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

   1 /*
   2  * Sone - Core.java - Copyright © 2010–2013 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 static com.google.common.base.Optional.fromNullable;
  21 import static com.google.common.base.Preconditions.checkArgument;
  22 import static com.google.common.base.Preconditions.checkNotNull;
  23 import static com.google.common.primitives.Longs.tryParse;
  24 import static java.util.logging.Logger.getLogger;
  25
  26 import java.util.ArrayList;
  27 import java.util.Collection;
  28 import java.util.HashMap;
  29 import java.util.HashSet;
  30 import java.util.List;
  31 import java.util.Map;
  32 import java.util.Map.Entry;
  33 import java.util.Set;
  34 import java.util.concurrent.ExecutorService;
  35 import java.util.concurrent.Executors;
  36 import java.util.concurrent.ScheduledExecutorService;
  37 import java.util.concurrent.TimeUnit;
  38 import java.util.logging.Level;
  39 import java.util.logging.Logger;
  40
  41 import net.pterodactylus.sone.core.SoneChangeDetector.PostProcessor;
  42 import net.pterodactylus.sone.core.SoneChangeDetector.PostReplyProcessor;
  43 import net.pterodactylus.sone.core.event.ImageInsertFinishedEvent;
  44 import net.pterodactylus.sone.core.event.MarkPostKnownEvent;
  45 import net.pterodactylus.sone.core.event.MarkPostReplyKnownEvent;
  46 import net.pterodactylus.sone.core.event.MarkSoneKnownEvent;
  47 import net.pterodactylus.sone.core.event.NewPostFoundEvent;
  48 import net.pterodactylus.sone.core.event.NewPostReplyFoundEvent;
  49 import net.pterodactylus.sone.core.event.NewSoneFoundEvent;
  50 import net.pterodactylus.sone.core.event.PostRemovedEvent;
  51 import net.pterodactylus.sone.core.event.PostReplyRemovedEvent;
  52 import net.pterodactylus.sone.core.event.SoneInsertedEvent;
  53 import net.pterodactylus.sone.core.event.SoneLockedEvent;
  54 import net.pterodactylus.sone.core.event.SoneRemovedEvent;
  55 import net.pterodactylus.sone.core.event.SoneUnlockedEvent;
  56 import net.pterodactylus.sone.data.Album;
  57 import net.pterodactylus.sone.data.Image;
  58 import net.pterodactylus.sone.data.LocalSone;
  59 import net.pterodactylus.sone.data.Post;
  60 import net.pterodactylus.sone.data.PostReply;
  61 import net.pterodactylus.sone.data.Reply;
  62 import net.pterodactylus.sone.data.Sone;
  63 import net.pterodactylus.sone.data.Sone.SoneStatus;
  64 import net.pterodactylus.sone.data.TemporaryImage;
  65 import net.pterodactylus.sone.database.AlbumBuilder;
  66 import net.pterodactylus.sone.database.Database;
  67 import net.pterodactylus.sone.database.DatabaseException;
  68 import net.pterodactylus.sone.database.ImageBuilder;
  69 import net.pterodactylus.sone.database.PostBuilder;
  70 import net.pterodactylus.sone.database.PostProvider;
  71 import net.pterodactylus.sone.database.PostReplyBuilder;
  72 import net.pterodactylus.sone.database.PostReplyProvider;
  73 import net.pterodactylus.sone.database.SoneBuilder;
  74 import net.pterodactylus.sone.database.SoneProvider;
  75 import net.pterodactylus.sone.freenet.wot.Identity;
  76 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  77 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  78 import net.pterodactylus.sone.freenet.wot.event.IdentityAddedEvent;
  79 import net.pterodactylus.sone.freenet.wot.event.IdentityRemovedEvent;
  80 import net.pterodactylus.sone.freenet.wot.event.IdentityUpdatedEvent;
  81 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityAddedEvent;
  82 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityRemovedEvent;
  83 import net.pterodactylus.util.config.Configuration;
  84 import net.pterodactylus.util.config.ConfigurationException;
  85 import net.pterodactylus.util.service.AbstractService;
  86 import net.pterodactylus.util.thread.NamedThreadFactory;
  87
  88 import com.google.common.annotations.VisibleForTesting;
  89 import com.google.common.base.Function;
  90 import com.google.common.base.Optional;
  91 import com.google.common.collect.HashMultimap;
  92 import com.google.common.collect.Multimap;
  93 import com.google.common.collect.Multimaps;
  94 import com.google.common.eventbus.EventBus;
  95 import com.google.common.eventbus.Subscribe;
  96 import com.google.inject.Inject;
  97 import com.google.inject.Singleton;
  98
  99 /**
 100  * The Sone core.
 101  *
 102  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 103  */
 104 @Singleton
 105 public class Core extends AbstractService implements SoneProvider, PostProvider, PostReplyProvider {
 106
 107         /** The logger. */
 108         private static final Logger logger = getLogger("Sone.Core");
 109
 110         /** The start time. */
 111         private final long startupTime = System.currentTimeMillis();
 112
 113         /** The preferences. */
 114         private final Preferences preferences;
 115
 116         /** The event bus. */
 117         private final EventBus eventBus;
 118
 119         /** The configuration. */
 120         private final Configuration configuration;
 121
 122         /** Whether we’re currently saving the configuration. */
 123         private boolean storingConfiguration = false;
 124
 125         /** The identity manager. */
 126         private final IdentityManager identityManager;
 127
 128         /** Interface to freenet. */
 129         private final FreenetInterface freenetInterface;
 130
 131         /** The Sone downloader. */
 132         private final SoneDownloader soneDownloader;
 133
 134         /** The image inserter. */
 135         private final ImageInserter imageInserter;
 136
 137         /** Sone downloader thread-pool. */
 138         private final ExecutorService soneDownloaders = Executors.newFixedThreadPool(10, new NamedThreadFactory("Sone Downloader %2$d"));
 139
 140         /** The update checker. */
 141         private final UpdateChecker updateChecker;
 142
 143         /** The trust updater. */
 144         private final WebOfTrustUpdater webOfTrustUpdater;
 145
 146         /** Locked local Sones. */
 147         /* synchronize on itself. */
 148         private final Set<LocalSone> lockedSones = new HashSet<LocalSone>();
 149
 150         /** Sone inserters. */
 151         /* synchronize access on this on sones. */
 152         private final Map<LocalSone, SoneInserter> soneInserters = new HashMap<LocalSone, SoneInserter>();
 153
 154         /** Sone rescuers. */
 155         /* synchronize access on this on sones. */
 156         private final Map<LocalSone, SoneRescuer> soneRescuers = new HashMap<LocalSone, SoneRescuer>();
 157
 158         /** The post database. */
 159         private final Database database;
 160
 161         /** Trusted identities, sorted by own identities. */
 162         private final Multimap<OwnIdentity, Identity> trustedIdentities = Multimaps.synchronizedSetMultimap(HashMultimap.<OwnIdentity, Identity>create());
 163
 164         /** All temporary images. */
 165         private final Map<String, TemporaryImage> temporaryImages = new HashMap<String, TemporaryImage>();
 166
 167         /** Ticker for threads that mark own elements as known. */
 168         private final ScheduledExecutorService localElementTicker = Executors.newScheduledThreadPool(1);
 169
 170         /** The time the configuration was last touched. */
 171         private volatile long lastConfigurationUpdate;
 172
 173         /**
 174          * Creates a new core.
