The mqping utility is similar to the Unix ping utility in some regards
/*
* @(#)mqping.java 1.1 04/06/07
*
* @version mqping.java 04/06/07 1.1
*
* Copyright (c) 2004 Sun Microsystems, Inc. All Rights Reserved.
*
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
* the design, construction, operation or maintenance of any nuclear
* facility. Licensee represents and warrants that it will not use or
* redistribute the Software for such purposes.
*/
@(#)README 1.4 03/22/05
================================================================================
mqping utility
Description
-----------
The mqping utility is similar to the Unix ping utility in some regards.
With mqping, messages are sent to and received from a running broker.
The utility measures the round trip time. The utility allows the user
to control the size of the message, the destination type, delivery mode
and send interval.
Files
-----
mqping.java Source file for this example.
*.class Prebuilt Java class files for this example.
README This file.
Configuring the environment
---------------------------
To recompile or run this example, you need to set CLASSPATH
to include at least:
jms.jar
imq.jar
directory containing this example
A detailed guideline on setting CLASSPATH is found in the README
file in the jms demo subdirectory as well as in the "Quick Start
Tutorial" in the Sun Java(tm) System Message Queue Developer's Guide.
The following are examples for setting CLASSPATH on the different
platforms. These commands are run from the directory containing
this example.
On Solaris:
setenv CLASSPATH /usr/share/lib/jms.jar:/usr/share/lib/imq.jar:.
On Windows:
set CLASSPATH=%IMQ_HOME%\lib\jms.jar;%IMQ_HOME%\lib\imq.jar;.
On Linux:
setenv CLASSPATH /opt/sun/mq/share/lib/jms.jar:
/opt/sun/mq/share/lib/imq.jar:.
#####hpux-dev#####
On HP-UX:
export CLASSPATH=/opt/sun/mq/share/lib/jms.jar:/opt/sun/mq/share/lib/imq.jar:.
Note that it is assumed that the above export command is run on
BASH shell
Building the example
--------------------
Run the following:
javac mqping.java
Running the example
-------------------
In the simplest form the mqping utility can be run with no options:
java mqping
This utility takes the following arguments:
-t dest_type Specify the optional destination type. Valid values
are 't' or 'q'. Default: 'q'
-r Optionally indicate the message is persistent.
Not specifying this option indicates the message
should not be persisted.
-s size Specify the optional size of the messages in bytes.
Default: 1024
-i delay The interval (in seconds) between successive
transmissions. Default: 0 (no delay)
By default mqping will connect to the broker running on localhost:7676.
You can use -DimqAddressList attribute to change the host, port and
transport:
java -DimqAddressList=mq://<host>:<port>/jms mqping
/*
* @(#)mqping.java 1.1 04/06/07
*
* @version mqping.java 04/06/07 1.1
*
* Copyright (c) 2004 Sun Microsystems, Inc. All Rights Reserved.
*
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
* the design, construction, operation or maintenance of any nuclear
* facility. Licensee represents and warrants that it will not use or
* redistribute the Software for such purposes.
*/
import javax.jms.*;
import java.util.*;
/**
*
* Version 1.0
*
* The mqping utility is similar to the Unix ping utility in some regards.
* With mqping, messages are sent to and received from a running broker.
* The utility measures the round trip time. The utility allows the user
* to control the size of the message, the destination type, delivery mode
* and send interval.
*
* This utility takes the following arguments:
* -t dest_type Specify the optional destination type. Valid values
* are 't' or 'q'. Default: 'q'
* -r Optionally indicate the message is persistent.
* Not specifying this option indicates the message
* should not be persisted.
* -s size Specify the optional size of the messages in bytes.
* Default: 1024
* -i delay The interval (in seconds) between successive
* transmissions. Default: 0 (no delay)
*
* By default mqping will connect to the broker running on localhost:7676.
