| /** |
| * 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.hdfs; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.DataInputStream; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hdfs.client.HdfsClientConfigKeys; |
| import org.junit.Test; |
| |
| /** |
| * This class tests the DFS class via the FileSystem interface in a single node |
| * mini-cluster. |
| */ |
| public class TestLocalDFS { |
| |
| private void writeFile(FileSystem fileSys, Path name) throws IOException { |
| DataOutputStream stm = fileSys.create(name); |
| stm.writeBytes("oom"); |
| stm.close(); |
| } |
| |
| private void readFile(FileSystem fileSys, Path name) throws IOException { |
| DataInputStream stm = fileSys.open(name); |
| byte[] buffer = new byte[4]; |
| int bytesRead = stm.read(buffer, 0 , 4); |
| assertEquals("oom", new String(buffer, 0 , bytesRead)); |
| stm.close(); |
| } |
| |
| private void cleanupFile(FileSystem fileSys, Path name) throws IOException { |
| assertTrue(fileSys.exists(name)); |
| fileSys.delete(name, true); |
| assertTrue(!fileSys.exists(name)); |
| } |
| |
| static String getUserName(FileSystem fs) { |
| if (fs instanceof DistributedFileSystem) { |
| return ((DistributedFileSystem)fs).dfs.ugi.getShortUserName(); |
| } |
| return System.getProperty("user.name"); |
| } |
| |
| /** |
| * Tests get/set working directory in DFS. |
| */ |
| @Test(timeout=20000) |
| public void testWorkingDirectory() throws IOException { |
| Configuration conf = new HdfsConfiguration(); |
| MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).build(); |
| FileSystem fileSys = cluster.getFileSystem(); |
| try { |
| Path orig_path = fileSys.getWorkingDirectory(); |
| assertTrue(orig_path.isAbsolute()); |
| Path file1 = new Path("somewhat/random.txt"); |
| writeFile(fileSys, file1); |
| assertTrue(fileSys.exists(new Path(orig_path, file1.toString()))); |
| fileSys.delete(file1, true); |
| Path subdir1 = new Path("/somewhere"); |
| fileSys.setWorkingDirectory(subdir1); |
| writeFile(fileSys, file1); |
| cleanupFile(fileSys, new Path(subdir1, file1.toString())); |
| Path subdir2 = new Path("else"); |
| fileSys.setWorkingDirectory(subdir2); |
| writeFile(fileSys, file1); |
| readFile(fileSys, file1); |
| cleanupFile(fileSys, new Path(new Path(subdir1, subdir2.toString()), |
| file1.toString())); |
| |
| // test home directory |
| Path home = |
| fileSys.makeQualified( |
| new Path(HdfsClientConfigKeys.DFS_USER_HOME_DIR_PREFIX_DEFAULT |
| + "/" + getUserName(fileSys))); |
| Path fsHome = fileSys.getHomeDirectory(); |
| assertEquals(home, fsHome); |
| |
| } finally { |
| fileSys.close(); |
| cluster.shutdown(); |
| } |
| } |
| |
| /** |
| * Tests get/set working directory in DFS. |
| */ |
| @Test(timeout=30000) |
| public void testHomeDirectory() throws IOException { |
| final String[] homeBases = new String[] {"/home", "/home/user"}; |
| Configuration conf = new HdfsConfiguration(); |
| for (final String homeBase : homeBases) { |
| conf.set(HdfsClientConfigKeys.DFS_USER_HOME_DIR_PREFIX_KEY, homeBase); |
| MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).build(); |
| FileSystem fileSys = cluster.getFileSystem(); |
| try { |
| // test home directory |
| Path home = |
| fileSys.makeQualified( |
| new Path(homeBase + "/" + getUserName(fileSys))); |
| Path fsHome = fileSys.getHomeDirectory(); |
| assertEquals(home, fsHome); |
| } finally { |
| fileSys.close(); |
| cluster.shutdown(); |
| } |
| } |
| } |
| } |