/**
* Licensed to Cloudera, Inc. under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Cloudera, Inc. 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 com.cloudera.flume.handlers.avro;
import static org.junit.Assert.assertEquals;
import java.io.IOException;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.junit.Before;
import org.junit.Test;
import com.cloudera.flume.ExampleData;
import com.cloudera.flume.conf.FlumeConfiguration;
import com.cloudera.flume.core.EventImpl;
import com.cloudera.flume.core.EventSource;
import com.cloudera.flume.core.EventUtil;
import com.cloudera.flume.handlers.debug.MemorySinkSource;
import com.cloudera.flume.handlers.debug.NoNlASCIISynthSource;
import com.cloudera.flume.reporter.ReportEvent;
import com.cloudera.flume.reporter.aggregator.CounterSink;
import com.cloudera.util.NetUtils;
/**
* Tests AvroSinks and AvroSources. Pretty much mimics TestThriftSinks.
*/
public class TestAvroSinks implements ExampleData {
public static Logger LOG = Logger.getLogger(TestAvroSinks.class);
@Before
public void setLogging() {
Logger.getLogger(TestAvroSinks.class).setLevel(Level.DEBUG);
Logger.getLogger(AvroEventSource.class).setLevel(Level.DEBUG);
}
@Before
public void setLocalhost() {
NetUtils.setLocalhost("host");
}
/**
* The pipeline is:
*
* text file -> mem
*
* mem -> AvroEventSink -> AvroEventSource -> counter
*/
@Test
public void testAvroSend() throws IOException {
EventSource txt = new NoNlASCIISynthSource(25, 100);
txt.open();
MemorySinkSource mem = new MemorySinkSource();
mem.open();
EventUtil.dumpAll(txt, mem);
txt.close();
FlumeConfiguration conf = FlumeConfiguration.get();
final AvroEventSource tes = new AvroEventSource(conf.getCollectorPort() + 1);
tes.open();
final CounterSink cnt = new CounterSink("count");
cnt.open();
Thread t = new Thread("drain") {
public void run() {
try {
EventUtil.dumpAll(tes, cnt);
} catch (IOException e) {
}
}
};
t.start(); // drain the sink.
// mem -> AvroEventSink
AvroEventSink snk = new AvroEventSink("0.0.0.0",
conf.getCollectorPort() + 1);
snk.open();
EventUtil.dumpAll(mem, snk);
mem.close();
snk.close();
// a little delay to drain events at AvroEventSource queue
try {
Thread.sleep(1000);
t.interrupt();
} catch (InterruptedException e) {
}
tes.close();
assertEquals(25, cnt.getCount());
ReportEvent rpt = tes.getReport();
/*
* The check on BytesIn is different than one on TestThriftSinks tests. This
* is because currently in the AvroSink version, BytesIn is equal to the
* number of Bytes of the Event.body shipped.
*/
assertEquals(2500, rpt.getLongMetric(AvroEventSource.A_BYTES_IN)
.longValue());
assertEquals(25, rpt.getLongMetric(AvroEventSource.A_DEQUEUED).longValue());
assertEquals(25, rpt.getLongMetric(AvroEventSource.A_ENQUEUED).longValue());
assertEquals(0, rpt.getLongMetric(AvroEventSource.A_QUEUE_CAPACITY)
.intValue());
assertEquals(1000, rpt.getLongMetric(AvroEventSource.A_QUEUE_FREE)
.intValue());
}
/**
* This tests starts many threads and confirms that the metrics values in
* ThiftEventSource are consistently updated.
*
* The pipeline is:
*
* text file -> mem
*
* mem -> AvroEventSink -> AvroEventSource -> counter
*/
@Test
public void testManyThreadsAvroSend() throws IOException,
InterruptedException {
final int threads = 10;
final FlumeConfiguration conf = FlumeConfiguration.get();
// this is a slight tweak to avoid port conflicts
final AvroEventSource tes = new AvroEventSource(conf.getCollectorPort() + 1);
tes.open();
final CounterSink cnt = new CounterSink("count");
cnt.open();
Thread t = new Thread("drain") {
public void run() {
try {
EventUtil.dumpAll(tes, cnt);
} catch (IOException e) {
}
}
};
t.start(); // drain the sink.
// fork off threads threads and have them start all the same time.
final CountDownLatch sendStarted = new CountDownLatch(threads);
final CountDownLatch sendDone = new CountDownLatch(threads);
final AtomicLong sendByteSum = new AtomicLong(0);
for (int i = 0; i < threads; i++) {
final int id = i;
Thread th = new Thread() {
public void run() {
try {
EventSource txt = new NoNlASCIISynthSource(25, 100);
txt.open();
MemorySinkSource mem = new MemorySinkSource();
mem.open();
EventUtil.dumpAll(txt, mem);
txt.close();
// mem -> AvroEventSink
AvroEventSink snk = new AvroEventSink("0.0.0.0", conf
.getCollectorPort() + 1);
snk.open();
sendStarted.countDown();
sendStarted.await();
EventUtil.dumpAll(mem, snk);
mem.close();
snk.close();
sendByteSum.addAndGet(snk.sentBytes.get());
LOG.info("sink " + id + " sent " + snk.sentBytes + " bytes");
sendDone.countDown();
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
};
th.start();
}
// wait for senders to send all
sendDone.await();
// a little delay get data to the receiving side.
Thread.sleep(1000);
tes.close();
assertEquals(25 * threads, cnt.getCount());
ReportEvent rpt = tes.getReport();
assertEquals(2500 * threads, sendByteSum.get());
assertEquals(2500 * threads, rpt.getLongMetric(AvroEventSource.A_BYTES_IN)
.longValue());
assertEquals(25 * threads, rpt.getLongMetric(AvroEventSource.A_DEQUEUED)
.longValue());
assertEquals(25 * threads, rpt.getLongMetric(AvroEventSource.A_ENQUEUED)
.longValue());
assertEquals(0, rpt.getLongMetric(AvroEventSource.A_QUEUE_CAPACITY)
.longValue());
assertEquals(1000, rpt.getLongMetric(AvroEventSource.A_QUEUE_FREE)
.longValue());
}
/**
* Checks to verify that a Avro server doesn't hang forever on closing
*/
@Test
public void testAvroEventServerCloseTimeout() throws IOException {
final FlumeConfiguration conf = FlumeConfiguration.get();
// this is a slight tweak to avoid port conflicts
final AvroEventSource tes = new AvroEventSource(conf.getCollectorPort() + 1);
tes.open();
tes.enqueue(new EventImpl(new byte[0]));
tes.close();
}
}