| /** |
| * 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.activemq.transport.failover; |
| |
| import java.util.Vector; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.TimeUnit; |
| import javax.jms.JMSException; |
| import javax.jms.Message; |
| import javax.jms.MessageConsumer; |
| import javax.jms.MessageProducer; |
| import javax.jms.Queue; |
| import javax.jms.Session; |
| import javax.jms.TextMessage; |
| import org.apache.activemq.ActiveMQConnection; |
| import org.apache.activemq.ActiveMQConnectionFactory; |
| import org.apache.activemq.broker.BrokerPlugin; |
| import org.apache.activemq.broker.BrokerPluginSupport; |
| import org.apache.activemq.broker.BrokerService; |
| import org.apache.activemq.broker.ConnectionContext; |
| import org.apache.activemq.command.MessagePull; |
| import org.apache.activemq.command.Response; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.junit.After; |
| import org.junit.Test; |
| |
| |
| import static org.junit.Assert.assertTrue; |
| |
| // see: https://issues.apache.org/activemq/browse/AMQ-2877 |
| public class FailoverPrefetchZeroTest { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(FailoverPrefetchZeroTest.class); |
| private static final String QUEUE_NAME = "FailoverPrefetchZero"; |
| private static final String TRANSPORT_URI = "tcp://localhost:0"; |
| private String url; |
| final int prefetch = 0; |
| BrokerService broker; |
| |
| @After |
| public void stopBroker() throws Exception { |
| if (broker != null) { |
| broker.stop(); |
| } |
| } |
| |
| public void startBroker(boolean deleteAllMessagesOnStartup) throws Exception { |
| broker = createBroker(deleteAllMessagesOnStartup); |
| broker.start(); |
| } |
| |
| public BrokerService createBroker(boolean deleteAllMessagesOnStartup) throws Exception { |
| return createBroker(deleteAllMessagesOnStartup, TRANSPORT_URI); |
| } |
| |
| public BrokerService createBroker(boolean deleteAllMessagesOnStartup, String bindAddress) throws Exception { |
| broker = new BrokerService(); |
| broker.addConnector(bindAddress); |
| broker.setDeleteAllMessagesOnStartup(deleteAllMessagesOnStartup); |
| |
| url = broker.getTransportConnectors().get(0).getConnectUri().toString(); |
| |
| return broker; |
| } |
| |
| @Test |
| public void testPrefetchZeroConsumerThroughRestart() throws Exception { |
| broker = createBroker(true); |
| |
| final CountDownLatch pullDone = new CountDownLatch(1); |
| broker.setPlugins(new BrokerPlugin[]{ |
| new BrokerPluginSupport() { |
| @Override |
| public Response messagePull(ConnectionContext context, final MessagePull pull) throws Exception { |
| context.setDontSendReponse(true); |
| pullDone.countDown(); |
| Executors.newSingleThreadExecutor().execute(new Runnable() { |
| public void run() { |
| LOG.info("Stopping broker on pull: " + pull); |
| try { |
| broker.stop(); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| }); |
| return null; |
| } |
| } |
| }); |
| broker.start(); |
| |
| ActiveMQConnectionFactory cf = new ActiveMQConnectionFactory("failover:(" + url + ")"); |
| cf.setWatchTopicAdvisories(false); |
| |
| final ActiveMQConnection connection = (ActiveMQConnection) cf.createConnection(); |
| connection.start(); |
| |
| final Session consumerSession = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); |
| final Queue destination = consumerSession.createQueue(QUEUE_NAME + "?consumer.prefetchSize=" + prefetch); |
| |
| final MessageConsumer consumer = consumerSession.createConsumer(destination); |
| produceMessage(consumerSession, destination, 1); |
| |
| final CountDownLatch receiveDone = new CountDownLatch(1); |
| final Vector<Message> received = new Vector<Message>(); |
| Executors.newSingleThreadExecutor().execute(new Runnable() { |
| public void run() { |
| try { |
| LOG.info("receive one..."); |
| Message msg = consumer.receive(30000); |
| if (msg != null) { |
| received.add(msg); |
| } |
| receiveDone.countDown(); |
| LOG.info("done receive"); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| }); |
| |
| // will be stopped by the plugin |
| assertTrue("pull completed on broker", pullDone.await(30, TimeUnit.SECONDS)); |
| broker.waitUntilStopped(); |
| broker = createBroker(false, url); |
| broker.start(); |
| |
| assertTrue("receive completed through failover", receiveDone.await(30, TimeUnit.SECONDS)); |
| |
| assertTrue("we got our message:", !received.isEmpty()); |
| |
| connection.close(); |
| } |
| |
| private void produceMessage(final Session producerSession, Queue destination, long count) |
| throws JMSException { |
| MessageProducer producer = producerSession.createProducer(destination); |
| for (int i = 0; i < count; i++) { |
| TextMessage message = producerSession.createTextMessage("Test message " + i); |
| producer.send(message); |
| } |
| producer.close(); |
| } |
| } |