| /** |
| * 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.alibaba.jstorm.common.metric.old; |
| |
| import com.alibaba.jstorm.common.metric.old.operator.convert.DefaultConvertor; |
| import com.alibaba.jstorm.common.metric.old.operator.merger.SumMerger; |
| import com.alibaba.jstorm.common.metric.old.operator.updater.AddUpdater; |
| import com.alibaba.jstorm.common.metric.old.window.Metric; |
| |
| /** |
| * The class is similar to com.codahale.metrics.Counter |
| * |
| * Sum all window's value |
| * |
| * how to use Counter , please refer to Sampling Interface |
| * |
| * @author zhongyan.feng |
| * |
| * @param <T> |
| */ |
| public class Counter<T extends Number> extends Metric<T, T> { |
| private static final long serialVersionUID = -1362345159511508074L; |
| |
| public Counter(T zero) { |
| updater = new AddUpdater<T>(); |
| merger = new SumMerger<T>(); |
| convertor = new DefaultConvertor<T>(); |
| defaultValue = zero; |
| |
| init(); |
| } |
| |
| public static void main(String[] args) { |
| |
| } |
| } |