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

   1 /*
   2  * Sone - Core.java - Copyright © 2010 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.sone.core;
  19
  20 import java.net.MalformedURLException;
  21 import java.util.ArrayList;
  22 import java.util.Collections;
  23 import java.util.HashMap;
  24 import java.util.HashSet;
  25 import java.util.List;
  26 import java.util.Map;
  27 import java.util.Set;
  28 import java.util.logging.Level;
  29 import java.util.logging.Logger;
  30
  31 import net.pterodactylus.sone.core.Options.DefaultOption;
  32 import net.pterodactylus.sone.core.Options.Option;
  33 import net.pterodactylus.sone.core.Options.OptionWatcher;
  34 import net.pterodactylus.sone.data.Post;
  35 import net.pterodactylus.sone.data.Profile;
  36 import net.pterodactylus.sone.data.Reply;
  37 import net.pterodactylus.sone.data.Sone;
  38 import net.pterodactylus.sone.freenet.wot.Identity;
  39 import net.pterodactylus.sone.freenet.wot.IdentityListener;
  40 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  41 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  42 import net.pterodactylus.util.config.Configuration;
  43 import net.pterodactylus.util.config.ConfigurationException;
  44 import net.pterodactylus.util.logging.Logging;
  45 import net.pterodactylus.util.number.Numbers;
  46 import freenet.keys.FreenetURI;
  47
  48 /**
  49  * The Sone core.
  50  *
  51  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  52  */
  53 public class Core implements IdentityListener {
  54
  55         /**
  56          * Enumeration for the possible states of a {@link Sone}.
  57          *
  58          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  59          */
  60         public enum SoneStatus {
  61
  62                 /** The Sone is unknown, i.e. not yet downloaded. */
  63                 unknown,
  64
  65                 /** The Sone is idle, i.e. not being downloaded or inserted. */
  66                 idle,
  67
  68                 /** The Sone is currently being inserted. */
  69                 inserting,
  70
  71                 /** The Sone is currently being downloaded. */
  72                 downloading,
  73         }
  74
  75         /** The logger. */
  76         private static final Logger logger = Logging.getLogger(Core.class);
  77
  78         /** The options. */
  79         private final Options options = new Options();
  80
  81         /** The configuration. */
  82         private final Configuration configuration;
  83
  84         /** The identity manager. */
  85         private final IdentityManager identityManager;
  86
  87         /** Interface to freenet. */
  88         private final FreenetInterface freenetInterface;
  89
  90         /** The Sone downloader. */
  91         private final SoneDownloader soneDownloader;
  92
  93         /** The Sones’ statuses. */
  94         /* synchronize access on itself. */
  95         private final Map<Sone, SoneStatus> soneStatuses = new HashMap<Sone, SoneStatus>();
  96
  97         /** Sone inserters. */
  98         /* synchronize access on this on localSones. */
  99         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 100
 101         /** All local Sones. */
 102         /* synchronize access on this on itself. */
 103         private Map<String, Sone> localSones = new HashMap<String, Sone>();
 104
 105         /** All remote Sones. */
 106         /* synchronize access on this on itself. */
 107         private Map<String, Sone> remoteSones = new HashMap<String, Sone>();
 108
 109         /** All new Sones. */
 110         private Set<Sone> newSones = new HashSet<Sone>();
 111
 112         /** All posts. */
 113         private Map<String, Post> posts = new HashMap<String, Post>();
 114
 115         /** All replies. */
 116         private Map<String, Reply> replies = new HashMap<String, Reply>();
 117
 118         /**
 119          * Creates a new core.
 120          *
 121          * @param configuration
 122          *            The configuration of the core
 123          * @param freenetInterface
 124          *            The freenet interface
 125          * @param identityManager
 126          *            The identity manager
 127          */
 128         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager) {
 129                 this.configuration = configuration;
 130                 this.freenetInterface = freenetInterface;
 131                 this.identityManager = identityManager;
 132                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 133         }
 134
 135         //
 136         // ACCESSORS
 137         //
 138
 139         /**
 140          * Returns the options used by the core.
 141          *
 142          * @return The options of the core
 143          */
 144         public Options getOptions() {
 145                 return options;
 146         }
 147
 148         /**
 149          * Returns the identity manager used by the core.
