/*
* 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.hadoop.chukwa.datacollection.collector;
import java.io.File;
import java.io.IOException;
import java.util.*;
import java.util.regex.*;
import org.apache.hadoop.chukwa.*;
import org.apache.hadoop.chukwa.datacollection.adaptor.AdaptorShutdownPolicy;
import org.apache.hadoop.chukwa.datacollection.adaptor.TestDirTailingAdaptor;
import org.apache.hadoop.chukwa.datacollection.adaptor.filetailer.FileTailingAdaptor;
import org.apache.hadoop.chukwa.datacollection.adaptor.filetailer.TestRawAdaptor;
import org.apache.hadoop.chukwa.datacollection.agent.AdaptorResetThread;
import org.apache.hadoop.chukwa.datacollection.agent.ChukwaAgent;
import org.apache.hadoop.chukwa.datacollection.collector.servlet.CommitCheckServlet;
import org.apache.hadoop.chukwa.datacollection.collector.servlet.ServletCollector;
import org.apache.hadoop.chukwa.datacollection.connector.ChunkCatcherConnector;
import org.apache.hadoop.chukwa.datacollection.connector.http.HttpConnector;
import org.apache.hadoop.chukwa.datacollection.sender.*;
import org.apache.hadoop.chukwa.datacollection.sender.ChukwaHttpSender.CommitListEntry;
import org.apache.hadoop.chukwa.datacollection.writer.ChukwaWriter;
import org.apache.hadoop.chukwa.datacollection.writer.SeqFileWriter;
import org.apache.hadoop.chukwa.extraction.archive.SinkArchiver;
import org.apache.hadoop.chukwa.util.ConstRateAdaptor;
import org.apache.hadoop.chukwa.util.ConstRateValidator.ByteRange;
import org.apache.hadoop.chukwa.util.ConstRateValidator.ValidatorSM;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.SequenceFile;
import org.mortbay.jetty.Server;
import org.mortbay.jetty.servlet.Context;
import org.mortbay.jetty.servlet.ServletHolder;
import junit.framework.TestCase;
import static org.apache.hadoop.chukwa.datacollection.sender.AsyncAckSender.DelayedCommit;
import static org.apache.hadoop.chukwa.util.TempFileUtil.*;
public class TestDelayedAcks extends TestCase {
static final int PORTNO = 9993;
static int END2END_TEST_SECS = 30;
static int SEND_RATE = 180* 1000; //bytes/sec
static int CLIENT_SCANPERIOD = 1000;
static int SERVER_SCANPERIOD = 1000;
static int ROTATEPERIOD = 2000;
int ACK_TIMEOUT = 200;
//start an adaptor -- chunks should appear in the connector
//wait for timeout. More chunks should appear.
public void testAdaptorTimeout() throws Exception {
Configuration conf = new Configuration();
conf.set("chukwaAgent.control.port", "0");
conf.setBoolean("chukwaAgent.checkpoint.enabled", false);
conf.setInt("chukwaAgent.adaptor.context.switch.time", 500);
conf.setInt(AdaptorResetThread.TIMEOUT_OPT, ACK_TIMEOUT);
ChukwaAgent agent = new ChukwaAgent(conf);
ChunkCatcherConnector chunks = new ChunkCatcherConnector();
chunks.start();
assertEquals(0, agent.adaptorCount());
File testFile = makeTestFile("testDA", 50, new File(System.getProperty("test.build.data", "/tmp")));
long len = testFile.length();
System.out.println("wrote data to " + testFile);
AdaptorResetThread restart = new AdaptorResetThread(conf, agent);
//start timeout thread
agent.processAddCommand("add fta = "+ FileTailingAdaptor.class.getCanonicalName()
+ " testdata " + testFile.getCanonicalPath() + " 0" );
assertEquals(1, agent.adaptorCount());
Chunk c1 = chunks.waitForAChunk();
assertNotNull(c1);
List<CommitListEntry> pendingAcks = new ArrayList<CommitListEntry>();
pendingAcks.add(new DelayedCommit(c1.getInitiator(), c1.getSeqID(),
c1.getData().length, "foo", c1.getSeqID(), agent.getAdaptorName(c1.getInitiator())));
restart.reportPending(pendingAcks);
assertEquals(len, c1.getData().length);
Thread.sleep(ACK_TIMEOUT*2);
int resetCount = restart.resetTimedOutAdaptors(ACK_TIMEOUT);
Chunk c2 = chunks.waitForAChunk(1000);
assertNotNull(c2);
assertEquals(len, c2.getData().length);
assertTrue(resetCount > 0);
agent.shutdown();
testFile.delete();
}
/*
* Checks the CommitCheckServlet works correctly with a one-chunk file.