* You can use -DimqAddressList attribute to change the host, port and
* transport:
*
* java mqping -DimqAddressList=mq://<host>:<port>/jms
*
*/
public class mqping {
ConnectionFactory connectionFactory;
Connection connection;
Session session;
MessageConsumer receiver;
String destType;
Destination dest;
boolean interrupt = false;
int max = 0, min = 1000000, totalms = 0, sent = 0, recv = 0;
public static void main(String args[]) {
String host = "localhost";
int size = 1024,
deliveryMode = DeliveryMode.NON_PERSISTENT,
sleepTime = 0;
mqping ping;
ping = new mqping();
ping.destType = new String("q");
// Process the args
for (int i = 0; i < args.length; ++i) {
if (args[i].equals("-t")) {
ping.destType = args[i+1];
i++;
if (!ping.destType.equals("q") && !ping.destType.equals("t")) {
System.err.println("Problems processing -t <dest_type>" +
" string.");
Usage();
}
} else if (args[i].equals("-r")) {
deliveryMode = DeliveryMode.PERSISTENT;
} else if (args[i].equals("-s")) {
try {
size = Integer.parseInt(args[i+1]);
if (size < 0) {
System.err.println("Value of -s <size> less than 0: ");
Usage();
}
i++;
} catch (Exception e) {
System.err.println("Problems processing -s <size> string.");
Usage();
}
} else if (args[i].equals("-i")) {
try {
sleepTime = Integer.parseInt(args[i+1]);
if (sleepTime < 0) {
System.err.println("Value of -i <delay> less than 0: ");
Usage();
}
i++;
} catch (Exception e) {
System.err.println("Problems processing -i <delay> string.");
Usage();
}
} else
Usage();
}
// Initialize the connection, session and destination.
ping.initJMS();
String address = System.getProperty("imqAddressList");
if (address != null) {
int i = address.indexOf('/');
int j = address.lastIndexOf(':');
if (j >= i+2) {
host = address.substring(i+2, j);
}
}
// Establish a shutdown hook to print ping stats.
Thread hook = new PingShutdownHook(host, ping);
try {
Runtime.getRuntime().addShutdownHook(hook);
} catch (IllegalArgumentException e) {
System.err.println("Cannot establish a shutdown hook: "
+ e.getMessage());
System.exit(1);
} catch (java.lang.IllegalStateException e) {
// Do nothing.
} catch (SecurityException e) {
System.err.println("Cannot establish a shutdown hook: "
+ e.getMessage());
System.exit(1);
}
// Ping the broker.
ping.ping(host, deliveryMode, size, sleepTime);
try {
if (ping.interrupt != true)
ping.connection.close();
} catch (JMSException e) {
System.err.println("Cannot close connection: "
+ e.getMessage());
System.exit(1);
}
}
public static void Usage () {
System.out.print(
"Usage: java mqping [-t t/q] [-r] [-s size]");
System.out.println(" [-i delay]");
System.out.print(" -t: t = send to topic, q = send to queue");
System.out.println(" Default: q");
System.out.println(
" -r: send persistent messages. Default: non-persistent");
System.out.println(
" -s: size of messages to send in bytes. Default: 1024");
System.out.print(
" -i: the interval (in seconds) between successive");
System.out.println(
" transmissions. Default: 0");
System.exit(1);
}
public mqping() {
}
private void initJMS() {
Random rand;
try {
rand = new Random(Calendar.getInstance().getTimeInMillis());
connectionFactory = new com.sun.messaging.ConnectionFactory();
connection = connectionFactory.createConnection();
// For Durable Subs we need to set the client ID but for this
// application we really don't need to use the same client ID
// from invocation to invocation.
if (destType.equals("t"))
connection.setClientID("MQPing" + rand.nextInt(1000000));
// We don't really care about the Ack mode as that is not
// part of the measurement.
session = connection.createSession(false,
Session.DUPS_OK_ACKNOWLEDGE);
if (destType.equals("q"))
dest = session.createQueue("MQPing" + rand.nextInt(1000000));
else
dest = session.createTopic("MQPing" + rand.nextInt(1000000));
connection.start();
} catch (Exception e) {
System.err.println("Problems creating JMS resources: "
+ e.getMessage());
System.exit(1);
}
}
private void ping(String host, int deliveryMode, int size, int sleepTime) {
MessageProducer sender;
TopicSubscriber sub;
Message echo;
long currentTime;
int diffms = 0;
try {
sender = session.createProducer(dest);
if (destType.equals("q"))
receiver = session.createConsumer(dest);
else {
sub = session.createDurableSubscriber((Topic)dest, "MQPing");
receiver = (MessageConsumer) sub;
}
BytesMessage msg = session.createBytesMessage();
byte[] data = new byte[size];
msg.writeBytes(data, 0, data.length);
System.out.println("PING " + host + ": " + size + " data bytes");
// Ping until we receive ^C
for (int i = 1; interrupt == false; i++) {
msg.setLongProperty("sendTime",
Calendar.getInstance().getTimeInMillis());
msg.setLongProperty("sequence", i);
synchronized(this) {
// Send and Receive the message
sender.send(msg, deliveryMode, 1, 20000);
echo = receiver.receive();
currentTime = Calendar.getInstance().getTimeInMillis();
diffms =
(int)(currentTime - echo.getLongProperty("sendTime"));
}
System.out.println(
size + " bytes from " + host +
": sequence=" + echo.getLongProperty("sequence") +
". time=" + diffms + "ms.");
// Process stats
sent++; recv++;
totalms += diffms;
if (diffms < min)
min = diffms;
if (diffms > max)
max = diffms;
if (sleepTime != 0)
sleep(sleepTime * 1000);
}
} catch (InvalidDestinationException e) {
System.err.println("Invalid Destination: " + e.getMessage());
System.exit(1);
} catch (JMSException e) {
if (interrupt != true) {
System.err.println("Error managing JMS resources: "
+ e.getMessage());
System.exit(1);
}
} catch (UnsupportedOperationException e) {
System.err.println("Destination not properly specified: "
+ e.getMessage());
System.exit(1);
} catch (Exception e) {
System.err.println("Error: "
+ e.getMessage());
e.printStackTrace();
System.exit(1);
}
}
/**
* Sleep for a specified time.
