| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You 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 org.apache.geode.internal.cache; |
| |
| import static org.apache.geode.distributed.ConfigurationProperties.LOCATORS; |
| import static org.apache.geode.distributed.ConfigurationProperties.MCAST_PORT; |
| import static org.assertj.core.api.Assertions.assertThat; |
| import static org.assertj.core.api.Assertions.assertThatThrownBy; |
| import static org.junit.Assert.assertEquals; |
| |
| import java.util.Properties; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.contrib.java.lang.system.RestoreSystemProperties; |
| import org.junit.rules.TestName; |
| |
| import org.apache.geode.cache.Cache; |
| import org.apache.geode.cache.CacheFactory; |
| import org.apache.geode.cache.CommitConflictException; |
| import org.apache.geode.cache.Region; |
| import org.apache.geode.cache.RegionShortcut; |
| import org.apache.geode.distributed.internal.DistributionConfig; |
| import org.apache.geode.test.awaitility.GeodeAwaitility; |
| import org.apache.geode.test.junit.rules.ExecutorServiceRule; |
| |
| /** |
| * junit test for detecting read conflicts |
| */ |
| public class TXDetectReadConflictJUnitTest { |
| |
| @Rule |
| public RestoreSystemProperties restoreSystemProperties = new RestoreSystemProperties(); |
| |
| @Rule |
| public ExecutorServiceRule executorServiceRule = new ExecutorServiceRule(); |
| |
| @Rule |
| public TestName name = new TestName(); |
| |
| private Cache cache = null; |
| private Region region = null; |
| private Region regionPR = null; |
| private final CountDownLatch allowWriteTransactionToCommitLatch = new CountDownLatch(1); |
| private final CountDownLatch allowReadTransactionToProceedLatch = new CountDownLatch(1); |
| private static final String key = "key"; |
| private static final String key1 = "key1"; |
| private static final String value = "value"; |
| private static final String value1 = "value1"; |
| private static final String newValue = "newValue"; |
| private static final String newValue1 = "newValue1"; |
| |
| @Before |
| public void setUp() throws Exception { |
| System.setProperty(DistributionConfig.GEMFIRE_PREFIX + "detectReadConflicts", "true"); |
| createCache(); |
| } |
| |
| protected void createCache() { |
| Properties props = new Properties(); |
| props.setProperty(MCAST_PORT, "0"); |
| props.setProperty(LOCATORS, ""); |
| cache = new CacheFactory(props).create(); |
| region = cache.createRegionFactory(RegionShortcut.REPLICATE).create("testRegionRR"); |
| } |
| |
| protected void createCachePR() { |
| Properties props = new Properties(); |
| props.setProperty(MCAST_PORT, "0"); |
| props.setProperty(LOCATORS, ""); |
| cache = new CacheFactory(props).create(); |
| regionPR = cache.createRegionFactory(RegionShortcut.PARTITION).create("testRegionPR"); |
| } |
| |
| @After |
| public void tearDown() throws Exception { |
| cache.close(); |
| } |
| |
| @Test |
| public void testReadConflictsRR() { |
| cache.close(); |
| createCache(); |
| region.put(key, value); |
| region.put(key1, value1); |
| TXManagerImpl mgr = (TXManagerImpl) cache.getCacheTransactionManager(); |
| mgr.begin(); |
| assertEquals(value, region.get(key)); |
| assertEquals(value1, region.get(key1)); |
| mgr.commit(); |
| } |
| |
| @Test |
| public void testReadConflictsPR() { |
| cache.close(); |
| createCachePR(); |
| regionPR.put(key, value); |
| regionPR.put(key1, value1); |
| TXManagerImpl mgr = (TXManagerImpl) cache.getCacheTransactionManager(); |
| mgr.begin(); |
| assertEquals(value, regionPR.get(key)); |
| assertEquals(value1, regionPR.get(key1)); |
| mgr.commit(); |
| } |
| |
| |
| /** |
| * Test that two transactions with read and put operations produce CommitConflictException |
| */ |
| |
| @Test |
| public void readConflictsTransactionCanBlockWriteTransaction() { |
| cache.close(); |
| createCache(); |
| |
| region.put(key, value); |
| region.put(key1, value1); |
| TXManagerImpl txManager = (TXManagerImpl) cache.getCacheTransactionManager(); |
| txManager.begin(); |
| assertThat(region.get(key)).isSameAs(value); |
| region.put(key1, newValue1); |
| TXState txState = |
| (TXState) ((TXStateProxyImpl) TXManagerImpl.getCurrentTXState()).getRealDeal(null, null); |
| txState.setAfterReservation(() -> readTransactionAfterReservation()); |
| executorServiceRule.submit(() -> doPutOnReadKeyTransaction()); |
| txManager.commit(); |
| assertThat(region.get(key)).isSameAs(value); |
| assertThat(region.get(key1)).isSameAs(newValue1); |
