object/s3: use default credential chain in autoS3Region when accessKey is empty (#6754)

Copilot · zhijian-pro · web-flow · commit 1e9aac32c737 · 2026-03-20T10:05:50.000+08:00
Co-authored-by: copilot-swe-agent[bot] &lt;198982749+Copilot@users.noreply.github.com&gt;
Co-authored-by: zhijian-pro &lt;31313340+zhijian-pro@users.noreply.github.com&gt;
diff --git a/pkg/object/s3.go b/pkg/object/s3.go
@@ -384,7 +384,13 @@ func (s *s3client) SetStorageClass(sc string) error {
 }
 
 func autoS3Region(bucketName, accessKey, secretKey string) (string, error) {
-	cfg, err := config.LoadDefaultConfig(ctx, config.WithCredentialsProvider(credentials.NewStaticCredentialsProvider(accessKey, secretKey, "")))
+	var cfg aws.Config
+	var err error
+	if accessKey != "" {
+		cfg, err = config.LoadDefaultConfig(ctx, config.WithCredentialsProvider(credentials.NewStaticCredentialsProvider(accessKey, secretKey, "")))
+	} else {
+		cfg, err = config.LoadDefaultConfig(ctx)
+	}
 	if err != nil {
 		return "", err
 	}

Original file line number	Diff line number	Diff line change
`@@ -384,7 +384,13 @@ func (s *s3client) SetStorageClass(sc string) error {`
`384`	`384`	`}`
`385`	`385`
`386`	`386`	`func autoS3Region(bucketName, accessKey, secretKey string) (string, error) {`
`387`		`- cfg, err := config.LoadDefaultConfig(ctx, config.WithCredentialsProvider(credentials.NewStaticCredentialsProvider(accessKey, secretKey, "")))`
	`387`	`+ var cfg aws.Config`
	`388`	`+ var err error`
	`389`	`+ if accessKey != "" {`
	`390`	`+ cfg, err = config.LoadDefaultConfig(ctx, config.WithCredentialsProvider(credentials.NewStaticCredentialsProvider(accessKey, secretKey, "")))`
	`391`	`+ } else {`
	`392`	`+ cfg, err = config.LoadDefaultConfig(ctx)`
	`393`	`+ }`
`388`	`394`	`if err != nil {`
`389`	`395`	`return "", err`
`390`	`396`	`}`