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git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2005 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Derek Hulley
220
source/java/org/alfresco/repo/cache/CacheTest.java
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source/java/org/alfresco/repo/cache/CacheTest.java
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/*
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* Copyright (C) 2005 Alfresco, Inc.
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*
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* Licensed under the Mozilla Public License version 1.1
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* with a permitted attribution clause. You may obtain a
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* copy of the License at
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*
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* http://www.alfresco.org/legal/license.txt
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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* either express or implied. See the License for the specific
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* language governing permissions and limitations under the
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* License.
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*/
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package org.alfresco.repo.cache;
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import java.io.Serializable;
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import javax.transaction.Status;
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import javax.transaction.UserTransaction;
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import net.sf.ehcache.CacheManager;
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import org.alfresco.service.ServiceRegistry;
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import org.alfresco.service.transaction.TransactionService;
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import org.alfresco.util.ApplicationContextHelper;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.support.ClassPathXmlApplicationContext;
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import junit.framework.TestCase;
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/**
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* @see org.alfresco.repo.cache.EhCacheAdapter
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*
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* @author Derek Hulley
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*/
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public class CacheTest extends TestCase
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{
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private static ApplicationContext ctx =new ClassPathXmlApplicationContext(
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new String[] {"classpath:cache-test-context.xml", ApplicationContextHelper.CONFIG_LOCATIONS[0]}
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);
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private ServiceRegistry serviceRegistry;
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private SimpleCache<String, Serializable> standaloneCache;
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private SimpleCache<String, Serializable> backingCache;
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private SimpleCache<String, Serializable> transactionalCache;
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@SuppressWarnings("unchecked")
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@Override
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public void setUp() throws Exception
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{
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serviceRegistry = (ServiceRegistry) ctx.getBean(ServiceRegistry.SERVICE_REGISTRY);
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standaloneCache = (SimpleCache<String, Serializable>) ctx.getBean("ehCache1");
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backingCache = (SimpleCache<String, Serializable>) ctx.getBean("backingCache");
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transactionalCache = (SimpleCache<String, Serializable>) ctx.getBean("transactionalCache");
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}
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public void testSetUp() throws Exception
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{
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CacheManager cacheManager = (CacheManager) ctx.getBean("ehCacheManager");
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assertNotNull(cacheManager);
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CacheManager cacheManagerCheck = (CacheManager) ctx.getBean("ehCacheManager");
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assertTrue(cacheManager == cacheManagerCheck);
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assertNotNull(serviceRegistry);
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assertNotNull(backingCache);
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assertNotNull(standaloneCache);
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assertNotNull(transactionalCache);
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}
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public void testEhcacheAdaptors() throws Exception
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{
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backingCache.put("A", "AAA");
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assertNull("Second cache should not have first's present", standaloneCache.get("A"));
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assertEquals("AAA", backingCache.get("A"));
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backingCache.remove("A");
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assertNull(backingCache.get("A"));
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}
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public void testTransactionalCacheNoTxn() throws Exception
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{
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String key = "B";
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String value = "BBB";
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// no transaction - do a put
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transactionalCache.put(key, value);
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// check that the value appears in the backing cache, backingCache
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assertEquals("Backing cache not used for put when no transaction present", value, backingCache.get(key));
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// remove the value from the backing cache and check that it is removed from the transaction cache
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backingCache.remove(key);
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assertNull("Backing cache not used for removed when no transaction present", transactionalCache.get(key));
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// add value into backing cache
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backingCache.put(key, value);
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// remove it from the transactional cache
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transactionalCache.remove(key);
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// check that it is gone from the backing cache
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assertNull("Non-transactional remove didn't go to backing cache", backingCache.get(key));
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}
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public void testTransactionalCacheWithTxn() throws Throwable
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{
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String newGlobalOne = "new_global_one";
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String newGlobalTwo = "new_global_two";
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String newGlobalThree = "new_global_three";
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String updatedTxnThree = "updated_txn_three";
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// add item to global cache
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backingCache.put(newGlobalOne, newGlobalOne);
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backingCache.put(newGlobalTwo, newGlobalTwo);
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backingCache.put(newGlobalThree, newGlobalThree);
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TransactionService transactionService = serviceRegistry.getTransactionService();
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UserTransaction txn = transactionService.getUserTransaction();
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// begin a transaction
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txn.begin();
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try
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{
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// remove 1 from the cache
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transactionalCache.remove(newGlobalOne);
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assertFalse("Item was not removed from txn cache", transactionalCache.contains(newGlobalOne));
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assertNull("Get didn't return null", transactionalCache.get(newGlobalOne));
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assertTrue("Item was removed from backing cache", backingCache.contains(newGlobalOne));
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// update 3 in the cache
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transactionalCache.put(updatedTxnThree, "XXX");
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assertEquals("Item not updated in txn cache", "XXX", transactionalCache.get(updatedTxnThree));
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assertFalse("Item was put into backing cache", backingCache.contains(updatedTxnThree));
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// commit the transaction
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txn.commit();
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// check that backing cache was updated with the in-transaction changes
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assertFalse("Item was not removed from backing cache", backingCache.contains(newGlobalOne));
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assertNull("Item could still be fetched from backing cache", backingCache.get(newGlobalOne));
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assertEquals("Item not updated in backing cache", "XXX", backingCache.get(updatedTxnThree));
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}
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catch (Throwable e)
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{
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if (txn.getStatus() == Status.STATUS_ACTIVE)
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{
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txn.rollback();
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}
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throw e;
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}
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}
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/**
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* Preloads the cache, then performs a simultaneous addition of N new values and
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* removal of the N preloaded values.
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*
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* @param cache
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* @param objectCount
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* @return Returns the time it took in <b>nanoseconds</b>.
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*/
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public long runPerformanceTestOnCache(SimpleCache<String, Serializable> cache, int objectCount)
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{
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// preload
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for (int i = 0; i < objectCount; i++)
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{
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String key = Integer.toString(i);
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Integer value = new Integer(i);
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cache.put(key, value);
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}
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// start timer
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long start = System.nanoTime();
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for (int i = 0; i < objectCount; i++)
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{
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String key = Integer.toString(i);
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cache.remove(key);
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// add a new value
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key = Integer.toString(i + objectCount);
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Integer value = new Integer(i + objectCount);
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cache.put(key, value);
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}
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// stop
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long stop = System.nanoTime();
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return (stop - start);
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}
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/**
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* Tests a straight Ehcache adapter against a transactional cache both in and out
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* of a transaction. This is done repeatedly, pushing the count up.
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*/
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public void testPerformance() throws Exception
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{
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for (int i = 0; i < 5; i++)
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{
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int count = (int) Math.pow(10D, (double)i);
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// test standalone
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long timePlain = runPerformanceTestOnCache(standaloneCache, count);
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// do transactional cache in a transaction
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TransactionService transactionService = serviceRegistry.getTransactionService();
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UserTransaction txn = transactionService.getUserTransaction();
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txn.begin();
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long timeTxn = runPerformanceTestOnCache(transactionalCache, count);
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long commitStart = System.nanoTime();
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txn.commit();
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long commitEnd = System.nanoTime();
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long commitTime = (commitEnd - commitStart);
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// add this to the cache's performance overhead
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timeTxn += commitTime;
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// report
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System.out.println("Cache performance test: \n" +
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" count: " + count + "\n" +
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" direct: " + timePlain/((long)count) + " ns\\count \n" +
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" transaction: " + timeTxn/((long)count) + " ns\\count");
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}
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}
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}
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