From 70ec51d770cc28999467f3678addec4913f204c4 Mon Sep 17 00:00:00 2001
From: teor <teor@riseup.net>
Date: Fri, 15 Oct 2021 00:41:07 +1000
Subject: [PATCH] Zero the mempool metrics when the mempool is disabled (#2875)

Co-authored-by: Conrado Gouvea <conrado@zfnd.org>
---
 zebrad/src/components/mempool/storage/verified_set.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/zebrad/src/components/mempool/storage/verified_set.rs b/zebrad/src/components/mempool/storage/verified_set.rs
index 87d94aafb..7a120c096 100644
--- a/zebrad/src/components/mempool/storage/verified_set.rs
+++ b/zebrad/src/components/mempool/storage/verified_set.rs
@@ -43,6 +43,13 @@ pub struct VerifiedSet {
     orchard_nullifiers: HashSet<orchard::Nullifier>,
 }
 
+impl Drop for VerifiedSet {
+    fn drop(&mut self) {
+        // zero the metrics on drop
+        self.clear()
+    }
+}
+
 impl VerifiedSet {
     /// Returns an iterator over the transactions in the set.
     pub fn transactions(&self) -> impl Iterator<Item = &UnminedTx> + '_ {