| /* |
| * Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* @test |
| * @bug 4313887 |
| * @summary Sanity test for JDK-specific sensitivity level watch event modifier |
| * @modules jdk.unsupported |
| * @library .. |
| * @run main/timeout=240 SensitivityModifier |
| * @key randomness |
| */ |
| |
| import java.nio.file.*; |
| import static java.nio.file.StandardWatchEventKinds.*; |
| import java.io.OutputStream; |
| import java.io.IOException; |
| import java.util.Random; |
| import java.util.concurrent.TimeUnit; |
| import com.sun.nio.file.SensitivityWatchEventModifier; |
| |
| public class SensitivityModifier { |
| |
| static final Random rand = new Random(); |
| |
| static void register(Path[] dirs, WatchService watcher) throws IOException { |
| SensitivityWatchEventModifier[] sensitivtives = |
| SensitivityWatchEventModifier.values(); |
| for (int i=0; i<dirs.length; i++) { |
| SensitivityWatchEventModifier sensivity = |
| sensitivtives[ rand.nextInt(sensitivtives.length) ]; |
| Path dir = dirs[i]; |
| dir.register(watcher, new WatchEvent.Kind<?>[]{ ENTRY_MODIFY }, sensivity); |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| static void doTest(Path top) throws Exception { |
| FileSystem fs = top.getFileSystem(); |
| try (WatchService watcher = fs.newWatchService()) { |
| |
| // create directories and files |
| int nDirs = 5 + rand.nextInt(20); |
| int nFiles = 50 + rand.nextInt(50); |
| Path[] dirs = new Path[nDirs]; |
| Path[] files = new Path[nFiles]; |
| for (int i=0; i<nDirs; i++) { |
| dirs[i] = Files.createDirectory(top.resolve("dir" + i)); |
| } |
| for (int i=0; i<nFiles; i++) { |
| Path dir = dirs[rand.nextInt(nDirs)]; |
| files[i] = Files.createFile(dir.resolve("file" + i)); |
| } |
| |
| // register the directories (random sensitivity) |
| register(dirs, watcher); |
| |
| // sleep a bit here to ensure that modification to the first file |
| // can be detected by polling implementations (ie: last modified time |
| // may not change otherwise). |
| try { Thread.sleep(1000); } catch (InterruptedException e) { } |
| |
| // modify files and check that events are received |
| for (int i=0; i<10; i++) { |
| Path file = files[rand.nextInt(nFiles)]; |
| System.out.println("Modify: " + file); |
| try (OutputStream out = Files.newOutputStream(file)) { |
| out.write(new byte[100]); |
| } |
| |
| System.out.println("Waiting for event(s)..."); |
| boolean eventReceived = false; |
| WatchKey key = watcher.take(); |
| do { |
| for (WatchEvent<?> event: key.pollEvents()) { |
| if (event.kind() != ENTRY_MODIFY) |
| throw new RuntimeException("Unexpected event: " + event); |
| Path name = ((WatchEvent<Path>)event).context(); |
| if (name.equals(file.getFileName())) { |
| eventReceived = true; |
| break; |
| } |
| } |
| key.reset(); |
| key = watcher.poll(1, TimeUnit.SECONDS); |
| } while (key != null); |
| |
| // we should have received at least one ENTRY_MODIFY event |
| if (eventReceived) { |
| System.out.println("Event OK"); |
| } else { |
| throw new RuntimeException("No ENTRY_MODIFY event received for " + file); |
| } |
| |
| // re-register the directories to force changing their sensitivity |
| // level |
| register(dirs, watcher); |
| } |
| } |
| } |
| |
| public static void main(String[] args) throws Exception { |
| Path dir = TestUtil.createTemporaryDirectory(); |
| try { |
| doTest(dir); |
| } finally { |
| TestUtil.removeAll(dir); |
| } |
| } |
| } |