From 93a8bb4af030af28d00c184bc75eadf3b24a0f1d Mon Sep 17 00:00:00 2001
From: Ted Yu <yute@vmware.com>
Date: Mon, 4 Nov 2019 10:04:31 -0800
Subject: [PATCH] Prevent panic due to Annotations being nil map

Kubernetes-commit: c5792784e1ae689cb4c949b9c556ee1e4896064a
---
 tools/leaderelection/resourcelock/endpointslock.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/leaderelection/resourcelock/endpointslock.go b/tools/leaderelection/resourcelock/endpointslock.go
index e01b0d49..f5a8ffcc 100644
--- a/tools/leaderelection/resourcelock/endpointslock.go
+++ b/tools/leaderelection/resourcelock/endpointslock.go
@@ -82,6 +82,9 @@ func (el *EndpointsLock) Update(ler LeaderElectionRecord) error {
 	if err != nil {
 		return err
 	}
+	if el.e.Annotations == nil {
+		el.e.Annotations = make(map[string]string)
+	}
 	el.e.Annotations[LeaderElectionRecordAnnotationKey] = string(recordBytes)
 	el.e, err = el.Client.Endpoints(el.EndpointsMeta.Namespace).Update(el.e)
 	return err