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//! Demonstrates use of the `ServerBuilder::shutdown_signal` method using `tokio-util`s
//! `CancellationToken` helper using a nonsensical timer. In practice, this cancellation token would
//! be wired throughout your application and typically triggered by OS signals elsewhere.
use std::{io, time::Duration};
use actix_rt::net::TcpStream;
use actix_server::Server;
use actix_service::fn_service;
use tokio_util::sync::CancellationToken;
use tracing::level_filters::LevelFilter;
use tracing_subscriber::{prelude::*, EnvFilter};
async fn run(stop_signal: CancellationToken) -> io::Result<()> {
tracing_subscriber::registry()
.with(tracing_subscriber::fmt::layer())
.with(
EnvFilter::builder()
.with_default_directive(LevelFilter::INFO.into())
.from_env_lossy(),
)
.init();
let addr = ("127.0.0.1", 8080);
tracing::info!("starting server on port: {}", &addr.0);
Server::build()
.bind("shutdown-signal", addr, || {
fn_service(|_stream: TcpStream| async { Ok::<_, io::Error>(()) })
})?
.shutdown_signal(stop_signal.cancelled_owned())
.workers(2)
.run()
.await
}
#[tokio::main]
async fn main() -> io::Result<()> {
let stop_signal = CancellationToken::new();
tokio::spawn({
let stop_signal = stop_signal.clone();
async move {
tokio::time::sleep(Duration::from_secs(10)).await;
stop_signal.cancel();
}
});
run(stop_signal).await?;
Ok(())
}
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