 150          *
 151          * @return The identity manager
 152          */
 153         public IdentityManager getIdentityManager() {
 154                 return identityManager;
 155         }
 156
 157         /**
 158          * Returns the status of the given Sone.
 159          *
 160          * @param sone
 161          *            The Sone to get the status for
 162          * @return The status of the Sone
 163          */
 164         public SoneStatus getSoneStatus(Sone sone) {
 165                 synchronized (soneStatuses) {
 166                         return soneStatuses.get(sone);
 167                 }
 168         }
 169
 170         /**
 171          * Sets the status of the given Sone.
 172          *
 173          * @param sone
 174          *            The Sone to set the status of
 175          * @param soneStatus
 176          *            The status to set
 177          */
 178         public void setSoneStatus(Sone sone, SoneStatus soneStatus) {
 179                 synchronized (soneStatuses) {
 180                         soneStatuses.put(sone, soneStatus);
 181                 }
 182         }
 183
 184         /**
 185          * Returns all Sones, remote and local.
 186          *
 187          * @return All Sones
 188          */
 189         public Set<Sone> getSones() {
 190                 Set<Sone> allSones = new HashSet<Sone>();
 191                 allSones.addAll(getLocalSones());
 192                 allSones.addAll(getRemoteSones());
 193                 return allSones;
 194         }
 195
 196         /**
 197          * Returns the Sone with the given ID, regardless whether it’s local or
 198          * remote.
 199          *
 200          * @param id
 201          *            The ID of the Sone to get
 202          * @return The Sone with the given ID, or {@code null} if there is no such
 203          *         Sone
 204          */
 205         public Sone getSone(String id) {
 206                 if (isLocalSone(id)) {
 207                         return getLocalSone(id);
 208                 }
 209                 return getRemoteSone(id);
 210         }
 211
 212         /**
 213          * Returns whether the given Sone is a local Sone.
 214          *
 215          * @param sone
 216          *            The Sone to check for its locality
 217          * @return {@code true} if the given Sone is local, {@code false} otherwise
 218          */
 219         public boolean isLocalSone(Sone sone) {
 220                 synchronized (localSones) {
 221                         return localSones.containsKey(sone.getId());
 222                 }
 223         }
 224
 225         /**
 226          * Returns whether the given ID is the ID of a local Sone.
 227          *
 228          * @param id
 229          *            The Sone ID to check for its locality
 230          * @return {@code true} if the given ID is a local Sone, {@code false}
 231          *         otherwise
 232          */
 233         public boolean isLocalSone(String id) {
 234                 synchronized (localSones) {
 235                         return localSones.containsKey(id);
 236                 }
 237         }
 238
 239         /**
 240          * Returns all local Sones.
 241          *
 242          * @return All local Sones
 243          */
 244         public Set<Sone> getLocalSones() {
 245                 synchronized (localSones) {
 246                         return new HashSet<Sone>(localSones.values());
 247                 }
 248         }
 249
 250         /**
 251          * Returns the local Sone with the given ID.
 252          *
 253          * @param id
 254          *            The ID of the Sone to get
 255          * @return The Sone with the given ID
 256          */
 257         public Sone getLocalSone(String id) {
 258                 synchronized (localSones) {
 259                         Sone sone = localSones.get(id);
 260                         if (sone == null) {
 261                                 sone = new Sone(id);
 262                                 localSones.put(id, sone);
 263                         }
 264                         return sone;
 265                 }
 266         }
 267
 268         /**
 269          * Returns all remote Sones.
 270          *
 271          * @return All remote Sones
 272          */
 273         public Set<Sone> getRemoteSones() {
 274                 synchronized (remoteSones) {
 275                         return new HashSet<Sone>(remoteSones.values());
 276                 }
 277         }
 278
 279         /**
 280          * Returns the remote Sone with the given ID.
 281          *
 282          * @param id
 283          *            The ID of the remote Sone to get
 284          * @return The Sone with the given ID
 285          */
 286         public Sone getRemoteSone(String id) {
 287                 synchronized (remoteSones) {
 288                         Sone sone = remoteSones.get(id);
 289                         if (sone == null) {
 290                                 sone = new Sone(id);
 291                                 remoteSones.put(id, sone);
 292                         }
 293                         return sone;
 294                 }
 295         }
 296
 297         /**
 298          * Returns whether the given Sone is a remote Sone.
