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purge.go
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purge.go
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package photoprism
import (
"errors"
"fmt"
"runtime/debug"
"time"
"github.com/dustin/go-humanize/english"
"github.com/photoprism/photoprism/internal/config"
"github.com/photoprism/photoprism/internal/entity"
"github.com/photoprism/photoprism/internal/mutex"
"github.com/photoprism/photoprism/internal/query"
"github.com/photoprism/photoprism/pkg/clean"
"github.com/photoprism/photoprism/pkg/fs"
)
// Purge represents a worker that removes missing files from search results.
type Purge struct {
conf *config.Config
files *Files
}
// NewPurge returns a new purge worker.
func NewPurge(conf *config.Config, files *Files) *Purge {
instance := &Purge{
conf: conf,
files: files,
}
return instance
}
// Start removes missing files from search results.
func (w *Purge) Start(opt PurgeOptions) (purgedFiles map[string]bool, purgedPhotos map[string]bool, updated int, err error) {
defer func() {
if r := recover(); r != nil {
err = fmt.Errorf("purge: %s (panic)\nstack: %s", r, debug.Stack())
log.Error(err)
}
}()
originalsPath := w.conf.OriginalsPath()
// Check if originals folder is empty.
if fs.DirIsEmpty(originalsPath) {
return purgedFiles, purgedPhotos, 0, err
}
var ignore fs.Done
if opt.Ignore != nil {
ignore = opt.Ignore
} else {
ignore = make(fs.Done)
}
purgedFiles = make(map[string]bool)
purgedPhotos = make(map[string]bool)
if err = mutex.IndexWorker.Start(); err != nil {
log.Warnf("purge: %s (start)", err.Error())
return purgedFiles, purgedPhotos, 0, err
}
defer mutex.IndexWorker.Stop()
// Count updates.
updatedFiles := 0
updatedDuplicates := 0
updatedPhotos := 0
// Total number of updates.
updates := func() int {
return updatedFiles + updatedDuplicates + updatedPhotos
}
// Check files.
startFiles := time.Now()
limit := 10000
offset := 0
for {
files, err := query.Files(limit, offset, opt.Path, true)
if err != nil {
return purgedFiles, purgedPhotos, updates(), err
}
if len(files) == 0 {
break
}
for _, file := range files {
if mutex.IndexWorker.Canceled() {
return purgedFiles, purgedPhotos, updates(), errors.New("purge canceled")
}
fileName := FileName(file.FileRoot, file.FileName)
if ignore[fileName].Exists() || purgedFiles[fileName] {
continue
}
if file.FileMissing {
if fs.FileExists(fileName) {
if opt.Dry {
log.Infof("purge: found %s", clean.Log(file.FileName))
continue
}
updatedFiles++
if err := file.Found(); err != nil {
log.Errorf("purge: %s", err)
} else {
log.Infof("purge: found %s", clean.Log(file.FileName))
}
}
} else if !fs.FileExists(fileName) {
if opt.Dry {
purgedFiles[fileName] = true
log.Infof("purge: file %s would be flagged as missing", clean.Log(file.FileName))
continue
}
updatedFiles++
wasPrimary := file.FilePrimary
if err := file.Purge(); err != nil {
log.Errorf("purge: %s", err)
continue
}
w.files.Remove(file.FileName, file.FileRoot)
purgedFiles[fileName] = true
log.Infof("purge: flagged file %s as missing", clean.Log(file.FileName))
if !wasPrimary {
continue
}
if err := query.SetPhotoPrimary(file.PhotoUID, ""); err != nil {
log.Infof("purge: %s", err)
}
}
}
if mutex.IndexWorker.Canceled() {
return purgedFiles, purgedPhotos, updates(), errors.New("purge canceled")
}
offset += limit
}
log.Debugf("purge: updated %s [%s]", english.Plural(updatedFiles, "file", "files"), time.Since(startFiles))
// Check duplicates.
