com.dianping.cat.Cat#logError

Source File: CatAopService.java From piggymetrics with MIT License

6 votes

@Around("@annotation(CatAnnotation)")
public Object aroundMethod(ProceedingJoinPoint pjp) {
	MethodSignature joinPointObject = (MethodSignature) pjp.getSignature();
	Method method = joinPointObject.getMethod();

	Transaction t = Cat.newTransaction("method", method.getName());

	try {
		Object obj = pjp.proceed();

		t.setSuccessStatus();
		return obj;
	} catch (Throwable e) {
		t.setStatus(e);
		Cat.logError(e);
		throw new RuntimeException("Exception thrown by CAT aop", e);
	} finally {
		t.complete();
	}
}

Source File: CatAopService.java From piggymetrics with MIT License

6 votes

@Around("@annotation(CatAnnotation)")
public Object aroundMethod(ProceedingJoinPoint pjp) {
	MethodSignature joinPointObject = (MethodSignature) pjp.getSignature();
	Method method = joinPointObject.getMethod();

	Transaction t = Cat.newTransaction("method", method.getName());

	try {
		Object obj = pjp.proceed();

		t.setSuccessStatus();
		return obj;
	} catch (Throwable e) {
		t.setStatus(e);
		Cat.logError(e);
		throw new RuntimeException("Exception thrown by CAT aop", e);
	} finally {
		t.complete();
	}
}

Source File: CatFilter.java From Zebra with Apache License 2.0

6 votes

@Override
public int executeShardUpdate(ShardStatement source, String sql, int autoGeneratedKeys, int[] columnIndexes,
      String[] columnNames, JdbcFilter chain) throws SQLException {
	SqlAliasManager.setSqlAlias(sql);
	Transaction t = Cat.newTransaction(SHARD_CAT_TYPE, SqlAliasManager.getSqlAlias());
	int result;
	try {
		result = chain.executeShardUpdate(source, sql, autoGeneratedKeys, columnIndexes, columnNames, chain);
		t.setStatus(Message.SUCCESS);
	} catch (Throwable exp) {
		Cat.logError(exp);
		t.setStatus(exp);
		throw new SQLException(exp);
	} finally {
		t.complete();
	}
	return result;
}

Source File: CatFilter.java From Zebra with Apache License 2.0

6 votes

@Override
public SingleConnection getSingleConnection(SingleDataSource source, JdbcFilter chain) throws SQLException {
	Transaction t = null;
	try {
		t = Cat.newTransaction("SQL.Conn", source.getConfig().getId());
		SingleConnection conn = chain.getSingleConnection(source, chain);
		t.setStatus(Transaction.SUCCESS);
		return conn;
	} catch (SQLException exp) {
		Transaction sqlTransaction = Cat.newTransaction("SQL", DaoContextHolder.getSqlName());
		try {
			Cat.logEvent("SQL.Database", source.getConfig().getJdbcUrl(), "ERROR", source.getConfig().getId());
			Cat.logError(exp);
			sqlTransaction.setStatus(exp);
		} finally {
			sqlTransaction.complete();
		}
		throw exp;
	} finally {
		if (t != null) {
			t.complete();
		}
	}
}

Source File: CatAppender4Log4j2.java From x-pipe with Apache License 2.0

6 votes

private void logError(LogEvent event) {
	
	Throwable info = event.getThrown();
	
	if (info != null) {
		Throwable exception = info;
		Object message = event.getMessage();
		String extra = ExceptionUtils.extractExtraMessage(info);

		String logMessage = StringUtil.join(",", message, extra);
		
		if (!StringUtil.isEmpty(logMessage)) {
			Cat.logError(logMessage, exception);
		} else {
			Cat.logError(exception);
		}
	}
}

Source File: CatAopService.java From piggymetrics with MIT License

6 votes

@Around("@annotation(CatAnnotation)")
public Object aroundMethod(ProceedingJoinPoint pjp) {
	MethodSignature joinPointObject = (MethodSignature) pjp.getSignature();
	Method method = joinPointObject.getMethod();

