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clean_generated.go
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clean_generated.go
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package task
import (
"context"
"errors"
"fmt"
"io/fs"
"os"
"path/filepath"
"strconv"
"github.com/stashapp/stash/internal/manager/config"
"github.com/stashapp/stash/pkg/job"
"github.com/stashapp/stash/pkg/logger"
"github.com/stashapp/stash/pkg/models"
"github.com/stashapp/stash/pkg/models/paths"
)
type CleanGeneratedOptions struct {
BlobFiles bool `json:"blobs"`
Sprites bool `json:"sprites"`
Screenshots bool `json:"screenshots"`
Transcodes bool `json:"transcodes"`
Markers bool `json:"markers"`
ImageThumbnails bool `json:"imageThumbnails"`
DryRun bool `json:"dryRun"`
}
type BlobCleaner interface {
EntryExists(ctx context.Context, checksum string) (bool, error)
}
type CleanGeneratedJob struct {
Options CleanGeneratedOptions
Paths *paths.Paths
BlobsStorageType config.BlobsStorageType
VideoFileNamingAlgorithm models.HashAlgorithm
BlobCleaner BlobCleaner
Repository models.Repository
dryRunPrefix string
totalTasks int
tasksComplete int
}
func (j *CleanGeneratedJob) deleteFile(path string) {
if j.Options.DryRun {
logger.Debugf("would delete file: %s", path)
return
}
if err := os.Remove(path); err != nil {
logger.Errorf("error deleting file %s: %v", path, err)
}
}
func (j *CleanGeneratedJob) deleteDir(path string) {
if j.Options.DryRun {
logger.Debugf("would delete file: %s", path)
return
}
if err := os.RemoveAll(path); err != nil {
logger.Errorf("error deleting directory %s: %v", path, err)
}
}
func (j *CleanGeneratedJob) countTasks() int {
tasks := 0
if j.Options.BlobFiles {
tasks++
}
if j.Options.Sprites {
tasks++
}
if j.Options.Screenshots {
tasks++
}
if j.Options.Transcodes {
tasks++
}
if j.Options.Markers {
tasks++
}
if j.Options.ImageThumbnails {
tasks++
}
return tasks
}
func (j *CleanGeneratedJob) taskComplete(progress *job.Progress) {
j.tasksComplete++
progress.SetPercent(float64(j.tasksComplete) / float64(j.totalTasks))
}
func (j *CleanGeneratedJob) logError(err error) {
if !errors.Is(err, context.Canceled) {
logger.Error(err)
}
}
func (j *CleanGeneratedJob) Execute(ctx context.Context, progress *job.Progress) {
j.tasksComplete = 0
if !j.BlobsStorageType.IsValid() {
logger.Errorf("invalid blobs storage type: %s", j.BlobsStorageType)
return
}
if !j.VideoFileNamingAlgorithm.IsValid() {
logger.Errorf("invalid video file naming algorithm: %s", j.VideoFileNamingAlgorithm)
return
}
if j.Options.DryRun {
j.dryRunPrefix = "[dry run] "
}
logger.Infof("Cleaning generated files %s", j.dryRunPrefix)
j.totalTasks = j.countTasks()
if j.Options.BlobFiles {
progress.ExecuteTask("Cleaning blob files", func() {
if err := j.cleanBlobFiles(ctx, progress); err != nil {
j.logError(fmt.Errorf("error cleaning blob files: %w", err))
}
})
j.taskComplete(progress)
}
if j.Options.Sprites {
progress.ExecuteTask("Cleaning sprite files", func() {
if err := j.cleanSpriteFiles(ctx, progress); err != nil {
j.logError(fmt.Errorf("error cleaning sprite files: %w", err))
}
})
j.taskComplete(progress)
}
if j.Options.Screenshots {
progress.ExecuteTask("Cleaning screenshot files", func() {
if err := j.cleanScreenshotFiles(ctx, progress); err != nil {
j.logError(fmt.Errorf("error cleaning screenshot files: %w", err))
}
})
j.taskComplete(progress)
}
if j.Options.Transcodes {
progress.ExecuteTask("Cleaning transcode files", func() {
if err := j.cleanTranscodeFiles(ctx, progress); err != nil {
j.logError(fmt.Errorf("error cleaning transcode files: %w", err))
}
})
j.taskComplete(progress)
}
if j.Options.Markers {
progress.ExecuteTask("Cleaning marker files", func() {
if err := j.cleanMarkerFiles(ctx, progress); err != nil {
j.logError(fmt.Errorf("error cleaning marker files: %w", err))
}
})
j.taskComplete(progress)
}
if j.Options.ImageThumbnails {
progress.ExecuteTask("Cleaning thumbnail files", func() {
if err := j.cleanThumbnailFiles(ctx, progress); err != nil {
j.logError(fmt.Errorf("error cleaning thumbnail files: %w", err))
}
})
j.taskComplete(progress)
}
if job.IsCancelled(ctx) {
logger.Info("Stopping due to user request")
return
}
logger.Infof("Finished cleaning generated files")
}
func (j *CleanGeneratedJob) setTaskProgress(taskProgress float64, progress *job.Progress) {
progress.SetPercent((float64(j.tasksComplete) + taskProgress) / float64(j.totalTasks))
}
func (j *CleanGeneratedJob) logDelete(format string, args ...interface{}) {
logger.Infof(j.dryRunPrefix+format, args...)
