/*
* 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.flume.source;
import java.util.concurrent.CountDownLatch;
import org.apache.flume.Channel;
import org.apache.flume.Context;
import org.apache.flume.Event;
import org.apache.flume.EventDeliveryException;
import org.apache.flume.PollableSource;
import org.apache.flume.Transaction;
import org.apache.flume.channel.ChannelProcessor;
import org.apache.flume.channel.MemoryChannel;
import org.apache.flume.conf.Configurables;
import org.apache.flume.event.EventBuilder;
import org.apache.flume.lifecycle.LifecycleState;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class TestPollableSourceRunner {
private static final Logger logger = LoggerFactory
.getLogger(TestPollableSourceRunner.class);
private PollableSourceRunner sourceRunner;
@Before
public void setUp() {
sourceRunner = new PollableSourceRunner();
}
@Test
public void testLifecycle() throws InterruptedException {
final Channel channel = new MemoryChannel();
final CountDownLatch latch = new CountDownLatch(50);
Configurables.configure(channel, new Context());
PollableSource source = new PollableSource() {
private String name;
@Override
public Status process() throws EventDeliveryException {
Transaction transaction = channel.getTransaction();
try {
transaction.begin();
Event event = EventBuilder.withBody(String.valueOf(
"Event " + latch.getCount()).getBytes());
latch.countDown();
if (latch.getCount() % 20 == 0) {
throw new EventDeliveryException("I don't like event:" + event);
}
channel.put(event);
transaction.commit();
return Status.READY;
} catch (EventDeliveryException e) {
logger.error("Unable to deliver event. Exception follows.", e);
transaction.rollback();
return Status.BACKOFF;
} finally {
transaction.close();
}
}
@Override
public void start() {
// Unused.
}
@Override
public void stop() {
// Unused.
}
@Override
public LifecycleState getLifecycleState() {
// Unused.
return null;
}
@Override
public void setName(String name) {
this.name = name;
}
@Override
public String getName() {
return name;
}
@Override
public void setChannelProcessor(ChannelProcessor channelProcessor) {
// Not used
}
@Override
public ChannelProcessor getChannelProcessor() {
// Not used
return null;
}
};
sourceRunner.setSource(source);
sourceRunner.start();
latch.await();
sourceRunner.stop();
}
}