org.nebulaframework.discovery.ws.colombus.ColombusServer.java Source code

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Here is the source code for org.nebulaframework.discovery.ws.colombus.ColombusServer.java

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/*
 * Copyright (C) 2008 Yohan Liyanage. 
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); 
 * you may not use this file except in compliance with the License. 
 * You may obtain a copy of the License at 
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
 * See the License for the specific language governing permissions and 
 * limitations under the License.
 */
package org.nebulaframework.discovery.ws.colombus;

import javax.xml.ws.Endpoint;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.nebulaframework.discovery.ws.ColombusDiscovery;
import org.nebulaframework.discovery.ws.ColombusDiscoveryImpl;
import org.nebulaframework.discovery.ws.ColombusManagerImpl;

/**
 * ColombusServer, which creates an embedded Jetty Server and
 * exposes  the {@link ColombusDiscovery} and
 * {@link ColombusManagerImpl} web services.
 * 
 * @author Yohan Liyanage
 * @version 1.0
 */
public class ColombusServer {

    private static Log log = LogFactory.getLog(ColombusServer.class);

    private static int port = 9000;

    /**
     * Execution Point of Colombus Server.
     * 
     * @param args Command Line Arguments
     */
    public static void main(String[] args) {

        // If User has given Port
        if (args.length > 0) {
            try {
                port = Integer.parseInt(args[0]);
                if (port <= 0 || port >= 65535) {
                    throw new NumberFormatException("Out of Range");
                }
            } catch (NumberFormatException e) {
                showHelp();
                System.exit(1);
            }
        }

        long t1 = System.currentTimeMillis();
        log.info("[Colombus Server] Starting Up");

        // Start Web Services
        startDiscoveryService();
        startManagerService();

        log.info("[Colombus Server] Started in " + (System.currentTimeMillis() - t1) + "ms");
    }

    /**
     * Creates the Service EndPoint for Discovery Service.
     */
    private static void startDiscoveryService() {

        ColombusDiscoveryImpl discoveryImpl = new ColombusDiscoveryImpl();
        String address = "http://localhost:" + port + "/Colombus/Discovery";
        Endpoint.publish(address, discoveryImpl);

        log.debug("[Colombus Server] Published EndPoint : " + address);
    }

    /**
     * Creates Service EndPoint for Management Service
     */
    private static void startManagerService() {

        ColombusManagerImpl managerImpl = new ColombusManagerImpl();
        String address = "http://localhost:" + port + "/Colombus/Manager";
        Endpoint.publish(address, managerImpl);

        log.debug("[Colombus Server] Published EndPoint : " + address);
    }

    /**
     * Displays a Help Message regarding starting
     * a Colombus Server.
     */
    private static void showHelp() {
        System.out.println("Colombus Server");
        System.out.println("---------------");
        System.out.println("");
        System.out.println("Colombus is the WebService based Discovery Component of Nebula Grid.");
        System.out.println("This application starts up a Colombus Web Service.");
        System.out.println("");
        System.out.println("Usage :");
        System.out.println("\tjava -jar Colombus.jar [port]");
        System.out.println("");
        System.out.println("\tport\tport number; 0 < port < 65535 (optional, default = 9000)");
    }
}