cargo.toml

@@ -28,6 +28,7 @@ send_wrapper = "0.6.0"
 thiserror = "1.0"
 percent-encoding = { version = "2.3", optional = true }
 gloo-net = "0.6.0"
+serde = { version = "1", features = ["derive"] }
 
 [dependencies.web-sys]
 version = "0.3.70"

router/src/components.rs

@@ -450,6 +450,12 @@ pub fn Redirect<P>(
                 "Calling <Redirect/> without a ServerRedirectFunction \
                  provided, in SSR mode."
             );
+
+            #[cfg(not(feature = "tracing"))]
+            eprintln!(
+                "Calling <Redirect/> without a ServerRedirectFunction \
+                 provided, in SSR mode."
+            );
             return;
         }
         let navigate = use_navigate();

router/src/flat_router.rs

@@ -2,8 +2,8 @@ use crate::{
     location::{LocationProvider, Url},
     matching::Routes,
     params::ParamsMap,
-    ChooseView, MatchInterface, MatchNestedRoutes, MatchParams, Method,
+    ChooseView, MatchInterface, MatchNestedRoutes, MatchParams, PathSegment,
-    PathSegment, RouteList, RouteListing, RouteMatchId,
+    RouteList, RouteListing, RouteMatchId,
 };
 use any_spawner::Executor;
 use either_of::{Either, EitherOf3};
@@ -511,10 +511,8 @@ where
                     RouteListing::new(
                         path,
                         data.ssr_mode,
-                        // TODO methods
+                        data.methods,
-                        [Method::Get],
+                        data.regenerate,
-                        // TODO static data
-                        None,
                     )
                 })
                 .collect::<Vec<_>>();

router/src/generate_route_list.rs

@@ -1,9 +1,17 @@
 use crate::{
-    matching::PathSegment, Method, SsrMode, StaticDataMap, StaticMode,
+    matching::PathSegment,
+    static_routes::{
+        RegenerationFn, ResolvedStaticPath, StaticPath, StaticRoute,
+    },
+    Method, SsrMode,
 };
+use futures::future::join_all;
+use reactive_graph::owner::Owner;
 use std::{
     cell::{Cell, RefCell},
     collections::HashSet,
+    future::Future,
+    mem,
 };
 use tachys::{renderer::Renderer, view::RenderHtml};
 
@@ -13,7 +21,7 @@ pub struct RouteListing {
     path: Vec<PathSegment>,
     mode: SsrMode,
     methods: HashSet<Method>,
-    static_mode: Option<(StaticMode, StaticDataMap)>,
+    regenerate: Vec<RegenerationFn>,
 }
 
 impl RouteListing {
@@ -22,19 +30,19 @@ impl RouteListing {
         path: impl IntoIterator<Item = PathSegment>,
         mode: SsrMode,
         methods: impl IntoIterator<Item = Method>,
-        static_mode: Option<(StaticMode, StaticDataMap)>,
+        regenerate: impl IntoIterator<Item = RegenerationFn>,
     ) -> Self {
         Self {
             path: path.into_iter().collect(),
             mode,
             methods: methods.into_iter().collect(),
-            static_mode,
+            regenerate: regenerate.into_iter().collect(),
         }
     }
 
     /// Create a route listing from a path, with the other fields set to default values.
     pub fn from_path(path: impl IntoIterator<Item = PathSegment>) -> Self {
-        Self::new(path, SsrMode::Async, [], None)
+        Self::new(path, SsrMode::Async, [], [])
     }
 
     /// The path this route handles.
@@ -43,8 +51,8 @@ impl RouteListing {
     }
 
     /// The rendering mode for this path.
-    pub fn mode(&self) -> SsrMode {
+    pub fn mode(&self) -> &SsrMode {
-        self.mode
+        &self.mode
     }
 
     /// The HTTP request methods this path can handle.
@@ -52,56 +60,95 @@ impl RouteListing {
         self.methods.iter().copied()
     }
 
-    /// Whether this route is statically rendered.
+    /// The set of regeneration functions that should be applied to this route, if it is statically
-    #[inline(always)]
+    /// generated (either up front or incrementally).
-    pub fn static_mode(&self) -> Option<StaticMode> {
+    pub fn regenerate(&self) -> &[RegenerationFn] {
-        self.static_mode.as_ref().map(|n| n.0)
+        &self.regenerate
     }
 