 175          *
 176          * @param configuration
 177          *            The configuration of the core
 178          * @param freenetInterface
 179          *            The freenet interface
 180          * @param identityManager
 181          *            The identity manager
 182          * @param webOfTrustUpdater
 183          *            The WebOfTrust updater
 184          * @param eventBus
 185          *            The event bus
 186          * @param database
 187          *            The database
 188          */
 189         @Inject
 190         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager, WebOfTrustUpdater webOfTrustUpdater, EventBus eventBus, Database database) {
 191                 super("Sone Core");
 192                 this.configuration = configuration;
 193                 this.freenetInterface = freenetInterface;
 194                 this.identityManager = identityManager;
 195                 this.soneDownloader = new SoneDownloaderImpl(this, freenetInterface);
 196                 this.imageInserter = new ImageInserter(freenetInterface, freenetInterface.new InsertTokenSupplier());
 197                 this.updateChecker = new UpdateChecker(eventBus, freenetInterface);
 198                 this.webOfTrustUpdater = webOfTrustUpdater;
 199                 this.eventBus = eventBus;
 200                 this.database = database;
 201                 preferences = new Preferences(eventBus);
 202         }
 203
 204         @VisibleForTesting
 205         protected Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager, SoneDownloader soneDownloader, ImageInserter imageInserter, UpdateChecker updateChecker, WebOfTrustUpdater webOfTrustUpdater, EventBus eventBus, Database database) {
 206                 super("Sone Core");
 207                 this.configuration = configuration;
 208                 this.freenetInterface = freenetInterface;
 209                 this.identityManager = identityManager;
 210                 this.soneDownloader = soneDownloader;
 211                 this.imageInserter = imageInserter;
 212                 this.updateChecker = updateChecker;
 213                 this.webOfTrustUpdater = webOfTrustUpdater;
 214                 this.eventBus = eventBus;
 215                 this.database = database;
 216                 preferences = new Preferences(eventBus);
 217         }
 218
 219         //
 220         // ACCESSORS
 221         //
 222
 223         /**
 224          * Returns the time Sone was started.
 225          *
 226          * @return The startup time (in milliseconds since Jan 1, 1970 UTC)
 227          */
 228         public long getStartupTime() {
 229                 return startupTime;
 230         }
 231
 232         /**
 233          * Returns the options used by the core.
 234          *
 235          * @return The options of the core
 236          */
 237         public Preferences getPreferences() {
 238                 return preferences;
 239         }
 240
 241         /**
 242          * Returns the identity manager used by the core.
 243          *
 244          * @return The identity manager
 245          */
 246         public IdentityManager getIdentityManager() {
 247                 return identityManager;
 248         }
 249
 250         /**
 251          * Returns the update checker.
 252          *
 253          * @return The update checker
 254          */
 255         public UpdateChecker getUpdateChecker() {
 256                 return updateChecker;
 257         }
 258
 259         /**
 260          * Returns the Sone rescuer for the given local Sone.
 261          *
 262          * @param sone
 263          *            The local Sone to get the rescuer for
 264          * @return The Sone rescuer for the given Sone
 265          */
 266         public SoneRescuer getSoneRescuer(LocalSone sone) {
 267                 checkNotNull(sone, "sone must not be null");
 268                 synchronized (soneRescuers) {
 269                         SoneRescuer soneRescuer = soneRescuers.get(sone);
 270                         if (soneRescuer == null) {
 271                                 soneRescuer = new SoneRescuer(this, soneDownloader, sone);
 272                                 soneRescuers.put(sone, soneRescuer);
 273                                 soneRescuer.start();
 274                         }
 275                         return soneRescuer;
 276                 }
 277         }
 278
 279         /**
 280          * Returns whether the given Sone is currently locked.
 281          *
 282          * @param sone
 283          *            The sone to check
 284          * @return {@code true} if the Sone is locked, {@code false} if it is not
 285          */
 286         public boolean isLocked(LocalSone sone) {
 287                 synchronized (lockedSones) {
 288                         return lockedSones.contains(sone);
 289                 }
 290         }
 291
 292         public SoneBuilder soneBuilder() {
 293                 return database.newSoneBuilder();
 294         }
 295
 296         /**
 297          * {@inheritDocs}
 298          */
 299         @Override
 300         public Collection<Sone> getSones() {
 301                 return database.getSones();
 302         }
 303
 304         @Override
 305         public Function<String, Optional<Sone>> soneLoader() {
 306                 return database.soneLoader();
 307         }
 308
 309         /**
 310          * Returns the Sone with the given ID, regardless whether it’s local or
 311          * remote.
 312          *
 313          * @param id
 314          *            The ID of the Sone to get
 315          * @return The Sone with the given ID, or {@code null} if there is no such
 316          *         Sone
 317          */
 318         @Override
 319         public Optional<Sone> getSone(String id) {
 320                 return database.getSone(id);
 321         }
 322
 323         @Override
 324         public Collection<LocalSone> getLocalSones() {
 325                 return database.getLocalSones();
 326         }
 327
 328         public Optional<LocalSone> getLocalSone(String id) {
 329                 return database.getLocalSone(id);
 330         }
 331
 332         /**
 333          * {@inheritDocs}
 334          */
 335         @Override
 336         public Collection<Sone> getRemoteSones() {
 337                 return database.getRemoteSones();
 338         }
 339
 340         /**
 341          * Returns the remote Sone with the given ID.
