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* 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,
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package org.apache.hadoop.chukwa.datacollection.adaptor.filetailer;
import static org.apache.hadoop.chukwa.util.TempFileUtil.makeTestFile;
import static org.junit.Assert.*;
import java.io.File;
import java.io.IOException;
import org.apache.hadoop.chukwa.conf.ChukwaConfiguration;
import org.apache.hadoop.chukwa.datacollection.agent.ChukwaAgent;
import org.apache.hadoop.chukwa.datacollection.agent.ChukwaAgent.AlreadyRunningException;
import org.apache.hadoop.chukwa.datacollection.connector.ChunkCatcherConnector;
import org.junit.After;
import org.junit.Test;
public class TestFileTailer {
private ChukwaAgent agent;
private String adaptorId;
private File testFile;
@After
public void tearDown() throws Exception {
agent.stopAdaptor(adaptorId, false);
agent.shutdown();
if (testFile != null) {
testFile.delete();
}
}
@Test
public void testDontSleepIfHasMoreData() throws AlreadyRunningException, IOException, InterruptedException {
ChukwaConfiguration cc = new ChukwaConfiguration();
cc.setInt("chukwaAgent.fileTailingAdaptor.maxReadSize", 18); // small in order to have hasMoreData=true
// (with 26 letters we should have 2 chunks)
agent = new ChukwaAgent(cc);
ChunkCatcherConnector chunks = new ChunkCatcherConnector();
chunks.start();
File baseDir = new File(System.getProperty("test.build.data", "/tmp"));
testFile = makeTestFile("testDontSleepIfHasMoreData", 1, baseDir); // insert 26 letters on file
long startTime = System.currentTimeMillis();
adaptorId = agent.processAddCommand("add adaptor_test ="
+ "filetailer.FileTailingAdaptor testDontSleepIfHasMoreData "
+ testFile.getCanonicalPath() + " 0");
chunks.waitForAChunk();
chunks.waitForAChunk();
long endTime = System.currentTimeMillis();
assertTrue( endTime - startTime < 300 ); // ensure that everything finishes very fast
// faster than SAMPLE_PERIOD_MS (ie: we don't sleep)
}
}