String errorName;
            final Throwable cause = t.getCause();
            if (cause != null) {
                errorName = cause.getClass().getCanonicalName();
            } else {
                errorName = t.getClass().getCanonicalName();
            }
            final FailureUrl failureUrl = storeFailureUrl(crawlerContext, urlQueue, errorName, t);
            if (failureUrl != null) {

    public static Slf4jConfiguration getConfiguration(ILoggerFactory loggerFactory) {
        String slf4jBinding = loggerFactory.getClass().getCanonicalName();

        try {
            Enumeration<URL> resources =
                    Slf4jConfigurationFactory.class.getClassLoader().getResources(RESOURCE);

            while (resources.hasMoreElements()) {

            }
        }

        if (!jvmOptions.isEmpty()) {
            jvmOptions.stream().filter(StringUtil::isNotBlank).forEach(cmdList::add);
        }

        cmdList.add(ThumbnailGenerator.class.getCanonicalName());

        cmdList.add("--sessionId");
        cmdList.add(sessionId);
        cmdList.add("--numOfThreads");
        cmdList.add(Integer.toString(numOfThreads));
        if (cleanup) {

        try {
            parser.parseArgument(args);
        } catch (final CmdLineException e) {
            System.err.println(e.getMessage());
            System.err.println("java " + Crawler.class.getCanonicalName() + " [options...] arguments...");
            parser.printUsage(System.err);
            return;
        }

        if (logger.isDebugEnabled()) {
            try {