 342          *
 343          *
 344          * @param id
 345          *            The ID of the remote Sone to get
 346          * @return The Sone with the given ID
 347          */
 348         public Sone getRemoteSone(String id) {
 349                 return database.getSone(id).orNull();
 350         }
 351
 352         /**
 353          * Returns whether the given Sone has been modified.
 354          *
 355          * @param sone
 356          *            The Sone to check for modifications
 357          * @return {@code true} if a modification has been detected in the Sone,
 358          *         {@code false} otherwise
 359          */
 360         public boolean isModifiedSone(LocalSone sone) {
 361                 return soneInserters.containsKey(sone) && soneInserters.get(sone).isModified();
 362         }
 363
 364         /**
 365          * Returns the time when the given was first followed by any local Sone.
 366          *
 367          * @param sone
 368          *            The Sone to get the time for
 369          * @return The time (in milliseconds since Jan 1, 1970) the Sone has first
 370          *         been followed, or {@link Long#MAX_VALUE}
 371          */
 372         public long getSoneFollowingTime(Sone sone) {
 373                 return database.getSoneFollowingTime(sone.getId()).or(Long.MAX_VALUE);
 374         }
 375
 376         /**
 377          * Returns a post builder.
 378          *
 379          * @return A new post builder
 380          */
 381         public PostBuilder postBuilder() {
 382                 return database.newPostBuilder();
 383         }
 384
 385         /**
 386          * {@inheritDoc}
 387          */
 388         @Override
 389         public Optional<Post> getPost(String postId) {
 390                 return database.getPost(postId);
 391         }
 392
 393         /**
 394          * {@inheritDocs}
 395          */
 396         @Override
 397         public Collection<Post> getPosts(String soneId) {
 398                 return database.getPosts(soneId);
 399         }
 400
 401         /**
 402          * {@inheritDoc}
 403          */
 404         @Override
 405         public Collection<Post> getDirectedPosts(final String recipientId) {
 406                 checkNotNull(recipientId, "recipient must not be null");
 407                 return database.getDirectedPosts(recipientId);
 408         }
 409
 410         /**
 411          * Returns a post reply builder.
 412          *
 413          * @return A new post reply builder
 414          */
 415         public PostReplyBuilder postReplyBuilder() {
 416                 return database.newPostReplyBuilder();
 417         }
 418
 419         /**
 420          * {@inheritDoc}
 421          */
 422         @Override
 423         public Optional<PostReply> getPostReply(String replyId) {
 424                 return database.getPostReply(replyId);
 425         }
 426
 427         /**
 428          * {@inheritDoc}
 429          */
 430         @Override
 431         public List<PostReply> getReplies(final String postId) {
 432                 return database.getReplies(postId);
 433         }
 434
 435         /**
 436          * Returns all Sones that have liked the given post.
 437          *
 438          * @param post
 439          *            The post to get the liking Sones for
 440          * @return The Sones that like the given post
 441          */
 442         public Set<Sone> getLikes(Post post) {
 443                 Set<Sone> sones = new HashSet<Sone>();
 444                 for (Sone sone : getSones()) {
 445                         if (sone.getLikedPostIds().contains(post.getId())) {
 446                                 sones.add(sone);
 447                         }
 448                 }
 449                 return sones;
 450         }
 451
 452         /**
 453          * Returns all Sones that have liked the given reply.
 454          *
 455          * @param reply
 456          *            The reply to get the liking Sones for
 457          * @return The Sones that like the given reply
 458          */
 459         public Set<Sone> getLikes(PostReply reply) {
 460                 Set<Sone> sones = new HashSet<Sone>();
 461                 for (Sone sone : getSones()) {
 462                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 463                                 sones.add(sone);
 464                         }
 465                 }
 466                 return sones;
 467         }
 468
 469         /**
 470          * Returns whether the given post is bookmarked.
 471          *
 472          * @param post
 473          *            The post to check
 474          * @return {@code true} if the given post is bookmarked, {@code false}
 475          *         otherwise
 476          */
 477         public boolean isBookmarked(Post post) {
 478                 return database.isPostBookmarked(post);
 479         }
 480
 481         /**
 482          * Returns all currently known bookmarked posts.
 483          *
 484          * @return All bookmarked posts
 485          */
 486         public Set<Post> getBookmarkedPosts() {
 487                 return database.getBookmarkedPosts();
 488         }
 489
 490         public AlbumBuilder albumBuilder() {
 491                 return database.newAlbumBuilder();
 492         }
 493
 494         /**
 495          * Returns the album with the given ID, optionally creating a new album if
 496          * an album with the given ID can not be found.
 497          *
 498          * @param albumId
 499          *            The ID of the album
 500          * @return The album with the given ID, or {@code null} if no album with the
 501          *         given ID exists
 502          */
 503         public Album getAlbum(String albumId) {
 504                 return database.getAlbum(albumId).orNull();
 505         }
 506
 507         public ImageBuilder imageBuilder() {
 508                 return database.newImageBuilder();
 509         }
 510
 511         /**
 512          * Returns the image with the given ID, creating it if necessary.
 513          *
 514          * @param imageId
 515          *            The ID of the image
 516          * @return The image with the given ID
 517          */
 518         public Image getImage(String imageId) {
 519                 return getImage(imageId, true);
 520         }
 521
 522         /**
 523          * Returns the image with the given ID, optionally creating it if it does
 524          * not exist.
 525          *
 526          * @param imageId
 527          *            The ID of the image
 528          * @param create
 529          *            {@code true} to create an image if none exists with the given
 530          *            ID
 531          * @return The image with the given ID, or {@code null} if none exists and
 532          *         none was created
 533          */
 534         public Image getImage(String imageId, boolean create) {
 535                 Optional<Image> image = database.getImage(imageId);
 536                 if (image.isPresent()) {
 537                         return image.get();
 538                 }
 539                 if (!create) {
 540                         return null;
 541                 }
 542                 Image newImage = database.newImageBuilder().withId(imageId).build();
 543                 database.storeImage(newImage);
 544                 return newImage;
 545         }
 546
 547         /**
 548          * Returns the temporary image with the given ID.
