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.net.UnknownHostException;
  24 import java.util.ArrayList;
  25 import java.util.List;
  26
  27 /**
  28  * The core of jSite.
  29  *
  30  * @author David ‘Bombe’ Roden &lt;bombe@freenetproject.org&gt;
  31  * @version $Id$
  32  */
  33 public class CoreImpl implements Core, NodeListener, RequestListener {
  34
  35         /** The core listeners. */
  36         private final List<CoreListener> coreListeners = new ArrayList<CoreListener>();
  37
  38         /** The project manager. */
  39         private ProjectManager projectManager;
  40
  41         /** The node manager. */
  42         private NodeManager nodeManager;
  43
  44         /** The request manager. */
  45         /* TODO - remove */
  46         @SuppressWarnings("unused")
  47         private RequestManager requestManager;
  48
  49         //
  50         // LISTENER MANAGEMENT
  51         //
  52
  53         /**
  54          * {@inheritDoc}
  55          */
  56         public void addCoreListener(CoreListener coreListener) {
  57                 coreListeners.add(coreListener);
  58         }
  59
  60         /**
  61          * {@inheritDoc}
  62          */
  63         public void removeCoreListener(CoreListener coreListener) {
  64                 coreListeners.remove(coreListener);
  65         }
  66
  67         /**
  68          * Notifies all listeners that the projects were loaded successfully.
  69          *
  70          * @param directory
  71          *            The directory the projects were loaded from
  72          */
  73         private void fireLoadingProjectsDone(String directory) {
  74                 for (CoreListener coreListener: coreListeners) {
  75                         coreListener.loadingProjectsDone(directory);
  76                 }
  77         }
  78
  79         /**
  80          * Notifies all core listeners that loading the projects from the given
  81          * directory has failed.
  82          *
  83          * @param directory
  84          *            The directory the projects were tried to load from
  85          * @param throwable
  86          *            The exception that occured when loading projects
  87          */
  88         private void fireLoadingProjectsFailed(String directory, Throwable throwable) {
  89                 for (CoreListener coreListener: coreListeners) {
  90                         coreListener.loadingProjectsFailed(directory, throwable);
  91                 }
  92         }
  93
  94         /**
  95          * Notifies all listeners that the projects were successfully saved.
  96          *
  97          * @param directory
  98          *            The directory the projects were saved to
  99          */
 100         private void fireSavingProjectsDone(String directory) {
 101                 for (CoreListener coreListener: coreListeners) {
 102                         coreListener.savingProjectsDone(directory);
 103                 }
 104         }
 105
 106         /**
 107          * Notifies all listeners that the projects could not be saved.
 108          *
 109          * @param directory
 110          *            The directory the projects were to be saved to
 111          * @param throwable
 112          *            The exception that occured when saving the projects
 113          */
 114         private void fireSavingProjectsFailed(String directory, Throwable throwable) {
 115                 for (CoreListener coreListener: coreListeners) {
 116                         coreListener.savingProjectsFailed(directory, throwable);
 117                 }
 118         }
 119
 120         /**
 121          * Notifies all listeners that the nodes were successfully loaded.
 122          *
 123          * @param directory
 124          *            The directory the nodes were loaded from
 125          */
 126         private void fireLoadingNodesDone(String directory) {
 127                 for (CoreListener coreListener: coreListeners) {
 128                         coreListener.loadingNodesDone(directory);
 129                 }
 130         }
 131
 132         /**
 133          * Notifies all listeners that loading the nodes has failed.
 134          *
 135          * @param directory
 136          *            The directory the nodes were loaded from
 137          * @param throwable
 138          *            The exception that occured while loading the nodes
 139          */
 140         private void fireLoadingNodesFailed(String directory, Throwable throwable) {
 141                 for (CoreListener coreListener: coreListeners) {
 142                         coreListener.loadingNodesFailed(directory, throwable);
 143                 }
 144         }
 145
 146         /**
 147          * Notifies all listeners that the nodes were saved successfully.
 148          *
 149          * @param directory
 150          *            The directory the nodes were saved to
 151          */
 152         private void fireSavingNodesDone(String directory) {
 153                 for (CoreListener coreListener: coreListeners) {
 154                         coreListener.savingNodesDone(directory);
 155                 }
 156         }
 157
 158         /**
 159          * Notifies all listeners that saving the nodes has failed.
 160          *
 161          * @param directory
 162          *            The directory the nodes were saved to
 163          * @param throwable
 164          *            The exception that occured while saving the nodes
 165          */
 166         private void fireSavingNodesFailed(String directory, Throwable throwable) {
 167                 for (CoreListener coreListener: coreListeners) {
 168                         coreListener.savingProjectsFailed(directory, throwable);
 169                 }
 170         }
 171
 172         /**
 173          * Notifies all core listeners that the core has loaded and is ready to run.
 174          */
 175         private void fireCoreLoaded() {
 176                 for (CoreListener coreListener: coreListeners) {
 177                         coreListener.coreLoaded();
 178                 }
 179         }
 180
 181         /**
 182          * Notifies all listeners that the core was stopped.
