33 lines
490 B
Go
33 lines
490 B
Go
package bolt
|
|
|
|
import (
|
|
"encoding/binary"
|
|
|
|
"github.com/boltdb/bolt"
|
|
)
|
|
|
|
const (
|
|
DB_VERSION byte = 'v'
|
|
)
|
|
|
|
func (b *BoltBackend) runMigrations() error {
|
|
return b.db.Update(func(txn *bolt.Tx) error {
|
|
var version uint16
|
|
v := txn.Bucket(bucketSettings).Get([]byte{DB_VERSION})
|
|
if v == nil {
|
|
version = 0
|
|
} else {
|
|
version = binary.BigEndian.Uint16(v)
|
|
}
|
|
|
|
// do the migrations in increasing steps (there is no rollback)
|
|
//
|
|
|
|
if version < 0 {
|
|
// ...
|
|
}
|
|
|
|
return nil
|
|
})
|
|
}
|