/*
 * Copyright (c) 2005-2017 Benjamin Lubin
 * Copyright (c) 2005-2017 The President and Fellows of Harvard College
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * - Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 * 
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * 
 * - Neither the name of the copyright holder nor the names of its
 *   contributors may be used to endorse or promote products derived from
 *   this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package edu.harvard.econcs.jopt.solver.server;

import java.rmi.AccessException;
import java.rmi.AlreadyBoundException;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.rmi.server.UnicastRemoteObject;

import edu.harvard.econcs.jopt.solver.IMIPSolver;
import edu.harvard.econcs.jopt.solver.MIPException;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

/**
 * @author Benjamin Lubin; Last modified by $Author: blubin $
 * @version $Revision: 1.5 $ on $Date: 2010/10/28 00:11:26 $
 * @since Apr 12, 2004
 **/
public class SolverServer extends UnicastRemoteObject implements ISolverServer {
	/**
	 * 
	 */
	private static final long serialVersionUID = 3977583593201872945L;
	private static final Logger log = LogManager.getLogger(SolverServer.class);
	private Class solverClass;
	
	protected int port;
	
	/**
	 * Create a new Server
	 * @param port
	 * @param solverClass
	 */
	public static void createServer(int port, Class solverClass) throws MIPException {
		try {
			log.info("Binding server to port: " + port);
			Registry localreg = LocateRegistry.createRegistry(port);
			SolverServer server = new SolverServer(port, solverClass);
			localreg.bind(NAME, server);
		} catch (AccessException e) {
			throw new MIPException("Access", e);
		} catch (AlreadyBoundException e) {
			throw new MIPException("AlreadyBound",e);
		} catch (RemoteException e) {
			throw new MIPException("RemoteException",e);
		}
	}
	
	/**
	 * @param solverClass -- what class to use to create new instances 
	 * of the solver.
	 * @throws RemoteException
	 */
	protected SolverServer(int port, Class solverClass) throws RemoteException {
		super(port);
		this.port = port;
		this.solverClass = solverClass;
	}

	/**
	 * @see edu.harvard.econcs.jopt.solver.server.ISolverServer#getSolver()
	 */
	public IRemoteMIPSolver getSolver() throws RemoteException {
		log.info("Creating a new Solver Instance");
		IMIPSolver solver = null;
		try {
			solver = (IMIPSolver)solverClass.newInstance();
		} catch (InstantiationException | IllegalAccessException e) {
			throw new MIPException("Could not create solver intance", e);
		}
		return new RemoteMIPSolver(port, solver);
	}
}
