From ee9c3396281cbee5d15e8fd56231584df3632f98 Mon Sep 17 00:00:00 2001
From: Dan Jaglowski <jaglows3@gmail.com>
Date: Fri, 22 Sep 2023 09:36:44 -0600
Subject: [PATCH] Log valid feature gates on error

---
 featuregate/registry.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/featuregate/registry.go b/featuregate/registry.go
index ed6cf532e32..e734711082e 100644
--- a/featuregate/registry.go
+++ b/featuregate/registry.go
@@ -109,7 +109,11 @@ func (r *Registry) Register(id string, stage Stage, opts ...RegisterOption) (*Ga
 func (r *Registry) Set(id string, enabled bool) error {
 	v, ok := r.gates.Load(id)
 	if !ok {
-		return fmt.Errorf("no such feature gate %q", id)
+		validGates := []string{}
+		r.VisitAll(func(g *Gate) {
+			validGates = append(validGates, g.ID())
+		})
+		return fmt.Errorf("no such feature gate %q. valid gates: %v", id, validGates)
 	}
 	g := v.(*Gate)