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 the given node was disconnected.
 241          *
 242          * @param node
 243          *            The node that is now disconnected
 244          * @param throwable
 245          *            The exception that caused the disconnect, or <code>null</code>
 246          *            if there was no exception
 247          */
 248         private void fireNodeDisconnected(Node node, Throwable throwable) {
 249                 for (CoreListener coreListener: coreListeners) {
 250                         coreListener.nodeDisconnected(node, throwable);
 251                 }
 252         }
 253
 254         /**
 255          * Notifies all listeners that a request was added to a node.
 256          *
 257          * @param node
 258          *            The node the request was added to
 259          * @param request
 260          *            The request that was added
 261          */
 262         private void fireRequestAdded(Node node, Request request) {
 263                 for (CoreListener coreListener: coreListeners) {
 264                         coreListener.requestAdded(node, request);
 265                 }
 266         }
 267
 268         /**
 269          * Notifies all listeners that a request progressed.
 270          *
 271          * @param node
 272          *            The node that runs the request
 273          * @param request
 274          *            The request
 275          * @param totalBlocks
 276          *            The total number of blocks
 277          * @param requiredBlocks
 278          *            The number of required blocks
 279          * @param successfulBlocks
 280          *            The number of successful blocks
 281          * @param failedBlocks
 282          *            The number of failed blocks
 283          * @param fatallyFailedBlocks
 284          *            The number of fatally failed blocks
 285          * @param finalizedTotal
 286          *            <code>true</code> if the total number of blocks in final,
 287          *            <code>false</code> otherwise
 288          */
 289         private void fireRequestProgressed(Node node, Request request, int totalBlocks, int requiredBlocks, int successfulBlocks, int failedBlocks, int fatallyFailedBlocks, boolean finalizedTotal) {
 290                 for (CoreListener coreListener: coreListeners) {
 291                         coreListener.requestProgressed(request, totalBlocks, requiredBlocks, successfulBlocks, failedBlocks, fatallyFailedBlocks, finalizedTotal);
 292                 }
 293         }
 294
 295         //
 296         // ACCESSORS
 297         //
 298
 299         /**
 300          * Returns the project manager.
 301          *
 302          * @return The project manager
 303          */
 304         public ProjectManager getProjectManager() {
 305                 return projectManager;
 306         }
 307
 308         /**
 309          * Sets the project manager to use.
 310          *
 311          * @param projectManager
 312          *            The project manager to use
 313          */
 314         public void setProjectManager(ProjectManager projectManager) {
 315                 this.projectManager = projectManager;
 316         }
 317
 318         /**
 319          * Returns the node manager.
 320          *
 321          * @return The node manager
 322          */
 323         public NodeManager getNodeManager() {
 324                 return nodeManager;
 325         }
 326
 327         /**
 328          * Sets the node manager to use.
 329          *
 330          * @param nodeManager
 331          *            The node manager to use
 332          */
 333         public void setNodeManager(NodeManager nodeManager) {
 334                 this.nodeManager = nodeManager;
 335         }
 336
 337         /**
 338          * Sets the request manager to use.