     /// Whether this route is statically rendered.
     #[inline(always)]
-    pub fn static_data_map(&self) -> Option<&StaticDataMap> {
+    pub fn static_route(&self) -> Option<&StaticRoute> {
-        self.static_mode.as_ref().map(|n| &n.1)
+        match self.mode {
+            SsrMode::Static(ref route) => Some(route),
+            _ => None,
+        }
     }
 
-    pub fn into_static_parts(self) -> Option<(StaticMode, StaticDataMap)> {
+    pub async fn into_static_paths(self) -> Option<Vec<ResolvedStaticPath>> {
-        self.static_mode
+        let params = self.static_route()?.to_prerendered_params().await;
+        Some(StaticPath::new(self.path).into_paths(params))
+    }
+
+    pub async fn generate_static_files<Fut, WriterFut>(
+        mut self,
+        render_fn: impl Fn(&ResolvedStaticPath) -> Fut + Send + Clone + 'static,
+        writer: impl Fn(&ResolvedStaticPath, &Owner, String) -> WriterFut
+            + Send
+            + Clone
+            + 'static,
+        was_404: impl Fn(&Owner) -> bool + Send + Clone + 'static,
+    ) where
+        Fut: Future<Output = (Owner, String)> + Send + 'static,
+        WriterFut: Future<Output = Result<(), std::io::Error>> + Send + 'static,
+    {
+        if let SsrMode::Static(_) = self.mode() {
+            let (all_initial_tx, all_initial_rx) = std::sync::mpsc::channel();
+
+            let render_fn = render_fn.clone();
+            let regenerate = mem::take(&mut self.regenerate);
+            let paths = self.into_static_paths().await.unwrap_or_default();
+
+            for path in paths {
+                // Err(_) here would just mean they've dropped the rx and are no longer awaiting
+                // it; we're only using it to notify them it's done so it doesn't matter in that
+                // case
+                _ = all_initial_tx.send(path.build(
+                    render_fn.clone(),
+                    writer.clone(),
+                    was_404.clone(),
+                    regenerate.clone(),
+                ));
+            }
+
+            join_all(all_initial_rx.try_iter()).await;
+        }
     }
 
     /*
-    /// Build a route statically, will return `Ok(true)` on success or `Ok(false)` when the route
+        /// Build a route statically, will return `Ok(true)` on success or `Ok(false)` when the route
-    /// is not marked as statically rendered. All route parameters to use when resolving all paths
+        /// is not marked as statically rendered. All route parameters to use when resolving all paths
-    /// to render should be passed in the `params` argument.
+        /// to render should be passed in the `params` argument.
-    pub async fn build_static<IV>(
+        pub async fn build_static<IV>(
-        &self,
+            &self,
-        options: &LeptosOptions,
+            options: &LeptosOptions,
-        app_fn: impl Fn() -> IV + Send + 'static + Clone,
+            app_fn: impl Fn() -> IV + Send + 'static + Clone,
-        additional_context: impl Fn() + Send + 'static + Clone,
+            additional_context: impl Fn() + Send + 'static + Clone,
-        params: &StaticParamsMap,
+            params: &StaticParamsMap,
-    ) -> Result<bool, std::io::Error>
+        ) -> Result<bool, std::io::Error>
-    where
+        where
-        IV: IntoView + 'static,
+            IV: IntoView + 'static,
-    {
+        {
-        match self.static_mode {
+            match self.mode {
-            None => Ok(false),
+                SsrMode::Static(route) => {
-            Some(_) => {
+                    let mut path = StaticPath::new(self.path.clone());
-                let mut path = StaticPath::new(&self.leptos_path);
+                    for path in path.into_paths(params) {
-                path.add_params(params);
+                        /*path.write(
-                for path in path.into_paths() {
+                            options,
-                    path.write(
+                            app_fn.clone(),
-                        options,
+                            additional_context.clone(),
-                        app_fn.clone(),
+                        )
-                        additional_context.clone(),
+                        .await?;*/ println!()
-                    )
+                    }
-                    .await?;
+                    Ok(true)
                 }
-                Ok(true)
+                _ => Ok(false),
             }
         }
-    }*/
+    */
 }
 
