src/net/pterodactylus/jsite/core/ProjectManager.java

   1 /*
   2  * jSite2 - ProjectManager.java -
   3  * Copyright © 2008 David Roden
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 package net.pterodactylus.jsite.core;
  21
  22 import java.io.File;
  23 import java.io.FileInputStream;
  24 import java.io.FileOutputStream;
  25 import java.io.IOException;
  26 import java.io.InputStream;
  27 import java.io.OutputStream;
  28 import java.util.ArrayList;
  29 import java.util.Collections;
  30 import java.util.List;
  31 import java.util.Properties;
  32 import java.util.logging.Logger;
  33
  34 import net.pterodactylus.util.io.Closer;
  35 import net.pterodactylus.util.logging.Logging;
  36
  37 /**
  38  * Manages projects, taking care of persistence, lifetime statistics, and other
  39  * things.
  40  *
  41  * @author David ‘Bombe’ Roden &lt;bombe@freenetproject.org&gt;
  42  * @version $Id$
  43  */
  44 public class ProjectManager {
  45
  46         /** Logger. */
  47         private static final Logger logger = Logging.getLogger(ProjectManager.class.getName());
  48
  49         /** The directory the projects are stored in. */
  50         private final String directory;
  51
  52         /** The node manager. */
  53         private NodeManager nodeManager;
  54
  55         /** All projects. */
  56         private final List<Project> projects = Collections.synchronizedList(new ArrayList<Project>());
  57
  58         /**
  59          * Creates a new project manager that saves and restores its state to/from
  60          * the given directory.
  61          *
  62          * @param directory
  63          *            The directory to save and restore states to/from
  64          */
  65         public ProjectManager(String directory) {
  66                 this.directory = directory;
  67         }
  68
  69         //
  70         // ACCESSORS
  71         //
  72
  73         /**
  74          * Returns the directory the projects are loaded from and saved to.
  75          *
  76          * @return The directory for storing the projects
  77          */
  78         public String getDirectory() {
  79                 return directory;
  80         }
  81
  82         /**
  83          * Returns a list of all projects.
  84          *
  85          * @return A list of all projects
  86          */
  87         public List<Project> getProjects() {
  88                 return Collections.unmodifiableList(new ArrayList<Project>(projects));
  89         }
  90
  91         /**
  92          * Sets the node manager to use.
  93          *
  94          * @param nodeManager
  95          *            The node manager to use
  96          */
  97         public void setNodeManager(NodeManager nodeManager) {
  98                 this.nodeManager = nodeManager;
  99         }
 100
 101         //
 102         // ACTIONS
 103         //
 104
 105         /**
 106          * Loads projects and statistics.
 107          *
 108          * @throws IOException
 109          *             if an I/O error occurs
 110          */
 111         public void load() throws IOException {
 112                 File directoryFile = new File(directory);
 113                 File projectFile = new File(directoryFile, "projects.properties");
 114                 if (!projectFile.exists() || !projectFile.isFile() || !projectFile.canRead()) {
 115                         return;
 116                 }
 117                 Properties projectProperties = new Properties();
 118                 InputStream projectInputStream = null;
 119                 try {
 120                         projectInputStream = new FileInputStream(projectFile);
 121                         projectProperties.load(projectInputStream);
 122                 } finally {
 123                         Closer.close(projectInputStream);
 124                 }
 125                 int projectIndex = 0;
 126                 while (projectProperties.containsKey("projects." + projectIndex + ".name")) {
 127                         String projectPrefix = "projects." + projectIndex;
 128                         String projectName = projectProperties.getProperty(projectPrefix + ".name");
 129                         String projectDescription = projectProperties.getProperty(projectPrefix + ".description");
 130                         String projectPrivateKey = projectProperties.getProperty(projectPrefix + ".privateKey");
 131                         String projectPublicKey = projectProperties.getProperty(projectPrefix + ".publicKey");
 132                         Project project = new Project();
 133                         project.setName(projectName);
 134                         project.setDescription(projectDescription);
 135                         project.setPrivateKey(projectPrivateKey);
 136                         project.setPublicKey(projectPublicKey);
 137                         projects.add(project);
 138                         logger.fine("loaded project “" + project.getName() + "”.");
 139                         projectIndex++;
 140                 }
 141         }
 142
 143         /**
 144          * Saves projects and statistics.
 145          *
 146          * @throws IOException
 147          *             if an I/O error occurs
 148          */
 149         public void save() throws IOException {
 150                 File directoryFile = new File(directory);
 151                 if (!directoryFile.exists()) {
 152                         if (!directoryFile.mkdirs()) {
 153                                 throw new IOException("could not create directory: " + directory);
 154                         }
 155                 }
 156                 Properties projectProperties = new Properties();
 157                 int projectIndex = 0;
 158                 for (Project project: projects) {
 159                         String projectPrefix = "projects." + projectIndex;
 160                         projectProperties.setProperty(projectPrefix + ".name", project.getName());
 161                         projectProperties.setProperty(projectPrefix + ".description", project.getDescription());
 162                         projectProperties.setProperty(projectPrefix + ".privateKey", project.getPrivateKey());
 163                         projectProperties.setProperty(projectPrefix + ".publicKey", project.getPublicKey());
 164                         projectIndex++;
 165                 }
 166                 File projectFile = new File(directoryFile, "projects.properties");
 167                 OutputStream projectOutputStream = null;
 168                 try {
 169                         projectOutputStream = new FileOutputStream(projectFile);
 170                         projectProperties.store(projectOutputStream, "jSite projects");
 171                 } finally {
 172                         Closer.close(projectOutputStream);
 173                 }
 174         }
 175
 176         /**
 177          * Creates a new project. The returned {@link Project} will contain a newly
 178          * generated key pair.
 179          *
 180          * @return A newly created project
 181          * @throws IOException
 182          *             if an I/O error occured communicating with the node
 183          * @throws JSiteException
 184          *             if there is a problem with the node
 185          */
 186         public Project createProject() throws IOException, JSiteException {
 187                 Project project = new Project();
 188                 String[] keyPair = nodeManager.generateKeyPair();
 189                 project.setPrivateKey(keyPair[0]);
 190                 project.setPublicKey(keyPair[1]);
 191                 projects.add(project);
 192                 return project;
 193         }
 194 }