}
// estimates the progress by the hash prefix - first two characters
// this is a rough estimate, but it's better than nothing
// the prefix ranges from 00 to ff
func (j *CleanGeneratedJob) estimateProgress(hashPrefix string) (float64, error) {
toInt, err := strconv.ParseInt(hashPrefix, 16, 64)
if err != nil {
return 0, err
}
const total = 256 // ff
return float64(toInt) / total, nil
}
func (j *CleanGeneratedJob) setProgressFromFilename(prefix string, progress *job.Progress) {
p, err := j.estimateProgress(prefix)
if err != nil {
logger.Errorf("error estimating progress: %v", err)
return
}
j.setTaskProgress(p, progress)
}
func (j *CleanGeneratedJob) getIntraFolderPrefix(basename string) (string, error) {
var hash string
_, err := fmt.Sscanf(basename, "%2x", &hash)
if err != nil {
return "", err
}
return fmt.Sprintf("%x", hash), nil
}
func (j *CleanGeneratedJob) getBlobFileHash(basename string) (string, error) {
var hash string
_, err := fmt.Sscanf(basename, "%32x", &hash)
if err != nil {
return "", err
}
return fmt.Sprintf("%x", hash), nil
}
func (j *CleanGeneratedJob) cleanBlobFiles(ctx context.Context, progress *job.Progress) error {
if job.IsCancelled(ctx) {
return nil
}
if j.BlobsStorageType != config.BlobStorageTypeFilesystem {
logger.Debugf("skipping blob file cleanup, storage type is not filesystem")
return nil
}
logger.Infof("Cleaning blob files")
// walk through the blob directory
if err := filepath.Walk(j.Paths.Blobs, func(path string, info fs.FileInfo, err error) error {
if err != nil {
return err
}
if err = ctx.Err(); err != nil {
return err
}
if info.IsDir() {
if path == j.Paths.Blobs {
return nil
}
// ignore any directory that isn't a two character hash prefix
_, err := j.getIntraFolderPrefix(info.Name())
if err != nil {
logger.Warnf("Ignoring unknown directory: %s", path)
return fs.SkipDir
}
// estimate progress by the hash prefix
if filepath.Dir(path) == j.Paths.Blobs {
hashPrefix := filepath.Base(path)
j.setProgressFromFilename(hashPrefix, progress)
}
return nil
}
blobname := info.Name()
// ignore any files that aren't a 32 character hash
_, err = j.getBlobFileHash(blobname)
if err != nil {
logger.Warnf("ignoring unknown blob file: %s", blobname)
return nil
}
// if blob entry does not exist, delete the file
if err := j.Repository.WithReadTxn(ctx, func(ctx context.Context) error {
exists, err := j.BlobCleaner.EntryExists(ctx, blobname)
if err != nil {
return err
}
if !exists {
j.logDelete("deleting unused blob file: %s", blobname)
j.deleteFile(path)
}
return nil
}); err != nil {
logger.Errorf("error checking blob entry: %v", err)
return nil
}
return nil
}); err != nil {
return err
}
return nil
}
func (j *CleanGeneratedJob) getScenesWithHash(ctx context.Context, hash string) ([]*models.Scene, error) {
fp := models.Fingerprint{
Fingerprint: hash,
}
if j.VideoFileNamingAlgorithm == models.HashAlgorithmMd5 {
fp.Type = models.FingerprintTypeMD5
} else {
fp.Type = models.FingerprintTypeOshash
}
return j.Repository.Scene.FindByFingerprints(ctx, []models.Fingerprint{fp})
}
const (
md5Length = 32
oshashLength = 16
)
func (j *CleanGeneratedJob) hashPatternPrefix() string {
hashLen := oshashLength
if j.VideoFileNamingAlgorithm == models.HashAlgorithmMd5 {
hashLen = md5Length
}
return fmt.Sprintf("%%%dx", hashLen)
}
func (j *CleanGeneratedJob) getSpriteFileHash(basename string) (string, error) {
patternPrefix := j.hashPatternPrefix()
spritePattern := patternPrefix + "_sprite.jpg"
var hash string
_, err := fmt.Sscanf(basename, spritePattern, &hash)
if err != nil {
// also try thumbs
thumbPattern := patternPrefix + "_thumbs.vtt"
_, err = fmt.Sscanf(basename, thumbPattern, &hash)
if err != nil {
return "", err
}
}
return fmt.Sprintf("%x", hash), nil
}
func (j *CleanGeneratedJob) cleanSpriteFiles(ctx context.Context, progress *job.Progress) error {
if job.IsCancelled(ctx) {
return nil
}
logger.Infof("Cleaning sprite files")
