src/main/java/net/pterodactylus/sone/data/impl/DefaultSone.java

   1 /*
   2  * Sone - SoneImpl.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.data.impl;
  19
  20 import static com.google.common.base.Preconditions.checkNotNull;
  21
  22 import java.util.ArrayList;
  23 import java.util.Collection;
  24 import java.util.Collections;
  25 import java.util.List;
  26 import java.util.Set;
  27 import java.util.concurrent.CopyOnWriteArraySet;
  28 import java.util.logging.Level;
  29 import java.util.logging.Logger;
  30
  31 import net.pterodactylus.sone.core.Options;
  32 import net.pterodactylus.sone.data.Album;
  33 import net.pterodactylus.sone.data.Client;
  34 import net.pterodactylus.sone.data.Post;
  35 import net.pterodactylus.sone.data.PostReply;
  36 import net.pterodactylus.sone.data.Profile;
  37 import net.pterodactylus.sone.data.Reply;
  38 import net.pterodactylus.sone.data.Sone;
  39 import net.pterodactylus.sone.database.AlbumBuilder;
  40 import net.pterodactylus.sone.database.Database;
  41 import net.pterodactylus.sone.database.PostBuilder;
  42 import net.pterodactylus.sone.database.PostReplyBuilder;
  43 import net.pterodactylus.sone.freenet.wot.Identity;
  44 import net.pterodactylus.util.logging.Logging;
  45
  46 import freenet.keys.FreenetURI;
  47
  48 import com.google.common.base.Optional;
  49 import com.google.common.hash.Hasher;
  50 import com.google.common.hash.Hashing;
  51
  52 /**
  53  * Dumb, store-everything-in-memory {@link Sone} implementation.
  54  *
  55  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  56  */
  57 public class DefaultSone implements Sone {
  58
  59         /** The logger. */
  60         private static final Logger logger = Logging.getLogger(DefaultSone.class);
  61
  62         /** The database. */
  63         private final Database database;
  64
  65         /** The ID of this Sone. */
  66         private final String id;
  67
  68         /** Whether the Sone is local. */
  69         private final boolean local;
  70
  71         /** The URI under which the Sone is stored in Freenet. */
  72         private volatile FreenetURI requestUri;
  73
  74         /** The URI used to insert a new version of this Sone. */
  75         /* This will be null for remote Sones! */
  76         private volatile FreenetURI insertUri;
  77
  78         /** The latest edition of the Sone. */
  79         private volatile long latestEdition;
  80
  81         /** The time of the last inserted update. */
  82         private volatile long time;
  83
  84         /** The status of this Sone. */
  85         private volatile SoneStatus status = SoneStatus.unknown;
  86
  87         /** The profile of this Sone. */
  88         private volatile Profile profile = new Profile(this);
  89
  90         /** The client used by the Sone. */
  91         private final Client client;
  92
  93         /** Whether this Sone is known. */
  94         private volatile boolean known;
  95
  96         /** All friend Sones. */
  97         private final Set<String> friendSones = new CopyOnWriteArraySet<String>();
  98
  99         /** All posts. */
 100         private final Set<Post> posts = new CopyOnWriteArraySet<Post>();
 101
 102         /** All replies. */
 103         private final Set<PostReply> replies = new CopyOnWriteArraySet<PostReply>();
 104
 105         /** The IDs of all liked posts. */
 106         private final Set<String> likedPostIds = new CopyOnWriteArraySet<String>();
 107
 108         /** The IDs of all liked replies. */
 109         private final Set<String> likedReplyIds = new CopyOnWriteArraySet<String>();
 110
 111         /** The root album containing all albums. */
 112         private final Album rootAlbum;
 113
 114         /** Sone-specific options. */
 115         private Options options = new Options();
 116
 117         /**
 118          * Creates a new Sone.