 549          *
 550          * @param imageId
 551          *            The ID of the temporary image
 552          * @return The temporary image, or {@code null} if there is no temporary
 553          *         image with the given ID
 554          */
 555         public TemporaryImage getTemporaryImage(String imageId) {
 556                 synchronized (temporaryImages) {
 557                         return temporaryImages.get(imageId);
 558                 }
 559         }
 560
 561         //
 562         // ACTIONS
 563         //
 564
 565         /**
 566          * Locks the given Sone. A locked Sone will not be inserted by
 567          * {@link SoneInserter} until it is {@link #unlockSone(LocalSone) unlocked}
 568          * again.
 569          *
 570          * @param sone
 571          *            The sone to lock
 572          */
 573         public void lockSone(LocalSone sone) {
 574                 synchronized (lockedSones) {
 575                         if (lockedSones.add(sone)) {
 576                                 eventBus.post(new SoneLockedEvent(sone));
 577                         }
 578                 }
 579         }
 580
 581         /**
 582          * Unlocks the given Sone.
 583          *
 584          * @see #lockSone(LocalSone)
 585          * @param sone
 586          *            The sone to unlock
 587          */
 588         public void unlockSone(LocalSone sone) {
 589                 synchronized (lockedSones) {
 590                         if (lockedSones.remove(sone)) {
 591                                 eventBus.post(new SoneUnlockedEvent(sone));
 592                         }
 593                 }
 594         }
 595
 596         /**
 597          * Adds a local Sone from the given own identity.
 598          *
 599          * @param ownIdentity
 600          *            The own identity to create a Sone from
 601          * @return The added (or already existing) Sone
 602          */
 603         public LocalSone addLocalSone(OwnIdentity ownIdentity) {
 604                 if (ownIdentity == null) {
 605                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 606                         return null;
 607                 }
 608                 logger.info(String.format("Adding Sone from OwnIdentity: %s", ownIdentity));
 609                 LocalSone sone = database.registerLocalSone(ownIdentity);
 610                 SoneInserter soneInserter = new SoneInserter(this, eventBus, freenetInterface, database, ownIdentity.getId());
 611                 eventBus.register(soneInserter);
 612                 synchronized (soneInserters) {
 613                         soneInserters.put(sone, soneInserter);
 614                 }
 615                 synchronized (soneInserters) {
 616                         soneInserters.get(sone).setLastInsertFingerprint(database.getLastInsertFingerprint(sone));
 617                 }
 618                 sone.setStatus(SoneStatus.idle);
 619                 soneInserter.start();
 620                 return sone;
 621         }
 622
 623         /**
 624          * Creates a new Sone for the given own identity.
 625          *
 626          * @param ownIdentity
 627          *            The own identity to create a Sone for
 628          * @return The created Sone
 629          */
 630         public Sone createSone(OwnIdentity ownIdentity) {
 631                 if (!webOfTrustUpdater.addContextWait(ownIdentity, "Sone")) {
 632                         logger.log(Level.SEVERE, String.format("Could not add “Sone” context to own identity: %s", ownIdentity));
 633                         return null;
 634                 }
 635                 LocalSone sone = addLocalSone(ownIdentity);
 636
 637                 followSone(sone, "nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI");
 638                 touchConfiguration();
 639                 return sone;
 640         }
 641
 642         /**
 643          * Adds the Sone of the given identity.
 644          *
 645          * @param identity
 646          *            The identity whose Sone to add
 647          * @return The added or already existing Sone
 648          */
 649         public Sone addRemoteSone(Identity identity) {
 650                 if (identity == null) {
 651                         logger.log(Level.WARNING, "Given Identity is null!");
 652                         return null;
 653                 }
 654                 final Long latestEdition = tryParse(fromNullable(
 655                                 identity.getProperty("Sone.LatestEdition")).or("0"));
 656                 Optional<Sone> existingSone = getSone(identity.getId());
 657                 if (existingSone.isPresent() && existingSone.get().isLocal()) {
 658                         return existingSone.get();
 659                 }
 660                 boolean newSone = !existingSone.isPresent();
 661                 Sone sone = !newSone ? existingSone.get() : database.newSoneBuilder().from(identity).build();
 662                 sone.setLatestEdition(latestEdition);
 663                 if (newSone) {
 664                         newSone = !database.isSoneKnown(sone);
 665                         sone.setKnown(!newSone);
 666                         if (newSone) {
 667                                 eventBus.post(new NewSoneFoundEvent(sone));
 668                                 for (LocalSone localSone : getLocalSones()) {
 669                                         if (localSone.getOptions().isAutoFollow()) {
 670                                                 followSone(localSone, sone.getId());
 671                                         }
 672                                 }
 673                         }
 674                 }
 675                 database.storeSone(sone);
 676                 soneDownloader.addSone(sone);
 677                 soneDownloaders.execute(soneDownloader.fetchSoneWithUriAction(sone));
 678                 return sone;
 679         }
 680
 681         /**
 682          * Lets the given local Sone follow the Sone with the given ID.
 683          *
 684          * @param sone
 685          *            The local Sone that should follow another Sone
 686          * @param soneId
 687          *            The ID of the Sone to follow
 688          */
 689         public void followSone(LocalSone sone, String soneId) {
 690                 checkNotNull(sone, "sone must not be null");
 691                 checkNotNull(soneId, "soneId must not be null");
 692                 boolean newFriend = !database.getSoneFollowingTime(soneId).isPresent();
 693                 database.addFriend(sone, soneId);
 694                 if (newFriend) {
 695                         long now = System.currentTimeMillis();
 696                         Optional<Sone> followedSone = getSone(soneId);
 697                         if (!followedSone.isPresent()) {
 698                                 return;
 699                         }
 700                         for (Post post : followedSone.get().getPosts()) {
 701                                 if (post.getTime() < now) {
 702                                         markPostKnown(post);
 703                                 }
 704                         }
 705                         for (PostReply reply : followedSone.get().getReplies()) {
 706                                 if (reply.getTime() < now) {
 707                                         markReplyKnown(reply);
 708                                 }
 709                         }
 710                 }
 711         }
 712
 713         /**
 714          * Lets the given local Sone unfollow the Sone with the given ID.
