[120] | 1 | /** |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
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| 3 | * or more contributor license agreements. See the NOTICE file |
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| 4 | * distributed with this work for additional information |
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| 5 | * regarding copyright ownership. The ASF licenses this file |
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| 6 | * to you under the Apache License, Version 2.0 (the |
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| 7 | * "License"); you may not use this file except in compliance |
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| 8 | * with the License. You may obtain a copy of the License at |
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| 9 | * |
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| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 11 | * |
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| 12 | * Unless required by applicable law or agreed to in writing, software |
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| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 15 | * See the License for the specific language governing permissions and |
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| 16 | * limitations under the License. |
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| 17 | */ |
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| 18 | package org.apache.hadoop.tools; |
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| 19 | |
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| 20 | import java.io.ByteArrayOutputStream; |
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| 21 | import java.io.DataOutputStream; |
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| 22 | import java.io.IOException; |
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| 23 | import java.io.PrintStream; |
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| 24 | import java.util.Arrays; |
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| 25 | import java.util.LinkedList; |
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| 26 | import java.util.List; |
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| 27 | import java.util.Random; |
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| 28 | |
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| 29 | import org.apache.commons.logging.LogFactory; |
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| 30 | import org.apache.commons.logging.impl.Log4JLogger; |
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| 31 | import org.apache.hadoop.conf.Configuration; |
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| 32 | import org.apache.hadoop.fs.FileStatus; |
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| 33 | import org.apache.hadoop.fs.FileSystem; |
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| 34 | import org.apache.hadoop.fs.FsShell; |
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| 35 | import org.apache.hadoop.fs.Path; |
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| 36 | import org.apache.hadoop.fs.permission.FsPermission; |
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| 37 | import org.apache.hadoop.fs.permission.PermissionStatus; |
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| 38 | import org.apache.hadoop.hdfs.MiniDFSCluster; |
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| 39 | import org.apache.hadoop.hdfs.server.datanode.DataNode; |
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| 40 | import org.apache.hadoop.hdfs.server.namenode.FSNamesystem; |
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| 41 | import org.apache.hadoop.io.IOUtils; |
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| 42 | import org.apache.hadoop.mapred.MiniMRCluster; |
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| 43 | import org.apache.hadoop.mapred.TaskTracker; |
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| 44 | import org.apache.log4j.Level; |
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| 45 | |
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| 46 | public class TestDistCh extends junit.framework.TestCase { |
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| 47 | { |
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| 48 | ((Log4JLogger)LogFactory.getLog("org.apache.hadoop.hdfs.StateChange") |
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| 49 | ).getLogger().setLevel(Level.OFF); |
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| 50 | ((Log4JLogger)DataNode.LOG).getLogger().setLevel(Level.OFF); |
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| 51 | ((Log4JLogger)FSNamesystem.LOG).getLogger().setLevel(Level.OFF); |
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| 52 | ((Log4JLogger)TaskTracker.LOG).getLogger().setLevel(Level.OFF); |
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| 53 | } |
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| 54 | |
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| 55 | static final Long RANDOM_NUMBER_GENERATOR_SEED = null; |
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| 56 | |
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| 57 | private static final Random RANDOM = new Random(); |
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| 58 | static { |
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| 59 | final long seed = RANDOM_NUMBER_GENERATOR_SEED == null? |
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| 60 | RANDOM.nextLong(): RANDOM_NUMBER_GENERATOR_SEED; |
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| 61 | System.out.println("seed=" + seed); |
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| 62 | RANDOM.setSeed(seed); |
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| 63 | } |
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| 64 | |
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| 65 | static final String TEST_ROOT_DIR = |
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| 66 | new Path(System.getProperty("test.build.data","/tmp") |
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| 67 | ).toString().replace(' ', '+'); |
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| 68 | |
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| 69 | static final int NUN_SUBS = 5; |
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| 70 | |
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| 71 | static class FileTree { |
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| 72 | private final FileSystem fs; |
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| 73 | private final String root; |
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| 74 | private final Path rootdir; |
