mirror of
https://github.com/Alfresco/alfresco-community-repo.git
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cefda8c965
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@18931 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
434 lines
15 KiB
Java
434 lines
15 KiB
Java
/*
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* Copyright (C) 2005-2010 Alfresco Software Limited.
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*
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* This file is part of Alfresco
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*
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* Alfresco is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Alfresco is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.alfresco.repo.domain.locks;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.locks.ReentrantLock;
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import junit.framework.TestCase;
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import org.alfresco.repo.lock.LockAcquisitionException;
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import org.alfresco.repo.transaction.AlfrescoTransactionSupport;
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import org.alfresco.repo.transaction.RetryingTransactionHelper;
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import org.alfresco.repo.transaction.RetryingTransactionHelper.RetryingTransactionCallback;
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import org.alfresco.service.ServiceRegistry;
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import org.alfresco.service.namespace.QName;
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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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/**
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* @see LockDAO
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*
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* @author Derek Hulley
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* @since 3.2
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*/
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public class LockDAOTest extends TestCase
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{
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public static final String NAMESPACE = "http://www.alfresco.org/test/LockDAOTest";
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private ApplicationContext ctx = ApplicationContextHelper.getApplicationContext();
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private TransactionService transactionService;
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private RetryingTransactionHelper txnHelper;
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private LockDAO lockDAO;
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// Lock names for the tests
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private QName lockA;
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private QName lockAA;
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private QName lockAAA;
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private QName lockAAB;
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private QName lockAAC;
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private QName lockAB;
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private QName lockABA;
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private QName lockABB;
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private QName lockABC;
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@Override
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public void setUp() throws Exception
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{
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ServiceRegistry serviceRegistry = (ServiceRegistry) ctx.getBean(ServiceRegistry.SERVICE_REGISTRY);
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transactionService = serviceRegistry.getTransactionService();
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txnHelper = transactionService.getRetryingTransactionHelper();
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txnHelper.setMinRetryWaitMs(10);
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txnHelper.setRetryWaitIncrementMs(10);
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txnHelper.setMaxRetryWaitMs(50);
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lockDAO = (LockDAO) ctx.getBean("lockDAO");
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// Get the test name
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String testName = getName();
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// Build lock names for the test
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lockA = QName.createQName(NAMESPACE, "a-" + testName);
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lockAA = QName.createQName(NAMESPACE, "a-" + testName + ".a-" + testName);
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lockAAA = QName.createQName(NAMESPACE, "a-" + testName + ".a-" + testName + ".a-" + testName);
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lockAAB = QName.createQName(NAMESPACE, "a-" + testName + ".a-" + testName + ".b-" + testName);
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lockAAC = QName.createQName(NAMESPACE, "a-" + testName + ".a-" + testName + ".c-" + testName);
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lockAB = QName.createQName(NAMESPACE, "a-" + testName + ".b-" + testName);
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lockABA = QName.createQName(NAMESPACE, "a-" + testName + ".b-" + testName + ".a-" + testName);
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lockABB = QName.createQName(NAMESPACE, "a-" + testName + ".b-" + testName + ".b-" + testName);
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lockABC = QName.createQName(NAMESPACE, "a-" + testName + ".b-" + testName + ".c-" + testName);
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}
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private String lock(final QName lockName, final long timeToLive, boolean expectSuccess)
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{
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try
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{
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String token = lock(lockName, timeToLive);
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if (!expectSuccess)
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{
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fail("Expected lock " + lockName + " to have been denied");
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}
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return token;
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}
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catch (LockAcquisitionException e)
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{
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if (expectSuccess)
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{
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// oops
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throw new RuntimeException("Expected to get lock " + lockName + " with TTL of " + timeToLive, e);
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}
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else
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{
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return null;
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}
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}
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}
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/**
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* Do the lock in a new transaction
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* @return Returns the lock token or <tt>null</tt> if it didn't work
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* @throws LockAcquisitionException on failure
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*/
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private String lock(final QName lockName, final long timeToLive)
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{
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RetryingTransactionCallback<String> callback = new RetryingTransactionCallback<String>()
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{
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public String execute() throws Throwable
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{
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String txnId = AlfrescoTransactionSupport.getTransactionId();
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lockDAO.getLock(lockName, txnId, timeToLive);
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return txnId;
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}
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};
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return txnHelper.doInTransaction(callback);
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}
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private void refresh(final QName lockName, final String lockToken, final long timeToLive, boolean expectSuccess)
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{
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RetryingTransactionCallback<Boolean> callback = new RetryingTransactionCallback<Boolean>()
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{
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public Boolean execute() throws Throwable
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{
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lockDAO.refreshLock(lockName, lockToken, timeToLive);
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return Boolean.TRUE;
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}
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};
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try
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{
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txnHelper.doInTransaction(callback);
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if (!expectSuccess)
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{
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fail("Expected to have failed to refresh lock " + lockName);
