/**
* 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);
}
}