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/*
*
* Copyright (c) 2006 The Apache Software Foundation
*
* Licensed 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.flow;
import org.apache.qpid.client.AMQConnection;
import org.apache.qpid.client.AMQDestination;
import org.apache.qpid.client.AMQQueue;
import org.apache.qpid.client.AMQSession;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
public class ChannelFlowTest implements MessageListener
{
private int sent;
private int received;
ChannelFlowTest(String broker) throws Exception
{
this(new AMQConnection(broker, "guest", "guest", randomize("Client"), "/test_path"));
}
ChannelFlowTest(AMQConnection connection) throws Exception
{
this(connection, new AMQQueue(randomize("ChannelFlowTest"), true));
}
ChannelFlowTest(AMQConnection connection, AMQDestination destination) throws Exception
{
AMQSession session = (AMQSession) connection.createSession(false, AMQSession.NO_ACKNOWLEDGE, 50,25);
//set up a slow consumer
session.createConsumer(destination).setMessageListener(this);
connection.start();
//create a publisher
MessageProducer producer = session.createProducer(destination);
Message msg = session.createTextMessage("Message");
//publish in bursts that are fast enough to cause channel flow control
for(int i = 0; i < 10; i++)
{
for(int j = 0; j < 100; j++)
{
producer.send(msg);
sent++;
}
waitUntilReceived(sent - 40);
}
waitUntilReceived(sent);
session.close();
connection.close();
}
private synchronized void waitUntilReceived(int count) throws InterruptedException
{
while(received <count)
{
wait();
}
}
public synchronized void onMessage(Message message)
{
try
{
Thread.sleep(50);
received++;
notify();
}
catch (InterruptedException e)
{
e.printStackTrace();
}
}
private static String randomize(String in)
{
return in + System.currentTimeMillis();
}
public static void main(String[] argv) throws Exception
{
new ChannelFlowTest(argv.length == 0 ? "localhost:5672" : argv[0]);
}
}
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