startDuplicates := time.Now()
limit = 10000
offset = 0
for {
files, err := query.Duplicates(limit, offset, opt.Path)
if err != nil {
return purgedFiles, purgedPhotos, updates(), err
}
if len(files) == 0 {
break
}
for _, file := range files {
if mutex.IndexWorker.Canceled() {
return purgedFiles, purgedPhotos, updates(), errors.New("purge canceled")
}
fileName := FileName(file.FileRoot, file.FileName)
if ignore[fileName].Exists() || purgedFiles[fileName] {
continue
}
if !fs.FileExists(fileName) {
if opt.Dry {
purgedFiles[fileName] = true
log.Infof("purge: duplicate %s would be removed from index", clean.Log(file.FileName))
continue
}
updatedDuplicates++
if err := file.Purge(); err != nil {
log.Errorf("purge: %s", err)
} else {
w.files.Remove(file.FileName, file.FileRoot)
purgedFiles[fileName] = true
log.Infof("purge: removed duplicate %s from index", clean.Log(file.FileName))
}
}
}
if mutex.IndexWorker.Canceled() {
return purgedFiles, purgedPhotos, updates(), errors.New("purge canceled")
}
offset += limit
}
log.Debugf("purge: updated %s [%s]", english.Plural(updatedDuplicates, "duplicate", "duplicates"), time.Since(startDuplicates))
// Check photos.
startPhotos := time.Now()
limit = 10000
offset = 0
for {
photos, err := query.MissingPhotos(limit, offset)
if err != nil {
return purgedFiles, purgedPhotos, updates(), err
}
if len(photos) == 0 {
break
}
for _, photo := range photos {
if mutex.IndexWorker.Canceled() {
return purgedFiles, purgedPhotos, updates(), errors.New("purge canceled")
}
if purgedPhotos[photo.PhotoUID] {
continue
}
if opt.Dry {
purgedPhotos[photo.PhotoUID] = true
log.Infof("purge: %s would be removed", photo.String())
continue
}
updatedPhotos++
if files, err := photo.Delete(opt.Hard); err != nil {
log.Errorf("purge: %s (delete photo)", err)
} else {
purgedPhotos[photo.PhotoUID] = true
if opt.Hard {
log.Infof("purge: permanently removed %s", photo.String())
} else {
log.Infof("purge: flagged photo %s as deleted", photo.String())
}
// Remove files from lookup table.
for _, file := range files {
w.files.Remove(file.FileName, file.FileRoot)
}
}
}
if mutex.IndexWorker.Canceled() {
return purgedFiles, purgedPhotos, updates(), errors.New("purge canceled")
}
offset += limit
}
log.Debugf("purge: updated %s [%s]", english.Plural(updatedPhotos, "photo", "photos"), time.Since(startPhotos))
// Skip the index update if there are no changes.
if !opt.Force && updates() == 0 {
return purgedFiles, purgedPhotos, updates(), nil
}
startIndex := time.Now()
if err = query.FixPrimaries(); err != nil {
log.Errorf("index: %s (update primary files)", err)
}
// Set photo quality scores to -1 if files are missing.
if err = query.FlagHiddenPhotos(); err != nil {
return purgedFiles, purgedPhotos, updates(), err
}
// Remove orphan index entries.
if opt.Dry {
if files, err := query.OrphanFiles(); err != nil {
log.Errorf("index: %s (find orphan files)", err)
} else if l := len(files); l > 0 {
log.Infof("index: found %s", english.Plural(l, "orphan file", "orphan files"))
} else {
log.Infof("index: found no orphan files")
}
} else {
if err = query.PurgeOrphans(); err != nil {
log.Errorf("index: %s (purge orphans)", err)
}
// Regenerate search index columns.
entity.File{}.RegenerateIndex()
}
// Hide missing album contents.
if err = query.UpdateMissingAlbumEntries(); err != nil {
log.Errorf("index: %s (update album entries)", err)
}
// Remove unused entries from the places table.
if err = query.PurgePlaces(); err != nil {
log.Errorf("index: %s (purge places)", err)
}
// Update precalculated photo and file counts.
if err = entity.UpdateCounts(); err != nil {
log.Warnf("index: %s (update counts)", err)
}
// Update album, subject, and label cover thumbs.
if err = query.UpdateCovers(); err != nil {
log.Warnf("index: %s (update covers)", err)
}
log.Debugf("purge: updated index [%s]", time.Since(startIndex))
return purgedFiles, purgedPhotos, updates(), nil
}
// Cancel stops the current operation.
func (w *Purge) Cancel() {
mutex.IndexWorker.Cancel()
}