 299          *
 300          * @param sone
 301          *            The Sone to check
 302          * @return {@code true} if the given Sone is a remote Sone, {@code false}
 303          *         otherwise
 304          */
 305         public boolean isRemoteSone(Sone sone) {
 306                 synchronized (remoteSones) {
 307                         return remoteSones.containsKey(sone.getId());
 308                 }
 309         }
 310
 311         /**
 312          * Returns whether the Sone with the given ID is a remote Sone.
 313          *
 314          * @param id
 315          *            The ID of the Sone to check
 316          * @return {@code true} if the Sone with the given ID is a remote Sone,
 317          *         {@code false} otherwise
 318          */
 319         public boolean isRemoteSone(String id) {
 320                 synchronized (remoteSones) {
 321                         return remoteSones.containsKey(id);
 322                 }
 323         }
 324
 325         /**
 326          * Returns the post with the given ID.
 327          *
 328          * @param postId
 329          *            The ID of the post to get
 330          * @return The post, or {@code null} if there is no such post
 331          */
 332         public Post getPost(String postId) {
 333                 synchronized (posts) {
 334                         Post post = posts.get(postId);
 335                         if (post == null) {
 336                                 post = new Post(postId);
 337                                 posts.put(postId, post);
 338                         }
 339                         return post;
 340                 }
 341         }
 342
 343         /**
 344          * Returns the reply with the given ID.
 345          *
 346          * @param replyId
 347          *            The ID of the reply to get
 348          * @return The reply, or {@code null} if there is no such reply
 349          */
 350         public Reply getReply(String replyId) {
 351                 synchronized (replies) {
 352                         Reply reply = replies.get(replyId);
 353                         if (reply == null) {
 354                                 reply = new Reply(replyId);
 355                                 replies.put(replyId, reply);
 356                         }
 357                         return reply;
 358                 }
 359         }
 360
 361         /**
 362          * Returns all replies for the given post, order ascending by time.
 363          *
 364          * @param post
 365          *            The post to get all replies for
 366          * @return All replies for the given post
 367          */
 368         public List<Reply> getReplies(Post post) {
 369                 Set<Sone> sones = getSones();
 370                 List<Reply> replies = new ArrayList<Reply>();
 371                 for (Sone sone : sones) {
 372                         for (Reply reply : sone.getReplies()) {
 373                                 if (reply.getPost().equals(post)) {
 374                                         replies.add(reply);
 375                                 }
 376                         }
 377                 }
 378                 Collections.sort(replies, Reply.TIME_COMPARATOR);
 379                 return replies;
 380         }
 381
 382         /**
 383          * Returns all Sones that have liked the given post.
 384          *
 385          * @param post
 386          *            The post to get the liking Sones for
 387          * @return The Sones that like the given post
 388          */
 389         public Set<Sone> getLikes(Post post) {
 390                 Set<Sone> sones = new HashSet<Sone>();
 391                 for (Sone sone : getSones()) {
 392                         if (sone.getLikedPostIds().contains(post.getId())) {
 393                                 sones.add(sone);
 394                         }
 395                 }
 396                 return sones;
 397         }
 398
 399         /**
 400          * Returns all Sones that have liked the given reply.
 401          *
 402          * @param reply
 403          *            The reply to get the liking Sones for
 404          * @return The Sones that like the given reply
 405          */
 406         public Set<Sone> getLikes(Reply reply) {
 407                 Set<Sone> sones = new HashSet<Sone>();
 408                 for (Sone sone : getSones()) {
 409                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 410                                 sones.add(sone);
 411                         }
 412                 }
 413                 return sones;
 414         }
 415
 416         //
 417         // ACTIONS
 418         //
 419
 420         /**
 421          * Adds a local Sone from the given ID which has to be the ID of an own
 422          * identity.
