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.PostProvider;
  76 import net.pterodactylus.sone.database.PostReplyBuilder;
  77 import net.pterodactylus.sone.database.PostReplyBuilder.PostReplyCreated;
  78 import net.pterodactylus.sone.database.PostReplyProvider;
  79 import net.pterodactylus.sone.database.SoneProvider;
  80 import net.pterodactylus.sone.fcp.FcpInterface;
  81 import net.pterodactylus.sone.fcp.FcpInterface.FullAccessRequired;
  82 import net.pterodactylus.sone.freenet.wot.Identity;
  83 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  84 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  85 import net.pterodactylus.sone.freenet.wot.event.IdentityAddedEvent;
  86 import net.pterodactylus.sone.freenet.wot.event.IdentityRemovedEvent;
  87 import net.pterodactylus.sone.freenet.wot.event.IdentityUpdatedEvent;
  88 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityAddedEvent;
  89 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityRemovedEvent;
  90 import net.pterodactylus.sone.main.SonePlugin;
  91 import net.pterodactylus.sone.utils.IntegerRangePredicate;
  92 import net.pterodactylus.util.config.Configuration;
  93 import net.pterodactylus.util.config.ConfigurationException;
  94 import net.pterodactylus.util.logging.Logging;
  95 import net.pterodactylus.util.number.Numbers;
  96 import net.pterodactylus.util.service.AbstractService;
  97 import net.pterodactylus.util.thread.NamedThreadFactory;
  98
  99 import freenet.keys.FreenetURI;
 100
 101 import com.google.common.base.Optional;
 102 import com.google.common.base.Predicate;
 103 import com.google.common.base.Predicates;
 104 import com.google.common.collect.HashMultimap;
 105 import com.google.common.collect.ImmutableSet;
 106 import com.google.common.collect.Maps;
 107 import com.google.common.collect.Multimap;
 108 import com.google.common.collect.Multimaps;
 109 import com.google.common.eventbus.EventBus;
 110 import com.google.common.eventbus.Subscribe;
 111 import com.google.inject.Inject;
 112
 113 /**
 114  * The Sone core.
 115  *
 116  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 117  */
 118 public class Core extends AbstractService implements SoneProvider, PostProvider, PostReplyProvider {
 119
 120         /** The logger. */
 121         private static final Logger logger = Logging.getLogger(Core.class);
 122
 123         /** The start time. */
 124         private final long startupTime = System.currentTimeMillis();
 125
 126         /** The options. */
 127         private final Options options = new Options();
 128
 129         /** The preferences. */
 130         private final Preferences preferences = new Preferences(options);
 131
 132         /** The event bus. */
 133         private final EventBus eventBus;
 134
 135         /** The configuration. */
 136         private Configuration configuration;
 137
 138         /** Whether we’re currently saving the configuration. */
 139         private boolean storingConfiguration = false;
 140
 141         /** The identity manager. */
 142         private final IdentityManager identityManager;
 143
 144         /** Interface to freenet. */
 145         private final FreenetInterface freenetInterface;
 146
 147         /** The Sone downloader. */
 148         private final SoneDownloader soneDownloader;
 149
 150         /** The image inserter. */
 151         private final ImageInserter imageInserter;
 152
 153         /** Sone downloader thread-pool. */
 154         private final ExecutorService soneDownloaders = Executors.newFixedThreadPool(10, new NamedThreadFactory("Sone Downloader %2$d"));
 155
 156         /** The update checker. */
 157         private final UpdateChecker updateChecker;
 158
 159         /** The trust updater. */
 160         private final WebOfTrustUpdater webOfTrustUpdater;
 161
 162         /** The FCP interface. */
 163         private volatile FcpInterface fcpInterface;
 164
 165         /** The times Sones were followed. */
 166         private final Map<String, Long> soneFollowingTimes = new HashMap<String, Long>();
 167
 168         /** Locked local Sones. */
 169         /* synchronize on itself. */
 170         private final Set<Sone> lockedSones = new HashSet<Sone>();
 171
 172         /** Sone inserters. */
 173         /* synchronize access on this on sones. */
 174         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 175
 176         /** Sone rescuers. */
 177         /* synchronize access on this on sones. */
 178         private final Map<Sone, SoneRescuer> soneRescuers = new HashMap<Sone, SoneRescuer>();
 179
 180         /** All Sones. */
 181         /* synchronize access on this on itself. */
 182         private final Map<String, Sone> sones = new HashMap<String, Sone>();
 183
 184         /** All known Sones. */
 185         private final Set<String> knownSones = new HashSet<String>();
 186
 187         /** The post database. */
 188         private final Database database;
 189
 190         /** All bookmarked posts. */
 191         /* synchronize access on itself. */
 192         private final Set<String> bookmarkedPosts = new HashSet<String>();
 193
 194         /** Trusted identities, sorted by own identities. */
 195         private final Multimap<OwnIdentity, Identity> trustedIdentities = Multimaps.synchronizedSetMultimap(HashMultimap.<OwnIdentity, Identity>create());
 196
 197         /** All temporary images. */
 198         private final Map<String, TemporaryImage> temporaryImages = new HashMap<String, TemporaryImage>();
 199
 200         /** Ticker for threads that mark own elements as known. */
 201         private final ScheduledExecutorService localElementTicker = Executors.newScheduledThreadPool(1);
 202
 203         /** The time the configuration was last touched. */
 204         private volatile long lastConfigurationUpdate;
 205
 206         /**
 207          * Creates a new core.
 208          *
 209          * @param configuration
 210          *              The configuration of the core
 211          * @param freenetInterface
 212          *              The freenet interface
 213          * @param identityManager
 214          *              The identity manager
 215          * @param webOfTrustUpdater
 216          *              The WebOfTrust updater
 217          * @param eventBus
 218          *              The event bus
 219          * @param database
 220          *              The database
 221          */
 222         @Inject
 223         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager, WebOfTrustUpdater webOfTrustUpdater, EventBus eventBus, Database database) {
 224                 super("Sone Core");
 225                 this.configuration = configuration;
 226                 this.freenetInterface = freenetInterface;
 227                 this.identityManager = identityManager;
 228                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 229                 this.imageInserter = new ImageInserter(freenetInterface);
 230                 this.updateChecker = new UpdateChecker(eventBus, freenetInterface);
 231                 this.webOfTrustUpdater = webOfTrustUpdater;
 232                 this.eventBus = eventBus;
 233                 this.database = database;
 234         }
 235
 236         //
 237         // ACCESSORS
 238         //
 239
 240         /**
 241          * Returns the time Sone was started.
 242          *
 243          * @return The startup time (in milliseconds since Jan 1, 1970 UTC)
 244          */
 245         public long getStartupTime() {
 246                 return startupTime;
 247         }
 248
 249         /**
 250          * Sets the configuration to use. This will automatically save the current
 251          * configuration to the given configuration.
 252          *
 253          * @param configuration
 254          *              The new configuration to use
 255          */
 256         public void setConfiguration(Configuration configuration) {
 257                 this.configuration = configuration;
 258                 touchConfiguration();
 259         }
 260
 261         /**
 262          * Returns the options used by the core.
 263          *
 264          * @return The options of the core
 265          */
 266         public Preferences getPreferences() {
 267                 return preferences;
 268         }
 269
 270         /**
 271          * Returns the identity manager used by the core.
 272          *
 273          * @return The identity manager
 274          */
 275         public IdentityManager getIdentityManager() {
 276                 return identityManager;
 277         }
 278
 279         /**
 280          * Returns the update checker.
 281          *
 282          * @return The update checker
 283          */
 284         public UpdateChecker getUpdateChecker() {
 285                 return updateChecker;
 286         }
 287
 288         /**
 289          * Sets the FCP interface to use.
 290          *
 291          * @param fcpInterface
 292          *              The FCP interface to use
 293          */
 294         public void setFcpInterface(FcpInterface fcpInterface) {
 295                 this.fcpInterface = fcpInterface;
 296         }
 297
 298         public Database getDatabase() {
 299                 return database;
 300         }
 301
 302         /**
 303          * Returns the Sone rescuer for the given local Sone.
