package com.hazelcast.queue;
import com.hazelcast.core.IQueue;
import com.hazelcast.core.ItemEvent;
import com.hazelcast.core.ItemListener;
import com.hazelcast.monitor.LocalQueueStats;
import com.hazelcast.test.AssertTask;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import java.util.ArrayList;
import java.util.concurrent.CountDownLatch;
import static org.junit.Assert.assertEquals;
@RunWith(HazelcastParallelClassRunner.class)
@Category(QuickTest.class)
public class QueueStatisticsTest extends AbstractQueueTest {
@Test
public void testItemCount() {
IQueue queue = newQueue();
int items = 20;
for (int i = 0; i < items; i++) {
queue.offer("item" + i);
}
LocalQueueStats stats = queue.getLocalQueueStats();
assertEquals(20, stats.getOwnedItemCount());
assertEquals(0, stats.getBackupItemCount());
}
@Test
public void testOfferOperationCount() throws InterruptedException {
IQueue queue = newQueue();
for (int i = 0; i < 10; i++) {
queue.offer("item" + i);
}
for (int i = 0; i < 10; i++) {
queue.add("item" + i);
}
for (int i = 0; i < 10; i++) {
queue.put("item" + i);
}
final LocalQueueStats stats = queue.getLocalQueueStats();
AssertTask task = new AssertTask() {
@Override
public void run() throws Exception {
assertEquals(30, stats.getOfferOperationCount());
}
};
assertTrueEventually(task);
}
@Test
public void testRejectedOfferOperationCount() {
IQueue queue = newQueue_WithMaxSizeConfig(30);
for (int i = 0; i < 30; i++) {
queue.offer("item" + i);
}
for (int i = 0; i < 10; i++) {
queue.offer("item" + i);
}
final LocalQueueStats stats = queue.getLocalQueueStats();
AssertTask task = new AssertTask() {
@Override
public void run() throws Exception {
assertEquals(10, stats.getRejectedOfferOperationCount());
}
};
assertTrueEventually(task);
}
@Test
public void testPollOperationCount() throws InterruptedException {
IQueue queue = newQueue();
for (int i = 0; i < 30; i++) {
queue.offer("item" + i);
}
for (int i = 0; i < 10; i++) {
queue.remove();
}
for (int i = 0; i < 10; i++) {
queue.take();
}
for (int i = 0; i < 10; i++) {
queue.poll();
}
final LocalQueueStats stats = queue.getLocalQueueStats();
AssertTask task = new AssertTask() {
@Override
public void run() throws Exception {
assertEquals(30, stats.getPollOperationCount());
}
};
assertTrueEventually(task);
}
@Test
public void testEmptyPollOperationCount() {
IQueue queue = newQueue();
for (int i = 0; i < 10; i++) {
queue.poll();
}
final LocalQueueStats stats = queue.getLocalQueueStats();
AssertTask task = new AssertTask() {
@Override
public void run() throws Exception {
assertEquals(10, stats.getEmptyPollOperationCount());
}
};
assertTrueEventually(task);
}
@Test
public void testOtherOperationCount() {
IQueue queue = newQueue();
for (int i = 0; i < 30; i++) {
queue.offer("item" + i);
}
ArrayList<String> list = new ArrayList<String>();
queue.drainTo(list);
queue.addAll(list);
queue.removeAll(list);
final LocalQueueStats stats = queue.getLocalQueueStats();
AssertTask task = new AssertTask() {
@Override
public void run() throws Exception {
assertEquals(3, stats.getOtherOperationsCount());
}
};
assertTrueEventually(task);
}
@Test
public void testAge() {
IQueue queue = newQueue();
queue.offer("maxAgeItem");
queue.offer("minAgeItem");
LocalQueueStats stats = queue.getLocalQueueStats();
long maxAge = stats.getMaxAge();
long minAge = stats.getMinAge();
long testAge = (maxAge + minAge) / 2;
long avgAge = stats.getAvgAge();
assertEquals(testAge, avgAge);
}
@Test
public void testEventOperationCount() {
IQueue queue = newQueue();
TestListener listener = new TestListener(30);
queue.addItemListener(listener, true);
for (int i = 0; i < 30; i++) {
queue.offer("item" + i);
}
for (int i = 0; i < 30; i++) {
queue.poll();
}
LocalQueueStats stats = queue.getLocalQueueStats();
assertOpenEventually(listener.addedLatch);
assertOpenEventually(listener.removedLatch);
assertEquals(60, stats.getEventOperationCount());
}
private static class TestListener implements ItemListener {
public final CountDownLatch addedLatch;
public final CountDownLatch removedLatch;
public TestListener(int latchCount) {
addedLatch = new CountDownLatch(latchCount);
removedLatch = new CountDownLatch(latchCount);
}
public void itemAdded(ItemEvent item) {
addedLatch.countDown();
}
public void itemRemoved(ItemEvent item) {
removedLatch.countDown();
}
}
}