WebServer.java

package com.l2jfrozen.gameserver.powerpak.Servers;

import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.logging.Level;
import java.util.logging.Logger;

import com.l2jfrozen.Config;
import com.l2jfrozen.L2Properties;
import com.l2jfrozen.gameserver.powerpak.PowerPakConfig;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;

public class WebServer extends Thread
{
    private static WebServer _instance;

    public static WebServer getInstance()
    {
        if(_instance == null)
            _instance = new WebServer();
        return _instance;
    }

    private HttpServer _server;
    protected static final Logger _log = Logger.getLogger(WebServer.class.getName());

    private WebServer()
    {
        if(PowerPakConfig.WEBSERVER_ENABLED)
            try
            {
                int handlers = 0;
                _server = HttpServer.create(new InetSocketAddress(InetAddress.getByName(PowerPakConfig.WEBSERVER_HOST), PowerPakConfig.WEBSERVER_PORT), 10);
                L2Properties p = new L2Properties("./config/powerpak/websevices.properties");
                for(Object s : p.keySet())
                {
                    String contextHandlerName = p.getProperty(s.toString());
                    try
                    {
                        Class<?> contextHandler = Class.forName(contextHandlerName);
                        if(contextHandler != null && HttpHandler.class.isAssignableFrom(contextHandler))
                        {
                            _server.createContext(s.toString(), (HttpHandler) contextHandler.newInstance());
                            handlers++;
                        }
                    }
                    catch(Exception e)
                    {
                        if(Config.ENABLE_ALL_EXCEPTIONS)
                            e.printStackTrace();

                        _log.log(Level.WARNING, "WebServer: Error while creating handler " + contextHandlerName + " for '" + s.toString() + "': " + e);
                        continue;
                    }

                }
                if(handlers > 0)
                {
                    _server.start();
                    Runtime.getRuntime().addShutdownHook(this);
                    _log.info("WebServer: Listen at " + PowerPakConfig.WEBSERVER_HOST + ":" + PowerPakConfig.WEBSERVER_PORT);
                    _log.info("WebServer: " + handlers + " context handler(s) registred");
                }
            }
            catch(Exception e)
            {
                if(Config.ENABLE_ALL_EXCEPTIONS)
                    e.printStackTrace();

                _log.log(Level.WARNING, "WebServer: Error " + e + " while staring");
                _server = null;
            }
    }

    @Override
    public void run()
    {
        if(_server != null)
        {
            System.out.println("WebServer: stopped");
            _server.stop(0);
            _server = null;
        }
    }
}