final IndexingHelper indexingHelper = ComponentUtil.getIndexingHelper();
            final SearchEngineClient searchEngineClient = ComponentUtil.getSearchEngineClient();

            final String url = urlQueue.getUrl();
            ResponseData responseData = null;
            try {

    }

    public static DataService<EsAccessResult> getDataService() {
        return getComponent(DATA_SERVICE);
    }

    public static SearchEngineClient getSearchEngineClient() {
        return getComponent(SEARCH_ENGINE_CLIENT);
    }

    public static FessConfig getFessConfig() {
        if (fessConfig != null) {
            return fessConfig;
        }

        if (!acceptHttpMethod(request, GET)) {
            return;
        }

        final SearchEngineClient searchEngineClient = ComponentUtil.getSearchEngineClient();
        try {
            final PingResponse pingResponse = searchEngineClient.ping();
            writeJsonResponse(pingResponse.getStatus() == 0 ? HttpServletResponse.SC_OK : HttpServletResponse.SC_SERVICE_UNAVAILABLE,

        final String[] crawlerIndices = { ".crawler.data", //
                ".crawler.filter", //
                ".crawler.queue", //
        };
        final SearchEngineClient client = ComponentUtil.getSearchEngineClient();
        for (final String index : configIndices) {
            final String oldIndex = "." + index;
            if (client.existsIndex(oldIndex) && client.existsIndex(index)) {