Convert MemoryDatabase to Kotlin
authorDavid ‘Bombe’ Roden <bombe@pterodactylus.net>
Fri, 2 Mar 2018 20:47:33 +0000 (21:47 +0100)
committerDavid ‘Bombe’ Roden <bombe@pterodactylus.net>
Fri, 2 Mar 2018 20:59:53 +0000 (21:59 +0100)
src/main/java/net/pterodactylus/sone/database/memory/MemoryDatabase.java [deleted file]
src/main/java/net/pterodactylus/sone/database/memory/MemoryDatabase.kt [new file with mode: 0644]
src/main/kotlin/net/pterodactylus/sone/utils/Objects.kt
src/test/java/net/pterodactylus/sone/database/memory/MemoryDatabaseTest.java

diff --git a/src/main/java/net/pterodactylus/sone/database/memory/MemoryDatabase.java b/src/main/java/net/pterodactylus/sone/database/memory/MemoryDatabase.java
deleted file mode 100644 (file)
index 4a8b6f0..0000000
+++ /dev/null
@@ -1,760 +0,0 @@
-/*
- * Sone - MemoryDatabase.java - Copyright © 2013–2016 David Roden
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-package net.pterodactylus.sone.database.memory;
-
-import static com.google.common.base.Preconditions.checkNotNull;
-import static com.google.common.base.Predicates.not;
-import static com.google.common.collect.FluentIterable.from;
-import static net.pterodactylus.sone.data.Reply.TIME_COMPARATOR;
-import static net.pterodactylus.sone.data.Sone.LOCAL_SONE_FILTER;
-import static net.pterodactylus.sone.data.Sone.toAllAlbums;
-import static net.pterodactylus.sone.data.Sone.toAllImages;
-
-import java.util.Collection;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-import java.util.concurrent.locks.ReadWriteLock;
-import java.util.concurrent.locks.ReentrantReadWriteLock;
-
-import javax.annotation.Nonnull;
-import javax.annotation.Nullable;
-
-import net.pterodactylus.sone.data.Album;
-import net.pterodactylus.sone.data.Image;
-import net.pterodactylus.sone.data.Post;
-import net.pterodactylus.sone.data.PostReply;
-import net.pterodactylus.sone.data.Sone;
-import net.pterodactylus.sone.data.impl.AlbumBuilderImpl;
-import net.pterodactylus.sone.data.impl.ImageBuilderImpl;
-import net.pterodactylus.sone.database.AlbumBuilder;
-import net.pterodactylus.sone.database.Database;
-import net.pterodactylus.sone.database.DatabaseException;
-import net.pterodactylus.sone.database.ImageBuilder;
-import net.pterodactylus.sone.database.PostBuilder;
-import net.pterodactylus.sone.database.PostDatabase;
-import net.pterodactylus.sone.database.PostReplyBuilder;
-import net.pterodactylus.sone.database.SoneBuilder;
-import net.pterodactylus.util.config.Configuration;
-import net.pterodactylus.util.config.ConfigurationException;
-
-import com.google.common.base.Predicate;
-import com.google.common.collect.HashMultimap;
-import com.google.common.collect.Multimap;
-import com.google.common.collect.SortedSetMultimap;
-import com.google.common.collect.TreeMultimap;
-import com.google.common.util.concurrent.AbstractService;
-import com.google.inject.Inject;
-import com.google.inject.Singleton;
-import kotlin.jvm.functions.Function1;
-
-/**
- * Memory-based {@link PostDatabase} implementation.
- *
- * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
- */
-@Singleton
-public class MemoryDatabase extends AbstractService implements Database {
-
-       /** The lock. */
-       private final ReadWriteLock lock = new ReentrantReadWriteLock();
-
-       /** The configuration. */
-       private final Configuration configuration;
-       private final ConfigurationLoader configurationLoader;
-
-       private final Map<String, Sone> allSones = new HashMap<String, Sone>();
-
-       /** All posts by their ID. */
-       private final Map<String, Post> allPosts = new HashMap<String, Post>();
-
-       /** All posts by their Sones. */
-       private final Multimap<String, Post> sonePosts = HashMultimap.create();
-
-       /** Whether posts are known. */
-       private final Set<String> knownPosts = new HashSet<String>();
-
-       /** All post replies by their ID. */
-       private final Map<String, PostReply> allPostReplies = new HashMap<String, PostReply>();
-
-       /** Replies sorted by Sone. */
-       private final SortedSetMultimap<String, PostReply> sonePostReplies = TreeMultimap.create(new Comparator<String>() {
-
-               @Override
-               public int compare(String leftString, String rightString) {
-                       return leftString.compareTo(rightString);
-               }
-       }, TIME_COMPARATOR);
-
-       /** Whether post replies are known. */
-       private final Set<String> knownPostReplies = new HashSet<String>();
-
-       private final Map<String, Album> allAlbums = new HashMap<String, Album>();
-       private final Multimap<String, Album> soneAlbums = HashMultimap.create();
-
-       private final Map<String, Image> allImages = new HashMap<String, Image>();
-       private final Multimap<String, Image> soneImages = HashMultimap.create();
-
-       private final MemoryBookmarkDatabase memoryBookmarkDatabase;
-       private final MemoryFriendDatabase memoryFriendDatabase;
-
-       /**
-        * Creates a new memory database.
