refactor: refactor the register version metrics function

crates/node-core/src/metrics/prometheus_exporter.rs

@@ -1,6 +1,6 @@
 //! Prometheus exporter
 
-use crate::metrics::version_metrics::register_version_metrics;
+use crate::metrics::version_metrics::{register_version_metrics, VersionInfo};
 use eyre::WrapErr;
 use futures::{future::FusedFuture, FutureExt};
 use http::Response;
@@ -151,7 +151,7 @@ where
     process.describe();
     describe_memory_stats();
     describe_io_stats();
-    register_version_metrics();
+    register_version_metrics(VersionInfo::default());
 
     Ok(())
 }

crates/node-core/src/metrics/version_metrics.rs

@@ -3,16 +3,38 @@
 use crate::version::build_profile_name;
 use metrics::gauge;
 
-const LABELS: [(&str, &str); 6] = [
-    ("version", env!("CARGO_PKG_VERSION")),
-    ("build_timestamp", env!("VERGEN_BUILD_TIMESTAMP")),
-    ("cargo_features", env!("VERGEN_CARGO_FEATURES")),
-    ("git_sha", env!("VERGEN_GIT_SHA")),
-    ("target_triple", env!("VERGEN_CARGO_TARGET_TRIPLE")),
-    ("build_profile", build_profile_name()),
-];
+pub struct VersionInfo {
+    version: &str,
+    build_timestamp: &str,
+    cargo_features: &str,
+    git_sha: &str,
+    target_triple: &str,
+    build_profile: &str,
+}
+
+impl Default for VersionInfo {
+    fn default() -> Self {
+        VersionInfo {
+            version: env!("CARGO_PKG_VERSION"),
+            build_timestamp: env!("VERGEN_BUILD_TIMESTAMP"),
+            cargo_features: env!("VERGEN_CARGO_FEATURES"),
+            git_sha: env!("VERGEN_GIT_SHA"),
+            target_triple: env!("VERGEN_CARGO_TARGET_TRIPLE"),
+            build_profile: build_profile_name(),
+        }
+    }
+}
 
 /// This exposes reth's version information over prometheus.
-pub fn register_version_metrics() {
-    let _gauge = gauge!("info", &LABELS);
+pub fn register_version_metrics(version_info: VersionInfo) {
+    let labels: [(&str, &str); 6] = [
+        ("version", version_info.version),
+        ("build_timestamp", version_info.build_timestamp),
+        ("cargo_features", version_info.cargo_features),
+        ("git_sha", version_info.git_sha),
+        ("target_triple", version_info.target_triple),
+        ("build_profile", version_info.build_profile),
+    ];
+
+    let _gauge = gauge!("info", &labels);
 }