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A library of useful generic objects and tools consolidated here to simplify all UVM CCTS projects
There is a newer version: 1.1.5
/*
 * Copyright 2015 The University of Vermont and State
 * Agricultural College.  All rights reserved.
 *
 * Written by Matthew B. Storer 
 *
 * This file is part of CCTS Common.
 *
 * CCTS Common is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * CCTS Common is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with CCTS Common.  If not, see .
 */

package edu.uvm.ccts.common.rmi;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.rmi.Remote;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.rmi.server.RMIClientSocketFactory;
import java.rmi.server.RMIServerSocketFactory;
import java.rmi.server.UnicastRemoteObject;

/**
 * Created by mstorer on 8/8/14.
 */
public class RMIServer {
    private static final Log log = LogFactory.getLog(RMIServer.class);

    private String registryName;
    private int registryPort;
    private Remote remote;
    private RMIClientSocketFactory csf;
    private RMIServerSocketFactory ssf;


    public RMIServer(String registryName, int registryPort, Remote remote) throws Exception {
        this.registryName = registryName;
        this.registryPort = registryPort;
        this.remote = remote;
        this.csf = null;
        this.ssf = null;
    }

    public RMIServer(String registryName, int registryPort, Remote remote,
                     RMIClientSocketFactory csf, RMIServerSocketFactory ssf) throws Exception {
        this.registryName = registryName;
        this.registryPort = registryPort;
        this.remote = remote;
        this.csf = csf;
        this.ssf = ssf;
    }

    public boolean start() throws RemoteException {
        Registry registry = LocateRegistry.createRegistry(registryPort, csf, ssf);

        try {
            registry.lookup(registryName);
            return false;

        } catch (Exception e) {
            try {
                UnicastRemoteObject.unexportObject(remote, false);

            } catch (Exception e2) {
                // handle silently - was not exported to begin with
            }

            // in exportObject below, port 0 indicates a random, anonymous port
            Remote stub = UnicastRemoteObject.exportObject(remote, 0, csf, ssf);
            registry.rebind(registryName, stub);
            return true;
        }
    }

    public boolean stop() throws RemoteException {
        Registry registry;
        try {
            registry = LocateRegistry.getRegistry("localhost", registryPort, csf);

        } catch (Exception e) {
            return false;
        }

        try {
            registry.unbind(registryName);
            return true;

        } catch (Exception e) {
            return false;
        }
    }
}