re_web_server 0.2.0

Serves the Rerun web viewer (Wasm and HTML) over HTTP
Documentation 
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
85
86
87
88
89
90
91
92

//! Serves the web viewer wasm/html.
//!
//! ## Feature flags
#![doc = document_features::document_features!()]
//!

#![forbid(unsafe_code)]
#![warn(clippy::all, rust_2018_idioms)]
#![allow(clippy::manual_range_contains)]

use std::task::{Context, Poll};

use futures_util::future;
use hyper::{server::conn::AddrIncoming, service::Service};
use hyper::{Body, Request, Response};

#[derive(Debug)]
struct Svc;

impl Service<Request<Body>> for Svc {
    type Response = Response<Body>;
    type Error = hyper::Error;
    type Future = future::Ready<Result<Self::Response, Self::Error>>;

    fn poll_ready(&mut self, _cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
        Ok(()).into()
    }

    #[cfg(feature = "__ci")]
    fn call(&mut self, _req: Request<Body>) -> Self::Future {
        panic!("web_server compiled with '__ci' feature (or `--all-features`). DON'T DO THAT! It's only for the CI!");
    }

    #[cfg(not(feature = "__ci"))]
    fn call(&mut self, req: Request<Body>) -> Self::Future {
        let rsp = Response::builder();

        let bytes = match req.uri().path() {
            "/" | "/index.html" => &include_bytes!("../web_viewer/index.html")[..],
            "/favicon.ico" => &include_bytes!("../web_viewer/favicon.ico")[..],
            "/sw.js" => &include_bytes!("../web_viewer/sw.js")[..],
            "/re_viewer_bg.wasm" => &include_bytes!("../web_viewer/re_viewer_bg.wasm")[..],
            "/re_viewer.js" => &include_bytes!("../web_viewer/re_viewer.js")[..],
            _ => {
                re_log::warn!("404 path: {}", req.uri().path());
                let body = Body::from(Vec::new());
                let rsp = rsp.status(404).body(body).unwrap();
                return future::ok(rsp);
            }
        };

        let body = Body::from(Vec::from(bytes));
        let rsp = rsp.status(200).body(body).unwrap();
        future::ok(rsp)
    }
}

struct MakeSvc;

impl<T> Service<T> for MakeSvc {
    type Response = Svc;
    type Error = std::io::Error;
    type Future = future::Ready<Result<Self::Response, Self::Error>>;

    fn poll_ready(&mut self, _cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
        Ok(()).into()
    }

    fn call(&mut self, _: T) -> Self::Future {
        future::ok(Svc)
    }
}

// ----------------------------------------------------------------------------

/// Hosts the Web Viewer Wasm+HTML
pub struct WebServer {
    server: hyper::Server<AddrIncoming, MakeSvc>,
}

impl WebServer {
    pub fn new(port: u16) -> Self {
        let bind_addr = format!("0.0.0.0:{port}").parse().unwrap();
        let server = hyper::Server::bind(&bind_addr).serve(MakeSvc);
        Self { server }
    }

    pub async fn serve(self) -> anyhow::Result<()> {
        self.server.await?;
        Ok(())
    }
}