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.of;
  21 import static com.google.common.base.Preconditions.checkArgument;
  22 import static com.google.common.base.Preconditions.checkNotNull;
  23 import static com.google.common.base.Predicates.not;
  24 import static com.google.common.collect.FluentIterable.from;
  25 import static net.pterodactylus.sone.data.Identified.GET_ID;
  26 import static net.pterodactylus.sone.data.Sone.LOCAL_SONE_FILTER;
  27
  28 import java.net.MalformedURLException;
  29 import java.util.Collection;
  30 import java.util.HashMap;
  31 import java.util.HashSet;
  32 import java.util.List;
  33 import java.util.Map;
  34 import java.util.Map.Entry;
  35 import java.util.Set;
  36 import java.util.concurrent.ExecutorService;
  37 import java.util.concurrent.Executors;
  38 import java.util.concurrent.ScheduledExecutorService;
  39 import java.util.concurrent.TimeUnit;
  40 import java.util.logging.Level;
  41 import java.util.logging.Logger;
  42
  43 import net.pterodactylus.sone.core.Options.DefaultOption;
  44 import net.pterodactylus.sone.core.Options.Option;
  45 import net.pterodactylus.sone.core.Options.OptionWatcher;
  46 import net.pterodactylus.sone.core.event.ImageInsertFinishedEvent;
  47 import net.pterodactylus.sone.core.event.MarkPostKnownEvent;
  48 import net.pterodactylus.sone.core.event.MarkPostReplyKnownEvent;
  49 import net.pterodactylus.sone.core.event.MarkSoneKnownEvent;
  50 import net.pterodactylus.sone.core.event.NewPostFoundEvent;
  51 import net.pterodactylus.sone.core.event.NewPostReplyFoundEvent;
  52 import net.pterodactylus.sone.core.event.NewSoneFoundEvent;
  53 import net.pterodactylus.sone.core.event.PostRemovedEvent;
  54 import net.pterodactylus.sone.core.event.PostReplyRemovedEvent;
  55 import net.pterodactylus.sone.core.event.SoneLockedEvent;
  56 import net.pterodactylus.sone.core.event.SoneRemovedEvent;
  57 import net.pterodactylus.sone.core.event.SoneUnlockedEvent;
  58 import net.pterodactylus.sone.data.Album;
  59 import net.pterodactylus.sone.data.Client;
  60 import net.pterodactylus.sone.data.Image;
  61 import net.pterodactylus.sone.data.Post;
  62 import net.pterodactylus.sone.data.PostReply;
  63 import net.pterodactylus.sone.data.Profile;
  64 import net.pterodactylus.sone.data.Profile.Field;
  65 import net.pterodactylus.sone.data.Reply;
  66 import net.pterodactylus.sone.data.Sone;
  67 import net.pterodactylus.sone.data.Sone.ShowCustomAvatars;
  68 import net.pterodactylus.sone.data.Sone.SoneStatus;
  69 import net.pterodactylus.sone.data.TemporaryImage;
  70 import net.pterodactylus.sone.database.Database;
  71 import net.pterodactylus.sone.database.DatabaseException;
  72 import net.pterodactylus.sone.database.ImageBuilder.ImageCreated;
  73 import net.pterodactylus.sone.database.PostBuilder;
  74 import net.pterodactylus.sone.database.PostBuilder.PostCreated;
  75 import net.pterodactylus.sone.database.PostReplyBuilder;
  76 import net.pterodactylus.sone.database.PostReplyBuilder.PostReplyCreated;
  77 import net.pterodactylus.sone.database.SoneProvider;
  78 import net.pterodactylus.sone.fcp.FcpInterface;
  79 import net.pterodactylus.sone.fcp.FcpInterface.FullAccessRequired;
  80 import net.pterodactylus.sone.freenet.wot.Identity;
  81 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  82 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  83 import net.pterodactylus.sone.freenet.wot.event.IdentityAddedEvent;
  84 import net.pterodactylus.sone.freenet.wot.event.IdentityRemovedEvent;
  85 import net.pterodactylus.sone.freenet.wot.event.IdentityUpdatedEvent;
  86 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityAddedEvent;
  87 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityRemovedEvent;
  88 import net.pterodactylus.sone.main.SonePlugin;
  89 import net.pterodactylus.sone.utils.IntegerRangePredicate;
  90 import net.pterodactylus.util.config.Configuration;
  91 import net.pterodactylus.util.config.ConfigurationException;
  92 import net.pterodactylus.util.logging.Logging;
  93 import net.pterodactylus.util.number.Numbers;
  94 import net.pterodactylus.util.service.AbstractService;
  95 import net.pterodactylus.util.thread.NamedThreadFactory;
  96
  97 import freenet.keys.FreenetURI;
  98
  99 import com.google.common.base.Optional;
 100 import com.google.common.base.Predicate;
 101 import com.google.common.base.Predicates;
 102 import com.google.common.collect.HashMultimap;
 103 import com.google.common.collect.ImmutableSet;
 104 import com.google.common.collect.Maps;
 105 import com.google.common.collect.Multimap;
 106 import com.google.common.collect.Multimaps;
 107 import com.google.common.eventbus.EventBus;
 108 import com.google.common.eventbus.Subscribe;
 109 import com.google.inject.Inject;
 110
 111 /**
 112  * The Sone core.
 113  *
 114  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 115  */
 116 public class Core extends AbstractService implements SoneProvider {
 117
 118         /** The logger. */
 119         private static final Logger logger = Logging.getLogger(Core.class);
 120
 121         /** The options. */
 122         private final Options options = new Options();
 123
 124         /** The preferences. */
 125         private final Preferences preferences = new Preferences(options);
 126
 127         /** The event bus. */
 128         private final EventBus eventBus;
 129
 130         /** The configuration. */
 131         private Configuration configuration;
 132
 133         /** Whether we’re currently saving the configuration. */
 134         private boolean storingConfiguration = false;
 135
 136         /** The identity manager. */
 137         private final IdentityManager identityManager;
 138
 139         /** Interface to freenet. */
 140         private final FreenetInterface freenetInterface;
 141
 142         /** The Sone downloader. */
 143         private final SoneDownloader soneDownloader;
 144
 145         /** The image inserter. */
 146         private final ImageInserter imageInserter;
 147
 148         /** Sone downloader thread-pool. */
 149         private final ExecutorService soneDownloaders = Executors.newFixedThreadPool(10, new NamedThreadFactory("Sone Downloader %2$d"));
 150
 151         /** The update checker. */
 152         private final UpdateChecker updateChecker;
 153
 154         /** The trust updater. */
 155         private final WebOfTrustUpdater webOfTrustUpdater;
 156
 157         /** The FCP interface. */
 158         private volatile FcpInterface fcpInterface;
 159
 160         /** The times Sones were followed. */
 161         private final Map<String, Long> soneFollowingTimes = new HashMap<String, Long>();
 162
 163         /** Locked local Sones. */
 164         /* synchronize on itself. */
 165         private final Set<Sone> lockedSones = new HashSet<Sone>();
 166
 167         /** Sone inserters. */
 168         /* synchronize access on this on sones. */
 169         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 170
 171         /** Sone rescuers. */
 172         /* synchronize access on this on sones. */
 173         private final Map<Sone, SoneRescuer> soneRescuers = new HashMap<Sone, SoneRescuer>();
 174
 175         /** All Sones. */
 176         /* synchronize access on this on itself. */
 177         private final Map<String, Sone> sones = new HashMap<String, Sone>();
 178
 179         /** All known Sones. */
 180         private final Set<String> knownSones = new HashSet<String>();
 181
 182         /** The post database. */
 183         private final Database database;
 184
 185         /** All bookmarked posts. */
 186         /* synchronize access on itself. */
 187         private final Set<String> bookmarkedPosts = new HashSet<String>();
 188
 189         /** Trusted identities, sorted by own identities. */
 190         private final Multimap<OwnIdentity, Identity> trustedIdentities = Multimaps.synchronizedSetMultimap(HashMultimap.<OwnIdentity, Identity>create());
 191
 192         /** All temporary images. */
 193         private final Map<String, TemporaryImage> temporaryImages = new HashMap<String, TemporaryImage>();
 194
 195         /** Ticker for threads that mark own elements as known. */
 196         private final ScheduledExecutorService localElementTicker = Executors.newScheduledThreadPool(1);
 197
 198         /** The time the configuration was last touched. */
 199         private volatile long lastConfigurationUpdate;
 200
 201         /**
 202          * Creates a new core.
