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/*
* 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.qpid.client;
/**
* QPID-293 Setting MessageListener after connection has started can cause messages to be "lost" on a internal delivery
* queue <p/> The message delivery process: Mina puts a message on _queue in AMQSession and the dispatcher thread
* take()s from here and dispatches to the _consumers. If the _consumer1 doesn't have a message listener set at
* connection start then messages are stored on _synchronousQueue (which needs to be > 1 to pass JMS TCK as multiple
* consumers on a session can run in any order and a synchronous put/poll will block the dispatcher). <p/> When setting
* the message listener later the _synchronousQueue is just poll()'ed and the first message delivered the remaining
* messages will be left on the queue and lost, subsequent messages on the session will arrive first.
*/
public class MessageListenerMultiConsumerImmediatePrefetch extends MessageListenerMultiConsumerTest
{
protected void setUp() throws Exception
{
System.setProperty(AMQSession.IMMEDIATE_PREFETCH, "true");
super.setUp();
}
public static junit.framework.Test suite()
{
return new junit.framework.TestSuite(MessageListenerMultiConsumerImmediatePrefetch.class);
}
}
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