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

   1 /*
   2  * jSite2 - Core.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.IOException;
  23 import java.util.ArrayList;
  24 import java.util.List;
  25
  26 /**
  27  * The core of jSite.
  28  *
  29  * @author David ‘Bombe’ Roden &lt;bombe@freenetproject.org&gt;
  30  * @version $Id$
  31  */
  32 public class CoreImpl implements Core, NodeListener, RequestListener {
  33
  34         /** The core listeners. */
  35         private final List<CoreListener> coreListeners = new ArrayList<CoreListener>();
  36
  37         /** The project manager. */
  38         private ProjectManager projectManager;
  39
  40         /** The node manager. */
  41         private NodeManager nodeManager;
  42
  43         /** The request manager. */
  44         /* TODO - remove */
  45         @SuppressWarnings("unused")
  46         private RequestManager requestManager;
  47
  48         //
  49         // LISTENER MANAGEMENT
  50         //
  51
  52         /**
  53          * {@inheritDoc}
  54          */
  55         public void addCoreListener(CoreListener coreListener) {
  56                 coreListeners.add(coreListener);
  57         }
  58
  59         /**
  60          * {@inheritDoc}
  61          */
  62         public void removeCoreListener(CoreListener coreListener) {
  63                 coreListeners.remove(coreListener);
  64         }
  65
  66         /**
  67          * Notifies all listeners that the projects were loaded successfully.
  68          *
  69          * @param directory
  70          *            The directory the projects were loaded from
  71          */
  72         private void fireLoadingProjectsDone(String directory) {
  73                 for (CoreListener coreListener: coreListeners) {
  74                         coreListener.loadingProjectsDone(directory);
  75                 }
  76         }
  77
  78         /**
  79          * Notifies all core listeners that loading the projects from the given
  80          * directory has failed.
  81          *
  82          * @param directory
  83          *            The directory the projects were tried to load from
  84          * @param throwable
  85          *            The exception that occured when loading projects
  86          */
  87         private void fireLoadingProjectsFailed(String directory, Throwable throwable) {
  88                 for (CoreListener coreListener: coreListeners) {
  89                         coreListener.loadingProjectsFailed(directory, throwable);
  90                 }
  91         }
  92
  93         /**
  94          * Notifies all listeners that the projects were successfully saved.
  95          *
  96          * @param directory
  97          *            The directory the projects were saved to
  98          */
  99         private void fireSavingProjectsDone(String directory) {
 100                 for (CoreListener coreListener: coreListeners) {
 101                         coreListener.savingProjectsDone(directory);
 102                 }
 103         }
 104
 105         /**
 106          * Notifies all listeners that the projects could not be saved.
 107          *
 108          * @param directory
 109          *            The directory the projects were to be saved to
 110          * @param throwable
 111          *            The exception that occured when saving the projects
 112          */
 113         private void fireSavingProjectsFailed(String directory, Throwable throwable) {
 114                 for (CoreListener coreListener: coreListeners) {
 115                         coreListener.savingProjectsFailed(directory, throwable);
 116                 }
 117         }
 118
 119         /**
 120          * Notifies all listeners that the nodes were successfully loaded.
 121          *
 122          * @param directory
 123          *            The directory the nodes were loaded from
 124          */
 125         private void fireLoadingNodesDone(String directory) {
 126                 for (CoreListener coreListener: coreListeners) {
 127                         coreListener.loadingNodesDone(directory);
 128                 }
 129         }
 130
 131         /**
 132          * Notifies all listeners that loading the nodes has failed.
 133          *
 134          * @param directory
 135          *            The directory the nodes were loaded from
 136          * @param throwable
 137          *            The exception that occured while loading the nodes
 138          */
 139         private void fireLoadingNodesFailed(String directory, Throwable throwable) {
 140                 for (CoreListener coreListener: coreListeners) {
 141                         coreListener.loadingNodesFailed(directory, throwable);
 142                 }
 143         }
 144
 145         /**
 146          * Notifies all listeners that the nodes were saved successfully.
 147          *
 148          * @param directory
 149          *            The directory the nodes were saved to
 150          */
 151         private void fireSavingNodesDone(String directory) {
 152                 for (CoreListener coreListener: coreListeners) {
 153                         coreListener.savingNodesDone(directory);
 154                 }
 155         }
 156
 157         /**
 158          * Notifies all listeners that saving the nodes has failed.
 159          *
 160          * @param directory
 161          *            The directory the nodes were saved to
 162          * @param throwable
 163          *            The exception that occured while saving the nodes
 164          */
 165         private void fireSavingNodesFailed(String directory, Throwable throwable) {
 166                 for (CoreListener coreListener: coreListeners) {
 167                         coreListener.savingProjectsFailed(directory, throwable);
 168                 }
 169         }
 170
 171         /**
 172          * Notifies all core listeners that the core has loaded and is ready to run.
 173          */
 174         private void fireCoreLoaded() {
 175                 for (CoreListener coreListener: coreListeners) {
 176                         coreListener.coreLoaded();
 177                 }
 178         }
 179
 180         /**
 181          * Notifies all listeners that the core was stopped.
 182          */
 183         private void fireCoreStopped() {
 184                 for (CoreListener coreListener: coreListeners) {
 185                         coreListener.coreStopped();
 186                 }
 187         }
 188
 189         /**
 190          * Notifies all listeners that a connection to the given node is now being
 191          * established.
 192          *
 193          * @param node
 194          *            The node that is being connected to
 195          */
 196         private void fireNodeConnecting(Node node) {
 197                 for (CoreListener coreListener: coreListeners) {
 198                         coreListener.nodeConnecting(node);
 199                 }
 200         }
 201
 202         /**
 203          * Notifies all listeners that the given node is now connected.