 203          *
 204          * @param configuration
 205          *              The configuration of the core
 206          * @param freenetInterface
 207          *              The freenet interface
 208          * @param identityManager
 209          *              The identity manager
 210          * @param webOfTrustUpdater
 211          *              The WebOfTrust updater
 212          * @param eventBus
 213          *              The event bus
 214          * @param database
 215          *              The database
 216          */
 217         @Inject
 218         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager, WebOfTrustUpdater webOfTrustUpdater, EventBus eventBus, Database database) {
 219                 super("Sone Core");
 220                 this.configuration = configuration;
 221                 this.freenetInterface = freenetInterface;
 222                 this.identityManager = identityManager;
 223                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 224                 this.imageInserter = new ImageInserter(freenetInterface);
 225                 this.updateChecker = new UpdateChecker(eventBus, freenetInterface);
 226                 this.webOfTrustUpdater = webOfTrustUpdater;
 227                 this.eventBus = eventBus;
 228                 this.database = database;
 229         }
 230
 231         //
 232         // ACCESSORS
 233         //
 234
 235         /**
 236          * Sets the configuration to use. This will automatically save the current
 237          * configuration to the given configuration.
 238          *
 239          * @param configuration
 240          *              The new configuration to use
 241          */
 242         public void setConfiguration(Configuration configuration) {
 243                 this.configuration = configuration;
 244                 touchConfiguration();
 245         }
 246
 247         /**
 248          * Returns the options used by the core.
 249          *
 250          * @return The options of the core
 251          */
 252         public Preferences getPreferences() {
 253                 return preferences;
 254         }
 255
 256         /**
 257          * Returns the identity manager used by the core.
 258          *
 259          * @return The identity manager
 260          */
 261         public IdentityManager getIdentityManager() {
 262                 return identityManager;
 263         }
 264
 265         /**
 266          * Returns the update checker.
 267          *
 268          * @return The update checker
 269          */
 270         public UpdateChecker getUpdateChecker() {
 271                 return updateChecker;
 272         }
 273
 274         /**
 275          * Sets the FCP interface to use.
 276          *
 277          * @param fcpInterface
 278          *              The FCP interface to use
 279          */
 280         public void setFcpInterface(FcpInterface fcpInterface) {
 281                 this.fcpInterface = fcpInterface;
 282         }
 283
 284         public Database getDatabase() {
 285                 return database;
 286         }
 287
 288         /**
 289          * Returns the Sone rescuer for the given local Sone.
 290          *
 291          * @param sone
 292          *              The local Sone to get the rescuer for
 293          * @return The Sone rescuer for the given Sone
 294          */
 295         public SoneRescuer getSoneRescuer(Sone sone) {
 296                 checkNotNull(sone, "sone must not be null");
 297                 checkArgument(sone.isLocal(), "sone must be local");
 298                 synchronized (sones) {
 299                         SoneRescuer soneRescuer = soneRescuers.get(sone);
 300                         if (soneRescuer == null) {
 301                                 soneRescuer = new SoneRescuer(this, soneDownloader, sone);
 302                                 soneRescuers.put(sone, soneRescuer);
 303                                 soneRescuer.start();
 304                         }
 305                         return soneRescuer;
 306                 }
 307         }
 308
 309         /**
 310          * Returns whether the given Sone is currently locked.
 311          *
 312          * @param sone
 313          *              The sone to check
 314          * @return {@code true} if the Sone is locked, {@code false} if it is not
 315          */
 316         public boolean isLocked(Sone sone) {
 317                 synchronized (lockedSones) {
 318                         return lockedSones.contains(sone);
 319                 }
 320         }
 321
 322         @Override
 323         public Collection<Sone> getSones() {
 324                 synchronized (sones) {
 325                         return ImmutableSet.copyOf(sones.values());
 326                 }
 327         }
 328
 329         @Override
 330         public Optional<Sone> getSone(String id) {
 331                 synchronized (sones) {
 332                         return Optional.fromNullable(sones.get(id));
 333                 }
 334         }
 335
 336         @Override
 337         public Collection<Sone> getLocalSones() {
 338                 synchronized (sones) {
 339                         return from(sones.values()).filter(new Predicate<Sone>() {
 340
 341                                 @Override
 342                                 public boolean apply(Sone sone) {
 343                                         return sone.isLocal();
 344                                 }
 345                         }).toSet();
 346                 }
 347         }
 348
 349         /**
 350          * Returns the local Sone with the given ID, optionally creating a new Sone.
 351          *
 352          * @param id
 353          *              The ID of the Sone
 354          * @return The Sone with the given ID, or {@code null}
 355          */
 356         public Optional<Sone> getLocalSone(String id) {
 357                 return from(database.getSone(id).asSet()).firstMatch(LOCAL_SONE_FILTER);
 358         }
 359
 360         @Override
 361         public Collection<Sone> getRemoteSones() {
 362                 synchronized (sones) {
 363                         return from(sones.values()).filter(new Predicate<Sone>() {
 364
 365                                 @Override
 366                                 public boolean apply(Sone sone) {
 367                                         return !sone.isLocal();
 368                                 }
 369                         }).toSet();
 370                 }
 371         }
 372
 373         /**
 374          * Returns the remote Sone with the given ID.
 375          *
 376          * @param id
 377          *              The ID of the remote Sone to get
 378          * @return The Sone with the given ID
 379          */
 380         public Optional<Sone> getRemoteSone(String id) {
 381                 return from(database.getSone(id).asSet()).firstMatch(not(LOCAL_SONE_FILTER));
 382         }
 383
 384         /**
 385          * Returns whether the given Sone has been modified.
 386          *
 387          * @param sone
 388          *              The Sone to check for modifications
 389          * @return {@code true} if a modification has been detected in the Sone, {@code
 390          *         false} otherwise
 391          */
 392         public boolean isModifiedSone(Sone sone) {
 393                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 394         }
 395
 396         /**
 397          * Returns the time when the given was first followed by any local Sone.
 398          *
 399          * @param sone
 400          *              The Sone to get the time for
 401          * @return The time (in milliseconds since Jan 1, 1970) the Sone has first been
 402          *         followed, or {@link Long#MAX_VALUE}
 403          */
 404         public long getSoneFollowingTime(Sone sone) {
 405                 synchronized (soneFollowingTimes) {
 406                         return Optional.fromNullable(soneFollowingTimes.get(sone.getId())).or(Long.MAX_VALUE);
 407                 }
 408         }
 409
 410         public Optional<PostReply> getPostReply(String replyId) {
 411                 return database.getPostReply(replyId);
 412         }
 413
 414         public List<PostReply> getReplies(final String postId) {
 415                 return database.getReplies(postId);
 416         }
 417
 418         /**
 419          * Returns all Sones that have liked the given post.
 420          *
 421          * @param post
 422          *              The post to get the liking Sones for
 423          * @return The Sones that like the given post
 424          */
 425         public Set<Sone> getLikes(Post post) {
 426                 Set<Sone> sones = new HashSet<Sone>();
 427                 for (Sone sone : getSones()) {
 428                         if (sone.getLikedPostIds().contains(post.getId())) {
 429                                 sones.add(sone);
 430                         }
 431                 }
 432                 return sones;
 433         }
 434
 435         /**
 436          * Returns all Sones that have liked the given reply.
 437          *
 438          * @param reply
 439          *              The reply to get the liking Sones for
 440          * @return The Sones that like the given reply
 441          */
 442         public Set<Sone> getLikes(PostReply reply) {
 443                 Set<Sone> sones = new HashSet<Sone>();
 444                 for (Sone sone : getSones()) {
 445                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 446                                 sones.add(sone);
 447                         }
 448                 }
 449                 return sones;
 450         }
 451
 452         /**
 453          * Returns whether the given post is bookmarked.