-        *
-        * @param configuration
-        *              The configuration for loading and saving elements
-        */
-       @Inject
-       public MemoryDatabase(Configuration configuration) {
-               this.configuration = configuration;
-               this.configurationLoader = new ConfigurationLoader(configuration);
-               memoryBookmarkDatabase =
-                               new MemoryBookmarkDatabase(this, configurationLoader);
-               memoryFriendDatabase = new MemoryFriendDatabase(configurationLoader);
-       }
-
-       //
-       // DATABASE METHODS
-       //
-
-       /**
-        * Saves the database.
-        *
-        * @throws DatabaseException
-        *              if an error occurs while saving
-        */
-       @Override
-       public void save() throws DatabaseException {
-               saveKnownPosts();
-               saveKnownPostReplies();
-       }
-
-       //
-       // SERVICE METHODS
-       //
-
-       /** {@inheritDocs} */
-       @Override
-       protected void doStart() {
-               memoryBookmarkDatabase.start();
-               loadKnownPosts();
-               loadKnownPostReplies();
-               notifyStarted();
-       }
-
-       /** {@inheritDocs} */
-       @Override
-       protected void doStop() {
-               try {
-                       memoryBookmarkDatabase.stop();
-                       save();
-                       notifyStopped();
-               } catch (DatabaseException de1) {
-                       notifyFailed(de1);
-               }
-       }
-
-       @Override
-       public SoneBuilder newSoneBuilder() {
-               return new MemorySoneBuilder(this);
-       }
-
-       @Override
-       public void storeSone(Sone sone) {
-               lock.writeLock().lock();
-               try {
-                       removeSone(sone);
-
-                       allSones.put(sone.getId(), sone);
-                       sonePosts.putAll(sone.getId(), sone.getPosts());
-                       for (Post post : sone.getPosts()) {
-                               allPosts.put(post.getId(), post);
-                       }
-                       sonePostReplies.putAll(sone.getId(), sone.getReplies());
-                       for (PostReply postReply : sone.getReplies()) {
-                               allPostReplies.put(postReply.getId(), postReply);
-                       }
-                       soneAlbums.putAll(sone.getId(), toAllAlbums.apply(sone));
-                       for (Album album : toAllAlbums.apply(sone)) {
-                               allAlbums.put(album.getId(), album);
-                       }
-                       soneImages.putAll(sone.getId(), toAllImages.apply(sone));
-                       for (Image image : toAllImages.apply(sone)) {
-                               allImages.put(image.getId(), image);
-                       }
-               } finally {
-                       lock.writeLock().unlock();
-               }
-       }
-
-       @Override
-       public void removeSone(Sone sone) {
-               lock.writeLock().lock();
-               try {
-                       allSones.remove(sone.getId());
-                       Collection<Post> removedPosts = sonePosts.removeAll(sone.getId());
-                       for (Post removedPost : removedPosts) {
-                               allPosts.remove(removedPost.getId());
-                       }
-                       Collection<PostReply> removedPostReplies =
-                                       sonePostReplies.removeAll(sone.getId());
-                       for (PostReply removedPostReply : removedPostReplies) {
-                               allPostReplies.remove(removedPostReply.getId());
-                       }
-                       Collection<Album> removedAlbums =
-                                       soneAlbums.removeAll(sone.getId());
-                       for (Album removedAlbum : removedAlbums) {
-                               allAlbums.remove(removedAlbum.getId());
-                       }
-                       Collection<Image> removedImages =
-                                       soneImages.removeAll(sone.getId());
-                       for (Image removedImage : removedImages) {
-                               allImages.remove(removedImage.getId());
-                       }
-               } finally {
-                       lock.writeLock().unlock();
-               }
-       }
-
-       @Nonnull
-       @Override
-       public Function1<String, Sone> getSoneLoader() {
-               return new Function1<String, Sone>() {
-                       @Override
-                       public Sone invoke(String soneId) {
-                               return getSone(soneId);
-                       }
-               };
-       }
-
-       @Override
-       public Sone getSone(String soneId) {
-               lock.readLock().lock();
-               try {
-                       return allSones.get(soneId);
-               } finally {
-                       lock.readLock().unlock();
-               }
-       }
-
-       @Override
