/**
* 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.server.ejbd;
import junit.framework.TestCase;
import org.apache.openejb.OpenEJB;
import org.apache.openejb.client.ConnectionPoolTimeoutException;
import org.apache.openejb.client.Client;
import org.apache.openejb.util.CountingLatch;
import org.apache.openejb.assembler.classic.Assembler;
import org.apache.openejb.assembler.classic.StatelessSessionContainerInfo;
import org.apache.openejb.config.ConfigurationFactory;
import org.apache.openejb.core.ServerFederation;
import org.apache.openejb.jee.EjbJar;
import org.apache.openejb.jee.StatelessBean;
import org.apache.openejb.loader.SystemInstance;
import org.apache.openejb.server.ServiceDaemon;
import org.apache.openejb.server.ServicePool;
import org.apache.openejb.server.ServerServiceFilter;
import org.apache.openejb.server.ServerService;
import org.apache.openejb.server.ServiceException;
import javax.ejb.Remote;
import javax.ejb.Stateless;
import javax.ejb.ConcurrentAccessTimeoutException;
import javax.naming.Context;
import javax.naming.InitialContext;
import java.util.Properties;
import java.util.List;
import java.util.ArrayList;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import java.net.URI;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
/**
* @version $Rev$ $Date$
*/
public class FullPoolFailoverTest extends TestCase {
private Counter counter;
private static CountDownLatch resume;
private static CountingLatch paused;
private static final URI red = URI.create("red");
private static final URI blue = URI.create("blue");
public static List<URI> hits = new ArrayList<URI>();
public static List<URI> hold = new ArrayList<URI>();
public void testStatelessBeanTimeout() throws Exception {
setup(10, 20);
Client.addRetryCondition(ConcurrentAccessTimeoutException.class);
resume = new CountDownLatch(1);
paused = new CountingLatch(10);
// Do a business method...
Runnable r = new Runnable(){
public void run(){
counter.hit();
}
};
hold.add(red);
for (int i = 0; i < 10; i++) {
Thread t = new Thread(r);
t.start();
}
// Wait for the beans to reach the start line
assertTrue("expected 10 invocations", paused.await(3000, TimeUnit.MILLISECONDS));
assertEquals(10, CounterBean.instances.get());
assertEquals(10, hits.size());
List<URI> expected = new ArrayList<URI>();
for (int i = 0; i < 10; i++) expected.add(red);
assertEquals(expected, hits);
// This one should failover to the blue server
try {
counter.hit();
fail("Expected ConcurrentAccessTimeoutException");
} catch (ConcurrentAccessTimeoutException e) {
// both "red" and "blue" servers are technically using the
// same stateless session bean pool, which is fully busy
// but ... this exception should have come from the "blue" server
}
// one more hit on red that should have failed over to blue
expected.add(red);
expected.add(blue);
assertEquals(expected, hits);
// A second invoke on this should now have using talking to blue
// then it should fail back to red
try {
counter.hit();
fail("Expected ConcurrentAccessTimeoutException");
} catch (ConcurrentAccessTimeoutException e) {
}
expected.add(blue);
expected.add(red);
assertEquals(expected, hits);
resume.countDown(); // go
}
public void testConnectionPoolTimeout() throws Exception {
setup(30, 10);
resume = new CountDownLatch(1);
// This is used to cause invoking threads to pause
// so all pools can be depleted
paused = new CountingLatch(10);
// Do a business method...
