/*
* Copyright (c) 2008-2013, 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.client.multimap;
import com.hazelcast.client.HazelcastClient;
import com.hazelcast.core.Hazelcast;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.MultiMap;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import static com.hazelcast.test.HazelcastTestSupport.assertJoinable;
import static com.hazelcast.test.HazelcastTestSupport.assertOpenEventually;
import static com.hazelcast.test.HazelcastTestSupport.randomString;
import static com.hazelcast.test.HazelcastTestSupport.sleepSeconds;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
@RunWith(HazelcastParallelClassRunner.class)
@Category(QuickTest.class)
public class ClientMultiMapLockTest {
static HazelcastInstance server;
static HazelcastInstance client;
@BeforeClass
public static void init() {
server = Hazelcast.newHazelcastInstance();
client = HazelcastClient.newHazelcastClient();
}
@AfterClass
public static void destroy() {
HazelcastClient.shutdownAll();
Hazelcast.shutdownAll();
}
@Test
public void testIsLocked_whenNotLocked() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "KeyNotLocked";
final boolean result = mm.isLocked(key);
assertFalse(result);
}
@Test
public void testLock() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "Key";
mm.lock(key);
assertTrue(mm.isLocked(key));
}
@Test(expected = NullPointerException.class)
public void testLock_whenKeyNull() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
mm.lock(null);
}
@Test(expected = NullPointerException.class)
public void testUnLock_whenNullKey() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
mm.unlock(null);
}
@Test(expected = IllegalMonitorStateException.class)
public void testUnlock_whenNotLocked() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
mm.unlock("NOT_LOCKED");
}
@Test
public void testUnLock() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "key";
mm.lock(key);
mm.unlock(key);
assertFalse(mm.isLocked(key));
}
@Test
public void testUnlock_whenRentrantlyLockedBySelf() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "key";
mm.lock(key);
mm.lock(key);
mm.unlock(key);
assertTrue(mm.isLocked(key));
}
@Test(expected = IllegalMonitorStateException.class)
public void testUnlock_whenLockedByOther() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "key";
mm.lock(key);
UnLockThread t = new UnLockThread(mm, key);
t.start();
assertJoinable(t);
throw t.exception;
}
static class UnLockThread extends Thread{
public Exception exception=null;
public MultiMap mm=null;
public Object key=null;
public UnLockThread(MultiMap mm, Object key){
this.mm = mm;
this.key = key;
}
public void run() {
try{
mm.unlock(key);
}catch (Exception e){
exception = e;
}
}
};
@Test
public void testLock_whenAlreadyLockedBySelf() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "Key";
mm.lock(key);
mm.lock(key);
assertTrue(mm.isLocked(key));
}
@Test
public void testTryLock() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
Object key = "key";
assertTrue(mm.tryLock(key));
}
@Test(expected = NullPointerException.class)
public void testTryLock_whenNullKey() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
mm.tryLock(null);
}
@Test
public void testTryLock_whenLockedBySelf() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "Key";
mm.lock(key);
assertTrue(mm.tryLock(key));
}
@Test
public void testTryLock_whenLockedByOther() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "Key1";
mm.lock(key);
final CountDownLatch tryLockFailed = new CountDownLatch(1);
new Thread() {
public void run() {
if (mm.tryLock(key) == false) {
tryLockFailed.countDown();
}
}
}.start();
assertOpenEventually(tryLockFailed);
}
@Test
public void testTryLockWaitingOnLockedKey_thenKeyUnlockedByOtherThread() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "keyZ";
mm.lock(key);
final CountDownLatch tryLockReturnsTrue = new CountDownLatch(1);
new Thread(){
public void run() {
try {
if(mm.tryLock(key, 10, TimeUnit.SECONDS)){
tryLockReturnsTrue.countDown();
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}.start();
mm.unlock(key);
assertOpenEventually(tryLockReturnsTrue);
assertTrue(mm.isLocked(key));
}
@Test(expected = NullPointerException.class)
public void testForceUnlock_whenKeyNull() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
mm.forceUnlock(null);
}
@Test
public void testForceUnlock_whenKeyLocked() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "Key";
mm.lock(key);
mm.forceUnlock(key);
assertFalse(mm.isLocked(key));
}
@Test
public void testForceUnlock_whenKeyLockedTwice() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "Key";
mm.lock(key);
mm.lock(key);
mm.forceUnlock(key);
assertFalse(mm.isLocked(key));
}
@Test
public void testForceUnlock_whenKeyLockedByOther() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "key";
mm.lock(key);
final CountDownLatch forceUnlock = new CountDownLatch(1);
new Thread(){
public void run() {
mm.forceUnlock(key);
forceUnlock.countDown();
}
}.start();
assertOpenEventually(forceUnlock);
assertFalse(mm.isLocked(key));
}
@Test
public void testForceUnlock_whenKeyLockedTwiceByOther() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "key";
mm.lock(key);
mm.lock(key);
final CountDownLatch forceUnlock = new CountDownLatch(1);
new Thread(){
public void run() {
mm.forceUnlock(key);
forceUnlock.countDown();
}
}.start();
assertOpenEventually(forceUnlock);
assertFalse(mm.isLocked(key));
}
@Test
public void testLockTTL() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "Key";
mm.lock(key, 30, TimeUnit.SECONDS);
assertTrue(mm.isLocked(key));
}
@Test(expected = IllegalArgumentException.class)
public void testLockTTL_whenZeroTimeout() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "Key";
mm.lock(key, 0, TimeUnit.SECONDS);
}
@Test(expected = IllegalArgumentException.class)
public void testLockTTL_whenNegativeTimeout() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "Key";
mm.lock(key, -1, TimeUnit.MILLISECONDS);
}
@Test
public void testLockTTL_whenLockedBySelf() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "Key";
mm.lock(key);
mm.lock(key, 30, TimeUnit.SECONDS);
assertTrue(mm.isLocked(key));
}
@Test
public void testLockTTLExpired() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "Key";
mm.lock(key, 1, TimeUnit.SECONDS);
sleepSeconds(2);
assertFalse(mm.isLocked(key));
}
@Test
public void testLockTTLExpired_whenLockedBySelf() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "Key";
mm.lock(key);
mm.lock(key, 1, TimeUnit.SECONDS);
sleepSeconds(2);
assertFalse(mm.isLocked(key));
}
@Test
public void testLockTTLExpires_thenOtherThreadCanObtain() throws Exception {
final MultiMap mm = client.getMultiMap(randomString());
final Object key = "Key";
mm.lock(key, 2, TimeUnit.SECONDS);
final CountDownLatch tryLockSuccess = new CountDownLatch(1);
new Thread() {
public void run() {
try {
if (mm.tryLock(key, 4, TimeUnit.SECONDS)) {
tryLockSuccess.countDown();
}
} catch (InterruptedException e) {
fail(e.getMessage());
}
}
}.start();
assertOpenEventually(tryLockSuccess);
}
}