/*
* Copyright (C) 2010-2101 Alibaba Group Holding Limited.
*
* Licensed 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 com.alibaba.otter.shared.arbitrate.zookeeper;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.apache.commons.lang.math.RandomUtils;
import org.apache.zookeeper.KeeperException;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
import com.alibaba.otter.shared.arbitrate.BaseEventTest;
import com.alibaba.otter.shared.arbitrate.impl.zookeeper.lock.DistributedLock;
/**
* @author jianghang 2011-9-29 下午02:36:19
* @version 4.0.0
*/
public class DistributedLockTest extends BaseEventTest {
private final String dir = "/" + getClass().getSimpleName();
@BeforeClass
public void init() {
getZookeeper();
}
@Test
protected void test_lock() {
ExecutorService exeucotr = Executors.newCachedThreadPool();
final int count = 50;
final CountDownLatch latch = new CountDownLatch(count);
final DistributedLock[] nodes = new DistributedLock[count];
for (int i = 0; i < count; i++) {
final DistributedLock node = new DistributedLock(dir);
nodes[i] = node;
exeucotr.submit(new Runnable() {
public void run() {
try {
node.lock();
Thread.sleep(100 + RandomUtils.nextInt(100));
System.out.println("id: " + node.getId() + " is leader: " + node.isOwner());
} catch (InterruptedException e) {
want.fail();
} catch (KeeperException e) {
want.fail();
} finally {
latch.countDown();
try {
node.unlock();
} catch (KeeperException e) {
want.fail();
}
}
}
});
}
try {
latch.await();
} catch (InterruptedException e) {
want.fail();
}
exeucotr.shutdown();
}
@Test
protected void test_try_lock() {
ExecutorService exeucotr = Executors.newCachedThreadPool();
final int count = 50;
final CountDownLatch latch = new CountDownLatch(count);
final DistributedLock[] nodes = new DistributedLock[count];
for (int i = 0; i < count; i++) {
final DistributedLock node = new DistributedLock(dir);
nodes[i] = node;
exeucotr.submit(new Runnable() {
public void run() {
try {
while (node.tryLock() == false) {
Thread.sleep(100 + RandomUtils.nextInt(100));
}
System.out.println("id: " + node.getId() + " is leader: " + node.isOwner());
} catch (InterruptedException e) {
want.fail();
} catch (KeeperException e) {
want.fail();
} finally {
latch.countDown();
try {
node.unlock();
} catch (KeeperException e) {
want.fail();
}
}
}
});
}
try {
latch.await();
} catch (InterruptedException e) {
want.fail();
}
exeucotr.shutdown();
}
}