| /* |
| * Copyright (c) 1998, 2021 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // dminsky - initial API and implementation |
| package org.eclipse.persistence.testing.tests.simultaneous; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Random; |
| import java.util.UUID; |
| import java.util.Vector; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.eclipse.persistence.sessions.UnitOfWork; |
| import org.eclipse.persistence.expressions.ExpressionBuilder; |
| import org.eclipse.persistence.queries.QueryResultsCachePolicy; |
| import org.eclipse.persistence.queries.ReadObjectQuery; |
| |
| import org.eclipse.persistence.testing.models.employee.domain.Employee; |
| import org.eclipse.persistence.testing.framework.TestCase; |
| |
| /** |
| * Bug 304423 - CacheIdentityMap is incorrectly synchronized |
| * Test invoking many queries from multiple threads against a QueryCache |
| * Underlying issue was an infinite loop in CacheIdentityMap ensureFixedSize() |
| * @author dminsky |
| */ |
| public class ConcurrentQueryCacheQueryResultsTest extends TestCase { |
| |
| // constants |
| protected static final int CACHE_SIZE = 5; |
| protected static final int CONCURRENT_THREADS = 7; |
| protected static final int TESTDATA_INSTANCES = 100; |
| protected static final int NUMBER_OF_EXECUTIONS = 20000; |
| protected static final int TIMEOUT_IN_SECONDS = 60; |
| protected static final String QUERY_NAME = "findEmployeeByFirstName"; |
| |
| // shared results/testdata |
| protected List<Employee> testEmployees; |
| protected List<Boolean> testResults; |
| protected boolean terminatedNormally; |
| |
| public ConcurrentQueryCacheQueryResultsTest() { |
| super(); |
| setDescription("Test invoking many queries from multiple threads against a QueryCache"); |
| } |
| |
| @Override |
| public void setup() { |
| getSession().getIdentityMapAccessor().initializeIdentityMaps(); |
| |
| // create a simple named query on the session and configure it with a small query results cache size, |
| // set to CACHE_SIZE |
| ReadObjectQuery query = new ReadObjectQuery(Employee.class); |
| ExpressionBuilder builder = query.getExpressionBuilder(); |
| query.setSelectionCriteria(builder.get("firstName").equal(builder.getParameter("firstName"))); |
| query.addArgument("firstName"); |
| query.setQueryResultsCachePolicy(new QueryResultsCachePolicy(CACHE_SIZE)); |
| getSession().addQuery(QUERY_NAME, query); |
| |
| testEmployees = new ArrayList<Employee>(TESTDATA_INSTANCES); |
| |
| // set all test results to false |
| testResults = new ArrayList<Boolean>(NUMBER_OF_EXECUTIONS); |
| for (int i = 0; i < NUMBER_OF_EXECUTIONS; i++) { |
| testResults.add(i, Boolean.FALSE); |
| } |
| |
| // create our own test data |
| UnitOfWork uow = getSession().acquireUnitOfWork(); |
| for (int i = 0; i < TESTDATA_INSTANCES; i++) { |
| Employee emp = new Employee(); |
| emp.setFirstName(String.valueOf(UUID.randomUUID()).substring(0, 8)); |
| emp.setLastName(String.valueOf(UUID.randomUUID()).substring(0, 8)); |
| uow.registerObject(emp); |
| testEmployees.add(emp); |
| } |
| uow.commit(); |
| } |
| |
| @Override |
| public void test() throws Throwable { |
| // configure a thread pool and ExecutorService, add Runnable instances to execute |
| ExecutorService executor = Executors.newFixedThreadPool(CONCURRENT_THREADS); |
| for (int resultId = 0; resultId < NUMBER_OF_EXECUTIONS; resultId++) { |
| executor.execute(new QueryWorkerThread(resultId)); |
| } |
| executor.shutdown(); // no more tasks |
| |
| // configure a timeout and await termination |
| try { |
| terminatedNormally = executor.awaitTermination(TIMEOUT_IN_SECONDS, TimeUnit.SECONDS); |
| } catch (InterruptedException e) { |
| throw e; |
| } |
| } |
| |
| @Override |
| public void verify() { |
| // fail if timeout occurred, instead of 'normal' termination |
| if (!terminatedNormally) { |
| fail(getClass().getSimpleName() + " timed out whilst executing, after " + TIMEOUT_IN_SECONDS + " seconds"); |
| } |
| // fail if any test result was incorrect (false) |
| for (int resultId = 0; resultId < NUMBER_OF_EXECUTIONS; resultId++) { |
| if (this.testResults.get(resultId) == Boolean.FALSE) { |
| fail("Test result failed (false) for test result id: " + resultId); |
| } |
| } |
| } |
| |
| @Override |
| public void reset() { |
| getSession().removeQuery(QUERY_NAME); |
| UnitOfWork uow = getSession().acquireUnitOfWork(); |
| uow.deleteAllObjects(testEmployees); |
| uow.commit(); |
| getSession().getIdentityMapAccessor().initializeIdentityMaps(); |
| } |
| |
| protected class QueryWorkerThread implements Runnable { |
| |
| protected int resultId; |
| |
| public QueryWorkerThread(int resultId) { |
| super(); |
| this.resultId = resultId; |
| } |
| |
| @Override |
| public void run() { |
| int randomNumber = new Random().nextInt(TESTDATA_INSTANCES); |
| Employee randomEmployee = testEmployees.get(randomNumber); |
| |
| Vector<String> args = new Vector<String>(); |
| args.add(randomEmployee.getFirstName()); |
| Employee employeeFound = (Employee) getSession().executeQuery(QUERY_NAME, args); |
| |
| assertEquals(randomEmployee.getId(), employeeFound.getId()); |
| assertEquals(randomEmployee.getFirstName(), employeeFound.getFirstName()); |
| assertEquals(randomEmployee.getLastName(), employeeFound.getLastName()); |
| |
| testResults.set(this.resultId, Boolean.TRUE); |
| } |
| |
| } |
| } |