 454          *
 455          * @param post
 456          *              The post to check
 457          * @return {@code true} if the given post is bookmarked, {@code false}
 458          *         otherwise
 459          */
 460         public boolean isBookmarked(Post post) {
 461                 return isPostBookmarked(post.getId());
 462         }
 463
 464         /**
 465          * Returns whether the post with the given ID is bookmarked.
 466          *
 467          * @param id
 468          *              The ID of the post to check
 469          * @return {@code true} if the post with the given ID is bookmarked, {@code
 470          *         false} otherwise
 471          */
 472         public boolean isPostBookmarked(String id) {
 473                 synchronized (bookmarkedPosts) {
 474                         return bookmarkedPosts.contains(id);
 475                 }
 476         }
 477
 478         /**
 479          * Returns all currently known bookmarked posts.
 480          *
 481          * @return All bookmarked posts
 482          */
 483         public Set<Post> getBookmarkedPosts() {
 484                 Set<Post> posts = new HashSet<Post>();
 485                 synchronized (bookmarkedPosts) {
 486                         for (String bookmarkedPostId : bookmarkedPosts) {
 487                                 Optional<Post> post = database.getPost(bookmarkedPostId);
 488                                 if (post.isPresent()) {
 489                                         posts.add(post.get());
 490                                 }
 491                         }
 492                 }
 493                 return posts;
 494         }
 495
 496         public Optional<Album> getAlbum(String albumId) {
 497                 return database.getAlbum(albumId);
 498         }
 499
 500         public Optional<Image> getImage(String imageId) {
 501                 return database.getImage(imageId);
 502         }
 503
 504         /**
 505          * Returns the temporary image with the given ID.
 506          *
 507          * @param imageId
 508          *              The ID of the temporary image
 509          * @return The temporary image, or {@code null} if there is no temporary image
 510          *         with the given ID
 511          */
 512         public TemporaryImage getTemporaryImage(String imageId) {
 513                 synchronized (temporaryImages) {
 514                         return temporaryImages.get(imageId);
 515                 }
 516         }
 517
 518         //
 519         // ACTIONS
 520         //
 521
 522         /**
 523          * Locks the given Sone. A locked Sone will not be inserted by {@link
 524          * SoneInserter} until it is {@link #unlockSone(Sone) unlocked} again.
 525          *
 526          * @param sone
 527          *              The sone to lock
 528          */
 529         public void lockSone(Sone sone) {
 530                 synchronized (lockedSones) {
 531                         if (lockedSones.add(sone)) {
 532                                 eventBus.post(new SoneLockedEvent(sone));
 533                         }
 534                 }
 535         }
 536
 537         /**
 538          * Unlocks the given Sone.
 539          *
 540          * @param sone
 541          *              The sone to unlock
 542          * @see #lockSone(Sone)
 543          */
 544         public void unlockSone(Sone sone) {
 545                 synchronized (lockedSones) {
 546                         if (lockedSones.remove(sone)) {
 547                                 eventBus.post(new SoneUnlockedEvent(sone));
 548                         }
 549                 }
 550         }
 551
 552         /**
 553          * Adds a local Sone from the given own identity.
 554          *
 555          * @param ownIdentity
 556          *              The own identity to create a Sone from
 557          * @return The added (or already existing) Sone
 558          */
 559         public Sone addLocalSone(OwnIdentity ownIdentity) {
 560                 if (ownIdentity == null) {
 561                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 562                         return null;
 563                 }
 564                 logger.info(String.format("Adding Sone from OwnIdentity: %s", ownIdentity));
 565                 synchronized (sones) {
 566                         final Sone sone;
 567                         try {
 568                                 sone = database.newSoneBuilder().by(ownIdentity).local().build().setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 569                         } catch (MalformedURLException mue1) {
 570                                 logger.log(Level.SEVERE, String.format("Could not convert the Identity’s URIs to Freenet URIs: %s, %s", ownIdentity.getInsertUri(), ownIdentity.getRequestUri()), mue1);
 571                                 return null;
 572                         }
 573                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 574                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 575                         sone.setKnown(true);
 576                         /* TODO - load posts ’n stuff */
 577                         sones.put(ownIdentity.getId(), sone);
 578                         final SoneInserter soneInserter = new SoneInserter(this, eventBus, freenetInterface, sone);
 579                         soneInserters.put(sone, soneInserter);
 580                         sone.setStatus(SoneStatus.idle);
 581                         loadSone(sone);
 582                         soneInserter.start();
 583                         return sone;
 584                 }
 585         }
 586
 587         /**
 588          * Creates a new Sone for the given own identity.
 589          *
 590          * @param ownIdentity
 591          *              The own identity to create a Sone for
 592          * @return The created Sone
 593          */
 594         public Sone createSone(OwnIdentity ownIdentity) {
 595                 if (!webOfTrustUpdater.addContextWait(ownIdentity, "Sone")) {
 596                         logger.log(Level.SEVERE, String.format("Could not add “Sone” context to own identity: %s", ownIdentity));
 597                         return null;
 598                 }
 599                 Sone sone = addLocalSone(ownIdentity);
 600                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 601                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
 602                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
 603                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
 604                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
 605                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 606
 607                 followSone(sone, "nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI");
 608                 touchConfiguration();
 609                 return sone;
 610         }
 611
 612         /**
 613          * Adds the Sone of the given identity.
 614          *
 615          * @param identity
 616          *              The identity whose Sone to add
 617          * @return The added or already existing Sone
 618          */
 619         public Sone addRemoteSone(Identity identity) {
 620                 if (identity == null) {
 621                         logger.log(Level.WARNING, "Given Identity is null!");
 622                         return null;
 623                 }
 624                 synchronized (sones) {
 625                         final Sone sone = database.newSoneBuilder().by(identity).build();
 626                         if (sone.isLocal()) {
 627                                 return sone;
 628                         }
 629                         sone.setIdentity(identity);
 630                         boolean newSone = sone.getRequestUri() == null;
 631                         sone.setRequestUri(SoneUri.create(identity.getRequestUri()));
 632                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 633                         if (newSone) {
 634                                 synchronized (knownSones) {
 635                                         newSone = !knownSones.contains(sone.getId());
 636                                 }
 637                                 sone.setKnown(!newSone);
 638                                 if (newSone) {
 639                                         eventBus.post(new NewSoneFoundEvent(sone));
 640                                         for (Sone localSone : getLocalSones()) {
 641                                                 if (localSone.getOptions().getBooleanOption("AutoFollow").get()) {
 642                                                         followSone(localSone, sone.getId());
 643                                                 }
 644                                         }
 645                                 }
 646                         }
 647                         soneDownloader.addSone(sone);
 648                         soneDownloaders.execute(new Runnable() {
 649
 650                                 @Override
 651                                 @SuppressWarnings("synthetic-access")
 652                                 public void run() {
 653                                         soneDownloader.fetchSone(sone, sone.getRequestUri());
 654                                 }
 655
 656                         });
 657                         return sone;
 658                 }
 659         }
 660
 661         /**
 662          * Lets the given local Sone follow the Sone with the given ID.
 663          *
 664          * @param sone
 665          *              The local Sone that should follow another Sone
 666          * @param soneId
 667          *              The ID of the Sone to follow
 668          */
 669         public void followSone(Sone sone, String soneId) {
 670                 checkNotNull(sone, "sone must not be null");
 671                 checkNotNull(soneId, "soneId must not be null");
 672                 sone.addFriend(soneId);
 673                 synchronized (soneFollowingTimes) {
 674                         if (!soneFollowingTimes.containsKey(soneId)) {
 675                                 long now = System.currentTimeMillis();
 676                                 soneFollowingTimes.put(soneId, now);
 677                                 Optional<Sone> followedSone = getSone(soneId);
 678                                 if (!followedSone.isPresent()) {
 679                                         return;
 680                                 }
 681                                 for (Post post : followedSone.get().getPosts()) {
 682                                         if (post.getTime() < now) {
 683                                                 markPostKnown(post);
 684                                         }
 685                                 }
 686                                 for (PostReply reply : followedSone.get().getReplies()) {
 687                                         if (reply.getTime() < now) {
 688                                                 markReplyKnown(reply);
 689                                         }
 690                                 }
 691                         }
 692                 }
 693                 touchConfiguration();
 694         }
 695
 696         /**
 697          * Lets the given local Sone unfollow the Sone with the given ID.
