src/main/java/net/pterodactylus/sone/core/Core.java

   1 /*
   2  * Sone - Core.java - Copyright © 2010 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.sone.core;
  19
  20 import java.net.MalformedURLException;
  21 import java.util.ArrayList;
  22 import java.util.Collections;
  23 import java.util.HashMap;
  24 import java.util.HashSet;
  25 import java.util.List;
  26 import java.util.Map;
  27 import java.util.Set;
  28 import java.util.logging.Level;
  29 import java.util.logging.Logger;
  30
  31 import net.pterodactylus.sone.core.Options.DefaultOption;
  32 import net.pterodactylus.sone.core.Options.Option;
  33 import net.pterodactylus.sone.core.Options.OptionWatcher;
  34 import net.pterodactylus.sone.data.Post;
  35 import net.pterodactylus.sone.data.Profile;
  36 import net.pterodactylus.sone.data.Reply;
  37 import net.pterodactylus.sone.data.Sone;
  38 import net.pterodactylus.sone.freenet.wot.Identity;
  39 import net.pterodactylus.sone.freenet.wot.IdentityListener;
  40 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  41 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  42 import net.pterodactylus.util.config.Configuration;
  43 import net.pterodactylus.util.config.ConfigurationException;
  44 import net.pterodactylus.util.logging.Logging;
  45 import net.pterodactylus.util.number.Numbers;
  46 import freenet.keys.FreenetURI;
  47
  48 /**
  49  * The Sone core.
  50  *
  51  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  52  */
  53 public class Core implements IdentityListener {
  54
  55         /**
  56          * Enumeration for the possible states of a {@link Sone}.
  57          *
  58          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  59          */
  60         public enum SoneStatus {
  61
  62                 /** The Sone is unknown, i.e. not yet downloaded. */
  63                 unknown,
  64
  65                 /** The Sone is idle, i.e. not being downloaded or inserted. */
  66                 idle,
  67
  68                 /** The Sone is currently being inserted. */
  69                 inserting,
  70
  71                 /** The Sone is currently being downloaded. */
  72                 downloading,
  73         }
  74
  75         /** The logger. */
  76         private static final Logger logger = Logging.getLogger(Core.class);
  77
  78         /** The options. */
  79         private final Options options = new Options();
  80
  81         /** The configuration. */
  82         private final Configuration configuration;
  83
  84         /** The identity manager. */
  85         private final IdentityManager identityManager;
  86
  87         /** Interface to freenet. */
  88         private final FreenetInterface freenetInterface;
  89
  90         /** The Sone downloader. */
  91         private final SoneDownloader soneDownloader;
  92
  93         /** The Sones’ statuses. */
  94         /* synchronize access on itself. */
  95         private final Map<Sone, SoneStatus> soneStatuses = new HashMap<Sone, SoneStatus>();
  96
  97         /** Sone inserters. */
  98         /* synchronize access on this on localSones. */
  99         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 100
 101         /** All local Sones. */
 102         /* synchronize access on this on itself. */
 103         private Map<String, Sone> localSones = new HashMap<String, Sone>();
 104
 105         /** All remote Sones. */
 106         /* synchronize access on this on itself. */
 107         private Map<String, Sone> remoteSones = new HashMap<String, Sone>();
 108
 109         /** All posts. */
 110         private Map<String, Post> posts = new HashMap<String, Post>();
 111
 112         /** All replies. */
 113         private Map<String, Reply> replies = new HashMap<String, Reply>();
 114
 115         /**
 116          * Creates a new core.
 117          *
 118          * @param configuration
 119          *            The configuration of the core
 120          * @param freenetInterface
 121          *            The freenet interface
 122          * @param identityManager
 123          *            The identity manager
 124          */
 125         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager) {
 126                 this.configuration = configuration;
 127                 this.freenetInterface = freenetInterface;
 128                 this.identityManager = identityManager;
 129                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 130         }
 131
 132         //
 133         // ACCESSORS
 134         //
 135
 136         /**
 137          * Returns the options used by the core.
