| /** |
| * 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.openejb.core.singleton; |
| |
| import junit.framework.TestCase; |
| import org.apache.openejb.assembler.classic.Assembler; |
| import org.apache.openejb.assembler.classic.SecurityServiceInfo; |
| import org.apache.openejb.assembler.classic.SingletonSessionContainerInfo; |
| import org.apache.openejb.assembler.classic.TransactionServiceInfo; |
| import org.apache.openejb.config.ConfigurationFactory; |
| import org.apache.openejb.core.ivm.naming.InitContextFactory; |
| import org.apache.openejb.jee.EjbJar; |
| import org.apache.openejb.jee.SingletonBean; |
| |
| import javax.annotation.PostConstruct; |
| import javax.ejb.NoSuchEJBException; |
| import javax.naming.Context; |
| import javax.naming.InitialContext; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.CyclicBarrier; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| /** |
| * @version $Rev: 894333 $ $Date: 2009-12-29 09:58:53 +0000 (Tue, 29 Dec 2009) $ |
| */ |
| public class SingletonLazyInstantiationTest extends TestCase { |
| |
| private static final AtomicInteger accesses = new AtomicInteger(); |
| private static final AtomicBoolean exception = new AtomicBoolean(); |
| |
| @Override |
| protected void setUp() throws Exception { |
| exception.set(false); |
| MySingleton.instances.set(0); |
| |
| System.setProperty(javax.naming.Context.INITIAL_CONTEXT_FACTORY, InitContextFactory.class.getName()); |
| |
| ConfigurationFactory config = new ConfigurationFactory(); |
| Assembler assembler = new Assembler(); |
| |
| assembler.createTransactionManager(config.configureService(TransactionServiceInfo.class)); |
| assembler.createSecurityService(config.configureService(SecurityServiceInfo.class)); |
| |
| // containers |
| assembler.createContainer(config.configureService(SingletonSessionContainerInfo.class)); |
| |
| // Setup the descriptor information |
| |
| EjbJar ejbJar = new EjbJar(); |
| ejbJar.addEnterpriseBean(new SingletonBean(MySingleton.class)); |
| |
| assembler.createApplication(config.configureApplication(ejbJar)); |
| } |
| |
| public void testSuccess() throws Exception { |
| Context context = new InitialContext(); |
| |
| int threads = 200; |
| CyclicBarrier start = new CyclicBarrier(threads + 1); |
| CountDownLatch finish = new CountDownLatch(threads); |
| |
| for (int i = threads; i > 0; i--) { |
| Thread thread = new Thread(new Client(context, start, finish)); |
| thread.setDaemon(true); |
| thread.start(); |
| } |
| |
| start.await(30, TimeUnit.SECONDS); |
| |
| assertFalse("All threads did not start", start.isBroken()); |
| |
| assertTrue("Client threads did not complete", finish.await(30, TimeUnit.SECONDS)); |
| |
| assertEquals("incorrect number of instances", 1, MySingleton.instances.get()); |
| |
| // Invoke a business method just to be sure |
| MySingletonLocal singletonLocal = (MySingletonLocal) context.lookup("MySingletonLocal"); |
| assertEquals(1, singletonLocal.getId()); |
| } |
| |
| public void testFailure() throws Throwable { |
| |
| Exception exception1 = new Exception("Inner exception"); |
| exception1.fillInStackTrace(); |
| |
| exception.set(true); |
| |
| Context context = new InitialContext(); |
| |
| int threads = 200; |
| CyclicBarrier start = new CyclicBarrier(threads + 1); |
| CountDownLatch finish = new CountDownLatch(threads); |
| |
| for (int i = threads; i > 0; i--) { |
| Thread thread = new Thread(new Client(context, start, finish)); |
| thread.setDaemon(true); |
| thread.start(); |
| } |
| |
| start.await(30, TimeUnit.SECONDS); |
| |
| assertFalse("All threads did not start", start.isBroken()); |
| |
| assertTrue("Client threads did not complete", finish.await(30, TimeUnit.SECONDS)); |
| |
| assertEquals("incorrect number of instances", 1, MySingleton.instances.get()); |
| |
| // Invoke a business method just to be sure |
| MySingletonLocal singletonLocal = (MySingletonLocal) context.lookup("MySingletonLocal"); |
| try { |
| assertEquals(1, singletonLocal.getId()); |
| fail("Expected NoSuchEJBException"); |
| } catch (NoSuchEJBException e) { |
| // pass |
| } |
| } |
| |
| public static class Client implements Runnable { |
| private final CyclicBarrier start; |
| private final CountDownLatch finish; |
| private final Context context; |
| |
| public Client(Context context, CyclicBarrier start, CountDownLatch finish) { |
| this.context = context; |
| this.start = start; |
| this.finish = finish; |
| } |
| |
| public void run() { |
| try { |
| log("waiting to start"); |
| |
| if (start != null) start.await(20, TimeUnit.SECONDS); |
| |
| log("looking up the singleton"); |
| |
| MySingletonLocal singletonLocal = (MySingletonLocal) context.lookup("MySingletonLocal"); |
| |
| // Have to invoke a method to ensure creation |
| singletonLocal.getId(); |
| |
| log("singleton retrieved " + singletonLocal); |
| } catch (NoSuchEJBException e) { |
| if (!exception.get()) { |
| synchronized (System.out) { |
| log("exception"); |
| e.printStackTrace(System.out); |
| } |
| throw new RuntimeException(e); |
| } |
| } catch (Exception e) { |
| synchronized (System.out) { |
| log("exception"); |
| e.printStackTrace(System.out); |
| } |
| throw new RuntimeException(e); |
| } finally { |
| log("finished"); |
| finish.countDown(); |
| } |
| } |
| |
| } |
| |
| public static void log(String s) { |
| // System.out.println(Thread.currentThread().getName() + " : " + s); |
| } |
| |
| |
| public static interface MySingletonLocal { |
| public int getId(); |
| } |
| |
| public static class MySingleton implements MySingletonLocal { |
| public static final AtomicInteger instances = new AtomicInteger(); |
| private int id; |
| |
| @PostConstruct |
| public void construct() throws Exception { |
| id = instances.incrementAndGet(); |
| log("constructing singleton: " + id); |
| Thread.sleep(5000); |
| if (exception.get()) throw new Exception("I threw an exception"); |
| } |
| |
| public int getId() { |
| return id; |
| } |
| } |
| } |