Timeout on Command

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tokiocommandtimeouttest/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "tokiocommandtimeouttest"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+tokio = { version = "1.32.0", features = ["rt", "time", "process", "macros"] }

tokiocommandtimeouttest/README.md

@@ -0,0 +1,3 @@
+# TokioCommandTimeoutTest
+
+Testing using the Timeout feature of futures while running external processes.

tokiocommandtimeouttest/src/main.rs

@@ -0,0 +1,41 @@
+use std::ffi::OsString;
+use std::path::PathBuf;
+use std::time::Duration;
+
+use tokio::process::Command;
+use tokio::time::timeout;
+
+/// Special script that looks for some file in $PATH.
+fn search_in_path(name: &str) -> Option<PathBuf> {
+    let path = std::env::var_os("PATH").unwrap_or_else(OsString::new);
+    std::env::split_paths(&path).find_map(|dir| {
+        let full_path = dir.join(name);
+        if full_path.is_file() {
+            Some(full_path)
+        } else {
+            None
+        }
+    })
+}
+
+#[tokio::main(flavor = "current_thread")]
+async fn main() {
+    let sleep = search_in_path("sleep").unwrap();
+
+    println!("Run 3 secs");
+    let mut cmd = Command::new(&sleep).arg("3s").spawn().unwrap();
+
+    if let Err(_) = timeout(Duration::from_secs(4), cmd.wait()).await {
+        println!("Got timeout!");
+    } else {
+        println!("No timeout");
+    }
+
+    println!("Run 5 secs");
+    let mut cmd = Command::new(&sleep).arg("5s").spawn().unwrap();
+    if let Err(_) = timeout(Duration::from_secs(4), cmd.wait()).await {
+        println!("Got timeout")
+    } else {
+        println!("No timeout");
+    }
+}