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                         return posts.get(postId);
 296                 }
 297         }
 298
 299         /**
 300          * Returns the reply with the given ID.
 301          *
 302          * @param replyId
 303          *            The ID of the reply to get
 304          * @return The reply, or {@code null} if there is no such reply
 305          */
 306         public Reply getReply(String replyId) {
 307                 synchronized (replies) {
 308                         return replies.get(replyId);
 309                 }
 310         }
 311
 312         /**
 313          * Returns all replies for the given post, order ascending by time.
 314          *
 315          * @param post
 316          *            The post to get all replies for
 317          * @return All replies for the given post
 318          */
 319         public List<Reply> getReplies(Post post) {
 320                 Set<Sone> sones = getSones();
 321                 List<Reply> replies = new ArrayList<Reply>();
 322                 for (Sone sone : sones) {
 323                         for (Reply reply : sone.getReplies()) {
 324                                 if (reply.getPost().equals(post)) {
 325                                         replies.add(reply);
 326                                 }
 327                         }
 328                 }
 329                 Collections.sort(replies, Reply.TIME_COMPARATOR);
 330                 return replies;
 331         }
 332
 333         /**
 334          * Returns all Sones that have liked the given post.
 335          *
 336          * @param post
 337          *            The post to get the liking Sones for
 338          * @return The Sones that like the given post
 339          */
 340         public Set<Sone> getLikes(Post post) {
 341                 Set<Sone> sones = new HashSet<Sone>();
 342                 for (Sone sone : getSones()) {
 343                         if (sone.getLikedPostIds().contains(post.getId())) {
 344                                 sones.add(sone);
 345                         }
 346                 }
 347                 return sones;
 348         }
 349
 350         /**
 351          * Returns all Sones that have liked the given reply.
 352          *
 353          * @param reply
 354          *            The reply to get the liking Sones for
 355          * @return The Sones that like the given reply
 356          */
 357         public Set<Sone> getLikes(Reply reply) {
 358                 Set<Sone> sones = new HashSet<Sone>();
 359                 for (Sone sone : getSones()) {
 360                         if (sone.getLikedPostIds().contains(reply.getId())) {
 361                                 sones.add(sone);
 362                         }
 363                 }
 364                 return sones;
 365         }
 366
 367         //
 368         // ACTIONS
 369         //
 370
 371         /**
 372          * Adds a local Sone from the given ID which has to be the ID of an own
 373          * identity.
 374          *
 375          * @param id
 376          *            The ID of an own identity to add a Sone for
 377          * @return The added (or already existing) Sone
 378          */
 379         public Sone addLocalSone(String id) {
 380                 synchronized (localSones) {
 381                         if (localSones.containsKey(id)) {
 382                                 logger.log(Level.FINE, "Tried to add known local Sone: %s", id);
 383                                 return localSones.get(id);
 384                         }
 385                         OwnIdentity ownIdentity = identityManager.getOwnIdentity(id);
 386                         if (ownIdentity == null) {
 387                                 logger.log(Level.INFO, "Invalid Sone ID: %s", id);
 388                                 return null;
 389                         }
 390                         return addLocalSone(ownIdentity);
 391                 }
 392         }
 393
 394         /**
 395          * Adds a local Sone from the given own identity.