| } |
| |
| private void readTransactionAfterReservation() { |
| allowWriteTransactionToCommitLatch.countDown(); |
| try { |
| allowReadTransactionToProceedLatch.await(GeodeAwaitility.getTimeout().getValueInMS(), |
| TimeUnit.MILLISECONDS); |
| } catch (InterruptedException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| private void doPutOnReadKeyTransaction() throws Exception { |
| TXManagerImpl txManager = (TXManagerImpl) cache.getCacheTransactionManager(); |
| txManager.begin(); |
| region.put(key, newValue); // expect commit conflict |
| allowWriteTransactionToCommitLatch.await(GeodeAwaitility.getTimeout().getValueInMS(), |
| TimeUnit.MILLISECONDS); |
| assertThatThrownBy(() -> txManager.commit()).isExactlyInstanceOf(CommitConflictException.class); |
| allowReadTransactionToProceedLatch.countDown(); |
| } |
| |
| @Test |
| public void readConflictsTransactionCanDetectStateChange() throws Exception { |
| cache.close(); |
| createCache(); |
| |
| region.put(key, value); |
| region.put(key1, value1); |
| TXManagerImpl txManager = (TXManagerImpl) cache.getCacheTransactionManager(); |
| txManager.begin(); |
| assertThat(region.get(key)).isSameAs(value); |
| region.put(key1, newValue1); |
| executorServiceRule.submit(() -> doPutTransaction()); |
| allowReadTransactionToProceedLatch.await(); |
| // expect commit conflict |
| assertThatThrownBy(() -> txManager.commit()).isExactlyInstanceOf(CommitConflictException.class); |
| assertThat(region.get(key)).isSameAs(newValue); |
| assertThat(region.get(key1)).isSameAs(value1); |
| } |
| |
| private void doPutTransaction() { |
| TXManagerImpl txManager = (TXManagerImpl) cache.getCacheTransactionManager(); |
| txManager.begin(); |
| region.put(key, newValue); |
| txManager.commit(); |
| allowReadTransactionToProceedLatch.countDown(); |
| } |
| |
| @Test |
| public void readConflictsTransactionCanBlockReadTransaction() { |
| cache.close(); |
| createCachePR(); |
| |
| regionPR.put(key, value); |
| regionPR.put(key1, value1); |
| TXManagerImpl txManager = (TXManagerImpl) cache.getCacheTransactionManager(); |
| txManager.begin(); |
| assertEquals(regionPR.get(key), value); |
| regionPR.put(key1, newValue1); |
| TXState txState = |
| (TXState) ((TXStateProxyImpl) TXManagerImpl.getCurrentTXState()).getRealDeal(null, null); |
| txState.setAfterReservation(() -> putTransactionAfterReservation()); |
| executorServiceRule.submit(() -> doReadonPutKeyTransaction()); |
| txManager.commit(); |
| assertEquals(regionPR.get(key), value); |
| assertEquals(regionPR.get(key1), newValue1); |
| } |
| |
| private void putTransactionAfterReservation() { |
| allowReadTransactionToProceedLatch.countDown(); |
| try { |
| allowWriteTransactionToCommitLatch.await(GeodeAwaitility.getTimeout().getValueInMS(), |
| TimeUnit.MILLISECONDS); |
| } catch (InterruptedException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| private void doReadonPutKeyTransaction() { |
| TXManagerImpl txManager = (TXManagerImpl) cache.getCacheTransactionManager(); |
| txManager.begin(); |
| assertEquals(regionPR.get(key1), value1); |
| try { |
| allowReadTransactionToProceedLatch.await(GeodeAwaitility.getTimeout().getValueInMS(), |
| TimeUnit.MILLISECONDS); |
| } catch (InterruptedException e) { |
| throw new RuntimeException(e); |
| } |
| assertThatThrownBy(() -> txManager.commit()).isExactlyInstanceOf(CommitConflictException.class); |
| allowWriteTransactionToCommitLatch.countDown(); |
| } |
| |
| /** |
| * Test that two transactions with only read operations don't produce CommitConflictException |
| */ |
| |
| @Test |
| public void readConflictsTransactionNoConflicts() throws Exception { |
| cache.close(); |
| createCachePR(); |
| |
| regionPR.put(key, value); |
| regionPR.put(key1, value1); |
| TXManagerImpl txManager = (TXManagerImpl) cache.getCacheTransactionManager(); |
| txManager.begin(); |
| assertEquals(regionPR.get(key), value); |
| assertEquals(regionPR.get(key1), value1); |
| executorServiceRule.submit(() -> doGetTransaction()); |
| allowReadTransactionToProceedLatch.await(); |
| txManager.commit(); |
| assertEquals(regionPR.get(key), value); |
| assertEquals(regionPR.get(key1), value1); |
| } |
| |
| private void doGetTransaction() { |
| TXManagerImpl txManager = (TXManagerImpl) cache.getCacheTransactionManager(); |
| txManager.begin(); |
| assertEquals(regionPR.get(key), value); |
| assertEquals(regionPR.get(key1), value1); |
| txManager.commit(); |
| allowReadTransactionToProceedLatch.countDown(); |
| } |
| |
| } |