/*
* Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
*
* 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.hazelcast.concurrent.lock;
import com.hazelcast.config.Config;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.HazelcastInstanceNotActiveException;
import com.hazelcast.core.ICondition;
import com.hazelcast.core.ILock;
import com.hazelcast.spi.exception.DistributedObjectDestroyedException;
import com.hazelcast.spi.properties.GroupProperty;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
import com.hazelcast.test.TestHazelcastInstanceFactory;
import com.hazelcast.test.annotation.ParallelTest;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import static org.junit.Assert.assertEquals;
@RunWith(HazelcastParallelClassRunner.class)
@Category({QuickTest.class, ParallelTest.class})
public class ConditionAdvancedTest extends HazelcastTestSupport {
@Test(timeout = 60000)
public void testInterruptionDuringWaiting() throws InterruptedException {
Config config = new Config();
// the system should wait at most 5000 ms in order to determine the operation status
config.setProperty(GroupProperty.OPERATION_CALL_TIMEOUT_MILLIS.getName(), "5000");
HazelcastInstance instance = createHazelcastInstance(config);
final ILock lock = instance.getLock(randomString());
final ICondition condition0 = lock.newCondition(randomString());
final CountDownLatch latch = new CountDownLatch(1);
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
try {
lock.lock();
condition0.await();
} catch (InterruptedException e) {
latch.countDown();
}
}
});
thread.start();
sleepSeconds(2);
thread.interrupt();
assertOpenEventually(latch);
}
// ====================== tests to make sure the condition can deal with cluster member failure ====================
@Test(timeout = 100000)
public void testKeyOwnerDiesOnCondition() throws Exception {
final TestHazelcastInstanceFactory nodeFactory = createHazelcastInstanceFactory(3);
final HazelcastInstance keyOwner = nodeFactory.newHazelcastInstance();
final HazelcastInstance instance1 = nodeFactory.newHazelcastInstance();
final HazelcastInstance instance2 = nodeFactory.newHazelcastInstance();
final AtomicInteger signalCounter = new AtomicInteger(0);
final String key = generateKeyOwnedBy(instance1);
final ILock lock1 = instance1.getLock(key);
final String conditionName = randomString();
final ICondition condition1 = lock1.newCondition(conditionName);
Thread t = new Thread(new Runnable() {
public void run() {
ILock lock = instance2.getLock(key);
ICondition condition = lock.newCondition(conditionName);
lock.lock();
try {
condition.await();
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
lock.unlock();
}
signalCounter.incrementAndGet();
}
});
t.start();
Thread.sleep(1000);
lock1.lock();
keyOwner.shutdown();
condition1.signal();
lock1.unlock();
Thread.sleep(1000);
t.join();
assertEquals(1, signalCounter.get());
}
@Test(timeout = 60000, expected = DistributedObjectDestroyedException.class)
public void testDestroyLock_whenOtherWaitingOnConditionAwait() throws InterruptedException {
final TestHazelcastInstanceFactory nodeFactory = createHazelcastInstanceFactory(2);
final HazelcastInstance instance = nodeFactory.newHazelcastInstance();
final ILock lock = instance.getLock(randomString());
final ICondition condition = lock.newCondition("condition");
final CountDownLatch latch = new CountDownLatch(1);
new Thread(new Runnable() {
public void run() {
try {
latch.await(30, TimeUnit.SECONDS);
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
lock.destroy();
}
}).start();
lock.lock();
latch.countDown();
condition.await();
lock.unlock();
}
@Test(timeout = 60000, expected = HazelcastInstanceNotActiveException.class)
public void testShutDownNode_whenOtherWaitingOnConditionAwait() throws InterruptedException {
final TestHazelcastInstanceFactory nodeFactory = createHazelcastInstanceFactory(2);
final HazelcastInstance instance = nodeFactory.newHazelcastInstance();
nodeFactory.newHazelcastInstance();
final String name = randomString();
final ILock lock = instance.getLock(name);
final ICondition condition = lock.newCondition("condition");
final CountDownLatch latch = new CountDownLatch(1);
new Thread(new Runnable() {
public void run() {
try {
latch.await(1, TimeUnit.MINUTES);
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
instance.shutdown();
}
}).start();
lock.lock();
try {
latch.countDown();
condition.await();
} catch (InterruptedException e) {
}
lock.unlock();
}
@Test
public void testLockConditionSignalAllShutDownKeyOwner() throws InterruptedException {
final TestHazelcastInstanceFactory nodeFactory = createHazelcastInstanceFactory(2);
final String name = randomString();
final HazelcastInstance instance = nodeFactory.newHazelcastInstance();
final AtomicInteger count = new AtomicInteger(0);
final int size = 50;
final HazelcastInstance keyOwner = nodeFactory.newHazelcastInstance();
warmUpPartitions(instance, keyOwner);
final String key = generateKeyOwnedBy(keyOwner);
final ILock lock = instance.getLock(key);
final ICondition condition = lock.newCondition(name);
final CountDownLatch awaitLatch = new CountDownLatch(size);
final CountDownLatch finalLatch = new CountDownLatch(size);
for (int i = 0; i < size; i++) {
new Thread(new Runnable() {
public void run() {
lock.lock();
try {
awaitLatch.countDown();
condition.await();
if (lock.isLockedByCurrentThread()) {
count.incrementAndGet();
}
} catch (InterruptedException ignored) {
} finally {
lock.unlock();
finalLatch.countDown();
}
}
}).start();
}
ILock lock1 = keyOwner.getLock(key);
ICondition condition1 = lock1.newCondition(name);
awaitLatch.await(1, TimeUnit.MINUTES);
lock1.lock();
condition1.signalAll();
lock1.unlock();
keyOwner.shutdown();
finalLatch.await(2, TimeUnit.MINUTES);
assertEquals(size, count.get());
}
}