 396          *
 397          * @param ownIdentity
 398          *            The own identity to create a Sone from
 399          * @return The added (or already existing) Sone
 400          */
 401         public Sone addLocalSone(OwnIdentity ownIdentity) {
 402                 if (ownIdentity == null) {
 403                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 404                         return null;
 405                 }
 406                 synchronized (localSones) {
 407                         if (localSones.containsKey(ownIdentity.getId())) {
 408                                 logger.log(Level.FINE, "Tried to add known local Sone: %s", ownIdentity);
 409                                 return localSones.get(ownIdentity.getId());
 410                         }
 411                         final Sone sone;
 412                         try {
 413                                 sone = new Sone(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 414                                 sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 415                         } catch (MalformedURLException mue1) {
 416                                 logger.log(Level.SEVERE, "Could not convert the Identity’s URIs to Freenet URIs: " + ownIdentity.getInsertUri() + ", " + ownIdentity.getRequestUri(), mue1);
 417                                 return null;
 418                         }
 419                         /* TODO - load posts ’n stuff */
 420                         localSones.put(ownIdentity.getId(), sone);
 421                         SoneInserter soneInserter = new SoneInserter(this, freenetInterface, sone);
 422                         soneInserters.put(sone, soneInserter);
 423                         soneInserter.start();
 424                         setSoneStatus(sone, SoneStatus.idle);
 425                         new Thread(new Runnable() {
 426
 427                                 @Override
 428                                 @SuppressWarnings("synthetic-access")
 429                                 public void run() {
 430                                         soneDownloader.fetchSone(sone);
 431                                 }
 432
 433                         }, "Sone Downloader").start();
 434                         return sone;
 435                 }
 436         }
 437
 438         /**
 439          * Creates a new Sone for the given own identity.
 440          *
 441          * @param ownIdentity
 442          *            The own identity to create a Sone for
 443          * @return The created Sone
 444          */
 445         public Sone createSone(OwnIdentity ownIdentity) {
 446                 identityManager.addContext(ownIdentity, "Sone");
 447                 Sone sone = addLocalSone(ownIdentity);
 448                 synchronized (sone) {
 449                         /* mark as modified so that it gets inserted immediately. */
 450                         sone.setModificationCounter(sone.getModificationCounter() + 1);
 451                 }
 452                 return sone;
 453         }
 454
 455         /**
 456          * Adds the Sone of the given identity.
 457          *
 458          * @param identity
 459          *            The identity whose Sone to add
 460          * @return The added or already existing Sone
 461          */
 462         public Sone addRemoteSone(Identity identity) {
 463                 if (identity == null) {
 464                         logger.log(Level.WARNING, "Given Identity is null!");
 465                         return null;
 466                 }
 467                 synchronized (remoteSones) {
 468                         if (remoteSones.containsKey(identity.getId())) {
 469                                 logger.log(Level.FINE, "Identity already exists: %s", identity);
 470                                 return remoteSones.get(identity.getId());
 471                         }
 472                         Sone sone = new Sone(identity);
 473                         sone.setRequestUri(getSoneUri(identity.getRequestUri(), identity.getProperty("Sone.LatestEdition")));
 474                         remoteSones.put(identity.getId(), sone);
 475                         soneDownloader.addSone(sone);
 476                         setSoneStatus(sone, SoneStatus.idle);
 477                         return sone;
 478                 }
 479         }
 480
 481         /**
 482          * Updates the stores Sone with the given Sone.
 483          *
 484          * @param sone
 485          *            The updated Sone
 486          */
 487         public void updateSone(Sone sone) {
 488                 if (isRemoteSone(sone)) {
 489                         Sone storedSone = getRemoteSone(sone.getId());
 490                         if (!(sone.getTime() > storedSone.getTime())) {
 491                                 logger.log(Level.FINE, "Downloaded Sone %s is not newer than stored Sone %s.", new Object[] { sone, storedSone });
 492                                 return;
 493                         }
 494                         synchronized (posts) {
 495                                 for (Post post : storedSone.getPosts()) {
 496                                         posts.remove(post.getId());
 497                                 }
 498                                 for (Post post : sone.getPosts()) {
 499                                         posts.put(post.getId(), post);
 500                                 }
 501                         }
 502                         synchronized (replies) {
 503                                 for (Reply reply : storedSone.getReplies()) {
 504                                         replies.remove(reply.getId());
 505                                 }
 506                                 for (Reply reply : sone.getReplies()) {
 507                                         replies.put(reply.getId(), reply);
 508                                 }
 509                         }
 510                         synchronized (storedSone) {
 511                                 storedSone.setTime(sone.getTime());
 512                                 storedSone.setProfile(sone.getProfile());
 513                                 storedSone.setPosts(sone.getPosts());
 514                                 storedSone.setReplies(sone.getReplies());
 515                                 storedSone.setLikePostIds(sone.getLikedPostIds());
 516                                 storedSone.setLikeReplyIds(sone.getLikedReplyIds());
 517                                 storedSone.setLatestEdition(sone.getRequestUri().getEdition());
 518                         }
 519                         saveSone(storedSone);
 520                 }
 521         }
 522
 523         /**
 524          * Deletes the given Sone. This will remove the Sone from the
 525          * {@link #getLocalSone(String) local Sones}, stops its {@link SoneInserter}
 526          * and remove the context from its identity.