 138          *
 139          * @return The options of the core
 140          */
 141         public Options getOptions() {
 142                 return options;
 143         }
 144
 145         /**
 146          * Returns the identity manager used by the core.
 147          *
 148          * @return The identity manager
 149          */
 150         public IdentityManager getIdentityManager() {
 151                 return identityManager;
 152         }
 153
 154         /**
 155          * Returns the status of the given Sone.
 156          *
 157          * @param sone
 158          *            The Sone to get the status for
 159          * @return The status of the Sone
 160          */
 161         public SoneStatus getSoneStatus(Sone sone) {
 162                 synchronized (soneStatuses) {
 163                         return soneStatuses.get(sone);
 164                 }
 165         }
 166
 167         /**
 168          * Sets the status of the given Sone.
 169          *
 170          * @param sone
 171          *            The Sone to set the status of
 172          * @param soneStatus
 173          *            The status to set
 174          */
 175         public void setSoneStatus(Sone sone, SoneStatus soneStatus) {
 176                 synchronized (soneStatuses) {
 177                         soneStatuses.put(sone, soneStatus);
 178                 }
 179         }
 180
 181         /**
 182          * Returns all Sones, remote and local.
 183          *
 184          * @return All Sones
 185          */
 186         public Set<Sone> getSones() {
 187                 Set<Sone> allSones = new HashSet<Sone>();
 188                 allSones.addAll(getLocalSones());
 189                 allSones.addAll(getRemoteSones());
 190                 return allSones;
 191         }
 192
 193         /**
 194          * Returns the Sone with the given ID, regardless whether it’s local or
 195          * remote.
 196          *
 197          * @param id
 198          *            The ID of the Sone to get
 199          * @return The Sone with the given ID, or {@code null} if there is no such
 200          *         Sone
 201          */
 202         public Sone getSone(String id) {
 203                 Sone sone = getRemoteSone(id);
 204                 if (sone != null) {
 205                         return sone;
 206                 }
 207                 sone = getLocalSone(id);
 208                 return sone;
 209         }
 210
 211         /**
 212          * Returns whether the given Sone is a local Sone.
 213          *
 214          * @param sone
 215          *            The Sone to check for its locality
 216          * @return {@code true} if the given Sone is local, {@code false} otherwise
 217          */
 218         public boolean isLocalSone(Sone sone) {
 219                 synchronized (localSones) {
 220                         return localSones.containsKey(sone.getId());
 221                 }
 222         }
 223
 224         /**
 225          * Returns all local Sones.
 226          *
 227          * @return All local Sones
 228          */
 229         public Set<Sone> getLocalSones() {
 230                 synchronized (localSones) {
 231                         return new HashSet<Sone>(localSones.values());
 232                 }
 233         }
 234
 235         /**
 236          * Returns the local Sone with the given ID.
 237          *
 238          * @param id
 239          *            The ID of the Sone to get
 240          * @return The Sone, or {@code null} if there is no Sone with the given ID
 241          */
 242         public Sone getLocalSone(String id) {
 243                 synchronized (localSones) {
 244                         return localSones.get(id);
 245                 }
 246         }
 247
 248         /**
 249          * Returns all remote Sones.
 250          *
 251          * @return All remote Sones
 252          */
 253         public Set<Sone> getRemoteSones() {
 254                 synchronized (remoteSones) {
 255                         return new HashSet<Sone>(remoteSones.values());
 256                 }
 257         }
 258
 259         /**
 260          * Returns the remote Sone with the given ID.
 261          *
 262          * @param id
 263          *            The ID of the remote Sone to get
 264          * @return The Sone, or {@code null} if there is no such Sone
 265          */
 266         public Sone getRemoteSone(String id) {
 267                 synchronized (remoteSones) {
 268                         return remoteSones.get(id);
 269                 }
 270         }
 271
 272         /**
 273          * Returns whether the given Sone is a remote Sone.