-       public Collection<Sone> getSones() {
-               lock.readLock().lock();
-               try {
-                       return new HashSet<Sone>(allSones.values());
-               } finally {
-                       lock.readLock().unlock();
-               }
-       }
-
-       @Override
-       public Collection<Sone> getLocalSones() {
-               lock.readLock().lock();
-               try {
-                       return from(allSones.values()).filter(LOCAL_SONE_FILTER).toSet();
-               } finally {
-                       lock.readLock().unlock();
-               }
-       }
-
-       @Override
-       public Collection<Sone> getRemoteSones() {
-               lock.readLock().lock();
-               try {
-                       return from(allSones.values())
-                                       .filter(not(LOCAL_SONE_FILTER)) .toSet();
-               } finally {
-                       lock.readLock().unlock();
-               }
-       }
-
-       @Override
-       public Collection<String> getFriends(Sone localSone) {
-               if (!localSone.isLocal()) {
-                       return Collections.emptySet();
-               }
-               return memoryFriendDatabase.getFriends(localSone.getId());
-       }
-
-       @Override
-       public boolean isFriend(Sone localSone, String friendSoneId) {
-               if (!localSone.isLocal()) {
-                       return false;
-               }
-               return memoryFriendDatabase.isFriend(localSone.getId(), friendSoneId);
-       }
-
-       @Override
-       public void addFriend(Sone localSone, String friendSoneId) {
-               if (!localSone.isLocal()) {
-                       return;
-               }
-               memoryFriendDatabase.addFriend(localSone.getId(), friendSoneId);
-       }
-
-       @Override
-       public void removeFriend(Sone localSone, String friendSoneId) {
-               if (!localSone.isLocal()) {
-                       return;
-               }
-               memoryFriendDatabase.removeFriend(localSone.getId(), friendSoneId);
-       }
-
-       @Nullable
-       @Override
-       public Long getFollowingTime(@Nonnull String friendSoneId) {
-               return memoryFriendDatabase.getFollowingTime(friendSoneId);
-       }
-
-       //
-       // POSTPROVIDER METHODS
-       //
-
-       @Nullable
-       @Override
-       public Post getPost(@Nonnull String postId) {
-               lock.readLock().lock();
-               try {
-                       return allPosts.get(postId);
-               } finally {
-                       lock.readLock().unlock();
-               }
-       }
-
-       /** {@inheritDocs} */
-       @Override
-       public Collection<Post> getPosts(String soneId) {
-               return new HashSet<Post>(getPostsFrom(soneId));
-       }
-
-       /** {@inheritDocs} */
-       @Override
-       public Collection<Post> getDirectedPosts(final String recipientId) {
-               lock.readLock().lock();
-               try {
-                       return from(sonePosts.values()).filter(new Predicate<Post>() {
-                               @Override
-                               public boolean apply(Post post) {
-                                       return post.getRecipientId().asSet().contains(recipientId);
-                               }
-                       }).toSet();
-               } finally {
-                       lock.readLock().unlock();
-               }
-       }
-
-       //
-       // POSTBUILDERFACTORY METHODS
-       //
-
-       /** {@inheritDocs} */
-       @Override
-       public PostBuilder newPostBuilder() {
-               return new MemoryPostBuilder(this, this);
-       }
-
-       //
-       // POSTSTORE METHODS
-       //
-
-       /** {@inheritDocs} */
-       @Override
-       public void storePost(Post post) {
-               checkNotNull(post, "post must not be null");
-               lock.writeLock().lock();
-               try {
-                       allPosts.put(post.getId(), post);
-                       getPostsFrom(post.getSone().getId()).add(post);
-               } finally {
-                       lock.writeLock().unlock();
-               }
-       }
-
-       /** {@inheritDocs} */
-       @Override
-       public void removePost(Post post) {
-               checkNotNull(post, "post must not be null");
-               lock.writeLock().lock();
-               try {
-                       allPosts.remove(post.getId());
-                       getPostsFrom(post.getSone().getId()).remove(post);
-                       post.getSone().removePost(post);
-               } finally {
-                       lock.writeLock().unlock();
-               }
-       }
-
-       //
-       // POSTREPLYPROVIDER METHODS
-       //
-
-       @Nullable
-       @Override
-       public PostReply getPostReply(String id) {
-               lock.readLock().lock();
-               try {
-                       return allPostReplies.get(id);
-               } finally {
-                       lock.readLock().unlock();
-               }
-       }
-
-       /** {@inheritDocs} */
