/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.camel.component.file;
import java.io.File;
import java.io.FileOutputStream;
import java.nio.channels.FileLock;
import org.apache.camel.ContextTestSupport;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Unit test to verify exclusive read - that we do not poll files that is in progress of being written.
*/
public class FileExclusiveReadTest extends ContextTestSupport {
private static final Log LOG = LogFactory.getLog(FileExclusiveReadTest.class);
private String fileUrl = "file://target/exclusiveread/slowfile?consumer.delay=500&consumer.exclusiveReadLock=true";
@Override
protected void setUp() throws Exception {
disableJMX();
super.setUp();
}
public void testPoolIn3SecondsButNoFiles() throws Exception {
deleteDirectory("./target/exclusiveread");
createDirectory("./target/exclusiveread/slowfile");
MockEndpoint mock = getMockEndpoint("mock:result");
mock.expectedMessageCount(0);
Thread.sleep(3 * 1000L);
mock.assertIsSatisfied();
}
// TODO: Not possible to test in the same JVM (see javadoc for FileLock)
public void xxxtestPollFileWhileSlowFileIsBeingWritten() throws Exception {
deleteDirectory("./target/exclusiveread");
createDirectory("./target/exclusiveread/slowfile");
MockEndpoint mock = getMockEndpoint("mock:result");
mock.expectedMessageCount(1);
mock.expectedBodiesReceived("Hello WorldLine #0Line #1Line #2Bye Worl");
createSlowFile();
mock.assertIsSatisfied();
}
private void createSlowFile() throws Exception {
LOG.info("Creating a slow file ...");
File file = new File("./target/exclusiveread/slowfile/hello.txt");
FileOutputStream fos = new FileOutputStream(file);
FileLock lock = fos.getChannel().lock();
fos.write("Hello World".getBytes());
for (int i = 0; i < 3; i++) {
Thread.sleep(1000);
fos.write(("Line #" + i).getBytes());
LOG.info("Appending to slowfile");
}
fos.write("Bye World".getBytes());
lock.release();
fos.close();
LOG.info("... done creating slowfile");
}
protected RouteBuilder createRouteBuilder() throws Exception {
return new RouteBuilder() {
public void configure() throws Exception {
from(fileUrl).to("mock:result");
}
};
}
}