 274          *
 275          * @param sone
 276          *            The Sone to check
 277          * @return {@code true} if the given Sone is a remote Sone, {@code false}
 278          *         otherwise
 279          */
 280         public boolean isRemoteSone(Sone sone) {
 281                 synchronized (remoteSones) {
 282                         return remoteSones.containsKey(sone.getId());
 283                 }
 284         }
 285
 286         /**
 287          * Returns the post with the given ID.
 288          *
 289          * @param postId
 290          *            The ID of the post to get
 291          * @return The post, or {@code null} if there is no such post
 292          */
 293         public Post getPost(String postId) {
 294                 synchronized (posts) {
 295                         Post post = posts.get(postId);
 296                         if (post == null) {
 297                                 post = new Post(postId);
 298                                 posts.put(postId, post);
 299                         }
 300                         return post;
 301                 }
 302         }
 303
 304         /**
 305          * Returns the reply with the given ID.
 306          *
 307          * @param replyId
 308          *            The ID of the reply to get
 309          * @return The reply, or {@code null} if there is no such reply
 310          */
 311         public Reply getReply(String replyId) {
 312                 synchronized (replies) {
 313                         return replies.get(replyId);
 314                 }
 315         }
 316
 317         /**
 318          * Returns all replies for the given post, order ascending by time.
 319          *
 320          * @param post
 321          *            The post to get all replies for
 322          * @return All replies for the given post
 323          */
 324         public List<Reply> getReplies(Post post) {
 325                 Set<Sone> sones = getSones();
 326                 List<Reply> replies = new ArrayList<Reply>();
 327                 for (Sone sone : sones) {
 328                         for (Reply reply : sone.getReplies()) {
 329                                 if (reply.getPost().equals(post)) {
 330                                         replies.add(reply);
 331                                 }
 332                         }
 333                 }
 334                 Collections.sort(replies, Reply.TIME_COMPARATOR);
 335                 return replies;
 336         }
 337
 338         /**
 339          * Returns all Sones that have liked the given post.
 340          *
 341          * @param post
 342          *            The post to get the liking Sones for
 343          * @return The Sones that like the given post
 344          */
 345         public Set<Sone> getLikes(Post post) {
 346                 Set<Sone> sones = new HashSet<Sone>();
 347                 for (Sone sone : getSones()) {
 348                         if (sone.getLikedPostIds().contains(post.getId())) {
 349                                 sones.add(sone);
 350                         }
 351                 }
 352                 return sones;
 353         }
 354
 355         /**
 356          * Returns all Sones that have liked the given reply.
 357          *
 358          * @param reply
 359          *            The reply to get the liking Sones for
 360          * @return The Sones that like the given reply
 361          */
 362         public Set<Sone> getLikes(Reply reply) {
 363                 Set<Sone> sones = new HashSet<Sone>();
 364                 for (Sone sone : getSones()) {
 365                         if (sone.getLikedPostIds().contains(reply.getId())) {
 366                                 sones.add(sone);
 367                         }
 368                 }
 369                 return sones;
 370         }
 371
 372         //
 373         // ACTIONS
 374         //
 375
 376         /**
 377          * Adds a local Sone from the given ID which has to be the ID of an own
 378          * identity.
 379          *
 380          * @param id
 381          *            The ID of an own identity to add a Sone for
 382          * @return The added (or already existing) Sone
 383          */
 384         public Sone addLocalSone(String id) {
 385                 synchronized (localSones) {
 386                         if (localSones.containsKey(id)) {
 387                                 logger.log(Level.FINE, "Tried to add known local Sone: %s", id);
 388                                 return localSones.get(id);
 389                         }
 390                         OwnIdentity ownIdentity = identityManager.getOwnIdentity(id);
 391                         if (ownIdentity == null) {
 392                                 logger.log(Level.INFO, "Invalid Sone ID: %s", id);
 393                                 return null;
 394                         }
 395                         return addLocalSone(ownIdentity);
 396                 }
 397         }
 398
 399         /**
 400          * Adds a local Sone from the given own identity.
