From 5419443fe065e36cf7b8742ab490ba3a4a6aed72 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Piotr=20P=C5=82aczek?= <piotrpdev@gmail.com>
Date: Sat, 7 Sep 2024 17:39:07 +0100
Subject: [PATCH] feat: log build commit

---
 build.rs    | 28 ++++++++++++++++++++++++++++
 src/main.rs |  5 +++++
 2 files changed, 33 insertions(+)
 create mode 100644 build.rs

diff --git a/build.rs b/build.rs
new file mode 100644
index 0000000..b7d7bf0
--- /dev/null
+++ b/build.rs
@@ -0,0 +1,28 @@
+use std::process::Command;
+
+// https://stackoverflow.com/a/44407625/19020549
+
+#[allow(clippy::unnecessary_wraps)]
+fn try_main() -> Result<(), Box<dyn std::error::Error>> {
+    let Ok(output) = Command::new("git")
+        .args(["rev-parse", "--short", "HEAD"])
+        .output()
+    else {
+        return Err("Failed to get current Git commit using command".into());
+    };
+
+    let Ok(git_hash) = String::from_utf8(output.stdout) else {
+        return Err("Failed to convert Git output to UTF-8 string".into());
+    };
+
+    println!("cargo:rustc-env=GIT_HASH={git_hash}");
+
+    Ok(())
+}
+
+fn main() {
+    if let Err(e) = try_main() {
+        eprintln!("Error: {e:#?}");
+        std::process::exit(1)
+    }
+}
diff --git a/src/main.rs b/src/main.rs
index e75c657..4495bfa 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -104,6 +104,11 @@ async fn main() -> Result<()> {
             .init();
     }
     tracing::info!("Logging to {log_path:?}");
+    tracing::debug!(
+        "Running {} built from Git commit {}",
+        env!("CARGO_CRATE_NAME"),
+        env!("GIT_HASH")
+    );
 
     tracing::info!("Creating TLS config");
     let cert_dirs_to_search = get_cert_dirs_to_search(&exe_path);