/*
- * Sone - MemoryPostDatabase.java - Copyright © 2013 David Roden
+ * Sone - MemoryDatabase.java - Copyright © 2013 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
package net.pterodactylus.sone.database.memory;
+import static com.google.common.base.Optional.fromNullable;
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 java.util.Collections.unmodifiableCollection;
+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.UUID;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
+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.AbstractPostBuilder;
+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.SoneProvider;
import net.pterodactylus.util.config.Configuration;
import net.pterodactylus.util.config.ConfigurationException;
import com.google.common.base.Optional;
+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;
/**
* Memory-based {@link PostDatabase} implementation.
*
* @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
*/
-public class MemoryPostDatabase implements PostDatabase {
+@Singleton
+public class MemoryDatabase extends AbstractService implements Database {
/** The lock. */
private final ReadWriteLock lock = new ReentrantReadWriteLock();
/** The Sone provider. */
private final SoneProvider soneProvider;
+ /** The configuration. */
+ private final Configuration configuration;
+
+ 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 Map<String, Collection<Post>> sonePosts = new HashMap<String, Collection<Post>>();
-
- /** All posts by their recipient. */
- private final Map<String, Collection<Post>> recipientPosts = new HashMap<String, Collection<Post>>();
+ 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();
+
/**
* Creates a new memory database.
*
* @param soneProvider
- * The Sone provider
+ * The Sone provider
+ * @param configuration
+ * The configuration for loading and saving elements
*/
@Inject
- public MemoryPostDatabase(SoneProvider soneProvider) {
+ public MemoryDatabase(SoneProvider soneProvider, Configuration configuration) {
this.soneProvider = soneProvider;
+ this.configuration = configuration;
}
//
- // POSTPROVIDER METHODS
+ // DATABASE METHODS
//
/**
- * {@inheritDocs}
+ * 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() {
+ loadKnownPosts();
+ loadKnownPostReplies();
+ notifyStarted();
+ }
+
+ /** {@inheritDocs} */
+ @Override
+ protected void doStop() {
+ try {
+ save();
+ notifyStopped();
+ } catch (DatabaseException de1) {
+ notifyFailed(de1);
+ }
+ }
+
+ @Override
+ public void storeSone(Sone sone) {
+ lock.writeLock().lock();
+ try {
+ 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());
+ }
+
+ 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 Optional<Sone> getSone(String soneId) {
+ lock.readLock().lock();
+ try {
+ return fromNullable(allSones.get(soneId));
+ } finally {
+ lock.readLock().unlock();
+ }
+ }
+
+ @Override
+ public Collection<Sone> getSones() {
+ lock.readLock().lock();
+ try {
+ return unmodifiableCollection(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();
+ }
+ }
+
+ //
+ // POSTPROVIDER METHODS
+ //
+
+ /** {@inheritDocs} */
+ @Override
public Optional<Post> getPost(String postId) {
lock.readLock().lock();
try {
- return Optional.fromNullable(allPosts.get(postId));
+ return fromNullable(allPosts.get(postId));
} finally {
lock.readLock().unlock();
}
}
- /**
- * {@inheritDocs}
- */
+ /** {@inheritDocs} */
@Override
public Collection<Post> getPosts(String soneId) {
return new HashSet<Post>(getPostsFrom(soneId));
}
- /**
- * {@inheritDocs}
- */
+ /** {@inheritDocs} */
@Override
- public Collection<Post> getDirectedPosts(String recipientId) {
+ public Collection<Post> getDirectedPosts(final String recipientId) {
lock.readLock().lock();
try {
- Collection<Post> posts = recipientPosts.get(recipientId);
- return (posts == null) ? Collections.<Post> emptySet() : new HashSet<Post>(posts);
+ 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}
- */
+ /** {@inheritDocs} */
@Override
public PostBuilder newPostBuilder() {
- return new MemoryPostBuilder(soneProvider);
+ return new MemoryPostBuilder(this, soneProvider);
}
//
// POSTSTORE METHODS
//
- /**
- * {@inheritDocs}
- */
+ /** {@inheritDocs} */
@Override
public void storePost(Post post) {
checkNotNull(post, "post must not be null");
try {
allPosts.put(post.getId(), post);
getPostsFrom(post.getSone().getId()).add(post);
- if (post.getRecipientId().isPresent()) {
- getPostsTo(post.getRecipientId().get()).add(post);
- }
} finally {
lock.writeLock().unlock();
}
}
- /**
- * {@inheritDocs}
- */
+ /** {@inheritDocs} */
@Override
public void removePost(Post post) {
checkNotNull(post, "post must not be null");
try {
