From fa4ecb5a7690adbbc2f4613d5a84becf114a99f3 Mon Sep 17 00:00:00 2001
From: Thibault Duplessis <t@lichess.org>
Date: Sun, 28 Nov 2021 15:36:17 +0100
Subject: [PATCH] fix relay round sync log rotation

---
 modules/relay/src/main/SyncLog.scala | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/modules/relay/src/main/SyncLog.scala b/modules/relay/src/main/SyncLog.scala
index e7b0924a3f..c4057236c0 100644
--- a/modules/relay/src/main/SyncLog.scala
+++ b/modules/relay/src/main/SyncLog.scala
@@ -14,7 +14,10 @@ case class SyncLog(events: Vector[SyncLog.Event]) extends AnyVal {
 
   def add(event: SyncLog.Event) =
     copy(
-      events = events.take(SyncLog.historySize - 1) :+ event
+      events = {
+        if (events.sizeIs > SyncLog.historySize) events drop 1
+        else events
+      } :+ event
     )
 }