 119          *
 120          * @param id
 121          *              The ID of the Sone
 122          * @param local
 123          *              {@code true} if the Sone is a local Sone, {@code false} otherwise
 124          */
 125         public DefaultSone(Database database, String id, boolean local, Client client) {
 126                 this.database = database;
 127                 this.id = id;
 128                 this.local = local;
 129                 this.client = client;
 130                 rootAlbum = new DefaultAlbumBuilder(database, this, null).build();
 131         }
 132
 133         //
 134         // ACCESSORS
 135         //
 136
 137         public String getId() {
 138                 return id;
 139         }
 140
 141         public Identity getIdentity() {
 142                 return database.getIdentity(id).get();
 143         }
 144
 145         public String getName() {
 146                 return getIdentity().getNickname();
 147         }
 148
 149         public boolean isLocal() {
 150                 return local;
 151         }
 152
 153         public FreenetURI getRequestUri() {
 154                 return (requestUri != null) ? requestUri.setSuggestedEdition(latestEdition) : null;
 155         }
 156
 157         public Sone setRequestUri(FreenetURI requestUri) {
 158                 if (this.requestUri == null) {
 159                         this.requestUri = requestUri.setKeyType("USK").setDocName("Sone").setMetaString(new String[0]);
 160                         return this;
 161                 }
 162                 if (!this.requestUri.equalsKeypair(requestUri)) {
 163                         logger.log(Level.WARNING, String.format("Request URI %s tried to overwrite %s!", requestUri, this.requestUri));
 164                         return this;
 165                 }
 166                 return this;
 167         }
 168
 169         public FreenetURI getInsertUri() {
 170                 return (insertUri != null) ? insertUri.setSuggestedEdition(latestEdition) : null;
 171         }
 172
 173         public Sone setInsertUri(FreenetURI insertUri) {
 174                 if (this.insertUri == null) {
 175                         this.insertUri = insertUri.setKeyType("USK").setDocName("Sone").setMetaString(new String[0]);
 176                         return this;
 177                 }
 178                 if (!this.insertUri.equalsKeypair(insertUri)) {
 179                         logger.log(Level.WARNING, String.format("Request URI %s tried to overwrite %s!", insertUri, this.insertUri));
 180                         return this;
 181                 }
 182                 return this;
 183         }
 184
 185         public long getLatestEdition() {
 186                 return latestEdition;
 187         }
 188
 189         public void setLatestEdition(long latestEdition) {
 190                 if (!(latestEdition > this.latestEdition)) {
 191                         logger.log(Level.FINE, String.format("New latest edition %d is not greater than current latest edition %d!", latestEdition, this.latestEdition));
 192                         return;
 193                 }
 194                 this.latestEdition = latestEdition;
 195         }
 196
 197         public long getTime() {
 198                 return time;
 199         }
 200
 201         public Sone setTime(long time) {
 202                 this.time = time;
 203                 return this;
 204         }
 205
 206         public SoneStatus getStatus() {
 207                 return status;
 208         }
 209
 210         public Sone setStatus(SoneStatus status) {
 211                 this.status = checkNotNull(status, "status must not be null");
 212                 return this;
 213         }
 214
 215         public Profile getProfile() {
 216                 return new Profile(profile);
 217         }
 218
 219         public void setProfile(Profile profile) {
 220                 this.profile = new Profile(profile);
 221         }
 222
 223         public Client getClient() {
 224                 return client;
 225         }
 226
 227         public boolean isKnown() {
 228                 return known;
 229         }
 230
 231         public Sone setKnown(boolean known) {
 232                 this.known = known;
 233                 return this;
 234         }
 235
 236         public List<String> getFriends() {
 237                 List<String> friends = new ArrayList<String>(friendSones);
 238                 return friends;
 239         }
 240
 241         public boolean hasFriend(String friendSoneId) {
 242                 return friendSones.contains(friendSoneId);
 243         }
 244
 245         public Sone addFriend(String friendSone) {
 246                 if (!friendSone.equals(id)) {
