| /** |
| * 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.hadoop.metrics2.sink.timeline.cache; |
| |
| import junit.framework.Assert; |
| import org.apache.hadoop.metrics2.sink.timeline.PostProcessingUtil; |
| import org.apache.hadoop.metrics2.sink.timeline.SingleValuedTimelineMetric; |
| import org.junit.Test; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.TreeMap; |
| |
| public class PostProcessingUtilTest { |
| |
| @Test |
| public void testInterpolateMissinData() throws Exception { |
| |
| Map<Long, Double> metricValues = new TreeMap<Long, Double>(); |
| long interval = 60*1000; |
| |
| long currentTime = System.currentTimeMillis(); |
| |
| for(int i = 10; i>=1;i--) { |
| if (i%4 != 0 && i != 5) { //Skip time points 4,5,8 |
| metricValues.put(currentTime - i*interval, (double)i); |
| } |
| } |
| metricValues = PostProcessingUtil.interpolateMissingData(metricValues, interval); |
| Assert.assertTrue(metricValues.size() == 10); |
| |
| Iterator it = metricValues.entrySet().iterator(); |
| double sum = 0; |
| while (it.hasNext()) { |
| Map.Entry entry = (Map.Entry)it.next(); |
| sum+= (double)entry.getValue(); |
| } |
| Assert.assertEquals(sum, 55.0); |
| } |
| |
| @Test |
| public void testInterpolate() throws Exception { |
| |
| long t2 = System.currentTimeMillis(); |
| long t1 = t2 - 60000; |
| double interpolatedValue; |
| |
| //Test Equal Values |
| interpolatedValue = PostProcessingUtil.interpolate((t1 + 30000), t1, 10.0, t2, 10.0); |
| Assert.assertEquals(interpolatedValue, 10.0); |
| |
| //Test Linear increase Values |
| interpolatedValue = PostProcessingUtil.interpolate((t1 + 30000), t1, 10.0, t2, 20.0); |
| Assert.assertEquals(interpolatedValue, 15.0); |
| |
| //Test Linear decrease Values |
| interpolatedValue = PostProcessingUtil.interpolate((t1 + 30000), t1, 20.0, t2, 10.0); |
| Assert.assertEquals(interpolatedValue, 15.0); |
| |
| //Test interpolation with non mid point time |
| interpolatedValue = PostProcessingUtil.interpolate((t1 + 20000), t1, 15.0, t2, 30.0); // 1:2 ratio |
| Assert.assertEquals(interpolatedValue, 20.0); |
| |
| //Test interpolation with past time |
| interpolatedValue = PostProcessingUtil.interpolate((t1 - 60000), t1, 20.0, t2, 30.0); |
| Assert.assertEquals(interpolatedValue, 10.0); |
| |
| } |
| |
| @Test |
| public void testLinearInterpolate() throws Exception { |
| |
| long t2 = System.currentTimeMillis(); |
| |
| Map<Long, Double> valuesMap = new TreeMap<>(); |
| |
| valuesMap.put(t2 - 4 * 3000, 4.0); |
| valuesMap.put(t2 - 2 * 3000, 2.0); |
| valuesMap.put(t2 - 1 * 3000, 1.0); |
| |
| List<Long> requiredTs = new ArrayList<Long>(); |
| requiredTs.add(t2 - 5*3000); |
| requiredTs.add(t2 - 3*3000); |
| requiredTs.add(t2); |
| |
| Map result = PostProcessingUtil.interpolate(valuesMap, requiredTs); |
| |
| Assert.assertNotNull(result); |
| Assert.assertEquals(result.get(t2 - 5*3000), 5.0); |
| Assert.assertEquals(result.get(t2 - 3*3000), 3.0); |
| Assert.assertEquals(result.get(t2), 0.0); |
| System.out.println(result.toString()); |
| |
| } |
| |
| } |