allPosts.remove(post.getId());
getPostsFrom(post.getSone().getId()).remove(post);
- if (post.getRecipientId().isPresent()) {
- getPostsTo(post.getRecipientId().get()).remove(post);
- }
post.getSone().removePost(post);
} finally {
lock.writeLock().unlock();
}
}
- /**
- * {@inheritDocs}
- */
+ /** {@inheritDocs} */
@Override
public void storePosts(Sone sone, Collection<Post> posts) throws IllegalArgumentException {
checkNotNull(sone, "sone must not be null");
lock.writeLock().lock();
try {
/* remove all posts by the Sone. */
- getPostsFrom(sone.getId()).clear();
- for (Post post : posts) {
+ Collection<Post> oldPosts = getPostsFrom(sone.getId());
+ for (Post post : oldPosts) {
allPosts.remove(post.getId());
- if (post.getRecipientId().isPresent()) {
- getPostsTo(post.getRecipientId().get()).remove(post);
- }
}
/* add new posts. */
getPostsFrom(sone.getId()).addAll(posts);
for (Post post : posts) {
allPosts.put(post.getId(), post);
- if (post.getRecipientId().isPresent()) {
- getPostsTo(post.getRecipientId().get()).add(post);
- }
}
} finally {
lock.writeLock().unlock();
}
}
- /**
- * {@inheritDocs}
- */
+ /** {@inheritDocs} */
@Override
public void removePosts(Sone sone) {
checkNotNull(sone, "sone must not be null");
getPostsFrom(sone.getId()).clear();
for (Post post : sone.getPosts()) {
allPosts.remove(post.getId());
- if (post.getRecipientId().isPresent()) {
- getPostsTo(post.getRecipientId().get()).remove(post);
- }
}
} finally {
lock.writeLock().unlock();
}
//
- // POSTDATABASE METHODS
+ // POSTREPLYPROVIDER METHODS
//
- /**
- * {@inheritDocs}
- */
+ /** {@inheritDocs} */
+ @Override
+ public Optional<PostReply> getPostReply(String id) {
+ lock.readLock().lock();
+ try {
+ return fromNullable(allPostReplies.get(id));
+ } finally {
+ lock.readLock().unlock();
+ }
+ }
+
+ /** {@inheritDocs} */
@Override
- public void loadKnownPosts(Configuration configuration, String prefix) {
+ 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, soneProvider);
+ }
+
+ //
+ // POSTREPLYSTORE METHODS
+ //
+
+ /** {@inheritDocs} */
+ @Override
+ public void storePostReply(PostReply postReply) {
lock.writeLock().lock();
try {
- int postCounter = 0;
- while (true) {
- String knownPostId = configuration.getStringValue(prefix + postCounter++ + "/ID").getValue(null);
- if (knownPostId == null) {
- break;
- }
- knownPosts.add(knownPostId);
+ allPostReplies.put(postReply.getId(), postReply);
+ } finally {
+ lock.writeLock().unlock();
+ }
+ }
+
+ /** {@inheritDocs} */
+ @Override
+ public void storePostReplies(Sone sone, Collection<PostReply> postReplies) {
+ checkNotNull(sone, "sone must not be null");
+ /* verify that all posts are from the same Sone. */
+ for (PostReply postReply : postReplies) {
+ if (!sone.equals(postReply.getSone())) {
+ throw new IllegalArgumentException(String.format("PostReply from different Sone found: %s", postReply));
+ }
+ }
+
+ lock.writeLock().lock();
+ try {
+ /* remove all post replies of the Sone. */
+ for (PostReply postReply : getRepliesFrom(sone.getId())) {
+ removePostReply(postReply);
+ }
+ for (PostReply postReply : postReplies) {
+ allPostReplies.put(postReply.getId(), postReply);
+ sonePostReplies.put(postReply.getSone().getId(), postReply);
}
} finally {
lock.writeLock().unlock();
}
}
- /**
- * {@inheritDocs}
- */
+ /** {@inheritDocs} */
@Override
- public void saveKnownPosts(Configuration configuration, String prefix) throws ConfigurationException {
- lock.readLock().lock();
+ public void removePostReply(PostReply postReply) {
+ lock.writeLock().lock();
try {
- int postCounter = 0;
- for (String knownPostId : knownPosts) {
- configuration.getStringValue(prefix + postCounter++ + "/ID").setValue(knownPostId);
+ allPostReplies.remove(postReply.getId());
+ } finally {
+ lock.writeLock().unlock();
+ }
+ }
+
+ /** {@inheritDocs} */
+ @Override
+ public void removePostReplies(Sone sone) {
+ checkNotNull(sone, "sone must not be null");
+
+ lock.writeLock().lock();
+ try {
+ for (PostReply postReply : sone.getReplies()) {
+ removePostReply(postReply);
}
- configuration.getStringValue(prefix + postCounter + "/ID").setValue(null);
+ } finally {
+ lock.writeLock().unlock();
+ }
+ }
+
+ //
+ // ALBUMPROVDER METHODS
+ //
+
+ @Override
+ public Optional<Album> getAlbum(String albumId) {
+ lock.readLock().lock();
+ try {
+ return fromNullable(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
+ //
+
+ @Override
+ public Optional<Image> getImage(String imageId) {
+ lock.readLock().lock();
+ try {
+ return fromNullable(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();
+ }
+ }
+
+ //
// PACKAGE-PRIVATE METHODS
//
* Returns whether the given post is known.
