fix SeaweedFS rename compatibility

Signed-off-by: Nicola Murino <nicola.murino@gmail.com>

internal/vfs/s3fs.go

@@ -295,63 +295,53 @@ func (fs *S3Fs) Rename(source, target string) error {
 	if err != nil {
 		return err
 	}
-	copySource := fs.Join(fs.config.Bucket, source)
 	if fi.IsDir() {
 		hasContents, err := fs.hasContents(source)
 		if err != nil {
 			return err
 		}
 		if hasContents {
-			return fmt.Errorf("cannot rename non empty directory: %#v", source)
+			return fmt.Errorf("cannot rename non empty directory: %q", source)
 		}
-		if !strings.HasSuffix(copySource, "/") {
-			copySource += "/"
-		}
-		if !strings.HasSuffix(target, "/") {
-			target += "/"
+		if err := fs.mkdirInternal(target); err != nil {
+			return err
 		}
-	}
-	var contentType string
-	if fi.IsDir() {
-		contentType = s3DirMimeType
 	} else {
-		contentType = mime.TypeByExtension(path.Ext(source))
-	}
-	copySource = pathEscape(copySource)
+		contentType := mime.TypeByExtension(path.Ext(source))
+		copySource := pathEscape(fs.Join(fs.config.Bucket, source))
 
-	if fi.Size() > 500*1024*1024 {
-		fsLog(fs, logger.LevelDebug, "renaming file %q with size %d using multipart copy",
-			source, fi.Size())
-		err = fs.doMultipartCopy(copySource, target, contentType, fi.Size())
-	} else {
-		ctx, cancelFn := context.WithDeadline(context.Background(), time.Now().Add(fs.ctxTimeout))
-		defer cancelFn()
+		if fi.Size() > 500*1024*1024 {
+			fsLog(fs, logger.LevelDebug, "renaming file %q with size %d using multipart copy",
+				source, fi.Size())
+			err = fs.doMultipartCopy(copySource, target, contentType, fi.Size())
+		} else {
+			ctx, cancelFn := context.WithDeadline(context.Background(), time.Now().Add(fs.ctxTimeout))
+			defer cancelFn()
+
+			_, err = fs.svc.CopyObject(ctx, &s3.CopyObjectInput{
+				Bucket:       aws.String(fs.config.Bucket),
+				CopySource:   aws.String(copySource),
+				Key:          aws.String(target),
+				StorageClass: types.StorageClass(fs.config.StorageClass),
+				ACL:          types.ObjectCannedACL(fs.config.ACL),
+				ContentType:  util.NilIfEmpty(contentType),
+			})
+		}
+		if err != nil {
+			metric.S3CopyObjectCompleted(err)
+			return err
+		}
 
-		_, err = fs.svc.CopyObject(ctx, &s3.CopyObjectInput{
-			Bucket:       aws.String(fs.config.Bucket),
-			CopySource:   aws.String(copySource),
-			Key:          aws.String(target),
-			StorageClass: types.StorageClass(fs.config.StorageClass),
-			ACL:          types.ObjectCannedACL(fs.config.ACL),
-			ContentType:  util.NilIfEmpty(contentType),
-		})
-	}
-	if err != nil {
+		waiter := s3.NewObjectExistsWaiter(fs.svc)
+		err = waiter.Wait(context.Background(), &s3.HeadObjectInput{
+			Bucket: aws.String(fs.config.Bucket),
+			Key:    aws.String(target),
+		}, 10*time.Second)
 		metric.S3CopyObjectCompleted(err)
-		return err
-	}
-
-	waiter := s3.NewObjectExistsWaiter(fs.svc)
-	err = waiter.Wait(context.Background(), &s3.HeadObjectInput{
-		Bucket: aws.String(fs.config.Bucket),
-		Key:    aws.String(target),
-	}, 10*time.Second)
-	metric.S3CopyObjectCompleted(err)
-	if err != nil {
-		return err
-	}
-	if plugin.Handler.HasMetadater() {
-		if !fi.IsDir() {
+		if err != nil {
+			return err
+		}
+		if plugin.Handler.HasMetadater() {
 			err = plugin.Handler.SetModificationTime(fs.getStorageID(), ensureAbsPath(target),
 				util.GetTimeAsMsSinceEpoch(fi.ModTime()))
 			if err != nil {
@@ -399,14 +389,7 @@ func (fs *S3Fs) Mkdir(name string) error {
 	if !fs.IsNotExist(err) {
 		return err
 	}
-	if !strings.HasSuffix(name, "/") {
-		name += "/"
-	}
-	_, w, _, err := fs.Create(name, -1)
-	if err != nil {
-		return err
-	}
-	return w.Close()
+	return fs.mkdirInternal(name)
 }
 
 // Symlink creates source as a symbolic link to target.
@@ -784,6 +767,17 @@ func (fs *S3Fs) setConfigDefaults() {
 	}
 }
 
+func (fs *S3Fs) mkdirInternal(name string) error {
+	if !strings.HasSuffix(name, "/") {
+		name += "/"
+	}
+	_, w, _, err := fs.Create(name, -1)
+	if err != nil {
+		return err
+	}
+	return w.Close()
+}
+
 func (fs *S3Fs) hasContents(name string) (bool, error) {
 	prefix := fs.getPrefix(name)
 	paginator := s3.NewListObjectsV2Paginator(fs.svc, &s3.ListObjectsV2Input{