 715          *
 716          * @param sone
 717          *            The local Sone that should unfollow another Sone
 718          * @param soneId
 719          *            The ID of the Sone being unfollowed
 720          */
 721         public void unfollowSone(LocalSone sone, String soneId) {
 722                 checkNotNull(sone, "sone must not be null");
 723                 checkNotNull(soneId, "soneId must not be null");
 724                 database.removeFriend(sone, soneId);
 725         }
 726
 727         /**
 728          * Sets the trust value of the given origin Sone for the target Sone.
 729          *
 730          * @param origin
 731          *            The origin Sone
 732          * @param target
 733          *            The target Sone
 734          * @param trustValue
 735          *            The trust value (from {@code -100} to {@code 100})
 736          */
 737         public void setTrust(Sone origin, Sone target, int trustValue) {
 738                 checkNotNull(origin, "origin must not be null");
 739                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 740                 checkNotNull(target, "target must not be null");
 741                 checkArgument((trustValue >= -100) && (trustValue <= 100), "trustValue must be within [-100, 100]");
 742                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), trustValue, preferences.getTrustComment());
 743         }
 744
 745         /**
 746          * Removes any trust assignment for the given target Sone.
 747          *
 748          * @param origin
 749          *            The trust origin
 750          * @param target
 751          *            The trust target
 752          */
 753         public void removeTrust(Sone origin, Sone target) {
 754                 checkNotNull(origin, "origin must not be null");
 755                 checkNotNull(target, "target must not be null");
 756                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 757                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), null, null);
 758         }
 759
 760         /**
 761          * Assigns the configured positive trust value for the given target.
 762          *
 763          * @param origin
 764          *            The trust origin
 765          * @param target
 766          *            The trust target
 767          */
 768         public void trustSone(Sone origin, Sone target) {
 769                 setTrust(origin, target, preferences.getPositiveTrust());
 770         }
 771
 772         /**
 773          * Assigns the configured negative trust value for the given target.
 774          *
 775          * @param origin
 776          *            The trust origin
 777          * @param target
 778          *            The trust target
 779          */
 780         public void distrustSone(Sone origin, Sone target) {
 781                 setTrust(origin, target, preferences.getNegativeTrust());
 782         }
 783
 784         /**
 785          * Removes the trust assignment for the given target.
 786          *
 787          * @param origin
 788          *            The trust origin
 789          * @param target
 790          *            The trust target
 791          */
 792         public void untrustSone(Sone origin, Sone target) {
 793                 removeTrust(origin, target);
 794         }
 795
 796         /**
 797          * Updates the stored Sone with the given Sone.
 798          *
 799          * @param sone
 800          *            The updated Sone
 801          */
 802         public void updateSone(Sone sone) {
 803                 updateSone(sone, false);
 804         }
 805
 806         /**
 807          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
 808          * {@code true}, an older Sone than the current Sone can be given to restore
 809          * an old state.
 810          *
 811          * @param sone
 812          *            The Sone to update
 813          * @param soneRescueMode
 814          *            {@code true} if the stored Sone should be updated regardless
 815          *            of the age of the given Sone
 816          */
 817         public void updateSone(final Sone sone, boolean soneRescueMode) {
 818                 Optional<Sone> storedSone = getSone(sone.getId());
 819                 if (storedSone.isPresent()) {
 820                         if (!soneRescueMode && !(sone.getTime() > storedSone.get().getTime())) {
 821                                 logger.log(Level.FINE, String.format("Downloaded Sone %s is not newer than stored Sone %s.", sone, storedSone));
 822                                 return;
 823                         }
 824                         List<Object> events =
 825                                         collectEventsForChangesInSone(storedSone.get(), sone);
 826                         database.storeSone(sone);
 827                         for (Object event : events) {
 828                                 eventBus.post(event);
 829                         }
 830                         sone.setOptions(storedSone.get().getOptions());
 831                         sone.setKnown(storedSone.get().isKnown());
 832                         sone.setStatus((sone.getTime() == 0) ? SoneStatus.unknown : SoneStatus.idle);
 833                         if (sone.isLocal()) {
 834                                 touchConfiguration();
 835                         }
 836                 }
 837         }
 838
 839         private List<Object> collectEventsForChangesInSone(Sone oldSone,
 840                         final Sone newSone) {
 841                 final List<Object> events = new ArrayList<Object>();
 842                 SoneChangeDetector soneChangeDetector = new SoneChangeDetector(
 843                                 oldSone);
 844                 soneChangeDetector.onNewPosts(new PostProcessor() {
 845                         @Override
 846                         public void processPost(Post post) {
 847                                 if (post.getTime() < getSoneFollowingTime(newSone)) {
 848                                         post.setKnown(true);
 849                                 } else if (!post.isKnown()) {
 850                                         events.add(new NewPostFoundEvent(post));
 851                                 }
 852                         }
 853                 });
 854                 soneChangeDetector.onRemovedPosts(new PostProcessor() {
 855                         @Override
 856                         public void processPost(Post post) {
 857                                 events.add(new PostRemovedEvent(post));
 858                         }
 859                 });
 860                 soneChangeDetector.onNewPostReplies(new PostReplyProcessor() {
 861                         @Override
 862                         public void processPostReply(PostReply postReply) {
 863                                 if (postReply.getTime() < getSoneFollowingTime(newSone)) {
 864                                         postReply.setKnown(true);
 865                                 } else if (!postReply.isKnown()) {
 866                                         events.add(new NewPostReplyFoundEvent(postReply));
 867                                 }
 868                         }
 869                 });
 870                 soneChangeDetector.onRemovedPostReplies(new PostReplyProcessor() {
 871                         @Override
 872                         public void processPostReply(PostReply postReply) {
 873                                 events.add(new PostReplyRemovedEvent(postReply));
 874                         }
 875                 });
 876                 soneChangeDetector.detectChanges(newSone);
 877                 return events;
 878         }
 879
 880         /**
 881          * Deletes the given Sone. This will remove the Sone from the
 882          * {@link #getLocalSones() local Sones}, stop its {@link SoneInserter} and
 883          * remove the context from its identity.