 304          *
 305          * @param sone
 306          *              The local Sone to get the rescuer for
 307          * @return The Sone rescuer for the given Sone
 308          */
 309         public SoneRescuer getSoneRescuer(Sone sone) {
 310                 checkNotNull(sone, "sone must not be null");
 311                 checkArgument(sone.isLocal(), "sone must be local");
 312                 synchronized (sones) {
 313                         SoneRescuer soneRescuer = soneRescuers.get(sone);
 314                         if (soneRescuer == null) {
 315                                 soneRescuer = new SoneRescuer(this, soneDownloader, sone);
 316                                 soneRescuers.put(sone, soneRescuer);
 317                                 soneRescuer.start();
 318                         }
 319                         return soneRescuer;
 320                 }
 321         }
 322
 323         /**
 324          * Returns whether the given Sone is currently locked.
 325          *
 326          * @param sone
 327          *              The sone to check
 328          * @return {@code true} if the Sone is locked, {@code false} if it is not
 329          */
 330         public boolean isLocked(Sone sone) {
 331                 synchronized (lockedSones) {
 332                         return lockedSones.contains(sone);
 333                 }
 334         }
 335
 336         @Override
 337         public Collection<Sone> getSones() {
 338                 synchronized (sones) {
 339                         return ImmutableSet.copyOf(sones.values());
 340                 }
 341         }
 342
 343         @Override
 344         public Optional<Sone> getSone(String id) {
 345                 synchronized (sones) {
 346                         return Optional.fromNullable(sones.get(id));
 347                 }
 348         }
 349
 350         @Override
 351         public Collection<Sone> getLocalSones() {
 352                 synchronized (sones) {
 353                         return from(sones.values()).filter(new Predicate<Sone>() {
 354
 355                                 @Override
 356                                 public boolean apply(Sone sone) {
 357                                         return sone.isLocal();
 358                                 }
 359                         }).toSet();
 360                 }
 361         }
 362
 363         /**
 364          * Returns the local Sone with the given ID, optionally creating a new Sone.
 365          *
 366          * @param id
 367          *              The ID of the Sone
 368          * @return The Sone with the given ID, or {@code null}
 369          */
 370         public Optional<Sone> getLocalSone(String id) {
 371                 return from(database.getSone(id).asSet()).firstMatch(LOCAL_SONE_FILTER);
 372         }
 373
 374         @Override
 375         public Collection<Sone> getRemoteSones() {
 376                 synchronized (sones) {
 377                         return from(sones.values()).filter(new Predicate<Sone>() {
 378
 379                                 @Override
 380                                 public boolean apply(Sone sone) {
 381                                         return !sone.isLocal();
 382                                 }
 383                         }).toSet();
 384                 }
 385         }
 386
 387         /**
 388          * Returns the remote Sone with the given ID.
 389          *
 390          * @param id
 391          *              The ID of the remote Sone to get
 392          * @return The Sone with the given ID
 393          */
 394         public Optional<Sone> getRemoteSone(String id) {
 395                 return from(database.getSone(id).asSet()).firstMatch(not(LOCAL_SONE_FILTER));
 396         }
 397
 398         /**
 399          * Returns whether the given Sone has been modified.
 400          *
 401          * @param sone
 402          *              The Sone to check for modifications
 403          * @return {@code true} if a modification has been detected in the Sone, {@code
 404          *         false} otherwise
 405          */
 406         public boolean isModifiedSone(Sone sone) {
 407                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 408         }
 409
 410         /**
 411          * Returns the time when the given was first followed by any local Sone.
 412          *
 413          * @param sone
 414          *              The Sone to get the time for
 415          * @return The time (in milliseconds since Jan 1, 1970) the Sone has first been
 416          *         followed, or {@link Long#MAX_VALUE}
 417          */
 418         public long getSoneFollowingTime(Sone sone) {
 419                 synchronized (soneFollowingTimes) {
 420                         return Optional.fromNullable(soneFollowingTimes.get(sone.getId())).or(Long.MAX_VALUE);
 421                 }
 422         }
 423
 424         /**
 425          * Returns whether the target Sone is trusted by the origin Sone.
 426          *
 427          * @param origin
 428          *              The origin Sone
 429          * @param target
 430          *              The target Sone
 431          * @return {@code true} if the target Sone is trusted by the origin Sone
 432          */
 433         public boolean isSoneTrusted(Sone origin, Sone target) {
 434                 checkNotNull(origin, "origin must not be null");
 435                 checkNotNull(target, "target must not be null");
 436                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin’s identity must be an OwnIdentity");
 437                 return trustedIdentities.containsEntry(origin.getIdentity(), target.getIdentity());
 438         }
 439
 440         @Override
 441         public Optional<Post> getPost(String postId) {
 442                 return database.getPost(postId);
 443         }
 444
 445         @Override
 446         public Collection<Post> getPosts(String soneId) {
 447                 return database.getPosts(soneId);
 448         }
 449
 450         @Override
 451         public Collection<Post> getDirectedPosts(final String recipientId) {
 452                 checkNotNull(recipientId, "recipient must not be null");
 453                 return database.getDirectedPosts(recipientId);
 454         }
 455
 456         @Override
 457         public Optional<PostReply> getPostReply(String replyId) {
 458                 return database.getPostReply(replyId);
 459         }
 460
 461         @Override
 462         public List<PostReply> getReplies(final String postId) {
 463                 return database.getReplies(postId);
 464         }
 465
 466         /**
 467          * Returns all Sones that have liked the given post.
 468          *
 469          * @param post
 470          *              The post to get the liking Sones for
 471          * @return The Sones that like the given post
 472          */
 473         public Set<Sone> getLikes(Post post) {
 474                 Set<Sone> sones = new HashSet<Sone>();
 475                 for (Sone sone : getSones()) {
 476                         if (sone.getLikedPostIds().contains(post.getId())) {
 477                                 sones.add(sone);
 478                         }
 479                 }
 480                 return sones;
 481         }
 482
 483         /**
 484          * Returns all Sones that have liked the given reply.
 485          *
 486          * @param reply
 487          *              The reply to get the liking Sones for
 488          * @return The Sones that like the given reply
 489          */
 490         public Set<Sone> getLikes(PostReply reply) {
 491                 Set<Sone> sones = new HashSet<Sone>();
 492                 for (Sone sone : getSones()) {
 493                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 494                                 sones.add(sone);
 495                         }
 496                 }
 497                 return sones;
 498         }
 499
 500         /**
 501          * Returns whether the given post is bookmarked.
 502          *
 503          * @param post
 504          *              The post to check
 505          * @return {@code true} if the given post is bookmarked, {@code false}
 506          *         otherwise
 507          */
 508         public boolean isBookmarked(Post post) {
 509                 return isPostBookmarked(post.getId());
 510         }
 511
 512         /**
 513          * Returns whether the post with the given ID is bookmarked.
 514          *
 515          * @param id
 516          *              The ID of the post to check
 517          * @return {@code true} if the post with the given ID is bookmarked, {@code
 518          *         false} otherwise
 519          */
 520         public boolean isPostBookmarked(String id) {
 521                 synchronized (bookmarkedPosts) {
 522                         return bookmarkedPosts.contains(id);
 523                 }
 524         }
 525
 526         /**
 527          * Returns all currently known bookmarked posts.
 528          *
 529          * @return All bookmarked posts
 530          */
 531         public Set<Post> getBookmarkedPosts() {
 532                 Set<Post> posts = new HashSet<Post>();
 533                 synchronized (bookmarkedPosts) {
 534                         for (String bookmarkedPostId : bookmarkedPosts) {
 535                                 Optional<Post> post = getPost(bookmarkedPostId);
 536                                 if (post.isPresent()) {
 537                                         posts.add(post.get());
 538                                 }
 539                         }
 540                 }
 541                 return posts;
 542         }
 543
 544         public Optional<Album> getAlbum(String albumId) {
 545                 return database.getAlbum(albumId);
 546         }
 547
 548         public Optional<Image> getImage(String imageId) {
 549                 return database.getImage(imageId);
 550         }
 551
 552         /**
 553          * Returns the temporary image with the given ID.
