302 lines
8.0 KiB
Go
302 lines
8.0 KiB
Go
package services
|
|
|
|
import (
|
|
"context"
|
|
"crypto/sha256"
|
|
"encoding/hex"
|
|
"fmt"
|
|
"github.com/barasher/go-exiftool"
|
|
"image"
|
|
"io"
|
|
"os"
|
|
"path/filepath"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"git.solsynth.dev/hydrogen/paperclip/pkg/internal/database"
|
|
"git.solsynth.dev/hydrogen/paperclip/pkg/internal/models"
|
|
jsoniter "github.com/json-iterator/go"
|
|
"github.com/k0kubun/go-ansi"
|
|
"github.com/rs/zerolog/log"
|
|
"github.com/schollz/progressbar/v3"
|
|
"github.com/spf13/viper"
|
|
"gopkg.in/vansante/go-ffprobe.v2"
|
|
|
|
_ "image/gif"
|
|
_ "image/jpeg"
|
|
_ "image/png"
|
|
)
|
|
|
|
var fileAnalyzeQueue = make(chan models.Attachment, 256)
|
|
|
|
func PublishAnalyzeTask(file models.Attachment) {
|
|
fileAnalyzeQueue <- file
|
|
}
|
|
|
|
func StartConsumeAnalyzeTask() {
|
|
for {
|
|
task := <-fileAnalyzeQueue
|
|
start := time.Now()
|
|
if err := AnalyzeAttachment(task); err != nil {
|
|
log.Error().Err(err).Any("task", task).Msg("A file analyze task failed...")
|
|
} else {
|
|
log.Info().Dur("elapsed", time.Since(start)).Uint("id", task.ID).Msg("A file analyze task was completed.")
|
|
}
|
|
}
|
|
}
|
|
|
|
func ScanUnanalyzedFileFromDatabase() {
|
|
workers := viper.GetInt("workers.files_analyze")
|
|
|
|
if workers < 2 {
|
|
log.Warn().Int("val", workers).Int("min", 2).Msg("The file analyzer does not have enough computing power, and the scan of unanalyzed files will not start...")
|
|
}
|
|
|
|
var attachments []models.Attachment
|
|
if err := database.C.
|
|
Where("is_uploaded = ?", true).
|
|
Where("destination = ? OR is_analyzed = ?", models.AttachmentDstTemporary, false).
|
|
Find(&attachments).Error; err != nil {
|
|
log.Error().Err(err).Msg("Scan unanalyzed files from database failed...")
|
|
return
|
|
}
|
|
|
|
if len(attachments) == 0 {
|
|
return
|
|
}
|
|
|
|
go func() {
|
|
var deletionIdSet []uint
|
|
bar := progressbar.NewOptions(len(attachments),
|
|
progressbar.OptionSetWriter(ansi.NewAnsiStdout()),
|
|
progressbar.OptionEnableColorCodes(true),
|
|
progressbar.OptionShowBytes(true),
|
|
progressbar.OptionSetWidth(15),
|
|
progressbar.OptionSetDescription("Analyzing the unanalyzed files..."),
|
|
progressbar.OptionSetTheme(progressbar.Theme{
|
|
Saucer: "[green]=[reset]",
|
|
SaucerHead: "[green]>[reset]",
|
|
SaucerPadding: " ",
|
|
BarStart: "[",
|
|
BarEnd: "]",
|
|
}))
|
|
for _, task := range attachments {
|
|
if err := AnalyzeAttachment(task); err != nil {
|
|
log.Error().Err(err).Any("task", task).Msg("A background file analyze task failed...")
|
|
deletionIdSet = append(deletionIdSet, task.ID)
|
|
}
|
|
bar.Add(1)
|
|
}
|
|
log.Info().Int("count", len(attachments)).Int("fails", len(deletionIdSet)).Msg("All unanalyzed files has been analyzed!")
