/*
* 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.twill.yarn;
import com.google.common.base.Charsets;
import com.google.common.base.Preconditions;
import com.google.common.io.ByteStreams;
import com.google.common.io.Files;
import com.google.common.io.LineReader;
import org.apache.twill.api.TwillApplication;
import org.apache.twill.api.TwillController;
import org.apache.twill.api.TwillRunner;
import org.apache.twill.api.TwillSpecification;
import org.apache.twill.api.logging.PrinterLogHandler;
import org.apache.twill.discovery.Discoverable;
import org.junit.Assert;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.util.concurrent.TimeUnit;
import java.util.jar.JarEntry;
import java.util.jar.JarOutputStream;
/**
* Test for local file transfer.
*/
public final class LocalFileTestRun extends BaseYarnTest {
@Test
public void testLocalFile() throws Exception {
String header = Files.readFirstLine(new File(getClass().getClassLoader().getResource("header.txt").toURI()),
Charsets.UTF_8);
TwillRunner runner = YarnTestUtils.getTwillRunner();
TwillController controller = runner.prepare(new LocalFileApplication())
.addJVMOptions(" -verbose:gc -Xloggc:gc.log -XX:+PrintGCDetails")
.withApplicationArguments("local")
.withArguments("LocalFileSocketServer", "local2")
.addLogHandler(new PrinterLogHandler(new PrintWriter(System.out, true)))
.start();
Iterable<Discoverable> discoverables = controller.discoverService("local");
Assert.assertTrue(YarnTestUtils.waitForSize(discoverables, 1, 60));
InetSocketAddress socketAddress = discoverables.iterator().next().getSocketAddress();
Socket socket = new Socket(socketAddress.getAddress(), socketAddress.getPort());
try {
PrintWriter writer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream(), Charsets.UTF_8), true);
LineReader reader = new LineReader(new InputStreamReader(socket.getInputStream(), Charsets.UTF_8));
String msg = "Local file test";
writer.println(msg);
Assert.assertEquals(header, reader.readLine());
Assert.assertEquals(msg, reader.readLine());
} finally {
socket.close();
}
controller.stopAndWait();
Assert.assertTrue(YarnTestUtils.waitForSize(discoverables, 0, 60));
TimeUnit.SECONDS.sleep(2);
}
/**
* Application for testing local file transfer.
*/
public static final class LocalFileApplication implements TwillApplication {
private final File headerFile;
public LocalFileApplication() throws Exception {
// Create a jar file that contains the header.txt file inside.
headerFile = tmpFolder.newFile("header.jar");
JarOutputStream os = new JarOutputStream(new FileOutputStream(headerFile));
try {
os.putNextEntry(new JarEntry("header.txt"));
ByteStreams.copy(getClass().getClassLoader().getResourceAsStream("header.txt"), os);
} finally {
os.close();
}
}
@Override
public TwillSpecification configure() {
return TwillSpecification.Builder.with()
.setName("LocalFileApp")
.withRunnable()
.add(new LocalFileSocketServer())
.withLocalFiles()
.add("header", headerFile, true).apply()
.anyOrder()
.build();
}
}
/**
* SocketServer for testing local file transfer.
*/
public static final class LocalFileSocketServer extends SocketServer {
private static final Logger LOG = LoggerFactory.getLogger(LocalFileSocketServer.class);
@Override
public void handleRequest(BufferedReader reader, PrintWriter writer) throws IOException {
// Verify there is a gc.log file locally
Preconditions.checkState(new File("gc.log").exists());
LOG.info("handleRequest");
String header = Files.toString(new File("header/header.txt"), Charsets.UTF_8);
writer.write(header);
writer.println(reader.readLine());
LOG.info("Flushed response");
}
}
}