| /** |
| * 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.fs; |
| |
| import java.io.IOException; |
| import java.util.EnumSet; |
| import java.util.Set; |
| |
| import junit.framework.Assert; |
| |
| import org.apache.hadoop.fs.Options.CreateOpts; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| /** |
| * Tests {@link FileContext.#deleteOnExit(Path)} functionality. |
| */ |
| public class TestFileContextDeleteOnExit { |
| private static String TEST_ROOT_DIR = |
| System.getProperty("test.build.data", "/tmp") + "/test"; |
| |
| private static byte[] data = new byte[1024 * 2]; // two blocks of data |
| { |
| for (int i = 0; i < data.length; i++) { |
| data[i] = (byte) (i % 10); |
| } |
| } |
| |
| private FileContext fc; |
| |
| @Before |
| public void setup() throws IOException { |
| fc = FileContext.getLocalFSFileContext(); |
| } |
| |
| @After |
| public void tearDown() throws IOException { |
| fc.delete(getTestRootPath(), true); |
| } |
| |
| private Path getTestRootPath() { |
| return fc.makeQualified(new Path(TEST_ROOT_DIR)); |
| } |
| |
| private Path getTestPath(String pathString) { |
| return fc.makeQualified(new Path(TEST_ROOT_DIR, pathString)); |
| } |
| |
| private void createFile(FileContext fc, Path path) throws IOException { |
| FSDataOutputStream out = fc.create(path, EnumSet.of(CreateFlag.CREATE), |
| CreateOpts.createParent()); |
| out.write(data, 0, data.length); |
| out.close(); |
| } |
| |
| private void checkDeleteOnExitData(int size, FileContext fc, Path... paths) { |
| Assert.assertEquals(size, FileContext.deleteOnExit.size()); |
| Set<Path> set = FileContext.deleteOnExit.get(fc); |
| Assert.assertEquals(paths.length, (set == null ? 0 : set.size())); |
| for (Path path : paths) { |
| Assert.assertTrue(set.contains(path)); |
| } |
| } |
| |
| @Test |
| public void testDeleteOnExit() throws Exception { |
| // Create deleteOnExit entries |
| Path file1 = getTestPath("file1"); |
| createFile(fc, file1); |
| fc.deleteOnExit(file1); |
| checkDeleteOnExitData(1, fc, file1); |
| |
| // Ensure shutdown hook is added |
| Assert.assertTrue(Runtime.getRuntime().removeShutdownHook(FileContext.finalizer)); |
| |
| Path file2 = getTestPath("dir1/file2"); |
| createFile(fc, file2); |
| fc.deleteOnExit(file2); |
| checkDeleteOnExitData(1, fc, file1, file2); |
| |
| Path dir = getTestPath("dir3/dir4/dir5/dir6"); |
| createFile(fc, dir); |
| fc.deleteOnExit(dir); |
| checkDeleteOnExitData(1, fc, file1, file2, dir); |
| |
| // trigger deleteOnExit and ensure the registered |
| // paths are cleaned up |
| FileContext.finalizer.start(); |
| FileContext.finalizer.join(); |
| checkDeleteOnExitData(0, fc, new Path[0]); |
| Assert.assertFalse(fc.exists(file1)); |
| Assert.assertFalse(fc.exists(file2)); |
| Assert.assertFalse(fc.exists(dir)); |
| } |
| } |