 554          *
 555          * @param imageId
 556          *              The ID of the temporary image
 557          * @return The temporary image, or {@code null} if there is no temporary image
 558          *         with the given ID
 559          */
 560         public TemporaryImage getTemporaryImage(String imageId) {
 561                 synchronized (temporaryImages) {
 562                         return temporaryImages.get(imageId);
 563                 }
 564         }
 565
 566         //
 567         // ACTIONS
 568         //
 569
 570         /**
 571          * Locks the given Sone. A locked Sone will not be inserted by {@link
 572          * SoneInserter} until it is {@link #unlockSone(Sone) unlocked} again.
 573          *
 574          * @param sone
 575          *              The sone to lock
 576          */
 577         public void lockSone(Sone sone) {
 578                 synchronized (lockedSones) {
 579                         if (lockedSones.add(sone)) {
 580                                 eventBus.post(new SoneLockedEvent(sone));
 581                         }
 582                 }
 583         }
 584
 585         /**
 586          * Unlocks the given Sone.
 587          *
 588          * @param sone
 589          *              The sone to unlock
 590          * @see #lockSone(Sone)
 591          */
 592         public void unlockSone(Sone sone) {
 593                 synchronized (lockedSones) {
 594                         if (lockedSones.remove(sone)) {
 595                                 eventBus.post(new SoneUnlockedEvent(sone));
 596                         }
 597                 }
 598         }
 599
 600         /**
 601          * Adds a local Sone from the given own identity.
 602          *
 603          * @param ownIdentity
 604          *              The own identity to create a Sone from
 605          * @return The added (or already existing) Sone
 606          */
 607         public Sone addLocalSone(OwnIdentity ownIdentity) {
 608                 if (ownIdentity == null) {
 609                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 610                         return null;
 611                 }
 612                 logger.info(String.format("Adding Sone from OwnIdentity: %s", ownIdentity));
 613                 synchronized (sones) {
 614                         final Sone sone;
 615                         try {
 616                                 sone = database.newSoneBuilder().by(ownIdentity).local().build().setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 617                         } catch (MalformedURLException mue1) {
 618                                 logger.log(Level.SEVERE, String.format("Could not convert the Identity’s URIs to Freenet URIs: %s, %s", ownIdentity.getInsertUri(), ownIdentity.getRequestUri()), mue1);
 619                                 return null;
 620                         }
 621                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 622                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 623                         sone.setKnown(true);
 624                         /* TODO - load posts ’n stuff */
 625                         sones.put(ownIdentity.getId(), sone);
 626                         final SoneInserter soneInserter = new SoneInserter(this, eventBus, freenetInterface, sone);
 627                         soneInserters.put(sone, soneInserter);
 628                         sone.setStatus(SoneStatus.idle);
 629                         loadSone(sone);
 630                         soneInserter.start();
 631                         return sone;
 632                 }
 633         }
 634
 635         /**
 636          * Creates a new Sone for the given own identity.
 637          *
 638          * @param ownIdentity
 639          *              The own identity to create a Sone for
 640          * @return The created Sone
 641          */
 642         public Sone createSone(OwnIdentity ownIdentity) {
 643                 if (!webOfTrustUpdater.addContextWait(ownIdentity, "Sone")) {
 644                         logger.log(Level.SEVERE, String.format("Could not add “Sone” context to own identity: %s", ownIdentity));
 645                         return null;
 646                 }
 647                 Sone sone = addLocalSone(ownIdentity);
 648                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 649                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
 650                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
 651                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
 652                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
 653                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 654
 655                 followSone(sone, "nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI");
 656                 touchConfiguration();
 657                 return sone;
 658         }
 659
 660         /**
 661          * Adds the Sone of the given identity.
 662          *
 663          * @param identity
 664          *              The identity whose Sone to add
 665          * @return The added or already existing Sone
 666          */
 667         public Sone addRemoteSone(Identity identity) {
 668                 if (identity == null) {
 669                         logger.log(Level.WARNING, "Given Identity is null!");
 670                         return null;
 671                 }
 672                 synchronized (sones) {
 673                         final Sone sone = database.newSoneBuilder().by(identity).build();
 674                         if (sone.isLocal()) {
 675                                 return sone;
 676                         }
 677                         sone.setIdentity(identity);
 678                         boolean newSone = sone.getRequestUri() == null;
 679                         sone.setRequestUri(SoneUri.create(identity.getRequestUri()));
 680                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 681                         if (newSone) {
 682                                 synchronized (knownSones) {
 683                                         newSone = !knownSones.contains(sone.getId());
 684                                 }
 685                                 sone.setKnown(!newSone);
 686                                 if (newSone) {
 687                                         eventBus.post(new NewSoneFoundEvent(sone));
 688                                         for (Sone localSone : getLocalSones()) {
 689                                                 if (localSone.getOptions().getBooleanOption("AutoFollow").get()) {
 690                                                         followSone(localSone, sone.getId());
 691                                                 }
 692                                         }
 693                                 }
 694                         }
 695                         soneDownloader.addSone(sone);
 696                         soneDownloaders.execute(new Runnable() {
 697
 698                                 @Override
 699                                 @SuppressWarnings("synthetic-access")
 700                                 public void run() {
 701                                         soneDownloader.fetchSone(sone, sone.getRequestUri());
 702                                 }
 703
 704                         });
 705                         return sone;
 706                 }
 707         }
 708
 709         /**
 710          * Lets the given local Sone follow the Sone with the given ID.
 711          *
 712          * @param sone
 713          *              The local Sone that should follow another Sone
 714          * @param soneId
 715          *              The ID of the Sone to follow
 716          */
 717         public void followSone(Sone sone, String soneId) {
 718                 checkNotNull(sone, "sone must not be null");
 719                 checkNotNull(soneId, "soneId must not be null");
 720                 sone.addFriend(soneId);
 721                 synchronized (soneFollowingTimes) {
 722                         if (!soneFollowingTimes.containsKey(soneId)) {
 723                                 long now = System.currentTimeMillis();
 724                                 soneFollowingTimes.put(soneId, now);
 725                                 Optional<Sone> followedSone = getSone(soneId);
 726                                 if (!followedSone.isPresent()) {
 727                                         return;
 728                                 }
 729                                 for (Post post : followedSone.get().getPosts()) {
 730                                         if (post.getTime() < now) {
 731                                                 markPostKnown(post);
 732                                         }
 733                                 }
 734                                 for (PostReply reply : followedSone.get().getReplies()) {
 735                                         if (reply.getTime() < now) {
 736                                                 markReplyKnown(reply);
 737                                         }
 738                                 }
 739                         }
 740                 }
 741                 touchConfiguration();
 742         }
 743
 744         /**
 745          * Lets the given local Sone unfollow the Sone with the given ID.
 746          *
 747          * @param sone
 748          *              The local Sone that should unfollow another Sone
 749          * @param soneId
 750          *              The ID of the Sone being unfollowed
 751          */
 752         public void unfollowSone(Sone sone, String soneId) {
 753                 checkNotNull(sone, "sone must not be null");
 754                 checkNotNull(soneId, "soneId must not be null");
 755                 sone.removeFriend(soneId);
 756                 boolean unfollowedSoneStillFollowed = false;
 757                 for (Sone localSone : getLocalSones()) {
 758                         unfollowedSoneStillFollowed |= localSone.hasFriend(soneId);
 759                 }
 760                 if (!unfollowedSoneStillFollowed) {
 761                         synchronized (soneFollowingTimes) {
 762                                 soneFollowingTimes.remove(soneId);
 763                         }
 764                 }
 765                 touchConfiguration();
 766         }
 767
 768         /**
 769          * Sets the trust value of the given origin Sone for the target Sone.
