/
refresher.go
153 lines (137 loc) 路 4.07 KB
/
refresher.go
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package scanner
import (
"context"
"fmt"
"path/filepath"
"strings"
"time"
"github.com/Masterminds/squirrel"
"github.com/navidrome/navidrome/consts"
"github.com/navidrome/navidrome/core/artwork"
"github.com/navidrome/navidrome/log"
"github.com/navidrome/navidrome/model"
"github.com/navidrome/navidrome/utils"
"github.com/navidrome/navidrome/utils/slice"
"golang.org/x/exp/maps"
)
// refresher is responsible for rolling up mediafiles attributes into albums attributes,
// and albums attributes into artists attributes. This is done by accumulating all album and artist IDs
// found during scan, and "refreshing" the albums and artists when flush is called.
//
// The actual mappings happen in MediaFiles.ToAlbum() and Albums.ToAlbumArtist()
type refresher struct {
ds model.DataStore
album map[string]struct{}
artist map[string]struct{}
dirMap dirMap
cacheWarmer artwork.CacheWarmer
}
func newRefresher(ds model.DataStore, cw artwork.CacheWarmer, dirMap dirMap) *refresher {
return &refresher{
ds: ds,
album: map[string]struct{}{},
artist: map[string]struct{}{},
dirMap: dirMap,
cacheWarmer: cw,
}
}
func (r *refresher) accumulate(mf model.MediaFile) {
if mf.AlbumID != "" {
r.album[mf.AlbumID] = struct{}{}
}
if mf.AlbumArtistID != "" {
r.artist[mf.AlbumArtistID] = struct{}{}
}
}
func (r *refresher) flush(ctx context.Context) error {
err := r.flushMap(ctx, r.album, "album", r.refreshAlbums)
if err != nil {
return err
}
r.album = map[string]struct{}{}
err = r.flushMap(ctx, r.artist, "artist", r.refreshArtists)
if err != nil {
return err
}
r.artist = map[string]struct{}{}
return nil
}
type refreshCallbackFunc = func(ctx context.Context, ids ...string) error
func (r *refresher) flushMap(ctx context.Context, m map[string]struct{}, entity string, refresh refreshCallbackFunc) error {
if len(m) == 0 {
return nil
}
ids := maps.Keys(m)
chunks := utils.BreakUpStringSlice(ids, 100)
for _, chunk := range chunks {
err := refresh(ctx, chunk...)
if err != nil {
log.Error(ctx, fmt.Sprintf("Error writing %ss to the DB", entity), err)
return err
}
}
return nil
}
func (r *refresher) refreshAlbums(ctx context.Context, ids ...string) error {
mfs, err := r.ds.MediaFile(ctx).GetAll(model.QueryOptions{Filters: squirrel.Eq{"album_id": ids}})
if err != nil {
return err
}
if len(mfs) == 0 {
return nil
}
repo := r.ds.Album(ctx)
grouped := slice.Group(mfs, func(m model.MediaFile) string { return m.AlbumID })
for _, group := range grouped {
songs := model.MediaFiles(group)
a := songs.ToAlbum()
var updatedAt time.Time
a.ImageFiles, updatedAt = r.getImageFiles(songs.Dirs())
if updatedAt.After(a.UpdatedAt) {
a.UpdatedAt = updatedAt
}
err := repo.Put(&a)
if err != nil {
return err
}
r.cacheWarmer.PreCache(a.CoverArtID())
}
return nil
}
func (r *refresher) getImageFiles(dirs []string) (string, time.Time) {
var imageFiles []string
var updatedAt time.Time
for _, dir := range dirs {
stats := r.dirMap[dir]
for _, img := range stats.Images {
imageFiles = append(imageFiles, filepath.Join(dir, img))
}
if stats.ImagesUpdatedAt.After(updatedAt) {
updatedAt = stats.ImagesUpdatedAt
}
}
return strings.Join(imageFiles, consts.Zwsp), updatedAt
}
func (r *refresher) refreshArtists(ctx context.Context, ids ...string) error {
albums, err := r.ds.Album(ctx).GetAll(model.QueryOptions{Filters: squirrel.Eq{"album_artist_id": ids}})
if err != nil {
return err
}
if len(albums) == 0 {
return nil
}
repo := r.ds.Artist(ctx)
grouped := slice.Group(albums, func(al model.Album) string { return al.AlbumArtistID })
for _, group := range grouped {
a := model.Albums(group).ToAlbumArtist()
// Force a external metadata lookup on next access
a.ExternalInfoUpdatedAt = time.Time{}
// Do not remove old metadata
err := repo.Put(&a, "album_count", "genres", "external_info_updated_at", "mbz_artist_id", "name", "order_artist_name", "size", "sort_artist_name", "song_count")
if err != nil {
return err
}
r.cacheWarmer.PreCache(a.CoverArtID())
}
return nil
}