/* * Title:        GridSim Toolkit * Description:  GridSim (Grid Simulation) Toolkit for Modeling and Simulation *               of Parallel and Distributed Systems such as Clusters and Grids * Licence:      GPL - http://www.gnu.org/copyleft/gpl.html */package gridsim.datagrid.index;import eduni.simjava.Sim_event;import gridsim.*;import gridsim.datagrid.*;import java.util.LinkedList;/** * A Data GridInformationService (GIS) entity that is responsible only for * storing a registration info from a Replica Catalogue (RC) entity. * This class is only used by GridSim for notifying the end of a simulation * to the registered RC entities. * Hence, users and resources communicate to a Data GIS using the * {@link gridsim.datagrid.index.DataRegionalGIS} class. * * @author  Uros Cibej and Anthony Sulistio * @since   GridSim Toolkit 4.0 * @see     gridsim.datagrid.index.DataRegionalGIS */public class DataGIS extends GridInformationService {    private LinkedList rcList_;     // list of all replica catalog entities    /**     * Allocates a new Data GIS     * @param name       the name to be associated with this entity (as     *                   required by Sim_entity class from simjava package)     * @param baud_rate  communication speed     * @throws Exception This happens when creating this entity before     *                   initializing GridSim package or this entity name is     *                   <tt>null</tt> or empty     * @see gridsim.GridSim#init(int, Calendar, boolean)     * @see gridsim.GridSim#init(int, Calendar, boolean, String[], String[],     *          String)     * @see eduni.simjava.Sim_entity     */    public DataGIS(String name, double baud_rate) throws Exception {        super(name, baud_rate);        init();    }    /**     * Allocates a new Data GIS     * @throws Exception This happens when creating this entity before     *                   initializing GridSim package     * @see gridsim.GridSim#init(int, Calendar, boolean)     * @see gridsim.GridSim#init(int, Calendar, boolean, String[], String[],     *          String)     * @see eduni.simjava.Sim_entity     */    public DataGIS() throws Exception {        this("DataGIS");    }    /**     * Allocates a new Data GIS with a default baud rate.     * @param name       the name to be associated with this entity (as     *                   required by Sim_entity class from simjava package)     * @throws Exception This happens when creating this entity before     *                   initializing GridSim package or this entity name is     *                   <tt>null</tt> or empty     * @see gridsim.GridSim#init(int, Calendar, boolean)     * @see gridsim.GridSim#init(int, Calendar, boolean, String[], String[],     *          String)     * @see eduni.simjava.Sim_entity     */    public DataGIS(String name) throws Exception {        super(name, GridSimTags.DEFAULT_BAUD_RATE);        init();    }    /**     * Initializes all private attributes     */    private void init() {        rcList_ = new LinkedList();    }    /**     * Processes an incoming request for registering a RC entity.     * @param ev  a Sim_event object (or an incoming event or request)     */    protected void processOtherEvent(Sim_event ev) {        switch (ev.get_tag()) {            // register all RC entities            case DataGridTags.REGISTER_REPLICA_CTLG:                rcList_.add( (Integer) ev.get_data() );                break;            default:                System.out.println(super.get_name() +                    ".body(): Unable to handle a request from " +                    GridSim.getEntityName(ev.get_src()) + " with event tag = " +                    ev.get_tag());                break;        }    }    /**     * Notifies the registered entities about the end of simulation.     */    protected void processEndSimulation() {        System.out.println(super.get_name() +            ": Notify all replica catalog entities for shutting down.");        super.signalShutdown(rcList_);        rcList_.clear();    }} // end class