 247                         friendSones.add(friendSone);
 248                 }
 249                 return this;
 250         }
 251
 252         public Sone removeFriend(String friendSoneId) {
 253                 friendSones.remove(friendSoneId);
 254                 return this;
 255         }
 256
 257         public List<Post> getPosts() {
 258                 List<Post> sortedPosts;
 259                 synchronized (this) {
 260                         sortedPosts = new ArrayList<Post>(posts);
 261                 }
 262                 Collections.sort(sortedPosts, Post.TIME_COMPARATOR);
 263                 return sortedPosts;
 264         }
 265
 266         public Sone setPosts(Collection<Post> posts) {
 267                 synchronized (this) {
 268                         this.posts.clear();
 269                         this.posts.addAll(posts);
 270                 }
 271                 return this;
 272         }
 273
 274         public void addPost(Post post) {
 275                 if (post.getSone().equals(this) && posts.add(post)) {
 276                         logger.log(Level.FINEST, String.format("Adding %s to “%s”.", post, getName()));
 277                 }
 278         }
 279
 280         public void removePost(Post post) {
 281                 if (post.getSone().equals(this)) {
 282                         posts.remove(post);
 283                 }
 284         }
 285
 286         public Set<PostReply> getReplies() {
 287                 return Collections.unmodifiableSet(replies);
 288         }
 289
 290         public Sone setReplies(Collection<PostReply> replies) {
 291                 this.replies.clear();
 292                 this.replies.addAll(replies);
 293                 return this;
 294         }
 295
 296         public void addReply(PostReply reply) {
 297                 if (reply.getSone().equals(this)) {
 298                         replies.add(reply);
 299                 }
 300         }
 301
 302         public void removeReply(PostReply reply) {
 303                 if (reply.getSone().equals(this)) {
 304                         replies.remove(reply);
 305                 }
 306         }
 307
 308         public Set<String> getLikedPostIds() {
 309                 return Collections.unmodifiableSet(likedPostIds);
 310         }
 311
 312         public Sone setLikePostIds(Set<String> likedPostIds) {
 313                 this.likedPostIds.clear();
 314                 this.likedPostIds.addAll(likedPostIds);
 315                 return this;
 316         }
 317
 318         public boolean isLikedPostId(String postId) {
 319                 return likedPostIds.contains(postId);
 320         }
 321
 322         public Sone removeLikedPostId(String postId) {
 323                 likedPostIds.remove(postId);
 324                 return this;
 325         }
 326
 327         public Set<String> getLikedReplyIds() {
 328                 return Collections.unmodifiableSet(likedReplyIds);
 329         }
 330
 331         public Sone setLikeReplyIds(Set<String> likedReplyIds) {
 332                 this.likedReplyIds.clear();
 333                 this.likedReplyIds.addAll(likedReplyIds);
 334                 return this;
 335         }
 336
 337         public boolean isLikedReplyId(String replyId) {
 338                 return likedReplyIds.contains(replyId);
 339         }
 340
 341         public Sone addLikedReplyId(String replyId) {
 342                 likedReplyIds.add(replyId);
 343                 return this;
 344         }
 345
 346         public Sone removeLikedReplyId(String replyId) {
 347                 likedReplyIds.remove(replyId);
 348                 return this;
 349         }
 350
 351         public Album getRootAlbum() {
 352                 return rootAlbum;
 353         }
 354
 355         public Options getOptions() {
 356                 return options;
 357         }
 358
 359         /* TODO - remove this method again, maybe add an option provider */
 360         public void setOptions(Options options) {
 361                 this.options = options;
 362         }
 363
 364         @Override
 365         public AlbumBuilder newAlbumBuilder() {
 366                 return new DefaultAlbumBuilder(database, this, rootAlbum.getId());
 367         }
 368
 369         public PostBuilder newPostBuilder() {
 370                 return new DefaultPostBuilder(database, getId()) {
 371                         @Override
 372                         public Post build(Optional<PostCreated> postCreated) {
 373                                 Post post = super.build(postCreated);
 374                                 database.storePost(post);
 375                                 return post;
 376                         }
 377                 };
 378         }
 379
