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ActiveMQ example source code file (RoundRobinDispatchPolicyTest.java)
The ActiveMQ RoundRobinDispatchPolicyTest.java source code/** * 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.broker.policy; import javax.jms.Connection; import javax.jms.Destination; import javax.jms.MessageConsumer; import javax.jms.Session; import org.apache.activemq.broker.BrokerService; import org.apache.activemq.broker.QueueSubscriptionTest; import org.apache.activemq.broker.region.policy.PolicyEntry; import org.apache.activemq.broker.region.policy.PolicyMap; import org.apache.activemq.broker.region.policy.RoundRobinDispatchPolicy; public class RoundRobinDispatchPolicyTest extends QueueSubscriptionTest { protected BrokerService createBroker() throws Exception { BrokerService broker = super.createBroker(); PolicyEntry policy = new PolicyEntry(); policy.setDispatchPolicy(new RoundRobinDispatchPolicy()); PolicyMap pMap = new PolicyMap(); pMap.setDefaultEntry(policy); broker.setDestinationPolicy(pMap); return broker; } public void testOneProducerTwoConsumersSmallMessagesOnePrefetch() throws Exception { super.testOneProducerTwoConsumersSmallMessagesOnePrefetch(); // Ensure that each consumer should have received at least one message // We cannot guarantee that messages will be equally divided, since // prefetch is one assertEachConsumerReceivedAtLeastXMessages(1); } public void testOneProducerTwoConsumersSmallMessagesLargePrefetch() throws Exception { super.testOneProducerTwoConsumersSmallMessagesLargePrefetch(); assertMessagesDividedAmongConsumers(); } public void testOneProducerTwoConsumersLargeMessagesOnePrefetch() throws Exception { super.testOneProducerTwoConsumersLargeMessagesOnePrefetch(); // Ensure that each consumer should have received at least one message // We cannot guarantee that messages will be equally divided, since // prefetch is one assertEachConsumerReceivedAtLeastXMessages(1); } public void testOneProducerTwoConsumersLargeMessagesLargePrefetch() throws Exception { super.testOneProducerTwoConsumersLargeMessagesLargePrefetch(); assertMessagesDividedAmongConsumers(); } public void testOneProducerManyConsumersFewMessages() throws Exception { super.testOneProducerManyConsumersFewMessages(); // Since there are more consumers, each consumer should have received at // most one message only assertMessagesDividedAmongConsumers(); } public void testOneProducerManyConsumersManyMessages() throws Exception { super.testOneProducerManyConsumersManyMessages(); assertMessagesDividedAmongConsumers(); } public void testManyProducersManyConsumers() throws Exception { super.testManyProducersManyConsumers(); assertMessagesDividedAmongConsumers(); } public void testOneProducerTwoMatchingConsumersOneNotMatchingConsumer() throws Exception { // Create consumer that won't consume any message createMessageConsumer(createConnectionFactory().createConnection(), createDestination(), "JMSPriority<1"); super.testOneProducerTwoConsumersSmallMessagesLargePrefetch(); assertMessagesDividedAmongConsumers(); } protected MessageConsumer createMessageConsumer(Connection conn, Destination dest, String selector) throws Exception { connections.add(conn); Session sess = conn.createSession(false, Session.AUTO_ACKNOWLEDGE); final MessageConsumer consumer = sess.createConsumer(dest, selector); conn.start(); return consumer; } public void assertMessagesDividedAmongConsumers() { assertEachConsumerReceivedAtLeastXMessages((messageCount * producerCount) / consumerCount); assertEachConsumerReceivedAtMostXMessages(((messageCount * producerCount) / consumerCount) + 1); } } Other ActiveMQ examples (source code examples)Here is a short list of links related to this ActiveMQ RoundRobinDispatchPolicyTest.java source code file: |
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