/*
* 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.xa;
import com.atomikos.icatch.jta.UserTransactionManager;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.IMap;
import com.hazelcast.core.TransactionalMap;
import com.hazelcast.logging.ILogger;
import com.hazelcast.logging.Logger;
import com.hazelcast.test.HazelcastSerialClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
import com.hazelcast.test.TestHazelcastInstanceFactory;
import com.hazelcast.test.annotation.QuickTest;
import com.hazelcast.transaction.HazelcastXAResource;
import com.hazelcast.transaction.TransactionContext;
import com.hazelcast.transaction.impl.xa.SerializableXID;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import javax.transaction.SystemException;
import javax.transaction.Transaction;
import javax.transaction.xa.XAException;
import javax.transaction.xa.XAResource;
import javax.transaction.xa.Xid;
import java.io.File;
import java.io.FilenameFilter;
import java.util.Random;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
@RunWith(HazelcastSerialClassRunner.class)
@Category(QuickTest.class)
public class HazelcastXATest extends HazelcastTestSupport {
static final Random random = new Random(System.currentTimeMillis());
static final ILogger logger = Logger.getLogger(HazelcastXATest.class);
UserTransactionManager tm = null;
public void cleanAtomikosLogs() {
try {
File currentDir = new File(".");
final File[] tmLogs = currentDir.listFiles(new FilenameFilter() {
public boolean accept(File dir, String name) {
if (name.endsWith(".epoch") || name.startsWith("tmlog")) {
return true;
}
return false;
}
});
for (File tmLog : tmLogs) {
tmLog.delete();
}
} catch (Exception e) {
e.printStackTrace();
}
}
@Before
public void init() throws SystemException {
cleanAtomikosLogs();
tm = new UserTransactionManager();
tm.setTransactionTimeout(60);
}
@After
public void cleanup() {
tm.close();
cleanAtomikosLogs();
}
@Test
public void testRollback() throws Exception {
HazelcastInstance instance = createHazelcastInstance();
HazelcastXAResource xaResource = instance.getXAResource();
tm.begin();
Transaction transaction = tm.getTransaction();
transaction.enlistResource(xaResource);
TransactionContext context = xaResource.getTransactionContext();
boolean error = false;
try {
final TransactionalMap m = context.getMap("m");
m.put("key", "value");
throw new RuntimeException("Exception for rolling back");
} catch (Exception e) {
error = true;
} finally {
close(error, xaResource);
}
assertNull(instance.getMap("m").get("key"));
}
@Test
public void testRecovery() throws Exception {
TestHazelcastInstanceFactory factory = createHazelcastInstanceFactory(4);
HazelcastInstance instance1 = factory.newHazelcastInstance();
HazelcastInstance instance2 = factory.newHazelcastInstance();
HazelcastInstance instance3 = factory.newHazelcastInstance();
HazelcastXAResource xaResource = instance1.getXAResource();
Xid myXid = new SerializableXID(42, "globalTransactionId".getBytes(), "branchQualifier".getBytes());
xaResource.start(myXid, 0);
TransactionContext context1 = xaResource.getTransactionContext();
TransactionalMap<Object, Object> map = context1.getMap("map");
map.put("key", "value");
xaResource.prepare(myXid);
instance1.shutdown();
instance1 = factory.newHazelcastInstance();
xaResource = instance1.getXAResource();
Xid[] recovered = xaResource.recover(0);
for (Xid xid : recovered) {
xaResource.commit(xid, false);
}
assertEquals("value", instance2.getMap("map").get("key"));
}
/**
* Start two nodes.
* One node in a new thread prepares tx and shutdowns. Check if remaining node can recover tx or not.