// walk through the sprite directory
if err := filepath.Walk(j.Paths.Generated.Vtt, func(path string, info fs.FileInfo, err error) error {
if err != nil {
return err
}
if err = ctx.Err(); err != nil {
return err
}
if info.IsDir() {
return nil
}
filename := info.Name()
hash, err := j.getSpriteFileHash(filename)
if err != nil {
logger.Warnf("Ignoring unknown sprite file: %s", filename)
return nil
}
j.setProgressFromFilename(hash[0:2], progress)
var exists []*models.Scene
if err := j.Repository.WithReadTxn(ctx, func(ctx context.Context) error {
exists, err = j.getScenesWithHash(ctx, hash)
return err
}); err != nil {
logger.Errorf("error checking scene entry for sprite: %v", err)
return nil
}
if len(exists) == 0 {
j.logDelete("deleting unused sprite file: %s", filename)
j.deleteFile(path)
}
return nil
}); err != nil {
return err
}
return nil
}
func (j *CleanGeneratedJob) cleanSceneFiles(ctx context.Context, path string, typ string, getSceneFileHash func(filename string) (string, error), progress *job.Progress) error {
if job.IsCancelled(ctx) {
return nil
}
logger.Infof("Cleaning %s files", typ)
// walk through the sprite directory
if err := filepath.Walk(path, func(path string, info fs.FileInfo, err error) error {
if err != nil {
return err
}
if info.IsDir() {
return nil
}
if err = ctx.Err(); err != nil {
return err
}
filename := info.Name()
hash, err := getSceneFileHash(filename)
if err != nil {
logger.Warnf("Ignoring unknown %s file: %s", typ, filename)
return nil
}
j.setProgressFromFilename(hash[0:2], progress)
var exists []*models.Scene
if err := j.Repository.WithReadTxn(ctx, func(ctx context.Context) error {
exists, err = j.getScenesWithHash(ctx, hash)
return err
}); err != nil {
logger.Errorf("error checking scene entry: %v", err)
return nil
}
if len(exists) == 0 {
j.logDelete("deleting unused %s file: %s", typ, filename)
j.deleteFile(path)
}
return nil
}); err != nil {
return err
}
return nil
}
func (j *CleanGeneratedJob) getScreenshotFileHash(basename string) (string, error) {
var hash string
var ext string
// include the extension - which could be mp4/jpg/webp
_, err := fmt.Sscanf(basename, j.hashPatternPrefix()+".%s", &hash, &ext)
if err != nil {
return "", err
}
return fmt.Sprintf("%x", hash), nil
}
func (j *CleanGeneratedJob) cleanScreenshotFiles(ctx context.Context, progress *job.Progress) error {
return j.cleanSceneFiles(ctx, j.Paths.Generated.Screenshots, "screenshot", j.getScreenshotFileHash, progress)
}
func (j *CleanGeneratedJob) getTranscodeFileHash(basename string) (string, error) {
var hash string
_, err := fmt.Sscanf(basename, j.hashPatternPrefix()+".mp4", &hash)
if err != nil {
return "", err
}
return fmt.Sprintf("%x", hash), nil
}
func (j *CleanGeneratedJob) cleanTranscodeFiles(ctx context.Context, progress *job.Progress) error {
return j.cleanSceneFiles(ctx, j.Paths.Generated.Transcodes, "transcode", j.getTranscodeFileHash, progress)
}
func (j *CleanGeneratedJob) getMarkerSceneFileHash(basename string) (string, error) {
var hash string
_, err := fmt.Sscanf(basename, j.hashPatternPrefix(), &hash)
if err != nil {
return "", err
}
return fmt.Sprintf("%x", hash), nil
}
func (j *CleanGeneratedJob) getMarkerFileSeconds(basename string) (int, error) {
var ret int
var ext string
// include the extension - which could be mp4/jpg/webp
_, err := fmt.Sscanf(basename, "%d.%s", &ret, &ext)
if err != nil {
return 0, err
}
return ret, nil
}
func (j *CleanGeneratedJob) cleanMarkerFiles(ctx context.Context, progress *job.Progress) error {
if job.IsCancelled(ctx) {
return nil
}
logger.Infof("Cleaning marker files")
var scenes []*models.Scene
var sceneHash string
var markers []*models.SceneMarker
// walk through the markers directory
if err := filepath.Walk(j.Paths.Generated.Markers, func(path string, info fs.FileInfo, err error) error {
if err != nil {
return err
}
if err = ctx.Err(); err != nil {
return err
}
if info.IsDir() {
