chore: centralize metrics functions

bin/builder.rs

@@ -58,6 +58,7 @@ async fn main() -> eyre::Result<()> {
     }
 
     let config = builder::config_from_env();
+    builder::init_metrics();
     let init_span_guard = info_span!("builder initialization").entered();
 
     info!(pkg_version = PKG_VERSION, git_commit = GIT_COMMIT, "starting builder");

src/lib.rs

@@ -16,6 +16,9 @@
 #[macro_use]
 mod macros;
 
+/// Centralized metrics for the builder.
+pub(crate) mod metrics;
+
 /// Configuration for the Builder binary.
 pub mod config;
 
@@ -72,6 +75,12 @@ pub fn config() -> &'static config::BuilderConfig {
     &CONFIG_AND_GUARD.get().expect("Builder config not initialized").config
 }
 
+/// Register all metric descriptions. Call once at startup after the metrics
+/// recorder is installed.
+pub fn init_metrics() {
+    metrics::init();
+}
+
 /// Get a reference to the Signet system constants from the global Builder
 /// configuration.
 ///