-       @Override
-       public List<PostReply> getReplies(final String postId) {
-               lock.readLock().lock();
-               try {
-                       return from(allPostReplies.values())
-                                       .filter(new Predicate<PostReply>() {
-                                               @Override
-                                               public boolean apply(PostReply postReply) {
-                                                       return postReply.getPostId().equals(postId);
-                                               }
-                                       }).toSortedList(TIME_COMPARATOR);
-               } finally {
-                       lock.readLock().unlock();
-               }
-       }
-
-       //
-       // POSTREPLYBUILDERFACTORY METHODS
-       //
-
-       /** {@inheritDocs} */
-       @Override
-       public PostReplyBuilder newPostReplyBuilder() {
-               return new MemoryPostReplyBuilder(this, this);
-       }
-
-       //
-       // POSTREPLYSTORE METHODS
-       //
-
-       /** {@inheritDocs} */
-       @Override
-       public void storePostReply(PostReply postReply) {
-               lock.writeLock().lock();
-               try {
-                       allPostReplies.put(postReply.getId(), postReply);
-               } finally {
-                       lock.writeLock().unlock();
-               }
-       }
-
-       /** {@inheritDocs} */
-       @Override
-       public void removePostReply(PostReply postReply) {
-               lock.writeLock().lock();
-               try {
-                       allPostReplies.remove(postReply.getId());
-               } finally {
-                       lock.writeLock().unlock();
-               }
-       }
-
-       //
-       // ALBUMPROVDER METHODS
-       //
-
-       @Nullable
-       @Override
-       public Album getAlbum(@Nonnull String albumId) {
-               lock.readLock().lock();
-               try {
-                       return allAlbums.get(albumId);
-               } finally {
-                       lock.readLock().unlock();
-               }
-       }
-
-       //
-       // ALBUMBUILDERFACTORY METHODS
-       //
-
-       @Override
-       public AlbumBuilder newAlbumBuilder() {
-               return new AlbumBuilderImpl();
-       }
-
-       //
-       // ALBUMSTORE METHODS
-       //
-
-       @Override
-       public void storeAlbum(Album album) {
-               lock.writeLock().lock();
-               try {
-                       allAlbums.put(album.getId(), album);
-                       soneAlbums.put(album.getSone().getId(), album);
-               } finally {
-                       lock.writeLock().unlock();
-               }
-       }
-
-       @Override
-       public void removeAlbum(Album album) {
-               lock.writeLock().lock();
-               try {
-                       allAlbums.remove(album.getId());
-                       soneAlbums.remove(album.getSone().getId(), album);
-               } finally {
-                       lock.writeLock().unlock();
-               }
-       }
-
-       //
-       // IMAGEPROVIDER METHODS
-       //
-
-       @Nullable
-       @Override
-       public Image getImage(@Nonnull String imageId) {
-               lock.readLock().lock();
-               try {
-                       return allImages.get(imageId);
-               } finally {
-                       lock.readLock().unlock();
-               }
-       }
-
-       //
-       // IMAGEBUILDERFACTORY METHODS
-       //
-
-       @Override
-       public ImageBuilder newImageBuilder() {
-               return new ImageBuilderImpl();
-       }
-
-       //
-       // IMAGESTORE METHODS
-       //
-
-       @Override
-       public void storeImage(Image image) {
-               lock.writeLock().lock();
-               try {
-                       allImages.put(image.getId(), image);
-                       soneImages.put(image.getSone().getId(), image);
-               } finally {
-                       lock.writeLock().unlock();
-               }
-       }
-
-       @Override
-       public void removeImage(Image image) {
-               lock.writeLock().lock();
-               try {
-                       allImages.remove(image.getId());
-                       soneImages.remove(image.getSone().getId(), image);
-               } finally {
-                       lock.writeLock().unlock();
-               }
-       }
-
-       @Override
-       public void bookmarkPost(Post post) {
-               memoryBookmarkDatabase.bookmarkPost(post);
-       }
-
-       @Override
-       public void unbookmarkPost(Post post) {
-               memoryBookmarkDatabase.unbookmarkPost(post);
-       }
-
-       @Override
-       public boolean isPostBookmarked(Post post) {
-               return memoryBookmarkDatabase.isPostBookmarked(post);
-       }
-
-       @Override
-       public Set<Post> getBookmarkedPosts() {
-               return memoryBookmarkDatabase.getBookmarkedPosts();
-       }
-
-       //
-       // PACKAGE-PRIVATE METHODS
-       //
-
-       /**
-        * Returns whether the given post is known.
