1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
use std::convert::Infallible;
use hyper::service::{service_fn, make_service_fn};
use hyper::{Method, Server, StatusCode, Body};
use hyper::http::request::Parts;
use hyper::http::response::Builder;
use serde::Deserialize;
use sputnik::{html_escape, mime, request::SputnikParts, response::SputnikBuilder};
use sputnik::hyper_body::{SputnikBody, FormError};
type Response = hyper::Response<Body>;
#[derive(thiserror::Error, Debug)]
enum Error {
#[error("page not found")]
NotFound(String),
#[error("{0}")]
FormError(#[from] FormError)
}
fn render_error(err: Error) -> (StatusCode, String) {
match err {
Error::NotFound(msg) => (StatusCode::NOT_FOUND, msg),
Error::FormError(err) => (StatusCode::BAD_REQUEST, err.to_string()),
}
}
async fn route(req: &mut Parts, body: Body) -> Result<Response, Error> {
match (&req.method, req.uri.path()) {
(&Method::GET, "/form") => Ok(get_form(req)),
(&Method::POST, "/form") => post_form(req, body).await,
_ => return Err(Error::NotFound("page not found".to_owned()))
}
}
fn get_form(_req: &mut Parts) -> Response {
Builder::new()
.content_type(mime::TEXT_HTML)
.body(
"<form method=post><input name=text> <button>Submit</button></form>".into()
).unwrap()
}
#[derive(Deserialize)]
struct FormData {text: String}
async fn post_form(_req: &mut Parts, body: Body) -> Result<Response, Error> {
let msg: FormData = body.into_form().await?;
Ok(Builder::new().content_type(mime::TEXT_HTML).body(
format!("hello <em>{}</em>", html_escape(msg.text)).into()
).unwrap())
}
async fn service(req: hyper::Request<hyper::Body>) -> Result<hyper::Response<hyper::Body>, Infallible> {
let (mut parts, body) = req.into_parts();
match route(&mut parts, body).await {
Ok(mut res) => {
for (k,v) in parts.response_headers().iter() {
res.headers_mut().append(k, v.clone());
}
Ok(res)
}
Err(err) => {
let (code, message) = render_error(err);
// you can easily wrap or log errors here
Ok(hyper::Response::builder().status(code).body(message.into()).unwrap())
}
}
}
#[tokio::main]
async fn main() {
let service = make_service_fn(move |_| {
async move {
Ok::<_, hyper::Error>(service_fn(move |req| {
service(req)
}))
}
});
let addr = ([127, 0, 0, 1], 8000).into();
let server = Server::bind(&addr).serve(service);
println!("Listening on http://{}", addr);
server.await;
}
|