 770          *
 771          * @param origin
 772          *              The origin Sone
 773          * @param target
 774          *              The target Sone
 775          * @param trustValue
 776          *              The trust value (from {@code -100} to {@code 100})
 777          */
 778         public void setTrust(Sone origin, Sone target, int trustValue) {
 779                 checkNotNull(origin, "origin must not be null");
 780                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 781                 checkNotNull(target, "target must not be null");
 782                 checkArgument((trustValue >= -100) && (trustValue <= 100), "trustValue must be within [-100, 100]");
 783                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), trustValue, preferences.getTrustComment());
 784         }
 785
 786         /**
 787          * Removes any trust assignment for the given target Sone.
 788          *
 789          * @param origin
 790          *              The trust origin
 791          * @param target
 792          *              The trust target
 793          */
 794         public void removeTrust(Sone origin, Sone target) {
 795                 checkNotNull(origin, "origin must not be null");
 796                 checkNotNull(target, "target must not be null");
 797                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 798                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), null, null);
 799         }
 800
 801         /**
 802          * Assigns the configured positive trust value for the given target.
 803          *
 804          * @param origin
 805          *              The trust origin
 806          * @param target
 807          *              The trust target
 808          */
 809         public void trustSone(Sone origin, Sone target) {
 810                 setTrust(origin, target, preferences.getPositiveTrust());
 811         }
 812
 813         /**
 814          * Assigns the configured negative trust value for the given target.
 815          *
 816          * @param origin
 817          *              The trust origin
 818          * @param target
 819          *              The trust target
 820          */
 821         public void distrustSone(Sone origin, Sone target) {
 822                 setTrust(origin, target, preferences.getNegativeTrust());
 823         }
 824
 825         /**
 826          * Removes the trust assignment for the given target.
 827          *
 828          * @param origin
 829          *              The trust origin
 830          * @param target
 831          *              The trust target
 832          */
 833         public void untrustSone(Sone origin, Sone target) {
 834                 removeTrust(origin, target);
 835         }
 836
 837         /**
 838          * Updates the stored Sone with the given Sone.
 839          *
 840          * @param sone
 841          *              The updated Sone
 842          */
 843         public void updateSone(Sone sone) {
 844                 updateSone(sone, false);
 845         }
 846
 847         /**
 848          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
 849          * {@code true}, an older Sone than the current Sone can be given to restore an
 850          * old state.
 851          *
 852          * @param sone
 853          *              The Sone to update
 854          * @param soneRescueMode
 855          *              {@code true} if the stored Sone should be updated regardless of the age of
 856          *              the given Sone
 857          */
 858         public void updateSone(Sone sone, boolean soneRescueMode) {
 859                 Optional<Sone> storedSone = getSone(sone.getId());
 860                 if (storedSone.isPresent()) {
 861                         if (!soneRescueMode && !(sone.getTime() > storedSone.get().getTime())) {
 862                                 logger.log(Level.FINE, String.format("Downloaded Sone %s is not newer than stored Sone %s.", sone, storedSone));
 863                                 return;
 864                         }
 865                         /* find removed posts. */
 866                         Collection<Post> existingPosts = database.getPosts(sone.getId());
 867                         for (Post oldPost : existingPosts) {
 868                                 if (!sone.getPosts().contains(oldPost)) {
 869                                         eventBus.post(new PostRemovedEvent(oldPost));
 870                                 }
 871                         }
 872                         /* find new posts. */
 873                         for (Post newPost : sone.getPosts()) {
 874                                 if (existingPosts.contains(newPost)) {
 875                                         continue;
 876                                 }
 877                                 if (newPost.getTime() < getSoneFollowingTime(sone)) {
 878                                         newPost.setKnown(true);
 879                                 } else if (!newPost.isKnown()) {
 880                                         eventBus.post(new NewPostFoundEvent(newPost));
 881                                 }
 882                         }
 883                         /* store posts. */
 884                         database.storePosts(sone, sone.getPosts());
 885                         if (!soneRescueMode) {
 886                                 for (PostReply reply : storedSone.get().getReplies()) {
 887                                         if (!sone.getReplies().contains(reply)) {
 888                                                 eventBus.post(new PostReplyRemovedEvent(reply));
 889                                         }
 890                                 }
 891                         }
 892                         Set<PostReply> storedReplies = storedSone.get().getReplies();
 893                         for (PostReply reply : sone.getReplies()) {
 894                                 if (storedReplies.contains(reply)) {
 895                                         continue;
 896                                 }
 897                                 if (reply.getTime() < getSoneFollowingTime(sone)) {
 898                                         reply.setKnown(true);
 899                                 } else if (!reply.isKnown()) {
 900                                         eventBus.post(new NewPostReplyFoundEvent(reply));
 901                                 }
 902                         }
 903                         database.storePostReplies(sone, sone.getReplies());
 904                         for (Album album : storedSone.get().getRootAlbum().getAlbums()) {
 905                                 database.removeAlbum(album);
 906                                 for (Image image : album.getImages()) {
 907                                         database.removeImage(image);
 908                                 }
 909                         }
 910                         for (Album album : sone.getRootAlbum().getAlbums()) {
 911                                 database.storeAlbum(album);
 912                                 for (Image image : album.getImages()) {
 913                                         database.storeImage(image);
 914                                 }
 915                         }
 916                         synchronized (sones) {
 917                                 sone.setOptions(storedSone.get().getOptions());
 918                                 sone.setKnown(storedSone.get().isKnown());
 919                                 sone.setStatus((sone.getTime() == 0) ? SoneStatus.unknown : SoneStatus.idle);
 920                                 if (sone.isLocal()) {
 921                                         soneInserters.get(storedSone.get()).setSone(sone);
 922                                         touchConfiguration();
 923                                 }
 924                                 sones.put(sone.getId(), sone);
 925                         }
 926                 }
 927         }
 928
 929         /**
 930          * Deletes the given Sone. This will remove the Sone from the {@link
 931          * #getLocalSones() local Sones}, stop its {@link SoneInserter} and remove the
 932          * context from its identity.
 933          *
 934          * @param sone
 935          *              The Sone to delete
 936          */
 937         public void deleteSone(Sone sone) {
 938                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
 939                         logger.log(Level.WARNING, String.format("Tried to delete Sone of non-own identity: %s", sone));
 940                         return;
 941                 }
 942                 synchronized (sones) {
 943                         if (!getLocalSones().contains(sone)) {
 944                                 logger.log(Level.WARNING, String.format("Tried to delete non-local Sone: %s", sone));
 945                                 return;
 946                         }
 947                         sones.remove(sone.getId());
 948                         SoneInserter soneInserter = soneInserters.remove(sone);
 949                         soneInserter.stop();
 950                 }
 951                 webOfTrustUpdater.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
 952                 webOfTrustUpdater.removeProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition");
 953                 try {
 954                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
 955                 } catch (ConfigurationException ce1) {
 956                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
 957                 }
 958         }
 959
 960         /**
 961          * Marks the given Sone as known. If the Sone was not {@link Post#isKnown()
 962          * known} before, a {@link MarkSoneKnownEvent} is fired.
 963          *
 964          * @param sone
 965          *              The Sone to mark as known
 966          */
 967         public void markSoneKnown(Sone sone) {
 968                 if (!sone.isKnown()) {
 969                         sone.setKnown(true);
 970                         synchronized (knownSones) {
 971                                 knownSones.add(sone.getId());
 972                         }
 973                         eventBus.post(new MarkSoneKnownEvent(sone));
 974                         touchConfiguration();
 975                 }
 976         }
 977
 978         /**
 979          * Loads and updates the given Sone from the configuration. If any error is
 980          * encountered, loading is aborted and the given Sone is not changed.