 423          *
 424          * @param id
 425          *            The ID of an own identity to add a Sone for
 426          * @return The added (or already existing) Sone
 427          */
 428         public Sone addLocalSone(String id) {
 429                 synchronized (localSones) {
 430                         if (localSones.containsKey(id)) {
 431                                 logger.log(Level.FINE, "Tried to add known local Sone: %s", id);
 432                                 return localSones.get(id);
 433                         }
 434                         OwnIdentity ownIdentity = identityManager.getOwnIdentity(id);
 435                         if (ownIdentity == null) {
 436                                 logger.log(Level.INFO, "Invalid Sone ID: %s", id);
 437                                 return null;
 438                         }
 439                         return addLocalSone(ownIdentity);
 440                 }
 441         }
 442
 443         /**
 444          * Adds a local Sone from the given own identity.
 445          *
 446          * @param ownIdentity
 447          *            The own identity to create a Sone from
 448          * @return The added (or already existing) Sone
 449          */
 450         public Sone addLocalSone(OwnIdentity ownIdentity) {
 451                 if (ownIdentity == null) {
 452                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 453                         return null;
 454                 }
 455                 synchronized (localSones) {
 456                         final Sone sone;
 457                         try {
 458                                 sone = getLocalSone(ownIdentity.getId()).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 459                                 sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 460                         } catch (MalformedURLException mue1) {
 461                                 logger.log(Level.SEVERE, "Could not convert the Identity’s URIs to Freenet URIs: " + ownIdentity.getInsertUri() + ", " + ownIdentity.getRequestUri(), mue1);
 462                                 return null;
 463                         }
 464                         /* TODO - load posts ’n stuff */
 465                         localSones.put(ownIdentity.getId(), sone);
 466                         SoneInserter soneInserter = new SoneInserter(this, freenetInterface, sone);
 467                         soneInserters.put(sone, soneInserter);
 468                         soneInserter.start();
 469                         setSoneStatus(sone, SoneStatus.idle);
 470                         loadSone(sone);
 471                         new Thread(new Runnable() {
 472
 473                                 @Override
 474                                 @SuppressWarnings("synthetic-access")
 475                                 public void run() {
 476                                         soneDownloader.fetchSone(sone);
 477                                 }
 478
 479                         }, "Sone Downloader").start();
 480                         return sone;
 481                 }
 482         }
 483
 484         /**
 485          * Creates a new Sone for the given own identity.
 486          *
 487          * @param ownIdentity
 488          *            The own identity to create a Sone for
 489          * @return The created Sone
 490          */
 491         public Sone createSone(OwnIdentity ownIdentity) {
 492                 identityManager.addContext(ownIdentity, "Sone");
 493                 Sone sone = addLocalSone(ownIdentity);
 494                 synchronized (sone) {
 495                         /* mark as modified so that it gets inserted immediately. */
 496                         sone.setModificationCounter(sone.getModificationCounter() + 1);
 497                 }
 498                 return sone;
 499         }
 500
 501         /**
 502          * Adds the Sone of the given identity.
 503          *
 504          * @param identity
 505          *            The identity whose Sone to add
 506          * @return The added or already existing Sone
 507          */
 508         public Sone addRemoteSone(Identity identity) {
 509                 if (identity == null) {
 510                         logger.log(Level.WARNING, "Given Identity is null!");
 511                         return null;
 512                 }
 513                 synchronized (remoteSones) {
 514                         boolean newSone = !isRemoteSone(identity.getId());
 515                         final Sone sone = getRemoteSone(identity.getId()).setIdentity(identity);
 516                         sone.setRequestUri(getSoneUri(identity.getRequestUri()));
 517                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 518                         if (newSone) {
 519                                 synchronized (newSones) {
 520                                         newSones.add(sone);
 521                                 }
 522                         }
 523                         remoteSones.put(identity.getId(), sone);
 524                         soneDownloader.addSone(sone);
 525                         setSoneStatus(sone, SoneStatus.unknown);
 526                         new Thread(new Runnable() {
 527
 528                                 @Override
 529                                 @SuppressWarnings("synthetic-access")
 530                                 public void run() {
 531                                         soneDownloader.fetchSone(sone);
 532                                 }
 533
 534                         }, "Sone Downloader").start();
 535                         return sone;
 536                 }
 537         }
 538
 539         /**
 540          * Updates the stores Sone with the given Sone.