 339          *
 340          * @param requestManager
 341          *            The request manager to use
 342          */
 343         public void setRequestManager(RequestManager requestManager) {
 344                 this.requestManager = requestManager;
 345         }
 346
 347         /**
 348          * {@inheritDoc}
 349          */
 350         public List<Node> getNodes() {
 351                 return nodeManager.getNodes();
 352         }
 353
 354         /**
 355          * {@inheritDoc}
 356          */
 357         public boolean isNodeConnected(Node node) {
 358                 return nodeManager.hasNode(node);
 359         }
 360
 361         //
 362         // ACTIONS
 363         //
 364
 365         /**
 366          * {@inheritDoc}
 367          */
 368         public void start() {
 369                 try {
 370                         projectManager.load();
 371                         fireLoadingProjectsDone(projectManager.getDirectory());
 372                 } catch (IOException ioe1) {
 373                         fireLoadingProjectsFailed(projectManager.getDirectory(), ioe1);
 374                 }
 375                 try {
 376                         nodeManager.load();
 377                         fireLoadingNodesDone(nodeManager.getDirectory());
 378                 } catch (IOException ioe1) {
 379                         fireLoadingNodesFailed(nodeManager.getDirectory(), ioe1);
 380                 }
 381                 fireCoreLoaded();
 382         }
 383
 384         /**
 385          * {@inheritDoc}
 386          */
 387         public void stop() {
 388                 try {
 389                         projectManager.save();
 390                         fireSavingProjectsDone(projectManager.getDirectory());
 391                 } catch (IOException ioe1) {
 392                         fireSavingProjectsFailed(projectManager.getDirectory(), ioe1);
 393                 }
 394                 try {
 395                         nodeManager.save();
 396                         fireSavingNodesDone(nodeManager.getDirectory());
 397                 } catch (IOException ioe1) {
 398                         fireSavingNodesFailed(nodeManager.getDirectory(), ioe1);
 399                 }
 400                 fireCoreStopped();
 401         }
 402
 403         /**
 404          * {@inheritDoc}
 405          */
 406         public void addNode(Node node) throws UnknownHostException {
 407                 nodeManager.addNode(node);
 408                 fireNodeAdded(node);
 409         }
 410
 411         /**
 412          * {@inheritDoc}
 413          */
 414         public void removeNode(Node node) {
 415                 nodeManager.removeNode(node);
 416                 fireNodeRemoved(node);
 417         }
 418
 419         /**
 420          * {@inheritDoc}
 421          */
 422         public void connectToNode(Node node) {
 423                 fireNodeConnecting(node);
 424                 nodeManager.connect(node);
 425         }
 426
 427         /**
 428          * {@inheritDoc}
 429          */
 430         public void disconnectFromNode(Node node) {
 431                 nodeManager.disconnect(node);
 432         }
 433
 434         //
 435         // PRIVATE METHODS
 436         //
 437
 438         /**
 439          * Loads the configuration.
 440          */
 441         @SuppressWarnings("unused")
 442         private void loadConfig() {
 443                 /* TODO */
 444         }
 445
 446         /**
 447          * Saves the configuration.
 448          */
 449         @SuppressWarnings("unused")
 450         private void saveConfig() {
 451                 /* TODO */
 452         }
 453
 454         //
 455         // INTERFACE NodeListener
 456         //
 457
 458         /**
 459          * {@inheritDoc}
 460          */
 461         public void nodeAdded(Node node) {
 462                 fireNodeAdded(node);
 463         }
 464
 465         /**
 466          * {@inheritDoc}
 467          */
 468         public void nodeRemoved(Node node) {
 469                 fireNodeRemoved(node);
 470         }
 471
 472         /**
 473          * {@inheritDoc}
 474          */
 475         public void nodeConnected(Node node) {
 476                 fireNodeConnected(node);
 477         }
 478
 479         /**
 480          * {@inheritDoc}
 481          */
 482         public void nodeDisconnected(Node node, Throwable throwable) {
 483                 fireNodeDisconnected(node, throwable);
 484         }
 485
 486         //
 487         // INTERFACE RequestListener
 488         //
 489
 490         /**
 491          * {@inheritDoc}
 492          */
 493         public void requestAdded(Node node, Request request) {
 494                 fireRequestAdded(node, request);
 495         }
 496
 497         /**
 498          * @see net.pterodactylus.jsite.core.RequestListener#requestProgressed(net.pterodactylus.jsite.core.Node,
 499          *      net.pterodactylus.jsite.core.Request, int, int, int, int, int,
 500          *      boolean)
 501          */
 502         public void requestProgressed(Node node, Request request, int totalBlocks, int requiredBlocks, int successfulBlocks, int failedBlocks, int fatallyFailedBlocks, boolean finalizedTotal) {
 503         fireRequestProgressed(node, request, totalBlocks, requiredBlocks, successfulBlocks, failedBlocks, fatallyFailedBlocks, finalizedTotal);
 504     }
 505 }