-        *
-        * @param post
-        *              The post
-        * @return {@code true} if the post is known, {@code false} otherwise
-        */
-       boolean isPostKnown(Post post) {
-               lock.readLock().lock();
-               try {
-                       return knownPosts.contains(post.getId());
-               } finally {
-                       lock.readLock().unlock();
-               }
-       }
-
-       /**
-        * Sets whether the given post is known.
-        *
-        * @param post
-        *              The post
-        * @param known
-        *              {@code true} if the post is known, {@code false} otherwise
-        */
-       void setPostKnown(Post post, boolean known) {
-               lock.writeLock().lock();
-               try {
-                       if (known) {
-                               knownPosts.add(post.getId());
-                       } else {
-                               knownPosts.remove(post.getId());
-                       }
-               } finally {
-                       lock.writeLock().unlock();
-               }
-       }
-
-       /**
-        * Returns whether the given post reply is known.
-        *
-        * @param postReply
-        *              The post reply
-        * @return {@code true} if the given post reply is known, {@code false}
-        *         otherwise
-        */
-       boolean isPostReplyKnown(PostReply postReply) {
-               lock.readLock().lock();
-               try {
-                       return knownPostReplies.contains(postReply.getId());
-               } finally {
-                       lock.readLock().unlock();
-               }
-       }
-
-       /**
-        * Sets whether the given post reply is known.
-        *
-        * @param postReply
-        *              The post reply
-        * @param known
-        *              {@code true} if the post reply is known, {@code false} otherwise
-        */
-       void setPostReplyKnown(PostReply postReply, boolean known) {
-               lock.writeLock().lock();
-               try {
-                       if (known) {
-                               knownPostReplies.add(postReply.getId());
-                       } else {
-                               knownPostReplies.remove(postReply.getId());
-                       }
-               } finally {
-                       lock.writeLock().unlock();
-               }
-       }
-
-       //
-       // PRIVATE METHODS
-       //
-
-       /**
-        * Gets all posts for the given Sone, creating a new collection if there is
-        * none yet.
-        *
-        * @param soneId
-        *              The ID of the Sone to get the posts for
-        * @return All posts
-        */
-       private Collection<Post> getPostsFrom(String soneId) {
-               lock.readLock().lock();
-               try {
-                       return sonePosts.get(soneId);
-               } finally {
-                       lock.readLock().unlock();
-               }
-       }
-
-       /** Loads the known posts. */
-       private void loadKnownPosts() {
-               Set<String> knownPosts = configurationLoader.loadKnownPosts();
-               lock.writeLock().lock();
-               try {
-                       this.knownPosts.clear();
-                       this.knownPosts.addAll(knownPosts);
-               } finally {
-                       lock.writeLock().unlock();
-               }
-       }
-
-       /**
-        * Saves the known posts to the configuration.
-        *
-        * @throws DatabaseException
-        *              if a configuration error occurs
-        */
-       private void saveKnownPosts() throws DatabaseException {
-               lock.readLock().lock();
-               try {
-                       int postCounter = 0;
-                       for (String knownPostId : knownPosts) {
-                               configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").setValue(knownPostId);
-                       }
-                       configuration.getStringValue("KnownPosts/" + postCounter + "/ID").setValue(null);
-               } catch (ConfigurationException ce1) {
-                       throw new DatabaseException("Could not save database.", ce1);
-               } finally {
-                       lock.readLock().unlock();
-               }
-       }
-
-       /** Loads the known post replies. */
-       private void loadKnownPostReplies() {
-               Set<String> knownPostReplies = configurationLoader.loadKnownPostReplies();
-               lock.writeLock().lock();
-               try {
-                       this.knownPostReplies.clear();
-                       this.knownPostReplies.addAll(knownPostReplies);
-               } finally {
-                       lock.writeLock().unlock();
-               }
-       }
-
-       /**
-        * Saves the known post replies to the configuration.