 981          *
 982          * @param sone
 983          *              The Sone to load and update
 984          */
 985         public void loadSone(Sone sone) {
 986                 if (!sone.isLocal()) {
 987                         logger.log(Level.FINE, String.format("Tried to load non-local Sone: %s", sone));
 988                         return;
 989                 }
 990                 logger.info(String.format("Loading local Sone: %s", sone));
 991
 992                 /* initialize options. */
 993                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 994                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
 995                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
 996                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
 997                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
 998                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 999
1000                 /* load Sone. */
1001                 String sonePrefix = "Sone/" + sone.getId();
1002                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
1003                 if (soneTime == null) {
1004                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
1005                         return;
1006                 }
1007                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
1008
1009                 /* load profile. */
1010                 Profile profile = new Profile(sone);
1011                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
1012                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
1013                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
1014                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
1015                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
1016                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
1017
1018                 /* load profile fields. */
1019                 while (true) {
1020                         String fieldPrefix = sonePrefix + "/Profile/Fields/" + profile.getFields().size();
1021                         String fieldName = configuration.getStringValue(fieldPrefix + "/Name").getValue(null);
1022                         if (fieldName == null) {
1023                                 break;
1024                         }
1025                         String fieldValue = configuration.getStringValue(fieldPrefix + "/Value").getValue("");
1026                         profile.addField(fieldName).setValue(fieldValue);
1027                 }
1028
1029                 /* load posts. */
1030                 Set<Post> posts = new HashSet<Post>();
1031                 while (true) {
1032                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
1033                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
1034                         if (postId == null) {
1035                                 break;
1036                         }
1037                         String postRecipientId = configuration.getStringValue(postPrefix + "/Recipient").getValue(null);
1038                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
1039                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
1040                         if ((postTime == 0) || (postText == null)) {
1041                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
1042                                 return;
1043                         }
1044                         PostBuilder postBuilder = sone.newPostBuilder().withId(postId).withTime(postTime).withText(postText);
1045                         if ((postRecipientId != null) && (postRecipientId.length() == 43)) {
1046                                 postBuilder.to(of(postRecipientId));
1047                         }
1048                         posts.add(postBuilder.build(Optional.<PostCreated>absent()));
1049                 }
1050
1051                 /* load replies. */
1052                 Set<PostReply> replies = new HashSet<PostReply>();
1053                 while (true) {
1054                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
1055                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
1056                         if (replyId == null) {
1057                                 break;
1058                         }
1059                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
1060                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
1061                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
1062                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
1063                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1064                                 return;
1065                         }
1066                         PostReplyBuilder postReplyBuilder = sone.newPostReplyBuilder(postId).withId(replyId).withTime(replyTime).withText(replyText);
1067                         replies.add(postReplyBuilder.build(Optional.<PostReplyCreated>absent()));
1068                 }
1069
1070                 /* load post likes. */
1071                 Set<String> likedPostIds = new HashSet<String>();
1072                 while (true) {
1073                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
1074                         if (likedPostId == null) {
1075                                 break;
1076                         }
1077                         likedPostIds.add(likedPostId);
1078                 }
1079
1080                 /* load reply likes. */
1081                 Set<String> likedReplyIds = new HashSet<String>();
1082                 while (true) {
1083                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
1084                         if (likedReplyId == null) {
1085                                 break;
1086                         }
1087                         likedReplyIds.add(likedReplyId);
1088                 }
1089
1090                 /* load friends. */
1091                 Set<String> friends = new HashSet<String>();
1092                 while (true) {
1093                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1094                         if (friendId == null) {
1095                                 break;
1096                         }
1097                         friends.add(friendId);
1098                 }
1099
1100                 /* load albums. */
1101                 Map<String, Album> albums = Maps.newHashMap();
1102                 int albumCounter = 0;
1103                 while (true) {
1104                         String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1105                         String albumId = configuration.getStringValue(albumPrefix + "/ID").getValue(null);
1106                         if (albumId == null) {
1107                                 break;
1108                         }
1109                         String albumTitle = configuration.getStringValue(albumPrefix + "/Title").getValue(null);
1110                         String albumDescription = configuration.getStringValue(albumPrefix + "/Description").getValue(null);
1111                         String albumParentId = configuration.getStringValue(albumPrefix + "/Parent").getValue(null);
1112                         String albumImageId = configuration.getStringValue(albumPrefix + "/AlbumImage").getValue(null);
1113                         if ((albumTitle == null) || (albumDescription == null)) {
1114                                 logger.log(Level.WARNING, "Invalid album found, aborting load!");
1115                                 return;
1116                         }
1117                         Album parentAlbum = sone.getRootAlbum();
1118                         if (albumParentId != null) {
1119                                 parentAlbum = albums.get(albumParentId);
1120                         }
1121                         Album album = parentAlbum.newAlbumBuilder().withId(albumId).build().modify().setTitle(albumTitle).setDescription(albumDescription).setAlbumImage(albumImageId).update();
1122                         albums.put(album.getId(), album);
1123                 }
1124
1125                 /* load images. */
1126                 int imageCounter = 0;
1127                 while (true) {
1128                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1129                         String imageId = configuration.getStringValue(imagePrefix + "/ID").getValue(null);
1130                         if (imageId == null) {
1131                                 break;
1132                         }
1133                         String albumId = configuration.getStringValue(imagePrefix + "/Album").getValue(null);
1134                         String key = configuration.getStringValue(imagePrefix + "/Key").getValue(null);
1135                         String title = configuration.getStringValue(imagePrefix + "/Title").getValue(null);
1136                         String description = configuration.getStringValue(imagePrefix + "/Description").getValue(null);
1137                         Long creationTime = configuration.getLongValue(imagePrefix + "/CreationTime").getValue(null);
1138                         Integer width = configuration.getIntValue(imagePrefix + "/Width").getValue(null);
1139                         Integer height = configuration.getIntValue(imagePrefix + "/Height").getValue(null);
1140                         if ((albumId == null) || (key == null) || (title == null) || (description == null) || (creationTime == null) || (width == null) || (height == null)) {
1141                                 logger.log(Level.WARNING, "Invalid image found, aborting load!");
1142                                 return;
1143                         }
1144                         Album album = albums.get(albumId);
1145                         if (album == null) {
1146                                 logger.log(Level.WARNING, "Invalid album image encountered, aborting load!");
1147                                 return;
1148                         }
1149                         album.newImageBuilder().withId(imageId).created(creationTime).at(key).sized(width, height).build(Optional.<ImageCreated>absent()).modify().setTitle(title).setDescription(description).update();
1150                 }
1151
1152                 /* load avatar. */
1153                 String avatarId = configuration.getStringValue(sonePrefix + "/Profile/Avatar").getValue(null);
1154                 if (avatarId != null) {
1155                         profile.setAvatar(getImage(avatarId).orNull());
1156                 }
1157
1158                 /* load options. */
1159                 sone.getOptions().getBooleanOption("AutoFollow").set(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
1160                 sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").set(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
1161                 sone.getOptions().getBooleanOption("ShowNotification/NewSones").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").getValue(null));
1162                 sone.getOptions().getBooleanOption("ShowNotification/NewPosts").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").getValue(null));
1163                 sone.getOptions().getBooleanOption("ShowNotification/NewReplies").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").getValue(null));
1164                 sone.getOptions().<ShowCustomAvatars>getEnumOption("ShowCustomAvatars").set(ShowCustomAvatars.valueOf(configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").getValue(ShowCustomAvatars.NEVER.name())));
1165
1166                 /* if we’re still here, Sone was loaded successfully. */
1167                 synchronized (sone) {
1168                         sone.setTime(soneTime);
1169                         sone.setProfile(profile);
1170                         sone.setPosts(posts);
1171                         sone.setReplies(replies);
1172                         sone.setLikePostIds(likedPostIds);
1173                         sone.setLikeReplyIds(likedReplyIds);
1174                         for (String friendId : friends) {
1175                                 followSone(sone, friendId);
1176                         }
1177                         for (Album album : sone.getRootAlbum().getAlbums()) {
1178                                 album.remove();
1179                         }
1180                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1181                 }
1182                 synchronized (knownSones) {
1183                         for (String friend : friends) {
1184                                 knownSones.add(friend);
1185                         }
1186                 }
1187                 database.storePosts(sone, posts);
1188                 for (Post post : posts) {
1189                         post.setKnown(true);
1190                 }
1191                 database.storePostReplies(sone, replies);
1192                 for (PostReply reply : replies) {
1193                         reply.setKnown(true);
1194                 }
1195
1196                 logger.info(String.format("Sone loaded successfully: %s", sone));
1197         }
1198
1199         /**
1200          * Deletes the given post.