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| 75 | private int fcount = 0; |
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| 76 | |
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| 77 | Path createSmallFile(Path dir) throws IOException { |
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| 78 | final Path f = new Path(dir, "f" + ++fcount); |
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| 79 | assertTrue(!fs.exists(f)); |
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| 80 | final DataOutputStream out = fs.create(f); |
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| 81 | try { |
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| 82 | out.writeBytes("createSmallFile: f=" + f); |
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| 83 | } finally { |
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| 84 | out.close(); |
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| 85 | } |
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| 86 | assertTrue(fs.exists(f)); |
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| 87 | return f; |
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| 88 | } |
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| 89 | |
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| 90 | Path mkdir(Path dir) throws IOException { |
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| 91 | assertTrue(fs.mkdirs(dir)); |
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| 92 | assertTrue(fs.getFileStatus(dir).isDir()); |
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| 93 | return dir; |
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| 94 | } |
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| 95 | |
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| 96 | FileTree(FileSystem fs, String name) throws IOException { |
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| 97 | this.fs = fs; |
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| 98 | this.root = "/test/" + name; |
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| 99 | this.rootdir = mkdir(new Path(root)); |
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| 100 | |
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| 101 | for(int i = 0; i < 3; i++) { |
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| 102 | createSmallFile(rootdir); |
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| 103 | } |
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| 104 | |
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| 105 | for(int i = 0; i < NUN_SUBS; i++) { |
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| 106 | final Path sub = mkdir(new Path(root, "sub" + i)); |
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| 107 | int num_files = RANDOM.nextInt(3); |
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| 108 | for(int j = 0; j < num_files; j++) { |
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| 109 | createSmallFile(sub); |
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| 110 | } |
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| 111 | } |
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| 112 | |
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| 113 | System.out.println("rootdir = " + rootdir); |
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| 114 | } |
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| 115 | } |
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| 116 | |
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| 117 | static class ChPermissionStatus extends PermissionStatus { |
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| 118 | ChPermissionStatus(FileStatus filestatus) { |
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| 119 | this(filestatus, "", "", ""); |
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| 120 | } |
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| 121 | |
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| 122 | ChPermissionStatus(FileStatus filestatus, String owner, String group, String permission) { |
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| 123 | super("".equals(owner)? filestatus.getOwner(): owner, |
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| 124 | "".equals(group)? filestatus.getGroup(): group, |
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| 125 | "".equals(permission)? filestatus.getPermission(): new FsPermission(Short.parseShort(permission, 8))); |
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| 126 | } |
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| 127 | } |
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| 128 | |
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| 129 | public void testDistCh() throws Exception { |
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| 130 | final Configuration conf = new Configuration(); |
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| 131 | final MiniDFSCluster cluster = new MiniDFSCluster(conf, 2, true, null); |
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| 132 | final FileSystem fs = cluster.getFileSystem(); |
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| 133 | final MiniMRCluster mr = new MiniMRCluster(2, fs.getUri().toString(), 1); |
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| 134 | final FsShell shell = new FsShell(conf); |
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| 135 | |
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| 136 | try { |
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| 137 | final FileTree tree = new FileTree(fs, "testDistCh"); |
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| 138 | final FileStatus rootstatus = fs.getFileStatus(tree.rootdir); |
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| 139 | |
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| 140 | runLsr(shell, tree.root, 0); |
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| 141 | |
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| 142 | //generate random arguments |
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| 143 | final String[] args = new String[RANDOM.nextInt(NUN_SUBS-1) + 1]; |
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| 144 | final PermissionStatus[] newstatus = new PermissionStatus[NUN_SUBS]; |
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| 145 | final List<Integer> indices = new LinkedList<Integer>(); |
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| 146 | for(int i = 0; i < NUN_SUBS; i++) { |
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| 147 | indices.add(i); |
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| 148 | } |
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| 149 | for(int i = 0; i < args.length; i++) { |
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| 150 | final int index = indices.remove(RANDOM.nextInt(indices.size())); |