 884          *
 885          * @param sone
 886          *            The Sone to delete
 887          */
 888         public void deleteSone(Sone sone) {
 889                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
 890                         logger.log(Level.WARNING, String.format("Tried to delete Sone of non-own identity: %s", sone));
 891                         return;
 892                 }
 893                 if (!getLocalSones().contains(sone)) {
 894                         logger.log(Level.WARNING, String.format("Tried to delete non-local Sone: %s", sone));
 895                         return;
 896                 }
 897                 SoneInserter soneInserter = soneInserters.remove(sone);
 898                 soneInserter.stop();
 899                 database.removeSone(sone);
 900                 webOfTrustUpdater.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
 901                 webOfTrustUpdater.removeProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition");
 902                 try {
 903                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
 904                 } catch (ConfigurationException ce1) {
 905                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
 906                 }
 907         }
 908
 909         /**
 910          * Marks the given Sone as known. If the Sone was not {@link Post#isKnown()
 911          * known} before, a {@link MarkSoneKnownEvent} is fired.
 912          *
 913          * @param sone
 914          *            The Sone to mark as known
 915          */
 916         public void markSoneKnown(Sone sone) {
 917                 if (!sone.isKnown()) {
 918                         sone.setKnown(true);
 919                         database.setSoneKnown(sone);
 920                         eventBus.post(new MarkSoneKnownEvent(sone));
 921                         touchConfiguration();
 922                 }
 923         }
 924
 925         /**
 926          * Creates a new post.
 927          *
 928          * @param sone
 929          *            The Sone that creates the post
 930          * @param recipient
 931          *            The recipient Sone, or {@code null} if this post does not have
 932          *            a recipient
 933          * @param text
 934          *            The text of the post
 935          * @return The created post
 936          */
 937         public Post createPost(Sone sone, Optional<Sone> recipient, String text) {
 938                 checkNotNull(text, "text must not be null");
 939                 checkArgument(text.trim().length() > 0, "text must not be empty");
 940                 if (!sone.isLocal()) {
 941                         logger.log(Level.FINE, String.format("Tried to create post for non-local Sone: %s", sone));
 942                         return null;
 943                 }
 944                 PostBuilder postBuilder = database.newPostBuilder();
 945                 postBuilder.from(sone.getId()).randomId().currentTime().withText(text.trim());
 946                 if (recipient.isPresent()) {
 947                         postBuilder.to(recipient.get().getId());
 948                 }
 949                 final Post post = postBuilder.build();
 950                 database.storePost(post);
 951                 eventBus.post(new NewPostFoundEvent(post));
 952                 sone.addPost(post);
 953                 touchConfiguration();
 954                 localElementTicker.schedule(new MarkPostKnown(post), 10, TimeUnit.SECONDS);
 955                 return post;
 956         }
 957
 958         /**
 959          * Deletes the given post.
 960          *
 961          * @param post
 962          *            The post to delete
 963          */
 964         public void deletePost(Post post) {
 965                 if (!post.getSone().isLocal()) {
 966                         logger.log(Level.WARNING, String.format("Tried to delete post of non-local Sone: %s", post.getSone()));
 967                         return;
 968                 }
 969                 database.removePost(post);
 970                 eventBus.post(new PostRemovedEvent(post));
 971                 markPostKnown(post);
 972                 touchConfiguration();
 973         }
 974
 975         /**
 976          * Marks the given post as known, if it is currently not a known post
 977          * (according to {@link Post#isKnown()}).
 978          *
 979          * @param post
 980          *            The post to mark as known
 981          */
 982         public void markPostKnown(Post post) {
 983                 post.setKnown(true);
 984                 eventBus.post(new MarkPostKnownEvent(post));
 985                 touchConfiguration();
 986                 for (PostReply reply : getReplies(post.getId())) {
 987                         markReplyKnown(reply);
 988                 }
 989         }
 990
 991         public void bookmarkPost(Post post) {
 992                 database.bookmarkPost(post);
 993         }
 994
 995         /**
 996          * Removes the given post from the bookmarks.
 997          *
 998          * @param post
 999          *            The post to unbookmark
1000          */
1001         public void unbookmarkPost(Post post) {
1002                 database.unbookmarkPost(post);
1003         }
1004
1005         /**
1006          * Creates a new reply.
1007          *
1008          * @param sone
1009          *            The Sone that creates the reply
1010          * @param post
1011          *            The post that this reply refers to
1012          * @param text
1013          *            The text of the reply
1014          * @return The created reply
1015          */
1016         public PostReply createReply(Sone sone, Post post, String text) {
1017                 checkNotNull(text, "text must not be null");
1018                 checkArgument(text.trim().length() > 0, "text must not be empty");
1019                 if (!sone.isLocal()) {
1020                         logger.log(Level.FINE, String.format("Tried to create reply for non-local Sone: %s", sone));
1021                         return null;
1022                 }
1023                 PostReplyBuilder postReplyBuilder = postReplyBuilder();
1024                 postReplyBuilder.randomId().from(sone.getId()).to(post.getId()).currentTime().withText(text.trim());
1025                 final PostReply reply = postReplyBuilder.build();
1026                 database.storePostReply(reply);
1027                 eventBus.post(new NewPostReplyFoundEvent(reply));
1028                 sone.addReply(reply);
1029                 touchConfiguration();
1030                 localElementTicker.schedule(new MarkReplyKnown(reply), 10, TimeUnit.SECONDS);
1031                 return reply;
1032         }
1033
1034         /**
1035          * Deletes the given reply.
1036          *
1037          * @param reply
1038          *            The reply to delete
1039          */
1040         public void deleteReply(PostReply reply) {
1041                 Sone sone = reply.getSone();
1042                 if (!sone.isLocal()) {
1043                         logger.log(Level.FINE, String.format("Tried to delete non-local reply: %s", reply));
1044                         return;
1045                 }
1046                 database.removePostReply(reply);
1047                 markReplyKnown(reply);
1048                 sone.removeReply(reply);
1049                 touchConfiguration();
1050         }
1051
1052         /**
1053          * Marks the given reply as known, if it is currently not a known reply
1054          * (according to {@link Reply#isKnown()}).
1055          *
1056          * @param reply
1057          *            The reply to mark as known
1058          */
1059         public void markReplyKnown(PostReply reply) {
1060                 boolean previouslyKnown = reply.isKnown();
1061                 reply.setKnown(true);
1062                 eventBus.post(new MarkPostReplyKnownEvent(reply));
1063                 if (!previouslyKnown) {
1064                         touchConfiguration();
1065                 }
1066         }
1067
1068         /**
1069          * Creates a new album for the given Sone.