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}
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}
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catch (LockAcquisitionException e)
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{
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if (expectSuccess)
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{
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throw new RuntimeException("Expected to have refreshed lock " + lockName, e);
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}
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}
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}
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private void release(final QName lockName, final String lockToken, boolean expectSuccess)
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{
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RetryingTransactionCallback<Boolean> callback = new RetryingTransactionCallback<Boolean>()
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{
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public Boolean execute() throws Throwable
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{
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lockDAO.releaseLock(lockName, lockToken);
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return Boolean.TRUE;
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}
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};
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try
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{
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txnHelper.doInTransaction(callback);
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if (!expectSuccess)
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{
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fail("Expected to have failed to release lock " + lockName);
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}
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}
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catch (LockAcquisitionException e)
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{
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if (expectSuccess)
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{
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throw new RuntimeException("Expected to have released lock " + lockName, e);
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}
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}
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}
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public void testGetLockBasic() throws Exception
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{
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lock(lockAAA, 500L, true);
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}
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/**
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* Ensure that the lock tables and queries scale
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*/
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public void testLockTableScaling() throws Exception
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{
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int count = 500;
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long before = System.currentTimeMillis();
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for (int i = 1; i <= count; i++)
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{
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QName lockName = QName.createQName(lockAAA.getNamespaceURI(), lockAAA.getLocalName() + "-" + i);
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lock(lockName, 500L, true);
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if (i % 100 == 0)
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{
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long after = System.currentTimeMillis();
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System.out.println("Creation of " + i + " locks took " + (after-before)/1000 + "s");
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}
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}
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}
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public void testGetLockFailureBasic() throws Exception
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{
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lock(lockAAA, 500L, true);
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lock(lockAAA, 0L, false);
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}
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public void testSharedLocks() throws Exception
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{
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lock(lockAAA, 500L, true);
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lock(lockAAB, 500L, true);
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lock(lockAAC, 500L, true);
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lock(lockABA, 500L, true);
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lock(lockABB, 500L, true);
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lock(lockABC, 500L, true);
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}
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public void testExclusiveLockBlockedByShared() throws Exception
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{
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lock(lockAAA, 100L, true);
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lock(lockAA, 100L, false);
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lock(lockAB, 100L, true);
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lock(lockA, 100L, false);
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lock(lockABA, 100L, false);
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}
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public void testReleaseLockBasic() throws Exception
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{
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String token = lock(lockAAA, 500000L, true);
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release(lockAAA, token, true);
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token = lock(lockAAA, 0L, true);
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}
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public void testSharedLockAndRelease() throws Exception
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{
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String tokenAAA = lock(lockAAA, 5000L, true);
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String tokenAAB = lock(lockAAB, 5000L, true);
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String tokenAAC = lock(lockAAC, 5000L, true);
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String tokenABA = lock(lockABA, 5000L, true);
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String tokenABB = lock(lockABB, 5000L, true);
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String tokenABC = lock(lockABC, 5000L, true);
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// Can't lock shared resources
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lock(lockAA, 0L, false);
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lock(lockAB, 0L, false);
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lock(lockA, 0L, false);
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// Release a lock and check again
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release(lockAAA, tokenAAA, true);
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lock(lockAA, 0L, false);
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lock(lockAB, 0L, false);
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lock(lockA, 0L, false);
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// Release a lock and check again
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release(lockAAB, tokenAAB, true);
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lock(lockAA, 0L, false);
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lock(lockAB, 0L, false);
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lock(lockA, 0L, false);
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// Release a lock and check again
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release(lockAAC, tokenAAC, true);
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String tokenAA = lock(lockAA, 5000L, true); // This should be open now
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lock(lockAB, 0L, false);
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lock(lockA, 0L, false);
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// Release a lock and check again
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release(lockABA, tokenABA, true);
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lock(lockAB, 0L, false);
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lock(lockA, 0L, false);
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// Release a lock and check again
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release(lockABB, tokenABB, true);
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lock(lockAB, 0L, false);
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lock(lockA, 0L, false);
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// Release a lock and check again
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release(lockABC, tokenABC, true);
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String tokenAB = lock(lockAB, 5000L, true);
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lock(lockA, 0L, false);
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// Release AA and AB
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release(lockAA, tokenAA, true);
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release(lockAB, tokenAB, true);
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String tokenA = lock(lockA, 5000L, true);
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// ... and release
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release(lockA, tokenA, true);
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}
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public synchronized void testLockExpiry() throws Exception
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{