 401          *
 402          * @param ownIdentity
 403          *            The own identity to create a Sone from
 404          * @return The added (or already existing) Sone
 405          */
 406         public Sone addLocalSone(OwnIdentity ownIdentity) {
 407                 if (ownIdentity == null) {
 408                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 409                         return null;
 410                 }
 411                 synchronized (localSones) {
 412                         if (localSones.containsKey(ownIdentity.getId())) {
 413                                 logger.log(Level.FINE, "Tried to add known local Sone: %s", ownIdentity);
 414                                 return localSones.get(ownIdentity.getId());
 415                         }
 416                         final Sone sone;
 417                         try {
 418                                 sone = new Sone(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 419                                 sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 420                         } catch (MalformedURLException mue1) {
 421                                 logger.log(Level.SEVERE, "Could not convert the Identity’s URIs to Freenet URIs: " + ownIdentity.getInsertUri() + ", " + ownIdentity.getRequestUri(), mue1);
 422                                 return null;
 423                         }
 424                         /* TODO - load posts ’n stuff */
 425                         localSones.put(ownIdentity.getId(), sone);
 426                         SoneInserter soneInserter = new SoneInserter(this, freenetInterface, sone);
 427                         soneInserters.put(sone, soneInserter);
 428                         soneInserter.start();
 429                         setSoneStatus(sone, SoneStatus.idle);
 430                         new Thread(new Runnable() {
 431
 432                                 @Override
 433                                 @SuppressWarnings("synthetic-access")
 434                                 public void run() {
 435                                         soneDownloader.fetchSone(sone);
 436                                 }
 437
 438                         }, "Sone Downloader").start();
 439                         return sone;
 440                 }
 441         }
 442
 443         /**
 444          * Creates a new Sone for the given own identity.
 445          *
 446          * @param ownIdentity
 447          *            The own identity to create a Sone for
 448          * @return The created Sone
 449          */
 450         public Sone createSone(OwnIdentity ownIdentity) {
 451                 identityManager.addContext(ownIdentity, "Sone");
 452                 Sone sone = addLocalSone(ownIdentity);
 453                 synchronized (sone) {
 454                         /* mark as modified so that it gets inserted immediately. */
 455                         sone.setModificationCounter(sone.getModificationCounter() + 1);
 456                 }
 457                 return sone;
 458         }
 459
 460         /**
 461          * Adds the Sone of the given identity.
 462          *
 463          * @param identity
 464          *            The identity whose Sone to add
 465          * @return The added or already existing Sone
 466          */
 467         public Sone addRemoteSone(Identity identity) {
 468                 if (identity == null) {
 469                         logger.log(Level.WARNING, "Given Identity is null!");
 470                         return null;
 471                 }
 472                 synchronized (remoteSones) {
 473                         if (remoteSones.containsKey(identity.getId())) {
 474                                 logger.log(Level.FINE, "Identity already exists: %s", identity);
 475                                 return remoteSones.get(identity.getId());
 476                         }
 477                         Sone sone = new Sone(identity);
 478                         sone.setRequestUri(getSoneUri(identity.getRequestUri(), identity.getProperty("Sone.LatestEdition")));
 479                         remoteSones.put(identity.getId(), sone);
 480                         soneDownloader.addSone(sone);
 481                         setSoneStatus(sone, SoneStatus.idle);
 482                         return sone;
 483                 }
 484         }
 485
 486         /**
 487          * Updates the stores Sone with the given Sone.
