1 /********************************************************************************
2 *InternetCafe is a software solution that helps the management of Cybercafes
3 * according with the ITALIAN DECREE LAW ON ANTI-TERROR MEASURES, 27 JULY 2005.
4 * Copyright (C) 2006 Guido Angelo Ingenito
5
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 *******************************************************************************/
20 package base.jdbs;
21
22 import java.io.File;
23 import java.util.Hashtable;
24 import java.util.Observable;
25
26 import org.apache.log4j.Logger;
27 import org.w3c.dom.Document;
28 import org.w3c.dom.Element;
29 import org.w3c.dom.Node;
30 import org.w3c.dom.NodeList;
31
32 import base.IXMLSaveable;
33
34 public class Repository extends Observable implements IXMLSaveable {
35
36 private static final transient Logger logger = Logger
37 .getLogger(Repository.class.getName());
38
39 /*** The repositorys' available space in Mega Bytes.* */
40 private long declaredAvailableSpace;
41
42 /*** The repositorys' physical location, a folder on the file system.* */
43 private File location;
44
45 /*** The repositorys' backup collection.* */
46 private Hashtable<String, BackupDescriptor> backup = new Hashtable<String, BackupDescriptor>();
47
48 /***
49 * This is the default constructor.
50 *
51 * @param location
52 * The location on filesytem associated to the JDBS local
53 * repository.
54 * @param declaredAvailableSpace
55 * The declared repository's available space.
56 */
57 public Repository(File location, long declaredAvailableSpace) {
58 this.location = location;
59 this.declaredAvailableSpace = declaredAvailableSpace;
60 }
61
62 /***
63 * This is the xml repository constructor.
64 *
65 * @param document
66 * The document where the repository data has been stored.
67 */
68 public Repository(Document document) {
69 NodeList nodeList = document.getElementsByTagName("Repository");
70 for (int i = 0; i < nodeList.item(0).getChildNodes().getLength(); i++) {
71 if (nodeList.item(0).getChildNodes().item(i).getNodeName().equals(
72 "Location"))
73 this.location = new File(nodeList.item(0).getChildNodes().item(
74 i).getAttributes().getNamedItem("value").getNodeValue()
75 .toString());
76 if (nodeList.item(0).getChildNodes().item(i).getNodeName().equals(
77 "DeclaredAvailableSpace"))
78 this.declaredAvailableSpace = new Integer(nodeList.item(0)
79 .getChildNodes().item(i).getAttributes().getNamedItem(
80 "value").getNodeValue().toString());
81 }
82 }
83
84 /***
85 * This method creates an index of backups building it from this
86 * repository's location.
87 */
88 public void indexRepository() {
89 this.setChanged();
90
91 this.backup.clear();
92 logger.debug("Indexing the repository: " + location);
93 if (location.exists() && location.isDirectory()) {
94 File[] artifact = location.listFiles();
95 for (int i = 0; i < artifact.length; i++) {
96 logger.debug("Item: " + artifact[i] + " isDirectory: "
97 + artifact[i].isDirectory());
98 if (artifact[i].isDirectory()) {
99 logger.debug("Found: " + artifact[i]);
100 BackupDescriptor backupDescriptor = new BackupDescriptor(
101 artifact[i]);
102 this.addBackupArtifact(backupDescriptor);
103 }
104 }
105 }
106 this.notifyObservers();
107 }
108
109 protected String createArtifactKey(BackupDescriptor backupDescriptor) {
110 return backupDescriptor.getArtifactDirectory().toString();
111 }
112
113 /***
114 * @return Returns the declaredAvailableSpace.
115 */
116 public long getDeclaredAvailableSpace() {
117 return declaredAvailableSpace;
118 }
119
120 /***
121 * @return Returns the indexed backup descriptors..
122 */
123 public BackupDescriptor[] getBackupDescriptor() {
124 return backup.values().toArray(new BackupDescriptor[0]);
125 }
126
127 /***
128 * @return Returns the location.
129 */
130 public File getLocation() {
131 return location;
132 }
133
134 private void addBackupArtifact(BackupDescriptor backupDescriptor) {
135 this.setChanged();
136 this.backup.put(createArtifactKey(backupDescriptor), backupDescriptor);
137 this.notifyObservers();
138 }
139
140
141
142
143
144
145 public Node toXml(Document document) {
146 Element repositoryElement = document.createElement("Repository");
147
148 Element locationElement = document.createElement("Location");
149 locationElement.setAttribute("value", this.location.toString());
150 repositoryElement.appendChild(locationElement);
151
152 Element availableSpaceElement = document
153 .createElement("DeclaredAvailableSpace");
154 availableSpaceElement.setAttribute("value", ""
155 + this.declaredAvailableSpace);
156 repositoryElement.appendChild(availableSpaceElement);
157
158 return repositoryElement;
159 }
160
161 /***
162 * @param declaredAvailableSpace
163 * The declaredAvailableSpace to set.
164 */
165 public void setDeclaredAvailableSpace(long declaredAvailableSpace) {
166 this.declaredAvailableSpace = declaredAvailableSpace;
167 }
168
169 /***
170 * @param location
171 * The location to set.
172 */
173 public void setLocation(File location) {
174 this.location = location;
175 }
176
177 public void removeBackupDescriptor(BackupDescriptor backupDescriptor) {
178 this.setChanged();
179 this.backup.remove(createArtifactKey(backupDescriptor));
180 this.notifyObservers();
181
182 }
183
184 /***
185 * This method retrieves a specified BackupDescriptor from a specified guId.
186 *
187 * @param guId
188 * The guId of the BackupDescriptor to retrieve.
189 * @return The BackupDescriptor whose global unique identifier is guId, null
190 * if there isn't a BackupDescriptor that matched the specified
191 * guId.
192 */
193 public BackupDescriptor getBackupDescriptorByGuId(String guId) {
194 for (int i = 0; i < this.getBackupDescriptor().length; i++) {
195 if (this.getBackupDescriptor()[i].getBackup().getGuId()
196 .equals(guId))
197 return this.getBackupDescriptor()[i];
198 }
199 return null;
200 }
201
202 }