package com.hazelcast.map;
import com.hazelcast.config.Config;
import com.hazelcast.config.MapConfig;
import com.hazelcast.core.Hazelcast;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.IMap;
import com.hazelcast.core.LifecycleEvent;
import com.hazelcast.core.LifecycleListener;
import com.hazelcast.core.MemberAttributeEvent;
import com.hazelcast.core.MembershipEvent;
import com.hazelcast.core.MembershipListener;
import com.hazelcast.instance.GroupProperties;
import com.hazelcast.instance.HazelcastInstanceFactory;
import com.hazelcast.instance.Node;
import com.hazelcast.instance.TestUtil;
import com.hazelcast.map.merge.HigherHitsMapMergePolicy;
import com.hazelcast.map.merge.LatestUpdateMapMergePolicy;
import com.hazelcast.map.merge.PassThroughMergePolicy;
import com.hazelcast.map.merge.PutIfAbsentMapMergePolicy;
import com.hazelcast.test.HazelcastSerialClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
import com.hazelcast.test.annotation.NightlyTest;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import java.util.concurrent.CountDownLatch;
import static junit.framework.TestCase.assertEquals;
@RunWith(HazelcastSerialClassRunner.class)
@Category(NightlyTest.class)
public class MergePolicyTest extends HazelcastTestSupport {
@Before
@After
public void killAllHazelcastInstances() {
HazelcastInstanceFactory.terminateAll();
}
@Test
public void testLatestUpdateMapMergePolicy() {
String mapName = randomMapName();
Config config = newConfig(LatestUpdateMapMergePolicy.class.getName(), mapName);
HazelcastInstance h1 = Hazelcast.newHazelcastInstance(config);
HazelcastInstance h2 = Hazelcast.newHazelcastInstance(config);
TestMemberShipListener memberShipListener = new TestMemberShipListener(1);
h2.getCluster().addMembershipListener(memberShipListener);
TestLifeCycleListener lifeCycleListener = new TestLifeCycleListener(1);
h2.getLifecycleService().addLifecycleListener(lifeCycleListener);
closeConnectionBetween(h1, h2);
assertOpenEventually(memberShipListener.latch);
assertClusterSizeEventually(1, h1);
assertClusterSizeEventually(1, h2);
IMap<Object, Object> map1 = h1.getMap(mapName);
IMap<Object, Object> map2 = h2.getMap(mapName);
map1.put("key1", "value");
//prevent updating at the same time
sleepMillis(1);
map2.put("key1", "LatestUpdatedValue");
map2.put("key2", "value2");
//prevent updating at the same time
sleepMillis(1);
map1.put("key2", "LatestUpdatedValue2");
assertOpenEventually(lifeCycleListener.latch);
assertClusterSizeEventually(2, h1);
assertClusterSizeEventually(2, h2);
IMap<Object, Object> mapTest = h1.getMap(mapName);
assertEquals("LatestUpdatedValue", mapTest.get("key1"));
assertEquals("LatestUpdatedValue2", mapTest.get("key2"));
}
@Test
public void testHigherHitsMapMergePolicy() {
String mapName = randomMapName();
Config config = newConfig(HigherHitsMapMergePolicy.class.getName(), mapName);
HazelcastInstance h1 = Hazelcast.newHazelcastInstance(config);
HazelcastInstance h2 = Hazelcast.newHazelcastInstance(config);
TestMemberShipListener memberShipListener = new TestMemberShipListener(1);
h2.getCluster().addMembershipListener(memberShipListener);
TestLifeCycleListener lifeCycleListener = new TestLifeCycleListener(1);
h2.getLifecycleService().addLifecycleListener(lifeCycleListener);
closeConnectionBetween(h1, h2);
assertOpenEventually(memberShipListener.latch);
assertClusterSizeEventually(1, h1);
assertClusterSizeEventually(1, h2);
IMap<Object, Object> map1 = h1.getMap(mapName);
map1.put("key1", "higherHitsValue");
map1.put("key2", "value2");
//increase hits number
map1.get("key1");
map1.get("key1");
IMap<Object, Object> map2 = h2.getMap(mapName);
map2.put("key1", "value1");
map2.put("key2", "higherHitsValue2");
//increase hits number
map2.get("key2");
map2.get("key2");
assertOpenEventually(lifeCycleListener.latch);
assertClusterSizeEventually(2, h1);
assertClusterSizeEventually(2, h2);