 527          *
 528          * @param sone
 529          *            The Sone to delete
 530          */
 531         public void deleteSone(Sone sone) {
 532                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
 533                         logger.log(Level.WARNING, "Tried to delete Sone of non-own identity: %s", sone);
 534                         return;
 535                 }
 536                 synchronized (localSones) {
 537                         if (!localSones.containsKey(sone.getId())) {
 538                                 logger.log(Level.WARNING, "Tried to delete non-local Sone: %s", sone);
 539                                 return;
 540                         }
 541                         localSones.remove(sone.getId());
 542                         soneInserters.remove(sone.getId()).stop();
 543                 }
 544                 identityManager.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
 545         }
 546
 547         /**
 548          * Saves the given Sone. This will persist all local settings for the given
 549          * Sone, such as the friends list and similar, private options.
 550          *
 551          * @param sone
 552          *            The Sone to save
 553          */
 554         public void saveSone(Sone sone) {
 555                 if (!isLocalSone(sone)) {
 556                         logger.log(Level.FINE, "Tried to save non-local Sone: %s", sone);
 557                         return;
 558                 }
 559                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
 560                         logger.log(Level.WARNING, "Local Sone without OwnIdentity found, refusing to save: %s", sone);
 561                         return;
 562                 }
 563
 564                 logger.log(Level.INFO, "Saving Sone: %s", sone);
 565                 identityManager.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
 566                 try {
 567                         /* save Sone into configuration. */
 568                         String sonePrefix = "Sone/" + sone.getId();
 569                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
 570
 571                         /* save profile. */
 572                         Profile profile = sone.getProfile();
 573                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
 574                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
 575                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
 576                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
 577                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
 578                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
 579
 580                         /* save posts. */
 581                         int postCounter = 0;
 582                         for (Post post : sone.getPosts()) {
 583                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
 584                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
 585                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
 586                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
 587                         }
 588                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
 589
 590                         /* save replies. */
 591                         int replyCounter = 0;
 592                         for (Reply reply : sone.getReplies()) {
 593                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
 594                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
 595                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPost().getId());
 596                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
 597                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
 598                         }
 599                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
 600
 601                         /* save post likes. */
 602                         int postLikeCounter = 0;
 603                         for (String postId : sone.getLikedPostIds()) {
 604                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
 605                         }
 606                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
 607
 608                         /* save reply likes. */
 609                         int replyLikeCounter = 0;
 610                         for (String replyId : sone.getLikedReplyIds()) {
 611                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
 612                         }
 613                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
 614
 615                         logger.log(Level.INFO, "Sone %s saved.", sone);
 616                 } catch (ConfigurationException ce1) {
 617                         logger.log(Level.WARNING, "Could not save Sone: " + sone, ce1);
 618                 }
 619         }
 620
 621         /**
 622          * Creates a new post.
 623          *
 624          * @param sone
 625          *            The Sone that creates the post
 626          * @param text
 627          *            The text of the post
 628          */
 629         public void createPost(Sone sone, String text) {
 630                 createPost(sone, System.currentTimeMillis(), text);
 631         }
 632
 633         /**
 634          * Creates a new post.
