124 lines
2.4 KiB
Go
124 lines
2.4 KiB
Go
package scanner
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import (
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"log"
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"sync/atomic"
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"time"
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"github.com/jinzhu/gorm"
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"github.com/karrick/godirwalk"
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"github.com/pkg/errors"
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"github.com/sentriz/gonic/model"
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)
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var (
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IsScanning int32
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)
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type Scanner struct {
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db, tx *gorm.DB
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musicPath string
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seenTracks map[int]struct{}
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curFolders folderStack
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curCover string
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}
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func New(db *gorm.DB, musicPath string) *Scanner {
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return &Scanner{
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db: db,
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musicPath: musicPath,
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seenTracks: make(map[int]struct{}),
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curFolders: make(folderStack, 0),
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}
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}
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func (s *Scanner) curFolder() *model.Album {
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return s.curFolders.Peek()
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}
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func (s *Scanner) curFolderID() int {
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peek := s.curFolders.Peek()
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if peek == nil {
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return 0
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}
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return peek.ID
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}
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func (s *Scanner) MigrateDB() error {
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defer logElapsed(time.Now(), "migrating database")
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s.tx = s.db.Begin()
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defer s.tx.Commit()
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s.tx.AutoMigrate(
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model.Artist{},
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model.Track{},
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model.User{},
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model.Setting{},
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model.Play{},
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model.Album{},
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)
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s.tx.FirstOrCreate(&model.User{}, model.User{
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Name: "admin",
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Password: "admin",
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IsAdmin: true,
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})
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return nil
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}
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func (s *Scanner) Start() error {
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if atomic.LoadInt32(&IsScanning) == 1 {
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return errors.New("already scanning")
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}
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atomic.StoreInt32(&IsScanning, 1)
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defer atomic.StoreInt32(&IsScanning, 0)
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s.tx = s.db.Begin()
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defer s.tx.Commit()
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if err := s.startScan(); err != nil {
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return errors.Wrap(err, "start scan")
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}
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if err := s.startClean(); err != nil {
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return errors.Wrap(err, "start clean")
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}
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return nil
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}
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func logElapsed(start time.Time, name string) {
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elapsed := time.Since(start)
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log.Printf("finished %s in %s\n", name, elapsed)
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}
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func (s *Scanner) startScan() error {
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defer logElapsed(time.Now(), "scanning")
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err := godirwalk.Walk(s.musicPath, &godirwalk.Options{
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Callback: s.callbackItem,
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PostChildrenCallback: s.callbackPost,
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Unsorted: true,
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})
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if err != nil {
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return errors.Wrap(err, "walking filesystem")
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}
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return nil
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}
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func (s *Scanner) startClean() error {
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defer logElapsed(time.Now(), "cleaning database")
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var tracks []*model.Track
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err := s.tx.
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Select("id").
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Find(&tracks).
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Error
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if err != nil {
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return errors.Wrap(err, "scanning tracks")
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}
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var deleted int
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for _, track := range tracks {
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_, ok := s.seenTracks[track.ID]
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if !ok {
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s.tx.Delete(track)
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deleted++
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}
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}
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log.Printf("removed %d tracks\n", deleted)
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return nil
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}
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