1201          *
1202          * @param post
1203          *              The post to delete
1204          */
1205         public void deletePost(Post post) {
1206                 if (!post.getSone().isLocal()) {
1207                         logger.log(Level.WARNING, String.format("Tried to delete post of non-local Sone: %s", post.getSone()));
1208                         return;
1209                 }
1210                 database.removePost(post);
1211                 eventBus.post(new PostRemovedEvent(post));
1212                 markPostKnown(post);
1213                 touchConfiguration();
1214         }
1215
1216         /**
1217          * Marks the given post as known, if it is currently not a known post
1218          * (according to {@link Post#isKnown()}).
1219          *
1220          * @param post
1221          *              The post to mark as known
1222          */
1223         public void markPostKnown(Post post) {
1224                 post.setKnown(true);
1225                 eventBus.post(new MarkPostKnownEvent(post));
1226                 touchConfiguration();
1227                 for (PostReply reply : getReplies(post.getId())) {
1228                         markReplyKnown(reply);
1229                 }
1230         }
1231
1232         /**
1233          * Bookmarks the given post.
1234          *
1235          * @param post
1236          *              The post to bookmark
1237          */
1238         public void bookmark(Post post) {
1239                 bookmarkPost(post.getId());
1240         }
1241
1242         /**
1243          * Bookmarks the post with the given ID.
1244          *
1245          * @param id
1246          *              The ID of the post to bookmark
1247          */
1248         public void bookmarkPost(String id) {
1249                 synchronized (bookmarkedPosts) {
1250                         bookmarkedPosts.add(id);
1251                 }
1252         }
1253
1254         /**
1255          * Removes the given post from the bookmarks.
1256          *
1257          * @param post
1258          *              The post to unbookmark
1259          */
1260         public void unbookmark(Post post) {
1261                 unbookmarkPost(post.getId());
1262         }
1263
1264         /**
1265          * Removes the post with the given ID from the bookmarks.
1266          *
1267          * @param id
1268          *              The ID of the post to unbookmark
1269          */
1270         public void unbookmarkPost(String id) {
1271                 synchronized (bookmarkedPosts) {
1272                         bookmarkedPosts.remove(id);
1273                 }
1274         }
1275
1276         /**
1277          * Deletes the given reply.
1278          *
1279          * @param reply
1280          *              The reply to delete
1281          */
1282         public void deleteReply(PostReply reply) {
1283                 Sone sone = reply.getSone();
1284                 if (!sone.isLocal()) {
1285                         logger.log(Level.FINE, String.format("Tried to delete non-local reply: %s", reply));
1286                         return;
1287                 }
1288                 database.removePostReply(reply);
1289                 markReplyKnown(reply);
1290                 sone.removeReply(reply);
1291                 touchConfiguration();
1292         }
1293
1294         /**
1295          * Marks the given reply as known, if it is currently not a known reply
1296          * (according to {@link Reply#isKnown()}).
1297          *
1298          * @param reply
1299          *              The reply to mark as known
1300          */
1301         public void markReplyKnown(PostReply reply) {
1302                 boolean previouslyKnown = reply.isKnown();
1303                 reply.setKnown(true);
1304                 eventBus.post(new MarkPostReplyKnownEvent(reply));
1305                 if (!previouslyKnown) {
1306                         touchConfiguration();
1307                 }
1308         }
1309
1310         /**
1311          * Creates a new image.
1312          *
1313          * @param sone
1314          *              The Sone creating the image
1315          * @param album
1316          *              The album the image will be inserted into
1317          * @param temporaryImage
1318          *              The temporary image to create the image from
1319          * @return The newly created image
1320          */
1321         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1322                 checkNotNull(sone, "sone must not be null");
1323                 checkNotNull(album, "album must not be null");
1324                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1325                 checkArgument(sone.isLocal(), "sone must be a local Sone");
1326                 checkArgument(sone.equals(album.getSone()), "album must belong to the given Sone");
1327                 Image image = album.newImageBuilder().withId(temporaryImage.getId()).sized(temporaryImage.getWidth(), temporaryImage.getHeight()).build(imageCreated());
1328                 imageInserter.insertImage(temporaryImage, image);
1329                 return image;
1330         }
1331
1332         /**
1333          * Deletes the given image. This method will also delete a matching temporary
1334          * image.
1335          *
1336          * @param image
1337          *              The image to delete
1338          * @see #deleteTemporaryImage(TemporaryImage)
1339          */
1340         public void deleteImage(Image image) {
1341                 checkNotNull(image, "image must not be null");
1342                 checkArgument(image.getSone().isLocal(), "image must belong to a local Sone");
1343                 deleteTemporaryImage(image.getId());
1344                 image.remove();
1345                 touchConfiguration();
1346         }
1347
1348         /**
1349          * Creates a new temporary image.
1350          *
1351          * @param mimeType
1352          *              The MIME type of the temporary image
1353          * @param imageData
1354          *              The encoded data of the image
1355          * @return The temporary image
1356          */
1357         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData, int width, int height) {
1358                 TemporaryImage temporaryImage = new TemporaryImage(mimeType, imageData, width, height);
1359                 synchronized (temporaryImages) {
1360                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
1361                 }
1362                 return temporaryImage;
1363         }
1364
1365         /**
1366          * Deletes the given temporary image.
1367          *
1368          * @param temporaryImage
1369          *              The temporary image to delete
1370          */
1371         public void deleteTemporaryImage(TemporaryImage temporaryImage) {
1372                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1373                 deleteTemporaryImage(temporaryImage.getId());
1374         }
1375
1376         /**
1377          * Deletes the temporary image with the given ID.
1378          *
1379          * @param imageId
1380          *              The ID of the temporary image to delete
1381          */
1382         public void deleteTemporaryImage(String imageId) {
1383                 checkNotNull(imageId, "imageId must not be null");
1384                 synchronized (temporaryImages) {
1385                         temporaryImages.remove(imageId);
1386                 }
1387                 Optional<Image> image = getImage(imageId);
1388                 if (image.isPresent()) {
1389                         imageInserter.cancelImageInsert(image.get());
1390                 }
1391         }
1392
1393         /**
1394          * Notifies the core that the configuration, either of the core or of a single
1395          * local Sone, has changed, and that the configuration should be saved.
1396          */
1397         public void touchConfiguration() {
1398                 lastConfigurationUpdate = System.currentTimeMillis();
1399         }
1400
1401         //
1402         // SERVICE METHODS
1403         //
1404
1405         @Override
1406         public void serviceStart() {
1407                 loadConfiguration();
1408                 updateChecker.start();
1409                 identityManager.start();
1410                 webOfTrustUpdater.init();
1411                 webOfTrustUpdater.start();
1412                 database.start();
1413         }
1414
1415         @Override
1416         public void serviceRun() {
1417                 long lastSaved = System.currentTimeMillis();
1418                 while (!shouldStop()) {
1419                         sleep(1000);
1420                         long now = System.currentTimeMillis();
1421                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1422                                 for (Sone localSone : getLocalSones()) {
1423                                         saveSone(localSone);
1424                                 }
1425                                 saveConfiguration();
1426                                 lastSaved = now;
1427                         }
1428                 }
1429         }
1430
1431         @Override
1432         public void serviceStop() {
1433                 localElementTicker.shutdownNow();
1434                 synchronized (sones) {
1435                         for (Entry<Sone, SoneInserter> soneInserter : soneInserters.entrySet()) {
1436                                 soneInserter.getValue().stop();
1437                                 saveSone(soneInserter.getKey());
1438                         }
1439                 }
1440                 saveConfiguration();
1441                 database.stop();
1442                 webOfTrustUpdater.stop();
1443                 updateChecker.stop();
1444                 soneDownloader.stop();
1445                 soneDownloaders.shutdown();
1446                 identityManager.stop();
1447         }
1448
1449         //
1450         // PRIVATE METHODS
1451         //
1452
1453         /**
1454          * Saves the given Sone. This will persist all local settings for the given
1455          * Sone, such as the friends list and similar, private options.