	Transaction t = Cat.newTransaction("method", method.getName());

	try {
		Object obj = pjp.proceed();

		t.setSuccessStatus();
		return obj;
	} catch (Throwable e) {
		t.setStatus(e);
		Cat.logError(e);
		throw new RuntimeException("Exception thrown by CAT aop", e);
	} finally {
		t.complete();
	}
}

Source File: ConfigSubscriber.java From AsuraFramework with Apache License 2.0

5 votes

/**
 * 初始化zk连接
 *
 * @author zhangshaobin
 * @created 2013-6-26 上午10:21:34
 */
private void init() {
    applicationName = DynamicPropertyFactory.getInstance().getStringProperty(CommonConstant.CONFIG_APPLICATION_NAME_KEY, null).get();
    String zkConfigEnsemble = DynamicPropertyFactory.getInstance().getStringProperty(CommonConstant.ZK_ENSEMABLE_KEY, null).get();
    Integer zkConfigSessionTimeout = DynamicPropertyFactory.getInstance().getIntProperty(CommonConstant.ZK_SESSION_TIMEOUT_KEY, 15000).get();
    Integer zkConfigConnTimeout = DynamicPropertyFactory.getInstance().getIntProperty(CommonConstant.ZK_CONN_TIMEOUT_KEY, 5000).get();

    Transaction tran = Cat.newTransaction("Asura Configuration init", applicationName + "_" + zkConfigEnsemble);

    try {

        if (Check.NuNStr(zkConfigEnsemble)) {
            logger.warn("ZooKeeper configuration running in file mode, zk is not enabled since not configured");
            Cat.logError("zk is not enabled since not configured", new RuntimeException("ZooKeeper located at " + zkConfigEnsemble + " is not started."));
            return;
        }

        client = createAndStartZKClient(zkConfigEnsemble, zkConfigSessionTimeout, zkConfigConnTimeout);

        if (client.getState() != CuratorFrameworkState.STARTED) {
            throw new RuntimeException("ZooKeeper located at " + zkConfigEnsemble + " is not started.");
        }

        tran.setStatus(Transaction.SUCCESS);
    } catch (Exception e) {
        logger.error("连接配置中心服务器超时，时间5000毫秒。", e);
        Cat.logError("asura configuration init exception", e);
        tran.setStatus(e);
        System.exit(1);
    } finally {
        tran.complete();
    }
    logger.info(new SimpleDateFormat("[yyyy-MM-dd HH:mm:ss] ").format(new Date()) + applicationName + " connected to cofnig server(" + zkConfigEnsemble + ").");
    logger.info(applicationName + " connected to cofnig server(" + zkConfigEnsemble + ").");
}

Source File: DefaultProducer.java From hermes with Apache License 2.0

5 votes

@Override
public Future<SendResult> send() {
	Transaction t = null;
	if (m_config.isCatEnabled()) {
		t = Cat.newTransaction(CatConstants.TYPE_MESSAGE_PRODUCE_TRIED, m_msg.getTopic());
	}
	try {
		Topic topic = m_metaService.findTopicByName(m_msg.getTopic());

		if (topic == null) {
			log.error("Topic {} not found.", m_msg.getTopic());
			throw new IllegalArgumentException(String.format("Topic %s not found.", m_msg.getTopic()));
		}

		if (Storage.KAFKA.equals(topic.getStorageType())) {
			m_msg.setWithCatTrace(false);
		}
		m_msg.setBornTime(m_systemClockService.now());
		Future<SendResult> future = m_pipeline.put(m_msg);

		if (t != null) {
			t.setStatus(Transaction.SUCCESS);
		}
		return future;
	} catch (Exception e) {
		if (t != null) {
			Cat.logError(e);
			t.setStatus(e);
		}
		throw e;
	} finally {
		if (t != null) {
			t.complete();
		}
	}
}

Source File: CatServletFilter.java From piggymetrics with MIT License

5 votes

@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {

    HttpServletRequest request = (HttpServletRequest) servletRequest;

    String url = request.getRequestURL().toString();
    for (String urlPattern : urlPatterns) {
        if (url.startsWith(urlPattern)) {
            url = urlPattern;
        }
    }

