dioxus/docs/guide/examples/server_context_state.rs
2023-07-07 18:39:18 -07:00

134 lines
5.4 KiB
Rust

#![allow(non_snake_case, unused)]
use dioxus::prelude::*;
use dioxus_fullstack::prelude::*;
#[cfg(feature = "ssr")]
#[derive(Default, Clone)]
struct ServerFunctionState {
call_count: std::sync::Arc<std::sync::atomic::AtomicUsize>,
}
fn main() {
#[cfg(feature = "web")]
dioxus_web::launch_with_props(
app,
// Get the root props from the document
get_root_props_from_document().unwrap_or_default(),
dioxus_web::Config::new().hydrate(true),
);
#[cfg(feature = "ssr")]
{
use axum::body::Body;
use axum::extract::Path;
use axum::extract::State;
use axum::http::Request;
use axum::routing::get;
use std::sync::Arc;
tokio::runtime::Runtime::new()
.unwrap()
.block_on(async move {
let addr = std::net::SocketAddr::from(([127, 0, 0, 1], 8080));
axum::Server::bind(&addr)
.serve(
axum::Router::new()
// Serve the dist folder with the static javascript and WASM files created by the dixous CLI
.serve_static_assets("./dist")
// Register server functions
.register_server_fns_with_handler("", |func| {
move |State(server_fn_state): State<ServerFunctionState>, req: Request<Body>| async move {
let (parts, body) = req.into_parts();
let parts: Arc<RequestParts> = Arc::new(parts.into());
let mut server_context = DioxusServerContext::new(parts.clone());
server_context.insert(server_fn_state);
server_fn_handler(server_context, func.clone(), parts, body).await
}
})
.with_state(ServerFunctionState::default())
// Connect to the hot reload server in debug mode
.connect_hot_reload()
// Render the application. This will serialize the root props (the intial count) into the HTML
.route(
"/",
get(move |State(ssr_state): State<SSRState>| async move { axum::body::Full::from(
ssr_state.render(
&ServeConfigBuilder::new(
app,
0,
)
.build(),
)
)}),
)
// Render the application with a different intial count
.route(
"/:initial_count",
get(move |Path(intial_count): Path<usize>, State(ssr_state): State<SSRState>| async move { axum::body::Full::from(
ssr_state.render(
&ServeConfigBuilder::new(
app,
intial_count,
)
.build(),
)
)}),
)
.with_state(SSRState::default())
.into_make_service(),
)
.await
.unwrap();
});
}
}
fn app(cx: Scope<usize>) -> Element {
let mut count = use_state(cx, || *cx.props);
cx.render(rsx! {
h1 { "High-Five counter: {count}" }
button { onclick: move |_| count += 1, "Up high!" }
button { onclick: move |_| count -= 1, "Down low!" }
button {
onclick: move |_| {
to_owned![count];
async move {
// Call the server function just like a local async function
if let Ok(new_count) = double_server(*count.current()).await {
count.set(new_count);
}
}
},
"Double"
}
})
}
// We use the "getcbor" encoding to make caching easier
#[server(DoubleServer, "", "getcbor")]
async fn double_server(number: usize) -> Result<usize, ServerFnError> {
// Perform some expensive computation or access a database on the server
tokio::time::sleep(std::time::Duration::from_secs(1)).await;
let result = number * 2;
let cx = server_context();
println!(
"User Agent {:?}",
cx.request_parts().headers.get("User-Agent")
);
// Set the cache control header to 1 hour on the post request
cx.response_headers_mut()
.insert("Cache-Control", "max-age=3600".parse().unwrap());
// Get the server function state
let server_fn_state = cx.get::<ServerFunctionState>().unwrap();
let call_count = server_fn_state
.call_count
.fetch_add(1, std::sync::atomic::Ordering::SeqCst);
println!("server functions have been called {call_count} times");
println!("server calculated {result}");
Ok(result)
}