|
|
|
|
if len(deletionIdSet) > 0 {
|
|
database.C.Delete(&models.Attachment{}, deletionIdSet)
|
|
}
|
|
}()
|
|
}
|
|
|
|
func AnalyzeAttachment(file models.Attachment) error {
|
|
if !file.IsUploaded {
|
|
return fmt.Errorf("file isn't finish multipart upload")
|
|
} else if file.Destination != models.AttachmentDstTemporary {
|
|
return fmt.Errorf("attachment isn't in temporary storage, unable to analyze")
|
|
}
|
|
|
|
var start time.Time
|
|
|
|
if len(file.HashCode) == 0 {
|
|
if hash, err := HashAttachment(file); err != nil {
|
|
return err
|
|
} else {
|
|
file.HashCode = hash
|
|
}
|
|
}
|
|
|
|
// Do analyze jobs
|
|
if !file.IsAnalyzed || len(file.HashCode) == 0 {
|
|
destMap := viper.GetStringMap("destinations.temporary")
|
|
|
|
var dest models.LocalDestination
|
|
rawDest, _ := jsoniter.Marshal(destMap)
|
|
_ = jsoniter.Unmarshal(rawDest, &dest)
|
|
|
|
start = time.Now()
|
|
|
|
dst := filepath.Join(dest.Path, file.Uuid)
|
|
if _, err := os.Stat(dst); os.IsNotExist(err) {
|
|
return fmt.Errorf("attachment doesn't exists in temporary storage: %v", err)
|
|
}
|
|
|
|
switch strings.SplitN(file.MimeType, "/", 2)[0] {
|
|
case "image":
|
|
// Dealing with image
|
|
reader, err := os.Open(dst)
|
|
if err != nil {
|
|
return fmt.Errorf("unable to open file: %v", err)
|
|
}
|
|
defer reader.Close()
|
|
im, _, err := image.Decode(reader)
|
|
if err != nil {
|
|
return fmt.Errorf("unable to decode file as an image: %v", err)
|
|
}
|
|
width := im.Bounds().Dx()
|
|
height := im.Bounds().Dy()
|
|
ratio := float64(width) / float64(height)
|
|
file.Metadata = map[string]any{
|
|
"width": width,
|
|
"height": height,
|
|
"ratio": ratio,
|
|
}
|
|
|
|
// Removing location EXIF data
|
|
et, err := exiftool.NewExiftool()
|
|
if err != nil {
|
|
return fmt.Errorf("error when intializing exiftool: %v", err)
|
|
}
|
|
defer et.Close()
|
|
exif := et.ExtractMetadata(dst)
|
|
for _, data := range exif {
|
|
for k, _ := range data.Fields {
|
|
if strings.HasPrefix(k, "GPS") {
|
|
data.Clear(k)
|
|
}
|
|
}
|
|
}
|
|
et.WriteMetadata(exif)
|
|
case "video":
|
|
// Dealing with video
|
|
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
|
|
defer cancel()
|
|
|
|
data, err := ffprobe.ProbeURL(ctx, dst)
|
|
if err != nil {
|
|
return fmt.Errorf("unable to analyze video information: %v", err)
|
|
}
|
|
|
|
stream := data.FirstVideoStream()
|
|
ratio := float64(stream.Width) / float64(stream.Height)
|
|
duration, _ := strconv.ParseFloat(stream.Duration, 64)
|
|
file.Metadata = map[string]any{
|
|
"width": stream.Width,
|
|
"height": stream.Height,
|
|
"ratio": ratio,
|
|
"duration": duration,
|
|
"bit_rate": stream.BitRate,
|
|
"codec_name": stream.CodecName,
|
|
"color_range": stream.ColorRange,
|
|
"color_space": stream.ColorSpace,
|
|
}
|
|
|
|
// Removing location EXIF data
|
|
et, err := exiftool.NewExiftool()
|
|
if err != nil {
|
|
return fmt.Errorf("error when intializing exiftool: %v", err)
|
|
}
|
|
defer et.Close()
|
|
exif := et.ExtractMetadata(dst)
|
|
for _, data := range exif {
|
|
for k, _ := range data.Fields {
|
|
if strings.HasPrefix(k, "GPS") {
|
|
data.Clear(k)
|
|
}
|
|
}
|
|
}
|
|
et.WriteMetadata(exif)
|
|
}
|
|
}
|
|
|
|
tx := database.C.Begin()
|
|
|
|
file.IsAnalyzed = true
|
|
|
|
linked, err := TryLinkAttachment(tx, file, file.HashCode)
|
|
if linked && err != nil {
|
|
return fmt.Errorf("unable to link file record: %v", err)
|
|
} else if !linked {
|
|
CacheAttachment(file)
|
|
if err := tx.Save(&file).Error; err != nil {
|
|
tx.Rollback()
|
|
return fmt.Errorf("unable to save file record: %v", err)
|
|
}
|
|
}
|
|
|
|
tx.Commit()
|
|
|
|
log.Info().Dur("elapsed", time.Since(start)).Uint("id", file.ID).Msg("A file analyze task was finished, starting uploading...")
