104 lines
2.0 KiB
Rust
104 lines
2.0 KiB
Rust
use std::{
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collections::*,
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error::Error,
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};
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use std::convert::{Infallible};
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use std::io::Write;
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use std::net::SocketAddr;
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use std::path::Path;
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use std::str::FromStr;
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use std::sync::{
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Arc
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};
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use std::time::{Duration, Instant};
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use futures::channel::oneshot;
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use hyper::{Body, Request, Response, Server, StatusCode};
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use hyper::service::{make_service_fn, service_fn};
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use tokio::{
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sync::Mutex,
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time::delay_for,
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};
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mod watcher;
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use watcher::Watchers;
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#[derive (Clone)]
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enum Message {
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Meow,
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}
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#[derive (Default)]
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struct ServerState {
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watchers: Arc <Mutex <Watchers <Message>>>,
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}
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fn status_reply <B: Into <Body>> (status: StatusCode, b: B)
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-> Response <Body>
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{
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Response::builder ().status (status).body (b.into ()).unwrap ()
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}
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async fn handle_watch (state: Arc <ServerState>)
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-> Response <Body>
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{
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match Watchers::long_poll (state.watchers.clone ()).await {
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None => status_reply (StatusCode::OK, "no\n"),
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Some (_) => status_reply (StatusCode::OK, "actually, yes\n"),
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}
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}
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async fn handle_wake (state: Arc <ServerState>)
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-> Response <Body>
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{
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let mut watchers = state.watchers.lock ().await;
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watchers.wake_all (Message::Meow);
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status_reply (StatusCode::OK, "ok\n")
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}
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async fn handle_all (req: Request <Body>, state: Arc <ServerState>)
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-> Result <Response <Body>, Infallible>
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{
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let uri = req.uri ();
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println! ("{}", uri);
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if uri == "/watch" {
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Ok (handle_watch (state).await)
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}
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else if uri == "/wake" {
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Ok (handle_wake (state).await)
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}
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else {
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Ok (status_reply (StatusCode::OK, "Hi\n"))
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}
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}
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#[tokio::main]
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async fn main () -> Result <(), Box <dyn Error>> {
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let addr = SocketAddr::from(([0, 0, 0, 0], 4000));
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let state = Arc::new (ServerState::default ());
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let make_svc = make_service_fn (|_conn| {
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let state = state.clone ();
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async {
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Ok::<_, Infallible> (service_fn (move |req| {
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let state = state.clone ();
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handle_all (req, state)
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}))
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}
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});
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let server = Server::bind (&addr).serve (make_svc);
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server.await?;
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Ok (())
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}
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