/*
* 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.countdownlatch;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.ICountDownLatch;
import com.hazelcast.test.HazelcastSerialClassRunner;
import com.hazelcast.test.SplitBrainTestSupport;
import com.hazelcast.test.annotation.ParallelTest;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import static org.junit.Assert.assertEquals;
@RunWith(HazelcastSerialClassRunner.class)
@Category({QuickTest.class, ParallelTest.class})
public class CountDownLatchSplitBrainTest extends SplitBrainTestSupport {
private String name;
private int count = 5;
@Override
protected int[] brains() {
// 2nd merges to the 1st
return new int[]{2, 1};
}
@Override
protected void onBeforeSplitBrainCreated(HazelcastInstance[] instances) throws Exception {
warmUpPartitions(instances);
name = generateKeyOwnedBy(instances[instances.length - 1]);
ICountDownLatch latch = instances[0].getCountDownLatch(name);
latch.trySetCount(count);
waitAllForSafeState(instances);
}
@Override
protected void onAfterSplitBrainCreated(HazelcastInstance[] firstBrain, HazelcastInstance[] secondBrain)
throws Exception {
ICountDownLatch latch1 = firstBrain[0].getCountDownLatch(name);
// count = 4
latch1.countDown();
count = latch1.getCount();
ICountDownLatch latch2 = secondBrain[0].getCountDownLatch(name);
// count = 0
while (latch2.getCount() > 0) {
latch2.countDown();
}
}
@Override
protected void onAfterSplitBrainHealed(HazelcastInstance[] instances) throws Exception {
for (HazelcastInstance instance : instances) {
ICountDownLatch latch = instance.getCountDownLatch(name);
assertEquals(count, latch.getCount());
}
}
}