Runnable r = new Runnable(){
public void run(){
counter.hit();
}
};
hold.add(red);
List<URI> expected = new ArrayList<URI>();
for (int i = 0; i < 10; i++) {
expected.add(red);
Thread t = new Thread(r);
t.start();
}
// Wait for the beans to reach the start line
assertTrue("expected 10 invocations", paused.await(3000, TimeUnit.MILLISECONDS));
assertEquals(10, CounterBean.instances.get());
assertEquals(10, hits.size());
assertEquals(expected, hits);
// This one should failover to the blue server
URI uri = counter.hit();
assertEquals(blue, uri);
// the red pool is fully busy, so we should have failed over to blue
expected.add(blue);
assertEquals(expected, hits);
// Now hold blue as well
hold.add(blue);
for (int i = 0; i < 10; i++) {
paused.countUp();
expected.add(blue);
Thread t = new Thread(r);
t.start();
}
// Wait for the beans to reach the start line
assertTrue("expected 20 invocations", paused.await(3000, TimeUnit.MILLISECONDS));
// The extra 10 invocations should all have been on the "blue" server
assertEquals(expected, hits);
// A second invoke on this should now have using talking to blue
// then it should fail back to red
try {
counter.hit();
fail("Expected javax.ejb.EJBException");
} catch (javax.ejb.EJBException e) {
}
// there should be no hits on any server, both connection pools are fully busy
assertEquals(expected, hits);
resume.countDown(); // go
}
@Override
protected void tearDown() throws Exception {
super.tearDown();
for (ServiceDaemon daemon : daemons) daemon.stop();
OpenEJB.destroy();
}
private final List<ServiceDaemon> daemons = new ArrayList<ServiceDaemon>();
protected void setup(int statelessPoolSize, int connectionPoolSize) throws Exception {
Properties initProps = new Properties();
initProps.setProperty("openejb.deployments.classpath.include", "");
initProps.setProperty("openejb.deployments.classpath.filter.descriptors", "true");
OpenEJB.init(initProps, new ServerFederation());
System.setProperty("openejb.client.connectionpool.size", "" + connectionPoolSize);
EjbServer ejbServer = new EjbServer();
ejbServer.init(new Properties());
daemons.add(createServiceDaemon(connectionPoolSize, ejbServer, red));
daemons.add(createServiceDaemon(connectionPoolSize, ejbServer, blue));
ConfigurationFactory config = new ConfigurationFactory();
Assembler assembler = SystemInstance.get().getComponent(Assembler.class);
// containers
StatelessSessionContainerInfo statelessContainerInfo = config.configureService(StatelessSessionContainerInfo.class);
statelessContainerInfo.properties.setProperty("TimeOut", "100");
statelessContainerInfo.properties.setProperty("PoolSize", "" + statelessPoolSize);
statelessContainerInfo.properties.setProperty("MinSize", "2");
statelessContainerInfo.properties.setProperty("StrictPooling", "true");
assembler.createContainer(statelessContainerInfo);
// Setup the descriptor information
StatelessBean bean = new StatelessBean(CounterBean.class);
bean.addBusinessLocal(Counter.class.getName());
bean.addBusinessRemote(RemoteCounter.class.getName());
bean.addPostConstruct("init");
bean.addPreDestroy("destroy");
EjbJar ejbJar = new EjbJar();
ejbJar.addEnterpriseBean(bean);
CounterBean.instances.set(0);
assembler.createApplication(config.configureApplication(ejbJar));
String failoverURI = "failover:sticky:";
failoverURI += "ejbd://127.0.0.1:" + daemons.get(0).getPort() + "?red,";
failoverURI += "ejbd://127.0.0.1:" + daemons.get(1).getPort() + "?blue";
Properties props = new Properties();
props.put("java.naming.factory.initial", "org.apache.openejb.client.RemoteInitialContextFactory");
props.put("java.naming.provider.url", failoverURI);
Context context = new InitialContext(props);
counter = (Counter) context.lookup("CounterBeanRemote");
hold.clear();
hits.clear();
}
private ServiceDaemon createServiceDaemon(int poolSize, EjbServer ejbServer, URI uri) throws ServiceException {
ServiceIdentifier serviceIdentifier = new ServiceIdentifier(ejbServer, uri);
KeepAliveServer keepAliveServer = new KeepAliveServer(serviceIdentifier);
ServicePool pool = new ServicePool(keepAliveServer, "ejbd", poolSize);
ServiceDaemon daemon = new ServiceDaemon(pool, 0, "localhost");
daemon.start();
return daemon;
}
public static ThreadLocal<URI> host = new ThreadLocal<URI>();
public static class ServiceIdentifier extends ServerServiceFilter {
private final URI me;
public ServiceIdentifier(ServerService service, URI me) {
super(service);
this.me = me;
}
@Override
public void service(InputStream in, OutputStream out) throws ServiceException, IOException {
synchronized (hits){
hits.add(me);
}
host.set(me);
try {
super.service(in, out);
} finally {
host.remove();
}
}
}
public static Object lock = new Object[]{};
private static void comment(String x) {
// synchronized(lock){
// System.out.println(x);
// System.out.flush();
// }
}
public static interface Counter {
int count();
URI hit();
}
@Remote
public static interface RemoteCounter extends Counter {
}
@Stateless
public static class CounterBean implements Counter, RemoteCounter {
public static AtomicInteger instances = new AtomicInteger();
private int count;
public CounterBean() {
count = instances.incrementAndGet();
}
public int count() {
return instances.get();
}
public URI hit() {
URI uri = host.get();
if (hold.contains(uri)) {
try {
paused.countDown();
resume.await();
} catch (InterruptedException e) {
Thread.interrupted();
}
}
return uri;
}
public void init() {
}
public void destroy() {
}
}
}