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* Licensed to the Apache Software Foundation (ASF) under one
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* 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.adaptor.filetailer;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import org.apache.hadoop.chukwa.conf.ChukwaConfiguration;
import org.apache.hadoop.chukwa.Chunk;
import org.apache.hadoop.chukwa.datacollection.adaptor.*;
import org.apache.hadoop.chukwa.datacollection.agent.ChukwaAgent;
import org.apache.hadoop.chukwa.datacollection.controller.ChukwaAgentController;
import org.apache.hadoop.chukwa.datacollection.connector.ChunkCatcherConnector;
import junit.framework.TestCase;
public class TestStartAtOffset extends TestCase {
ChunkCatcherConnector chunks;
public TestStartAtOffset() {
chunks = new ChunkCatcherConnector();
chunks.start();
}
public void testStartAtOffset() throws IOException, InterruptedException,
ChukwaAgent.AlreadyRunningException {
ChukwaAgent agent = new ChukwaAgent();
// Remove any adaptor left over from previous run
ChukwaConfiguration cc = new ChukwaConfiguration();
int portno = cc.getInt("chukwaAgent.control.port", 9093);
ChukwaAgentController cli = new ChukwaAgentController("localhost", portno);
cli.removeAll();
// sleep for some time to make sure we don't get chunk from existing streams
Thread.sleep(5000);
File testFile = makeTestFile();
int startOffset = 0; // skip first line
long adaptorId = agent
.processCommand("add org.apache.hadoop.chukwa.datacollection.adaptor.filetailer.CharFileTailingAdaptorUTF8 "
+ "lines " + startOffset + " " + testFile + " " + startOffset);
assertTrue(adaptorId != -1);
System.out.println("getting a chunk...");
Chunk c = chunks.waitForAChunk();
System.out.println("got chunk");
while (!c.getDataType().equals("lines")) {
c = chunks.waitForAChunk();
}
assertTrue(c.getSeqID() == testFile.length() + startOffset);
System.out.println("RecordOffsets length:" + c.getRecordOffsets().length);
assertTrue(c.getRecordOffsets().length == 80); // 80 lines in the file.
int recStart = 0;
for (int rec = 0; rec < c.getRecordOffsets().length; ++rec) {
String record = new String(c.getData(), recStart,
c.getRecordOffsets()[rec] - recStart + 1);
System.out.println("record " + rec + " was: " + record);
assertTrue(record.equals(rec + " abcdefghijklmnopqrstuvwxyz\n"));
recStart = c.getRecordOffsets()[rec] + 1;
}
assertTrue(c.getDataType().equals("lines"));
agent.stopAdaptor(adaptorId, false);
agent.shutdown();
}
public void testStartAfterOffset() throws IOException, InterruptedException,
ChukwaAgent.AlreadyRunningException {
ChukwaAgent agent = new ChukwaAgent();
// Remove any adaptor left over from previous run
ChukwaConfiguration cc = new ChukwaConfiguration();
int portno = cc.getInt("chukwaAgent.control.port", 9093);
ChukwaAgentController cli = new ChukwaAgentController("localhost", portno);
cli.removeAll();
// sleep for some time to make sure we don't get chunk from existing streams
Thread.sleep(5000);
File testFile = makeTestFile();
int startOffset = 0;
long adaptorId = agent
.processCommand("add org.apache.hadoop.chukwa.datacollection.adaptor.filetailer.CharFileTailingAdaptorUTF8 "
+ "lines "
+ startOffset
+ " "
+ testFile
+ " "
+ (startOffset + 29));
assertTrue(adaptorId != -1);
System.out.println("getting a chunk...");
Chunk c = chunks.waitForAChunk();
System.out.println("got chunk");
while (!c.getDataType().equals("lines")) {
c = chunks.waitForAChunk();
}
assertTrue(c.getSeqID() == testFile.length() + startOffset);
assertTrue(c.getRecordOffsets().length == 79);// 80 lines in test file,
// minus the one we skipped
int recStart = 0;
for (int rec = 0; rec < c.getRecordOffsets().length; ++rec) {
String record = new String(c.getData(), recStart,
c.getRecordOffsets()[rec] - recStart + 1);
System.out.println("record " + rec + " was: " + record);
assertTrue(record.equals((rec + 1) + " abcdefghijklmnopqrstuvwxyz\n"));
recStart = c.getRecordOffsets()[rec] + 1;
}
assertTrue(c.getDataType().equals("lines"));
agent.stopAdaptor(adaptorId, false);
agent.shutdown();
}
private File makeTestFile() throws IOException {
File tmpOutput = new File(System.getProperty("test.build.data", "/tmp"),
"chukwaTest");
FileOutputStream fos = new FileOutputStream(tmpOutput);
PrintWriter pw = new PrintWriter(fos);
for (int i = 0; i < 80; ++i) {
pw.print(i + " ");
pw.println("abcdefghijklmnopqrstuvwxyz");
}
pw.flush();
pw.close();
return tmpOutput;
}
}