try {
            responseData.setMethod(includeContent ? Constants.GET_METHOD : Constants.HEAD_METHOD);
            final String filePath = preprocessUri(uri);
            responseData.setUrl(filePath);

            final String[] paths = parsePath(filePath.replaceFirst("^storage:/+", StringUtil.EMPTY));
            final String bucketName = paths[0];
            final String path = paths[1];

        FTPClient client = null;
        try {
            responseData.setMethod(Constants.GET_METHOD);

            final FtpInfo ftpInfo = new FtpInfo(uri);
            responseData.setUrl(ftpInfo.toUrl());

            client = getClient(ftpInfo);

            FTPFile file = null;
            client.changeWorkingDirectory(ftpInfo.getParent());
            validateRequest(client);

                && isValidCanonicalUrl(responseData.getUrl(), canonicalUrl)) {
            final Set<RequestData> childUrlSet = new HashSet<>();
            childUrlSet.add(RequestDataBuilder.newRequestData().get().url(canonicalUrl).build());
            logger.info("CANONICAL: {} -> {}", responseData.getUrl(), canonicalUrl);

                        if (!favoriteLogService.addUrl(userCode, (userInfo, favoriteLog) -> {
                            favoriteLog.setUserInfoId(userInfo.getId());
                            favoriteLog.setUrl(favoriteUrl);
                            favoriteLog.setDocId(docId);
                            favoriteLog.setQueryId(queryId);

                            "The content length (" + contentLength + " byte) is over " + maxLength + " byte. The url is " + url);
                }
            }

            responseData.setUrl(url);
            responseData.setCharSet(contentEncoding);
            if (httpRequest instanceof HttpHead) {
                responseData.setMethod(Constants.HEAD_METHOD);
            } else {

            if (arMap.containsKey(accessResult.getUrl())) {
                throw new CrawlerSystemException(accessResult.getUrl() + " already exists.");
            }
            arMap.put(accessResult.getUrl(), accessResult);
        }

    }

    /*
     * (non-Javadoc)
     *

                assertTrue(urlQueue.getUrl() + "=>" + url1, urlQueue.getUrl().startsWith(url1));
            }
            while ((urlQueue = urlQueueService.poll(sessionId2)) != null) {
                assertTrue(urlQueue.getUrl() + "=>" + url2, urlQueue.getUrl().startsWith(url2));
            }

            dataService.iterate(sessionId1, accessResult -> assertTrue(accessResult.getUrl().startsWith(url1)));

            logger.debug("Crawling Access Exception at {}", urlQueue.getUrl(), e);
        } else if (e.isInfoEnabled()) {
            logger.info(e.getMessage());
        } else if (e.isWarnEnabled()) {
            logger.warn("Crawling Access Exception at " + urlQueue.getUrl(), e);
        } else if (e.isErrorEnabled()) {
            logger.error("Crawling Access Exception at " + urlQueue.getUrl(), e);
        }
    }

                    }
                    break;
                default:
                    logger.error("Unknown thumbnail result: {} -> {}", thumbnailId, responseData.getUrl());
                    break;
                }
            } catch (final Throwable t) {
                logger.warn("Failed to create thumbnail: {} -> {} ({}:{})", thumbnailId, responseData.getUrl(),

    }

    @Override
    public ResponseData execute(final RequestData request) {
        return switch (request.getMethod()) {
        case GET -> doGet(request.getUrl());
        case HEAD -> doHead(request.getUrl());
        case POST -> doPost(request.getUrl());
        default -> throw new CrawlerSystemException(request.getMethod() + " method is not supported.");
        };
    }