Don't full remove unzip dir on startup

internal/service/transfer_manager_service.go

@@ -64,17 +64,12 @@ func (t *TransferManagerService) CleanUpUnzipDir() {
 		return
 	}
 
-	err = os.RemoveAll(unzipBase)
+	err = utils.RemoveContents(unzipBase)
 	if err != nil {
-		log.Errorf("Error removing unzip base location: %s", err.Error())
-		return
-	}
-
-	err = os.MkdirAll(unzipBase, 0755)
-	if err != nil {
-		log.Errorf("Error creating unzip base location: %s", err.Error())
+		log.Errorf("Error cleaning unzip directory: %s", err.Error())
 		return
 	}
+
 }
 
 func (manager *TransferManagerService) ConfigUpdatedCallback(currentConfig config.Config, newConfig config.Config) {

internal/utils/utils.go

@@ -151,3 +151,23 @@ func IsDirectoryWriteable(path string) bool {
 
 	return true
 }
+
+//https://stackoverflow.com/questions/33450980/how-to-remove-all-contents-of-a-directory-using-golang
+func RemoveContents(dir string) error {
+	d, err := os.Open(dir)
+	if err != nil {
+			return err
+	}
+	defer d.Close()
+	names, err := d.Readdirnames(-1)
+	if err != nil {
+			return err
+	}
+	for _, name := range names {
+			err = os.RemoveAll(filepath.Join(dir, name))
+			if err != nil {
+					return err
+			}
+	}
+	return nil
+}