*
* @param post
- * The post
+ * The post
* @return {@code true} if the post is known, {@code false} otherwise
*/
boolean isPostKnown(Post post) {
* Sets whether the given post is known.
*
* @param post
- * The post
+ * The post
* @param known
- * {@code true} if the post is known, {@code false} otherwise
+ * {@code true} if the post is known, {@code false} otherwise
*/
void setPostKnown(Post post, boolean known) {
lock.writeLock().lock();
}
}
+ /**
+ * 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
//
* none yet.
*
* @param soneId
- * The ID of the Sone to get the posts for
+ * The ID of the Sone to get the posts for
* @return All posts
*/
private Collection<Post> getPostsFrom(String soneId) {
- Collection<Post> posts = null;
lock.readLock().lock();
try {
- posts = sonePosts.get(soneId);
+ return sonePosts.get(soneId);
} finally {
lock.readLock().unlock();
}
- if (posts != null) {
- return posts;
- }
+ }
- posts = new HashSet<Post>();
+ /** Loads the known posts. */
+ private void loadKnownPosts() {
lock.writeLock().lock();
try {
- sonePosts.put(soneId, posts);
+ int postCounter = 0;
+ while (true) {
+ String knownPostId = configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").getValue(null);
+ if (knownPostId == null) {
+ break;
+ }
+ knownPosts.add(knownPostId);
+ }
} finally {
lock.writeLock().unlock();
}
-
- return posts;
}
/**
- * Gets all posts that are directed the given Sone, creating a new
- * collection if there is none yet.
+ * Saves the known posts to the configuration.
*
- * @param recipientId
- * The ID of the Sone to get the posts for
- * @return All posts
+ * @throws DatabaseException
+ * if a configuration error occurs
*/
- private Collection<Post> getPostsTo(String recipientId) {
- Collection<Post> posts = null;
+ private void saveKnownPosts() throws DatabaseException {
lock.readLock().lock();
try {
- posts = recipientPosts.get(recipientId);
+ 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();
}
- if (posts != null) {
- return posts;
+ }
+
+ /**
+ * Returns all replies by the given Sone.
+ *
+ * @param id
+ * The ID of the Sone
+ * @return The post replies of the Sone, sorted by time (newest first)
+ */
+ private Collection<PostReply> getRepliesFrom(String id) {
+ lock.readLock().lock();
+ try {
+ return unmodifiableCollection(sonePostReplies.get(id));
+ } finally {
+ lock.readLock().unlock();
}
+ }
- posts = new HashSet<Post>();
+ /** Loads the known post replies. */
+ private void loadKnownPostReplies() {
lock.writeLock().lock();
try {
- recipientPosts.put(recipientId, posts);
+ int replyCounter = 0;
+ while (true) {
+ String knownReplyId = configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").getValue(null);
+ if (knownReplyId == null) {
+ break;
+ }
+ knownPostReplies.add(knownReplyId);
+ }
} finally {
lock.writeLock().unlock();
}
-
- return posts;
}
/**
- * {@link PostBuilder} implementation that creates a {@link MemoryPost}.
+ * Saves the known post replies to the configuration.
*
- * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ * @throws DatabaseException
+ * if a configuration error occurs
*/
- private class MemoryPostBuilder extends AbstractPostBuilder {
-
- /**
- * Creates a new memory post builder.
- *
- * @param soneProvider
- * The Sone provider
- */
- public MemoryPostBuilder(SoneProvider soneProvider) {
- super(soneProvider);
- }
-
- /**
- * {@inheritDocs}
- */
- @Override
- public Post build() throws IllegalStateException {
- validate();
- Post post = new MemoryPost(MemoryPostDatabase.this, soneProvider, randomId ? UUID.randomUUID().toString() : id, senderId, recipientId, currentTime ? System.currentTimeMillis() : time, text);
- post.setKnown(isPostKnown(post));
- return post;
+ 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();
}
-
}
}
projects / Sone.git / blobdiff