-        *
-        * @throws DatabaseException
-        *              if a configuration error occurs
-        */
-       private void saveKnownPostReplies() throws DatabaseException {
-               lock.readLock().lock();
-               try {
-                       int replyCounter = 0;
-                       for (String knownReplyId : knownPostReplies) {
-                               configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").setValue(knownReplyId);
-                       }
-                       configuration.getStringValue("KnownReplies/" + replyCounter + "/ID").setValue(null);
-               } catch (ConfigurationException ce1) {
-                       throw new DatabaseException("Could not save database.", ce1);
-               } finally {
-                       lock.readLock().unlock();
-               }
-       }
-
-}
diff --git a/src/main/java/net/pterodactylus/sone/database/memory/MemoryDatabase.kt b/src/main/java/net/pterodactylus/sone/database/memory/MemoryDatabase.kt
new file mode 100644 (file)
index 0000000..702d4e2
--- /dev/null
@@ -0,0 +1,345 @@
+/*
+ * Sone - MemoryDatabase.java - Copyright © 2013–2016 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sone.database.memory
+
+import com.google.common.base.Preconditions.checkNotNull
+import com.google.common.collect.HashMultimap
+import com.google.common.collect.Multimap
+import com.google.common.collect.TreeMultimap
+import com.google.common.util.concurrent.AbstractService
+import com.google.inject.Inject
+import com.google.inject.Singleton
+import net.pterodactylus.sone.data.Album
+import net.pterodactylus.sone.data.Image
+import net.pterodactylus.sone.data.Post
+import net.pterodactylus.sone.data.PostReply
+import net.pterodactylus.sone.data.Reply.TIME_COMPARATOR
+import net.pterodactylus.sone.data.Sone
+import net.pterodactylus.sone.data.Sone.toAllAlbums
+import net.pterodactylus.sone.data.Sone.toAllImages
+import net.pterodactylus.sone.data.impl.AlbumBuilderImpl
+import net.pterodactylus.sone.data.impl.ImageBuilderImpl
+import net.pterodactylus.sone.database.AlbumBuilder
+import net.pterodactylus.sone.database.Database
+import net.pterodactylus.sone.database.DatabaseException
+import net.pterodactylus.sone.database.ImageBuilder
+import net.pterodactylus.sone.database.PostBuilder
+import net.pterodactylus.sone.database.PostDatabase
+import net.pterodactylus.sone.database.PostReplyBuilder
+import net.pterodactylus.sone.utils.unit
+import net.pterodactylus.util.config.Configuration
+import net.pterodactylus.util.config.ConfigurationException
+import java.util.concurrent.locks.ReentrantReadWriteLock
+import kotlin.concurrent.withLock
+
+/**
+ * Memory-based [PostDatabase] implementation.
+ *
+ * @author [David ‘Bombe’ Roden](mailto:bombe@pterodactylus.net)
+ */
+@Singleton
+class MemoryDatabase @Inject constructor(private val configuration: Configuration) : AbstractService(), Database {
+
+       private val lock = ReentrantReadWriteLock()
+       private val readLock by lazy { lock.readLock()!! }
+       private val writeLock by lazy { lock.writeLock()!! }
+       private val configurationLoader = ConfigurationLoader(configuration)
+       private val allSones = mutableMapOf<String, Sone>()
+       private val allPosts = mutableMapOf<String, Post>()
+       private val sonePosts: Multimap<String, Post> = HashMultimap.create<String, Post>()
+       private val knownPosts = mutableSetOf<String>()
+       private val allPostReplies = mutableMapOf<String, PostReply>()
+       private val sonePostReplies: Multimap<String, PostReply> = TreeMultimap.create<String, PostReply>(Comparator { leftString, rightString -> leftString.compareTo(rightString) }, TIME_COMPARATOR)
+       private val knownPostReplies = mutableSetOf<String>()
+       private val allAlbums = mutableMapOf<String, Album>()
+       private val soneAlbums: Multimap<String, Album> = HashMultimap.create<String, Album>()
+       private val allImages = mutableMapOf<String, Image>()
+       private val soneImages: Multimap<String, Image> = HashMultimap.create<String, Image>()
+       private val memoryBookmarkDatabase = MemoryBookmarkDatabase(this, configurationLoader)
+       private val memoryFriendDatabase = MemoryFriendDatabase(configurationLoader)
+
+       override val soneLoader get() = this::getSone
+
+       override val sones get() = readLock.withLock { allSones.values.toSet() }
+
+       override val localSones get() = readLock.withLock { allSones.values.filter(Sone::isLocal) }
+
+       override val remoteSones get() = readLock.withLock { allSones.values.filterNot(Sone::isLocal) }
+
+       override val bookmarkedPosts get() = memoryBookmarkDatabase.bookmarkedPosts
+
+       override fun save() {
+               saveKnownPosts()
+               saveKnownPostReplies()
+       }
+
+       override fun doStart() {
+               memoryBookmarkDatabase.start()
+               loadKnownPosts()
+               loadKnownPostReplies()
+               notifyStarted()
+       }
+
+       override fun doStop() {
+               try {
+                       memoryBookmarkDatabase.stop()
+                       save()
+                       notifyStopped()
+               } catch (de1: DatabaseException) {
+                       notifyFailed(de1)
+               }
+       }
+
+       override fun newSoneBuilder() = MemorySoneBuilder(this)
+
+       override fun storeSone(sone: Sone) {
+               writeLock.withLock {
+                       removeSone(sone)
+
+                       allSones[sone.id] = sone
+                       sonePosts.putAll(sone.id, sone.posts)
+                       for (post in sone.posts) {
+                               allPosts[post.id] = post
+                       }
+                       sonePostReplies.putAll(sone.id, sone.replies)
+                       for (postReply in sone.replies) {
+                               allPostReplies[postReply.id] = postReply
+                       }
+                       soneAlbums.putAll(sone.id, toAllAlbums.apply(sone)!!)