 204          *
 205          * @param node
 206          *            The node that is now connected
 207          */
 208         private void fireNodeConnected(Node node) {
 209                 for (CoreListener coreListener: coreListeners) {
 210                         coreListener.nodeConnected(node);
 211                 }
 212         }
 213
 214         /**
 215          * Notifies all listeners that the given node was disconnected.
 216          *
 217          * @param node
 218          *            The node that is now disconnected
 219          * @param throwable
 220          *            The exception that caused the disconnect, or <code>null</code>
 221          *            if there was no exception
 222          */
 223         private void fireNodeDisconnected(Node node, Throwable throwable) {
 224                 for (CoreListener coreListener: coreListeners) {
 225                         coreListener.nodeDisconnected(node, throwable);
 226                 }
 227         }
 228
 229         /**
 230          * Notifies all listeners that a request was added to a node.
 231          *
 232          * @param node
 233          *            The node the request was added to
 234          * @param request
 235          *            The request that was added
 236          */
 237         private void fireRequestAdded(Node node, Request request) {
 238                 for (CoreListener coreListener: coreListeners) {
 239                         coreListener.requestAdded(node, request);
 240                 }
 241         }
 242
 243         //
 244         // ACCESSORS
 245         //
 246
 247         /**
 248          * Returns the project manager.
 249          *
 250          * @return The project manager
 251          */
 252         public ProjectManager getProjectManager() {
 253                 return projectManager;
 254         }
 255
 256         /**
 257          * Sets the project manager to use.
 258          *
 259          * @param projectManager
 260          *            The project manager to use
 261          */
 262         public void setProjectManager(ProjectManager projectManager) {
 263                 this.projectManager = projectManager;
 264         }
 265
 266         /**
 267          * Returns the node manager.
 268          *
 269          * @return The node manager
 270          */
 271         public NodeManager getNodeManager() {
 272                 return nodeManager;
 273         }
 274
 275         /**
 276          * Sets the node manager to use.
 277          *
 278          * @param nodeManager
 279          *            The node manager to use
 280          */
 281         public void setNodeManager(NodeManager nodeManager) {
 282                 this.nodeManager = nodeManager;
 283         }
 284
 285         /**
 286          * Sets the request manager to use.
 287          *
 288          * @param requestManager
 289          *            The request manager to use
 290          */
 291         public void setRequestManager(RequestManager requestManager) {
 292                 this.requestManager = requestManager;
 293         }
 294
 295         /**
 296          * {@inheritDoc}
 297          */
 298         public List<Node> getNodes() {
 299                 return nodeManager.getNodes();
 300         }
 301
 302         /**
 303          * {@inheritDoc}
 304          */
 305         public boolean isNodeConnected(Node node) {
 306                 return nodeManager.hasNode(node);
 307         }
 308
 309         //
 310         // ACTIONS
 311         //
 312
 313         /**
 314          * {@inheritDoc}
 315          */
 316         public void start() {
 317                 try {
 318                         projectManager.load();
 319                         fireLoadingProjectsDone(projectManager.getDirectory());
 320                 } catch (IOException ioe1) {
 321                         fireLoadingProjectsFailed(projectManager.getDirectory(), ioe1);
 322                 }
 323                 try {
 324                         nodeManager.load();
 325                         fireLoadingNodesDone(nodeManager.getDirectory());
 326                 } catch (IOException ioe1) {
 327                         fireLoadingNodesFailed(nodeManager.getDirectory(), ioe1);
 328                 }
 329                 fireCoreLoaded();
 330         }
 331
 332         /**
 333          * {@inheritDoc}
 334          */
 335         public void stop() {
 336                 try {
 337                         projectManager.save();
 338                         fireSavingProjectsDone(projectManager.getDirectory());
 339                 } catch (IOException ioe1) {
 340                         fireSavingProjectsFailed(projectManager.getDirectory(), ioe1);
 341                 }
 342                 try {
 343                         nodeManager.save();
 344                         fireSavingNodesDone(nodeManager.getDirectory());
 345                 } catch (IOException ioe1) {
 346                         fireSavingNodesFailed(nodeManager.getDirectory(), ioe1);
 347                 }
 348                 fireCoreStopped();
 349         }
 350
 351         /**
 352          * {@inheritDoc}
 353          */
 354         public void connectToNode(Node node) {
 355                 fireNodeConnecting(node);
 356                 nodeManager.addNode(node);
 357                 nodeManager.connect(node);
 358         }
 359
 360         /**
 361          * {@inheritDoc}
 362          */
 363         public void disconnectFromNode(Node node) {
 364                 nodeManager.disconnect(node);
 365         }
 366
 367         //
 368         // PRIVATE METHODS
 369         //
 370
 371         /**
 372          * Loads the configuration.
 373          */
 374         @SuppressWarnings("unused")
 375         private void loadConfig() {
 376                 /* TODO */
 377         }
 378
 379         /**
 380          * Saves the configuration.
 381          */
 382         @SuppressWarnings("unused")
 383         private void saveConfig() {
 384                 /* TODO */
 385         }
 386
 387         //
 388         // INTERFACE NodeListener
 389         //
 390
 391         /**
 392          * {@inheritDoc}
 393          */
 394         public void nodeConnected(Node node) {
 395                 fireNodeConnected(node);
 396         }
 397
 398         /**
 399          * {@inheritDoc}
 400          */
 401         public void nodeDisconnected(Node node, Throwable throwable) {
 402                 fireNodeDisconnected(node, throwable);
 403         }
 404
 405         //
 406         // INTERFACE RequestListener
 407         //
 408
 409         /**
 410          * {@inheritDoc}
 411          */
 412         public void requestAdded(Node node, Request request) {
 413                 fireRequestAdded(node, request);
 414         }
 415
 416 }