import static com.google.common.base.Predicates.not;
import static com.google.common.collect.FluentIterable.from;
import static java.util.Collections.emptyList;
+import static java.util.logging.Logger.getLogger;
import static net.pterodactylus.sone.data.Sone.LOCAL_SONE_FILTER;
import java.util.ArrayList;
import java.util.Set;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
+import java.util.logging.Level;
+import java.util.logging.Logger;
import net.pterodactylus.sone.data.Album;
import net.pterodactylus.sone.data.Image;
import net.pterodactylus.sone.data.impl.DefaultSoneBuilder;
import net.pterodactylus.sone.database.Database;
import net.pterodactylus.sone.database.DatabaseException;
-import net.pterodactylus.sone.database.PostDatabase;
import net.pterodactylus.sone.database.SoneBuilder;
import net.pterodactylus.sone.freenet.wot.Identity;
import net.pterodactylus.util.config.Configuration;
import com.google.common.collect.HashMultimap;
import com.google.common.collect.ListMultimap;
import com.google.common.collect.Maps;
-import com.google.common.collect.Multimap;
import com.google.common.collect.SetMultimap;
import com.google.common.collect.SortedSetMultimap;
import com.google.common.collect.TreeMultimap;
import com.google.inject.Inject;
/**
- * Memory-based {@link PostDatabase} implementation.
+ * Memory-based {@link Database} implementation.
*
* @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
*/
public class MemoryDatabase extends AbstractService implements Database {
+ private static final Logger logger = getLogger(MemoryDatabase.class.getName());
+
/** The lock. */
private final ReadWriteLock lock = new ReentrantReadWriteLock();
private final Map<String, Identity> identities = Maps.newHashMap();
private final Map<String, Sone> sones = 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();
- private final SetMultimap<String, String> likedPostsBySone = HashMultimap.create();
- private final SetMultimap<String, String> postLikingSones = HashMultimap.create();
-
- /** All posts by their recipient. */
- private final Multimap<String, Post> recipientPosts = HashMultimap.create();
-
- /** Whether posts are known. */
- private final Set<String> knownPosts = new HashSet<String>();
+ private final MemoryPostDatabase memoryPostDatabase;
/** All post replies by their ID. */
private final Map<String, PostReply> allPostReplies = new HashMap<String, PostReply>();
@Inject
public MemoryDatabase(Configuration configuration) {
this.configuration = configuration;
- }
-
- //
- // DATABASE METHODS
- //
-
- @Override
- public void save() throws DatabaseException {
- saveKnownPosts();
- saveKnownPostReplies();
+ memoryPostDatabase = new MemoryPostDatabase(this, lock, configuration);
}
//
@Override
protected void doStart() {
- loadKnownPosts();
+ memoryPostDatabase.start();
loadKnownPostReplies();
notifyStarted();
}
@Override
protected void doStop() {
try {
- save();
- notifyStopped();
+ memoryPostDatabase.stop();
} catch (DatabaseException de1) {
- notifyFailed(de1);
+ logger.log(Level.WARNING, "Could not stop post database!", de1);
}
+ notifyStopped();
}
@Override
@Override
public Function<String, Optional<Post>> getPost() {
- return new Function<String, Optional<Post>>() {
- @Override
- public Optional<Post> apply(String postId) {
- return (postId == null) ? Optional.<Post>absent() : getPost(postId);
- }
- };
+ return memoryPostDatabase.getPost();
}
@Override
public Optional<Post> getPost(String postId) {
- lock.readLock().lock();
- try {
- return fromNullable(allPosts.get(postId));
- } finally {
- lock.readLock().unlock();
- }
+ return memoryPostDatabase.getPost(postId);
}
@Override
public Collection<Post> getPosts(String soneId) {
- lock.readLock().lock();
- try {
- return new HashSet<Post>(sonePosts.get(soneId));
- } finally {
- lock.readLock().unlock();
- }
+ return memoryPostDatabase.getPosts(soneId);
}
@Override
public Collection<Post> getDirectedPosts(String recipientId) {
- lock.readLock().lock();
- try {
- Collection<Post> posts = recipientPosts.get(recipientId);
- return (posts == null) ? Collections.<Post>emptySet() : new HashSet<Post>(posts);
- } finally {
- lock.readLock().unlock();
- }
+ return memoryPostDatabase.getDirectedPosts(recipientId);
}
/**
*/
@Override
public boolean isPostKnown(Post post) {
- lock.readLock().lock();
- try {
- return knownPosts.contains(post.getId());