 183          */
 184         private void fireCoreStopped() {
 185                 for (CoreListener coreListener: coreListeners) {
 186                         coreListener.coreStopped();
 187                 }
 188         }
 189
 190         /**
 191          * Notifies all listeners that a node was added to the core.
 192          *
 193          * @param node
 194          *            The node that was added
 195          */
 196         private void fireNodeAdded(Node node) {
 197                 for (CoreListener coreListener: coreListeners) {
 198                         coreListener.nodeAdded(node);
 199                 }
 200         }
 201
 202         /**
 203          * Notifies all listeners that a node was removed from the core.
 204          *
 205          * @param node
 206          *            The node that was removed
 207          */
 208         private void fireNodeRemoved(Node node) {
 209                 for (CoreListener coreListener: coreListeners) {
 210                         coreListener.nodeRemoved(node);
 211                 }
 212         }
 213
 214         /**
 215          * Notifies all listeners that a connection to the given node is now being
 216          * established.
 217          *
 218          * @param node
 219          *            The node that is being connected to
 220          */
 221         private void fireNodeConnecting(Node node) {
 222                 for (CoreListener coreListener: coreListeners) {
 223                         coreListener.nodeConnecting(node);
 224                 }
 225         }
 226
 227         /**
 228          * Notifies all listeners that the given node is now connected.
 229          *
 230          * @param node
 231          *            The node that is now connected
 232          */
 233         private void fireNodeConnected(Node node) {
 234                 for (CoreListener coreListener: coreListeners) {
 235                         coreListener.nodeConnected(node);
 236                 }
 237         }
 238
 239         /**
 240          * Notifies all listeners that a connection to a node has failed.
 241          *
 242          * @param node
 243          *            The node that could not be connected
 244          * @param cause
 245          *            The cause of the failure
 246          */
 247         private void fireNodeConnectionFailed(Node node, Throwable cause) {
 248                 for (CoreListener coreListener: coreListeners) {
 249                         coreListener.nodeConnectionFailed(node, cause);
 250                 }
 251         }
 252
 253         /**
 254          * Notifies all listeners that the given node was disconnected.
 255          *
 256          * @param node
 257          *            The node that is now disconnected
 258          * @param throwable
 259          *            The exception that caused the disconnect, or <code>null</code>
 260          *            if there was no exception
 261          */
 262         private void fireNodeDisconnected(Node node, Throwable throwable) {
 263                 for (CoreListener coreListener: coreListeners) {
 264                         coreListener.nodeDisconnected(node, throwable);
 265                 }
 266         }
 267
 268         /**
 269          * Notifies all listeners that a request was added to a node.
 270          *
 271          * @param request
 272          *            The request that was added
 273          */
 274         private void fireRequestAdded(Request request) {
 275                 for (CoreListener coreListener: coreListeners) {
 276                         coreListener.requestAdded(request);
 277                 }
 278         }
 279
 280         /**
 281          * Notifies all listeners that a request progressed.
 282          *
 283          * @param request
 284          *            The request
 285          */
 286         private void fireRequestProgressed(Request request) {
 287                 for (CoreListener coreListener: coreListeners) {
 288                         coreListener.requestProgressed(request);
 289                 }
 290         }
 291
 292         /**
 293          * Notifies all listeners that a request was removed.
 294          *
 295          * @param request
 296          *            The request that was removed
 297          */
 298         private void fireRequestRemoved(Request request) {
 299                 for (CoreListener coreListener: coreListeners) {
 300                         coreListener.requestRemoved(request);
 301                 }
 302         }
 303
 304         //
 305         // ACCESSORS
 306         //
 307
 308         /**
 309          * Returns the project manager.
 310          *
 311          * @return The project manager
 312          */
 313         public ProjectManager getProjectManager() {
 314                 return projectManager;
 315         }
 316
 317         /**
 318          * Sets the project manager to use.
 319          *
 320          * @param projectManager
 321          *            The project manager to use
 322          */
 323         public void setProjectManager(ProjectManager projectManager) {
 324                 this.projectManager = projectManager;
 325         }
 326
 327         /**
 328          * Returns the node manager.
 329          *
 330          * @return The node manager
 331          */
 332         public NodeManager getNodeManager() {
 333                 return nodeManager;
 334         }
 335
 336         /**
 337          * Sets the node manager to use.
 338          *
 339          * @param nodeManager
 340          *            The node manager to use
 341          */
 342         public void setNodeManager(NodeManager nodeManager) {
 343                 this.nodeManager = nodeManager;
 344         }
 345
 346         /**
 347          * Sets the request manager to use.
