/*
* Copyright 2015-2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.integration.file;
import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.startsWith;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.mock;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.integration.file.filters.FileSystemPersistentAcceptOnceFileListFilter;
import org.springframework.integration.metadata.SimpleMetadataStore;
import org.springframework.integration.test.util.TestUtils;
import org.springframework.messaging.Message;
/**
* @author Gary Russell
* @author Artem Bilan
* @since 4.2
*
*/
public class WatchServiceDirectoryScannerTests {
@Rule
public TemporaryFolder folder = new TemporaryFolder();
private File foo;
private File bar;
private File top1;
private File foo1;
private File bar1;
@Before
public void setUp() throws IOException {
this.foo = this.folder.newFolder("foo");
this.bar = this.folder.newFolder("bar");
this.top1 = this.folder.newFile();
this.foo1 = File.createTempFile("foo", ".txt", this.foo);
this.bar1 = File.createTempFile("bar", ".txt", this.bar);
}
@Test
public void testWatchServiceDirectoryScanner() throws Exception {
FileReadingMessageSource fileReadingMessageSource = new FileReadingMessageSource();
fileReadingMessageSource.setDirectory(folder.getRoot());
fileReadingMessageSource.setUseWatchService(true);
fileReadingMessageSource.setWatchEvents(FileReadingMessageSource.WatchEventType.CREATE,
FileReadingMessageSource.WatchEventType.MODIFY,
FileReadingMessageSource.WatchEventType.DELETE);
fileReadingMessageSource.setBeanFactory(mock(BeanFactory.class));
final CountDownLatch removeFileLatch = new CountDownLatch(1);
FileSystemPersistentAcceptOnceFileListFilter filter =
new FileSystemPersistentAcceptOnceFileListFilter(new SimpleMetadataStore(), "test") {
@Override
public boolean remove(File fileToRemove) {
removeFileLatch.countDown();
return super.remove(fileToRemove);
}
};
fileReadingMessageSource.setFilter(filter);
fileReadingMessageSource.afterPropertiesSet();
fileReadingMessageSource.start();
DirectoryScanner scanner = fileReadingMessageSource.getScanner();
assertThat(scanner.getClass().getName(),
containsString("FileReadingMessageSource$WatchServiceDirectoryScanner"));
List<File> files = scanner.listFiles(folder.getRoot());
assertEquals(3, files.size());
assertTrue(files.contains(top1));
assertTrue(files.contains(foo1));
assertTrue(files.contains(bar1));
fileReadingMessageSource.start();
File top2 = this.folder.newFile();
File foo2 = File.createTempFile("foo", ".txt", this.foo);
File bar2 = File.createTempFile("bar", ".txt", this.bar);
File baz = new File(this.foo, "baz");
baz.mkdir();
File baz1 = File.createTempFile("baz", ".txt", baz);
files = scanner.listFiles(folder.getRoot());
int n = 0;
Set<File> accum = new HashSet<File>(files);
while (n++ < 300 && accum.size() != 4) {
Thread.sleep(100);
files = scanner.listFiles(folder.getRoot());
accum.addAll(files);
}
assertEquals(4, accum.size());
assertTrue(accum.contains(top2));
assertTrue(accum.contains(foo2));
assertTrue(accum.contains(bar2));
assertTrue(accum.contains(baz1));
/*See AbstractWatchKey#signalEvent source code:
if(var5 >= 512) {
var1 = StandardWatchEventKinds.OVERFLOW;
}
*/
fileReadingMessageSource.start();
List<File> filesForOverflow = new ArrayList<File>(600);
for (int i = 0; i < 600; i++) {
filesForOverflow.add(this.folder.newFile("" + i));
}
n = 0;
while (n++ < 300 && accum.size() < 604) {
Thread.sleep(100);
files = scanner.listFiles(folder.getRoot());
accum.addAll(files);
}
assertEquals(604, accum.size());
for (File fileForOverFlow : filesForOverflow) {
accum.contains(fileForOverFlow);
}
File baz2 = File.createTempFile("baz2", ".txt", baz);
n = 0;
while (n++ < 300 && accum.size() < 605) {
Thread.sleep(100);
files = scanner.listFiles(folder.getRoot());
accum.addAll(files);
}
assertTrue(accum.contains(baz2));
File baz2Copy = new File(baz2.getAbsolutePath());
baz2Copy.setLastModified(baz2.lastModified() + 100000);
n = 0;
files.clear();
while (n++ < 300 && files.size() < 1) {
Thread.sleep(100);
files = scanner.listFiles(folder.getRoot());
accum.addAll(files);
}
assertEquals(1, files.size());
assertTrue(files.contains(baz2));
baz2.delete();
n = 0;
while (n++ < 300 && removeFileLatch.getCount() > 0) {
Thread.sleep(100);
scanner.listFiles(folder.getRoot());
}
assertTrue(removeFileLatch.await(10, TimeUnit.SECONDS));
File baz3 = File.createTempFile("baz3", ".txt", baz);
n = 0;
Message<File> fileMessage = null;
while (n++ < 300 && (fileMessage = fileReadingMessageSource.receive()) == null) {
Thread.sleep(100);
}
assertNotNull(fileMessage);
assertEquals(baz3, fileMessage.getPayload());
assertThat(fileMessage.getHeaders().get(FileHeaders.RELATIVE_PATH, String.class),
startsWith(TestUtils.applySystemFileSeparator("foo/baz/")));
fileReadingMessageSource.stop();
}
}