/**
* 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.agent.durability;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.io.File;
import java.io.IOException;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.junit.Before;
import org.junit.Test;
import com.cloudera.flume.conf.Context;
import com.cloudera.flume.conf.FlumeSpecException;
import com.cloudera.flume.conf.ReportTestingContext;
import com.cloudera.flume.core.CompositeSink;
import com.cloudera.flume.core.EventSink;
import com.cloudera.flume.core.EventSource;
import com.cloudera.flume.core.EventUtil;
import com.cloudera.flume.handlers.debug.NoNlASCIISynthSource;
import com.cloudera.flume.handlers.endtoend.AckListener;
import com.cloudera.flume.handlers.rolling.ProcessTagger;
import com.cloudera.flume.handlers.rolling.TimeTrigger;
import com.cloudera.flume.reporter.ReportManager;
import com.cloudera.flume.reporter.aggregator.CounterSink;
import com.cloudera.util.FileUtil;
/**
* This suite of tests bangs on the WAL with many concurrent writers
*/
public class TestNaiveFileWALManagerConcurrently {
public static Logger LOG = Logger
.getLogger(TestNaiveFileWALManagerConcurrently.class);
@Before
public void setDebug() {
Logger.getLogger(NaiveFileWALManager.class).setLevel(Level.DEBUG);
LOG.info("============================================================");
}
/**
* Test case exercises one wal manager, one ackedwriteahead deco, many
* threads.
*/
public void doSharedWALDeco(final int count, final int threads)
throws IOException, InterruptedException, FlumeSpecException {
File dir = FileUtil.mktempdir();
try {
final CountDownLatch start = new CountDownLatch(threads);
final CountDownLatch done = new CountDownLatch(threads);
final NaiveFileWALManager wal = new NaiveFileWALManager(dir);
wal.open();
Context ctx = new ReportTestingContext();
EventSink cntsnk = new CompositeSink(ctx, "counter(\"total\")");
// use the same wal, but different counter.
final EventSink snk = new NaiveFileWALDeco(ctx, cntsnk, wal,
new TimeTrigger(new ProcessTagger(), 1000000),
new AckListener.Empty(), 1000000);
snk.open();
for (int i = 0; i < threads; i++) {
new Thread() {
@Override
public void run() {
start.countDown();
try {
EventSource src = new NoNlASCIISynthSource(count, 100);
start.await();
src.open();
EventUtil.dumpAll(src, snk);
src.close();
} catch (Exception e) {
LOG.error("failure", e);
// fail("e");
} finally {
done.countDown();
}
}
}.start();
}
boolean ok = done.await(30, TimeUnit.SECONDS);
assertTrue("Test timed out!", ok);
Thread.sleep(1000);
snk.close();
CounterSink cnt = (CounterSink) ReportManager.get()
.getReportable("total");
long ci = cnt.getCount();
LOG.info("count : " + ci);
assertEquals((count * threads) + 2, ci);
} finally {
FileUtil.rmr(dir);
}
}
/**
* Shared wal deco, small amount of concurrency
*/
@Test
public void testSharedDecoSmall() throws IOException, InterruptedException,
FlumeSpecException {
doSharedWALDeco(10000, 10);
}
/**
* Shared wal deco, large amount of concurrency
*/
@Test
public void testSharedDecoLarge() throws IOException, InterruptedException,
FlumeSpecException {
doSharedWALDeco(1000, 100);
}
/**
* Shared wal deco, huge amount of concurrency
*/
@Test
public void testSharedDecoHuge() throws IOException, InterruptedException,
FlumeSpecException {
doSharedWALDeco(100, 1000);
}
}