* @param time Time in milliseconds to wait.
*/
public void sleep (int time) {
try {
Thread.sleep(time);
}
catch (Exception e) {
}
}
}
/**
* A shutdown hook is called before the VM is going to exit.
* Display stats here.
*/
class PingShutdownHook extends Thread {
mqping ping;
PingShutdownHook(String host, mqping ping) {
super(host);
this.ping = ping;
}
public void run() {
int loss = 0, avg = 0;
synchronized(ping) {
ping.interrupt = true;
try {
ping.receiver.close();
// We never need to keep the durable around beyond the life of
// this application.
if (ping.destType.equals("t"))
ping.session.unsubscribe("MQPing");
ping.connection.close();
} catch (JMSException e) {
System.err.println("Cannot close JMS resources: "
+ e.getMessage());
System.exit(1);
}
}
loss = (int) (((ping.sent - ping.recv)/ping.sent) * 100);
avg = (int) (ping.totalms/ping.recv);
System.out.println("----" + getName() + " PING Statistics----");
System.out.println(ping.sent + " messages transmitted, " + ping.recv +
" messages received, " + loss + "% message loss");
System.out.println("round-trip (ms) min/avg/max = " + ping.min +
"/" + avg + "/" + ping.max);
}
}
Related examples in the same category
| 1. | This example illustrates how JMS (Java Message Service) API can be used in a Java applet |  | |
| 2. | This example illustrates how JMS can be used to create a simple chat application | | |
| 3. | The UniversalClient example is a basic 'client' application that uses the JMS 1.1 APIs | | |
| 4. | How to write a GUI application that uses a JMS QueueBrowser to browse the contents of a queue | | |
| 5. | This example is a simple JMS client application | | |
| 6. | Demonstrates a simple end-to-end "Hello World" JMS example that can be compiled and run with the Sun Java(tm) System Message Queue product | | |
| 7. | The BrokerMetrics example is a JMS application that monitors the Sun Java(tm) System Message Queue broker | | |
| 8. | The DestListMetrics example is a JMS application that monitors the destinations on a Sun Java(tm) System Message Queue broker | | |
| 9. | The DestMetrics example is a JMS application that monitors a destination on a Sun Java(tm) System Message Queue broker | | |
| 10. | The VMMetrics example is a JMS application that monitors the Java VM used by the Sun Java(tm) System Message Queue broker | | |
| 11. | MQ Cluster Monitor | | |
| 12. | The TopicSelectors class demonstrates the use of multiple subscribers and message selectors | | |
| 13. | A message will not be acknowledged until processing of it is complete | | |
| 14. | Reads a textfile, creates a BytesMessage from it, then reads the message | | |
| 15. | A durable subscription is active even when the subscriber is not active | | |
| 16. | Creates and then reads a StreamMessage and a BytesMessage | | |
| 17. | Creates and reads messages in all supported JMS message formats: BytesMessage, TextMessage, MapMessage, StreamMessage, and ObjectMessage | | |
| 18. | The use of message header fields | | |
| 19. | Demonstrates that mutable objects are copied, not passed by reference, when you use them to create message objects | | |
| 20. | A simple implementation of a request/reply message exchange | | |
| 21. | Sends several messages to a queue | | |
| 22. | Fetches one or more messages from a queue using synchronous message delivery | | |
| 23. | The simplest form of the publish/subscribe model: the producer publishes a message, and the consumer reads it using a synchronous receive | | |
| 24. | Demonstrates the use of transactions in a JMS application | | |
| 25. | Creates a Producer and a Consumer objects (Producer and Consumer classes are defined in this file) | | |
| 26. | Fetches one or more messages from a queue using asynchronous message delivery | | |
| 27. | The use of a message listener in the publish/subscribe model. The producer publishes several messages, and the consumer reads them asynchronously | | |