1070          *
1071          * @param sone
1072          *            The Sone to create the album for
1073          * @param parent
1074          *            The parent of the album (may be {@code null} to create a
1075          *            top-level album)
1076          * @return The new album
1077          */
1078         public Album createAlbum(Sone sone, Album parent) {
1079                 Album album = database.newAlbumBuilder().randomId().by(sone).build();
1080                 database.storeAlbum(album);
1081                 parent.addAlbum(album);
1082                 return album;
1083         }
1084
1085         /**
1086          * Deletes the given album. The owner of the album has to be a local Sone,
1087          * and the album has to be {@link Album#isEmpty() empty} to be deleted.
1088          *
1089          * @param album
1090          *            The album to remove
1091          */
1092         public void deleteAlbum(Album album) {
1093                 checkNotNull(album, "album must not be null");
1094                 checkArgument(album.getSone().isLocal(), "album’s Sone must be a local Sone");
1095                 if (!album.isEmpty()) {
1096                         return;
1097                 }
1098                 album.getParent().removeAlbum(album);
1099                 database.removeAlbum(album);
1100                 touchConfiguration();
1101         }
1102
1103         /**
1104          * Creates a new image.
1105          *
1106          * @param sone
1107          *            The Sone creating the image
1108          * @param album
1109          *            The album the image will be inserted into
1110          * @param temporaryImage
1111          *            The temporary image to create the image from
1112          * @return The newly created image
1113          */
1114         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1115                 checkNotNull(sone, "sone must not be null");
1116                 checkNotNull(album, "album must not be null");
1117                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1118                 checkArgument(sone.isLocal(), "sone must be a local Sone");
1119                 checkArgument(sone.equals(album.getSone()), "album must belong to the given Sone");
1120                 Image image = database.newImageBuilder().withId(temporaryImage.getId()).build().modify().setSone(sone).setCreationTime(System.currentTimeMillis()).update();
1121                 album.addImage(image);
1122                 database.storeImage(image);
1123                 imageInserter.insertImage(temporaryImage, image);
1124                 return image;
1125         }
1126
1127         /**
1128          * Deletes the given image. This method will also delete a matching
1129          * temporary image.
1130          *
1131          * @see #deleteTemporaryImage(String)
1132          * @param image
1133          *            The image to delete
1134          */
1135         public void deleteImage(Image image) {
1136                 checkNotNull(image, "image must not be null");
1137                 checkArgument(image.getSone().isLocal(), "image must belong to a local Sone");
1138                 deleteTemporaryImage(image.getId());
1139                 image.getAlbum().removeImage(image);
1140                 database.removeImage(image);
1141                 touchConfiguration();
1142         }
1143
1144         /**
1145          * Creates a new temporary image.
1146          *
1147          * @param mimeType
1148          *            The MIME type of the temporary image
1149          * @param imageData
1150          *            The encoded data of the image
1151          * @return The temporary image
1152          */
1153         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData) {
1154                 TemporaryImage temporaryImage = new TemporaryImage();
1155                 temporaryImage.setMimeType(mimeType).setImageData(imageData);
1156                 synchronized (temporaryImages) {
1157                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
1158                 }
1159                 return temporaryImage;
1160         }
1161
1162         /**
1163          * Deletes the temporary image with the given ID.
1164          *
1165          * @param imageId
1166          *            The ID of the temporary image to delete
1167          */
1168         public void deleteTemporaryImage(String imageId) {
1169                 checkNotNull(imageId, "imageId must not be null");
1170                 synchronized (temporaryImages) {
1171                         temporaryImages.remove(imageId);
1172                 }
1173                 Image image = getImage(imageId, false);
1174                 if (image != null) {
1175                         imageInserter.cancelImageInsert(image);
1176                 }
1177         }
1178
1179         /**
1180          * Notifies the core that the configuration, either of the core or of a
1181          * single local Sone, has changed, and that the configuration should be
1182          * saved.
1183          */
1184         public void touchConfiguration() {
1185                 lastConfigurationUpdate = System.currentTimeMillis();
1186         }
1187
1188         //
1189         // SERVICE METHODS
1190         //
1191
1192         /**
1193          * Starts the core.
1194          */
1195         @Override
1196         public void serviceStart() {
1197                 loadConfiguration();
1198                 updateChecker.start();
1199                 identityManager.start();
1200                 webOfTrustUpdater.init();
1201                 webOfTrustUpdater.start();
1202                 database.start();
1203         }
1204
1205         /**
1206          * {@inheritDoc}
1207          */
1208         @Override
1209         public void serviceRun() {
1210                 long lastSaved = System.currentTimeMillis();
1211                 while (!shouldStop()) {
1212                         sleep(1000);
1213                         long now = System.currentTimeMillis();
1214                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1215                                 saveConfiguration();
1216                                 lastSaved = now;
1217                         }
1218                 }
1219         }
1220
1221         /**
1222          * Stops the core.
1223          */
1224         @Override
1225         public void serviceStop() {
1226                 localElementTicker.shutdownNow();
1227                 synchronized (soneInserters) {
1228                         for (Entry<LocalSone, SoneInserter> soneInserter : soneInserters.entrySet()) {
1229                                 soneInserter.getValue().stop();
1230                         }
1231                 }
1232                 database.stop();
1233                 saveConfiguration();
1234                 webOfTrustUpdater.stop();
1235                 updateChecker.stop();
1236                 soneDownloader.stop();
1237                 soneDownloaders.shutdown();
1238                 identityManager.stop();
1239         }
1240
1241         //
1242         // PRIVATE METHODS
1243         //
1244
1245         /**
1246          * Saves the current options.
