From bb050bec8961ff52653681cf366fce043763d17b Mon Sep 17 00:00:00 2001
From: Isaiah Vita <isvita@amazon.com>
Date: Thu, 28 Dec 2023 09:47:44 -0800
Subject: [PATCH] fix signing middleware not found bug

---
 aws/retry/middleware.go | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/aws/retry/middleware.go b/aws/retry/middleware.go
index e956207457b..5875e1db533 100644
--- a/aws/retry/middleware.go
+++ b/aws/retry/middleware.go
@@ -328,9 +328,18 @@ func AddRetryMiddlewares(stack *smithymiddle.Stack, options AddRetryMiddlewaresO
 		middleware.LogAttempts = options.LogRetryAttempts
 	})
 
-	if err := stack.Finalize.Insert(attempt, "Signing", smithymiddle.Before); err != nil {
-		return err
+	// index retry to before signing, if signing exists
+	_, ok := stack.Finalize.Get("Signing")
+	if !ok {
+		if err := stack.Finalize.Add(attempt, smithymiddle.After); err != nil {
+			return err
+		}
+	} else {
+		if err := stack.Finalize.Insert(attempt, "Signing", smithymiddle.Before); err != nil {
+			return err
+		}
 	}
+
 	if err := stack.Finalize.Insert(&MetricsHeader{}, attempt.ID(), smithymiddle.After); err != nil {
 		return err
 	}