    CatContext catContext = new CatContext();
    catContext.addProperty(Cat.Context.ROOT, request.getHeader(CatHttpConstants.CAT_HTTP_HEADER_ROOT_MESSAGE_ID));
    catContext.addProperty(Cat.Context.PARENT, request.getHeader(CatHttpConstants.CAT_HTTP_HEADER_PARENT_MESSAGE_ID));
    catContext.addProperty(Cat.Context.CHILD, request.getHeader(CatHttpConstants.CAT_HTTP_HEADER_CHILD_MESSAGE_ID));
    Cat.logRemoteCallServer(catContext);
    
    Transaction t = Cat.newTransaction("Service", url);

    try {

        Cat.logEvent("Service.method", request.getMethod(), Message.SUCCESS, request.getRequestURL().toString());
        Cat.logEvent("Service.client", request.getRemoteHost());

        filterChain.doFilter(servletRequest, servletResponse);

        t.setStatus(Transaction.SUCCESS);
    } catch (Exception ex) {
        t.setStatus(ex);
        Cat.logError(ex);
        throw ex;
    } finally {
        t.complete();
    }
}

Source File: CatServletFilter.java From piggymetrics with MIT License

5 votes

@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {

    HttpServletRequest request = (HttpServletRequest) servletRequest;

    String url = request.getRequestURL().toString();
    for (String urlPattern : urlPatterns) {
        if (url.startsWith(urlPattern)) {
            url = urlPattern;
        }
    }

    CatContext catContext = new CatContext();
    catContext.addProperty(Cat.Context.ROOT, request.getHeader(CatHttpConstants.CAT_HTTP_HEADER_ROOT_MESSAGE_ID));
    catContext.addProperty(Cat.Context.PARENT, request.getHeader(CatHttpConstants.CAT_HTTP_HEADER_PARENT_MESSAGE_ID));
    catContext.addProperty(Cat.Context.CHILD, request.getHeader(CatHttpConstants.CAT_HTTP_HEADER_CHILD_MESSAGE_ID));
    Cat.logRemoteCallServer(catContext);
    
    Transaction t = Cat.newTransaction("Service", url);

    try {

        Cat.logEvent("Service.method", request.getMethod(), Message.SUCCESS, request.getRequestURL().toString());
        Cat.logEvent("Service.client", request.getRemoteHost());

        filterChain.doFilter(servletRequest, servletResponse);

        t.setStatus(Transaction.SUCCESS);
    } catch (Exception ex) {
        t.setStatus(ex);
        Cat.logError(ex);
        throw ex;
    } finally {
        t.complete();
    }
}

Source File: RabbitMqSendClient.java From AsuraFramework with Apache License 2.0

5 votes

private void sendQueue(QueueName queueName, RabbitMessage rm) throws Exception {
    if (rm == null || queueName == null) {
        return;
    }
    initQueueChannel();
    String _queueName = queueName.getNameByEnvironment(environment);
    Transaction trans = Cat.newTransaction("RabbitMQ Message", "PUBLISH-QUEUE-" + _queueName);
    Cat.logEvent("mq send queue", _queueName, Event.SUCCESS,rm.toJsonStr());
    try {
        queueChannel.queueDeclare(_queueName, true, false, false, null);
        queueChannel.basicPublish("", _queueName, MessageProperties.PERSISTENT_TEXT_PLAIN, rm.toJsonStr().getBytes("UTF-8"));
        if (LOGGER.isInfoEnabled()) {
            LOGGER.info("SEND SUCCESS:[queue:{},message:{}]", _queueName, rm.toJsonStr());
        }
        Cat.logMetricForCount("PUBLISH-QUEUE-" + _queueName); // 统计请求次数, 可以查看对应队列中放入了多少信息
        trans.setStatus(Transaction.SUCCESS);
    } catch (Exception e) {
        if (LOGGER.isErrorEnabled()) {
            LOGGER.error("SEND ERROR:[queue:{},message:{},exception:{}]", _queueName, rm.toJsonStr(), e);
        }
        String err = queueName + "  rabbitmq发送消息异常";
        Cat.logError(err, e);
        trans.setStatus(e);
        throw new AsuraRabbitMqException(err, e);
    } finally {
        trans.complete();
    }
}

