/*
* 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.spi.impl.operationparker.impl;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.IQueue;
import com.hazelcast.core.Member;
import com.hazelcast.test.HazelcastParallelClassRunner;
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;
@RunWith(HazelcastParallelClassRunner.class)
@Category({QuickTest.class, ParallelTest.class})
public class WaitNotifySplitBrainTest extends SplitBrainTestSupport {
private static final int POLLERS_COUNT = 1000;
private String queueName;
@Override
protected void onBeforeSplitBrainCreated(HazelcastInstance[] instances) {
HazelcastInstance hz1 = instances[0];
queueName = generateKeyOwnedBy(hz1);
final IQueue<Object> queue = hz1.getQueue(queueName);
startTakingFromQueue(queue);
assertTakeOperationsAreWaitingEventually(hz1);
}
@Override
protected void onAfterSplitBrainHealed(HazelcastInstance[] instances) {
assertOnlyOwnerHasWaitingOperationsEventually(queueName, instances);
final IQueue<Object> queue = instances[0].getQueue(queueName);
for (int i = 0; i < POLLERS_COUNT; i++) {
queue.offer(i);
}
assertWaitingOperationCountEventually(0, instances);
}
private void assertOnlyOwnerHasWaitingOperationsEventually(String name, HazelcastInstance... instances) {
for (HazelcastInstance hz : instances) {
Member owner = hz.getPartitionService().getPartition(name).getOwner();
int expectedWaitingOps = owner.equals(hz.getCluster().getLocalMember()) ? POLLERS_COUNT : 0;
assertWaitingOperationCountEventually(expectedWaitingOps, hz);
}
}
private void startTakingFromQueue(final IQueue<Object> queue) {
for (int i = 0; i < POLLERS_COUNT; i++) {
new Thread() {
public void run() {
try {
queue.take();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}.start();
}
}
private void assertTakeOperationsAreWaitingEventually(HazelcastInstance instance) {
assertWaitingOperationCountEventually(POLLERS_COUNT, instance);
}
}