| /** |
| * 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 |
| * <p/> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p/> |
| * 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.internal; |
| |
| import java.util.Map; |
| import junit.framework.TestCase; |
| import org.junit.Test; |
| |
| /** |
| * Unit test for LatencyStat |
| */ |
| public class LatencyStatTest extends TestCase { |
| final long TEN_MIN = 10 * 60 * 1000; |
| final long THIRTY_SEC = 30 * 1000; |
| final long THREE_HOUR = 3 * 60 * 60 * 1000; |
| final long ONE_DAY = 24 * 60 * 60 * 1000; |
| |
| @Test |
| public void testBasic() { |
| long time = 0l; |
| LatencyStat lat = new LatencyStat(10, time); |
| while (time < TEN_MIN) { |
| lat.record(100); |
| time += THIRTY_SEC; |
| assertEquals(100.0, ((Double) lat.getValueAndReset(time)).doubleValue(), 0.01); |
| } |
| |
| Map<String, Double> found = lat.getTimeLatAvg(time); |
| assertEquals(4, found.size()); |
| assertEquals(100.0, found.get("600").doubleValue(), 0.01); |
| assertEquals(100.0, found.get("10800").doubleValue(), 0.01); |
| assertEquals(100.0, found.get("86400").doubleValue(), 0.01); |
| assertEquals(100.0, found.get(":all-time").doubleValue(), 0.01); |
| |
| while (time < THREE_HOUR) { |
| lat.record(200); |
| time += THIRTY_SEC; |
| assertEquals(200.0, ((Double) lat.getValueAndReset(time)).doubleValue(), 0.01); |
| } |
| |
| double expected = ((100.0 * TEN_MIN / THIRTY_SEC) + (200.0 * (THREE_HOUR - TEN_MIN) / THIRTY_SEC)) / |
| (THREE_HOUR / THIRTY_SEC); |
| found = lat.getTimeLatAvg(time); |
| assertEquals(4, found.size()); |
| assertEquals(200.0, found.get("600").doubleValue(), 0.01); //flushed the buffers completely |
| assertEquals(expected, found.get("10800").doubleValue(), 0.01); |
| assertEquals(expected, found.get("86400").doubleValue(), 0.01); |
| assertEquals(expected, found.get(":all-time").doubleValue(), 0.01); |
| |
| while (time < ONE_DAY) { |
| lat.record(300); |
| time += THIRTY_SEC; |
| assertEquals(300.0, ((Double) lat.getValueAndReset(time)).doubleValue(), 0.01); |
| } |
| |
| expected = ((100.0 * TEN_MIN / THIRTY_SEC) + (200.0 * (THREE_HOUR - TEN_MIN) / THIRTY_SEC) + |
| (300.0 * (ONE_DAY - THREE_HOUR) / THIRTY_SEC)) / |
| (ONE_DAY / THIRTY_SEC); |
| found = lat.getTimeLatAvg(time); |
| assertEquals(4, found.size()); |
| assertEquals(300.0, found.get("600").doubleValue(), 0.01); //flushed the buffers completely |
| assertEquals(300.0, found.get("10800").doubleValue(), 0.01); |
| assertEquals(expected, found.get("86400").doubleValue(), 0.01); |
| assertEquals(expected, found.get(":all-time").doubleValue(), 0.01); |
| } |
| } |