org.jgroups.tests.RouterStubGet Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS 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.tests;

import org.jgroups.protocols.PingData;
import org.jgroups.stack.IpAddress;
import org.jgroups.stack.RouterStub;
import org.jgroups.util.Promise;

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

/**
 * @author Bela Ban
 */
public class RouterStubGet implements RouterStub.MembersNotification {
    protected RouterStub    stub;
    protected Promise promise=new Promise<>();

    protected void start(String host, int port, String cluster_name, boolean nio) {
        try {
            InetSocketAddress local=new InetSocketAddress((InetAddress)null,0), remote=new InetSocketAddress(host,port);
            stub=new RouterStub(local, remote, nio, null, null);
            stub.connect();
            stub.getMembers(cluster_name, this);
            promise.getResult(5000);
        }
        catch(Exception ex) {
            ex.printStackTrace();
            stub.destroy();
        }
    }

    @Override
    public void members(List mbrs) {
        int cnt=1;
        for(PingData data: mbrs)
            System.out.printf("%d: %s\n", cnt++, data);
        if(stub != null)
            stub.destroy();
        promise.setResult(null);
    }


    public static void main(String[] args) {
        String host="localhost";
        int port=12001;
        String cluster_name="draw";
        boolean nio=true;

        for(int i=0; i < args.length; i++) {
            if(args[i].equals("-host")) {
                host=args[++i];
                continue;
            }
            if(args[i].equals("-port")) {
                port=Integer.parseInt(args[++i]);
                continue;
            }
            if(args[i].equals("-cluster")) {
                cluster_name=args[++i];
                continue;
            }
            if(args[i].equals("-nio")) {
                nio=Boolean.parseBoolean(args[++i]);
                continue;
            }
            help();
            return;
        }

        RouterStubGet get=new RouterStubGet();
        get.start(host, port, cluster_name, nio);
    }


    private static void help() {
        System.out.println("RouterStubGet [-host ] [-port ] [-cluster ] " +
                             "[-nio true|false]");
    }
}