1247          */
1248         private void saveConfiguration() {
1249                 synchronized (configuration) {
1250                         if (storingConfiguration) {
1251                                 logger.log(Level.FINE, "Already storing configuration…");
1252                                 return;
1253                         }
1254                         storingConfiguration = true;
1255                 }
1256
1257                 /* store the options first. */
1258                 try {
1259                         preferences.saveTo(configuration);
1260
1261                         /* save known posts. */
1262                         database.save();
1263
1264                         /* now save it. */
1265                         configuration.save();
1266
1267                 } catch (ConfigurationException ce1) {
1268                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
1269                 } catch (DatabaseException de1) {
1270                         logger.log(Level.SEVERE, "Could not save database!", de1);
1271                 } finally {
1272                         synchronized (configuration) {
1273                                 storingConfiguration = false;
1274                         }
1275                 }
1276         }
1277
1278         /**
1279          * Loads the configuration.
1280          */
1281         private void loadConfiguration() {
1282                 new PreferencesLoader(preferences).loadFrom(configuration);
1283         }
1284
1285         /**
1286          * Notifies the core that a new {@link OwnIdentity} was added.
1287          *
1288          * @param ownIdentityAddedEvent
1289          *            The event
1290          */
1291         @Subscribe
1292         public void ownIdentityAdded(OwnIdentityAddedEvent ownIdentityAddedEvent) {
1293                 OwnIdentity ownIdentity = ownIdentityAddedEvent.ownIdentity();
1294                 logger.log(Level.FINEST, String.format("Adding OwnIdentity: %s", ownIdentity));
1295                 if (ownIdentity.hasContext("Sone")) {
1296                         addLocalSone(ownIdentity);
1297                 }
1298         }
1299
1300         /**
1301          * Notifies the core that an {@link OwnIdentity} was removed.
1302          *
1303          * @param ownIdentityRemovedEvent
1304          *            The event
1305          */
1306         @Subscribe
1307         public void ownIdentityRemoved(OwnIdentityRemovedEvent ownIdentityRemovedEvent) {
1308                 OwnIdentity ownIdentity = ownIdentityRemovedEvent.ownIdentity();
1309                 logger.log(Level.FINEST, String.format("Removing OwnIdentity: %s", ownIdentity));
1310                 trustedIdentities.removeAll(ownIdentity);
1311         }
1312
1313         /**
1314          * Notifies the core that a new {@link Identity} was added.
1315          *
1316          * @param identityAddedEvent
1317          *            The event
1318          */
1319         @Subscribe
1320         public void identityAdded(IdentityAddedEvent identityAddedEvent) {
1321                 Identity identity = identityAddedEvent.identity();
1322                 logger.log(Level.FINEST, String.format("Adding Identity: %s", identity));
1323                 trustedIdentities.put(identityAddedEvent.ownIdentity(), identity);
1324                 addRemoteSone(identity);
1325         }
1326
1327         /**
1328          * Notifies the core that an {@link Identity} was updated.
1329          *
1330          * @param identityUpdatedEvent
1331          *            The event
1332          */
1333         @Subscribe
1334         public void identityUpdated(IdentityUpdatedEvent identityUpdatedEvent) {
1335                 Identity identity = identityUpdatedEvent.identity();
1336                 final Sone sone = getRemoteSone(identity.getId());
1337                 if (sone.isLocal()) {
1338                         return;
1339                 }
1340                 sone.setLatestEdition(fromNullable(tryParse(identity.getProperty("Sone.LatestEdition"))).or(sone.getLatestEdition()));
1341                 soneDownloader.addSone(sone);
1342                 soneDownloaders.execute(soneDownloader.fetchSoneAction(sone));
1343         }
1344
1345         /**
1346          * Notifies the core that an {@link Identity} was removed.
1347          *
1348          * @param identityRemovedEvent
1349          *            The event
1350          */
1351         @Subscribe
1352         public void identityRemoved(IdentityRemovedEvent identityRemovedEvent) {
1353                 OwnIdentity ownIdentity = identityRemovedEvent.ownIdentity();
1354                 Identity identity = identityRemovedEvent.identity();
1355                 trustedIdentities.remove(ownIdentity, identity);
1356                 for (Entry<OwnIdentity, Collection<Identity>> trustedIdentity : trustedIdentities.asMap().entrySet()) {
1357                         if (trustedIdentity.getKey().equals(ownIdentity)) {
1358                                 continue;
1359                         }
1360                         if (trustedIdentity.getValue().contains(identity)) {
1361                                 return;
1362                         }
1363                 }
1364                 Optional<Sone> sone = getSone(identity.getId());
1365                 if (!sone.isPresent()) {
1366                         /* TODO - we don’t have the Sone anymore. should this happen? */
1367                         return;
1368                 }
1369                 database.removeSone(sone.get());
1370                 eventBus.post(new SoneRemovedEvent(sone.get()));
1371         }
1372
1373         @Subscribe
1374         public void soneInserted(SoneInsertedEvent soneInsertedEvent) {
1375                 Sone sone = soneInsertedEvent.sone();
1376                 database.setLastInsertFingerprint(sone, soneInsertedEvent.insertFingerprint());
1377                 webOfTrustUpdater.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(
1378                                 sone.getLatestEdition()));
1379         }
1380
1381         /**
1382          * Deletes the temporary image.
1383          *
1384          * @param imageInsertFinishedEvent
1385          *            The event
1386          */
1387         @Subscribe
1388         public void imageInsertFinished(ImageInsertFinishedEvent imageInsertFinishedEvent) {
1389                 logger.log(Level.WARNING, String.format("Image insert finished for %s: %s", imageInsertFinishedEvent.image(), imageInsertFinishedEvent.resultingUri()));
1390                 imageInsertFinishedEvent.image().modify().setKey(imageInsertFinishedEvent.resultingUri().toString()).update();
1391                 deleteTemporaryImage(imageInsertFinishedEvent.image().getId());
1392                 touchConfiguration();
1393         }
1394
1395         @VisibleForTesting
1396         class MarkPostKnown implements Runnable {
1397
1398                 private final Post post;
1399
1400                 public MarkPostKnown(Post post) {
1401                         this.post = post;
1402                 }
1403
1404                 @Override
1405                 public void run() {
1406                         markPostKnown(post);
1407                 }
1408
1409         }
1410
1411         @VisibleForTesting
1412         class MarkReplyKnown implements Runnable {
1413
1414                 private final PostReply postReply;
1415
1416                 public MarkReplyKnown(PostReply postReply) {
1417                         this.postReply = postReply;
1418                 }
1419
1420                 @Override
1421                 public void run() {
1422                         markReplyKnown(postReply);
1423                 }
1424
1425         }
1426
1427 }