public CacheDao() {
File subsonicHome = SettingsService.getSubsonicHome();
File dbDir = new File(subsonicHome, "cache");
dbFile = new File(dbDir, "cache.dat");
if (!dbDir.exists()) {
dbDir.mkdirs();
}
// if (dbFile.exists()) {
// try {
// Defragment.defrag(dbFile.getPath());
// }catch (IOException e) {
// e.printStackTrace();
// }
// }
try {
openDatabase(dbFile);
} catch (Throwable x) {
LOG.error("Failed to open " + dbFile + ", deleting it: " + x);
dbFile.delete();
openDatabase(dbFile);
}
}
public void index(Album album) {
try {
albumId3Writer.addDocument(ALBUM_ID3.createDocument(album));
} catch (Exception x) {
LOG.error("Failed to create search index for " + album, x);
}
}
public void index(Artist artist, MusicFolder musicFolder) {
try {
artistId3Writer.addDocument(ARTIST_ID3.createDocument(artist, musicFolder));
} catch (Exception x) {
LOG.error("Failed to create search index for " + artist, x);
}
}
/**
* Returns a number of random songs.
*
* @param criteria Search criteria.
* @return List of random songs.
*/
public List<MediaFile> getRandomSongs(RandomSearchCriteria criteria) {
List<MediaFile> result = new ArrayList<MediaFile>();
IndexReader reader = null;
try {
reader = createIndexReader(SONG);
Searcher searcher = new IndexSearcher(reader);
BooleanQuery query = new BooleanQuery();
query.add(
new TermQuery(new Term(FIELD_MEDIA_TYPE, MediaFile.MediaType.MUSIC.name().toLowerCase())),
BooleanClause.Occur.MUST);
if (criteria.getGenre() != null) {
String genre = normalizeGenre(criteria.getGenre());
query.add(new TermQuery(new Term(FIELD_GENRE, genre)), BooleanClause.Occur.MUST);
}
if (criteria.getFromYear() != null || criteria.getToYear() != null) {
NumericRangeQuery<Integer> rangeQuery =
NumericRangeQuery.newIntRange(
FIELD_YEAR, criteria.getFromYear(), criteria.getToYear(), true, true);
query.add(rangeQuery, BooleanClause.Occur.MUST);
}
List<SpanTermQuery> musicFolderQueries = new ArrayList<SpanTermQuery>();
for (MusicFolder musicFolder : criteria.getMusicFolders()) {
musicFolderQueries.add(
new SpanTermQuery(new Term(FIELD_FOLDER, musicFolder.getPath().getPath())));
}
query.add(
new SpanOrQuery(musicFolderQueries.toArray(new SpanQuery[musicFolderQueries.size()])),
BooleanClause.Occur.MUST);
TopDocs topDocs = searcher.search(query, null, Integer.MAX_VALUE);
List<ScoreDoc> scoreDocs = Lists.newArrayList(topDocs.scoreDocs);
Random random = new Random(System.currentTimeMillis());
while (!scoreDocs.isEmpty() && result.size() < criteria.getCount()) {
int index = random.nextInt(scoreDocs.size());
Document doc = searcher.doc(scoreDocs.remove(index).doc);
int id = Integer.valueOf(doc.get(FIELD_ID));
try {
addIfNotNull(mediaFileService.getMediaFile(id), result);
} catch (Exception x) {
LOG.warn("Failed to get media file " + id);
}
}
} catch (Throwable x) {
LOG.error("Failed to search or random songs.", x);
} finally {
FileUtil.closeQuietly(reader);
}
return result;
}
public void startIndexing() {
try {
artistWriter = createIndexWriter(ARTIST);
artistId3Writer = createIndexWriter(ARTIST_ID3);
albumWriter = createIndexWriter(ALBUM);
albumId3Writer = createIndexWriter(ALBUM_ID3);
songWriter = createIndexWriter(SONG);
} catch (Exception x) {
LOG.error("Failed to create search index.", x);
}
}
private synchronized File getImageCacheDirectory(int size) {
File dir = new File(SettingsService.getSubsonicHome(), "thumbs");
dir = new File(dir, String.valueOf(size));
if (!dir.exists()) {
if (dir.mkdirs()) {
LOG.info("Created thumbnail cache " + dir);
} else {
LOG.error("Failed to create thumbnail cache " + dir);
}
}
return dir;
}
public void index(MediaFile mediaFile) {
try {
if (mediaFile.isFile()) {
songWriter.addDocument(SONG.createDocument(mediaFile));
} else if (mediaFile.isAlbum()) {
albumWriter.addDocument(ALBUM.createDocument(mediaFile));
} else {
artistWriter.addDocument(ARTIST.createDocument(mediaFile));
}
} catch (Exception x) {
LOG.error("Failed to create search index for " + mediaFile, x);
}
}
public void stopIndexing() {
try {
artistWriter.optimize();
artistId3Writer.optimize();
albumWriter.optimize();
albumId3Writer.optimize();
songWriter.optimize();
} catch (Exception x) {
LOG.error("Failed to create search index.", x);
} finally {
FileUtil.closeQuietly(artistId3Writer);
FileUtil.closeQuietly(artistWriter);
FileUtil.closeQuietly(albumWriter);
FileUtil.closeQuietly(albumId3Writer);
FileUtil.closeQuietly(songWriter);
}
}
public CacheElement getCacheElement(int type, String key) {
dbLock.readLock().lock();
try {
ObjectSet<CacheElement> result = db.query(new CacheElementPredicate(type, key));
if (result.size() > 1) {
LOG.error(
"Programming error. Got "
+ result.size()
+ " cache elements of type "
+ type
+ " and key "
+ key);
}
return result.isEmpty() ? null : result.get(0);
} finally {
dbLock.readLock().unlock();
}
}
private long getFileLength(TranscodingService.Parameters parameters) {
MediaFile file = parameters.getMediaFile();
if (!parameters.isDownsample() && !parameters.isTranscode()) {
return file.getFileSize();
}
Integer duration = file.getDurationSeconds();
Integer maxBitRate = parameters.getMaxBitRate();
if (duration == null) {
LOG.warn("Unknown duration for " + file + ". Unable to estimate transcoded size.");
return file.getFileSize();
}
if (maxBitRate == null) {
LOG.error("Unknown bit rate for " + file + ". Unable to estimate transcoded size.");
return file.getFileSize();
}
return duration * maxBitRate * 1000L / 8L;
}
private LongRange parseAndConvertOffsetSeconds(String offsetSeconds, MediaFile file) {
if (offsetSeconds == null) {
return null;
}
try {
Integer duration = file.getDurationSeconds();
Long fileSize = file.getFileSize();
if (duration == null || fileSize == null) {
return null;
}
float offset = Float.parseFloat(offsetSeconds);
// Convert from time offset to byte offset.