-#[derive(Debug, Default)]
+#[derive(Debug, Default, Clone)]
 pub struct RouteList(Vec<RouteListing>);
 
 impl From<Vec<RouteListing>> for RouteList {
@@ -124,6 +171,45 @@ impl RouteList {
     pub fn into_inner(self) -> Vec<RouteListing> {
         self.0
     }
+
+    pub fn iter(&self) -> impl Iterator<Item = &RouteListing> {
+        self.0.iter()
+    }
+
+    pub async fn into_static_paths(self) -> Vec<ResolvedStaticPath> {
+        futures::future::join_all(
+            self.into_inner()
+                .into_iter()
+                .map(|route_listing| route_listing.into_static_paths()),
+        )
+        .await
+        .into_iter()
+        .flatten()
+        .flatten()
+        .collect::<Vec<_>>()
+    }
+
+    pub async fn generate_static_files<Fut, WriterFut>(
+        self,
+        render_fn: impl Fn(&ResolvedStaticPath) -> Fut + Send + Clone + 'static,
+        writer: impl Fn(&ResolvedStaticPath, &Owner, String) -> WriterFut
+            + Send
+            + Clone
+            + 'static,
+        was_404: impl Fn(&Owner) -> bool + Send + Clone + 'static,
+    ) where
+        Fut: Future<Output = (Owner, String)> + Send + 'static,
+        WriterFut: Future<Output = Result<(), std::io::Error>> + Send + 'static,
+    {
+        join_all(self.into_inner().into_iter().map(|route| {
+            route.generate_static_files(
+                render_fn.clone(),
+                writer.clone(),
+                was_404.clone(),
+            )
+        }))
+        .await;
+    }
 }
 
 impl RouteList {

router/src/hooks.rs

@@ -155,8 +155,10 @@ pub fn use_location() -> Location {
     location
 }
 
+pub(crate) type RawParamsMap = ArcMemo<ParamsMap>;
+
 #[track_caller]
-fn use_params_raw() -> ArcMemo<ParamsMap> {
+fn use_params_raw() -> RawParamsMap {
     use_context().expect(
         "Tried to access params outside the context of a matched <Route>.",
     )

router/src/lib.rs

@@ -16,7 +16,7 @@ pub mod nested_router;
 pub mod params;
 //mod router;
 mod ssr_mode;
-mod static_route;
+pub mod static_routes;
 
 pub use generate_route_list::*;
 #[doc(inline)]
@@ -26,4 +26,3 @@ pub use method::*;
 pub use navigate::*;
 //pub use router::*;
 pub use ssr_mode::*;
-pub use static_route::*;

router/src/location/mod.rs

@@ -201,10 +201,29 @@ where
     }
 }
 
+#[cfg(feature = "ssr")]
 pub(crate) fn unescape(s: &str) -> String {
+    percent_encoding::percent_decode_str(s)
+        .decode_utf8()
+        .unwrap()
+        .to_string()
+}
+
+#[cfg(not(feature = "ssr"))]
+pub(crate) fn unescape(s: &str) -> String {
+    js_sys::decode_uri_component(s).unwrap().into()
+}
+
+#[cfg(not(feature = "ssr"))]
+pub(crate) fn unescape_minimal(s: &str) -> String {
     js_sys::decode_uri(s).unwrap().into()
 }
 
+#[cfg(feature = "ssr")]
+pub(crate) fn unescape_minimal(s: &str) -> String {
+    unescape(s)
+}
+
 pub(crate) fn handle_anchor_click<NavFn, NavFut>(
     router_base: Option<Cow<'static, str>>,
     parse_with_base: fn(&str, &str) -> Result<Url, JsValue>,
@@ -259,7 +278,7 @@ where
             }
 
             let url = parse_with_base(href.as_str(), &origin).unwrap();
-            let path_name = unescape(&url.path);
+            let path_name = unescape_minimal(&url.path);
 