 488          *
 489          * @param sone
 490          *            The updated Sone
 491          */
 492         public void updateSone(Sone sone) {
 493                 if (isRemoteSone(sone)) {
 494                         Sone storedSone = getRemoteSone(sone.getId());
 495                         if (!(sone.getTime() > storedSone.getTime())) {
 496                                 logger.log(Level.FINE, "Downloaded Sone %s is not newer than stored Sone %s.", new Object[] { sone, storedSone });
 497                                 return;
 498                         }
 499                         synchronized (posts) {
 500                                 for (Post post : storedSone.getPosts()) {
 501                                         posts.remove(post.getId());
 502                                 }
 503                                 for (Post post : sone.getPosts()) {
 504                                         posts.put(post.getId(), post);
 505                                 }
 506                         }
 507                         synchronized (replies) {
 508                                 for (Reply reply : storedSone.getReplies()) {
 509                                         replies.remove(reply.getId());
 510                                 }
 511                                 for (Reply reply : sone.getReplies()) {
 512                                         replies.put(reply.getId(), reply);
 513                                 }
 514                         }
 515                         synchronized (storedSone) {
 516                                 storedSone.setTime(sone.getTime());
 517                                 storedSone.setProfile(sone.getProfile());
 518                                 storedSone.setPosts(sone.getPosts());
 519                                 storedSone.setReplies(sone.getReplies());
 520                                 storedSone.setLikePostIds(sone.getLikedPostIds());
 521                                 storedSone.setLikeReplyIds(sone.getLikedReplyIds());
 522                                 storedSone.setLatestEdition(sone.getRequestUri().getEdition());
 523                         }
 524                         saveSone(storedSone);
 525                 }
 526         }
 527
 528         /**
 529          * Deletes the given Sone. This will remove the Sone from the
 530          * {@link #getLocalSone(String) local Sones}, stops its {@link SoneInserter}
 531          * and remove the context from its identity.
 532          *
 533          * @param sone
 534          *            The Sone to delete
 535          */
 536         public void deleteSone(Sone sone) {
 537                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
 538                         logger.log(Level.WARNING, "Tried to delete Sone of non-own identity: %s", sone);
 539                         return;
 540                 }
 541                 synchronized (localSones) {
 542                         if (!localSones.containsKey(sone.getId())) {
 543                                 logger.log(Level.WARNING, "Tried to delete non-local Sone: %s", sone);
 544                                 return;
 545                         }
 546                         localSones.remove(sone.getId());
 547                         soneInserters.remove(sone.getId()).stop();
 548                 }
 549                 identityManager.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
 550         }
 551
 552         /**
 553          * Saves the given Sone. This will persist all local settings for the given
 554          * Sone, such as the friends list and similar, private options.
 555          *
 556          * @param sone
 557          *            The Sone to save
 558          */
 559         public void saveSone(Sone sone) {
 560                 if (!isLocalSone(sone)) {
 561                         logger.log(Level.FINE, "Tried to save non-local Sone: %s", sone);
 562                         return;
 563                 }
 564                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
 565                         logger.log(Level.WARNING, "Local Sone without OwnIdentity found, refusing to save: %s", sone);
 566                         return;
 567                 }
 568
 569                 logger.log(Level.INFO, "Saving Sone: %s", sone);
 570                 identityManager.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
 571                 try {
 572                         /* save Sone into configuration. */
 573                         String sonePrefix = "Sone/" + sone.getId();
 574                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
 575
 576                         /* save profile. */
 577                         Profile profile = sone.getProfile();
 578                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
 579                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
 580                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
 581                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
 582                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
 583                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
 584
 585                         /* save posts. */
 586                         int postCounter = 0;
 587                         for (Post post : sone.getPosts()) {
 588                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
 589                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
 590                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
 591                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
 592                         }
 593                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
 594
 595                         /* save replies. */
 596                         int replyCounter = 0;
 597                         for (Reply reply : sone.getReplies()) {
 598                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
 599                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
 600                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPost().getId());
 601                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
 602                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
 603                         }
 604                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
 605
 606                         /* save post likes. */
 607                         int postLikeCounter = 0;
 608                         for (String postId : sone.getLikedPostIds()) {
 609                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
 610                         }
 611                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
 612
 613                         /* save reply likes. */
 614                         int replyLikeCounter = 0;
 615                         for (String replyId : sone.getLikedReplyIds()) {
 616                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
 617                         }
 618                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
 619
 620                         logger.log(Level.INFO, "Sone %s saved.", sone);
 621                 } catch (ConfigurationException ce1) {
 622                         logger.log(Level.WARNING, "Could not save Sone: " + sone, ce1);
 623                 }
 624         }
 625
 626         /**
 627          * Creates a new post.