// ignore markers directory
if path == j.Paths.Generated.Markers {
return nil
}
markers = nil
if filepath.Dir(path) != j.Paths.Generated.Markers {
logger.Warnf("Ignoring unknown marker directory: %s", path)
return nil
}
sceneHash, err = j.getMarkerSceneFileHash(info.Name())
if err != nil {
logger.Warnf("Ignoring unknown marker directory: %s", path)
return nil
}
j.setProgressFromFilename(sceneHash[0:2], progress)
// check if the scene exists
if err := j.Repository.WithReadTxn(ctx, func(ctx context.Context) error {
var err error
scenes, err = j.getScenesWithHash(ctx, sceneHash)
if err != nil {
return fmt.Errorf("error checking scene entry: %v", err)
}
if len(scenes) == 0 {
j.logDelete("deleting unused marker directory: %s", sceneHash)
j.deleteDir(path)
} else {
// get the markers now
for _, scene := range scenes {
thisMarkers, err := j.Repository.SceneMarker.FindBySceneID(ctx, scene.ID)
if err != nil {
return fmt.Errorf("error getting markers for scene: %v", err)
}
markers = append(markers, thisMarkers...)
}
}
return nil
}); err != nil {
logger.Error(err.Error())
}
return nil
}
filename := info.Name()
seconds, err := j.getMarkerFileSeconds(filename)
if err != nil {
logger.Warnf("Ignoring unknown marker file: %s", filename)
return nil
}
// scenes should be set by the directory walk
hash := filepath.Base(filepath.Dir(path))
if hash != sceneHash {
logger.Errorf("internal error: scene hash mismatch: %s != %s", hash, sceneHash)
return nil
}
if len(scenes) == 0 {
logger.Errorf("no scenes found for marker file: %s", filename)
return nil
}
// find the marker
var marker *models.SceneMarker
for _, m := range markers {
if int(m.Seconds) == seconds {
marker = m
break
}
}
if marker == nil {
// not found, delete the file
j.logDelete("deleting unused marker file: %s", filename)
j.deleteFile(path)
}
return nil
}); err != nil {
return err
}
return nil
}
func (j *CleanGeneratedJob) getImagesWithHash(ctx context.Context, checksum string) ([]*models.Image, error) {
var exists []*models.Image
if err := j.Repository.WithReadTxn(ctx, func(ctx context.Context) error {
// if scene entry does not exist, delete the file
var err error
exists, err = j.Repository.Image.FindByChecksum(ctx, checksum)
return err
}); err != nil {
return nil, err
}
return exists, nil
}
func (j *CleanGeneratedJob) getThumbnailFileHash(basename string) (string, error) {
var (
hash string
width int
ext string
)
// include the extension - which could be jpg/webp
_, err := fmt.Sscanf(basename, "%32x_%d.%s", &hash, &width, &ext)
if err != nil {
return "", err
}
return fmt.Sprintf("%x", hash), nil
}
func (j *CleanGeneratedJob) cleanThumbnailFiles(ctx context.Context, progress *job.Progress) error {
if job.IsCancelled(ctx) {
return nil
}
logger.Infof("Cleaning image thumbnail files")
// walk through the sprite directory
if err := filepath.Walk(j.Paths.Generated.Thumbnails, func(path string, info fs.FileInfo, err error) error {
if err != nil {
return err
}
if err = ctx.Err(); err != nil {
return err
}
if info.IsDir() {
if path == j.Paths.Generated.Thumbnails {
return nil
}
// ensure the directory is a hash prefix
_, err := j.getIntraFolderPrefix(info.Name())
if err != nil {
logger.Warnf("Ignoring unknown thumbnail directory: %s", path)
return nil
}
// estimate progress by the hash prefix
if filepath.Dir(path) == j.Paths.Generated.Thumbnails {
hashPrefix := filepath.Base(path)
j.setProgressFromFilename(hashPrefix, progress)
}
return nil
}
filename := info.Name()
checksum, err := j.getThumbnailFileHash(filename)
if err != nil {
logger.Warnf("Ignoring unknown thumbnail file: %s", filename)
return nil
}
exists, err := j.getImagesWithHash(ctx, checksum)
if err != nil {
logger.Errorf("error checking image entry: %v", err)
return nil
}
if len(exists) == 0 {
j.logDelete("deleting unused thumbnail file: %s", filename)
j.deleteFile(path)
}
return nil
}); err != nil {
return err
}
return nil
}