             // let browser handle this event if it leaves our domain
             // or our base path

router/src/matching/mod.rs

@@ -6,10 +6,10 @@ pub use path_segment::*;
 mod horizontal;
 mod nested;
 mod vertical;
-use crate::SsrMode;
+use crate::{static_routes::RegenerationFn, Method, SsrMode};
 pub use horizontal::*;
 pub use nested::*;
-use std::{borrow::Cow, marker::PhantomData};
+use std::{borrow::Cow, collections::HashSet, marker::PhantomData};
 use tachys::{
     renderer::Renderer,
     view::{Render, RenderHtml},
@@ -145,6 +145,8 @@ where
 pub struct GeneratedRouteData {
     pub segments: Vec<PathSegment>,
     pub ssr_mode: SsrMode,
+    pub methods: HashSet<Method>,
+    pub regenerate: Vec<RegenerationFn>,
 }
 
 #[cfg(test)]

router/src/matching/nested/mod.rs

@@ -2,11 +2,12 @@ use super::{
     MatchInterface, MatchNestedRoutes, PartialPathMatch, PathSegment,
     PossibleRouteMatch, RouteMatchId,
 };
-use crate::{ChooseView, GeneratedRouteData, MatchParams, SsrMode};
+use crate::{ChooseView, GeneratedRouteData, MatchParams, Method, SsrMode};
 use core::{fmt, iter};
 use either_of::Either;
 use std::{
     borrow::Cow,
+    collections::HashSet,
     marker::PhantomData,
     sync::atomic::{AtomicU16, Ordering},
 };
@@ -19,7 +20,7 @@ mod tuples;
 
 static ROUTE_ID: AtomicU16 = AtomicU16::new(1);
 
-#[derive(Debug, Copy, PartialEq, Eq)]
+#[derive(Debug, PartialEq, Eq)]
 pub struct NestedRoute<Segments, Children, Data, View, R> {
     id: u16,
     segments: Segments,
@@ -27,6 +28,7 @@ pub struct NestedRoute<Segments, Children, Data, View, R> {
     data: Data,
     view: View,
     rndr: PhantomData<R>,
+    methods: HashSet<Method>,
     ssr_mode: SsrMode,
 }
 
@@ -46,7 +48,8 @@ where
             data: self.data.clone(),
             view: self.view.clone(),
             rndr: PhantomData,
-            ssr_mode: self.ssr_mode,
+            methods: self.methods.clone(),
+            ssr_mode: self.ssr_mode.clone(),
         }
     }
 }
@@ -64,6 +67,7 @@ impl<Segments, View, R> NestedRoute<Segments, (), (), View, R> {
             data: (),
             view,
             rndr: PhantomData,
+            methods: [Method::Get].into(),
             ssr_mode: Default::default(),
         }
     }
@@ -81,6 +85,7 @@ impl<Segments, Data, View, R> NestedRoute<Segments, (), Data, View, R> {
             view,
             rndr,
             ssr_mode,
+            methods,
             ..
         } = self;
         NestedRoute {
@@ -90,6 +95,7 @@ impl<Segments, Data, View, R> NestedRoute<Segments, (), Data, View, R> {
             data,
             view,
             ssr_mode,
+            methods,
             rndr,
         }
     }
@@ -249,25 +255,44 @@ where
         let mut segment_routes = Vec::new();
         self.segments.generate_path(&mut segment_routes);
         let children = self.children.as_ref();
-        let ssr_mode = self.ssr_mode;
+        let ssr_mode = self.ssr_mode.clone();
+        let methods = self.methods.clone();
+        let regenerate = match &ssr_mode {
+            SsrMode::Static(data) => match data.regenerate.as_ref() {
+                None => vec![],
+                Some(regenerate) => vec![regenerate.clone()]
+            }
+            _ => vec![]
+        };
 
         match children {
             None => Either::Left(iter::once(GeneratedRouteData {
                 segments: segment_routes,
-                ssr_mode
+                ssr_mode,
+                methods,
+                regenerate
             })),
             Some(children) => {
                 Either::Right(children.generate_routes().into_iter().map(move |child| {
+                    // extend this route's segments with child segments
                     let segments = segment_routes.clone().into_iter().chain(child.segments).collect();
+
+                    let mut methods = methods.clone();
+                    methods.extend(child.methods);
+
+                    let mut regenerate = regenerate.clone();
+                    regenerate.extend(child.regenerate);
+
                     if child.ssr_mode > ssr_mode {
                         GeneratedRouteData {
                             segments,
                             ssr_mode: child.ssr_mode,
+                            methods, regenerate
                         }
                     } else {
                         GeneratedRouteData {
                             segments,
-                            ssr_mode,
+                            ssr_mode: ssr_mode.clone(), methods, regenerate
                         }
                     }
                 }))

