/*
* 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.transaction.impl;
import com.hazelcast.config.Config;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.instance.MemberImpl;
import com.hazelcast.internal.util.counters.MwCounter;
import com.hazelcast.logging.ILogger;
import com.hazelcast.spi.NodeEngine;
import com.hazelcast.spi.impl.operationservice.InternalOperationService;
import com.hazelcast.test.HazelcastSerialClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
import com.hazelcast.test.annotation.QuickTest;
import com.hazelcast.transaction.TransactionException;
import com.hazelcast.transaction.TransactionOptions;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import static com.hazelcast.transaction.TransactionOptions.TransactionType.TWO_PHASE;
import static com.hazelcast.transaction.impl.Transaction.State.COMMITTED;
import static com.hazelcast.transaction.impl.Transaction.State.COMMIT_FAILED;
import static com.hazelcast.transaction.impl.Transaction.State.ROLLED_BACK;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import static org.mockito.Matchers.anyInt;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
@RunWith(HazelcastSerialClassRunner.class)
@Category(QuickTest.class)
public class TransactionImpl_TwoPhaseTest extends HazelcastTestSupport {
private InternalOperationService operationService;
private ILogger logger;
private TransactionManagerServiceImpl txManagerService;
private NodeEngine nodeEngine;
@Before
public void setup() {
HazelcastInstance hz = createHazelcastInstance();
operationService = getOperationService(hz);
logger = mock(ILogger.class);
txManagerService = mock(TransactionManagerServiceImpl.class);
txManagerService.commitCount = MwCounter.newMwCounter();
txManagerService.startCount = MwCounter.newMwCounter();
txManagerService.rollbackCount = MwCounter.newMwCounter();
nodeEngine = mock(NodeEngine.class);
when(nodeEngine.getOperationService()).thenReturn(operationService);
when(nodeEngine.getLogger(TransactionImpl.class)).thenReturn(logger);
when(nodeEngine.getLocalMember()).thenReturn(new MemberImpl());
}
// =================== begin ==================================================
@Test
public void begin_whenBeginThrowsException() throws Exception {
RuntimeException expectedException = new RuntimeException("example exception");
when(txManagerService.pickBackupLogAddresses(anyInt())).thenThrow(expectedException);
TransactionOptions options = new TransactionOptions().setTransactionType(TWO_PHASE).setDurability(0);
TransactionImpl tx = new TransactionImpl(txManagerService, nodeEngine, options, null);
try {
tx.begin();
fail("Transaction expected to fail");
} catch (Exception e) {
assertEquals(expectedException, e);
}
// other independent transaction in same thread
// should behave identically
tx = new TransactionImpl(txManagerService, nodeEngine, options, "123");
try {
tx.begin();
fail("Transaction expected to fail");
} catch (Exception e) {
assertEquals(expectedException, e);
}
}
// =================== requiresPrepare =======================================
@Test
public void requiresPrepare_whenEmpty() throws Exception {
assertRequiresPrepare(0, false);
}
@Test
public void requiresPrepare_whenLogRecord() throws Exception {
assertRequiresPrepare(1, false);
}
@Test
public void requiresPrepare_whenMultipleLogRecords() throws Exception {
assertRequiresPrepare(2, true);
}
public void assertRequiresPrepare(int recordCount, boolean expected) throws Exception {
TransactionOptions options = new TransactionOptions().setTransactionType(TWO_PHASE).setDurability(0);
TransactionImpl tx = new TransactionImpl(txManagerService, nodeEngine, options, "dummy-uuid");
tx.begin();
for (int k = 0; k < recordCount; k++) {
tx.add(new MockTransactionLogRecord());
}
boolean result = tx.requiresPrepare();
assertEquals(expected, result);
}
// =================== prepare ==================================================
@Test(expected = TransactionException.class)
