Print source code revision on startup

build.rs

@@ -0,0 +1,13 @@
+use std::process::Command;
+fn main() {
+    // runs git describe --always --dirty
+    if let Ok(output) = Command::new("git")
+        .args(["describe", "--always", "--dirty"])
+        .output()
+    {
+        let git_hash = String::from_utf8(output.stdout).unwrap();
+        println!("cargo:rustc-env=GIT_HASH={git_hash}");
+    } else {
+        println!("cargo:rustc-env=GIT_HASH=UNKNOWN");
+    }
+}

hms2mqtt/src/lib.rs

@@ -8,4 +8,4 @@ pub mod simple_mqtt;
 
 // internal interfaces
 mod home_assistant_config;
-mod protos;
+mod protos;

src/main.rs

@@ -29,7 +29,7 @@ static REQUEST_DELAY: u64 = 30_500;
 
 fn main() {
     logging::init_logger();
-
+    info!("Running revision: {}", env!("GIT_HASH"));
     if std::env::args().len() > 1 {
         error!("Arguments passed. Tool is configured by config.toml in its path");
     }