router/src/nested_router.rs

@@ -3,8 +3,8 @@ use crate::{
     location::{LocationProvider, Url},
     matching::Routes,
     params::ParamsMap,
-    ChooseView, MatchInterface, MatchNestedRoutes, MatchParams, Method,
+    ChooseView, MatchInterface, MatchNestedRoutes, MatchParams, PathSegment,
-    PathSegment, RouteList, RouteListing, RouteMatchId,
+    RouteList, RouteListing, RouteMatchId,
 };
 use any_spawner::Executor;
 use either_of::{Either, EitherOf3};
@@ -272,10 +272,8 @@ where
                     RouteListing::new(
                         path,
                         data.ssr_mode,
-                        // TODO methods
+                        data.methods,
-                        [Method::Get],
+                        data.regenerate,
-                        // TODO static data
-                        None,
                     )
                 })
                 .collect::<Vec<_>>();

router/src/ssr_mode.rs

@@ -1,3 +1,5 @@
+use crate::static_routes::StaticRoute;
+
 /// Indicates which rendering mode should be used for this route during server-side rendering.
 ///
 /// Leptos supports the following ways of rendering HTML that contains `async` data loaded
@@ -18,15 +20,17 @@
 /// 5. **`Async`**: Load all resources on the server. Wait until all data are loaded, and render HTML in one sweep.
 ///     - *Pros*: Better handling for meta tags (because you know async data even before you render the `<head>`). Faster complete load than **synchronous** because async resources begin loading on server.
 ///     - *Cons*: Slower load time/TTFB: you need to wait for all async resources to load before displaying anything on the client.
+/// 6. **`Static`**:
 ///
 /// The mode defaults to out-of-order streaming. For a path that includes multiple nested routes, the most
 /// restrictive mode will be used: i.e., if even a single nested route asks for `Async` rendering, the whole initial
 /// request will be rendered `Async`. (`Async` is the most restricted requirement, followed by `InOrder`, `PartiallyBlocked`, and `OutOfOrder`.)
-#[derive(Default, Copy, Clone, Debug, PartialEq, Eq, Hash, PartialOrd, Ord)]
+#[derive(Default, Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
 pub enum SsrMode {
     #[default]
     OutOfOrder,
     PartiallyBlocked,
     InOrder,
     Async,
+    Static(StaticRoute),
 }

router/src/static_route.rs

@@ -1,21 +0,0 @@
-/// The mode to use when rendering the route statically.
-/// On mode `Upfront`, the route will be built with the server is started using the provided static
-/// data. On mode `Incremental`, the route will be built on the first request to it and then cached
-/// and returned statically for subsequent requests.
-#[derive(Default, Copy, Clone, Debug, PartialEq, Eq, Hash, PartialOrd, Ord)]
-pub enum StaticMode {
-    #[default]
-    Upfront,
-    Incremental,
-}
-
-// TODO
-#[derive(Debug, Clone)]
-pub struct StaticDataMap;
-
-impl StaticDataMap {
-    #[allow(clippy::new_without_default)] // TODO
-    pub fn new() -> Self {
-        Self
-    }
-}

