Java tutorial
/* * JBoss, Home of Professional Open Source. * Copyright 2011, Red Hat, Inc., and individual contributors * as indicated by the @author tags. See the copyright.txt file in the * distribution for a full listing of individual contributors. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package org.jboss.as.test.clustering.cluster.web; import static org.jboss.as.test.clustering.ClusterTestUtil.waitForReplication; import java.io.IOException; import java.net.URL; import java.util.concurrent.Callable; import java.util.concurrent.ExecutionException; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import java.util.concurrent.Future; import javax.servlet.http.HttpServletResponse; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.DefaultHttpClient; import org.jboss.arquillian.container.test.api.Deployment; import org.jboss.arquillian.container.test.api.OperateOnDeployment; import org.jboss.arquillian.container.test.api.RunAsClient; import org.jboss.arquillian.container.test.api.TargetsContainer; import org.jboss.arquillian.junit.Arquillian; import org.jboss.arquillian.test.api.ArquillianResource; import org.jboss.as.test.clustering.cluster.ClusterAbstractTestCase; import org.jboss.as.test.clustering.single.web.SimpleServlet; import org.jboss.as.test.http.util.HttpClientUtils; import org.jboss.shrinkwrap.api.Archive; import org.jboss.shrinkwrap.api.ShrinkWrap; import org.jboss.shrinkwrap.api.spec.WebArchive; import org.junit.Assert; import org.junit.Test; import org.junit.runner.RunWith; /** * Validate the <distributable/> works for a two-node cluster. * * @author Paul Ferraro * @author Radoslav Husar */ @RunWith(Arquillian.class) @RunAsClient public class ClusteredWebSimpleTestCase extends ClusterAbstractTestCase { private static final int REQUEST_DURATION = 10000; @Deployment(name = DEPLOYMENT_1, managed = false) @TargetsContainer(CONTAINER_1) public static Archive<?> deployment0() { return getDeployment(); } @Deployment(name = DEPLOYMENT_2, managed = false) @TargetsContainer(CONTAINER_2) public static Archive<?> deployment1() { return getDeployment(); } private static Archive<?> getDeployment() { WebArchive war = ShrinkWrap.create(WebArchive.class, "distributable.war"); war.addClass(SimpleServlet.class); war.setWebXML(ClusteredWebSimpleTestCase.class.getPackage(), "web.xml"); log.info(war.toString(true)); return war; } @Test @OperateOnDeployment(DEPLOYMENT_1) public void testSerialized(@ArquillianResource(SimpleServlet.class) URL baseURL) throws IOException { DefaultHttpClient client = HttpClientUtils.relaxedCookieHttpClient(); // returns the URL of the deployment (http://127.0.0.1:8180/distributable) String url = baseURL.toString(); log.info("URL = " + url); try { HttpResponse response = client.execute(new HttpGet(url + "simple")); Assert.assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode()); Assert.assertEquals(1, Integer.parseInt(response.getFirstHeader("value").getValue())); Assert.assertFalse(Boolean.valueOf(response.getFirstHeader("serialized").getValue())); response.getEntity().getContent().close(); response = client.execute(new HttpGet(url + "simple")); Assert.assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode()); Assert.assertEquals(2, Integer.parseInt(response.getFirstHeader("value").getValue())); // This won't be true unless we have somewhere to which to replicate Assert.assertTrue(Boolean.valueOf(response.getFirstHeader("serialized").getValue())); response.getEntity().getContent().close(); } finally { client.getConnectionManager().shutdown(); } } @Test @OperateOnDeployment(DEPLOYMENT_2) // For change, operate on the 2nd deployment first public void testSessionReplication( @ArquillianResource(SimpleServlet.class) @OperateOnDeployment(DEPLOYMENT_1) URL baseURL1, @ArquillianResource(SimpleServlet.class) @OperateOnDeployment(DEPLOYMENT_2) URL baseURL2) throws IOException { DefaultHttpClient client = HttpClientUtils.relaxedCookieHttpClient(); String url1 = baseURL1.toString() + "simple"; String url2 = baseURL2.toString() + "simple"; try { HttpResponse response = client.execute(new