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Add optimistic_sync metric #8059

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Add optimistic_sync metric #8059

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04b1e54
add is_optimistic metric
chong-he Sep 16, 2025
bcb66c9
revise
chong-he Sep 22, 2025
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7 changes: 7 additions & 0 deletions beacon_node/client/src/metrics.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,13 @@ pub static IS_SYNCED: LazyLock<Result<IntGauge>> = LazyLock::new(|| {
)
});

pub static IS_OPTIMISTIC_SYNC: LazyLock<Result<IntGauge>> = LazyLock::new(|| {
try_create_int_gauge(
"optimistic_sync",
"Metric to check if the beacon chain is in optimistic sync mode. 0 if synced and 1 if optimistic sync",
)
});

pub static NOTIFIER_HEAD_SLOT: LazyLock<Result<IntGauge>> = LazyLock::new(|| {
try_create_int_gauge(
"notifier_head_slot",
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6 changes: 5 additions & 1 deletion beacon_node/client/src/notifier.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -274,8 +274,12 @@ pub fn spawn_notifier<T: BeaconChainTypes>(

let block_hash = match beacon_chain.canonical_head.head_execution_status() {
Ok(ExecutionStatus::Irrelevant(_)) => "n/a".to_string(),
Ok(ExecutionStatus::Valid(hash)) => format!("{} (verified)", hash),
Ok(ExecutionStatus::Valid(hash)) => {
metrics::set_gauge(&metrics::IS_OPTIMISTIC_SYNC, 0);
format!("{} (verified)", hash)
}
Ok(ExecutionStatus::Optimistic(hash)) => {
metrics::set_gauge(&metrics::IS_OPTIMISTIC_SYNC, 1);
warn!(
info = "chain not fully verified, \
block and attestation production disabled until execution engine syncs",
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