 698          *
 699          * @param sone
 700          *              The local Sone that should unfollow another Sone
 701          * @param soneId
 702          *              The ID of the Sone being unfollowed
 703          */
 704         public void unfollowSone(Sone sone, String soneId) {
 705                 checkNotNull(sone, "sone must not be null");
 706                 checkNotNull(soneId, "soneId must not be null");
 707                 sone.removeFriend(soneId);
 708                 boolean unfollowedSoneStillFollowed = false;
 709                 for (Sone localSone : getLocalSones()) {
 710                         unfollowedSoneStillFollowed |= localSone.hasFriend(soneId);
 711                 }
 712                 if (!unfollowedSoneStillFollowed) {
 713                         synchronized (soneFollowingTimes) {
 714                                 soneFollowingTimes.remove(soneId);
 715                         }
 716                 }
 717                 touchConfiguration();
 718         }
 719
 720         /**
 721          * Sets the trust value of the given origin Sone for the target Sone.
 722          *
 723          * @param origin
 724          *              The origin Sone
 725          * @param target
 726          *              The target Sone
 727          * @param trustValue
 728          *              The trust value (from {@code -100} to {@code 100})
 729          */
 730         public void setTrust(Sone origin, Sone target, int trustValue) {
 731                 checkNotNull(origin, "origin must not be null");
 732                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 733                 checkNotNull(target, "target must not be null");
 734                 checkArgument((trustValue >= -100) && (trustValue <= 100), "trustValue must be within [-100, 100]");
 735                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), trustValue, preferences.getTrustComment());
 736         }
 737
 738         /**
 739          * Removes any trust assignment for the given target Sone.
 740          *
 741          * @param origin
 742          *              The trust origin
 743          * @param target
 744          *              The trust target
 745          */
 746         public void removeTrust(Sone origin, Sone target) {
 747                 checkNotNull(origin, "origin must not be null");
 748                 checkNotNull(target, "target must not be null");
 749                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 750                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), null, null);
 751         }
 752
 753         /**
 754          * Assigns the configured positive trust value for the given target.
 755          *
 756          * @param origin
 757          *              The trust origin
 758          * @param target
 759          *              The trust target
 760          */
 761         public void trustSone(Sone origin, Sone target) {
 762                 setTrust(origin, target, preferences.getPositiveTrust());
 763         }
 764
 765         /**
 766          * Assigns the configured negative trust value for the given target.
 767          *
 768          * @param origin
 769          *              The trust origin
 770          * @param target
 771          *              The trust target
 772          */
 773         public void distrustSone(Sone origin, Sone target) {
 774                 setTrust(origin, target, preferences.getNegativeTrust());
 775         }
 776
 777         /**
 778          * Removes the trust assignment for the given target.
 779          *
 780          * @param origin
 781          *              The trust origin
 782          * @param target
 783          *              The trust target
 784          */
 785         public void untrustSone(Sone origin, Sone target) {
 786                 removeTrust(origin, target);
 787         }
 788
 789         /**
 790          * Updates the stored Sone with the given Sone.
 791          *
 792          * @param sone
 793          *              The updated Sone
 794          */
 795         public void updateSone(Sone sone) {
 796                 updateSone(sone, false);
 797         }
 798
 799         /**
 800          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
 801          * {@code true}, an older Sone than the current Sone can be given to restore an
 802          * old state.
 803          *
 804          * @param sone
 805          *              The Sone to update
 806          * @param soneRescueMode
 807          *              {@code true} if the stored Sone should be updated regardless of the age of
 808          *              the given Sone
 809          */
 810         public void updateSone(Sone sone, boolean soneRescueMode) {
 811                 Optional<Sone> storedSone = getSone(sone.getId());
 812                 if (storedSone.isPresent()) {
 813                         if (!soneRescueMode && !(sone.getTime() > storedSone.get().getTime())) {
 814                                 logger.log(Level.FINE, String.format("Downloaded Sone %s is not newer than stored Sone %s.", sone, storedSone));
 815                                 return;
 816                         }
 817                         /* find removed posts. */
 818                         Collection<Post> existingPosts = database.getPosts(sone.getId());
 819                         for (Post oldPost : existingPosts) {
 820                                 if (!sone.getPosts().contains(oldPost)) {
 821                                         eventBus.post(new PostRemovedEvent(oldPost));
 822                                 }
 823                         }
 824                         /* find new posts. */
 825                         for (Post newPost : sone.getPosts()) {
 826                                 if (existingPosts.contains(newPost)) {
 827                                         continue;
 828                                 }
 829                                 if (newPost.getTime() < getSoneFollowingTime(sone)) {
 830                                         newPost.setKnown(true);
 831                                 } else if (!newPost.isKnown()) {
 832                                         eventBus.post(new NewPostFoundEvent(newPost));
 833                                 }
 834                         }
 835                         /* store posts. */
 836                         database.storePosts(sone, sone.getPosts());
 837                         if (!soneRescueMode) {
 838                                 for (PostReply reply : storedSone.get().getReplies()) {
 839                                         if (!sone.getReplies().contains(reply)) {
 840                                                 eventBus.post(new PostReplyRemovedEvent(reply));
 841                                         }
 842                                 }
 843                         }
 844                         Set<PostReply> storedReplies = storedSone.get().getReplies();
 845                         for (PostReply reply : sone.getReplies()) {
 846                                 if (storedReplies.contains(reply)) {
 847                                         continue;
 848                                 }
 849                                 if (reply.getTime() < getSoneFollowingTime(sone)) {
 850                                         reply.setKnown(true);
 851                                 } else if (!reply.isKnown()) {
 852                                         eventBus.post(new NewPostReplyFoundEvent(reply));
 853                                 }
 854                         }
 855                         database.storePostReplies(sone, sone.getReplies());
 856                         for (Album album : storedSone.get().getRootAlbum().getAlbums()) {
 857                                 database.removeAlbum(album);
 858                                 for (Image image : album.getImages()) {
 859                                         database.removeImage(image);
 860                                 }
 861                         }
 862                         for (Album album : sone.getRootAlbum().getAlbums()) {
 863                                 database.storeAlbum(album);
 864                                 for (Image image : album.getImages()) {
 865                                         database.storeImage(image);
 866                                 }
 867                         }
 868                         synchronized (sones) {
 869                                 sone.setOptions(storedSone.get().getOptions());
 870                                 sone.setKnown(storedSone.get().isKnown());
 871                                 sone.setStatus((sone.getTime() == 0) ? SoneStatus.unknown : SoneStatus.idle);
 872                                 if (sone.isLocal()) {
 873                                         soneInserters.get(storedSone.get()).setSone(sone);
 874                                         touchConfiguration();
 875                                 }
 876                                 sones.put(sone.getId(), sone);
 877                         }
 878                 }
 879         }
 880
 881         /**
 882          * Deletes the given Sone. This will remove the Sone from the {@link
 883          * #getLocalSones() local Sones}, stop its {@link SoneInserter} and remove the
 884          * context from its identity.
 885          *
 886          * @param sone
 887          *              The Sone to delete
 888          */
 889         public void deleteSone(Sone sone) {
 890                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
 891                         logger.log(Level.WARNING, String.format("Tried to delete Sone of non-own identity: %s", sone));
 892                         return;
 893                 }
 894                 synchronized (sones) {
 895                         if (!getLocalSones().contains(sone)) {
 896                                 logger.log(Level.WARNING, String.format("Tried to delete non-local Sone: %s", sone));
 897                                 return;
 898                         }
 899                         sones.remove(sone.getId());
 900                         SoneInserter soneInserter = soneInserters.remove(sone);
 901                         soneInserter.stop();
 902                 }
 903                 webOfTrustUpdater.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
 904                 webOfTrustUpdater.removeProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition");
 905                 try {
 906                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
 907                 } catch (ConfigurationException ce1) {
 908                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
 909                 }
 910         }
 911
 912         /**
 913          * Marks the given Sone as known. If the Sone was not {@link Post#isKnown()
 914          * known} before, a {@link MarkSoneKnownEvent} is fired.
