@Override
    public String updateDataConfig(String extParams, InlongStreamEntity streamEntity, DataConfig dataConfig) {
        String dataSeparator = String.valueOf((char) Integer.parseInt(streamEntity.getDataSeparator()));
        FileSourceDTO fileSourceDTO = JsonUtils.parseObject(extParams, FileSourceDTO.class);
        if (Objects.nonNull(fileSourceDTO)) {
            fileSourceDTO.setDataSeparator(dataSeparator);
            dataConfig.setAuditVersion(fileSourceDTO.getAuditVersion());
            fileSourceDTO.setDataContentStyle(streamEntity.getDataType());
            extParams = JsonUtils.toJsonString(fileSourceDTO);
        }
        return extParams;
    }
File source operator, such as get or set file source info.
inlong-manager/manager-service/src/main/java/org/apache/inlong/manager/service/source/file/FileSourceOperator.java