001    /*
002     * HostInfoFinder.java
003     *
004     * Created on May 12, 2003, 2:23 PM
005     *
006     * This file is part of the STAR Scheduler.
007     * Copyright (c) 2002-2006 STAR Collaboration - Brookhaven National Laboratory
008     *
009     * STAR Scheduler is free software; you can redistribute it and/or modify
010     * it under the terms of the GNU General Public License as published by
011     * the Free Software Foundation; either version 2 of the License, or
012     * (at your option) any later version.
013     *
014     * STAR Scheduler is distributed in the hope that it will be useful,
015     * but WITHOUT ANY WARRANTY; without even the implied warranty of
016     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
017     * GNU General Public License for more details.
018     *
019     * You should have received a copy of the GNU General Public License
020     * along with STAR Scheduler; if not, write to the Free Software
021     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
022     */
023    
024    package gov.bnl.star.offline.scheduler.monitor;
025    
026    import java.util.*;
027    
028    /**
029     *
030     * @author  Gabriele Carcassi
031     * @author  Efstratios Efstathiadis
032     */
033    public interface HostInfoFinder {
034        /** Returns the host information for the given hostname
035         * @param hostName the full hostname (i.e. rcas6023.rcf.bnl.gov)
036         * @return the information about the host or null if no information is available
037         */    
038        HostInfo getHostInfo(String hostName);
039        /** Returns the host information for all the hosts available. If no hosts
040         * information is available, it will return an empty collection.
041         * @return a collection of HostInfo objects
042         */    
043        Collection getHostInfo();
044        /** Returns the host information for the hostnames provided. If no host information
045         * is found, an empty collection is returned.
046         * @param hostNames a collection of Strings with the full host name (i.e. rcas6023.rcf.bnl.gov)
047         * @return a collection of HostInfo objects.
048         */    
049        Collection getHostInfo(Collection hostNames);
050    }