From 859fe0f0c2334fdd094f7c1f7216fa4a49655f8f Mon Sep 17 00:00:00 2001
From: hatsuyuki15 <5629003+hatsuyuki15@users.noreply.github.com>
Date: Fri, 10 Jun 2022 16:17:28 +0700
Subject: [PATCH] Fix: GCPAuthenticator throws null exception in some cases

---
 .../kubernetes/client/util/authenticators/GCPAuthenticator.java  | 1 +
 1 file changed, 1 insertion(+)

diff --git a/util/src/main/java/io/kubernetes/client/util/authenticators/GCPAuthenticator.java b/util/src/main/java/io/kubernetes/client/util/authenticators/GCPAuthenticator.java
index 5f5599f578..93102d6dae 100644
--- a/util/src/main/java/io/kubernetes/client/util/authenticators/GCPAuthenticator.java
+++ b/util/src/main/java/io/kubernetes/client/util/authenticators/GCPAuthenticator.java
@@ -99,6 +99,7 @@ public Map<String, Object> refresh(Map<String, Object> config) {
     String[] scopes = parseScopes(config);
     try {
       if (this.gc == null) this.gc = GoogleCredentials.getApplicationDefault().createScoped(scopes);
+      gc.refreshIfExpired();
       AccessToken accessToken = gc.getAccessToken();
       config.put(ACCESS_TOKEN, accessToken.getTokenValue());
       config.put(EXPIRY, accessToken.getExpirationTime());