 628          *
 629          * @param sone
 630          *            The Sone that creates the post
 631          * @param text
 632          *            The text of the post
 633          */
 634         public void createPost(Sone sone, String text) {
 635                 createPost(sone, System.currentTimeMillis(), text);
 636         }
 637
 638         /**
 639          * Creates a new post.
 640          *
 641          * @param sone
 642          *            The Sone that creates the post
 643          * @param time
 644          *            The time of the post
 645          * @param text
 646          *            The text of the post
 647          */
 648         public void createPost(Sone sone, long time, String text) {
 649                 if (!isLocalSone(sone)) {
 650                         logger.log(Level.FINE, "Tried to create post for non-local Sone: %s", sone);
 651                         return;
 652                 }
 653                 Post post = new Post(sone, time, text);
 654                 synchronized (posts) {
 655                         posts.put(post.getId(), post);
 656                 }
 657                 sone.addPost(post);
 658                 saveSone(sone);
 659         }
 660
 661         /**
 662          * Deletes the given post.
 663          *
 664          * @param post
 665          *            The post to delete
 666          */
 667         public void deletePost(Post post) {
 668                 if (!isLocalSone(post.getSone())) {
 669                         logger.log(Level.WARNING, "Tried to delete post of non-local Sone: %s", post.getSone());
 670                         return;
 671                 }
 672                 post.getSone().removePost(post);
 673                 synchronized (posts) {
 674                         posts.remove(post.getId());
 675                 }
 676                 saveSone(post.getSone());
 677         }
 678
 679         /**
 680          * Creates a new reply.
 681          *
 682          * @param sone
 683          *            The Sone that creates the reply
 684          * @param post
 685          *            The post that this reply refers to
 686          * @param text
 687          *            The text of the reply
 688          */
 689         public void createReply(Sone sone, Post post, String text) {
 690                 createReply(sone, post, System.currentTimeMillis(), text);
 691         }
 692
 693         /**
 694          * Creates a new reply.
 695          *
 696          * @param sone
 697          *            The Sone that creates the reply
 698          * @param post
 699          *            The post that this reply refers to
 700          * @param time
 701          *            The time of the reply
 702          * @param text
 703          *            The text of the reply
 704          */
 705         public void createReply(Sone sone, Post post, long time, String text) {
 706                 if (!isLocalSone(sone)) {
 707                         logger.log(Level.FINE, "Tried to create reply for non-local Sone: %s", sone);
 708                         return;
 709                 }
 710                 Reply reply = new Reply(sone, post, System.currentTimeMillis(), text);
 711                 synchronized (replies) {
 712                         replies.put(reply.getId(), reply);
 713                 }
 714                 sone.addReply(reply);
 715                 saveSone(sone);
 716         }
 717
 718         /**
 719          * Deletes the given reply.
 720          *
 721          * @param reply
 722          *            The reply to delete
 723          */
 724         public void deleteReply(Reply reply) {
 725                 Sone sone = reply.getSone();
 726                 if (!isLocalSone(sone)) {
 727                         logger.log(Level.FINE, "Tried to delete non-local reply: %s", reply);
 728                         return;
 729                 }
 730                 synchronized (replies) {
 731                         replies.remove(reply.getId());
 732                 }
 733                 sone.removeReply(reply);
 734                 saveSone(sone);
 735         }
 736
 737         /**
 738          * Starts the core.
 739          */
 740         public void start() {
 741                 loadConfiguration();
 742         }
 743
 744         /**
 745          * Stops the core.
 746          */
 747         public void stop() {
 748                 synchronized (localSones) {
 749                         for (SoneInserter soneInserter : soneInserters.values()) {
 750                                 soneInserter.stop();
 751                         }
 752                 }
 753                 saveConfiguration();
 754         }
 755
 756         //
 757         // PRIVATE METHODS
 758         //
 759
 760         /**
 761          * Loads the configuration.
