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backup.go
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backup.go
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package backup
import (
"context"
"database/sql"
"encoding/json"
"fmt"
"io/fs"
"io/ioutil"
"os"
"path/filepath"
"github.com/lsnow99/conductorr/internal/conductorr/dbstore"
"github.com/lsnow99/conductorr/internal/conductorr/integration"
"github.com/lsnow99/conductorr/internal/conductorr/settings"
"github.com/mholt/archiver/v3"
)
type BackupData struct {
Medias []*dbstore.Media
Paths []*dbstore.Path
Profiles []*dbstore.Profile
MediaServers []*dbstore.MediaServer
Downloads []*dbstore.Download
Downloaders []*dbstore.Downloader
Indexers []*dbstore.Indexer
Version string
}
func CreateBackup(ctx context.Context) (id int, err error) {
var dir, tmpDir string
tmpDir, err = integration.MkdirTemp("conductorr_backup")
if err != nil {
return
}
dir, err = ioutil.TempDir(tmpDir, "backup")
if err != nil {
return
}
defer func() {
if err != nil {
os.RemoveAll(dir)
}
}()
// Grab all our persistent data
var tx *sql.Tx
tx, err = dbstore.NewTx(ctx, sql.TxOptions{
ReadOnly: true,
})
if err != nil {
return
}
committed := false
defer func() {
if err != nil && !committed {
tx.Rollback()
}
}()
var medias []*dbstore.Media
medias, err = dbstore.DumpMedias(tx)
if err != nil {
return
}
var downloads []*dbstore.Download
downloads, err = dbstore.DumpDownloads(tx)
if err != nil {
return
}
var mediaServers []*dbstore.MediaServer
mediaServers, err = dbstore.DumpMediaServers(tx)
if err != nil {
return
}
var downloaders []*dbstore.Downloader
downloaders, err = dbstore.DumpDownloaders(tx)
if err != nil {
return
}
var paths []*dbstore.Path
paths, err = dbstore.DumpPaths(tx)
if err != nil {
return
}
var profiles []*dbstore.Profile
profiles, err = dbstore.DumpProfiles(tx)
if err != nil {
return
}
var indexers []*dbstore.Indexer
indexers, err = dbstore.DumpIndexers(tx)
if err != nil {
return
}
err = tx.Commit()
if err != nil {
return
}
committed = true
// Remove the posters; they will be stored as files in the zip to make the JSON marshalling a little less unwieldy
posterDir := filepath.Join(dir, "posters")
err = os.Mkdir(posterDir, os.ModePerm)
if err != nil {
return
}
err = addMediaPosters(medias, posterDir)
if err != nil {
return
}
// Build the backup data object
bd := BackupData{
Medias: medias,
Paths: paths,
Profiles: profiles,
MediaServers: mediaServers,
Downloads: downloads,
Downloaders: downloaders,
Indexers: indexers,
Version: settings.Version,
}
// Write the backup data object to a file
var raw []byte
raw, err = json.Marshal(bd)
if err != nil {
return
}
dataFile := filepath.Join(dir, "data.json")
err = ioutil.WriteFile(dataFile, raw, fs.ModePerm)
if err != nil {
return
}
var outDir string
outDir, err = ioutil.TempDir(tmpDir, "backup_out")
if err != nil {
return
}
defer func() {
if err != nil {
os.RemoveAll(outDir)
}
}()
outFile := filepath.Join(outDir, "backup.zip")
err = archiver.Archive([]string{posterDir, dataFile}, outFile)
id = addBackup(outFile)
return
}
func addMediaPosters(medias []*dbstore.Media, dir string) error {
for _, media := range medias {
name := fmt.Sprintf("%d.jpeg", media.ID)
f := filepath.Join(dir, name)
if media.Poster == nil {
continue
}
if err := ioutil.WriteFile(f, *media.Poster, os.ModePerm); err != nil {
return err
}
// Clear the poster field so it isn't written to the JSON
media.Poster = nil
}
return nil
}