synchronized processImport (String url, String importType) throws RuntimeException {

    InputStream stream = new URL(url).openStream();
    BufferedReader reader = new BufferedReader(new InputStreamReader(stream));

    String code;
    int i = 0;
    try {
        List<ComingInHotCode> buffer = new ArrayList<>();
        while((code = reader.readLine()) != null) {
            try {
                buffer.add(new CodeDomainObject([code: code, used: false, type: importType]));
                if (i % 100 == 0) {
                    CodeDomainObject.saveAll(buffer);
                    buffer.clear();
                }

            } catch (Exception ex) {
                println ("Save error:" + ex.getMessage())
            }
            i++;
        }
        CodeDomainObject.saveAll(buffer);

    } catch (Exception ex) {
        throw ex;
    } finally {
        reader.close();
        stream.close();
    }
}