 915          *
 916          * @param sone
 917          *              The Sone to mark as known
 918          */
 919         public void markSoneKnown(Sone sone) {
 920                 if (!sone.isKnown()) {
 921                         sone.setKnown(true);
 922                         synchronized (knownSones) {
 923                                 knownSones.add(sone.getId());
 924                         }
 925                         eventBus.post(new MarkSoneKnownEvent(sone));
 926                         touchConfiguration();
 927                 }
 928         }
 929
 930         /**
 931          * Loads and updates the given Sone from the configuration. If any error is
 932          * encountered, loading is aborted and the given Sone is not changed.
 933          *
 934          * @param sone
 935          *              The Sone to load and update
 936          */
 937         public void loadSone(Sone sone) {
 938                 if (!sone.isLocal()) {
 939                         logger.log(Level.FINE, String.format("Tried to load non-local Sone: %s", sone));
 940                         return;
 941                 }
 942                 logger.info(String.format("Loading local Sone: %s", sone));
 943
 944                 /* initialize options. */
 945                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 946                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
 947                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
 948                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
 949                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
 950                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 951
 952                 /* load Sone. */
 953                 String sonePrefix = "Sone/" + sone.getId();
 954                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
 955                 if (soneTime == null) {
 956                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
 957                         return;
 958                 }
 959                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
 960
 961                 /* load profile. */
 962                 Profile profile = new Profile(sone);
 963                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
 964                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
 965                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
 966                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
 967                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
 968                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
 969
 970                 /* load profile fields. */
 971                 while (true) {
 972                         String fieldPrefix = sonePrefix + "/Profile/Fields/" + profile.getFields().size();
 973                         String fieldName = configuration.getStringValue(fieldPrefix + "/Name").getValue(null);
 974                         if (fieldName == null) {
 975                                 break;
 976                         }
 977                         String fieldValue = configuration.getStringValue(fieldPrefix + "/Value").getValue("");
 978                         profile.addField(fieldName).setValue(fieldValue);
 979                 }
 980
 981                 /* load posts. */
 982                 Set<Post> posts = new HashSet<Post>();
 983                 while (true) {
 984                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
 985                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
 986                         if (postId == null) {
 987                                 break;
 988                         }
 989                         String postRecipientId = configuration.getStringValue(postPrefix + "/Recipient").getValue(null);
 990                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
 991                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
 992                         if ((postTime == 0) || (postText == null)) {
 993                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
 994                                 return;
 995                         }
 996                         PostBuilder postBuilder = sone.newPostBuilder().withId(postId).withTime(postTime).withText(postText);
 997                         if ((postRecipientId != null) && (postRecipientId.length() == 43)) {
 998                                 postBuilder.to(of(postRecipientId));
 999                         }
1000                         posts.add(postBuilder.build(Optional.<PostCreated>absent()));
1001                 }
1002
1003                 /* load replies. */
1004                 Set<PostReply> replies = new HashSet<PostReply>();
1005                 while (true) {
1006                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
1007                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
1008                         if (replyId == null) {
1009                                 break;
1010                         }
1011                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
1012                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
1013                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
1014                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
1015                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1016                                 return;
1017                         }
1018                         PostReplyBuilder postReplyBuilder = sone.newPostReplyBuilder(postId).withId(replyId).withTime(replyTime).withText(replyText);
1019                         replies.add(postReplyBuilder.build(Optional.<PostReplyCreated>absent()));
1020                 }
1021
1022                 /* load post likes. */
1023                 Set<String> likedPostIds = new HashSet<String>();
1024                 while (true) {
1025                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
1026                         if (likedPostId == null) {
1027                                 break;
1028                         }
1029                         likedPostIds.add(likedPostId);
1030                 }
1031
1032                 /* load reply likes. */
1033                 Set<String> likedReplyIds = new HashSet<String>();
1034                 while (true) {
1035                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
1036                         if (likedReplyId == null) {
1037                                 break;
1038                         }
1039                         likedReplyIds.add(likedReplyId);
1040                 }
1041
1042                 /* load friends. */
1043                 Set<String> friends = new HashSet<String>();
1044                 while (true) {
1045                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1046                         if (friendId == null) {
1047                                 break;
1048                         }
1049                         friends.add(friendId);
1050                 }
1051
1052                 /* load albums. */
1053                 Map<String, Album> albums = Maps.newHashMap();
1054                 int albumCounter = 0;
1055                 while (true) {
1056                         String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1057                         String albumId = configuration.getStringValue(albumPrefix + "/ID").getValue(null);
1058                         if (albumId == null) {
1059                                 break;
1060                         }
1061                         String albumTitle = configuration.getStringValue(albumPrefix + "/Title").getValue(null);
1062                         String albumDescription = configuration.getStringValue(albumPrefix + "/Description").getValue(null);
1063                         String albumParentId = configuration.getStringValue(albumPrefix + "/Parent").getValue(null);
1064                         String albumImageId = configuration.getStringValue(albumPrefix + "/AlbumImage").getValue(null);
1065                         if ((albumTitle == null) || (albumDescription == null)) {
1066                                 logger.log(Level.WARNING, "Invalid album found, aborting load!");
1067                                 return;
1068                         }
1069                         Album parentAlbum = sone.getRootAlbum();
1070                         if (albumParentId != null) {
1071                                 parentAlbum = albums.get(albumParentId);
1072                         }
1073                         Album album = parentAlbum.newAlbumBuilder().withId(albumId).build().modify().setTitle(albumTitle).setDescription(albumDescription).setAlbumImage(albumImageId).update();
1074                         albums.put(album.getId(), album);
1075                 }
1076
1077                 /* load images. */
1078                 int imageCounter = 0;
1079                 while (true) {
1080                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1081                         String imageId = configuration.getStringValue(imagePrefix + "/ID").getValue(null);
1082                         if (imageId == null) {
1083                                 break;
1084                         }
1085                         String albumId = configuration.getStringValue(imagePrefix + "/Album").getValue(null);
1086                         String key = configuration.getStringValue(imagePrefix + "/Key").getValue(null);
1087                         String title = configuration.getStringValue(imagePrefix + "/Title").getValue(null);
1088                         String description = configuration.getStringValue(imagePrefix + "/Description").getValue(null);
1089                         Long creationTime = configuration.getLongValue(imagePrefix + "/CreationTime").getValue(null);
1090                         Integer width = configuration.getIntValue(imagePrefix + "/Width").getValue(null);
1091                         Integer height = configuration.getIntValue(imagePrefix + "/Height").getValue(null);
1092                         if ((albumId == null) || (key == null) || (title == null) || (description == null) || (creationTime == null) || (width == null) || (height == null)) {
1093                                 logger.log(Level.WARNING, "Invalid image found, aborting load!");
1094                                 return;
1095                         }
1096                         Album album = albums.get(albumId);
1097                         if (album == null) {
1098                                 logger.log(Level.WARNING, "Invalid album image encountered, aborting load!");
1099                                 return;
1100                         }
1101                         album.newImageBuilder().withId(imageId).created(creationTime).at(key).sized(width, height).build(Optional.<ImageCreated>absent()).modify().setTitle(title).setDescription(description).update();
1102                 }
1103
1104                 /* load avatar. */
1105                 String avatarId = configuration.getStringValue(sonePrefix + "/Profile/Avatar").getValue(null);
1106                 if (avatarId != null) {
1107                         profile.setAvatar(getImage(avatarId).orNull());
1108                 }
1109
1110                 /* load options. */
1111                 sone.getOptions().getBooleanOption("AutoFollow").set(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
1112                 sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").set(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
1113                 sone.getOptions().getBooleanOption("ShowNotification/NewSones").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").getValue(null));
1114                 sone.getOptions().getBooleanOption("ShowNotification/NewPosts").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").getValue(null));
1115                 sone.getOptions().getBooleanOption("ShowNotification/NewReplies").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").getValue(null));
1116                 sone.getOptions().<ShowCustomAvatars>getEnumOption("ShowCustomAvatars").set(ShowCustomAvatars.valueOf(configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").getValue(ShowCustomAvatars.NEVER.name())));
1117
1118                 /* if we’re still here, Sone was loaded successfully. */
1119                 synchronized (sone) {
1120                         sone.setTime(soneTime);
1121                         sone.setProfile(profile);
1122                         sone.setPosts(posts);
1123                         sone.setReplies(replies);
1124                         sone.setLikePostIds(likedPostIds);
1125                         sone.setLikeReplyIds(likedReplyIds);
1126                         for (String friendId : friends) {
1127                                 followSone(sone, friendId);
1128                         }
1129                         for (Album album : sone.getRootAlbum().getAlbums()) {
1130                                 album.remove();
1131                         }
1132                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1133                 }
1134                 synchronized (knownSones) {
1135                         for (String friend : friends) {
1136                                 knownSones.add(friend);
1137                         }
1138                 }
1139                 database.storePosts(sone, posts);
1140                 for (Post post : posts) {
1141                         post.setKnown(true);
1142                 }
1143                 database.storePostReplies(sone, replies);
1144                 for (PostReply reply : replies) {
1145                         reply.setKnown(true);
1146                 }
1147
1148                 logger.info(String.format("Sone loaded successfully: %s", sone));
1149         }
1150
1151         /**
1152          * Deletes the given post.
