org.jgroups.demos.ProgrammaticChat Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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package org.jgroups.demos;

import org.jgroups.JChannel;
import org.jgroups.Message;
import org.jgroups.ReceiverAdapter;
import org.jgroups.View;
import org.jgroups.protocols.*;
import org.jgroups.protocols.pbcast.GMS;
import org.jgroups.protocols.pbcast.NAKACK2;
import org.jgroups.protocols.pbcast.STABLE;
import org.jgroups.stack.Protocol;
import org.jgroups.util.Util;

import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.Collections;

/**
 * @author Bela Ban
 */
public class ProgrammaticChat {

    public static void main(String[] args) throws Exception {
        String name=null, bind_addr=null;
        for(int i=0; i < args.length; i++) {
            if("-name".equals(args[i])) {
                name=args[++i];
                continue;
            }
            if("-bind_addr".equals(args[i])) {
                bind_addr=args[++i];
                continue;
            }
            System.out.printf("%s [-h] [-name name] [-bind_addr addr]\n", ProgrammaticChat.class.getSimpleName());
            return;
        }

        InetAddress bind_address=bind_addr != null? Util.getAddress(bind_addr, Util.getIpStackType()) : Util.getLoopback();
        Protocol[] prot_stack={
          new TCP().setBindAddress(bind_address).setBindPort(7800)
            .setDiagnosticsEnabled(true).diagEnableTcp(true).diagEnableUdp(false), // todo: remove when MulticastSocket works
          new TCPPING().initialHosts(Collections.singletonList(new InetSocketAddress(bind_address, 7800))),
          new MERGE3(),
          new FD_SOCK(),
          new FD_ALL(),
          new VERIFY_SUSPECT(),
          new NAKACK2(),
          new UNICAST3(),
          new STABLE(),
          new GMS(),
          new UFC(),
          new MFC(),
          new FRAG2()};
        JChannel ch=new JChannel(prot_stack).name(name);

        ch.setReceiver(new ReceiverAdapter() {
            public void viewAccepted(View new_view) {
                System.out.println("view: " + new_view);
            }

            public void receive(Message msg) {
                System.out.println("<< " + msg.getObject() + " [" + msg.getSrc() + "]");
            }
        });

        ch.connect("ChatCluster");


        for(;;) {
            String line=Util.readStringFromStdin(": ");
            ch.send(null, line);
        }
    }

}