public void prepare_whenThrowsExceptionDuringPrepare() throws Exception {
TransactionOptions options = new TransactionOptions().setTransactionType(TWO_PHASE).setDurability(0);
TransactionImpl tx = new TransactionImpl(txManagerService, nodeEngine, options, "dummy-uuid");
tx.begin();
tx.add(new MockTransactionLogRecord().failPrepare());
tx.prepare();
}
// =================== commit ==================================================
@Test(expected = IllegalStateException.class)
public void commit_whenNotActive() {
TransactionOptions options = new TransactionOptions().setTransactionType(TWO_PHASE).setDurability(0);
TransactionImpl tx = new TransactionImpl(txManagerService, nodeEngine, options, "dummy-uuid");
tx.begin();
tx.rollback();
tx.commit();
}
@Test(expected = IllegalStateException.class)
public void commit_whenNotPreparedAndMoreThanOneTransactionLogRecord() {
TransactionOptions options = new TransactionOptions().setTransactionType(TWO_PHASE).setDurability(0);
TransactionImpl tx = new TransactionImpl(txManagerService, nodeEngine, options, "dummy-uuid");
tx.begin();
tx.add(new MockTransactionLogRecord());
tx.add(new MockTransactionLogRecord());
tx.commit();
}
// there is an optimization for single item transactions so they can commit without preparing
@Test
public void commit_whenOneTransactionLogRecord_thenCommit() {
TransactionOptions options = new TransactionOptions().setTransactionType(TWO_PHASE).setDurability(0);
TransactionImpl tx = new TransactionImpl(txManagerService, nodeEngine, options, "dummy-uuid");
tx.begin();
tx.add(new MockTransactionLogRecord());
tx.commit();
assertEquals(COMMITTED, tx.getState());
}
@Test
public void commit_whenThrowsExceptionDuringCommit() throws Exception {
TransactionOptions options = new TransactionOptions().setTransactionType(TWO_PHASE).setDurability(0);
TransactionImpl tx = new TransactionImpl(txManagerService, nodeEngine, options, "dummy-uuid");
tx.begin();
tx.add(new MockTransactionLogRecord().failCommit());
tx.prepare();
try {
tx.commit();
fail();
} catch (TransactionException expected) {
}
assertEquals(COMMIT_FAILED, tx.getState());
}
// =================== commit ==================================================
@Test
public void rollback() {
TransactionOptions options = new TransactionOptions().setTransactionType(TWO_PHASE).setDurability(0);
TransactionImpl tx = new TransactionImpl(txManagerService, nodeEngine, options, "dummy-uuid");
tx.begin();
tx.rollback();
assertEquals(ROLLED_BACK, tx.getState());
}
@Test(expected = IllegalStateException.class)
public void rollback_whenAlreadyRolledBack() {
TransactionOptions options = new TransactionOptions().setTransactionType(TWO_PHASE).setDurability(0);
TransactionImpl tx = new TransactionImpl(txManagerService, nodeEngine, options, "dummy-uuid");
tx.begin();
tx.rollback();
tx.rollback();
}
@Test
public void rollback_whenFailureDuringRollback() {
TransactionOptions options = new TransactionOptions().setTransactionType(TWO_PHASE).setDurability(0);
TransactionImpl tx = new TransactionImpl(txManagerService, nodeEngine, options, "dummy-uuid");
tx.begin();
tx.add(new MockTransactionLogRecord().failRollback());
tx.rollback();
}
@Test
public void rollback_whenRollingBackCommitFailedTransaction() {
TransactionOptions options = new TransactionOptions().setTransactionType(TWO_PHASE).setDurability(0);
TransactionImpl tx = new TransactionImpl(txManagerService, nodeEngine, options, "dummy-uuid");
tx.begin();
tx.add(new MockTransactionLogRecord().failCommit());
try {
tx.commit();
fail();
} catch (TransactionException expected) {
}
tx.rollback();
assertEquals(ROLLED_BACK, tx.getState());
}
@Override
protected Config getConfig() {
Config config = new Config();
config.getSerializationConfig().addDataSerializableFactory(
MockTransactionLogRecord.MockTransactionLogRecordSerializerHook.F_ID,
new MockTransactionLogRecord.MockTransactionLogRecordSerializerHook().createFactory());
return config;
}
}