long byteOffset = (long) (fileSize * (offset / duration));
return new LongRange(byteOffset, Long.MAX_VALUE);
} catch (Exception x) {
LOG.error("Failed to parse and convert time offset: " + offsetSeconds, x);
return null;
}
}
/**
* Returns a number of random albums, using ID3 tag.
*
* @param count Number of albums to return.
* @param musicFolders Only return albums from these folders.
* @return List of random albums.
*/
public List<Album> getRandomAlbumsId3(int count, List<MusicFolder> musicFolders) {
List<Album> result = new ArrayList<Album>();
IndexReader reader = null;
try {
reader = createIndexReader(ALBUM_ID3);
Searcher searcher = new IndexSearcher(reader);
List<SpanTermQuery> musicFolderQueries = new ArrayList<SpanTermQuery>();
for (MusicFolder musicFolder : musicFolders) {
musicFolderQueries.add(
new SpanTermQuery(
new Term(FIELD_FOLDER_ID, NumericUtils.intToPrefixCoded(musicFolder.getId()))));
}
Query query =
new SpanOrQuery(musicFolderQueries.toArray(new SpanQuery[musicFolderQueries.size()]));
TopDocs topDocs = searcher.search(query, null, Integer.MAX_VALUE);
List<ScoreDoc> scoreDocs = Lists.newArrayList(topDocs.scoreDocs);
Random random = new Random(System.currentTimeMillis());
while (!scoreDocs.isEmpty() && result.size() < count) {
int index = random.nextInt(scoreDocs.size());
Document doc = searcher.doc(scoreDocs.remove(index).doc);
int id = Integer.valueOf(doc.get(FIELD_ID));
try {
addIfNotNull(albumDao.getAlbum(id), result);
} catch (Exception x) {
LOG.warn("Failed to get album file " + id, x);
}
}
} catch (Throwable x) {
LOG.error("Failed to search for random albums.", x);
} finally {
FileUtil.closeQuietly(reader);
}
return result;
}
public SearchResult search(
SearchCriteria criteria, List<MusicFolder> musicFolders, IndexType indexType) {
SearchResult result = new SearchResult();
int offset = criteria.getOffset();
int count = criteria.getCount();
result.setOffset(offset);
IndexReader reader = null;
try {
reader = createIndexReader(indexType);
Searcher searcher = new IndexSearcher(reader);
Analyzer analyzer = new SubsonicAnalyzer();
MultiFieldQueryParser queryParser =
new MultiFieldQueryParser(
LUCENE_VERSION, indexType.getFields(), analyzer, indexType.getBoosts());
BooleanQuery query = new BooleanQuery();
query.add(queryParser.parse(analyzeQuery(criteria.getQuery())), BooleanClause.Occur.MUST);
List<SpanTermQuery> musicFolderQueries = new ArrayList<SpanTermQuery>();
for (MusicFolder musicFolder : musicFolders) {
if (indexType == ALBUM_ID3 || indexType == ARTIST_ID3) {
musicFolderQueries.add(
new SpanTermQuery(
new Term(FIELD_FOLDER_ID, NumericUtils.intToPrefixCoded(musicFolder.getId()))));
} else {
musicFolderQueries.add(
new SpanTermQuery(new Term(FIELD_FOLDER, musicFolder.getPath().getPath())));
}
}
query.add(
new SpanOrQuery(musicFolderQueries.toArray(new SpanQuery[musicFolderQueries.size()])),
BooleanClause.Occur.MUST);
TopDocs topDocs = searcher.search(query, null, offset + count);
result.setTotalHits(topDocs.totalHits);
int start = Math.min(offset, topDocs.totalHits);
int end = Math.min(start + count, topDocs.totalHits);
for (int i = start; i < end; i++) {
Document doc = searcher.doc(topDocs.scoreDocs[i].doc);
switch (indexType) {
case SONG:
case ARTIST:
case ALBUM:
MediaFile mediaFile = mediaFileService.getMediaFile(Integer.valueOf(doc.get(FIELD_ID)));
addIfNotNull(mediaFile, result.getMediaFiles());
break;
case ARTIST_ID3:
Artist artist = artistDao.getArtist(Integer.valueOf(doc.get(FIELD_ID)));
addIfNotNull(artist, result.getArtists());
break;
case ALBUM_ID3:
Album album = albumDao.getAlbum(Integer.valueOf(doc.get(FIELD_ID)));
addIfNotNull(album, result.getAlbums());
break;
default:
break;
}
}
} catch (Throwable x) {
LOG.error("Failed to execute Lucene search.", x);
} finally {
FileUtil.closeQuietly(reader);
}
return result;
}
