Merge pull request 'rpc/system_metrics.rs: Added rustversion label to garage_build_info metric.' (#524) from jpds/garage:rustversion-label into main

Reviewed-on: https://git.deuxfleurs.fr/Deuxfleurs/garage/pulls/524

3 files changed, 15 insertions, 0 deletions

diff --git a/src/util/Cargo.toml b/src/util/Cargo.toml
index abeccbbd..9c182fd6 100644
--- a/src/util/Cargo.toml
+++ b/src/util/Cargo.toml
@@ -47,6 +47,9 @@ hyper = "0.14"
 
 opentelemetry = { version = "0.17", features = [ "rt-tokio", "metrics", "trace" ] }
 
+[build-dependencies]
+rustc_version = "0.4.0"
+
 [dev-dependencies]
 mktemp = "0.5"
 
diff --git a/src/util/build.rs b/src/util/build.rs
new file mode 100644
index 00000000..a4e955b8
--- /dev/null
+++ b/src/util/build.rs
@@ -0,0 +1,8 @@
+use rustc_version::version;
+
+fn main() {
+	// Acquire the version of Rust used to compile, this is added as a label to
+	// the garage_build_info metric.
+	let v = version().unwrap();
+	println!("cargo:rustc-env=RUSTC_VERSION={v}");
+}
diff --git a/src/util/version.rs b/src/util/version.rs
index b515dccc..2b2ea271 100644
--- a/src/util/version.rs
+++ b/src/util/version.rs
@@ -26,3 +26,7 @@ pub fn init_version(version: &'static str) {
 pub fn init_features(features: &'static [&'static str]) {
 	FEATURES.store(Some(Arc::new(features)));
 }
+
+pub fn rust_version() -> &'static str {
+	env!("RUSTC_VERSION")
+}