*/
public void testDelayedAck() throws Exception {
Configuration conf = new Configuration();
SeqFileWriter writer = new SeqFileWriter();
conf.set("writer.hdfs.filesystem", "file:///");
File tempDir = new File(System.getProperty("test.build.data", "/tmp"));
if (!tempDir.exists()) {
tempDir.mkdirs();
}
String outputDirectory = tempDir.getPath() + "/test_DA" + System.currentTimeMillis();
String seqWriterOutputDir = outputDirectory +"/seqWriter/seqOutputDir";
conf.set(SeqFileWriter.OUTPUT_DIR_OPT, seqWriterOutputDir );
writer.init(conf);
ArrayList<Chunk> oneChunk = new ArrayList<Chunk>();
oneChunk.add(new ChunkImpl("dt", "name", 1, new byte[] {'b'}, null));
ChukwaWriter.CommitStatus cs = writer.add(oneChunk);
writer.close();
File seqWriterFile = null;
File directory = new File(seqWriterOutputDir);
String[] files = directory.list();
for(String file: files) {
if ( file.endsWith(".done") ){
seqWriterFile = new File(directory, file);
break;
}
}
long lenWritten = seqWriterFile.length();
System.out.println("wrote " + lenWritten+ " bytes");
assertTrue(cs instanceof ChukwaWriter.COMMIT_PENDING);
ChukwaWriter.COMMIT_PENDING pending = (ChukwaWriter.COMMIT_PENDING) cs;
assertTrue(pending.pendingEntries.size() == 1);
String res = pending.pendingEntries.get(0);
System.out.println("result was " + res);
Pattern expectedPat= Pattern.compile(".* ([0-9]+)\n");
Matcher match = expectedPat.matcher(res);
assertTrue(match.matches());
long bytesPart = Long.parseLong(match.group(1));
assertEquals(bytesPart, lenWritten);
}
public static Server startCollectorOnPort(Configuration conf, int port,
ServletCollector collector) throws Exception {
Server server = new Server(port);
Context root = new Context(server, "/", Context.SESSIONS);
root.addServlet(new ServletHolder(collector), "/*");
root.addServlet(new ServletHolder(new CommitCheckServlet(conf)), "/"+CommitCheckServlet.DEFAULT_PATH);
server.start();
server.setStopAtShutdown(false);
return server;
}
public static String buildConf(Configuration conf) {
File tempDir = new File(System.getProperty("test.build.data", "/tmp"));
if (!tempDir.exists()) {
tempDir.mkdirs();
}
String outputDirectory = tempDir.getPath() + "/test_DA" + System.currentTimeMillis() ;
conf.setInt("chukwaCollector.rotateInterval", ROTATEPERIOD);
conf.set("writer.hdfs.filesystem", "file:///");
String seqWriterOutputDir = outputDirectory +"/chukwa_sink";
conf.set(SeqFileWriter.OUTPUT_DIR_OPT, seqWriterOutputDir );
conf.setInt(AsyncAckSender.POLLPERIOD_OPT, CLIENT_SCANPERIOD);
conf.setInt(CommitCheckServlet.SCANPERIOD_OPT, SERVER_SCANPERIOD);
conf.setBoolean(HttpConnector.ASYNC_ACKS_OPT, true);
conf.setInt(HttpConnector.MIN_POST_INTERVAL_OPT, 100);
conf.setInt(HttpConnector.MAX_SIZE_PER_POST_OPT, 10 * 1000*1000);
conf.setInt(SeqFileWriter.STAT_PERIOD_OPT, 60*60*24);
conf.setBoolean("chukwaAgent.checkpoint.enabled", false);
//turn off stats reporting thread, so we can use Writer.dataSize
conf.set(AsyncAckSender.POLLHOSTS_OPT, "afilethatdoesntexist");
//so that it won't try to read conf/collectors
conf.setInt("chukwaAgent.control.port", 0);
return outputDirectory;
}
public void testEndToEnd() {
try {
Configuration conf = new Configuration();
String outputDirectory = buildConf(conf);
ServletCollector collector = new ServletCollector(conf);
Server collectorServ = startCollectorOnPort(conf, PORTNO, collector);
Thread.sleep(1000);
ChukwaAgent agent = new ChukwaAgent(conf);
HttpConnector conn = new HttpConnector(agent, "http://localhost:"+PORTNO+"/");
conn.start();
String resp = agent.processAddCommand("add constSend = " + ConstRateAdaptor.class.getCanonicalName() +
" testData "+ SEND_RATE + " 0");
assertTrue("adaptor_constSend".equals(resp));
Thread.sleep(END2END_TEST_SECS * 1000);
//do the shutdown directly, here, so that acks are still processed.
assertNotNull(agent.getAdaptor("adaptor_constSend"));
long bytesOutput = agent.getAdaptor("adaptor_constSend").shutdown(AdaptorShutdownPolicy.GRACEFULLY);
Thread.sleep(CLIENT_SCANPERIOD + SERVER_SCANPERIOD + ROTATEPERIOD + 3000);
String[] stat = agent.getAdaptorList().get("adaptor_constSend").split(" ");
long bytesCommitted = Long.valueOf(stat[stat.length -1]);
long bytesPerSec = bytesOutput / (1000 * END2END_TEST_SECS);
System.out.println("data rate was " + bytesPerSec + " kb /second");
//all data should be committed
System.out.println(bytesCommitted + " bytes committed");
System.out.println(bytesOutput + " bytes output");
System.out.println("difference is " + (bytesOutput - bytesCommitted));
ChukwaWriter w = collector.getWriter();
long bytesWritten = ((SeqFileWriter)w).getBytesWritten();
System.out.println("collector wrote " + bytesWritten);
assertEquals(bytesCommitted, bytesOutput);
assertEquals(bytesWritten, bytesCommitted);
//We need a little imprecision here, since the send rate is a bit bursty,
//and since some acks got lost after the adaptor was stopped.
assertTrue(bytesPerSec > 9 * SEND_RATE/ 1000 / 10);
AsyncAckSender sender = (AsyncAckSender)conn.getSender();
assertEquals(0, sender.adaptorReset.getResetCount());
agent.shutdown();
collectorServ.stop();
conn.shutdown();
Thread.sleep(5000); //for collector to shut down
TestDirTailingAdaptor.nukeDirContents(new File(outputDirectory));
} catch (Exception e) {
e.printStackTrace();
fail(e.toString());
}
}
}