122 lines
4.5 KiB
Java
122 lines
4.5 KiB
Java
/*
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* Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 4313887
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* @summary Sanity test for Sun-specific sensitivity level watch event modifier
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* @library ..
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* @run main/timeout=240 SensitivityModifier
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*/
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import java.nio.file.*;
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import static java.nio.file.StandardWatchEventKinds.*;
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import java.io.OutputStream;
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import java.io.IOException;
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import java.util.Random;
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import java.util.concurrent.TimeUnit;
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import com.sun.nio.file.SensitivityWatchEventModifier;
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public class SensitivityModifier {
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static final Random rand = new Random();
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static void register(Path[] dirs, WatchService watcher) throws IOException {
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SensitivityWatchEventModifier[] sensitivtives =
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SensitivityWatchEventModifier.values();
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for (int i=0; i<dirs.length; i++) {
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SensitivityWatchEventModifier sensivity =
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sensitivtives[ rand.nextInt(sensitivtives.length) ];
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Path dir = dirs[i];
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dir.register(watcher, new WatchEvent.Kind<?>[]{ ENTRY_MODIFY }, sensivity);
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}
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}
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@SuppressWarnings("unchecked")
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static void doTest(Path top) throws Exception {
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FileSystem fs = top.getFileSystem();
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WatchService watcher = fs.newWatchService();
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// create directories and files
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int nDirs = 5 + rand.nextInt(20);
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int nFiles = 50 + rand.nextInt(50);
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Path[] dirs = new Path[nDirs];
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Path[] files = new Path[nFiles];
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for (int i=0; i<nDirs; i++) {
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dirs[i] = Files.createDirectory(top.resolve("dir" + i));
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}
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for (int i=0; i<nFiles; i++) {
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Path dir = dirs[rand.nextInt(nDirs)];
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files[i] = Files.createFile(dir.resolve("file" + i));
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}
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// register the directories (random sensitivity)
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register(dirs, watcher);
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// sleep a bit here to ensure that modification to the first file
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// can be detected by polling implementations (ie: last modified time
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// may not change otherwise).
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try { Thread.sleep(1000); } catch (InterruptedException e) { }
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// modify files and check that events are received
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for (int i=0; i<10; i++) {
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Path file = files[rand.nextInt(nFiles)];
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System.out.println("Modify: " + file);
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try (OutputStream out = Files.newOutputStream(file)) {
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out.write(new byte[100]);
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}
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System.out.println("Waiting for event...");
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WatchKey key = watcher.take();
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WatchEvent<?> event = key.pollEvents().iterator().next();
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if (event.kind() != ENTRY_MODIFY)
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throw new RuntimeException("Unexpected event: " + event);
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Path name = ((WatchEvent<Path>)event).context();
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if (!name.equals(file.getFileName()))
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throw new RuntimeException("Unexpected context: " + name);
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System.out.println("Event OK");
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// drain events (to avoid interference)
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do {
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key.pollEvents();
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key.reset();
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key = watcher.poll(1, TimeUnit.SECONDS);
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} while (key != null);
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// re-register the directories to force changing their sensitivity
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// level
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register(dirs, watcher);
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}
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// done
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watcher.close();
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}
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public static void main(String[] args) throws Exception {
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Path dir = TestUtil.createTemporaryDirectory();
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try {
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doTest(dir);
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} finally {
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TestUtil.removeAll(dir);
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}
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}
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}
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