IMap<Object, Object> mapTest = h2.getMap(mapName);
assertEquals("higherHitsValue", mapTest.get("key1"));
assertEquals("higherHitsValue2", mapTest.get("key2"));
}
@Test
public void testPutIfAbsentMapMergePolicy() {
String mapName = randomMapName();
Config config = newConfig(PutIfAbsentMapMergePolicy.class.getName(), mapName);
HazelcastInstance h1 = Hazelcast.newHazelcastInstance(config);
HazelcastInstance h2 = Hazelcast.newHazelcastInstance(config);
TestMemberShipListener memberShipListener = new TestMemberShipListener(1);
h2.getCluster().addMembershipListener(memberShipListener);
TestLifeCycleListener lifeCycleListener = new TestLifeCycleListener(1);
h2.getLifecycleService().addLifecycleListener(lifeCycleListener);
closeConnectionBetween(h1, h2);
assertOpenEventually(memberShipListener.latch);
assertClusterSizeEventually(1, h1);
assertClusterSizeEventually(1, h2);
IMap<Object, Object> map1 = h1.getMap(mapName);
map1.put("key1", "PutIfAbsentValue1");
IMap<Object, Object> map2 = h2.getMap(mapName);
map2.put("key1", "value");
map2.put("key2", "PutIfAbsentValue2");
assertOpenEventually(lifeCycleListener.latch);
assertClusterSizeEventually(2, h1);
assertClusterSizeEventually(2, h2);
IMap<Object, Object> mapTest = h2.getMap(mapName);
assertEquals("PutIfAbsentValue1", mapTest.get("key1"));
assertEquals("PutIfAbsentValue2", mapTest.get("key2"));
}
@Test
public void testPassThroughMapMergePolicy() {
String mapName = randomMapName();
Config config = newConfig(PassThroughMergePolicy.class.getName(), mapName);
HazelcastInstance h1 = Hazelcast.newHazelcastInstance(config);
HazelcastInstance h2 = Hazelcast.newHazelcastInstance(config);
TestMemberShipListener memberShipListener = new TestMemberShipListener(1);
h2.getCluster().addMembershipListener(memberShipListener);
TestLifeCycleListener lifeCycleListener = new TestLifeCycleListener(1);
h2.getLifecycleService().addLifecycleListener(lifeCycleListener);
closeConnectionBetween(h1, h2);
assertOpenEventually(memberShipListener.latch);
assertClusterSizeEventually(1, h1);
assertClusterSizeEventually(1, h2);
IMap<Object, Object> map1 = h1.getMap(mapName);
String key = generateKeyOwnedBy(h1);
map1.put(key, "value");
IMap<Object, Object> map2 = h2.getMap(mapName);
map2.put(key, "passThroughValue");
assertOpenEventually(lifeCycleListener.latch);
assertClusterSizeEventually(2, h1);
assertClusterSizeEventually(2, h2);
IMap<Object, Object> mapTest = h2.getMap(mapName);
assertEquals("passThroughValue", mapTest.get(key));
}
private Config newConfig(String mergePolicy, String mapName) {
Config config = new Config();
config.setProperty(GroupProperties.PROP_MERGE_FIRST_RUN_DELAY_SECONDS, "5");
config.setProperty(GroupProperties.PROP_MERGE_NEXT_RUN_DELAY_SECONDS, "3");
MapConfig mapConfig = config.getMapConfig(mapName);
mapConfig.setMergePolicy(mergePolicy);
return config;
}
private void closeConnectionBetween(HazelcastInstance h1, HazelcastInstance h2) {
if (h1 == null || h2 == null) return;
final Node n1 = TestUtil.getNode(h1);
final Node n2 = TestUtil.getNode(h2);
n1.clusterService.removeAddress(n2.address);
n2.clusterService.removeAddress(n1.address);
}
private class TestLifeCycleListener implements LifecycleListener {
CountDownLatch latch;
TestLifeCycleListener(int countdown) {
latch = new CountDownLatch(countdown);
}
@Override
public void stateChanged(LifecycleEvent event) {
if (event.getState() == LifecycleEvent.LifecycleState.MERGED) {
latch.countDown();
}
}
}
private class TestMemberShipListener implements MembershipListener {
final CountDownLatch latch;
TestMemberShipListener(int countdown) {
latch = new CountDownLatch(countdown);
}
@Override
public void memberAdded(MembershipEvent membershipEvent) {
}
@Override
public void memberRemoved(MembershipEvent membershipEvent) {
latch.countDown();
}
@Override
public void memberAttributeChanged(MemberAttributeEvent memberAttributeEvent) {
}
}
}