tosub 0.1.0

A subsystem lifecycle management library for tokio applications
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

use std::{io, time::Duration};
use tosub::Subsystem;
use tracing::level_filters::LevelFilter;
use tracing_subscriber::{EnvFilter, Layer, fmt, layer::SubscriberExt, util::SubscriberInitExt};

#[tokio::main]
async fn main() {
    tracing_subscriber::registry()
        .with(
            fmt::Layer::new().with_writer(io::stderr).with_filter(
                EnvFilter::builder()
                    .with_default_directive(LevelFilter::INFO.into())
                    .with_env_var("WORTERBUCH_LOG")
                    .from_env_lossy(),
            ),
        )
        .init();

    Subsystem::build_root("root")
        .catch_signals()
        .with_timeout(Duration::from_secs(5))
        .start(|root| async move {
            root.spawn("tick", |s| async move {
                for i in 0..10 {
                    println!("tick {i}");
                    tokio::time::sleep(Duration::from_secs(1)).await;
                }
                s.request_global_shutdown();
                Ok::<(), miette::Report>(())
            });

            root.shutdown_requested().await;
            Ok::<(), miette::Report>(())
        })
        .join()
        .await;
}