/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.dianping.cosmos.util;
import org.apache.commons.lang.StringUtils;
public class CatMetricUtil {
private static final String CAT_METRIC_NAME_PREFIX = "Cat#";
/**
* 返回BlackHoleSout的metric名称
* @param topic
* @param group
* @return
*/
public static String getSpoutMetricName(String topic, String group){
return CAT_METRIC_NAME_PREFIX.concat(topic).concat("[").concat(group).concat("]");
}
/**
* 判断是否cat的metirc
* @param dataPointName
* @return
*/
public static boolean isCatMetric(String dataPointName){
if(StringUtils.isBlank(dataPointName)){
return false;
}
return StringUtils.startsWith(dataPointName, CAT_METRIC_NAME_PREFIX);
}
/**
* 根据metric的名字，返回写入cat上的key
* @param spoutMetricName
* @return
*/
public static String getCatMetricKey(String spoutMetricName){
if(StringUtils.isBlank(spoutMetricName)
|| !StringUtils.startsWith(spoutMetricName, CAT_METRIC_NAME_PREFIX)){
return "default";
}
return StringUtils.substringAfter(spoutMetricName, CAT_METRIC_NAME_PREFIX);
}
}