1 /* 2 * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* @test 25 * @bug 4313887 26 * @summary Sanity test for Sun-specific sensitivity level watch event modifier 27 * @library .. 28 * @run main/timeout=240 SensitivityModifier 29 * @key randomness 30 */ 31 32 import java.nio.file.*; 33 import static java.nio.file.StandardWatchEventKinds.*; 34 import java.io.OutputStream; 35 import java.io.IOException; 36 import java.util.Random; 37 import java.util.concurrent.TimeUnit; 38 import com.sun.nio.file.SensitivityWatchEventModifier; 39 40 public class SensitivityModifier { 41 42 static final Random rand = new Random(); 43 44 static void register(Path[] dirs, WatchService watcher) throws IOException { 45 SensitivityWatchEventModifier[] sensitivtives = 46 SensitivityWatchEventModifier.values(); 47 for (int i=0; i<dirs.length; i++) { 48 SensitivityWatchEventModifier sensivity = 49 sensitivtives[ rand.nextInt(sensitivtives.length) ]; 50 Path dir = dirs[i]; 51 dir.register(watcher, new WatchEvent.Kind<?>[]{ ENTRY_MODIFY }, sensivity); 52 } 53 } 54 55 @SuppressWarnings("unchecked") 56 static void doTest(Path top) throws Exception { 57 FileSystem fs = top.getFileSystem(); 58 try (WatchService watcher = fs.newWatchService()) { 59 60 // create directories and files 61 int nDirs = 5 + rand.nextInt(20); 62 int nFiles = 50 + rand.nextInt(50); 63 Path[] dirs = new Path[nDirs]; 64 Path[] files = new Path[nFiles]; 65 for (int i=0; i<nDirs; i++) { 66 dirs[i] = Files.createDirectory(top.resolve("dir" + i)); 67 } 68 for (int i=0; i<nFiles; i++) { 69 Path dir = dirs[rand.nextInt(nDirs)]; 70 files[i] = Files.createFile(dir.resolve("file" + i)); 71 } 72 73 // register the directories (random sensitivity) 74 register(dirs, watcher); 75 76 // sleep a bit here to ensure that modification to the first file 77 // can be detected by polling implementations (ie: last modified time 78 // may not change otherwise). 79 try { Thread.sleep(1000); } catch (InterruptedException e) { } 80 81 // modify files and check that events are received 82 for (int i=0; i<10; i++) { 83 Path file = files[rand.nextInt(nFiles)]; 84 System.out.println("Modify: " + file); 85 try (OutputStream out = Files.newOutputStream(file)) { 86 out.write(new byte[100]); 87 } 88 89 System.out.println("Waiting for event(s)..."); 90 boolean eventReceived = false; 91 WatchKey key = watcher.take(); 92 do { 93 for (WatchEvent<?> event: key.pollEvents()) { 94 if (event.kind() != ENTRY_MODIFY) 95 throw new RuntimeException("Unexpected event: " + event); 96 Path name = ((WatchEvent<Path>)event).context(); 97 if (name.equals(file.getFileName())) { 98 eventReceived = true; 99 break; 100 } 101 } 102 key.reset(); 103 key = watcher.poll(1, TimeUnit.SECONDS); 104 } while (key != null); 105 106 // we should have received at least one ENTRY_MODIFY event 107 if (eventReceived) { 108 System.out.println("Event OK"); 109 } else { 110 throw new RuntimeException("No ENTRY_MODIFY event received for " + file); 111 } 112 113 // re-register the directories to force changing their sensitivity 114 // level 115 register(dirs, watcher); 116 } 117 } 118 } 119 120 public static void main(String[] args) throws Exception { 121 Path dir = TestUtil.createTemporaryDirectory(); 122 try { 123 doTest(dir); 124 } finally { 125 TestUtil.removeAll(dir); 126 } 127 } 128 }