first commit

crates/svc/examples/from_async_fn.rs

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+use std::time::Duration;
+
+use thiserror::Error;
+use tokio::time::sleep;
+
+use svc::error::SvcResult;
+use svc::manager::ServiceManager;
+
+#[derive(Error, Debug)]
+pub enum SimpleError {
+    #[error("That didn't work")]
+    Nope,
+}
+
+async fn run() -> Result<(), SimpleError> {
+    let dur = Duration::from_millis(800);
+
+    println!("Hello");
+
+    println!("1");
+    sleep(dur).await;
+    println!("2");
+    sleep(dur).await;
+    println!("3");
+
+    Ok(())
+}
+
+#[tokio::main]
+async fn main() -> SvcResult<()> {
+    pretty_env_logger::formatted_builder()
+        .filter_level(log::LevelFilter::Debug)
+        .parse_default_env()
+        .init();
+
+    let (mut client, future) = ServiceManager::spawn();
+
+    client.register_function("foo", run()).await?;
+    client.start("foo").await?;
+    println!("main: service configured");
+
+    client.wait_for_start("foo").await?;
+    println!("main: service started");
+
+    client.shutdown().await?;
+    future.await??;
+    println!("main: service stopped");
+
+    Ok(())
+}