public class EmptyGenerator extends BaseThumbnailGenerator {

    @Override
    public boolean generate(final String thumbnailId, final File outputFile) {
        return false;
    }

    @Override
    public void destroy() {
        // nothing
    }

            final List<String> list = entry.getValue();
            paramMap.put(entry.getKey(), list.toArray(new String[list.size()]));
        }
        return paramMap;
    }

    @Override
    public void destroy() {
        // nothing
    }

    }

    private static void destroyContainer() {
        TimeoutManager.getInstance().stop();
        synchronized (SingletonLaContainerFactory.class) {
            SingletonLaContainerFactory.destroy();
        }
    }

    private static int process(final Options options) {
        final DynamicProperties systemProperties = ComponentUtil.getSystemProperties();

    @Override
    public void rollback() {
        for (final MultipartFormFile formFile : elementsFile.values()) {
            formFile.destroy();
        }
    }

    // ===================================================================================
    //                                                                            Add Text

    protected final ConcurrentHashMap<String, JobProcess> runningProcessMap = new ConcurrentHashMap<>();

    protected int processDestroyTimeout = 10;

    @PreDestroy
    public void destroy() {
        for (final String sessionId : runningProcessMap.keySet()) {
            if (logger.isInfoEnabled()) {
                logger.info("Stopping process {}", sessionId);
            }

    @PreDestroy
    public void destroy() {
        generating = false;
        thumbnailQueueThread.interrupt();
        try {
            thumbnailQueueThread.join(10000);
        } catch (final InterruptedException e) {
            logger.warn("Thumbnail thread is timeouted.", e);
        }
        generatorList.forEach(g -> {
            try {
                g.destroy();
            } catch (final Exception e) {

        crawlerStatsHelper.begin(key);
        crawlerStatsHelper.record(key, "aaa");
        logger.info(localLogMsg.get());
        assertNull(localLogMsg.get());

        crawlerStatsHelper.destroy();
        logger.info(localLogMsg.get());
        String[] values = localLogMsg.get().split("\t");
        assertEquals(3, values.length);
        assertEquals("url:test", values[0]);

public interface ThumbnailGenerator {

    String getName();

    boolean generate(String thumbnailId, File outputFile);

    boolean isTarget(Map<String, Object> docMap);

    boolean isAvailable();

    void destroy();

    Tuple3<String, String, String> createTask(String path, Map<String, Object> docMap);

        // you can add your own process when your application is booting or closing
        direction.directCurtainBefore(createCurtainBeforeHook());
        direction.directCurtainFinally(createCurtainFinallyHook()); // when destroy

        direction.directSecurity(createSecurityResourceProvider());
        direction.directTime(createTimeResourceProvider());
        direction.directMail(createFessMailDeliveryDepartmentCreator().create());

    }

    private static void destroyContainer() {
        TimeoutManager.getInstance().stop();
        synchronized (SingletonLaContainerFactory.class) {
            SingletonLaContainerFactory.destroy();
        }
    }

    private static int process(final Options options) {
        final DynamicProperties systemProperties = ComponentUtil.getSystemProperties();