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/*
This file is part of Subsonic.
Subsonic 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.
Subsonic 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 Subsonic. If not, see <http://www.gnu.org/licenses/>.
Copyright 2009 (C) Sindre Mehus
*/
package github.daneren2005.subphonic.service;
import java.util.List;
import java.util.concurrent.TimeUnit;
import org.apache.http.HttpResponse;
import android.content.Context;
import android.graphics.Bitmap;
import github.daneren2005.subphonic.domain.Indexes;
import github.daneren2005.subphonic.domain.JukeboxStatus;
import github.daneren2005.subphonic.domain.Lyrics;
import github.daneren2005.subphonic.domain.MusicDirectory;
import github.daneren2005.subphonic.domain.MusicFolder;
import github.daneren2005.subphonic.domain.Playlist;
import github.daneren2005.subphonic.domain.SearchCritera;
import github.daneren2005.subphonic.domain.SearchResult;
import github.daneren2005.subphonic.domain.Version;
import github.daneren2005.subphonic.util.CancellableTask;
import github.daneren2005.subphonic.util.LRUCache;
import github.daneren2005.subphonic.util.ProgressListener;
import github.daneren2005.subphonic.util.TimeLimitedCache;
import github.daneren2005.subphonic.util.Util;
/**
* @author Sindre Mehus
*/
public class CachedMusicService implements MusicService {
private static final int MUSIC_DIR_CACHE_SIZE = 20;
private static final int TTL_MUSIC_DIR = 5 * 60; // Five minutes
private final MusicService musicService;
private final LRUCache<String, TimeLimitedCache<MusicDirectory>> cachedMusicDirectories;
private final TimeLimitedCache<Boolean> cachedLicenseValid = new TimeLimitedCache<Boolean>(120, TimeUnit.SECONDS);
private final TimeLimitedCache<Indexes> cachedIndexes = new TimeLimitedCache<Indexes>(60 * 60, TimeUnit.SECONDS);
private final TimeLimitedCache<List<Playlist>> cachedPlaylists = new TimeLimitedCache<List<Playlist>>(60, TimeUnit.SECONDS);
private final TimeLimitedCache<List<MusicFolder>> cachedMusicFolders = new TimeLimitedCache<List<MusicFolder>>(10 * 3600, TimeUnit.SECONDS);
private String restUrl;
public CachedMusicService(MusicService musicService) {
this.musicService = musicService;
cachedMusicDirectories = new LRUCache<String, TimeLimitedCache<MusicDirectory>>(MUSIC_DIR_CACHE_SIZE);
}
@Override
public void ping(Context context, ProgressListener progressListener) throws Exception {
checkSettingsChanged(context);
musicService.ping(context, progressListener);
}
@Override
public boolean isLicenseValid(Context context, ProgressListener progressListener) throws Exception {
checkSettingsChanged(context);
Boolean result = cachedLicenseValid.get();
if (result == null) {
result = musicService.isLicenseValid(context, progressListener);
cachedLicenseValid.set(result, result ? 30L * 60L : 2L * 60L, TimeUnit.SECONDS);
}
return result;
}
@Override
public List<MusicFolder> getMusicFolders(boolean refresh, Context context, ProgressListener progressListener) throws Exception {
checkSettingsChanged(context);
if (refresh) {
cachedMusicFolders.clear();
}
List<MusicFolder> result = cachedMusicFolders.get();
if (result == null) {
result = musicService.getMusicFolders(refresh, context, progressListener);
cachedMusicFolders.set(result);
}
return result;
}
@Override
public Indexes getIndexes(String musicFolderId, boolean refresh, Context context, ProgressListener progressListener) throws Exception {
checkSettingsChanged(context);
if (refresh) {
cachedIndexes.clear();
cachedMusicFolders.clear();
cachedMusicDirectories.clear();
}
Indexes result = cachedIndexes.get();
if (result == null) {
result = musicService.getIndexes(musicFolderId, refresh, context, progressListener);
cachedIndexes.set(result);
}
return result;
}
@Override
public MusicDirectory getMusicDirectory(String id, boolean refresh, Context context, ProgressListener progressListener) throws Exception {
checkSettingsChanged(context);
TimeLimitedCache<MusicDirectory> cache = refresh ? null : cachedMusicDirectories.get(id);
MusicDirectory dir = cache == null ? null : cache.get();
if (dir == null) {
dir = musicService.getMusicDirectory(id, refresh, context, progressListener);
cache = new TimeLimitedCache<MusicDirectory>(TTL_MUSIC_DIR, TimeUnit.SECONDS);
cache.set(dir);
cachedMusicDirectories.put(id, cache);
}
return dir;
}
@Override
public SearchResult search(SearchCritera criteria, Context context, ProgressListener progressListener) throws Exception {
return musicService.search(criteria, context, progressListener);
}
@Override
public MusicDirectory getPlaylist(String id, String name, Context context, ProgressListener progressListener) throws Exception {
return musicService.getPlaylist(id, name, context, progressListener);
}
@Override
public List<Playlist> getPlaylists(boolean refresh, Context context, ProgressListener progressListener) throws Exception {
checkSettingsChanged(context);
List<Playlist> result = refresh ? null : cachedPlaylists.get();
if (result == null) {
result = musicService.getPlaylists(refresh, context, progressListener);
cachedPlaylists.set(result);
}
return result;
}
@Override
public void createPlaylist(String id, String name, List<MusicDirectory.Entry> entries, Context context, ProgressListener progressListener) throws Exception {
musicService.createPlaylist(id, name, entries, context, progressListener);
}
@Override
public Lyrics getLyrics(String artist, String title, Context context, ProgressListener progressListener) throws Exception {
return musicService.getLyrics(artist, title, context, progressListener);
}
@Override
public void scrobble(String id, boolean submission, Context context, ProgressListener progressListener) throws Exception {
musicService.scrobble(id, submission, context, progressListener);
}
@Override
public MusicDirectory getAlbumList(String type, int size, int offset, Context context, ProgressListener progressListener) throws Exception {
return musicService.getAlbumList(type, size, offset, context, progressListener);
}
@Override
public MusicDirectory getRandomSongs(int size, Context context, ProgressListener progressListener) throws Exception {
return musicService.getRandomSongs(size, context, progressListener);
}
@Override
public Bitmap getCoverArt(Context context, MusicDirectory.Entry entry, int size, boolean saveToFile, ProgressListener progressListener) throws Exception {
return musicService.getCoverArt(context, entry, size, saveToFile, progressListener);
}
@Override
public HttpResponse getDownloadInputStream(Context context, MusicDirectory.Entry song, long offset, int maxBitrate, CancellableTask task) throws Exception {
return musicService.getDownloadInputStream(context, song, offset, maxBitrate, task);
}
@Override
public Version getLocalVersion(Context context) throws Exception {
return musicService.getLocalVersion(context);
}
@Override
public Version getLatestVersion(Context context, ProgressListener progressListener) throws Exception {
return musicService.getLatestVersion(context, progressListener);
}
@Override
public String getVideoUrl(Context context, String id) {
return musicService.getVideoUrl(context, id);
}
@Override
public JukeboxStatus updateJukeboxPlaylist(List<String> ids, Context context, ProgressListener progressListener) throws Exception {
return musicService.updateJukeboxPlaylist(ids, context, progressListener);
}
@Override
public JukeboxStatus skipJukebox(int index, int offsetSeconds, Context context, ProgressListener progressListener) throws Exception {
return musicService.skipJukebox(index, offsetSeconds, context, progressListener);
}
@Override
public JukeboxStatus stopJukebox(Context context, ProgressListener progressListener) throws Exception {
return musicService.stopJukebox(context, progressListener);
}
@Override
public JukeboxStatus startJukebox(Context context, ProgressListener progressListener) throws Exception {
return musicService.startJukebox(context, progressListener);
}
@Override
public JukeboxStatus getJukeboxStatus(Context context, ProgressListener progressListener) throws Exception {
return musicService.getJukeboxStatus(context, progressListener);
}
@Override
public JukeboxStatus setJukeboxGain(float gain, Context context, ProgressListener progressListener) throws Exception {
return musicService.setJukeboxGain(gain, context, progressListener);
}
private void checkSettingsChanged(Context context) {
String newUrl = Util.getRestUrl(context, null);
if (!Util.equals(newUrl, restUrl)) {
cachedMusicFolders.clear();
cachedMusicDirectories.clear();
cachedLicenseValid.clear();
cachedIndexes.clear();
cachedPlaylists.clear();
restUrl = newUrl;
}
}
}
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