 380         @Override
 381         public PostReplyBuilder newPostReplyBuilder(String postId) throws IllegalStateException {
 382                 return new DefaultPostReplyBuilder(database, getId(), postId) {
 383                         @Override
 384                         public PostReply build(Optional<PostReplyCreated> postReplyCreated) {
 385                                 PostReply postReply = super.build(postReplyCreated);
 386                                 database.storePostReply(postReply);
 387                                 return postReply;
 388                         }
 389                 };
 390         }
 391
 392         public Modifier modify() {
 393                 return new Modifier() {
 394                         private long latestEdition = DefaultSone.this.latestEdition;
 395                         @Override
 396                         public Modifier setLatestEdition(long latestEdition) {
 397                                 this.latestEdition = latestEdition;
 398                                 return this;
 399                         }
 400
 401                         @Override
 402                         public Sone update() {
 403                                 DefaultSone.this.latestEdition = latestEdition;
 404                                 return DefaultSone.this;
 405                         }
 406                 };
 407         }
 408
 409         //
 410         // FINGERPRINTABLE METHODS
 411         //
 412
 413         @Override
 414         public synchronized String getFingerprint() {
 415                 Hasher hash = Hashing.sha256().newHasher();
 416                 hash.putString(profile.getFingerprint());
 417
 418                 hash.putString("Posts(");
 419                 for (Post post : getPosts()) {
 420                         hash.putString("Post(").putString(post.getId()).putString(")");
 421                 }
 422                 hash.putString(")");
 423
 424                 List<PostReply> replies = new ArrayList<PostReply>(getReplies());
 425                 Collections.sort(replies, Reply.TIME_COMPARATOR);
 426                 hash.putString("Replies(");
 427                 for (PostReply reply : replies) {
 428                         hash.putString("Reply(").putString(reply.getId()).putString(")");
 429                 }
 430                 hash.putString(")");
 431
 432                 List<String> likedPostIds = new ArrayList<String>(getLikedPostIds());
 433                 Collections.sort(likedPostIds);
 434                 hash.putString("LikedPosts(");
 435                 for (String likedPostId : likedPostIds) {
 436                         hash.putString("Post(").putString(likedPostId).putString(")");
 437                 }
 438                 hash.putString(")");
 439
 440                 List<String> likedReplyIds = new ArrayList<String>(getLikedReplyIds());
 441                 Collections.sort(likedReplyIds);
 442                 hash.putString("LikedReplies(");
 443                 for (String likedReplyId : likedReplyIds) {
 444                         hash.putString("Reply(").putString(likedReplyId).putString(")");
 445                 }
 446                 hash.putString(")");
 447
 448                 hash.putString("Albums(");
 449                 for (Album album : rootAlbum.getAlbums()) {
 450                         if (!Album.NOT_EMPTY.apply(album)) {
 451                                 continue;
 452                         }
 453                         hash.putString(album.getFingerprint());
 454                 }
 455                 hash.putString(")");
 456
 457                 return hash.hash().toString();
 458         }
 459
 460         //
 461         // INTERFACE Comparable<Sone>
 462         //
 463
 464         @Override
 465         public int compareTo(Sone sone) {
 466                 return NICE_NAME_COMPARATOR.compare(this, sone);
 467         }
 468
 469         //
 470         // OBJECT METHODS
 471         //
 472
 473         @Override
 474         public int hashCode() {
 475                 return id.hashCode();
 476         }
 477
 478         @Override
 479         public boolean equals(Object object) {
 480                 if (!(object instanceof Sone)) {
 481                         return false;
 482                 }
 483                 return ((Sone) object).getId().equals(id);
 484         }
 485
 486         @Override
 487         public String toString() {
 488                 return getClass().getName() + "[id=" + id + ",requestUri=" + requestUri + ",insertUri(" + String.valueOf(insertUri).length() + "),friends(" + friendSones.size() + "),posts(" + posts.size() + "),replies(" + replies.size() + "),albums(" + getRootAlbum().getAlbums().size() + ")]";
 489         }
 490
 491 }