router/src/static_routes.rs

@@ -0,0 +1,363 @@
+use crate::{hooks::RawParamsMap, params::ParamsMap, PathSegment};
+use futures::{channel::oneshot, stream, Stream, StreamExt};
+use leptos::spawn::spawn;
+use reactive_graph::{owner::Owner, traits::GetUntracked};
+use std::{
+    fmt::{Debug, Display},
+    future::Future,
+    ops::Deref,
+    pin::Pin,
+    sync::Arc,
+};
+
+type PinnedFuture<T> = Pin<Box<dyn Future<Output = T> + Send>>;
+type PinnedStream<T> = Pin<Box<dyn Stream<Item = T> + Send>>;
+
+pub type StaticParams = Arc<StaticParamsFn>;
+pub type StaticParamsFn =
+    dyn Fn() -> PinnedFuture<StaticParamsMap> + Send + Sync + 'static;
+
+#[derive(Clone)]
+#[allow(clippy::type_complexity)]
+pub struct RegenerationFn(
+    Arc<dyn Fn(&ParamsMap) -> PinnedStream<()> + Send + Sync>,
+);
+
+impl Debug for RegenerationFn {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_struct("RegenerationFn").finish_non_exhaustive()
+    }
+}
+
+impl Deref for RegenerationFn {
+    type Target = dyn Fn(&ParamsMap) -> PinnedStream<()> + Send + Sync;
+
+    fn deref(&self) -> &Self::Target {
+        &*self.0
+    }
+}
+
+impl PartialEq for RegenerationFn {
+    fn eq(&self, other: &Self) -> bool {
+        Arc::ptr_eq(&self.0, &other.0)
+    }
+}
+
+#[derive(Clone, Default)]
+pub struct StaticRoute {
+    pub(crate) prerender_params: Option<StaticParams>,
+    pub(crate) regenerate: Option<RegenerationFn>,
+}
+
+impl StaticRoute {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    pub fn prerender_params<Fut>(
+        mut self,
+        params: impl Fn() -> Fut + Send + Sync + 'static,
+    ) -> Self
+    where
+        Fut: Future<Output = StaticParamsMap> + Send + 'static,
+    {
+        self.prerender_params = Some(Arc::new(move || Box::pin(params())));
+        self
+    }
+
+    pub fn regenerate<St>(
+        mut self,
+        invalidate: impl Fn(&ParamsMap) -> St + Send + Sync + 'static,
+    ) -> Self
+    where
+        St: Stream<Item = ()> + Send + 'static,
+    {
+        self.regenerate = Some(RegenerationFn(Arc::new(move |params| {
+            Box::pin(invalidate(params))
+        })));
+        self
+    }
+
+    pub async fn to_prerendered_params(&self) -> Option<StaticParamsMap> {
+        match &self.prerender_params {
+            None => None,
+            Some(params) => Some(params().await),
+        }
+    }
+}
+
+impl Debug for StaticRoute {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_struct("StaticRoute").finish_non_exhaustive()
+    }
+}
+
+impl PartialOrd for StaticRoute {
+    fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
+impl Ord for StaticRoute {
+    fn cmp(&self, _other: &Self) -> std::cmp::Ordering {
+        std::cmp::Ordering::Equal
+    }
+}
+
+impl PartialEq for StaticRoute {
+    fn eq(&self, other: &Self) -> bool {
+        let prerender = match (&self.prerender_params, &other.prerender_params)
+        {
+            (None, None) => true,
+            (None, Some(_)) | (Some(_), None) => false,
+            (Some(this), Some(that)) => Arc::ptr_eq(this, that),
+        };
+        prerender && (self.regenerate == other.regenerate)
+    }
+}
+
+impl Eq for StaticRoute {}
+
+#[derive(Debug, Clone, Default)]
+pub struct StaticParamsMap(pub Vec<(String, Vec<String>)>);
+
+impl StaticParamsMap {
+    /// Create a new empty `StaticParamsMap`.
+    #[inline]
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    /// Insert a value into the map.
+    #[inline]
+    pub fn insert(&mut self, key: impl ToString, value: Vec<String>) {
+        let key = key.to_string();
+        for item in self.0.iter_mut() {
+            if item.0 == key {
+                item.1 = value;
+                return;
+            }
+        }
+        self.0.push((key, value));
+    }
+
+    /// Get a value from the map.
+    #[inline]
+    pub fn get(&self, key: &str) -> Option<&Vec<String>> {
+        self.0
+            .iter()
+            .find_map(|entry| (entry.0 == key).then_some(&entry.1))
+    }
+}
+
+impl IntoIterator for StaticParamsMap {
+    type Item = (String, Vec<String>);
+    type IntoIter = StaticParamsIter;
+
+    fn into_iter(self) -> Self::IntoIter {
+        StaticParamsIter(self.0.into_iter())
+    }
+}
+
+#[derive(Debug)]
+pub struct StaticParamsIter(
+    <Vec<(String, Vec<String>)> as IntoIterator>::IntoIter,
+);
+
+impl Iterator for StaticParamsIter {
+    type Item = (String, Vec<String>);
+
+    fn next(&mut self) -> Option<Self::Item> {
+        self.0.next()
+    }
+}
+
+impl<A> FromIterator<A> for StaticParamsMap
+where
+    A: Into<(String, Vec<String>)>,
+{
+    fn from_iter<T: IntoIterator<Item = A>>(iter: T) -> Self {
+        Self(iter.into_iter().map(Into::into).collect())
+    }
+}
+
+#[doc(hidden)]
+#[derive(Debug)]
+pub struct StaticPath {
+    segments: Vec<PathSegment>,
+}
+
+impl StaticPath {
+    pub fn new(segments: Vec<PathSegment>) -> StaticPath {
+        Self { segments }
+    }
+
+    pub fn into_paths(
+        self,
+        params: Option<StaticParamsMap>,
+    ) -> Vec<ResolvedStaticPath> {
+        use PathSegment::*;
+        let mut paths = vec![ResolvedStaticPath {
+            path: String::new(),
+        }];
+
+        for segment in &self.segments {
+            match segment {
+                Unit => {}
+                Static(s) => {
+                    paths = paths
+                        .into_iter()
+                        .map(|p| {
+                            if s.starts_with("/") {
+                                ResolvedStaticPath {
+                                    path: format!("{}{s}", p.path),
+                                }
+                            } else {