 541          *
 542          * @param sone
 543          *            The updated Sone
 544          */
 545         public void updateSone(Sone sone) {
 546                 if (isRemoteSone(sone)) {
 547                         Sone storedSone = getRemoteSone(sone.getId());
 548                         if (!(sone.getTime() > storedSone.getTime())) {
 549                                 logger.log(Level.FINE, "Downloaded Sone %s is not newer than stored Sone %s.", new Object[] { sone, storedSone });
 550                                 return;
 551                         }
 552                         synchronized (posts) {
 553                                 for (Post post : storedSone.getPosts()) {
 554                                         posts.remove(post.getId());
 555                                 }
 556                                 for (Post post : sone.getPosts()) {
 557                                         posts.put(post.getId(), post);
 558                                 }
 559                         }
 560                         synchronized (replies) {
 561                                 for (Reply reply : storedSone.getReplies()) {
 562                                         replies.remove(reply.getId());
 563                                 }
 564                                 for (Reply reply : sone.getReplies()) {
 565                                         replies.put(reply.getId(), reply);
 566                                 }
 567                         }
 568                         synchronized (storedSone) {
 569                                 storedSone.setTime(sone.getTime());
 570                                 storedSone.setProfile(sone.getProfile());
 571                                 storedSone.setPosts(sone.getPosts());
 572                                 storedSone.setReplies(sone.getReplies());
 573                                 storedSone.setLikePostIds(sone.getLikedPostIds());
 574                                 storedSone.setLikeReplyIds(sone.getLikedReplyIds());
 575                                 storedSone.setLatestEdition(sone.getRequestUri().getEdition());
 576                                 storedSone.setModificationCounter(0);
 577                         }
 578                 }
 579         }
 580
 581         /**
 582          * Deletes the given Sone. This will remove the Sone from the
 583          * {@link #getLocalSone(String) local Sones}, stops its {@link SoneInserter}
 584          * and remove the context from its identity.
 585          *
 586          * @param sone
 587          *            The Sone to delete
 588          */
 589         public void deleteSone(Sone sone) {
 590                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
 591                         logger.log(Level.WARNING, "Tried to delete Sone of non-own identity: %s", sone);
 592                         return;
 593                 }
 594                 synchronized (localSones) {
 595                         if (!localSones.containsKey(sone.getId())) {
 596                                 logger.log(Level.WARNING, "Tried to delete non-local Sone: %s", sone);
 597                                 return;
 598                         }
 599                         localSones.remove(sone.getId());
 600                         soneInserters.remove(sone).stop();
 601                 }
 602                 identityManager.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
 603                 identityManager.removeProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition");
 604                 try {
 605                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
 606                 } catch (ConfigurationException ce1) {
 607                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
 608                 }
 609         }
 610
 611         /**
 612          * Loads and updates the given Sone from the configuration. If any error is
 613          * encountered, loading is aborted and the given Sone is not changed.
 614          *
 615          * @param sone
 616          *            The Sone to load and update
 617          */
 618         public void loadSone(Sone sone) {
 619                 if (!isLocalSone(sone)) {
 620                         logger.log(Level.FINE, "Tried to load non-local Sone: %s", sone);
 621                         return;
 622                 }
 623
 624                 /* load Sone. */
 625                 String sonePrefix = "Sone/" + sone.getId();
 626                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
 627                 if (soneTime == null) {
 628                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
 629                         return;
 630                 }
 631                 long soneModificationCounter = configuration.getLongValue(sonePrefix + "/ModificationCounter").getValue((long) 0);
 632
 633                 /* load profile. */
 634                 Profile profile = new Profile();
 635                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
 636                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
 637                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
 638                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
 639                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
 640                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
 641
 642                 /* load posts. */
 643                 Set<Post> posts = new HashSet<Post>();
 644                 while (true) {
 645                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
 646                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
 647                         if (postId == null) {
 648                                 break;
 649                         }
 650                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
 651                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
 652                         if ((postTime == 0) || (postText == null)) {
 653                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
 654                                 return;
 655                         }
 656                         posts.add(getPost(postId).setSone(sone).setTime(postTime).setText(postText));
 657                 }
 658
 659                 /* load replies. */
 660                 Set<Reply> replies = new HashSet<Reply>();
 661                 while (true) {
 662                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
 663                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
 664                         if (replyId == null) {
 665                                 break;
 666                         }
 667                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
 668                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
 669                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
 670                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
 671                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
 672                                 return;
 673                         }
