stash/pkg/manager/checksum.go

74 lines
2.2 KiB
Go

package manager
import (
"context"
"errors"
"github.com/stashapp/stash/pkg/logger"
"github.com/stashapp/stash/pkg/manager/config"
"github.com/stashapp/stash/pkg/models"
)
func setInitialMD5Config(ctx context.Context, txnManager models.TransactionManager) {
// if there are no scene files in the database, then default the
// VideoFileNamingAlgorithm config setting to oshash and calculateMD5 to
// false, otherwise set them to true for backwards compatibility purposes
var count int
if err := txnManager.WithReadTxn(ctx, func(r models.ReaderRepository) error {
var err error
count, err = r.Scene().Count()
return err
}); err != nil {
logger.Errorf("Error while counting scenes: %s", err.Error())
return
}
usingMD5 := count != 0
defaultAlgorithm := models.HashAlgorithmOshash
if usingMD5 {
defaultAlgorithm = models.HashAlgorithmMd5
}
config := config.GetInstance()
config.SetChecksumDefaultValues(defaultAlgorithm, usingMD5)
if err := config.Write(); err != nil {
logger.Errorf("Error while writing configuration file: %s", err.Error())
}
}
// ValidateVideoFileNamingAlgorithm validates changing the
// VideoFileNamingAlgorithm configuration flag.
//
// If setting VideoFileNamingAlgorithm to MD5, then this function will ensure
// that all checksum values are set on all scenes.
//
// Likewise, if VideoFileNamingAlgorithm is set to oshash, then this function
// will ensure that all oshash values are set on all scenes.
func ValidateVideoFileNamingAlgorithm(txnManager models.TransactionManager, newValue models.HashAlgorithm) error {
// if algorithm is being set to MD5, then all checksums must be present
return txnManager.WithReadTxn(context.TODO(), func(r models.ReaderRepository) error {
qb := r.Scene()
if newValue == models.HashAlgorithmMd5 {
missingMD5, err := qb.CountMissingChecksum()
if err != nil {
return err
}
if missingMD5 > 0 {
return errors.New("some checksums are missing on scenes. Run Scan with calculateMD5 set to true")
}
} else if newValue == models.HashAlgorithmOshash {
missingOSHash, err := qb.CountMissingOSHash()
if err != nil {
return err
}
if missingOSHash > 0 {
return errors.New("some oshash values are missing on scenes. Run Scan to populate")
}
}
return nil
})
}