 635          *
 636          * @param sone
 637          *            The Sone that creates the post
 638          * @param time
 639          *            The time of the post
 640          * @param text
 641          *            The text of the post
 642          */
 643         public void createPost(Sone sone, long time, String text) {
 644                 if (!isLocalSone(sone)) {
 645                         logger.log(Level.FINE, "Tried to create post for non-local Sone: %s", sone);
 646                         return;
 647                 }
 648                 Post post = new Post(sone, time, text);
 649                 synchronized (posts) {
 650                         posts.put(post.getId(), post);
 651                 }
 652                 sone.addPost(post);
 653                 saveSone(sone);
 654         }
 655
 656         /**
 657          * Deletes the given post.
 658          *
 659          * @param post
 660          *            The post to delete
 661          */
 662         public void deletePost(Post post) {
 663                 if (!isLocalSone(post.getSone())) {
 664                         logger.log(Level.WARNING, "Tried to delete post of non-local Sone: %s", post.getSone());
 665                         return;
 666                 }
 667                 post.getSone().removePost(post);
 668                 synchronized (posts) {
 669                         posts.remove(post.getId());
 670                 }
 671                 saveSone(post.getSone());
 672         }
 673
 674         /**
 675          * Creates a new reply.
 676          *
 677          * @param sone
 678          *            The Sone that creates the reply
 679          * @param post
 680          *            The post that this reply refers to
 681          * @param text
 682          *            The text of the reply
 683          */
 684         public void createReply(Sone sone, Post post, String text) {
 685                 createReply(sone, post, System.currentTimeMillis(), text);
 686         }
 687
 688         /**
 689          * Creates a new reply.
 690          *
 691          * @param sone
 692          *            The Sone that creates the reply
 693          * @param post
 694          *            The post that this reply refers to
 695          * @param time
 696          *            The time of the reply
 697          * @param text
 698          *            The text of the reply
 699          */
 700         public void createReply(Sone sone, Post post, long time, String text) {
 701                 if (!isLocalSone(sone)) {
 702                         logger.log(Level.FINE, "Tried to create reply for non-local Sone: %s", sone);
 703                         return;
 704                 }
 705                 Reply reply = new Reply(sone, post, System.currentTimeMillis(), text);
 706                 synchronized (replies) {
 707                         replies.put(reply.getId(), reply);
 708                 }
 709                 sone.addReply(reply);
 710                 saveSone(sone);
 711         }
 712
 713         /**
 714          * Deletes the given reply.
 715          *
 716          * @param reply
 717          *            The reply to delete
 718          */
 719         public void deleteReply(Reply reply) {
 720                 Sone sone = reply.getSone();
 721                 if (!isLocalSone(sone)) {
 722                         logger.log(Level.FINE, "Tried to delete non-local reply: %s", reply);
 723                         return;
 724                 }
 725                 synchronized (replies) {
 726                         replies.remove(reply.getId());
 727                 }
 728                 sone.removeReply(reply);
 729                 saveSone(sone);
 730         }
 731
 732         /**
 733          * Starts the core.
 734          */
 735         public void start() {
 736                 loadConfiguration();
 737         }
 738
 739         /**
 740          * Stops the core.
 741          */
 742         public void stop() {
 743                 synchronized (localSones) {
 744                         for (SoneInserter soneInserter : soneInserters.values()) {
 745                                 soneInserter.stop();
 746                         }
 747                 }
 748                 saveConfiguration();
 749         }
 750
 751         //
 752         // PRIVATE METHODS
 753         //
 754
 755         /**
 756          * Loads the configuration.
