| /** |
| * 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.hadoop.fs; |
| |
| import org.apache.commons.lang.math.RandomUtils; |
| import org.apache.hadoop.fs.StorageStatistics.LongStatistic; |
| |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| |
| import org.junit.rules.ExpectedException; |
| import org.junit.rules.Timeout; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.Iterator; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotNull; |
| |
| /** |
| * This tests basic operations of {@link FileSystemStorageStatistics} class. |
| */ |
| public class TestFileSystemStorageStatistics { |
| private static final Logger LOG = LoggerFactory.getLogger( |
| TestFileSystemStorageStatistics.class); |
| private static final String FS_STORAGE_STATISTICS_NAME = "test-fs-statistics"; |
| private static final String[] STATISTICS_KEYS = { |
| "bytesRead", |
| "bytesWritten", |
| "readOps", |
| "largeReadOps", |
| "writeOps", |
| "bytesReadLocalHost", |
| "bytesReadDistanceOfOneOrTwo", |
| "bytesReadDistanceOfThreeOrFour", |
| "bytesReadDistanceOfFiveOrLarger" |
| }; |
| |
| private FileSystem.Statistics statistics = |
| new FileSystem.Statistics("test-scheme"); |
| private FileSystemStorageStatistics storageStatistics = |
| new FileSystemStorageStatistics(FS_STORAGE_STATISTICS_NAME, statistics); |
| |
| @Rule |
| public final Timeout globalTimeout = new Timeout(10 * 1000); |
| @Rule |
| public final ExpectedException exception = ExpectedException.none(); |
| |
| @Before |
| public void setup() { |
| statistics.incrementBytesRead(RandomUtils.nextInt(100)); |
| statistics.incrementBytesWritten(RandomUtils.nextInt(100)); |
| statistics.incrementLargeReadOps(RandomUtils.nextInt(100)); |
| statistics.incrementWriteOps(RandomUtils.nextInt(100)); |
| |
| statistics.incrementBytesReadByDistance(0, RandomUtils.nextInt(100)); |
| statistics.incrementBytesReadByDistance(1, RandomUtils.nextInt(100)); |
| statistics.incrementBytesReadByDistance(3, RandomUtils.nextInt(100)); |
| } |
| |
| @Test |
| public void testGetLongStatistics() { |
| Iterator<LongStatistic> iter = storageStatistics.getLongStatistics(); |
| while (iter.hasNext()) { |
| final LongStatistic longStat = iter.next(); |
| assertNotNull(longStat); |
| final long expectedStat = getStatisticsValue(longStat.getName()); |
| LOG.info("{}: FileSystem.Statistics={}, FileSystemStorageStatistics={}", |
| longStat.getName(), expectedStat, longStat.getValue()); |
| assertEquals(expectedStat, longStat.getValue()); |
| } |
| } |
| |
| @Test |
| public void testGetLong() { |
| for (String key : STATISTICS_KEYS) { |
| final long expectedStat = getStatisticsValue(key); |
| final long storageStat = storageStatistics.getLong(key); |
| LOG.info("{}: FileSystem.Statistics={}, FileSystemStorageStatistics={}", |
| key, expectedStat, storageStat); |
| assertEquals(expectedStat, storageStat); |
| } |
| } |
| |
| /** |
| * Helper method to retrieve the specific FileSystem.Statistics value by name. |
| * |
| * Basically, the {@link FileSystemStorageStatistics} should do this |
| * internally in a similar approach. |
| */ |
| private long getStatisticsValue(String name) { |
| switch (name) { |
| case "bytesRead": |
| return statistics.getBytesRead(); |
| case "bytesWritten": |
| return statistics.getBytesWritten(); |
| case "readOps": |
| return statistics.getReadOps(); |
| case "largeReadOps": |
| return statistics.getLargeReadOps(); |
| case "writeOps": |
| return statistics.getWriteOps(); |
| case "bytesReadLocalHost": |
| return statistics.getBytesReadByDistance(0); |
| case "bytesReadDistanceOfOneOrTwo": |
| return statistics.getBytesReadByDistance(1); |
| case "bytesReadDistanceOfThreeOrFour": |
| return statistics.getBytesReadByDistance(3); |
| case "bytesReadDistanceOfFiveOrLarger": |
| return statistics.getBytesReadByDistance(5); |
| default: |
| return 0; |
| } |
| } |
| |
| } |