1153          *
1154          * @param post
1155          *              The post to delete
1156          */
1157         public void deletePost(Post post) {
1158                 if (!post.getSone().isLocal()) {
1159                         logger.log(Level.WARNING, String.format("Tried to delete post of non-local Sone: %s", post.getSone()));
1160                         return;
1161                 }
1162                 database.removePost(post);
1163                 eventBus.post(new PostRemovedEvent(post));
1164                 markPostKnown(post);
1165                 touchConfiguration();
1166         }
1167
1168         /**
1169          * Marks the given post as known, if it is currently not a known post
1170          * (according to {@link Post#isKnown()}).
1171          *
1172          * @param post
1173          *              The post to mark as known
1174          */
1175         public void markPostKnown(Post post) {
1176                 post.setKnown(true);
1177                 eventBus.post(new MarkPostKnownEvent(post));
1178                 touchConfiguration();
1179                 for (PostReply reply : getReplies(post.getId())) {
1180                         markReplyKnown(reply);
1181                 }
1182         }
1183
1184         /**
1185          * Bookmarks the post with the given ID.
1186          *
1187          * @param id
1188          *              The ID of the post to bookmark
1189          */
1190         public void bookmarkPost(String id) {
1191                 synchronized (bookmarkedPosts) {
1192                         bookmarkedPosts.add(id);
1193                 }
1194         }
1195
1196         /**
1197          * Removes the given post from the bookmarks.
1198          *
1199          * @param post
1200          *              The post to unbookmark
1201          */
1202         public void unbookmark(Post post) {
1203                 unbookmarkPost(post.getId());
1204         }
1205
1206         /**
1207          * Removes the post with the given ID from the bookmarks.
1208          *
1209          * @param id
1210          *              The ID of the post to unbookmark
1211          */
1212         public void unbookmarkPost(String id) {
1213                 synchronized (bookmarkedPosts) {
1214                         bookmarkedPosts.remove(id);
1215                 }
1216         }
1217
1218         /**
1219          * Deletes the given reply.
1220          *
1221          * @param reply
1222          *              The reply to delete
1223          */
1224         public void deleteReply(PostReply reply) {
1225                 Sone sone = reply.getSone();
1226                 if (!sone.isLocal()) {
1227                         logger.log(Level.FINE, String.format("Tried to delete non-local reply: %s", reply));
1228                         return;
1229                 }
1230                 database.removePostReply(reply);
1231                 markReplyKnown(reply);
1232                 sone.removeReply(reply);
1233                 touchConfiguration();
1234         }
1235
1236         /**
1237          * Marks the given reply as known, if it is currently not a known reply
1238          * (according to {@link Reply#isKnown()}).
1239          *
1240          * @param reply
1241          *              The reply to mark as known
1242          */
1243         public void markReplyKnown(PostReply reply) {
1244                 boolean previouslyKnown = reply.isKnown();
1245                 reply.setKnown(true);
1246                 eventBus.post(new MarkPostReplyKnownEvent(reply));
1247                 if (!previouslyKnown) {
1248                         touchConfiguration();
1249                 }
1250         }
1251
1252         /**
1253          * Creates a new image.
1254          *
1255          * @param sone
1256          *              The Sone creating the image
1257          * @param album
1258          *              The album the image will be inserted into
1259          * @param temporaryImage
1260          *              The temporary image to create the image from
1261          * @return The newly created image
1262          */
1263         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1264                 checkNotNull(sone, "sone must not be null");
1265                 checkNotNull(album, "album must not be null");
1266                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1267                 checkArgument(sone.isLocal(), "sone must be a local Sone");
1268                 checkArgument(sone.equals(album.getSone()), "album must belong to the given Sone");
1269                 Image image = album.newImageBuilder().withId(temporaryImage.getId()).sized(temporaryImage.getWidth(), temporaryImage.getHeight()).build(imageCreated());
1270                 imageInserter.insertImage(temporaryImage, image);
1271                 return image;
1272         }
1273
1274         /**
1275          * Deletes the given image. This method will also delete a matching temporary
1276          * image.
1277          *
1278          * @param image
1279          *              The image to delete
1280          * @see #deleteTemporaryImage(String)
1281          */
1282         public void deleteImage(Image image) {
1283                 checkNotNull(image, "image must not be null");
1284                 checkArgument(image.getSone().isLocal(), "image must belong to a local Sone");
1285                 deleteTemporaryImage(image.getId());
1286                 image.remove();
1287                 touchConfiguration();
1288         }
1289
1290         /**
1291          * Creates a new temporary image.
1292          *
1293          * @param mimeType
1294          *              The MIME type of the temporary image
1295          * @param imageData
1296          *              The encoded data of the image
1297          * @return The temporary image
1298          */
1299         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData, int width, int height) {
1300                 TemporaryImage temporaryImage = new TemporaryImage(mimeType, imageData, width, height);
1301                 synchronized (temporaryImages) {
1302                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
1303                 }
1304                 return temporaryImage;
1305         }
1306
1307         /**
1308          * Deletes the temporary image with the given ID.
1309          *
1310          * @param imageId
1311          *              The ID of the temporary image to delete
1312          */
1313         public void deleteTemporaryImage(String imageId) {
1314                 checkNotNull(imageId, "imageId must not be null");
1315                 synchronized (temporaryImages) {
1316                         temporaryImages.remove(imageId);
1317                 }
1318                 Optional<Image> image = getImage(imageId);
1319                 if (image.isPresent()) {
1320                         imageInserter.cancelImageInsert(image.get());
1321                 }
1322         }
1323
1324         /**
1325          * Notifies the core that the configuration, either of the core or of a single
1326          * local Sone, has changed, and that the configuration should be saved.
1327          */
1328         public void touchConfiguration() {
1329                 lastConfigurationUpdate = System.currentTimeMillis();
1330         }
1331
1332         //
1333         // SERVICE METHODS
1334         //
1335
1336         @Override
1337         public void serviceStart() {
1338                 loadConfiguration();
1339                 updateChecker.start();
1340                 identityManager.start();
1341                 webOfTrustUpdater.init();
1342                 webOfTrustUpdater.start();
1343                 database.start();
1344         }
1345
1346         @Override
1347         public void serviceRun() {
1348                 long lastSaved = System.currentTimeMillis();
1349                 while (!shouldStop()) {
1350                         sleep(1000);
1351                         long now = System.currentTimeMillis();
1352                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1353                                 for (Sone localSone : getLocalSones()) {
1354                                         saveSone(localSone);
1355                                 }
1356                                 saveConfiguration();
1357                                 lastSaved = now;
1358                         }
1359                 }
1360         }
1361
1362         @Override
1363         public void serviceStop() {
1364                 localElementTicker.shutdownNow();
1365                 synchronized (sones) {
1366                         for (Entry<Sone, SoneInserter> soneInserter : soneInserters.entrySet()) {
1367                                 soneInserter.getValue().stop();
1368                                 saveSone(soneInserter.getKey());
1369                         }
1370                 }
1371                 saveConfiguration();
1372                 database.stop();
1373                 webOfTrustUpdater.stop();
1374                 updateChecker.stop();
1375                 soneDownloader.stop();
1376                 soneDownloaders.shutdown();
1377                 identityManager.stop();
1378         }
1379
1380         //
1381         // PRIVATE METHODS
1382         //
1383
1384         /**
1385          * Saves the given Sone. This will persist all local settings for the given
1386          * Sone, such as the friends list and similar, private options.
