package com.hazelcast.map.mapstore.writebehind;
import com.hazelcast.map.impl.mapstore.writebehind.DelayedEntry;
import com.hazelcast.map.impl.mapstore.writebehind.ReachedMaxSizeException;
import com.hazelcast.map.impl.mapstore.writebehind.WriteBehindQueue;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.nio.serialization.DefaultSerializationServiceBuilder;
import com.hazelcast.nio.serialization.SerializationService;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
import com.hazelcast.test.annotation.QuickTest;
import com.hazelcast.util.Clock;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import java.util.concurrent.atomic.AtomicInteger;
import static com.hazelcast.map.impl.mapstore.writebehind.WriteBehindQueues.createDefaultWriteBehindQueue;
import static com.hazelcast.map.impl.mapstore.writebehind.WriteBehindQueues.createSafeBoundedArrayWriteBehindQueue;
import static org.junit.Assert.assertEquals;
@RunWith(HazelcastParallelClassRunner.class)
@Category(QuickTest.class)
public class WriteBehindQueueTest extends HazelcastTestSupport {
@Test
public void smoke() {
final WriteBehindQueue<DelayedEntry> queue = createWBQ();
assertEquals(0, queue.size());
}
@Test
public void testOffer() {
final WriteBehindQueue<DelayedEntry> queue = createWBQ();
fillQueue(queue, 1000);
assertEquals(1000, queue.size());
}
@Test(expected = ReachedMaxSizeException.class)
public void testWBQMaxSizeException() {
final WriteBehindQueue<DelayedEntry> queue = createBoundedWBQ();
// put total 1001 items. Max allowed is 1000.
fillQueue(queue, 1001);
}
@Test(expected = ReachedMaxSizeException.class)
public void testWBQMaxSizeException_withMultipleWBQ() {
final AtomicInteger counter = new AtomicInteger(0);
final WriteBehindQueue<DelayedEntry> queue1 = createBoundedWBQ(counter);
final WriteBehindQueue<DelayedEntry> queue2 = createBoundedWBQ(counter);
final WriteBehindQueue<DelayedEntry> queue3 = createBoundedWBQ(counter);
final WriteBehindQueue<DelayedEntry> queue4 = createBoundedWBQ(counter);
// put total 1001 items. Max allowed is 1000.
fillQueue(queue1, 10);
fillQueue(queue2, 500);
fillQueue(queue3, 400);
fillQueue(queue4, 91);
}
@Test
public void testWBQ_counter_is_zero() {
final AtomicInteger counter = new AtomicInteger(0);
final WriteBehindQueue<DelayedEntry> queue = createBoundedWBQ(counter);
fillQueue(queue, 100);
queue.clear();
assertEquals(0, counter.intValue());
}
@Test
public void testOffer_thenRemove_thenOffer() {
final WriteBehindQueue<DelayedEntry> queue = createWBQ();
fillQueue(queue, 1000);
queue.removeAll();
fillQueue(queue, 1000);
assertEquals(1000, queue.size());
}
@Test
public void testCounter_offer_thenRemove() {
final AtomicInteger counter = new AtomicInteger(0);
final WriteBehindQueue<DelayedEntry> queue = createBoundedWBQ(counter);
fillQueue(queue, 1000);
queue.removeAll();
assertEquals(0, counter.intValue());
}
@Test
public void testRemoveEmpty() {
final WriteBehindQueue<DelayedEntry> queue = createWBQ();
queue.removeFirst();
assertEquals(0, queue.size());
}
@Test
public void testClear() {
final WriteBehindQueue<DelayedEntry> queue = createWBQ();
queue.clear();
assertEquals(0, queue.size());
}
@Test
public void testClearFull() {
final WriteBehindQueue<DelayedEntry> queue = createWBQ();
fillQueue(queue, 1000);
queue.clear();
assertEquals(0, queue.size());
}
@Test
public void testRemoveAll() {
final WriteBehindQueue<DelayedEntry> queue = createWBQ();
fillQueue(queue, 1000);
queue.removeAll();
assertEquals(0, queue.size());
}
private void fillQueue(WriteBehindQueue queue, int numberOfItems) {
SerializationService ss1 = new DefaultSerializationServiceBuilder().build();
final long storeTime = Clock.currentTimeMillis();
for (int i = 0; i < numberOfItems; i++) {
final DelayedEntry<Data, Object> e = DelayedEntry.createWithNullValue(ss1.toData(i), storeTime, i);
queue.offer(e);
}
}
private WriteBehindQueue createBoundedWBQ() {
final AtomicInteger counter = new AtomicInteger(0);
return createBoundedWBQ(counter);
}
private WriteBehindQueue createBoundedWBQ(AtomicInteger counter) {
final int maxSizePerNode = 1000;
return createSafeBoundedArrayWriteBehindQueue(maxSizePerNode, counter);
}
private WriteBehindQueue createWBQ() {
return createDefaultWriteBehindQueue();
}
}