From 2effa942e1150b9dc6df4375e746e97cb59d2474 Mon Sep 17 00:00:00 2001
From: Matthias Seitz <matthias.seitz@outlook.de>
Date: Tue, 11 Jul 2023 15:56:33 +0200
Subject: [PATCH] feat: add performed pool state updates metric (#3714)

---
 crates/transaction-pool/src/metrics.rs     | 3 +++
 crates/transaction-pool/src/pool/txpool.rs | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/crates/transaction-pool/src/metrics.rs b/crates/transaction-pool/src/metrics.rs
index 5be12634e5..1a29e4b75f 100644
--- a/crates/transaction-pool/src/metrics.rs
+++ b/crates/transaction-pool/src/metrics.rs
@@ -33,6 +33,9 @@ pub struct TxPoolMetrics {
 
     /// Number of all transactions of all sub-pools: pending + basefee + queued
     pub(crate) total_transactions: Gauge,
+
+    /// How often the pool was updated after the canonical state changed
+    pub(crate) performed_state_updates: Counter,
 }
 
 /// Transaction pool maintenance metrics
diff --git a/crates/transaction-pool/src/pool/txpool.rs b/crates/transaction-pool/src/pool/txpool.rs
index 9793da32a3..6b1bad8644 100644
--- a/crates/transaction-pool/src/pool/txpool.rs
+++ b/crates/transaction-pool/src/pool/txpool.rs
@@ -261,6 +261,8 @@ impl<T: TransactionOrdering> TxPool<T> {
         // update the metrics after the update
         self.update_size_metrics();
 
+        self.metrics.performed_state_updates.increment(1);
+
         OnNewCanonicalStateOutcome { block_hash, mined: mined_transactions, promoted, discarded }
     }