 348          *
 349          * @param requestManager
 350          *            The request manager to use
 351          */
 352         public void setRequestManager(RequestManager requestManager) {
 353                 this.requestManager = requestManager;
 354         }
 355
 356         /**
 357          * {@inheritDoc}
 358          */
 359         public List<Node> getNodes() {
 360                 return nodeManager.getNodes();
 361         }
 362
 363         /**
 364          * {@inheritDoc}
 365          */
 366         public boolean isNodeConnected(Node node) {
 367                 return nodeManager.hasNode(node);
 368         }
 369
 370         /**
 371          * {@inheritDoc}
 372          */
 373         public List<Project> getProjects() {
 374                 return projectManager.getProjects();
 375         }
 376
 377         //
 378         // ACTIONS
 379         //
 380
 381         /**
 382          * {@inheritDoc}
 383          */
 384         public void start() {
 385                 try {
 386                         projectManager.load();
 387                         fireLoadingProjectsDone(projectManager.getDirectory());
 388                 } catch (IOException ioe1) {
 389                         fireLoadingProjectsFailed(projectManager.getDirectory(), ioe1);
 390                 }
 391                 try {
 392                         nodeManager.load();
 393                         fireLoadingNodesDone(nodeManager.getDirectory());
 394                 } catch (IOException ioe1) {
 395                         fireLoadingNodesFailed(nodeManager.getDirectory(), ioe1);
 396                 }
 397                 fireCoreLoaded();
 398         }
 399
 400         /**
 401          * {@inheritDoc}
 402          */
 403         public void stop() {
 404                 try {
 405                         projectManager.save();
 406                         fireSavingProjectsDone(projectManager.getDirectory());
 407                 } catch (IOException ioe1) {
 408                         fireSavingProjectsFailed(projectManager.getDirectory(), ioe1);
 409                 }
 410                 try {
 411                         nodeManager.save();
 412                         fireSavingNodesDone(nodeManager.getDirectory());
 413                 } catch (IOException ioe1) {
 414                         fireSavingNodesFailed(nodeManager.getDirectory(), ioe1);
 415                 }
 416                 fireCoreStopped();
 417         }
 418
 419         /**
 420          * {@inheritDoc}
 421          */
 422         public boolean addNode(Node node) throws UnknownHostException {
 423                 return nodeManager.addNode(node);
 424         }
 425
 426         /**
 427          * {@inheritDoc}
 428          */
 429         public void removeNode(Node node) {
 430                 nodeManager.removeNode(node);
 431         }
 432
 433         /**
 434          * {@inheritDoc}
 435          */
 436         public void connectToNode(Node node) {
 437                 fireNodeConnecting(node);
 438                 nodeManager.connect(node);
 439         }
 440
 441         /**
 442          * {@inheritDoc}
 443          */
 444         public void disconnectFromNode(Node node) {
 445                 nodeManager.disconnect(node);
 446         }
 447
 448         /**
 449          * {@inheritDoc}
 450          */
 451         public Project createProject() throws IOException, NoNodeException {
 452                 return projectManager.createProject();
 453         }
 454
 455         //
 456         // PRIVATE METHODS
 457         //
 458
 459         /**
 460          * Loads the configuration.
 461          */
 462         @SuppressWarnings("unused")
 463         private void loadConfig() {
 464                 /* TODO */
 465         }
 466
 467         /**
 468          * Saves the configuration.
 469          */
 470         @SuppressWarnings("unused")
 471         private void saveConfig() {
 472                 /* TODO */
 473         }
 474
 475         //
 476         // INTERFACE NodeListener
 477         //
 478
 479         /**
 480          * {@inheritDoc}
 481          */
 482         public void nodeAdded(Node node) {
 483                 fireNodeAdded(node);
 484         }
 485
 486         /**
 487          * {@inheritDoc}
 488          */
 489         public void nodeRemoved(Node node) {
 490                 fireNodeRemoved(node);
 491         }
 492
 493         /**
 494          * {@inheritDoc}
 495          */
 496         public void nodeConnected(Node node) {
 497                 fireNodeConnected(node);
 498         }
 499
 500         /**
 501          * {@inheritDoc}
 502          */
 503         public void nodeConnectionFailed(Node node, Throwable cause) {
 504                 fireNodeConnectionFailed(node, cause);
 505         }
 506
 507         /**
 508          * {@inheritDoc}
 509          */
 510         public void nodeDisconnected(Node node, Throwable throwable) {
 511                 fireNodeDisconnected(node, throwable);
 512         }
 513
 514         //
 515         // INTERFACE RequestListener
 516         //
 517
 518         /**
 519          * {@inheritDoc}
 520          */
 521         public void requestAdded(Request request) {
 522                 fireRequestAdded(request);
 523         }
 524
 525         /**
 526          * @see net.pterodactylus.jsite.core.RequestListener#requestProgressed(Request)
 527          */
 528         public void requestProgressed(Request request) {
 529                 fireRequestProgressed(request);
 530         }
 531
 532         /**
 533          * @see net.pterodactylus.jsite.core.RequestListener#requestRemoved(net.pterodactylus.jsite.core.Request)
 534          */
 535         public void requestRemoved(Request request) {
 536                 fireRequestRemoved(request);
 537         }
 538
 539 }