 757          */
 758         @SuppressWarnings("unchecked")
 759         private void loadConfiguration() {
 760                 /* create options. */
 761                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new OptionWatcher<Integer>() {
 762
 763                         @Override
 764                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
 765                                 SoneInserter.setInsertionDelay(newValue);
 766                         }
 767
 768                 }));
 769                 options.addBooleanOption("ClearOnNextRestart", new DefaultOption<Boolean>(false));
 770                 options.addBooleanOption("ReallyClearOnNextRestart", new DefaultOption<Boolean>(false));
 771
 772                 /* read options from configuration. */
 773                 options.getBooleanOption("ClearOnNextRestart").set(configuration.getBooleanValue("Option/ClearOnNextRestart").getValue(null));
 774                 options.getBooleanOption("ReallyClearOnNextRestart").set(configuration.getBooleanValue("Option/ReallyClearOnNextRestart").getValue(null));
 775                 boolean clearConfiguration = options.getBooleanOption("ClearOnNextRestart").get() && options.getBooleanOption("ReallyClearOnNextRestart").get();
 776                 options.getBooleanOption("ClearOnNextRestart").set(null);
 777                 options.getBooleanOption("ReallyClearOnNextRestart").set(null);
 778                 if (clearConfiguration) {
 779                         /* stop loading the configuration. */
 780                         return;
 781                 }
 782
 783                 options.getIntegerOption("InsertionDelay").set(configuration.getIntValue("Option/InsertionDelay").getValue(null));
 784
 785         }
 786
 787         /**
 788          * Saves the current options.
 789          */
 790         private void saveConfiguration() {
 791                 /* store the options first. */
 792                 try {
 793                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
 794                         configuration.getBooleanValue("Option/ClearOnNextRestart").setValue(options.getBooleanOption("ClearOnNextRestart").getReal());
 795                         configuration.getBooleanValue("Option/ReallyClearOnNextRestart").setValue(options.getBooleanOption("ReallyClearOnNextRestart").getReal());
 796                 } catch (ConfigurationException ce1) {
 797                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
 798                 }
 799         }
 800
 801         /**
 802          * Generate a Sone URI from the given URI and latest edition.
 803          *
 804          * @param uriString
 805          *            The URI to derive the Sone URI from
 806          * @param latestEditionString
 807          *            The latest edition as a {@link String}, or {@code null}
 808          * @return The derived URI
 809          */
 810         private FreenetURI getSoneUri(String uriString, String latestEditionString) {
 811                 try {
 812                         FreenetURI uri = new FreenetURI(uriString).setDocName("Sone").setMetaString(new String[0]).setSuggestedEdition(Numbers.safeParseLong(latestEditionString, (long) 0));
 813                         return uri;
 814                 } catch (MalformedURLException mue1) {
 815                         logger.log(Level.WARNING, "Could not create Sone URI from URI: " + uriString, mue1);
 816                         return null;
 817                 }
 818         }
 819
 820         //
 821         // INTERFACE IdentityListener
 822         //
 823
 824         /**
 825          * {@inheritDoc}
 826          */
 827         @Override
 828         public void ownIdentityAdded(OwnIdentity ownIdentity) {
 829                 logger.log(Level.FINEST, "Adding OwnIdentity: " + ownIdentity);
 830                 if (ownIdentity.hasContext("Sone")) {
 831                         addLocalSone(ownIdentity);
 832                 }
 833         }
 834
 835         /**
 836          * {@inheritDoc}
 837          */
 838         @Override
 839         public void ownIdentityRemoved(OwnIdentity ownIdentity) {
 840                 /* TODO */
 841         }
 842
 843         /**
 844          * {@inheritDoc}
 845          */
 846         @Override
 847         public void identityAdded(Identity identity) {
 848                 logger.log(Level.FINEST, "Adding Identity: " + identity);
 849                 addRemoteSone(identity);
 850         }
 851
 852         /**
 853          * {@inheritDoc}
 854          */
 855         @Override
 856         public void identityUpdated(Identity identity) {
 857                 /* TODO */
 858         }
 859
 860         /**
 861          * {@inheritDoc}
 862          */
 863         @Override
 864         public void identityRemoved(Identity identity) {
 865                 /* TODO */
 866         }
 867
 868 }