+                                ResolvedStaticPath {
+                                    path: format!("{}/{s}", p.path),
+                                }
+                            }
+                        })
+                        .collect::<Vec<_>>();
+                }
+                Param(name) | Splat(name) => {
+                    let mut new_paths = vec![];
+                    if let Some(params) = params.as_ref() {
+                        for path in paths {
+                            if let Some(params) = params.get(name) {
+                                for val in params.iter() {
+                                    new_paths.push(if val.starts_with("/") {
+                                        ResolvedStaticPath {
+                                            path: format!(
+                                                "{}{}",
+                                                path.path, val
+                                            ),
+                                        }
+                                    } else {
+                                        ResolvedStaticPath {
+                                            path: format!(
+                                                "{}/{}",
+                                                path.path, val
+                                            ),
+                                        }
+                                    });
+                                }
+                            }
+                        }
+                    }
+                    paths = new_paths;
+                }
+            }
+        }
+        paths
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct ResolvedStaticPath {
+    pub(crate) path: String,
+}
+
+impl ResolvedStaticPath {
+    pub fn new(path: impl Into<String>) -> Self {
+        Self { path: path.into() }
+    }
+}
+
+impl AsRef<str> for ResolvedStaticPath {
+    fn as_ref(&self) -> &str {
+        self.path.as_ref()
+    }
+}
+
+impl Display for ResolvedStaticPath {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        Display::fmt(&self.path, f)
+    }
+}
+
+impl ResolvedStaticPath {
+    pub async fn build<Fut, WriterFut>(
+        self,
+        render_fn: impl Fn(&ResolvedStaticPath) -> Fut + Send + Clone + 'static,
+        writer: impl Fn(&ResolvedStaticPath, &Owner, String) -> WriterFut
+            + Send
+            + Clone
+            + 'static,
+        was_404: impl Fn(&Owner) -> bool + Send + Clone + 'static,
+        regenerate: Vec<RegenerationFn>,
+    ) -> (Owner, Option<String>)
+    where
+        Fut: Future<Output = (Owner, String)> + Send + 'static,
+        WriterFut: Future<Output = Result<(), std::io::Error>> + Send + 'static,
+    {
+        let (tx, rx) = oneshot::channel();
+
+        // spawns a separate task for each path it's rendering
+        // this allows us to parallelize all static site rendering,
+        // and also to create long-lived tasks
+        spawn({
+            let render_fn = render_fn.clone();
+            let writer = writer.clone();
+            let was_error = was_404.clone();
+            async move {
+                // render and write the initial page
+                let (owner, html) = render_fn(&self).await;
+
+                // if rendering this page resulted in an error (404, 500, etc.)
+                // then we should not cache it: the `was_error` function can handle notifying
+                // the user that there was an error, and the server can give a dynamic response
+                // that will include the 404 or 500
+                if was_error(&owner) {
+                    // can ignore errors from channel here, because it just means we're not
+                    // awaiting the Future
+                    _ = tx.send((owner.clone(), Some(html)));
+                } else {
+                    _ = tx.send((owner.clone(), None));
+                    if let Err(e) = writer(&self, &owner, html).await {
+                        #[cfg(feature = "tracing")]
+                        tracing::warn!("{e}");
+
+                        #[cfg(not(feature = "tracing"))]
+                        eprintln!("{e}");
+                    }
+                }
+
+                // if there's a regeneration function, keep looping
+                let params = if regenerate.is_empty() {
+                    None
+                } else {
+                    Some(
+                        owner
+                            .use_context_bidirectional::<RawParamsMap>()
+                            .expect(
+                                "using static routing, but couldn't find \
+                                 ParamsMap",
+                            )
+                            .get_untracked(),
+                    )
+                };
+                let mut regenerate = stream::select_all(
+                    regenerate
+                        .into_iter()
+                        .map(|r| owner.with(|| r(params.as_ref().unwrap()))),
+                );
+                while regenerate.next().await.is_some() {
+                    let (owner, html) = render_fn(&self).await;
+                    if !was_error(&owner) {
+                        if let Err(e) = writer(&self, &owner, html).await {
+                            #[cfg(feature = "tracing")]
+                            tracing::warn!("{e}");
+
+                            #[cfg(not(feature = "tracing"))]
+                            eprintln!("{e}");
+                        }
+                    }
+                    drop(owner);
+                }
+            }
+        });
+
+        rx.await.unwrap()
+    }
+}

