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/*
* 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 6838333
* @summary Sanity test for JDK-specific FILE_TREE watch event modifier
* @library ..
* @modules jdk.unsupported
*/
import java.nio.file.*;
import static java.nio.file.StandardWatchEventKinds.*;
import java.io.IOException;
import java.io.OutputStream;
import java.util.*;
import java.util.concurrent.*;
import static com.sun.nio.file.ExtendedWatchEventModifier.*;
public class FileTreeModifier {
static void checkExpectedEvent(WatchService watcher,
WatchEvent.Kind<?> expectedType,
Object expectedContext)
{
WatchKey key;
try {
key = watcher.take();
} catch (InterruptedException x) {
// should not happen
throw new RuntimeException(x);
}
WatchEvent<?> event = key.pollEvents().iterator().next();
System.out.format("Event: type=%s, count=%d, context=%s\n",
event.kind(), event.count(), event.context());
if (event.kind() != expectedType)
throw new RuntimeException("unexpected event");
if (!expectedContext.equals(event.context()))
throw new RuntimeException("unexpected context");
}
static void doTest(Path top) throws IOException {
FileSystem fs = top.getFileSystem();
WatchService watcher = fs.newWatchService();
// create directories
Path subdir = Files.createDirectories(top.resolve("a").resolve("b").resolve("c"));
// Test ENTRY_CREATE with FILE_TREE modifier.
WatchKey key = top.register(watcher,
new WatchEvent.Kind<?>[]{ ENTRY_CREATE }, FILE_TREE);
// create file in a/b/c and check we get create event
Path file = Files.createFile(subdir.resolve("foo"));
checkExpectedEvent(watcher, ENTRY_CREATE, top.relativize(file));
key.reset();
// Test ENTRY_DELETE with FILE_TREE modifier.
WatchKey k = top.register(watcher,
new WatchEvent.Kind<?>[]{ ENTRY_DELETE }, FILE_TREE);
if (k != key)
throw new RuntimeException("Existing key not returned");
// delete a/b/c/foo and check we get delete event
Files.delete(file);
checkExpectedEvent(watcher, ENTRY_DELETE, top.relativize(file));
key.reset();
// Test changing registration to ENTRY_CREATE without modifier
k = top.register(watcher, new WatchEvent.Kind<?>[]{ ENTRY_CREATE });
if (k != key)
throw new RuntimeException("Existing key not returned");
// create a/b/c/foo
Files.createFile(file);
// check that key is not queued
WatchKey nextKey;
try {
nextKey = watcher.poll(3, TimeUnit.SECONDS);
} catch (InterruptedException e) {
throw new RuntimeException();
}
if (nextKey != null)
throw new RuntimeException("WatchKey not expected to be polled");
// create bar and check we get create event
file = Files.createFile(top.resolve("bar"));
checkExpectedEvent(watcher, ENTRY_CREATE, top.relativize(file));
key.reset();
// Test changing registration to <all> with FILE_TREE modifier
k = top.register(watcher,
new WatchEvent.Kind<?>[]{ ENTRY_CREATE, ENTRY_DELETE, ENTRY_MODIFY },
FILE_TREE);
if (k != key)
throw new RuntimeException("Existing key not returned");
// modify bar and check we get modify event
try (OutputStream out = Files.newOutputStream(file)) {
out.write("Double shot expresso please".getBytes("UTF-8"));
}
checkExpectedEvent(watcher, ENTRY_MODIFY, top.relativize(file));
key.reset();
}
public static void main(String[] args) throws IOException {
if (!System.getProperty("os.name").startsWith("Windows")) {
System.out.println("This is Windows-only test at this time!");
return;
}
Path dir = TestUtil.createTemporaryDirectory();
try {
doTest(dir);
} finally {
TestUtil.removeAll(dir);
}
}
}
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