Source File: EchoClientStarter.java From x-pipe with Apache License 2.0

5 votes

private static void doConnect(String host, int port, String protocol, int speed) {
    AdvancedEchoClient client = new AdvancedEchoClient(host, port, protocol, speed);

    Cat.logEvent("Start", System.nanoTime()+"");
    try {
        client.startServer().channel().closeFuture().sync();
    } catch (InterruptedException e) {
        e.printStackTrace();
        logger.error("[doConnect]", e);
        Cat.logError("ReConnected", e);
    } finally {
        scheduled.schedule(()->doConnect(host, port, protocol, speed), 1, TimeUnit.MINUTES);
    }

}

Source File: CatServletFilter.java From cat_lab with MIT License

5 votes

@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {

    HttpServletRequest request = (HttpServletRequest) servletRequest;

    String url = request.getRequestURL().toString();
    for (String urlPattern : urlPatterns) {
        if (url.startsWith(urlPattern)) {
            url = urlPattern;
        }
    }

    CatContext catContext = new CatContext();
    catContext.addProperty(Cat.Context.ROOT, request.getHeader(CatHttpConstants.CAT_HTTP_HEADER_ROOT_MESSAGE_ID));
    catContext.addProperty(Cat.Context.PARENT, request.getHeader(CatHttpConstants.CAT_HTTP_HEADER_PARENT_MESSAGE_ID));
    catContext.addProperty(Cat.Context.CHILD, request.getHeader(CatHttpConstants.CAT_HTTP_HEADER_CHILD_MESSAGE_ID));
    Cat.logRemoteCallServer(catContext);
    
    Transaction t = Cat.newTransaction(CatConstants.TYPE_SERVICE, url);

    try {

        Cat.logEvent("Service.method", request.getMethod(), Message.SUCCESS, request.getRequestURL().toString());
        Cat.logEvent("Service.client", request.getRemoteHost());

        filterChain.doFilter(servletRequest, servletResponse);

        t.setStatus(Transaction.SUCCESS);
    } catch (Exception ex) {
        t.setStatus(ex);
        Cat.logError(ex);
        throw ex;
    } finally {
        t.complete();
    }
}

Source File: MobileExecuteRoute.java From s2g-zuul with MIT License

5 votes

@Override
public void run() {
	try {
		final CloseableHttpClient hc = clientRef.get();
		if (hc == null)
			return;
		hc.getConnectionManager().closeExpiredConnections();
	} catch (Throwable t) {
		Cat.logError("error closing expired connections", t);
	}
}

Source File: CatServletFilter.java From s2g-zuul with MIT License

5 votes

@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {

    HttpServletRequest request = (HttpServletRequest) servletRequest;

    String url = request.getRequestURL().toString();
    for (String urlPattern : urlPatterns) {
        if (url.startsWith(urlPattern)) {
            url = urlPattern;
        }
    }

   Transaction t = Cat.newTransaction("Service", url);

    try {

        PropertyContext propertyContext = new PropertyContext();
        propertyContext.addProperty(Cat.Context.ROOT, request.getHeader(Constants.CAT_ROOT_MESSAGE_ID));
        propertyContext.addProperty(Cat.Context.PARENT, request.getHeader(Constants.CAT_PARENT_MESSAGE_ID));
        propertyContext.addProperty(Cat.Context.CHILD, request.getHeader(Constants.CAT_CHILD_MESSAGE_ID));
        Cat.logRemoteCallServer(propertyContext);

        Cat.logEvent("Service.method", request.getMethod(), Message.SUCCESS, request.getRequestURL().toString());
        Cat.logEvent("Service.client", request.getRemoteHost());

        filterChain.doFilter(servletRequest, servletResponse);

        t.setStatus(Transaction.SUCCESS);
    } catch (Exception ex) {
        t.setStatus(ex);
        Cat.logError(ex);
        throw ex;
    } finally {
        t.complete();
    }
}

Source File: SyncZuulServlet.java From s2g-zuul with MIT License

5 votes

/**
 * sets error context info and executes "error" filters
 *
 * @param e
 * @throws ZuulException
 */
void error(ZuulException e) {
	try {
		RequestContext.getCurrentContext().setThrowable(e);
		zuulRunner.error();
	} catch (Throwable t) {
		Cat.logError(t);
		LOGGER.error(e.getMessage(), e);
	}finally{
		Cat.logError(e);
	}
}