router_macro/src/lib.rs

@@ -75,6 +75,9 @@ impl SegmentParser {
                         lit.trim_start_matches(['"', '/'])
                             .trim_end_matches(['"', '/']),
                     );
+                    if lit.ends_with(r#"/""#) && lit != r#""/""# {
+                        self.segments.push(Segment::Static("/".to_string()));
+                    }
                 }
                 TokenTree::Group(_) => unimplemented!(),
                 TokenTree::Ident(_) => unimplemented!(),
@@ -102,13 +105,14 @@ impl SegmentParser {
 
 impl Segment {
     fn is_valid(segment: &str) -> bool {
-        segment.chars().all(|c| {
+        segment == "/"
-            c.is_ascii_digit()
+            || segment.chars().all(|c| {
-                || c.is_ascii_lowercase()
+                c.is_ascii_digit()
-                || c.is_ascii_uppercase()
+                    || c.is_ascii_lowercase()
-                || RFC3986_UNRESERVED.contains(&c)
+                    || c.is_ascii_uppercase()
-                || RFC3986_PCHAR_OTHER.contains(&c)
+                    || RFC3986_UNRESERVED.contains(&c)
-        })
+                    || RFC3986_PCHAR_OTHER.contains(&c)
+            })
     }
 
     fn ensure_valid(&self) {

router_macro/tests/path.rs

@@ -64,14 +64,14 @@ fn parses_no_slashes() {
 
 #[test]
 fn parses_no_leading_slash() {
-    let output = path!("home/");
+    let output = path!("home");
     assert_eq!(output, (StaticSegment("home"),));
 }
 
 #[test]
 fn parses_trailing_slash() {
     let output = path!("/home/");
-    assert_eq!(output, (StaticSegment("home"),));
+    assert_eq!(output, (StaticSegment("home"), StaticSegment("/")));
 }
 
 #[test]
@@ -105,6 +105,19 @@ fn parses_mixed_segment_types() {
     );
 }
 
+#[test]
+fn parses_trailing_slash_after_param() {
+    let output = path!("/foo/:bar/");
+    assert_eq!(
+        output,
+        (
+            StaticSegment("foo"),
+            ParamSegment("bar"),
+            StaticSegment("/")
+        )
+    );
+}
+
 #[test]
 fn parses_consecutive_static() {
     let output = path!("/foo/bar/baz");