if (logger.isTraceEnabled()) {
                LogStream.setLevel(4);
            } else if (logger.isDebugEnabled()) {
                LogStream.setLevel(3);
            } else if (logger.isWarnEnabled()) {
                LogStream.setLevel(2);
            } else if (logger.isErrorEnabled()) {
                LogStream.setLevel(1);
            } else {
                LogStream.setLevel(0);
            }

        } else if (cae.isInfoEnabled()) {
            logger.info("[{}] {}", failureUrlId, cae.getMessage());
        } else if (cae.isWarnEnabled()) {
            logger.warn("[{}] Crawling Access Exception at {}", failureUrlId, urlQueue.getUrl(), cae);
        } else if (cae.isErrorEnabled()) {

                    return "3";
                }
                if (logger.isInfoEnabled()) {
                    return "5";
                }
                if (logger.isWarnEnabled()) {
                    return "6";
                }
                if (logger.isErrorEnabled()) {
                    return "7";
                }
                return "0";
            }

                        if (bs.length != 0) {
                            logger.info(new String(bs, outputEncoding));
                        }
                    }
                    if (logger.isWarnEnabled()) {
                        final byte[] bs = errStream.toByteArray();
                        if (bs.length != 0) {
                            logger.warn(new String(bs, outputEncoding));
                        }