| /** |
| * 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.usecases; |
| |
| import junit.framework.TestCase; |
| import org.apache.activemq.ActiveMQConnectionFactory; |
| import org.apache.activemq.advisory.AdvisorySupport; |
| import org.apache.activemq.broker.BrokerService; |
| import org.apache.activemq.broker.region.policy.PolicyEntry; |
| import org.apache.activemq.broker.region.policy.PolicyMap; |
| import org.apache.activemq.command.ActiveMQTopic; |
| import org.junit.Assert; |
| |
| import javax.jms.Connection; |
| import javax.jms.Message; |
| import javax.jms.MessageConsumer; |
| import javax.jms.MessageProducer; |
| import javax.jms.Session; |
| |
| |
| /** |
| * Checks to see if "slow consumer advisory messages" are generated when |
| * small number of messages (2) are published to a topic which has a subscriber |
| * with a prefetch of one set. |
| * |
| */ |
| |
| public class TopicSubscriptionSlowConsumerTest extends TestCase { |
| |
| private static final String TOPIC_NAME = "slow.consumer"; |
| Connection connection; |
| private Session session; |
| private ActiveMQTopic destination; |
| private MessageProducer producer; |
| private MessageConsumer consumer; |
| private BrokerService brokerService; |
| |
| |
| public void setUp() throws Exception { |
| |
| brokerService = createBroker(); |
| |
| ActiveMQConnectionFactory activeMQConnectionFactory = new ActiveMQConnectionFactory("vm://localhost"); |
| |
| activeMQConnectionFactory.setWatchTopicAdvisories(true); |
| connection = activeMQConnectionFactory.createConnection(); |
| session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); |
| destination = new ActiveMQTopic(TOPIC_NAME); |
| producer = session.createProducer(destination); |
| |
| connection.start(); |
| } |
| |
| |
| |
| public void testPrefetchValueOne() throws Exception{ |
| |
| ActiveMQTopic consumerDestination = new ActiveMQTopic(TOPIC_NAME+"?consumer.prefetchSize=1"); |
| consumer = session.createConsumer(consumerDestination); |
| |
| //add a consumer to the slow consumer advisory topic. |
| ActiveMQTopic slowConsumerAdvisoryTopic = AdvisorySupport.getSlowConsumerAdvisoryTopic(destination); |
| MessageConsumer slowConsumerAdvisory = session.createConsumer(slowConsumerAdvisoryTopic); |
| |
| //publish 2 messages |
| Message txtMessage = session.createTextMessage("Sample Text Message"); |
| for(int i= 0; i<2; i++){ |
| producer.send(txtMessage); |
| } |
| |
| //consume 2 messages |
| for(int i= 0; i<2; i++){ |
| Message receivedMsg = consumer.receive(100); |
| Assert.assertNotNull("received msg "+i+" should not be null",receivedMsg); |
| } |
| |
| //check for "slow consumer" advisory message |
| Message slowAdvisoryMessage = slowConsumerAdvisory.receive(100); |
| Assert.assertNull( "should not have received a slow consumer advisory message",slowAdvisoryMessage); |
| |
| } |
| |
| |
| |
| public void tearDown() throws Exception { |
| consumer.close(); |
| producer.close(); |
| session.close(); |
| connection.close(); |
| brokerService.stop(); |
| } |
| |
| |
| //helper method to create a broker with slow consumer advisory turned on |
| private BrokerService createBroker() throws Exception { |
| BrokerService broker = new BrokerService(); |
| broker.setBrokerName("localhost"); |
| broker.setUseJmx(true); |
| broker.setDeleteAllMessagesOnStartup(true); |
| broker.addConnector("vm://localhost"); |
| |
| PolicyMap policyMap = new PolicyMap(); |
| PolicyEntry defaultEntry = new PolicyEntry(); |
| defaultEntry.setAdvisoryForSlowConsumers(true); |
| |
| policyMap.setDefaultEntry(defaultEntry); |
| |
| broker.setDestinationPolicy(policyMap); |
| broker.start(); |
| broker.waitUntilStarted(); |
| return broker; |
| } |
| |
| } |