atelier/shelves/backend/main.rs
2025-02-02 15:17:50 -05:00

108 lines
2.2 KiB
Rust

use std::net::SocketAddr;
use axum::handler::HandlerWithoutStateExt;
use axum::response::IntoResponse;
use std::error::Error;
use tokio::net::TcpListener;
pub type AnyError = Box<dyn Error + Send + Sync + 'static>;
pub type Result<T> = core::result::Result<T, AnyError>;
pub type Dbs = atelier::rusqlite_thread_pool::PoolSender;
fn migrate(connection: &mut rusqlite::Connection) -> Result<()> {
Ok(())
}
fn init(connection: &mut rusqlite::Connection) -> rusqlite::Result<()> {
Ok(())
}
type Request = axum::extract::Request;
type Response = axum::response::Response;
type Handler = Box<dyn FnMut(Request) -> Box<dyn Future<Output = Response>>>;
type Router = atelier::router::Router<Handler>;
fn make_handler<Fut, F>(f: F) -> Handler
where
Fut: Future<Output = Response>,
F: FnMut(Request) -> Fut + Clone + 'static,
{
Box::new(move |req| {
let mut f = f.clone();
Box::new(async move { f(req).await })
})
}
async fn get_hello(req: Request) -> Response {
"hello".into_response()
}
fn make_router() -> Router {
let mut router = atelier::router::Router::new();
macro_rules! r {
($m:expr, $p:expr, $h:expr) => {
router.register($m, $p, make_handler($h))
};
}
r!("get", "/hello", get_hello);
router
}
async fn serve(
dbs: Dbs,
router: &Router,
req: axum::extract::Request,
) -> axum::response::Response {
let method = req.method().as_str();
let uri = format!("{}", req.uri());
let handler = match router.get(method, uri) {
(Some(h), _) => h,
(None, Some(sc)) => {
return (http::status::StatusCode::from_u16(sc).unwrap(), "")
.into_response()
},
};
handler(req).await
}
async fn go() -> Result<()> {
let mut conn = rusqlite::Connection::open("./shelves.db")?;
migrate(&mut conn)?;
let (tx, _, _) =
atelier::rusqlite_thread_pool::spawn_threadpool_supervised(
4,
"./shelves.db",
|conn| init(conn),
)?;
let addr = "127.0.0.1:8333".parse::<SocketAddr>()?;
let listener = TcpListener::bind(addr).await?;
let router = make_router();
let serve = move |req| {
let tx = tx.clone();
serve(tx, router, req)
};
axum::serve(listener, serve.into_make_service()).await?;
Ok(())
}
fn main() {
let rt = tokio::runtime::Builder::new_multi_thread()
.enable_all()
.build()
.unwrap();
rt.block_on(go()).unwrap();
}