| /** |
| * 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 org.apache.storm.metric.api; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| public class MultiReducedMetric implements IMetric { |
| Map<String, ReducedMetric> value = new HashMap<>(); |
| IReducer reducer; |
| |
| public MultiReducedMetric(IReducer reducer) { |
| this.reducer = reducer; |
| } |
| |
| public ReducedMetric scope(String key) { |
| ReducedMetric val = value.get(key); |
| if (val == null) { |
| value.put(key, val = new ReducedMetric(reducer)); |
| } |
| return val; |
| } |
| |
| @Override |
| public Map<String, Object> getValueAndReset() { |
| Map<String, Object> ret = new HashMap<>(); |
| for (Map.Entry<String, ReducedMetric> e : value.entrySet()) { |
| Object val = e.getValue().getValueAndReset(); |
| if (val != null) { |
| ret.put(e.getKey(), val); |
| } |
| } |
| return ret; |
| } |
| } |