 674                         replies.add(getReply(replyId).setSone(sone).setPost(getPost(postId)).setTime(replyTime).setText(replyText));
 675                 }
 676
 677                 /* load post likes. */
 678                 Set<String> likedPostIds = new HashSet<String>();
 679                 while (true) {
 680                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
 681                         if (likedPostId == null) {
 682                                 break;
 683                         }
 684                         likedPostIds.add(likedPostId);
 685                 }
 686
 687                 /* load reply likes. */
 688                 Set<String> likedReplyIds = new HashSet<String>();
 689                 while (true) {
 690                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
 691                         if (likedReplyId == null) {
 692                                 break;
 693                         }
 694                         likedReplyIds.add(likedReplyId);
 695                 }
 696
 697                 /* load friends. */
 698                 Set<Sone> friends = new HashSet<Sone>();
 699                 while (true) {
 700                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
 701                         if (friendId == null) {
 702                                 break;
 703                         }
 704                         Boolean friendLocal = configuration.getBooleanValue(sonePrefix + "/Friends/" + friends.size() + "/Local").getValue(null);
 705                         if (friendLocal == null) {
 706                                 logger.log(Level.WARNING, "Invalid friend found, aborting load!");
 707                                 return;
 708                         }
 709                         friends.add(friendLocal ? getLocalSone(friendId) : getRemoteSone(friendId));
 710                 }
 711
 712                 /* if we’re still here, Sone was loaded successfully. */
 713                 synchronized (sone) {
 714                         sone.setTime(soneTime);
 715                         sone.setProfile(profile);
 716                         sone.setPosts(posts);
 717                         sone.setReplies(replies);
 718                         sone.setLikePostIds(likedPostIds);
 719                         sone.setLikeReplyIds(likedReplyIds);
 720                         sone.setFriends(friends);
 721                         sone.setModificationCounter(soneModificationCounter);
 722                 }
 723         }
 724
 725         /**
 726          * Saves the given Sone. This will persist all local settings for the given
 727          * Sone, such as the friends list and similar, private options.
 728          *
 729          * @param sone
 730          *            The Sone to save
 731          */
 732         public void saveSone(Sone sone) {
 733                 if (!isLocalSone(sone)) {
 734                         logger.log(Level.FINE, "Tried to save non-local Sone: %s", sone);
 735                         return;
 736                 }
 737                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
 738                         logger.log(Level.WARNING, "Local Sone without OwnIdentity found, refusing to save: %s", sone);
 739                         return;
 740                 }
 741
 742                 logger.log(Level.INFO, "Saving Sone: %s", sone);
 743                 identityManager.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
 744                 try {
 745                         /* save Sone into configuration. */
 746                         String sonePrefix = "Sone/" + sone.getId();
 747                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
 748                         configuration.getLongValue(sonePrefix + "/ModificationCounter").setValue(sone.getModificationCounter());
 749
 750                         /* save profile. */
 751                         Profile profile = sone.getProfile();
 752                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
 753                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
 754                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
 755                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
 756                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
 757                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
 758
 759                         /* save posts. */
 760                         int postCounter = 0;
 761                         for (Post post : sone.getPosts()) {
 762                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
 763                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
 764                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
 765                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
 766                         }
 767                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
 768
 769                         /* save replies. */
 770                         int replyCounter = 0;
 771                         for (Reply reply : sone.getReplies()) {
 772                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
 773                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
 774                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPost().getId());
 775                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
 776                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
 777                         }
 778                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
 779
 780                         /* save post likes. */
 781                         int postLikeCounter = 0;
 782                         for (String postId : sone.getLikedPostIds()) {
 783                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
 784                         }
 785                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
 786
 787                         /* save reply likes. */
 788                         int replyLikeCounter = 0;
 789                         for (String replyId : sone.getLikedReplyIds()) {
 790                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
 791                         }
 792                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
 793
 794                         /* save friends. */
 795                         int friendCounter = 0;
 796                         for (Sone friend : sone.getFriends()) {
 797                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(friend.getId());
 798                                 configuration.getBooleanValue(sonePrefix + "/Friends/" + friendCounter++ + "/Local").setValue(friend.getInsertUri() != null);
 799                         }
 800                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
 801
 802                         logger.log(Level.INFO, "Sone %s saved.", sone);
 803                 } catch (ConfigurationException ce1) {
 804                         logger.log(Level.WARNING, "Could not save Sone: " + sone, ce1);
 805                 }
 806         }
 807
 808         /**
 809          * Creates a new post.
