/**
     * Preprocesses a URI to ensure it has the correct GCS protocol prefix.
     * @param uri the URI to preprocess
     * @return the preprocessed URI with gcs:// prefix
     * @throws CrawlerSystemException if the URI is empty
     */
    protected String preprocessUri(final String uri) {
        if (StringUtil.isEmpty(uri)) {

            // base href
            final String baseHref = getBaseHref(document);
            URI uri;
            try {
                uri = new URI(baseHref == null ? responseData.getUrl() : baseHref);
            } catch (final Exception e) {
                uri = new URI(responseData.getUrl());
            }
            final URI baseUri = uri;
            getChildUrlRules(responseData, resultData).forEach(entry -> {

        }
    }

    /**
     * Preprocesses a URI to ensure it's in the correct format for file system access.
     *
     * @param uri the URI to preprocess
     * @return the preprocessed URI
     * @throws CrawlerSystemException if the URI is empty
     */
    protected String preprocessUri(final String uri) {
        if (StringUtil.isEmpty(uri)) {

    }

    /**
     * Preprocesses a URI to ensure it has the correct S3 protocol prefix.
     * @param uri the URI to preprocess
     * @return the preprocessed URI with s3:// prefix
     * @throws CrawlerSystemException if the URI is empty
     */
    protected String preprocessUri(final String uri) {
        if (StringUtil.isEmpty(uri)) {

    }

    /**
     * Preprocesses the URI before processing the request.
     *
     * @param uri the URI to preprocess
     * @return the preprocessed URI
     * @throws CrawlerSystemException if the URI is empty
     */
    protected String preprocessUri(final String uri) {
        if (StringUtil.isEmpty(uri)) {
            throw new CrawlerSystemException("SMB URI is empty. Please provide a valid SMB URI (smb://...).");

    @Override
    public ResponseData doGet(final String uri) {
        return processRequest(uri, true);
    }

    /**
     * Processes an FTP request to retrieve data from the specified URI.
     * This method handles the complete FTP request lifecycle including timeout management,
     * connection setup, and data retrieval.
     *
     * @param uri The URI to retrieve data from

        // Test that accessTimeoutTask null check prevents NPE
        StorageClient client = new StorageClient() {
            @Override
            protected ResponseData processRequest(final String uri, final boolean includeContent) {
                // Skip init() and directly test timeout handling
                org.codelibs.fess.crawler.client.AccessTimeoutTarget accessTimeoutTarget = null;

        } else if (urlStr.startsWith("//")) {
            value = "http:" + urlStr;
        } else {
            value = urlStr;
        }
        try {
            final URI uri = URI.create(value);
            final String host = uri.getHost();
            if (StringUtil.isBlank(host) || "http".equalsIgnoreCase(host) || "https".equalsIgnoreCase(host)) {
                return false;
            }

        if (StringUtil.isBlank(url) || url.startsWith("file:")) {
            // not target
            return;
        }

        try {
            final URI uri = new URI(url);
            final String host = uri.getHost();
            if (host == null) {
                return;
            }

            // Atomically get or create the AtomicLong for this host using Cache.get()

        }

        try {
            final int pos = path.indexOf('/', 6);
            final URI uri = new URI(pos == -1 ? path : path.substring(0, pos));
            if (!"ftp".equals(uri.getScheme()) || (StringUtil.isNotBlank(server) && !server.equals(uri.getHost()))) {
                return false;
            }
            int p = uri.getPort();
            if (p == -1) {
                p = 21;
            }