/*
* 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.map.impl.mapstore.writebehind;
import com.hazelcast.core.IMap;
import com.hazelcast.map.ReachedMaxSizeException;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
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 static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* This test is targeted to be used when {@link com.hazelcast.config.MapStoreConfig#writeCoalescing} is set false.
* When it is false, this means we are trying to persist all updates on an entry in contrast with write-coalescing.
*/
@RunWith(HazelcastParallelClassRunner.class)
@Category({QuickTest.class, ParallelTest.class})
public class WriteBehindItemCounterTest extends HazelcastTestSupport {
@Test
public void testCounter_against_one_node_zero_backup() throws Exception {
final int maxCapacityPerNode = 100;
final MapStoreWithCounter<Integer, Integer> mapStore = new MapStoreWithCounter<Integer, Integer>();
final IMap<Integer, Integer> map = TestMapUsingMapStoreBuilder.<Integer, Integer>create()
.withMapStore(mapStore)
.withNodeCount(1)
.withNodeFactory(createHazelcastInstanceFactory(1))
.withBackupCount(0)
.withWriteDelaySeconds(100)
.withWriteCoalescing(false)
.withWriteBehindQueueCapacity(maxCapacityPerNode)
.build();
populateMap(map, maxCapacityPerNode);
assertEquals(maxCapacityPerNode, map.size());
}
@Test
public void testCounter_against_many_nodes() throws Exception {
final int maxCapacityPerNode = 100;
final int nodeCount = 2;
final MapStoreWithCounter<Integer, Integer> mapStore = new MapStoreWithCounter<Integer, Integer>();
final IMap<Integer, Integer> map = TestMapUsingMapStoreBuilder.<Integer, Integer>create()
.withMapStore(mapStore)
.withNodeCount(nodeCount)
.withNodeFactory(createHazelcastInstanceFactory(nodeCount))
.withBackupCount(0)
.withWriteCoalescing(false)
.withWriteBehindQueueCapacity(maxCapacityPerNode)
.withWriteDelaySeconds(100)
.build();
// put slightly more number of entries which is higher than max write-behind queue capacity per node
populateMap(map, maxCapacityPerNode + 3);
assertTrue(map.size() > maxCapacityPerNode);
}
@Test(expected = ReachedMaxSizeException.class)
public void testCounter_whenMaxCapacityExceeded() throws Exception {
final int maxCapacityPerNode = 100;
final int nodeCount = 1;
final MapStoreWithCounter<Integer, Integer> mapStore = new MapStoreWithCounter<Integer, Integer>();
final IMap<Integer, Integer> map = TestMapUsingMapStoreBuilder.<Integer, Integer>create()
.withMapStore(mapStore)
.withNodeCount(nodeCount)
.withNodeFactory(createHazelcastInstanceFactory(1))
.withBackupCount(0)
.withWriteCoalescing(false)
.withWriteBehindQueueCapacity(maxCapacityPerNode)
.withWriteDelaySeconds(100)
.build();
// exceed max write-behind queue capacity per node
populateMap(map, 2 * maxCapacityPerNode);
}
private void populateMap(IMap<Integer, Integer> map, int numberOfItems) {
for (int i = 0; i < numberOfItems; i++) {
map.put(i, i);
}
}
}