Source File: CatServletFilter.java From cat_lab with MIT License

5 votes

@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {

    HttpServletRequest request = (HttpServletRequest) servletRequest;

    String url = request.getRequestURL().toString();
    for (String urlPattern : urlPatterns) {
        if (url.startsWith(urlPattern)) {
            url = urlPattern;
        }
    }

    CatContext catContext = new CatContext();
    catContext.addProperty(Cat.Context.ROOT, request.getHeader(CatHttpConstants.CAT_HTTP_HEADER_ROOT_MESSAGE_ID));
    catContext.addProperty(Cat.Context.PARENT, request.getHeader(CatHttpConstants.CAT_HTTP_HEADER_PARENT_MESSAGE_ID));
    catContext.addProperty(Cat.Context.CHILD, request.getHeader(CatHttpConstants.CAT_HTTP_HEADER_CHILD_MESSAGE_ID));
    Cat.logRemoteCallServer(catContext);
    
    Transaction t = Cat.newTransaction(CatConstants.TYPE_SERVICE, url);
    try {

        Cat.logEvent("Service.method", request.getMethod(), Message.SUCCESS, request.getRequestURL().toString());
        Cat.logEvent("Service.client", request.getRemoteHost());

        filterChain.doFilter(servletRequest, servletResponse);

        t.setStatus(Transaction.SUCCESS);
    } catch (Exception ex) {
        t.setStatus(ex);
        Cat.logError(ex);
        throw ex;
    } finally {
        t.complete();
    }
}

Source File: CatServletFilter.java From cat_lab with MIT License

5 votes

@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {

    HttpServletRequest request = (HttpServletRequest) servletRequest;

    String url = request.getRequestURL().toString();
    for (String urlPattern : urlPatterns) {
        if (url.startsWith(urlPattern)) {
            url = urlPattern;
        }
    }

    CatContext catContext = new CatContext();
    catContext.addProperty(Cat.Context.ROOT, request.getHeader(CatHttpConstants.CAT_HTTP_HEADER_ROOT_MESSAGE_ID));
    catContext.addProperty(Cat.Context.PARENT, request.getHeader(CatHttpConstants.CAT_HTTP_HEADER_PARENT_MESSAGE_ID));
    catContext.addProperty(Cat.Context.CHILD, request.getHeader(CatHttpConstants.CAT_HTTP_HEADER_CHILD_MESSAGE_ID));
    Cat.logRemoteCallServer(catContext);
    
    Transaction t = Cat.newTransaction(CatConstants.TYPE_URL, url);

    try {

        Cat.logEvent("Service.method", request.getMethod(), Message.SUCCESS, request.getRequestURL().toString());
        Cat.logEvent("Service.client", request.getRemoteHost());

        filterChain.doFilter(servletRequest, servletResponse);

        t.setStatus(Transaction.SUCCESS);
    } catch (Exception ex) {
        t.setStatus(ex);
        Cat.logError(ex);
        throw ex;
    } finally {
        t.complete();
    }
}

Source File: MobileExecuteRoute.java From s2g-zuul with MIT License

4 votes

@Override
public Object run() throws ZuulException {
	Transaction tran = Cat.getProducer().newTransaction("Filter", "ExecuteRoute");
	RequestContext ctx = RequestContext.getCurrentContext();
	HttpServletRequest request = ctx.getRequest();
	String url = ctx.getRouteUrl().toString();
	String groupName = null;
	String routeName = null;

	try {
		Cat.logEvent("route.url", url);
		HttpClient httpclient = clientRef.get();
		Collection<Header> headers = buildZuulRequestHeaders(request);
		InputStream requestEntity = getRequestBody(request);
		int contentLength = request.getContentLength();
		groupName = ctx.getRouteGroup();
		routeName = ctx.getRouteName();

		if (groupName == null)
			groupName = Constants.DEFAULT_GROUP;
		if (routeName == null)
			routeName = Constants.DEFAULT_NAME;
		RequestConfig requestConfig = buildRequestConfig(routeName, groupName);
		String verb = request.getMethod().toUpperCase();