1387          *
1388          * @param sone
1389          *              The Sone to save
1390          */
1391         private synchronized void saveSone(Sone sone) {
1392                 if (!sone.isLocal()) {
1393                         logger.log(Level.FINE, String.format("Tried to save non-local Sone: %s", sone));
1394                         return;
1395                 }
1396                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1397                         logger.log(Level.WARNING, String.format("Local Sone without OwnIdentity found, refusing to save: %s", sone));
1398                         return;
1399                 }
1400
1401                 logger.log(Level.INFO, String.format("Saving Sone: %s", sone));
1402                 try {
1403                         /* save Sone into configuration. */
1404                         String sonePrefix = "Sone/" + sone.getId();
1405                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1406                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1407
1408                         /* save profile. */
1409                         Profile profile = sone.getProfile();
1410                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1411                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1412                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1413                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1414                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1415                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1416                         configuration.getStringValue(sonePrefix + "/Profile/Avatar").setValue(profile.getAvatar());
1417
1418                         /* save profile fields. */
1419                         int fieldCounter = 0;
1420                         for (Field profileField : profile.getFields()) {
1421                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
1422                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
1423                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
1424                         }
1425                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
1426
1427                         /* save posts. */
1428                         int postCounter = 0;
1429                         for (Post post : sone.getPosts()) {
1430                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1431                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1432                                 configuration.getStringValue(postPrefix + "/Recipient").setValue(post.getRecipientId().orNull());
1433                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1434                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1435                         }
1436                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1437
1438                         /* save replies. */
1439                         int replyCounter = 0;
1440                         for (PostReply reply : sone.getReplies()) {
1441                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1442                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1443                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPostId());
1444                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1445                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1446                         }
1447                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1448
1449                         /* save post likes. */
1450                         int postLikeCounter = 0;
1451                         for (String postId : sone.getLikedPostIds()) {
1452                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1453                         }
1454                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1455
1456                         /* save reply likes. */
1457                         int replyLikeCounter = 0;
1458                         for (String replyId : sone.getLikedReplyIds()) {
1459                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1460                         }
1461                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1462
1463                         /* save friends. */
1464                         int friendCounter = 0;
1465                         for (String friendId : sone.getFriends()) {
1466                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1467                         }
1468                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1469
1470                         /* save albums. first, collect in a flat structure, top-level first. */
1471                         List<Album> albums = from(sone.getRootAlbum().getAlbums()).transformAndConcat(Album.FLATTENER).toList();
1472
1473                         int albumCounter = 0;
1474                         for (Album album : albums) {
1475                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1476                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
1477                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
1478                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
1479                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent().equals(sone.getRootAlbum()) ? null : album.getParent().getId());
1480                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage().transform(GET_ID).orNull());
1481                         }
1482                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
1483
1484                         /* save images. */
1485                         int imageCounter = 0;
1486                         for (Album album : albums) {
1487                                 for (Image image : album.getImages()) {
1488                                         if (!image.isInserted()) {
1489                                                 continue;
1490                                         }
1491                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1492                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
1493                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
1494                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
1495                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
1496                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
1497                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
1498                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
1499                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
1500                                 }
1501                         }
1502                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
1503
1504                         /* save options. */
1505                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
1506                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewSones").getReal());
1507                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewPosts").getReal());
1508                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewReplies").getReal());
1509                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").getReal());
1510                         configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").setValue(sone.getOptions().<ShowCustomAvatars>getEnumOption("ShowCustomAvatars").get().name());
1511
1512                         configuration.save();
1513
1514                         webOfTrustUpdater.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
1515
1516                         logger.log(Level.INFO, String.format("Sone %s saved.", sone));
1517                 } catch (ConfigurationException ce1) {
1518                         logger.log(Level.WARNING, String.format("Could not save Sone: %s", sone), ce1);
1519                 }
1520         }
1521
1522         /** Saves the current options. */
1523         private void saveConfiguration() {
1524                 synchronized (configuration) {
1525                         if (storingConfiguration) {
1526                                 logger.log(Level.FINE, "Already storing configuration…");
1527                                 return;
1528                         }
1529                         storingConfiguration = true;
1530                 }
1531
1532                 /* store the options first. */
1533                 try {
1534                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
1535                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
1536                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
1537                         configuration.getIntValue("Option/ImagesPerPage").setValue(options.getIntegerOption("ImagesPerPage").getReal());
1538                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
1539                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
1540                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
1541                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
1542                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
1543                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
1544                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
1545                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
1546
1547                         /* save known Sones. */
1548                         int soneCounter = 0;
1549                         synchronized (knownSones) {
1550                                 for (String knownSoneId : knownSones) {
1551                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
1552                                 }
1553                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
1554                         }
1555
1556                         /* save Sone following times. */
1557                         soneCounter = 0;
1558                         synchronized (soneFollowingTimes) {
1559                                 for (Entry<String, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
1560                                         configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey());
1561                                         configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
1562                                         ++soneCounter;
1563                                 }
1564                                 configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
1565                         }
1566
1567                         /* save known posts. */
1568                         database.save();
1569
1570                         /* save bookmarked posts. */
1571                         int bookmarkedPostCounter = 0;
1572                         synchronized (bookmarkedPosts) {
1573                                 for (String bookmarkedPostId : bookmarkedPosts) {
1574                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
1575                                 }
1576                         }
1577                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
1578
1579                         /* now save it. */
1580                         configuration.save();
1581
1582                 } catch (ConfigurationException ce1) {
1583                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
1584                 } catch (DatabaseException de1) {
1585                         logger.log(Level.SEVERE, "Could not save database!", de1);
1586                 } finally {
1587                         synchronized (configuration) {
1588                                 storingConfiguration = false;
1589                         }
1590                 }
1591         }
1592
1593         /** Loads the configuration. */
1594         private void loadConfiguration() {
1595                 /* create options. */
1596                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangePredicate(0, Integer.MAX_VALUE), new OptionWatcher<Integer>() {
1597
1598                         @Override
1599                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
1600                                 SoneInserter.setInsertionDelay(newValue);
1601                         }
1602
1603                 }));
1604                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
1605                 options.addIntegerOption("ImagesPerPage", new DefaultOption<Integer>(9, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
1606                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, Predicates.<Integer>or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
1607                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, Predicates.<Integer>or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
1608                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
1609                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangePredicate(0, 100)));
1610                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangePredicate(-100, 100)));
1611                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
1612                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, new OptionWatcher<Boolean>() {
1613
1614                         @Override
1615                         @SuppressWarnings("synthetic-access")
1616                         public void optionChanged(Option<Boolean> option, Boolean oldValue, Boolean newValue) {
1617                                 fcpInterface.setActive(newValue);
1618                         }
1619                 }));
1620                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, new OptionWatcher<Integer>() {
1621
1622                         @Override
1623                         @SuppressWarnings("synthetic-access")
1624                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
1625                                 fcpInterface.setFullAccessRequired(FullAccessRequired.values()[newValue]);
1626                         }
1627
1628                 }));
1629
1630                 loadConfigurationValue("InsertionDelay");
1631                 loadConfigurationValue("PostsPerPage");
1632                 loadConfigurationValue("ImagesPerPage");
1633                 loadConfigurationValue("CharactersPerPost");
1634                 loadConfigurationValue("PostCutOffLength");
1635                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
1636                 loadConfigurationValue("PositiveTrust");
1637                 loadConfigurationValue("NegativeTrust");
1638                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
1639                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
1640                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
1641
1642                 /* load known Sones. */
1643                 int soneCounter = 0;
1644                 while (true) {
1645                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
1646                         if (knownSoneId == null) {
1647                                 break;
1648                         }
1649                         synchronized (knownSones) {
1650                                 knownSones.add(knownSoneId);
1651                         }
1652                 }
1653
1654                 /* load Sone following times. */
1655                 soneCounter = 0;
1656                 while (true) {
1657                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
1658                         if (soneId == null) {
1659                                 break;
1660                         }
1661                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
1662                         synchronized (soneFollowingTimes) {
1663                                 soneFollowingTimes.put(soneId, time);
1664                         }
1665                         ++soneCounter;
1666                 }
1667
1668                 /* load bookmarked posts. */
1669                 int bookmarkedPostCounter = 0;
1670                 while (true) {
1671                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
1672                         if (bookmarkedPostId == null) {
1673                                 break;
1674                         }
1675                         synchronized (bookmarkedPosts) {
1676                                 bookmarkedPosts.add(bookmarkedPostId);
1677                         }
1678                 }
1679
1680         }
1681
1682         /**
1683          * Loads an {@link Integer} configuration value for the option with the given
1684          * name, logging validation failures.