 810          *
 811          * @param sone
 812          *            The Sone that creates the post
 813          * @param text
 814          *            The text of the post
 815          */
 816         public void createPost(Sone sone, String text) {
 817                 createPost(sone, System.currentTimeMillis(), text);
 818         }
 819
 820         /**
 821          * Creates a new post.
 822          *
 823          * @param sone
 824          *            The Sone that creates the post
 825          * @param time
 826          *            The time of the post
 827          * @param text
 828          *            The text of the post
 829          */
 830         public void createPost(Sone sone, long time, String text) {
 831                 if (!isLocalSone(sone)) {
 832                         logger.log(Level.FINE, "Tried to create post for non-local Sone: %s", sone);
 833                         return;
 834                 }
 835                 Post post = new Post(sone, time, text);
 836                 synchronized (posts) {
 837                         posts.put(post.getId(), post);
 838                 }
 839                 sone.addPost(post);
 840                 saveSone(sone);
 841         }
 842
 843         /**
 844          * Deletes the given post.
 845          *
 846          * @param post
 847          *            The post to delete
 848          */
 849         public void deletePost(Post post) {
 850                 if (!isLocalSone(post.getSone())) {
 851                         logger.log(Level.WARNING, "Tried to delete post of non-local Sone: %s", post.getSone());
 852                         return;
 853                 }
 854                 post.getSone().removePost(post);
 855                 synchronized (posts) {
 856                         posts.remove(post.getId());
 857                 }
 858                 saveSone(post.getSone());
 859         }
 860
 861         /**
 862          * Creates a new reply.
 863          *
 864          * @param sone
 865          *            The Sone that creates the reply
 866          * @param post
 867          *            The post that this reply refers to
 868          * @param text
 869          *            The text of the reply
 870          */
 871         public void createReply(Sone sone, Post post, String text) {
 872                 createReply(sone, post, System.currentTimeMillis(), text);
 873         }
 874
 875         /**
 876          * Creates a new reply.
 877          *
 878          * @param sone
 879          *            The Sone that creates the reply
 880          * @param post
 881          *            The post that this reply refers to
 882          * @param time
 883          *            The time of the reply
 884          * @param text
 885          *            The text of the reply
 886          */
 887         public void createReply(Sone sone, Post post, long time, String text) {
 888                 if (!isLocalSone(sone)) {
 889                         logger.log(Level.FINE, "Tried to create reply for non-local Sone: %s", sone);
 890                         return;
 891                 }
 892                 Reply reply = new Reply(sone, post, System.currentTimeMillis(), text);
 893                 synchronized (replies) {
 894                         replies.put(reply.getId(), reply);
 895                 }
 896                 sone.addReply(reply);
 897                 saveSone(sone);
 898         }
 899
 900         /**
 901          * Deletes the given reply.
 902          *
 903          * @param reply
 904          *            The reply to delete
 905          */
 906         public void deleteReply(Reply reply) {
 907                 Sone sone = reply.getSone();
 908                 if (!isLocalSone(sone)) {
 909                         logger.log(Level.FINE, "Tried to delete non-local reply: %s", reply);
 910                         return;
 911                 }
 912                 synchronized (replies) {
 913                         replies.remove(reply.getId());
 914                 }
 915                 sone.removeReply(reply);
 916                 saveSone(sone);
 917         }
 918
 919         /**
 920          * Starts the core.
 921          */
 922         public void start() {
 923                 loadConfiguration();
 924         }
 925
 926         /**
 927          * Stops the core.
 928          */
 929         public void stop() {
 930                 synchronized (localSones) {
 931                         for (SoneInserter soneInserter : soneInserters.values()) {
 932                                 soneInserter.stop();
 933                         }
 934                 }
 935                 saveConfiguration();
 936         }
 937
 938         //
 939         // PRIVATE METHODS
 940         //
 941
 942         /**
 943          * Loads the configuration.
