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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.latency;
import org.apache.qpid.client.AMQConnection;
import org.apache.qpid.client.AMQQueue;
import org.apache.qpid.client.AMQDestination;
import org.apache.qpid.client.AMQSession;
import org.apache.qpid.exchange.ExchangeDefaults;
import org.apache.qpid.framing.AMQShortString;
import javax.jms.MessageProducer;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.JMSException;
import javax.jms.TextMessage;
import javax.jms.BytesMessage;
public class LatencyTest implements MessageListener
{
private volatile boolean waiting;
private int sent;
private int received;
private final byte[] data;
private long min = Long.MAX_VALUE;
private long max = 0;
private long total = 0;
LatencyTest(String broker, int count, int delay, int length) throws Exception
{
this(new AMQConnection(broker, "guest", "guest", randomize("Client"), "/test"), count, delay, length);
}
LatencyTest(AMQConnection connection, int count, int delay, int length) throws Exception
{
this(connection, new AMQQueue(connection.getDefaultQueueExchangeName(), new AMQShortString(randomize("LatencyTest")), true), count, delay, length);
}
LatencyTest(AMQConnection connection, AMQDestination destination, int count, int delay, int length) throws Exception
{
AMQSession session = (AMQSession) connection.createSession(false, AMQSession.NO_ACKNOWLEDGE);
data = new byte[length];
for(int i = 0; i < data.length; i++)
{
data[i] = (byte) (i % 100);
}
//set up a consumer
session.createConsumer(destination).setMessageListener(this);
connection.start();
//create a publisher
MessageProducer producer = session.createProducer(destination, false, false, true);
//publish at a low volume
for(int i = 0; i < count; i++)
{
BytesMessage msg = session.createBytesMessage();
msg.writeBytes(data);
msg.setStringProperty("sent-at", Long.toString(System.nanoTime()));
producer.send(msg);
Thread.sleep(delay);
if(++sent % 100 == 0)
{
System.out.println("Sent " + sent + " of " + count);
}
}
waitUntilReceived(sent);
session.close();
connection.close();
System.out.println("Latency (in nanoseconds): avg=" + (total/sent) + ", min=" + min + ", max=" + max
+ ", avg(discarding min and max)=" + ((total - min - max) / (sent - 2)));
}
private synchronized void waitUntilReceived(int count) throws InterruptedException
{
waiting = true;
while(received < count)
{
wait();
}
waiting = false;
}
public void onMessage(Message message)
{
received++;
try
{
long sent = Long.parseLong(message.getStringProperty("sent-at"));
long time = System.nanoTime() - sent;
total += time;
min = Math.min(min, time);
max = Math.max(max, time);
}
catch (JMSException e)
{
e.printStackTrace();
}
if(waiting){
synchronized(this)
{
notify();
}
}
}
private static String randomize(String in)
{
return in + System.currentTimeMillis();
}
public static void main(String[] argv) throws Exception
{
String host = argv.length > 0 ? argv[0] : "localhost:5672";
if("-help".equals(host))
{
System.out.println("Usage: <broker> <message count> <delay between messages> <message size>");
}
int count = argv.length > 1 ? Integer.parseInt(argv[1]) : 1000;
int delay = argv.length > 2 ? Integer.parseInt(argv[2]) : 1000;
int size = argv.length > 3 ? Integer.parseInt(argv[3]) : 512;
new LatencyTest(host, count, delay, size);
}
}
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