From a0707229370508ad3d92e23f0414a0abd7b5f391 Mon Sep 17 00:00:00 2001
From: James Shubin <james@shubin.ca>
Date: Tue, 9 Sep 2025 01:56:45 -0400
Subject: [PATCH] etcd: Lock around read to prevent race

---
 etcd/helpers.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/etcd/helpers.go b/etcd/helpers.go
index 62b3d173..f322e713 100644
--- a/etcd/helpers.go
+++ b/etcd/helpers.go
@@ -54,8 +54,10 @@ func (obj *EmbdEtcd) setEndpoints() {
 		return
 	}
 
+	obj.stateMutex.Lock()
 	eps := etcdUtil.FromURLsMapToStringList(obj.endpoints) // get flat list
-	sort.Strings(eps)                                      // sort for determinism
+	obj.stateMutex.Unlock()
+	sort.Strings(eps) // sort for determinism
 
 	curls, _ := obj.curls() // ignore error, was already validated