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| 151 | final String sub = "sub" + index; |
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| 152 | final boolean changeOwner = RANDOM.nextBoolean(); |
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| 153 | final boolean changeGroup = RANDOM.nextBoolean(); |
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| 154 | final boolean changeMode = !changeOwner && !changeGroup? true: RANDOM.nextBoolean(); |
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| 155 | |
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| 156 | final String owner = changeOwner? sub: ""; |
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| 157 | final String group = changeGroup? sub: ""; |
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| 158 | final String permission = changeMode? RANDOM.nextInt(8) + "" + RANDOM.nextInt(8) + "" + RANDOM.nextInt(8): ""; |
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| 159 | |
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| 160 | args[i] = tree.root + "/" + sub + ":" + owner + ":" + group + ":" + permission; |
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| 161 | newstatus[index] = new ChPermissionStatus(rootstatus, owner, group, permission); |
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| 162 | } |
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| 163 | for(int i = 0; i < NUN_SUBS; i++) { |
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| 164 | if (newstatus[i] == null) { |
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| 165 | newstatus[i] = new ChPermissionStatus(rootstatus); |
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| 166 | } |
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| 167 | } |
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| 168 | System.out.println("args=" + Arrays.asList(args).toString().replace(",", ",\n ")); |
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| 169 | System.out.println("newstatus=" + Arrays.asList(newstatus).toString().replace(",", ",\n ")); |
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| 170 | |
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| 171 | //run DistCh |
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| 172 | new DistCh(mr.createJobConf()).run(args); |
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| 173 | runLsr(shell, tree.root, 0); |
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| 174 | |
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| 175 | //check results |
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| 176 | for(int i = 0; i < NUN_SUBS; i++) { |
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| 177 | Path sub = new Path(tree.root + "/sub" + i); |
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| 178 | checkFileStatus(newstatus[i], fs.getFileStatus(sub)); |
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| 179 | for(FileStatus status : fs.listStatus(sub)) { |
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| 180 | checkFileStatus(newstatus[i], status); |
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| 181 | } |
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| 182 | } |
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| 183 | } finally { |
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| 184 | cluster.shutdown(); |
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| 185 | } |
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| 186 | } |
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| 187 | |
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| 188 | static final FsPermission UMASK = FsPermission.createImmutable((short)0111); |
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| 189 | |
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| 190 | static void checkFileStatus(PermissionStatus expected, FileStatus actual) { |
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| 191 | assertEquals(expected.getUserName(), actual.getOwner()); |
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| 192 | assertEquals(expected.getGroupName(), actual.getGroup()); |
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| 193 | FsPermission perm = expected.getPermission(); |
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| 194 | if (!actual.isDir()) { |
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| 195 | perm = perm.applyUMask(UMASK); |
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| 196 | } |
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| 197 | assertEquals(perm, actual.getPermission()); |
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| 198 | } |
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| 199 | |
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| 200 | private static String runLsr(final FsShell shell, String root, int returnvalue |
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| 201 | ) throws Exception { |
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| 202 | System.out.println("root=" + root + ", returnvalue=" + returnvalue); |
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| 203 | final ByteArrayOutputStream bytes = new ByteArrayOutputStream(); |
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| 204 | final PrintStream out = new PrintStream(bytes); |
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| 205 | final PrintStream oldOut = System.out; |
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| 206 | final PrintStream oldErr = System.err; |
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| 207 | System.setOut(out); |
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| 208 | System.setErr(out); |
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| 209 | final String results; |
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| 210 | try { |
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| 211 | assertEquals(returnvalue, shell.run(new String[]{"-lsr", root})); |
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| 212 | results = bytes.toString(); |
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| 213 | } finally { |
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| 214 | IOUtils.closeStream(out); |
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| 215 | System.setOut(oldOut); |
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| 216 | System.setErr(oldErr); |
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| 217 | } |
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| 218 | System.out.println("results:\n" + results); |
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| 219 | return results; |
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| 220 | } |
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| 221 | } |
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