labels.labeltype_name=Nazwa
labels.labeltype_value=Wartość
labels.labeltype_included_paths=Uwzględnione ścieżki
labels.labeltype_excluded_paths=Wykluczone ścieżki
labels.roletype_configuration=Rola
labels.roletype_title_details=Rola
labels.roletype_name=Nazwa
labels.roletype_value=Wartość
labels.reqheader_configuration=Nagłówek żądania
labels.reqheader_list_name=Nazwa
labels.reqheader_list_web_crawling_config=Nazwa konfiguracji

     */
    public void test_run_noUrlsInQueue() throws Exception {
        when(urlQueueService.poll(anyString())).thenReturn(null);
        crawlerContext.setStatus(CrawlerStatus.RUNNING);
        crawlerContext.maxThreadCheckCount = 1; // Will exit after 1 check

        crawlerThread.run();

        verify(urlQueueService, times(1)).poll(anyString());
    }

    /**
     * Test run method with crawler status DONE.
     */

     *
     * @return an encryption cipher
     */
    protected Cipher pollEncryptoCipher() {
        Cipher cipher = encryptoQueue.poll();
        if (cipher == null) {
            try {
                final SecretKeySpec sksSpec = new SecretKeySpec(key.getBytes(charsetName), algorithm);
                cipher = Cipher.getInstance(algorithm);

            }

            @Override
            public void offerAll(String sessionId, List<UrlQueue<?>> newUrlQueueList) {
            }

            @Override
            public UrlQueue<?> poll(String sessionId) {
                return null;
            }

            @Override
            public void saveSession(String sessionId) {
            }

            @Override

        final List<SearchLog> searchLogList = new ArrayList<>();
        final Map<String, UserInfo> userInfoMap = new HashMap<>();
        while (!queue.isEmpty()) {
            final SearchLog searchLog = queue.poll();
            if (searchLog != null) {
                final String userAgent = searchLog.getUserAgent();
                final boolean isBot =

int maxDepth = -1               // Max depth (-1 = unlimited)
long maxAccessCount = 0         // Max URLs (0 = unlimited)
```

### CrawlerThread (`CrawlerThread.java`)

Worker thread for crawling.

**Flow**: Poll URL → Validate → Get client → Delay → Check last-modified → Execute → Process → Extract children → Queue children → Delay

### CrawlerClientFactory

Pattern-based client selection using `LinkedHashMap<Pattern, CrawlerClient>`.

    }

    @Override
    public synchronized Map<String, Object> read() {
        while (!isFinished.get() && queue.isEmpty()) {
            addDocumentToQueue();
        }

        return queue.poll();
    }

    @Override
    public void close() {
        isFinished.set(true);
        queue.clear();
    }

    /**
     * Sets the scroll size.
     * @param scrollSize The scroll size.

            requestQueue.offer(new CrawlRequest(url, 0));
            while (!requestQueue.isEmpty() && (maxAccessCount < 0 || counter < maxAccessCount)) {
                final CrawlRequest crawlRequest = requestQueue.poll();
                if ((maxDepth != -1 && crawlRequest.getDepth() > maxDepth) || processedUrls.contains(crawlRequest.getUrl())) {
                    if (logger.isDebugEnabled()) {

            final List<Tuple3<String, String, String>> taskList = new ArrayList<>();
            while (generating) {
                try {
                    final Tuple3<String, String, String> task = thumbnailTaskQueue.poll(thumbnailTaskQueueTimeout, TimeUnit.MILLISECONDS);
                    if (task == null) {
                        if (!taskList.isEmpty()) {
                            storeQueue(taskList);
                        }

     * @throws IOException If the FTP client cannot be created or connected
     */
    protected FTPClient getClient(final FtpInfo info) throws IOException {
        FTPClient ftpClient = ftpClientQueue.poll();
        if (ftpClient != null) {
            if (ftpClient.isAvailable()) {
                return ftpClient;
            }
            try {
                ftpClient.disconnect();