+                       for (album in toAllAlbums.apply(sone)!!) {
+                               allAlbums[album.id] = album
+                       }
+                       soneImages.putAll(sone.id, toAllImages.apply(sone)!!)
+                       for (image in toAllImages.apply(sone)!!) {
+                               allImages[image.id] = image
+                       }
+               }
+       }
+
+       override fun removeSone(sone: Sone) {
+               writeLock.withLock {
+                       allSones.remove(sone.id)
+                       val removedPosts = sonePosts.removeAll(sone.id)
+                       for (removedPost in removedPosts) {
+                               allPosts.remove(removedPost.id)
+                       }
+                       val removedPostReplies = sonePostReplies.removeAll(sone.id)
+                       for (removedPostReply in removedPostReplies) {
+                               allPostReplies.remove(removedPostReply.id)
+                       }
+                       val removedAlbums = soneAlbums.removeAll(sone.id)
+                       for (removedAlbum in removedAlbums) {
+                               allAlbums.remove(removedAlbum.id)
+                       }
+                       val removedImages = soneImages.removeAll(sone.id)
+                       for (removedImage in removedImages) {
+                               allImages.remove(removedImage.id)
+                       }
+               }
+       }
+
+       override fun getSone(soneId: String) = readLock.withLock { allSones[soneId] }
+
+       override fun getFriends(localSone: Sone): Collection<String> =
+                       if (!localSone.isLocal) {
+                               emptySet()
+                       } else {
+                               memoryFriendDatabase.getFriends(localSone.id)
+                       }
+
+       override fun isFriend(localSone: Sone, friendSoneId: String) =
+                       if (!localSone.isLocal) {
+                               false
+                       } else {
+                               memoryFriendDatabase.isFriend(localSone.id, friendSoneId)
+                       }
+
+       override fun addFriend(localSone: Sone, friendSoneId: String) {
+               if (!localSone.isLocal) {
+                       return
+               }
+               memoryFriendDatabase.addFriend(localSone.id, friendSoneId)
+       }
+
+       override fun removeFriend(localSone: Sone, friendSoneId: String) {
+               if (!localSone.isLocal) {
+                       return
+               }
+               memoryFriendDatabase.removeFriend(localSone.id, friendSoneId)
+       }
+
+       override fun getFollowingTime(friendSoneId: String) =
+                       memoryFriendDatabase.getFollowingTime(friendSoneId)
+
+       override fun getPost(postId: String) =
+                       readLock.withLock { allPosts[postId] }
+
+       override fun getPosts(soneId: String): Collection<Post> =
+                       sonePosts[soneId].toSet()
+
+       override fun getDirectedPosts(recipientId: String) =
+                       readLock.withLock {
+                               allPosts.values.filter {
+                                       it.recipientId.orNull() == recipientId
+                               }
+                       }
+
+       override fun newPostBuilder(): PostBuilder = MemoryPostBuilder(this, this)
+
+       override fun storePost(post: Post) {
+               checkNotNull(post, "post must not be null")
+               writeLock.withLock {
+                       allPosts[post.id] = post
+                       sonePosts[post.sone.id].add(post)
+               }
+       }
+
+       override fun removePost(post: Post) {
+               checkNotNull(post, "post must not be null")
+               writeLock.withLock {
+                       allPosts.remove(post.id)
+                       sonePosts[post.sone.id].remove(post)
+                       post.sone.removePost(post)
+               }
+       }
+
+       override fun getPostReply(id: String) = readLock.withLock { allPostReplies[id] }
+
+       override fun getReplies(postId: String) =
+                       readLock.withLock {
+                               allPostReplies.values
+                                               .filter { it.postId == postId }
+                                               .sortedWith(TIME_COMPARATOR)
+                       }
+
+       override fun newPostReplyBuilder(): PostReplyBuilder =
+                       MemoryPostReplyBuilder(this, this)
+
+       override fun storePostReply(postReply: PostReply) =
+                       writeLock.withLock {
+                               allPostReplies[postReply.id] = postReply
+                       }
+
+       override fun removePostReply(postReply: PostReply) =
+                       writeLock.withLock {
+                               allPostReplies.remove(postReply.id)
+                       }.unit
+
+       override fun getAlbum(albumId: String) = readLock.withLock { allAlbums[albumId] }
+
+       override fun newAlbumBuilder(): AlbumBuilder = AlbumBuilderImpl()
+
+       override fun storeAlbum(album: Album) =
+                       writeLock.withLock {
+                               allAlbums[album.id] = album