- } finally {
- lock.readLock().unlock();
- }
+ return memoryPostDatabase.isPostKnown(post);
}
/**
*/
@Override
public void setPostKnown(Post post) {
- lock.writeLock().lock();
- try {
- knownPosts.add(post.getId());
- } finally {
- lock.writeLock().unlock();
- }
+ memoryPostDatabase.setPostKnown(post);
}
@Override
public void likePost(Post post, Sone localSone) {
- lock.writeLock().lock();
- try {
- likedPostsBySone.put(localSone.getId(), post.getId());
- postLikingSones.put(post.getId(), localSone.getId());
- } finally {
- lock.writeLock().unlock();
- }
+ memoryPostDatabase.likePost(post, localSone);
}
@Override
public void unlikePost(Post post, Sone localSone) {
- lock.writeLock().lock();
- try {
- likedPostsBySone.remove(localSone.getId(), post.getId());
- postLikingSones.remove(post.getId(), localSone.getId());
- } finally {
- lock.writeLock().unlock();
- }
+ memoryPostDatabase.unlikePost(post, localSone);
}
public boolean isLiked(Post post, Sone sone) {
- lock.readLock().lock();
- try {
- return likedPostsBySone.containsEntry(sone.getId(), post.getId());
- } finally {
- lock.readLock().unlock();
- }
+ return memoryPostDatabase.isLiked(post, sone);
}
@Override
public Set<Sone> getLikes(Post post) {
- lock.readLock().lock();
- try {
- return from(postLikingSones.get(post.getId())).transform(getSone()).transformAndConcat(this.<Sone>unwrap()).toSet();
- } finally {
- lock.readLock().unlock();
- }
+ return memoryPostDatabase.getLikes(post);
}
//
@Override
public void storePost(Post post) {
- checkNotNull(post, "post must not be null");
- lock.writeLock().lock();
- try {
- allPosts.put(post.getId(), post);
- sonePosts.put(post.getSone().getId(), post);
- if (post.getRecipientId().isPresent()) {
- recipientPosts.put(post.getRecipientId().get(), post);
- }
- } finally {
- lock.writeLock().unlock();
- }
+ memoryPostDatabase.storePost(post);
}
@Override
public void removePost(Post post) {
- checkNotNull(post, "post must not be null");
- lock.writeLock().lock();
- try {
- allPosts.remove(post.getId());
- sonePosts.remove(post.getSone().getId(), post);
- if (post.getRecipientId().isPresent()) {
- recipientPosts.remove(post.getRecipientId().get(), post);
- }
- post.getSone().removePost(post);
- } finally {
- lock.writeLock().unlock();
- }
+ memoryPostDatabase.removePost(post);
}
@Override
public void storePosts(Sone sone, Collection<Post> posts) throws IllegalArgumentException {
- checkNotNull(sone, "sone must not be null");
/* verify that all posts are from the same Sone. */
- for (Post post : posts) {
- if (!sone.equals(post.getSone())) {
- throw new IllegalArgumentException(String.format("Post from different Sone found: %s", post));
- }
- }
- lock.writeLock().lock();
- try {
- /* remove all posts by the Sone. */
- sonePosts.removeAll(sone.getId());
- for (Post post : posts) {
- allPosts.remove(post.getId());
- if (post.getRecipientId().isPresent()) {
- recipientPosts.remove(post.getRecipientId().get(), post);
- }
- }
-
- /* add new posts. */
- sonePosts.putAll(sone.getId(), posts);
- for (Post post : posts) {
- allPosts.put(post.getId(), post);
- if (post.getRecipientId().isPresent()) {
- recipientPosts.put(post.getRecipientId().get(), post);
- }
- }
- } finally {
- lock.writeLock().unlock();
- }
+ memoryPostDatabase.storePosts(sone, posts);
}
@Override
public void removePosts(Sone sone) {
- checkNotNull(sone, "sone must not be null");
- lock.writeLock().lock();
- try {
- /* remove all posts by the Sone. */
- sonePosts.removeAll(sone.getId());
- for (Post post : sone.getPosts()) {
- allPosts.remove(post.getId());
- if (post.getRecipientId().isPresent()) {
- recipientPosts.remove(post.getRecipientId().get(), post);
- }
- }
- } finally {
- lock.writeLock().unlock();
- }
+ memoryPostDatabase.removePosts(sone);
}
//
// PRIVATE METHODS
//
- /** Loads the known posts. */
- private void loadKnownPosts() {
- lock.writeLock().lock();
- try {
- 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();
- }
- }
-
- /**
- * 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();
- }
- }
-
/**
* Returns all replies by the given Sone.
*
};
}
- private static <T> Function<Optional<T>, Iterable<T>> unwrap() {
+ static <T> Function<Optional<T>, Iterable<T>> unwrap() {
return new Function<Optional<T>, Iterable<T>>() {
@Override
public Iterable<T> apply(Optional<T> input) {
projects / Sone.git / blobdiff