org.jgroups.tests

Class PingPong

java.lang.Object

org.jgroups.ReceiverAdapter

org.jgroups.tests.PingPong

All Implemented Interfaces:

MembershipListener, MessageListener, Receiver

public class PingPong
extends ReceiverAdapter

Simple protocol to test round trip times. Requests are [PING], responses are [PONG]. Start multiple instances and press to get the round trip times for all nodes in the cluster

See PingPongDatagram for the same program using MulticastSockets, and LatencyTest for simple latency tests (not round trip).

Author:

Bela Ban

Constructor Summary

Constructors

Constructor and Description
PingPong()

Method Summary

Modifier and Type	Method and Description
static void	main(String[] args)
void	receive(Message msg) Called when a message is received.
void	start(String props, String name, boolean unicast)
void	viewAccepted(View new_view) Called when a change in membership has occurred.

Methods inherited from class org.jgroups.ReceiverAdapter

block, getState, setState, suspect, unblock

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PingPong

public PingPong()

Method Detail

start

public void start(String props,
                  String name,
                  boolean unicast)
           throws Exception

Throws:

Exception

viewAccepted

public void viewAccepted(View new_view)

Description copied from class: ReceiverAdapter

Called when a change in membership has occurred. No long running actions, sending of messages or anything that could block should be done in this callback. If some long running action needs to be performed, it should be done in a separate thread.

Note that on reception of the first view (a new member just joined), the channel will not yet be in the connected state. This only happens when Channel.connect(String) returns.

Specified by:

viewAccepted in interface MembershipListener

Overrides:

viewAccepted in class ReceiverAdapter

receive

public void receive(Message msg)

Description copied from class: ReceiverAdapter

Called when a message is received.

Specified by:

receive in interface MessageListener

Overrides:

receive in class ReceiverAdapter

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception