+++ /dev/null
-/*
- * Sone - MemoryDatabase.kt - Copyright © 2013–2020 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.*
-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.*
-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.
- */
-@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)
- private val saveRateLimiter: RateLimiter = RateLimiter.create(1.0)
- private val saveKnownPostsRateLimiter: RateLimiter = RateLimiter.create(1.0)
- private val saveKnownPostRepliesRateLimiter: RateLimiter = RateLimiter.create(1.0)
-
- 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() {
- if (saveRateLimiter.tryAcquire()) {
- 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 }
-
- fun setPostKnown(post: Post, known: Boolean): Unit =
- writeLock.withLock {
- if (known)
- knownPosts.add(post.id)
- else
- knownPosts.remove(post.id)
- saveKnownPosts()
- }
-
- protected fun isPostReplyKnown(postReply: PostReply) = readLock.withLock { postReply.id in knownPostReplies }
-
- fun setPostReplyKnown(postReply: PostReply, known: Boolean): Unit =
- writeLock.withLock {
- if (known)
- knownPostReplies.add(postReply.id)
- else
- knownPostReplies.remove(postReply.id)
- saveKnownPostReplies()
- }
-
- private fun loadKnownPosts() =
- configurationLoader.loadKnownPosts()
- .let {
- writeLock.withLock {
- knownPosts.clear()
- knownPosts.addAll(it)
- }
- }
-
- private fun saveKnownPosts() =
- saveKnownPostsRateLimiter.tryAcquire().ifTrue {
- try {
- readLock.withLock {
- knownPosts.forEachIndexed { index, knownPostId ->
- configuration.getStringValue("KnownPosts/$index/ID").value = knownPostId
- }
- configuration.getStringValue("KnownPosts/${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() =
- saveKnownPostRepliesRateLimiter.tryAcquire().ifTrue {
- 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)
- }
- }
-
-}
projects / Sone.git / blobdiff