1456          *
1457          * @param sone
1458          *              The Sone to save
1459          */
1460         private synchronized void saveSone(Sone sone) {
1461                 if (!sone.isLocal()) {
1462                         logger.log(Level.FINE, String.format("Tried to save non-local Sone: %s", sone));
1463                         return;
1464                 }
1465                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1466                         logger.log(Level.WARNING, String.format("Local Sone without OwnIdentity found, refusing to save: %s", sone));
1467                         return;
1468                 }
1469
1470                 logger.log(Level.INFO, String.format("Saving Sone: %s", sone));
1471                 try {
1472                         /* save Sone into configuration. */
1473                         String sonePrefix = "Sone/" + sone.getId();
1474                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1475                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1476
1477                         /* save profile. */
1478                         Profile profile = sone.getProfile();
1479                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1480                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1481                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1482                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1483                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1484                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1485                         configuration.getStringValue(sonePrefix + "/Profile/Avatar").setValue(profile.getAvatar());
1486
1487                         /* save profile fields. */
1488                         int fieldCounter = 0;
1489                         for (Field profileField : profile.getFields()) {
1490                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
1491                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
1492                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
1493                         }
1494                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
1495
1496                         /* save posts. */
1497                         int postCounter = 0;
1498                         for (Post post : sone.getPosts()) {
1499                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1500                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1501                                 configuration.getStringValue(postPrefix + "/Recipient").setValue(post.getRecipientId().orNull());
1502                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1503                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1504                         }
1505                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1506
1507                         /* save replies. */
1508                         int replyCounter = 0;
1509                         for (PostReply reply : sone.getReplies()) {
1510                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1511                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1512                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPostId());
1513                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1514                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1515                         }
1516                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1517
1518                         /* save post likes. */
1519                         int postLikeCounter = 0;
1520                         for (String postId : sone.getLikedPostIds()) {
1521                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1522                         }
1523                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1524
1525                         /* save reply likes. */
1526                         int replyLikeCounter = 0;
1527                         for (String replyId : sone.getLikedReplyIds()) {
1528                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1529                         }
1530                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1531
1532                         /* save friends. */
1533                         int friendCounter = 0;
1534                         for (String friendId : sone.getFriends()) {
1535                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1536                         }
1537                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1538
1539                         /* save albums. first, collect in a flat structure, top-level first. */
1540                         List<Album> albums = from(sone.getRootAlbum().getAlbums()).transformAndConcat(Album.FLATTENER).toList();
1541
1542                         int albumCounter = 0;
1543                         for (Album album : albums) {
1544                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1545                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
1546                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
1547                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
1548                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent().equals(sone.getRootAlbum()) ? null : album.getParent().getId());
1549                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage().transform(GET_ID).orNull());
1550                         }
1551                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
1552
1553                         /* save images. */
1554                         int imageCounter = 0;
1555                         for (Album album : albums) {
1556                                 for (Image image : album.getImages()) {
1557                                         if (!image.isInserted()) {
1558                                                 continue;
1559                                         }
1560                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1561                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
1562                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
1563                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
1564                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
1565                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
1566                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
1567                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
1568                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
1569                                 }
1570                         }
1571                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
1572
1573                         /* save options. */
1574                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
1575                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewSones").getReal());
1576                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewPosts").getReal());
1577                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewReplies").getReal());
1578                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").getReal());
1579                         configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").setValue(sone.getOptions().<ShowCustomAvatars>getEnumOption("ShowCustomAvatars").get().name());
1580
1581                         configuration.save();
1582
1583                         webOfTrustUpdater.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
1584
1585                         logger.log(Level.INFO, String.format("Sone %s saved.", sone));
1586                 } catch (ConfigurationException ce1) {
1587                         logger.log(Level.WARNING, String.format("Could not save Sone: %s", sone), ce1);
1588                 }
1589         }
1590
1591         /** Saves the current options. */
1592         private void saveConfiguration() {
1593                 synchronized (configuration) {
1594                         if (storingConfiguration) {
1595                                 logger.log(Level.FINE, "Already storing configuration…");
1596                                 return;
1597                         }
1598                         storingConfiguration = true;
1599                 }
1600
1601                 /* store the options first. */
1602                 try {
1603                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
1604                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
1605                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
1606                         configuration.getIntValue("Option/ImagesPerPage").setValue(options.getIntegerOption("ImagesPerPage").getReal());
1607                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
1608                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
1609                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
1610                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
1611                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
1612                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
1613                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
1614                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
1615
1616                         /* save known Sones. */
1617                         int soneCounter = 0;
1618                         synchronized (knownSones) {
1619                                 for (String knownSoneId : knownSones) {
1620                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
1621                                 }
1622                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
1623                         }
1624
1625                         /* save Sone following times. */
1626                         soneCounter = 0;
1627                         synchronized (soneFollowingTimes) {
1628                                 for (Entry<String, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
1629                                         configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey());
1630                                         configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
1631                                         ++soneCounter;
1632                                 }
1633                                 configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
1634                         }
1635
1636                         /* save known posts. */
1637                         database.save();
1638
1639                         /* save bookmarked posts. */
1640                         int bookmarkedPostCounter = 0;
1641                         synchronized (bookmarkedPosts) {
1642                                 for (String bookmarkedPostId : bookmarkedPosts) {
1643                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
1644                                 }
1645                         }
1646                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
1647
1648                         /* now save it. */
1649                         configuration.save();
1650
1651                 } catch (ConfigurationException ce1) {
1652                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
1653                 } catch (DatabaseException de1) {
1654                         logger.log(Level.SEVERE, "Could not save database!", de1);
1655                 } finally {
1656                         synchronized (configuration) {
1657                                 storingConfiguration = false;
1658                         }
1659                 }
1660         }
1661
1662         /** Loads the configuration. */
1663         private void loadConfiguration() {
1664                 /* create options. */
1665                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangePredicate(0, Integer.MAX_VALUE), new OptionWatcher<Integer>() {
1666
1667                         @Override
1668                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
1669                                 SoneInserter.setInsertionDelay(newValue);
1670                         }
1671
1672                 }));
1673                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
1674                 options.addIntegerOption("ImagesPerPage", new DefaultOption<Integer>(9, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
1675                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, Predicates.<Integer>or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
1676                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, Predicates.<Integer>or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
1677                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
1678                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangePredicate(0, 100)));
1679                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangePredicate(-100, 100)));
1680                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
1681                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, new OptionWatcher<Boolean>() {
1682
1683                         @Override
1684                         @SuppressWarnings("synthetic-access")
1685                         public void optionChanged(Option<Boolean> option, Boolean oldValue, Boolean newValue) {
1686                                 fcpInterface.setActive(newValue);
1687                         }
1688                 }));
1689                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, new OptionWatcher<Integer>() {
1690
1691                         @Override
1692                         @SuppressWarnings("synthetic-access")
1693                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
1694                                 fcpInterface.setFullAccessRequired(FullAccessRequired.values()[newValue]);
1695                         }
1696
1697                 }));
1698
1699                 loadConfigurationValue("InsertionDelay");
1700                 loadConfigurationValue("PostsPerPage");
1701                 loadConfigurationValue("ImagesPerPage");
1702                 loadConfigurationValue("CharactersPerPost");
1703                 loadConfigurationValue("PostCutOffLength");
1704                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
1705                 loadConfigurationValue("PositiveTrust");
1706                 loadConfigurationValue("NegativeTrust");
1707                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
1708                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
1709                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
1710
1711                 /* load known Sones. */
1712                 int soneCounter = 0;
1713                 while (true) {
1714                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
1715                         if (knownSoneId == null) {
1716                                 break;
1717                         }
1718                         synchronized (knownSones) {
1719                                 knownSones.add(knownSoneId);
1720                         }
1721                 }
1722
1723                 /* load Sone following times. */
1724                 soneCounter = 0;
1725                 while (true) {
1726                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
1727                         if (soneId == null) {
1728                                 break;
1729                         }
1730                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
1731                         synchronized (soneFollowingTimes) {
1732                                 soneFollowingTimes.put(soneId, time);
1733                         }
1734                         ++soneCounter;
1735                 }
1736
1737                 /* load bookmarked posts. */
1738                 int bookmarkedPostCounter = 0;
1739                 while (true) {
1740                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
1741                         if (bookmarkedPostId == null) {
1742                                 break;
1743                         }
1744                         synchronized (bookmarkedPosts) {
1745                                 bookmarkedPosts.add(bookmarkedPostId);
1746                         }
1747                 }
1748
1749         }
1750
1751         /**
1752          * Loads an {@link Integer} configuration value for the option with the given
1753          * name, logging validation failures.