 762          */
 763         @SuppressWarnings("unchecked")
 764         private void loadConfiguration() {
 765                 /* create options. */
 766                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new OptionWatcher<Integer>() {
 767
 768                         @Override
 769                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
 770                                 SoneInserter.setInsertionDelay(newValue);
 771                         }
 772
 773                 }));
 774                 options.addBooleanOption("ClearOnNextRestart", new DefaultOption<Boolean>(false));
 775                 options.addBooleanOption("ReallyClearOnNextRestart", new DefaultOption<Boolean>(false));
 776
 777                 /* read options from configuration. */
 778                 options.getBooleanOption("ClearOnNextRestart").set(configuration.getBooleanValue("Option/ClearOnNextRestart").getValue(null));
 779                 options.getBooleanOption("ReallyClearOnNextRestart").set(configuration.getBooleanValue("Option/ReallyClearOnNextRestart").getValue(null));
 780                 boolean clearConfiguration = options.getBooleanOption("ClearOnNextRestart").get() && options.getBooleanOption("ReallyClearOnNextRestart").get();
 781                 options.getBooleanOption("ClearOnNextRestart").set(null);
 782                 options.getBooleanOption("ReallyClearOnNextRestart").set(null);
 783                 if (clearConfiguration) {
 784                         /* stop loading the configuration. */
 785                         return;
 786                 }
 787
 788                 options.getIntegerOption("InsertionDelay").set(configuration.getIntValue("Option/InsertionDelay").getValue(null));
 789
 790         }
 791
 792         /**
 793          * Saves the current options.
 794          */
 795         private void saveConfiguration() {
 796                 /* store the options first. */
 797                 try {
 798                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
 799                         configuration.getBooleanValue("Option/ClearOnNextRestart").setValue(options.getBooleanOption("ClearOnNextRestart").getReal());
 800                         configuration.getBooleanValue("Option/ReallyClearOnNextRestart").setValue(options.getBooleanOption("ReallyClearOnNextRestart").getReal());
 801                 } catch (ConfigurationException ce1) {
 802                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
 803                 }
 804         }
 805
 806         /**
 807          * Generate a Sone URI from the given URI and latest edition.
 808          *
 809          * @param uriString
 810          *            The URI to derive the Sone URI from
 811          * @param latestEditionString
 812          *            The latest edition as a {@link String}, or {@code null}
 813          * @return The derived URI
 814          */
 815         private FreenetURI getSoneUri(String uriString, String latestEditionString) {
 816                 try {
 817                         FreenetURI uri = new FreenetURI(uriString).setDocName("Sone").setMetaString(new String[0]).setSuggestedEdition(Numbers.safeParseLong(latestEditionString, (long) 0));
 818                         return uri;
 819                 } catch (MalformedURLException mue1) {
 820                         logger.log(Level.WARNING, "Could not create Sone URI from URI: " + uriString, mue1);
 821                         return null;
 822                 }
 823         }
 824
 825         //
 826         // INTERFACE IdentityListener
 827         //
 828
 829         /**
 830          * {@inheritDoc}
 831          */
 832         @Override
 833         public void ownIdentityAdded(OwnIdentity ownIdentity) {
 834                 logger.log(Level.FINEST, "Adding OwnIdentity: " + ownIdentity);
 835                 if (ownIdentity.hasContext("Sone")) {
 836                         addLocalSone(ownIdentity);
 837                 }
 838         }
 839
 840         /**
 841          * {@inheritDoc}
 842          */
 843         @Override
 844         public void ownIdentityRemoved(OwnIdentity ownIdentity) {
 845                 /* TODO */
 846         }
 847
 848         /**
 849          * {@inheritDoc}
 850          */
 851         @Override
 852         public void identityAdded(Identity identity) {
 853                 logger.log(Level.FINEST, "Adding Identity: " + identity);
 854                 addRemoteSone(identity);
 855         }
 856
 857         /**
 858          * {@inheritDoc}
 859          */
 860         @Override
 861         public void identityUpdated(Identity identity) {
 862                 /* TODO */
 863         }
 864
 865         /**
 866          * {@inheritDoc}
 867          */
 868         @Override
 869         public void identityRemoved(Identity identity) {
 870                 /* TODO */
 871         }
 872
 873 }