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.URI; import java.net.URISyntaxException; 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.client.utils.HttpClientUtils; import org.apache.http.impl.client.CloseableHttpClient; 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.Mutable; import org.jboss.as.test.clustering.single.web.SimpleServlet; import org.jboss.as.test.http.util.TestHttpClientUtils; 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 that <distributable/> works for a two-node cluster. * * @author Paul Ferraro * @author Radoslav Husar */ @RunWith(Arquillian.class) @RunAsClient public class DistributableTestCase 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.addClasses(SimpleServlet.class, Mutable.class); war.setWebXML(DistributableTestCase.class.getPackage(), "web.xml"); return war; } @Test @OperateOnDeployment(DEPLOYMENT_1) public void testSerialized(@ArquillianResource(SimpleServlet.class) URL baseURL) throws IOException, URISyntaxException { // returns the URL of the deployment (http://127.0.0.1:8180/distributable) URI uri = SimpleServlet.createURI(baseURL); try (CloseableHttpClient client = TestHttpClientUtils.promiscuousCookieHttpClient()) { HttpResponse response = client.execute(new HttpGet(uri)); try { 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())); } finally { HttpClientUtils.closeQuietly(response); } response = client.execute(new HttpGet(uri)); try { 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())); } finally { HttpClientUtils.closeQuietly(response); } } } @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, URISyntaxException { URI url1 = SimpleServlet.createURI(baseURL1); URI url2 = SimpleServlet.createURI(baseURL2); try (CloseableHttpClient client = TestHttpClientUtils.promiscuousCookieHttpClient()) { HttpResponse response = client.execute(new HttpGet(url1)); try { Assert.assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode()); Assert.assertEquals(1, Integer.parseInt(response.getFirstHeader("value").getValue())); } finally { HttpClientUtils.closeQuietly(response); } // Lets do this twice to have more debug info if failover is slow. response = client.execute(new HttpGet(url1)); try { Assert.assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode()); Assert.assertEquals(2, Integer.parseInt(response.getFirstHeader("value").getValue())); } finally { HttpClientUtils.closeQuietly(response); } // Lets wait for the session to replicate waitForReplication(GRACE_TIME_TO_REPLICATE); // Now check on the 2nd server response = client.execute(new HttpGet(url2)); try { Assert.assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode()); Assert.assertEquals(3, Integer.parseInt(response.getFirstHeader("value").getValue())); } finally { HttpClientUtils.closeQuietly(response); } // Lets do one more check. response = client.execute(new HttpGet(url2)); try { Assert.assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode()); Assert.assertEquals(4, Integer.parseInt(response.getFirstHeader("value").getValue())); } finally { HttpClientUtils.closeQuietly(response); } } } /** * 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.testGracefulServe(baseURL1, new RedeployLifecycle()); } /** * 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.testGracefulServe(baseURL1, new RestartLifecycle()); } private void testGracefulServe(URL baseURL, Lifecycle lifecycle) throws URISyntaxException, IOException, InterruptedException { try (CloseableHttpClient client = TestHttpClientUtils.promiscuousCookieHttpClient()) { URI uri = SimpleServlet.createURI(baseURL); // Make sure a normal request will succeed HttpResponse response = client.execute(new HttpGet(uri)); try { Assert.assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode()); } finally { HttpClientUtils.closeQuietly(response); } // Send a long request - in parallel URI longRunningURI = SimpleServlet.createURI(baseURL, REQUEST_DURATION); ExecutorService executor = Executors.newSingleThreadExecutor(); Future<HttpResponse> future = executor.submit(new RequestTask(client, longRunningURI)); // Make sure long request has started Thread.sleep(1000); lifecycle.stop(NODE_1); // Get result of long request // This request should succeed since it initiated before server shutdown try { response = future.get(); try { Assert.assertEquals("Request should succeed since it initiated before undeply or shutdown.", HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode()); } finally { HttpClientUtils.closeQuietly(response); } } catch (ExecutionException e) { e.printStackTrace(System.err); Assert.fail(e.getCause().getMessage()); } } } /** * Request task to request a long running URL and then undeploy / shutdown the server. */ private class RequestTask implements Callable<HttpResponse> { private final HttpClient client; private final URI uri; RequestTask(HttpClient client, URI uri) { this.client = client; this.uri = uri; } @Override public HttpResponse call() throws Exception { return this.client.execute(new HttpGet(this.uri)); } } }