func renameValue(store *storage.Storage, tx *storage.Tx, currentName, newName string) error {
sourceValue, err := store.ValueByName(tx, currentName)
if err != nil {
return fmt.Errorf("could not retrieve value '%v': %v", currentName, err)
}
if sourceValue == nil {
return fmt.Errorf("no such value '%v'", currentName)
}
destValue, err := store.ValueByName(tx, newName)
if err != nil {
return fmt.Errorf("could not retrieve value '%v': %v", newName, err)
}
if destValue != nil {
return fmt.Errorf("value '%v' already exists", newName)
}
log.Infof(2, "renaming value '%v' to '%v'.", currentName, newName)
_, err = store.RenameValue(tx, sourceValue.Id, newName)
if err != nil {
return fmt.Errorf("could not rename value '%v' to '%v': %v", currentName, newName, err)
}
return nil
}