From 439605a59f4688ba8e318050becc89595aaf4a7a Mon Sep 17 00:00:00 2001
From: omair <omairn@google.com>
Date: Thu, 26 Oct 2023 01:06:00 +0000
Subject: [PATCH] fix: add warning to retry_target to avoid incorrect usage

---
 google/api_core/retry.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/google/api_core/retry.py b/google/api_core/retry.py
index 84b5d0fe7..49ed2544e 100644
--- a/google/api_core/retry.py
+++ b/google/api_core/retry.py
@@ -62,6 +62,7 @@ def check_if_exists():
 import random
 import sys
 import time
+import inspect
 from typing import Any, Callable, TypeVar, TYPE_CHECKING
 
 import requests.exceptions
@@ -201,7 +202,10 @@ def retry_target(
 
     for sleep in sleep_generator:
         try:
-            return target()
+            result = target()
+            if inspect.isawaitable(result):
+                raise exceptions.GoogleAPIError("Warning: Use google.api_core.retry_async.AsyncRetry for async calls!")
+            return result
 
         # pylint: disable=broad-except
         # This function explicitly must deal with broad exceptions.