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Cristal-ise is a description-driven software platform originally developed to track the construction of the CMS ECAL detector of the LHC at CERN. This is its core library, known as the kernel, which manages business objects called Items. Items are entirely configured from data, called descriptions, held in other Items. Every change of a state in an Item is a consequence of an execution of an activity in that Item's lifecycle, meaning that Cristal-ise applications are completely traceable, even in their design. It also supports extensive versioning of Item description data, giving the system a high level of flexibility.

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/**
 * This file is part of the CRISTAL-iSE kernel.
 * Copyright (c) 2001-2015 The CRISTAL Consortium. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation; either version 3 of the License, or (at
 * your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; with out even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
 *
 * http://www.fsf.org/licensing/licenses/lgpl.html
 */
package org.cristalise.kernel.process;

import java.util.Iterator;
import java.util.Properties;

import org.cristalise.kernel.common.CannotManageException;
import org.cristalise.kernel.common.ObjectCannotBeUpdated;
import org.cristalise.kernel.common.ObjectNotFoundException;
import org.cristalise.kernel.lookup.AgentPath;
import org.cristalise.kernel.lookup.DomainPath;
import org.cristalise.kernel.lookup.Path;
import org.cristalise.kernel.lookup.RolePath;
import org.cristalise.kernel.process.resource.ResourceLoader;
import org.cristalise.kernel.utils.Logger;

/**
 * Base class for all servers i.e. c2k processes that serve Entities
 */
public class StandardServer extends AbstractMain {
    protected static StandardServer server;

    public static void resetItemIORs(DomainPath root) throws ObjectNotFoundException, ObjectCannotBeUpdated, CannotManageException {
        Logger.msg("StandardServer.resetItemIORs() - root:"+root);

        Iterator pathes = Gateway.getLookup().getChildren(root);

        while (pathes.hasNext()) {
            DomainPath domain = (DomainPath) pathes.next();

            if (domain.isContext()) {
                resetItemIORs(domain);
            }
            else {
                Logger.msg("StandardServer.resetItemIORs() - setting IOR for domain:" + domain + " item:" + domain.getItemPath());

                Gateway.getLookupManager().setIOR(
                        domain.getItemPath(),
                        Gateway.getORB().object_to_string(Gateway.getCorbaServer().getItemIOR(domain.getItemPath())));
            }
        }
    }

    public static void resetAgentIORs(RolePath root) throws ObjectNotFoundException, ObjectCannotBeUpdated, CannotManageException {
        Logger.msg("StandardServer.resetAgentIORs() - root:"+root);

        Iterator roles = Gateway.getLookup().getChildren(root);

        while (roles.hasNext()) {
            RolePath role = (RolePath) roles.next();

            resetAgentIORs(role);

            for (AgentPath agent :  Gateway.getLookup().getAgents(role)) {
                Logger.msg("StandardServer.resetAgentIORs() - setting IOR for role:" + role + " agent:" + agent.getAgentName() + " " + agent.getItemPath());

                Gateway.getLookupManager().setIOR(
                        agent.getItemPath(),
                        Gateway.getORB().object_to_string(Gateway.getCorbaServer().getAgentIOR(agent)));
            }
        }
    }

    /**
     * Initialise the server
     * 
     * @param props initiliased Properties
     * @param res the instantiated ResourceLoader
     * @throws Exception throw whatever happens
     */
    public static void standardInitialisation(Properties props, ResourceLoader res) throws Exception {
        isServer = true;

        // read args and init Gateway
        Gateway.init(props, res);

        // connect to LDAP as root
        Gateway.connect();

        //start console
        Logger.initConsole("ItemServer");

        //initialize the server objects
        Gateway.startServer();

        if (Gateway.getProperties().containsKey(AbstractMain.MAIN_ARG_RESETIOR)) {
            Logger.msg(5, "StandardServer.standardInitialisation() - RESETTING IORs");

            resetItemIORs(new DomainPath(""));
            resetAgentIORs(new RolePath());

            AbstractMain.shutdown(0);
        }
        else {
            //start checking bootstrap & module items
            Bootstrap.run();
        }

        Logger.msg(5, "StandardServer.standardInitialisation() - complete.");
    }

    /**
     * Initialise the server
     * 
     * @param args command line parameters
     * @throws Exception throw whatever happens
     */
    public static void standardInitialisation(String[] args) throws Exception {
        standardInitialisation(readC2KArgs(args), null);
    }

    /**
     * Main to launch a Standard Server process
     * 
     * @param args command line parameters
     * @throws Exception  throw whatever happens
     */
    public static void main(String[] args) throws Exception {
        //initialise everything
        standardInitialisation( args );

        Runtime.getRuntime().addShutdownHook(new Thread() {
            @Override
            public void run() {
                AbstractMain.shutdown(0);
            }
        });
    }
}