bstarsrv2.java

package guide;

import org.zeromq.SocketType;
import org.zeromq.ZLoop.IZLoopHandler;
import org.zeromq.ZMsg;

//  Binary Star server, using bstar reactor
public class bstarsrv2
{
    private static final IZLoopHandler Echo = (loop, item, arg) -> {
        ZMsg msg = ZMsg.recvMsg(item.getSocket());
        msg.send(item.getSocket());
        return 0;
    };

    public static void main(String[] argv)
    {
        //  Arguments can be either of:
        //      -p  primary server, at tcp://localhost:5001
        //      -b  backup server, at tcp://localhost:5002
        bstar bs = null;

        if (argv.length == 1 && argv[0].equals("-p")) {
            System.out.print("I: Primary active, waiting for backup (passive)\n");
            bs = new bstar(true, "tcp://*:5003", "tcp://localhost:5004");
            bs.voter("tcp://*:5001", SocketType.ROUTER, Echo, null);
        }
        else if (argv.length == 1 && argv[0].equals("-b")) {
            System.out.print("I: Backup passive, waiting for primary (active)\n");
            bs = new bstar(false, "tcp://*:5004", "tcp://localhost:5003");
            bs.voter("tcp://*:5002", SocketType.ROUTER, Echo, null);
        }
        else {
            System.out.print("Usage: bstarsrv { -p | -b }\n");
            System.exit(0);
        }
        bs.start();
        bs.destroy();
    }
}