/*
* 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 org.apache.twill.api.AbstractTwillRunnable;
import org.apache.twill.api.ResourceReport;
import org.apache.twill.api.TwillApplication;
import org.apache.twill.api.TwillController;
import org.apache.twill.api.TwillRunResources;
import org.apache.twill.api.TwillSpecification;
import org.apache.twill.api.logging.PrinterLogHandler;
import org.apache.twill.common.ServiceListenerAdapter;
import org.apache.twill.common.Threads;
import org.junit.Assert;
import org.junit.Test;
import java.io.PrintWriter;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
/**
* Tests whether starting containers with debugging on works.
*/
public class DebugTestRun extends BaseYarnTest {
/**
* An application that contains two {@link DummyRunnable}.
*/
public static final class DummyApplication implements TwillApplication {
@Override
public TwillSpecification configure() {
return TwillSpecification.Builder.with()
.setName("DummyApp")
.withRunnable()
.add("r1", new DummyRunnable()).noLocalFiles()
.add("r2", new DummyRunnable()).noLocalFiles()
.anyOrder()
.build();
}
}
/**
* A Runnable that will sleep in a loop until stopped.
*/
public static final class DummyRunnable extends AbstractTwillRunnable {
private volatile Thread runThread;
@Override
public void run() {
this.runThread = Thread.currentThread();
while (!Thread.interrupted()) {
try {
TimeUnit.MILLISECONDS.sleep(100);
} catch (InterruptedException e) {
break;
}
}
}
@Override
public void stop() {
if (runThread != null) {
runThread.interrupt();
}
}
}
private boolean waitForDebugPort(TwillController controller, String runnable, int timeLimit)
throws InterruptedException {
long millis = 0;
while (millis < 1000 * timeLimit) {
ResourceReport report = controller.getResourceReport();
if (report == null || report.getRunnableResources(runnable) == null) {
continue;
}
for (TwillRunResources resources : report.getRunnableResources(runnable)) {
if (resources.getDebugPort() != null) {
return true;
}
}
TimeUnit.MILLISECONDS.sleep(100);
millis += 100;
}
return false;
}
@Test
public void testDebugPortOneRunnable() throws Exception {
YarnTwillRunnerService runner = (YarnTwillRunnerService) YarnTestUtils.getTwillRunner();
runner.startAndWait();
TwillController controller = runner.prepare(new DummyApplication())
.enableDebugging("r1")
.addLogHandler(new PrinterLogHandler(new PrintWriter(System.out)))
.start();
final CountDownLatch running = new CountDownLatch(1);
controller.addListener(new ServiceListenerAdapter() {
@Override
public void running() {
running.countDown();
}
}, Threads.SAME_THREAD_EXECUTOR);
Assert.assertTrue(running.await(30, TimeUnit.SECONDS));
Assert.assertTrue(waitForDebugPort(controller, "r1", 30));
controller.stop().get(30, TimeUnit.SECONDS);
// Sleep a bit before exiting.
TimeUnit.SECONDS.sleep(2);
}
@Test
public void testDebugPortAllRunnables() throws Exception {
YarnTwillRunnerService runner = (YarnTwillRunnerService) YarnTestUtils.getTwillRunner();
runner.startAndWait();
TwillController controller = runner.prepare(new DummyApplication())
.enableDebugging()
.addLogHandler(new PrinterLogHandler(new PrintWriter(System.out)))
.start();
final CountDownLatch running = new CountDownLatch(1);
controller.addListener(new ServiceListenerAdapter() {
@Override
public void running() {
running.countDown();
}
}, Threads.SAME_THREAD_EXECUTOR);
Assert.assertTrue(running.await(30, TimeUnit.SECONDS));
Assert.assertTrue(waitForDebugPort(controller, "r1", 30));
Assert.assertTrue(waitForDebugPort(controller, "r2", 30));
controller.stop().get(30, TimeUnit.SECONDS);
// Sleep a bit before exiting.
TimeUnit.SECONDS.sleep(2);
}
}