001 /*
002 * $RCSfile: Location.java,v $
003 *
004 * Created on April 2, 2006, 2:43 PM
005 *
006 * This file is part of the STAR Scheduler.
007 * Copyright (c) 2002-2003 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.policy;
025
026 import gov.bnl.star.offline.scheduler.catalog.*;
027 import java.net.URL;
028 import java.util.Iterator;
029 import java.util.SortedSet;
030 import java.util.StringTokenizer;
031 import java.util.TreeSet;
032
033 /** A Location is where a file can be: a node, a group of node or the NFS.
034 *
035 * @author Gabriele Carcassi & Pavel Jakl
036 * @version $Revision: 1.10 $ $Date: 2006/11/21 00:41:32 $
037 */
038 public class Location {
039 String location;
040
041 /** NFS location */
042 private Location() {
043 location = new String("NFS");
044 }
045
046 /** Creates a new instance of Location */
047 private Location(String node) {
048 location = new String(node);
049 if (location == null) location = new String("NFS");
050 if (location == "") location = new String("NFS");
051 }
052
053 public static Location getNFS() {
054 return new Location();
055 }
056
057 public static Location getNode(String node) {
058 return new Location(node);
059 }
060
061 public static Location getHPSS(){
062 return new Location("HPSS");
063 }
064 public static Location getLocation(URL url) {
065 return new Location(url.getHost());
066 }
067
068 public static Location getLocation(PhysicalFile file) {
069 if ("NFS".equals(file.getStorage())) {
070 return getNFS();}
071 if("HPSS".equals(file.getStorage())) {
072 return getHPSS();
073 }
074 return new Location(file.getNode());
075 }
076
077 public Location mergeLocations(Location loc) {
078 SortedSet set = new TreeSet();
079 StringTokenizer token = new StringTokenizer(location, ",");
080 while (token.hasMoreTokens()) {
081 set.add(token.nextToken());
082 }
083
084 token = new StringTokenizer(loc.location, ",");
085 while (token.hasMoreTokens()) {
086 set.add(token.nextToken());
087 }
088
089 String newLoc = null;
090 Iterator iter = set.iterator();
091 while (iter.hasNext()) {
092 if (newLoc == null) {
093 newLoc = (String) iter.next();
094 } else {
095 newLoc += "," + iter.next().toString();
096 }
097 }
098 return new Location(newLoc);
099 }
100
101 public String toString() {
102 return location;
103 }
104
105 public boolean equals(Object o) {
106 return location.equals(((Location) o).location);
107 }
108
109 public int hashCode() {
110 return location.hashCode();
111 }
112
113 }