HttpGet(url1)); Assert.assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode()); Assert.assertEquals(1, Integer.parseInt(response.getFirstHeader("value").getValue())); response.getEntity().getContent().close(); // Lets do this twice to have more debug info if failover is slow. response = client.execute(new HttpGet(url1)); Assert.assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode()); Assert.assertEquals(2, Integer.parseInt(response.getFirstHeader("value").getValue())); response.getEntity().getContent().close(); // Lets wait for the session to replicate waitForReplication(GRACE_TIME_TO_REPLICATE); // Now check on the 2nd server // Note that this DOES rely on the fact that both servers are running on the "same" domain, // which is '127.0.0.0'. Otherwise you will have to spoof cookies. @Rado response = client.execute(new HttpGet(url2)); Assert.assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode()); Assert.assertEquals(3, Integer.parseInt(response.getFirstHeader("value").getValue())); response.getEntity().getContent().close(); // Lets do one more check. response = client.execute(new HttpGet(url2)); Assert.assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode()); Assert.assertEquals(4, Integer.parseInt(response.getFirstHeader("value").getValue())); response.getEntity().getContent().close(); } finally { client.getConnectionManager().shutdown(); } } /** * Test that a session is gracefully served when a clustered application is undeployed. */ @Test public void testGracefulServeOnUndeploy( @ArquillianResource(SimpleServlet.class) @OperateOnDeployment(DEPLOYMENT_1) URL baseURL1) throws Exception { this.abstractGracefulServe(baseURL1, true); } /** * Test that a session is gracefully served when clustered AS instanced is shutdown. */ @Test public void testGracefulServeOnShutdown( @ArquillianResource(SimpleServlet.class) @OperateOnDeployment(DEPLOYMENT_1) URL baseURL1) throws Exception { this.abstractGracefulServe(baseURL1, false); } private void abstractGracefulServe(URL baseURL1, boolean undeployOnly) throws Exception { final DefaultHttpClient client = HttpClientUtils.relaxedCookieHttpClient(); String url1 = baseURL1.toString() + "simple"; // Make sure a normal request will succeed HttpResponse response = client.execute(new HttpGet(url1)); Assert.assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode()); response.getEntity().getContent().close(); // Send a long request - in parallel String longRunningUrl = url1 + "?" + SimpleServlet.REQUEST_DURATION_PARAM + "=" + REQUEST_DURATION; ExecutorService executor = Executors.newSingleThreadExecutor(); Future<HttpResponse> future = executor.submit(new RequestTask(client, longRunningUrl)); // Make sure long request has started Thread.sleep(1000); if (undeployOnly) { // Undeploy the app only. undeploy(DEPLOYMENT_1); } else { // Shutdown server. stop(CONTAINER_1); } // Get result of long request // This request should succeed since it initiated before server shutdown try { response = future.get(); Assert.assertEquals("Request should succeed since it initiated before undeply or shutdown.", HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode()); response.getEntity().getContent().close(); } catch (ExecutionException e) { e.printStackTrace(System.err); Assert.fail(e.getCause().getMessage()); } if (undeployOnly) { // If we are only undeploying, then subsequent requests should return 404. response = client.execute(new HttpGet(url1)); Assert.assertEquals("If we are only undeploying, then subsequent requests should return 404.", HttpServletResponse.SC_NOT_FOUND, response.getStatusLine().getStatusCode()); response.getEntity().getContent().close(); } } /** * Request task to request a long running URL and then undeploy / shutdown the server. */ private class RequestTask implements Callable<HttpResponse> { private HttpClient client; private String url; RequestTask(HttpClient client, String url) { this.client = client; this.url = url; } @Override public HttpResponse call() throws Exception { try { return client.execute(new HttpGet(url)); } finally { client.getConnectionManager().closeExpiredConnections(); } } } }