|
|
|
|
start = time.Now()
|
|
|
|
// Move temporary to permanent
|
|
if !linked {
|
|
if err := ReUploadFileToPermanent(file); err != nil {
|
|
return fmt.Errorf("unable to move file to permanet storage: %v", err)
|
|
}
|
|
}
|
|
|
|
// Recycle the temporary file
|
|
file.Destination = models.AttachmentDstTemporary
|
|
PublishDeleteFileTask(file)
|
|
|
|
// Finish
|
|
log.Info().Dur("elapsed", time.Since(start)).Uint("id", file.ID).Bool("linked", linked).Msg("A file post-analyze upload task was finished.")
|
|
|
|
return nil
|
|
}
|
|
|
|
func HashAttachment(file models.Attachment) (hash string, err error) {
|
|
const chunkSize = 32 * 1024
|
|
|
|
destMap := viper.GetStringMapString("destinations.temporary")
|
|
destPath := filepath.Join(destMap["path"], file.Uuid)
|
|
|
|
// Check if the file exists
|
|
fileInfo, err := os.Stat(destPath)
|
|
if os.IsNotExist(err) {
|
|
return "", fmt.Errorf("file does not exist: %v", err)
|
|
}
|
|
|
|
// Open the file
|
|
inFile, err := os.Open(destPath)
|
|
if err != nil {
|
|
return "", fmt.Errorf("unable to open file: %v", err)
|
|
}
|
|
defer inFile.Close()
|
|
|
|
hasher := sha256.New()
|
|
|
|
// Hash the first 32KB
|
|
buf := make([]byte, chunkSize)
|
|
if _, err := inFile.Read(buf); err != nil && err != io.EOF {
|
|
return "", fmt.Errorf("error reading file: %v", err)
|
|
}
|
|
hasher.Write(buf)
|
|
|
|
// Hash the middle 32KB
|
|
middleOffset := fileInfo.Size() / 2
|
|
if _, err := inFile.Seek(middleOffset, io.SeekStart); err != nil {
|
|
return "", fmt.Errorf("error seeking to middle: %v", err)
|
|
}
|
|
if _, err := inFile.Read(buf); err != nil && err != io.EOF {
|
|
return "", fmt.Errorf("error reading middle: %v", err)
|
|
}
|
|
hasher.Write(buf)
|
|
|
|
// Hash the last 32KB
|
|
endOffset := fileInfo.Size() - chunkSize
|
|
if _, err := inFile.Seek(endOffset, io.SeekStart); err != nil {
|
|
return "", fmt.Errorf("error seeking to end: %v", err)
|
|
}
|
|
if _, err := inFile.Read(buf); err != nil && err != io.EOF {
|
|
return "", fmt.Errorf("error reading end: %v", err)
|
|
}
|
|
hasher.Write(buf)
|
|
|
|
// Hash with the file metadata
|
|
hasher.Write([]byte(fmt.Sprintf("%d", file.Size)))
|
|
|
|
// Return the combined hash
|
|
hash = hex.EncodeToString(hasher.Sum(nil))
|
|
return
|
|
}
|