| /** |
| * 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.Set; |
| |
| import junit.framework.Assert; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import static org.apache.hadoop.fs.FileContextTestHelper.*; |
| |
| /** |
| * Tests {@link FileContext.#deleteOnExit(Path)} functionality. |
| */ |
| public class TestFileContextDeleteOnExit { |
| private static int blockSize = 1024; |
| private static int numBlocks = 2; |
| |
| private FileContext fc; |
| |
| @Before |
| public void setup() throws IOException { |
| fc = FileContext.getLocalFSFileContext(); |
| } |
| |
| @After |
| public void tearDown() throws IOException { |
| fc.delete(getTestRootPath(fc), true); |
| } |
| |
| |
| private void checkDeleteOnExitData(int size, FileContext fc, Path... paths) { |
| Assert.assertEquals(size, FileContext.DELETE_ON_EXIT.size()); |
| Set<Path> set = FileContext.DELETE_ON_EXIT.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 = getTestRootPath(fc, "file1"); |
| createFile(fc, file1, numBlocks, blockSize); |
| fc.deleteOnExit(file1); |
| checkDeleteOnExitData(1, fc, file1); |
| |
| // Ensure shutdown hook is added |
| Assert.assertTrue(Runtime.getRuntime().removeShutdownHook(FileContext.FINALIZER)); |
| |
| Path file2 = getTestRootPath(fc, "dir1/file2"); |
| createFile(fc, file2, numBlocks, blockSize); |
| fc.deleteOnExit(file2); |
| checkDeleteOnExitData(1, fc, file1, file2); |
| |
| Path dir = getTestRootPath(fc, "dir3/dir4/dir5/dir6"); |
| createFile(fc, dir, numBlocks, blockSize); |
| 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(exists(fc, file1)); |
| Assert.assertFalse(exists(fc, file2)); |
| Assert.assertFalse(exists(fc, dir)); |
| } |
| } |