Add metric for re-org distance (sigp#3566)

## Issue Addressed NA ## Proposed Changes Add a metric to track the re-org distance. ## Additional Info NA
Woodpile37 · Jan 6, 2024 · c5ec41f · c5ec41f
1 parent 1d6eb13
commit c5ec41f
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diff --git a/beacon_node/beacon_chain/src/canonical_head.rs b/beacon_node/beacon_chain/src/canonical_head.rs
@@ -1189,6 +1189,10 @@ fn detect_reorg<E: EthSpec>(
 
         metrics::inc_counter(&metrics::FORK_CHOICE_REORG_COUNT);
         metrics::inc_counter(&metrics::FORK_CHOICE_REORG_COUNT_INTEROP);
+        metrics::set_gauge(
+            &metrics::FORK_CHOICE_REORG_DISTANCE,
+            reorg_distance.as_u64() as i64,
+        );
         warn!(
             log,
             "Beacon chain re-org";

diff --git a/beacon_node/beacon_chain/src/metrics.rs b/beacon_node/beacon_chain/src/metrics.rs
@@ -305,6 +305,10 @@ lazy_static! {
         "beacon_fork_choice_reorg_total",
         "Count of occasions fork choice has switched to a different chain"
     );
+    pub static ref FORK_CHOICE_REORG_DISTANCE: Result<IntGauge> = try_create_int_gauge(
+        "beacon_fork_choice_reorg_distance",
+        "The distance of each re-org of the fork choice algorithm"
+    );
     pub static ref FORK_CHOICE_REORG_COUNT_INTEROP: Result<IntCounter> = try_create_int_counter(
         "beacon_reorgs_total",
         "Count of occasions fork choice has switched to a different chain"