1754          *
1755          * @param optionName
1756          *              The name of the option to load
1757          */
1758         private void loadConfigurationValue(String optionName) {
1759                 try {
1760                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
1761                 } catch (IllegalArgumentException iae1) {
1762                         logger.log(Level.WARNING, String.format("Invalid value for %s in configuration, using default.", optionName));
1763                 }
1764         }
1765
1766         /**
1767          * Notifies the core that a new {@link OwnIdentity} was added.
1768          *
1769          * @param ownIdentityAddedEvent
1770          *              The event
1771          */
1772         @Subscribe
1773         public void ownIdentityAdded(OwnIdentityAddedEvent ownIdentityAddedEvent) {
1774                 OwnIdentity ownIdentity = ownIdentityAddedEvent.ownIdentity();
1775                 logger.log(Level.FINEST, String.format("Adding OwnIdentity: %s", ownIdentity));
1776                 if (ownIdentity.hasContext("Sone")) {
1777                         addLocalSone(ownIdentity);
1778                 }
1779         }
1780
1781         /**
1782          * Notifies the core that an {@link OwnIdentity} was removed.
1783          *
1784          * @param ownIdentityRemovedEvent
1785          *              The event
1786          */
1787         @Subscribe
1788         public void ownIdentityRemoved(OwnIdentityRemovedEvent ownIdentityRemovedEvent) {
1789                 OwnIdentity ownIdentity = ownIdentityRemovedEvent.ownIdentity();
1790                 logger.log(Level.FINEST, String.format("Removing OwnIdentity: %s", ownIdentity));
1791                 trustedIdentities.removeAll(ownIdentity);
1792         }
1793
1794         /**
1795          * Notifies the core that a new {@link Identity} was added.
1796          *
1797          * @param identityAddedEvent
1798          *              The event
1799          */
1800         @Subscribe
1801         public void identityAdded(IdentityAddedEvent identityAddedEvent) {
1802                 Identity identity = identityAddedEvent.identity();
1803                 logger.log(Level.FINEST, String.format("Adding Identity: %s", identity));
1804                 trustedIdentities.put(identityAddedEvent.ownIdentity(), identity);
1805                 addRemoteSone(identity);
1806         }
1807
1808         /**
1809          * Notifies the core that an {@link Identity} was updated.
1810          *
1811          * @param identityUpdatedEvent
1812          *              The event
1813          */
1814         @Subscribe
1815         public void identityUpdated(IdentityUpdatedEvent identityUpdatedEvent) {
1816                 final Identity identity = identityUpdatedEvent.identity();
1817                 soneDownloaders.execute(new Runnable() {
1818
1819                         @Override
1820                         @SuppressWarnings("synthetic-access")
1821                         public void run() {
1822                                 Optional<Sone> sone = getRemoteSone(identity.getId());
1823                                 sone.get().setIdentity(identity);
1824                                 sone.get().setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.get().getLatestEdition()));
1825                                 soneDownloader.addSone(sone.get());
1826                                 soneDownloader.fetchSone(sone.get());
1827                         }
1828                 });
1829         }
1830
1831         /**
1832          * Notifies the core that an {@link Identity} was removed.
1833          *
1834          * @param identityRemovedEvent
1835          *              The event
1836          */
1837         @Subscribe
1838         public void identityRemoved(IdentityRemovedEvent identityRemovedEvent) {
1839                 OwnIdentity ownIdentity = identityRemovedEvent.ownIdentity();
1840                 Identity identity = identityRemovedEvent.identity();
1841                 trustedIdentities.remove(ownIdentity, identity);
1842                 boolean foundIdentity = false;
1843                 for (Entry<OwnIdentity, Collection<Identity>> trustedIdentity : trustedIdentities.asMap().entrySet()) {
1844                         if (trustedIdentity.getKey().equals(ownIdentity)) {
1845                                 continue;
1846                         }
1847                         if (trustedIdentity.getValue().contains(identity)) {
1848                                 foundIdentity = true;
1849                         }
1850                 }
1851                 if (foundIdentity) {
1852                         /* some local identity still trusts this identity, don’t remove. */
1853                         return;
1854                 }
1855                 Optional<Sone> sone = getSone(identity.getId());
1856                 if (!sone.isPresent()) {
1857                         /* TODO - we don’t have the Sone anymore. should this happen? */
1858                         return;
1859                 }
1860                 database.removePosts(sone.get());
1861                 for (Post post : sone.get().getPosts()) {
1862                         eventBus.post(new PostRemovedEvent(post));
1863                 }
1864                 database.removePostReplies(sone.get());
1865                 for (PostReply reply : sone.get().getReplies()) {
1866                         eventBus.post(new PostReplyRemovedEvent(reply));
1867                 }
1868                 synchronized (sones) {
1869                         sones.remove(identity.getId());
1870                 }
1871                 eventBus.post(new SoneRemovedEvent(sone.get()));
1872         }
1873
1874         /**
1875          * Deletes the temporary image.
1876          *
1877          * @param imageInsertFinishedEvent
1878          *              The event
1879          */
1880         @Subscribe
1881         public void imageInsertFinished(ImageInsertFinishedEvent imageInsertFinishedEvent) {
1882                 logger.log(Level.WARNING, String.format("Image insert finished for %s: %s", imageInsertFinishedEvent.image(), imageInsertFinishedEvent.resultingUri()));
1883                 imageInsertFinishedEvent.image().modify().setKey(imageInsertFinishedEvent.resultingUri().toString()).update();
1884                 deleteTemporaryImage(imageInsertFinishedEvent.image().getId());
1885                 touchConfiguration();
1886         }
1887
1888         public Optional<PostCreated> postCreated() {
1889                 return Optional.<PostCreated>of(new PostCreated() {
1890                         @Override
1891                         public void postCreated(final Post post) {
1892                                 if (post.isKnown()) {
1893                                         return;
1894                                 }
1895                                 eventBus.post(new NewPostFoundEvent(post));
1896                                 if (post.getSone().isLocal()) {
1897                                         localElementTicker.schedule(new Runnable() {
1898                                                 @Override
1899                                                 public void run() {
1900                                                         markPostKnown(post);
1901                                                 }
1902                                         }, 10, TimeUnit.SECONDS);
1903                                 }
1904                         }
1905                 });
1906         }
1907
1908         public Optional<PostReplyCreated> postReplyCreated() {
1909                 return Optional.<PostReplyCreated>of(new PostReplyCreated() {
1910                         @Override
1911                         public void postReplyCreated(final PostReply postReply) {
1912                                 if (postReply.isKnown()) {
1913                                         return;
1914                                 }
1915                                 eventBus.post(new NewPostReplyFoundEvent(postReply));
1916                                 if (postReply.getSone().isLocal()) {
1917                                         localElementTicker.schedule(new Runnable() {
1918
1919                                                 /**
1920                                                  * {@inheritDoc}
1921                                                  */
1922                                                 @Override
1923                                                 public void run() {
1924                                                         markReplyKnown(postReply);
1925                                                 }
1926                                         }, 10, TimeUnit.SECONDS);
1927                                 }
1928                         }
1929                 });
1930         }
1931
1932         public Optional<ImageCreated> imageCreated() {
1933                 return Optional.<ImageCreated>of(new ImageCreated() {
1934                         @Override
1935                         public void imageCreated(Image image) {
1936                                 /* nothing happens here yet. */
1937                         }
1938                 });
1939         }
1940
1941 }