1685          *
1686          * @param optionName
1687          *              The name of the option to load
1688          */
1689         private void loadConfigurationValue(String optionName) {
1690                 try {
1691                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
1692                 } catch (IllegalArgumentException iae1) {
1693                         logger.log(Level.WARNING, String.format("Invalid value for %s in configuration, using default.", optionName));
1694                 }
1695         }
1696
1697         /**
1698          * Notifies the core that a new {@link OwnIdentity} was added.
1699          *
1700          * @param ownIdentityAddedEvent
1701          *              The event
1702          */
1703         @Subscribe
1704         public void ownIdentityAdded(OwnIdentityAddedEvent ownIdentityAddedEvent) {
1705                 OwnIdentity ownIdentity = ownIdentityAddedEvent.ownIdentity();
1706                 logger.log(Level.FINEST, String.format("Adding OwnIdentity: %s", ownIdentity));
1707                 if (ownIdentity.hasContext("Sone")) {
1708                         addLocalSone(ownIdentity);
1709                 }
1710         }
1711
1712         /**
1713          * Notifies the core that an {@link OwnIdentity} was removed.
1714          *
1715          * @param ownIdentityRemovedEvent
1716          *              The event
1717          */
1718         @Subscribe
1719         public void ownIdentityRemoved(OwnIdentityRemovedEvent ownIdentityRemovedEvent) {
1720                 OwnIdentity ownIdentity = ownIdentityRemovedEvent.ownIdentity();
1721                 logger.log(Level.FINEST, String.format("Removing OwnIdentity: %s", ownIdentity));
1722                 trustedIdentities.removeAll(ownIdentity);
1723         }
1724
1725         /**
1726          * Notifies the core that a new {@link Identity} was added.
1727          *
1728          * @param identityAddedEvent
1729          *              The event
1730          */
1731         @Subscribe
1732         public void identityAdded(IdentityAddedEvent identityAddedEvent) {
1733                 Identity identity = identityAddedEvent.identity();
1734                 logger.log(Level.FINEST, String.format("Adding Identity: %s", identity));
1735                 trustedIdentities.put(identityAddedEvent.ownIdentity(), identity);
1736                 addRemoteSone(identity);
1737         }
1738
1739         /**
1740          * Notifies the core that an {@link Identity} was updated.
1741          *
1742          * @param identityUpdatedEvent
1743          *              The event
1744          */
1745         @Subscribe
1746         public void identityUpdated(IdentityUpdatedEvent identityUpdatedEvent) {
1747                 final Identity identity = identityUpdatedEvent.identity();
1748                 soneDownloaders.execute(new Runnable() {
1749
1750                         @Override
1751                         @SuppressWarnings("synthetic-access")
1752                         public void run() {
1753                                 Optional<Sone> sone = getRemoteSone(identity.getId());
1754                                 sone.get().setIdentity(identity);
1755                                 sone.get().setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.get().getLatestEdition()));
1756                                 soneDownloader.addSone(sone.get());
1757                                 soneDownloader.fetchSone(sone.get());
1758                         }
1759                 });
1760         }
1761
1762         /**
1763          * Notifies the core that an {@link Identity} was removed.
1764          *
1765          * @param identityRemovedEvent
1766          *              The event
1767          */
1768         @Subscribe
1769         public void identityRemoved(IdentityRemovedEvent identityRemovedEvent) {
1770                 OwnIdentity ownIdentity = identityRemovedEvent.ownIdentity();
1771                 Identity identity = identityRemovedEvent.identity();
1772                 trustedIdentities.remove(ownIdentity, identity);
1773                 boolean foundIdentity = false;
1774                 for (Entry<OwnIdentity, Collection<Identity>> trustedIdentity : trustedIdentities.asMap().entrySet()) {
1775                         if (trustedIdentity.getKey().equals(ownIdentity)) {
1776                                 continue;
1777                         }
1778                         if (trustedIdentity.getValue().contains(identity)) {
1779                                 foundIdentity = true;
1780                         }
1781                 }
1782                 if (foundIdentity) {
1783                         /* some local identity still trusts this identity, don’t remove. */
1784                         return;
1785                 }
1786                 Optional<Sone> sone = getSone(identity.getId());
1787                 if (!sone.isPresent()) {
1788                         /* TODO - we don’t have the Sone anymore. should this happen? */
1789                         return;
1790                 }
1791                 database.removePosts(sone.get());
1792                 for (Post post : sone.get().getPosts()) {
1793                         eventBus.post(new PostRemovedEvent(post));
1794                 }
1795                 database.removePostReplies(sone.get());
1796                 for (PostReply reply : sone.get().getReplies()) {
1797                         eventBus.post(new PostReplyRemovedEvent(reply));
1798                 }
1799                 synchronized (sones) {
1800                         sones.remove(identity.getId());
1801                 }
1802                 eventBus.post(new SoneRemovedEvent(sone.get()));
1803         }
1804
1805         /**
1806          * Deletes the temporary image.
1807          *
1808          * @param imageInsertFinishedEvent
1809          *              The event
1810          */
1811         @Subscribe
1812         public void imageInsertFinished(ImageInsertFinishedEvent imageInsertFinishedEvent) {
1813                 logger.log(Level.WARNING, String.format("Image insert finished for %s: %s", imageInsertFinishedEvent.image(), imageInsertFinishedEvent.resultingUri()));
1814                 imageInsertFinishedEvent.image().modify().setKey(imageInsertFinishedEvent.resultingUri().toString()).update();
1815                 deleteTemporaryImage(imageInsertFinishedEvent.image().getId());
1816                 touchConfiguration();
1817         }
1818
1819         public Optional<PostCreated> postCreated() {
1820                 return Optional.<PostCreated>of(new PostCreated() {
1821                         @Override
1822                         public void postCreated(final Post post) {
1823                                 if (post.isKnown()) {
1824                                         return;
1825                                 }
1826                                 eventBus.post(new NewPostFoundEvent(post));
1827                                 if (post.getSone().isLocal()) {
1828                                         localElementTicker.schedule(new Runnable() {
1829                                                 @Override
1830                                                 public void run() {
1831                                                         markPostKnown(post);
1832                                                 }
1833                                         }, 10, TimeUnit.SECONDS);
1834                                 }
1835                         }
1836                 });
1837         }
1838
1839         public Optional<PostReplyCreated> postReplyCreated() {
1840                 return Optional.<PostReplyCreated>of(new PostReplyCreated() {
1841                         @Override
1842                         public void postReplyCreated(final PostReply postReply) {
1843                                 if (postReply.isKnown()) {
1844                                         return;
1845                                 }
1846                                 eventBus.post(new NewPostReplyFoundEvent(postReply));
1847                                 if (postReply.getSone().isLocal()) {
1848                                         localElementTicker.schedule(new Runnable() {
1849
1850                                                 /**
1851                                                  * {@inheritDoc}
1852                                                  */
1853                                                 @Override
1854                                                 public void run() {
1855                                                         markReplyKnown(postReply);
1856                                                 }
1857                                         }, 10, TimeUnit.SECONDS);
1858                                 }
1859                         }
1860                 });
1861         }
1862
1863         public Optional<ImageCreated> imageCreated() {
1864                 return Optional.<ImageCreated>of(new ImageCreated() {
1865                         @Override
1866                         public void imageCreated(Image image) {
1867                                 /* nothing happens here yet. */
1868                         }
1869                 });
1870         }
1871
1872 }