/**
* Logback: the reliable, generic, fast and flexible logging framework.
* Copyright (C) 1999-2013, QOS.ch. All rights reserved.
*
* This program and the accompanying materials are dual-licensed under
* either the terms of the Eclipse Public License v1.0 as published by
* the Eclipse Foundation
*
* or (per the licensee's choosing)
*
* under the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation.
*/
package ch.qos.logback.core.net.server;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import ch.qos.logback.core.net.mock.MockContext;
public class ConcurrentServerRunnerTest {
private static final int DELAY = 10000;
private static final int SHORT_DELAY = 10;
private MockContext context = new MockContext();
private MockServerListener<MockClient> listener =
new MockServerListener<MockClient>();
private ExecutorService executor = Executors.newCachedThreadPool();
private InstrumentedConcurrentServerRunner runner =
new InstrumentedConcurrentServerRunner(listener, executor);
@Before
public void setUp() throws Exception {
runner.setContext(context);
}
@After
public void tearDown() throws Exception {
executor.shutdownNow();
assertTrue(executor.awaitTermination(DELAY, TimeUnit.MILLISECONDS));
}
@Test
public void testStartStop() throws Exception {
assertFalse(runner.isRunning());
executor.execute(runner);
assertTrue(runner.awaitRunState(true, DELAY));
int retries = DELAY / SHORT_DELAY;
synchronized (listener) {
while (retries-- > 0 && listener.getWaiter() == null) {
listener.wait(SHORT_DELAY);
}
}
assertNotNull(listener.getWaiter());
runner.stop();
assertTrue(listener.isClosed());
assertFalse(runner.awaitRunState(false, DELAY));
}
@Test
public void testRunOneClient() throws Exception {
executor.execute(runner);
MockClient client = new MockClient();
listener.addClient(client);
int retries = DELAY / SHORT_DELAY;
synchronized (client) {
while (retries-- > 0 && !client.isRunning()) {
client.wait(SHORT_DELAY);
}
}
assertTrue(runner.awaitRunState(true, DELAY));
client.close();
runner.stop();
}
@Test
public void testRunManyClients() throws Exception {
executor.execute(runner);
int count = 10;
while (count-- > 0) {
MockClient client = new MockClient();
listener.addClient(client);
int retries = DELAY / SHORT_DELAY;
synchronized (client) {
while (retries-- > 0 && !client.isRunning()) {
client.wait(SHORT_DELAY);
}
}
assertTrue(runner.awaitRunState(true, DELAY));
}
runner.stop();
}
@Test
public void testRunClientAndVisit() throws Exception {
executor.execute(runner);
MockClient client = new MockClient();
listener.addClient(client);
int retries = DELAY / SHORT_DELAY;
synchronized (client) {
while (retries-- > 0 && !client.isRunning()) {
client.wait(SHORT_DELAY);
}
}
assertTrue(runner.awaitRunState(true, DELAY));
MockClientVisitor visitor = new MockClientVisitor();
runner.accept(visitor);
assertSame(client, visitor.getLastVisited());
runner.stop();
}
static class InstrumentedConcurrentServerRunner
extends ConcurrentServerRunner<MockClient> {
private final Lock lock = new ReentrantLock();
private final Condition runningCondition = lock.newCondition();
public InstrumentedConcurrentServerRunner(
ServerListener<MockClient> listener, Executor executor) {
super(listener, executor);
}
@Override
protected boolean configureClient(MockClient client) {
return true;
}
@Override
protected void setRunning(boolean running) {
lock.lock();
try {
super.setRunning(running);
runningCondition.signalAll();
}
finally {
lock.unlock();
}
}
public boolean awaitRunState(boolean state,
long delay) throws InterruptedException {
lock.lock();
try {
while (isRunning() != state) {
runningCondition.await(delay, TimeUnit.MILLISECONDS);
}
return isRunning();
}
finally {
lock.unlock();
}
}
}
}