 944          */
 945         @SuppressWarnings("unchecked")
 946         private void loadConfiguration() {
 947                 /* create options. */
 948                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new OptionWatcher<Integer>() {
 949
 950                         @Override
 951                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
 952                                 SoneInserter.setInsertionDelay(newValue);
 953                         }
 954
 955                 }));
 956                 options.addBooleanOption("ClearOnNextRestart", new DefaultOption<Boolean>(false));
 957                 options.addBooleanOption("ReallyClearOnNextRestart", new DefaultOption<Boolean>(false));
 958
 959                 /* read options from configuration. */
 960                 options.getBooleanOption("ClearOnNextRestart").set(configuration.getBooleanValue("Option/ClearOnNextRestart").getValue(null));
 961                 options.getBooleanOption("ReallyClearOnNextRestart").set(configuration.getBooleanValue("Option/ReallyClearOnNextRestart").getValue(null));
 962                 boolean clearConfiguration = options.getBooleanOption("ClearOnNextRestart").get() && options.getBooleanOption("ReallyClearOnNextRestart").get();
 963                 options.getBooleanOption("ClearOnNextRestart").set(null);
 964                 options.getBooleanOption("ReallyClearOnNextRestart").set(null);
 965                 if (clearConfiguration) {
 966                         /* stop loading the configuration. */
 967                         return;
 968                 }
 969
 970                 options.getIntegerOption("InsertionDelay").set(configuration.getIntValue("Option/InsertionDelay").getValue(null));
 971
 972         }
 973
 974         /**
 975          * Saves the current options.
 976          */
 977         private void saveConfiguration() {
 978                 /* store the options first. */
 979                 try {
 980                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
 981                         configuration.getBooleanValue("Option/ClearOnNextRestart").setValue(options.getBooleanOption("ClearOnNextRestart").getReal());
 982                         configuration.getBooleanValue("Option/ReallyClearOnNextRestart").setValue(options.getBooleanOption("ReallyClearOnNextRestart").getReal());
 983                 } catch (ConfigurationException ce1) {
 984                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
 985                 }
 986         }
 987
 988         /**
 989          * Generate a Sone URI from the given URI and latest edition.
 990          *
 991          * @param uriString
 992          *            The URI to derive the Sone URI from
 993          * @return The derived URI
 994          */
 995         private FreenetURI getSoneUri(String uriString) {
 996                 try {
 997                         FreenetURI uri = new FreenetURI(uriString).setDocName("Sone").setMetaString(new String[0]);
 998                         return uri;
 999                 } catch (MalformedURLException mue1) {
1000                         logger.log(Level.WARNING, "Could not create Sone URI from URI: " + uriString, mue1);
1001                         return null;
1002                 }
1003         }
1004
1005         //
1006         // INTERFACE IdentityListener
1007         //
1008
1009         /**
1010          * {@inheritDoc}
1011          */
1012         @Override
1013         public void ownIdentityAdded(OwnIdentity ownIdentity) {
1014                 logger.log(Level.FINEST, "Adding OwnIdentity: " + ownIdentity);
1015                 if (ownIdentity.hasContext("Sone")) {
1016                         addLocalSone(ownIdentity);
1017                 }
1018         }
1019
1020         /**
1021          * {@inheritDoc}
1022          */
1023         @Override
1024         public void ownIdentityRemoved(OwnIdentity ownIdentity) {
1025                 logger.log(Level.FINEST, "Removing OwnIdentity: " + ownIdentity);
1026         }
1027
1028         /**
1029          * {@inheritDoc}
1030          */
1031         @Override
1032         public void identityAdded(Identity identity) {
1033                 logger.log(Level.FINEST, "Adding Identity: " + identity);
1034                 addRemoteSone(identity);
1035         }
1036
1037         /**
1038          * {@inheritDoc}
1039          */
1040         @Override
1041         public void identityUpdated(final Identity identity) {
1042                 new Thread(new Runnable() {
1043
1044                         @Override
1045                         @SuppressWarnings("synthetic-access")
1046                         public void run() {
1047                                 Sone sone = getRemoteSone(identity.getId());
1048                                 soneDownloader.fetchSone(sone);
1049                         }
1050                 }).start();
1051         }
1052
1053         /**
1054          * {@inheritDoc}
1055          */
1056         @Override
1057         public void identityRemoved(Identity identity) {
1058                 /* TODO */
1059         }
1060
1061 }