* normalizing configurations, and other system-related tasks.
 */
public class SystemHelper {

    /**
     * Constructs a new system helper.
     */
    public SystemHelper() {
        // do nothing
    }

    private static final Logger logger = LogManager.getLogger(SystemHelper.class);

    /** A map of design JSP file names. */

            systemHelper.setLogLevel("INFO");
            assertEquals("INFO", systemHelper.getLogLevel());
            systemHelper.setLogLevel("WARN");
            assertEquals("WARN", systemHelper.getLogLevel());
            systemHelper.setLogLevel("ERROR");
            assertEquals("ERROR", systemHelper.getLogLevel());
        } finally {
            systemHelper.setLogLevel(logLevel);

     * @return The write call.
     */
    public static Consumer<Writer> getSearchLogNdjsonWriteCall() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final long timeout = fessConfig.getIndexBackupLogLoadTimeoutAsInteger().longValue();
        return writer -> {

            if (permissions == null) {
                final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
                final Set<String> permissionSet = new HashSet<>();
                permissionSet.add(systemHelper.getSearchRoleByUser(name));
                stream(groups).of(stream -> stream.forEach(s -> permissionSet.add(systemHelper.getSearchRoleByGroup(s))));

            @Override
            public void deleteBefore(int days) {
                deleteUserInfoCalled[0] = true;
                userInfoDeletedDays[0] = days;
            }
        };

        SystemHelper systemHelper = new SystemHelper() {
            @Override
            public long getCurrentTimeAsLong() {
                // Return consistent time for testing
                if (expectedTime[0] == 0) {

     */
    public static List<Map<String, Object>> getLogFileItems() {
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final List<Map<String, Object>> logFileItems = new ArrayList<>();
        final String logFilePath = systemHelper.getLogFilePath();
        if (StringUtil.isNotBlank(logFilePath)) {
            final Path logDirPath = Paths.get(logFilePath);

            public boolean getIndexerFavoriteCountEnabledAsBoolean() {
                return true;
            }
        };

        // Register components
        ComponentUtil.register(systemHelper, "systemHelper");
        ComponentUtil.register(indexingHelper, "indexingHelper");
        ComponentUtil.register(crawlingInfoHelper, "crawlingInfoHelper");
        ComponentUtil.register(searchLogHelper, "searchLogHelper");

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();

        final StringBuilder resultBuf = new StringBuilder();

        final PingResponse ping = searchEngineClient.ping();
        final int status = ping.getStatus();
        if (systemHelper.isChangedClusterState(status)) {
            if (fessConfig.hasNotification()) {

            logger.warn("{} is empty.", Constants.SCHEDULED_JOB);
            return;
        }
        runtime.stopIfNeeds();

        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final JobManager jobManager = ComponentUtil.getJobManager();
        final ScheduledJob scheduledJob = (ScheduledJob) runtime.getParameterMap().get(Constants.SCHEDULED_JOB);

     */
    public static OptionalEntity<DuplicateHost> getDuplicateHost(final CreateForm form) {
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final String username = systemHelper.getUsername();
        final long currentTime = systemHelper.getCurrentTimeAsLong();
        return getEntity(form, username, currentTime).map(entity -> {
            entity.setUpdatedBy(username);