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lock(lockAAA, 50L, true);
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this.wait(100L);
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lock(lockAA, 50L, true);
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this.wait(100L);
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lock(lockA, 100L, true);
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}
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/**
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* Check that locks grabbed away due to expiry cannot be released
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* @throws Exception
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*/
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public synchronized void testLockExpiryAndRelease() throws Exception
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{
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String tokenAAA = lock(lockAAA, 500L, true);
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release(lockAAA, tokenAAA, true);
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tokenAAA = lock(lockAAA, 50L, true); // Make sure we can re-acquire the lock
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this.wait(100L); // Wait for expiry
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String grabbedTokenAAAA = lock(lockAAA, 50L, true); // Grabbed lock over the expiry
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release(lockAAA, tokenAAA, false); // Can't release any more
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this.wait(100L); // Wait for expiry
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release(lockAAA, grabbedTokenAAAA, true); // Proof that expiry, on it's own, doesn't prevent release
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}
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public synchronized void testLockRefresh() throws Exception
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{
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String tokenAAA = lock(lockAAA, 1000L, true);
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// Loop, refreshing and testing
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for (int i = 0; i < 40; i++)
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{
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wait(50L);
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// It will have expired, but refresh it anyway
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refresh(lockAAA, tokenAAA, 1000L, true);
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// Check that it is still holding
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lock(lockAAA, 0L, false);
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}
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}
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/**
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* Uses a thread lock to ensure that the lock DAO only allows locks through one at a time.
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*/
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public synchronized void testConcurrentLockAquisition() throws Exception
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{
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ReentrantLock threadLock = new ReentrantLock();
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GetLockThread[] threads = new GetLockThread[5];
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for (int i = 0; i < threads.length; i++)
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{
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threads[i] = new GetLockThread(threadLock);
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threads[i].start();
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}
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// Wait a bit and see if any encountered errors
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boolean allDone = false;
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waitLoop:
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for (int waitLoop = 0; waitLoop < 50; waitLoop++)
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{
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wait(1000L);
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for (int i = 0; i < threads.length; i++)
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{
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if (!threads[i].done)
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{
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continue waitLoop;
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}
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}
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// All the threads are done
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allDone = true;
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break;
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}
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// Check that all the threads got a turn
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if (!allDone)
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{
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fail("Not all threads managed to acquire the lock");
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}
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// Get errors
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StringBuilder errors = new StringBuilder(512);
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for (int i = 0; i < threads.length; i++)
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{
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if (threads[i].error != null)
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{
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errors.append("\nThread ").append(i).append(" error: ").append(threads[i].error);
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}
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}
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if (errors.toString().length() > 0)
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{
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fail(errors.toString());
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}
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}
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/**
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* Checks that the lock via the DAO forces a serialization
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*/
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private class GetLockThread extends Thread
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{
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private final ReentrantLock threadLock;
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private boolean done;
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private String error;
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private GetLockThread(ReentrantLock threadLock)
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{
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this.threadLock = threadLock;
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this.done = false;
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this.error = null;
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setDaemon(true);
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}
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@Override
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public synchronized void run()
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{
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boolean gotLock = false;
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try
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{
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String tokenAAA = null;
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while (true)
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{
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try
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{
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tokenAAA = lock(lockAAA, 100000L); // Lock for a long time
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// Success
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break;
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}
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catch (LockAcquisitionException e)
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{
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// OK. Keep trying.
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}
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try { wait(20L); } catch (InterruptedException e) {}
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}
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gotLock = threadLock.tryLock(0, TimeUnit.MILLISECONDS);
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if (!gotLock)
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{
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error = "Got lock via DAO but not via thread lock";
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return;
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}
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release(lockAAA, tokenAAA, true);
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}
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catch (Throwable e)
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{
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error = e.getMessage();
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}
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finally
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{
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done = true;
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if (gotLock)
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{
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threadLock.unlock();
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}
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}
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}
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}
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}
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