+                               soneAlbums.put(album.sone.id, album)
+                       }.unit
+
+       override fun removeAlbum(album: Album) =
+                       writeLock.withLock {
+                               allAlbums.remove(album.id)
+                               soneAlbums.remove(album.sone.id, album)
+                       }.unit
+
+       override fun getImage(imageId: String) = readLock.withLock { allImages[imageId] }
+
+       override fun newImageBuilder(): ImageBuilder = ImageBuilderImpl()
+
+       override fun storeImage(image: Image): Unit =
+                       writeLock.withLock {
+                               allImages[image.id] = image
+                               soneImages.put(image.sone.id, image)
+                       }
+
+       override fun removeImage(image: Image): Unit =
+                       writeLock.withLock {
+                               allImages.remove(image.id)
+                               soneImages.remove(image.sone.id, image)
+                       }
+
+       override fun bookmarkPost(post: Post) =
+                       memoryBookmarkDatabase.bookmarkPost(post)
+
+       override fun unbookmarkPost(post: Post) =
+                       memoryBookmarkDatabase.unbookmarkPost(post)
+
+       override fun isPostBookmarked(post: Post) =
+                       memoryBookmarkDatabase.isPostBookmarked(post)
+
+       protected fun isPostKnown(post: Post) = readLock.withLock { post.id in knownPosts }
+
+       protected fun setPostKnown(post: Post, known: Boolean): Unit =
+                       writeLock.withLock {
+                               if (known)
+                                       knownPosts.add(post.id)
+                               else
+                                       knownPosts.remove(post.id)
+                       }
+
+       protected fun isPostReplyKnown(postReply: PostReply) = readLock.withLock { postReply.id in knownPostReplies }
+
+       protected fun setPostReplyKnown(postReply: PostReply, known: Boolean): Unit =
+                       writeLock.withLock {
+                               if (known)
+                                       knownPostReplies.add(postReply.id)
+                               else
+                                       knownPostReplies.remove(postReply.id)
+                       }
+
+       private fun loadKnownPosts() =
+                       configurationLoader.loadKnownPosts()
+                                       .let {
+                                               writeLock.withLock {
+                                                       knownPosts.clear()
+                                                       knownPosts.addAll(it)
+                                               }
+                                       }
+
+       private fun saveKnownPosts() =
+                       try {
+                               readLock.withLock {
+                                       knownPosts.forEachIndexed { index, knownPostId ->
+                                               configuration.getStringValue("KnowsPosts/$index/ID").value = knownPostId
+                                       }
+                                       configuration.getStringValue("KnownPosts/${knownPosts.size}/ID").value = null
+                               }
+                       } catch (ce1: ConfigurationException) {
+                               throw DatabaseException("Could not save database.", ce1)
+                       }
+
+       private fun loadKnownPostReplies(): Unit =
+                       configurationLoader.loadKnownPostReplies().let { knownPostReplies ->
+                               writeLock.withLock {
+                                       this.knownPostReplies.clear()
+                                       this.knownPostReplies.addAll(knownPostReplies)
+                               }
+                       }
+
+       private fun saveKnownPostReplies() =
+                       try {
+                               readLock.withLock {
+                                       knownPostReplies.forEachIndexed { index, knownPostReply ->
+                                               configuration.getStringValue("KnownReplies/$index/ID").value = knownPostReply
+                                       }
+                                       configuration.getStringValue("KnownReplies/${knownPostReplies.size}/ID").value = null
+                               }
+                       } catch (ce1: ConfigurationException) {
+                               throw DatabaseException("Could not save database.", ce1)
+                       }
+
+}
index 36e530c..cd36ec9 100644 (file)
@@ -1,3 +1,4 @@
 package net.pterodactylus.sone.utils
 
 fun <T> T?.asList() = this?.let(::listOf) ?: emptyList<T>()
+val Any?.unit get() = Unit
index 9d704a6..d5c6ead 100644 (file)
@@ -141,6 +141,7 @@ public class MemoryDatabaseTest {
                                "album-description3").update();
                firstAlbum.addAlbum(thirdAlbum);
                Album rootAlbum = mock(Album.class);
+               when(rootAlbum.getId()).thenReturn("root");
                when(rootAlbum.getAlbums()).thenReturn(
                                asList(firstAlbum, secondAlbum));
                when(sone.getRootAlbum()).thenReturn(rootAlbum);