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/*
* Copyright (c) 2023, 2024, 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 8114830
* @summary Verify FileAlreadyExistsException is not thrown for REPLACE_EXISTING
* @library ..
* @build CopyInterference
* @run junit CopyInterference
*/
import java.io.InputStream;
import java.io.IOException;
import java.nio.file.CopyOption;
import java.nio.file.FileAlreadyExistsException;
import java.nio.file.Files;
import java.nio.file.FileSystemException;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.stream.Stream;
import static java.nio.file.StandardCopyOption.*;
import static java.nio.file.LinkOption.*;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.MethodSource;
public class CopyInterference {
private static final int N_THREADS = 2;
private static final AtomicBoolean running = new AtomicBoolean(true);
private static class CopyTask implements Runnable {
final Path source;
final Path target;
final CopyOption[] options;
CopyTask(Path source, Path target, CopyOption[] options) {
this.source = source;
this.target = target;
this.options = options;
}
@Override
public void run() {
try {
while (running.get()) {
Files.copy(source, target, options);
}
} catch (FileAlreadyExistsException e) {
throw new RuntimeException("Unexpected exception", e);
} catch (FileSystemException e) {
System.out.printf("Expected FileSystemException: \"%s\"%n",
e.getMessage());
} catch (IOException e) {
throw new RuntimeException("Unexpected exception", e);
} finally {
running.set(false);
}
}
}
private static Stream<Arguments> pathAndOptionsProvider()
throws IOException {
Path parent = Path.of(System.getProperty("test.dir", "."));
Path dir = Files.createTempDirectory(parent, "foobargus");
List<Arguments> list = new ArrayList<Arguments>();
// regular file
Path sourceFile = Files.createTempFile(dir, "foo", "baz");
Class c = CopyInterference.class;
String name = "CopyInterference.class";
try (InputStream in = c.getResourceAsStream(name)) {
Files.copy(in, sourceFile, REPLACE_EXISTING);
}
Arguments args = Arguments.of(sourceFile, dir.resolve("targetFile"),
new CopyOption[] {REPLACE_EXISTING});
list.add(args);
// directory
Path sourceDirectory = Files.createTempDirectory(dir, "fubar");
args = Arguments.of(sourceDirectory, dir.resolve("targetDir"),
new CopyOption[] {REPLACE_EXISTING});
list.add(args);
if (TestUtil.supportsSymbolicLinks(dir)) {
// symbolic link, followed
Path link = dir.resolve("link");
Files.createSymbolicLink(link, sourceFile);
args = Arguments.of(link, dir.resolve("linkFollowed"),
new CopyOption[] {REPLACE_EXISTING});
list.add(args);
// symbolic link, not followed
args = Arguments.of(link, dir.resolve("linkNotFollowed"),
new CopyOption[] {REPLACE_EXISTING,
NOFOLLOW_LINKS});
list.add(args);
} else {
System.out.println("Links not supported: not testing links");
}
return list.stream();
}
@ParameterizedTest
@MethodSource("pathAndOptionsProvider")
void copy(Path source, Path target, CopyOption[] options)
throws InterruptedException, IOException {
Future<?>[] results = new Future<?>[N_THREADS];
try (ExecutorService es = Executors.newFixedThreadPool(N_THREADS)) {
CopyTask copyTask = new CopyTask(source, target, options);
for (int i = 0; i < N_THREADS; i++)
results[i] = es.submit(copyTask);
}
for (Future<?> res : results) {
try {
res.get();
} catch (ExecutionException e) {
throw new RuntimeException(res.exceptionNow());
}
}
}
}
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