From 186464bf5920fb3b76499ac542b0fb90023629de Mon Sep 17 00:00:00 2001
From: Carl Lundin <108372512+clundin25@users.noreply.github.com>
Date: Mon, 26 Sep 2022 23:07:38 +0000
Subject: [PATCH] Revert "fix: Update token refresh threshold from 20 seconds
 to 5 minutes (#1146)" (#1153)

This reverts commit 261a56138fba33ff7d898ab5907a6098125fefef.
---
 google/auth/_helpers.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/google/auth/_helpers.py b/google/auth/_helpers.py
index c70fd6a6b..1b08ab87f 100644
--- a/google/auth/_helpers.py
+++ b/google/auth/_helpers.py
@@ -23,7 +23,11 @@
 from six.moves import urllib
 
 
-REFRESH_THRESHOLD = datetime.timedelta(seconds=300)
+# Token server doesn't provide a new a token when doing refresh unless the
+# token is expiring within 30 seconds, so refresh threshold should not be
+# more than 30 seconds. Otherwise auth lib will send tons of refresh requests
+# until 30 seconds before the expiration, and cause a spike of CPU usage.
+REFRESH_THRESHOLD = datetime.timedelta(seconds=20)
 
 
 def copy_docstring(source_class):