/*
* 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.topic.impl.reliable;
import com.hazelcast.core.ITopic;
import com.hazelcast.ringbuffer.Ringbuffer;
import com.hazelcast.spi.serialization.SerializationService;
import com.hazelcast.test.AssertTask;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
import com.hazelcast.test.annotation.ParallelTest;
import com.hazelcast.test.annotation.QuickTest;
import com.hazelcast.topic.TopicOverloadException;
import com.hazelcast.util.EmptyStatement;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import java.util.concurrent.Future;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.fail;
@RunWith(HazelcastParallelClassRunner.class)
@Category({QuickTest.class, ParallelTest.class})
public abstract class TopicOverloadAbstractTest extends HazelcastTestSupport {
protected ITopic<String> topic;
protected Ringbuffer<ReliableTopicMessage> ringbuffer;
protected SerializationService serializationService;
@Test
public void whenError_andSpace() throws Exception {
test_whenSpace();
}
@Test
public void whenDiscardNewest_andSpace() throws Exception {
test_whenSpace();
}
@Test
public void whenDiscardOldest_andSpace() throws Exception {
test_whenSpace();
}
@Test
public void test_whenSpace() throws Exception {
topic.publish("foo");
ReliableTopicMessage msg = ringbuffer.readOne(0);
assertEquals("foo", serializationService.toObject(msg.getPayload()));
}
@Test
public void whenError_andNoSpace() {
for (int k = 0; k < ringbuffer.capacity(); k++) {
topic.publish("old");
}
long tail = ringbuffer.tailSequence();
long head = ringbuffer.headSequence();
try {
topic.publish("new");
fail();
} catch (TopicOverloadException expected) {
EmptyStatement.ignore(expected);
}
assertEquals(tail, ringbuffer.tailSequence());
assertEquals(head, ringbuffer.headSequence());
}
@Test
public void whenDiscardOldest_whenNoSpace() {
for (int k = 0; k < ringbuffer.capacity(); k++) {
topic.publish("old");
}
long tail = ringbuffer.tailSequence();
long head = ringbuffer.headSequence();
topic.publish("new");
// check that an item has been added
assertEquals(tail + 1, ringbuffer.tailSequence());
assertEquals(head + 1, ringbuffer.headSequence());
}
@Test
public void whenDiscardNewest_whenNoSpace() {
for (int k = 0; k < ringbuffer.capacity(); k++) {
topic.publish("old");
}
long tail = ringbuffer.tailSequence();
long head = ringbuffer.headSequence();
topic.publish("new");
// check that nothing has changed
assertEquals(tail, ringbuffer.tailSequence());
assertEquals(head, ringbuffer.headSequence());
}
@Test
public void whenBlock_whenNoSpace() {
for (int k = 0; k < ringbuffer.capacity(); k++) {
topic.publish("old");
}
final long tail = ringbuffer.tailSequence();
final long head = ringbuffer.headSequence();
// add the item
final Future f = spawn(new Runnable() {
@Override
public void run() {
topic.publish("new");
}
});
assertTrueAllTheTime(new AssertTask() {
@Override
public void run() throws Exception {
assertFalse(f.isDone());
assertEquals(tail, ringbuffer.tailSequence());
assertEquals(head, ringbuffer.headSequence());
}
}, 5);
}
}