* <p/>
*
* @throws XAException
*/
@Test
public void testRecovery_singleInstanceRemaining() throws XAException {
final CountDownLatch nodeShutdownLatch = new CountDownLatch(1);
TestHazelcastInstanceFactory factory = createHazelcastInstanceFactory(2);
HazelcastInstance instance1 = factory.newHazelcastInstance();
HazelcastInstance instance2 = factory.newHazelcastInstance();
// 1. Start TX from a new thread.
startTX(instance1, nodeShutdownLatch);
waitNodeToShutDown(nodeShutdownLatch);
// 2. Try to recover TX from other node.
recoverTX(instance2);
IMap<String, String> map = instance2.getMap("map");
String actualValue = map.get("key");
assertEquals("value", actualValue);
}
private void waitNodeToShutDown(CountDownLatch nodeShutdownLatch) {
assertOpenEventually(nodeShutdownLatch);
}
private void startTX(final HazelcastInstance instance, final CountDownLatch nodeShutdownLatch) {
new Thread(new Runnable() {
@Override
public void run() {
try {
HazelcastXAResource xaResource = instance.getXAResource();
Xid xid = new SerializableXID(42, "globalTransactionId".getBytes(), "branchQualifier".getBytes());
xaResource.start(xid, XAResource.TMNOFLAGS);
TransactionContext context = xaResource.getTransactionContext();
final TransactionalMap<Object, Object> map = context.getMap("map");
map.put("key", "value");
xaResource.prepare(xid);
instance.shutdown();
nodeShutdownLatch.countDown();
} catch (XAException e) {
e.printStackTrace();
}
}
}).start();
}
private void recoverTX(HazelcastInstance instance) throws XAException {
HazelcastXAResource xaResource = instance.getXAResource();
final Xid[] recovered = xaResource.recover(XAResource.TMNOFLAGS);
for (Xid xid : recovered) {
xaResource.commit(xid, false);
}
}
@Test
public void testIsSame() throws Exception {
TestHazelcastInstanceFactory factory = createHazelcastInstanceFactory(2);
HazelcastInstance instance1 = factory.newHazelcastInstance();
HazelcastInstance instance2 = factory.newHazelcastInstance();
HazelcastXAResource resource1 = instance1.getXAResource();
HazelcastXAResource resource2 = instance2.getXAResource();
assertTrue(resource1.isSameRM(resource2));
}
@Test
public void testParallel() throws Exception {
final HazelcastInstance instance = createHazelcastInstance();
// this is needed due to a racy bug in atomikos
txn(instance);
int size = 100;
ExecutorService executorService = Executors.newFixedThreadPool(5);
final CountDownLatch latch = new CountDownLatch(size);
for (int i = 0; i < size; i++) {
executorService.execute(new Runnable() {
public void run() {
try {
txn(instance);
} catch (Exception e) {
logger.severe("Exception during txn", e);
} finally {
latch.countDown();
}
}
});
}
assertOpenEventually(latch, 20);
final IMap m = instance.getMap("m");
for (int i = 0; i < 10; i++) {
assertFalse(m.isLocked(i));
}
}
@Test
public void testSequential() throws Exception {
HazelcastInstance instance = createHazelcastInstance();
int count = 100;
for (int i = 0; i < count; i++) {
txn(instance);
}
}
private void txn(HazelcastInstance instance) throws Exception {
HazelcastXAResource xaResource = instance.getXAResource();
tm.begin();
Transaction transaction = tm.getTransaction();
transaction.enlistResource(xaResource);
boolean error = false;
try {
TransactionContext context = xaResource.getTransactionContext();
TransactionalMap m = context.getMap("m");
m.put(random.nextInt(10), "value");
} catch (Exception e) {
logger.severe("Exception during transaction", e);
error = true;
} finally {
close(error, xaResource);
}
}
private void close(boolean error, XAResource... xaResource) throws Exception {
int flag = XAResource.TMSUCCESS;
// get the current tx
Transaction tx = tm.getTransaction();
// closeConnection
if (error) {
flag = XAResource.TMFAIL;
}
for (XAResource resource : xaResource) {
tx.delistResource(resource, flag);
}
if (error) {
tm.rollback();
} else {
tm.commit();
}
}
}