		HttpResponse response = forward(httpclient, requestConfig, verb, url, headers, requestEntity, contentLength,
				groupName, routeName);
		setResponse(response);
		tran.setStatus(Transaction.SUCCESS);

	} catch (Exception e) {
		tran.setStatus(e);
		String originUrl = getOriginatingURL();
		String targetUrl = url;
		String targetIp = "unknown";
		try {
			targetIp = InetAddress.getByName(ctx.getRouteUrl().getHost()).getHostAddress();
		} catch (Exception ignore) { }

		Exception ex = e;
		//String errorMsg =String.format("[${ex.class.simpleName}]{${ex.message}}   ");
		String errorMsg =String.format("[%s]{%s}   ",ex.getClass().getSimpleName(),ex.getMessage());
		Throwable cause = null;
		while ((cause = ex.getCause()) != null) {
			ex = (Exception) cause;
			//errorMsg = "${errorMsg}[${ex.class.simpleName}]{${ex.message}}   ";
			errorMsg += String.format("[%s]{%s}   ",ex.getClass().getSimpleName(),ex.getMessage());
		}

		//Cat.logError("Service Execution Error,OriginUrl: ${originUrl}\nTargetUrl: ${targetUrl}\nTargetIp: ${targetIp}\nCause: ${errorMsg}", e);
		Cat.logError(String.format("Service Execution Error,OriginUrl: %s\nTargetUrl: %s\nTargetIp: %s\nCause: %s\n,groupName:%s\n,routeName:%s",originUrl,targetUrl,targetIp,errorMsg,groupName,routeName), e);
		//throw new ZuulException(errorMsg,500, "TargetUrl: ${targetUrl}\nCause: ${errorMsg}");
		throw new ZuulException(errorMsg,500, String.format("TargetUrl: %s\nCause: %s",targetUrl,errorMsg));
	} finally {
		tran.complete();
	}

	return null;
}

Source File: BaseMessageListener.java From hermes with Apache License 2.0

4 votes

@Override
public void onMessage(List<ConsumerMessage<T>> msgs) {
	if (msgs != null && !msgs.isEmpty()) {
		String topic = msgs.get(0).getTopic();

		for (ConsumerMessage<T> msg : msgs) {
			Transaction t = Cat.newTransaction(CatConstants.TYPE_MESSAGE_CONSUMED, topic + ":" + m_groupId);
			MessageTree tree = Cat.getManager().getThreadLocalMessageTree();

			if (msg instanceof PropertiesHolderAware) {
				PropertiesHolder holder = ((PropertiesHolderAware) msg).getPropertiesHolder();
				String rootMsgId = holder.getDurableSysProperty(CatConstants.ROOT_MESSAGE_ID);
				String parentMsgId = holder.getDurableSysProperty(CatConstants.CURRENT_MESSAGE_ID);

				tree.setRootMessageId(rootMsgId);
				tree.setParentMessageId(parentMsgId);
			}

			try {
				t.addData("topic", topic);
				t.addData("key", msg.getRefKey());
				t.addData("groupId", m_groupId);

				setOnMessageStartTime(msg);
				onMessage(msg);
				setOnMessageEndTime(msg);
				// by design, if nacked, no effect
				msg.ack();

				String ip = NetworkInterfaceManager.INSTANCE.getLocalHostAddress();
				Cat.logEvent("Consumer:" + ip, msg.getTopic() + ":" + m_groupId, Event.SUCCESS, "key=" + msg.getRefKey());
				Cat.logEvent("Message:" + topic, "Consumed:" + ip, Event.SUCCESS, "key=" + msg.getRefKey());
				Cat.logMetricForCount(msg.getTopic());
				t.setStatus(MessageStatus.SUCCESS.equals(msg.getStatus()) ? Transaction.SUCCESS : "FAILED-WILL-RETRY");
			} catch (Exception e) {
				Cat.logError(e);
				t.setStatus(e);
				log.error("Exception occurred while calling onMessage.", e);
				msg.nack();
			} finally {
				t.complete();
			}
		}

	}
}

Java Code Examples for com.dianping.cat.Cat#logError()