| /** |
| * 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.ozone.freon; |
| |
| import com.codahale.metrics.Timer; |
| import org.apache.commons.lang3.RandomStringUtils; |
| import org.apache.hadoop.fs.FSDataOutputStream; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hdds.cli.HddsVersionProvider; |
| import org.apache.hadoop.hdds.conf.OzoneConfiguration; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import picocli.CommandLine.Command; |
| import picocli.CommandLine.Option; |
| |
| import java.net.URI; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| /** |
| * Directory & File Generator tool to test OM performance. |
| */ |
| @Command(name = "dtsg", |
| aliases = "dfs-tree-generator", |
| description = |
| "Create nested directories and create given number of files in each " + |
| "dir in any dfs compatible file system.", |
| versionProvider = HddsVersionProvider.class, |
| mixinStandardHelpOptions = true, |
| showDefaultValues = true) |
| public class HadoopDirTreeGenerator extends BaseFreonGenerator |
| implements Callable<Void> { |
| |
| private static final Logger LOG = |
| LoggerFactory.getLogger(HadoopDirTreeGenerator.class); |
| |
| @Option(names = {"-r", "--rpath"}, |
| description = "Hadoop FS root path", |
| defaultValue = "o3fs://bucket2.vol2") |
| private String rootPath; |
| |
| @Option(names = {"-d", "--depth"}, |
| description = "Number of directories to be generated recursively", |
| defaultValue = "5") |
| private int depth; |
| |
| @Option(names = {"-c", "--file-count", "--fileCount"}, |
| description = "Number of files to be written in each directory. Full" + |
| " name --fileCount will be removed in later versions.", |
| defaultValue = "2") |
| private int fileCount; |
| |
| @Option(names = {"-g", "--file-size", "--fileSize"}, |
| description = "Generated data size(in bytes) of each file to be " + |
| "written in each directory. Full name --fileSize will be removed " + |
| "in later versions.", |
| defaultValue = "4096") |
| private int fileSizeInBytes; |
| |
| @Option(names = {"-b", "--buffer"}, |
| description = "Size of buffer used to generated the file content.", |
| defaultValue = "1024") |
| private int bufferSize; |
| |
| @Option(names = {"-s", "--span"}, |
| description = |
| "Number of child directories to be created in each directory.", |
| defaultValue = "10") |
| private int span; |
| |
| @Option(names = {"-l", "--name-len", "--nameLen"}, |
| description = |
| "Length of the random name of directory you want to create. Full " + |
| "name --nameLen will be removed in later versions.", |
| defaultValue = "10") |
| private int length; |
| |
| private AtomicLong totalDirsCnt = new AtomicLong(); |
| |
| private Timer timer; |
| |
| private ContentGenerator contentGenerator; |
| |
| private FileSystem fileSystem; |
| |
| @Override |
| public Void call() throws Exception { |
| String s; |
| if (depth <= 0) { |
| s = "Invalid depth value, depth value should be greater than zero!"; |
| print(s); |
| } else if (span <= 0) { |
| s = "Invalid span value, span value should be greater than zero!"; |
| print(s); |
| } else { |
| init(); |
| OzoneConfiguration configuration = createOzoneConfiguration(); |
| fileSystem = FileSystem.get(URI.create(rootPath), configuration); |
| |
| contentGenerator = new ContentGenerator(fileSizeInBytes, bufferSize); |
| timer = getMetrics().timer("file-create"); |
| |
| runTests(this::createDir); |
| } |
| return null; |
| } |
| |
| /* |
| Nested directories will be created like this, |
| suppose you pass depth=3, span=3 and number of tests=1 |
| |
| Directory Structure:- |
| |-- Dir111 |
| | |
| |-- Dir11 --|-- Dir112 |
| | | |
| | |-- Dir113 |
| | |
| | |
| | |-- Dir121 |
| | | |
| Dir1 --|-- Dir12 --|-- Dir122 |
| | | |
| | |-- Dir123 |
| | |
| | |
| | |-- Dir131 |
| | | |
| |-- Dir13 --|-- Dir132 |
| | |
| |-- Dir133 |
| |
| In each directory 'c' number of files with file size in KBs 'g' will be |
| created. |
| */ |
| private void createDir(long counter) throws Exception { |
| String dir = makeDirWithGivenNumberOfFiles(rootPath); |
| if (depth > 1) { |
| createSubDirRecursively(dir, 1, 1); |
| } |
| String message = "Successfully created directories & files. Total Dirs " + |
| "Count=" + totalDirsCnt.get() + ", Total Files Count=" + |
| timer.getCount(); |
| print(message); |
| } |
| |
| private void createSubDirRecursively(String parent, int depthIndex, |
| int spanIndex) |
| throws Exception { |
| if (depthIndex < depth) { |
| String depthSubDir = makeDirWithGivenNumberOfFiles(parent); |
| ++depthIndex; |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("SubDir:{}, depthIndex:{} +", depthSubDir, depthIndex); |
| } |
| // only non-leaf nodes will be iterated recursively.. |
| if (depthIndex < depth) { |
| createSubDirRecursively(depthSubDir, depthIndex, spanIndex); |
| } |
| } |
| |
| while(spanIndex < span) { |
| String levelSubDir = makeDirWithGivenNumberOfFiles(parent); |
| ++spanIndex; |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("SpanSubDir:{}, depthIndex:{}, spanIndex:{} +", levelSubDir, |
| depthIndex, spanIndex); |
| } |
| // only non-leaf nodes will be iterated recursively.. |
| if (depthIndex < depth) { |
| createSubDirRecursively(levelSubDir, depthIndex, 1); |
| } |
| } |
| } |
| |
| private String makeDirWithGivenNumberOfFiles(String parent) |
| throws Exception { |
| String dir = RandomStringUtils.randomAlphanumeric(length); |
| dir = parent.toString().concat("/").concat(dir); |
| fileSystem.mkdirs(new Path(dir)); |
| totalDirsCnt.incrementAndGet(); |
| // Add given number of files into the created directory. |
| createFiles(dir); |
| return dir; |
| } |
| |
| private void createFile(String dir, long counter) throws Exception { |
| String fileName = dir.concat("/").concat(RandomStringUtils. |
| randomAlphanumeric(length)); |
| Path file = new Path(fileName); |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("FilePath:{}", file); |
| } |
| timer.time(() -> { |
| try (FSDataOutputStream output = fileSystem.create(file)) { |
| contentGenerator.write(output); |
| } |
| return null; |
| }); |
| } |
| |
| private void createFiles(String dir) throws Exception { |
| for (int i = 0; i < fileCount; i++) { |
| createFile(dir, i); |
| } |
| } |
| } |