func isMigrated(db *bolt.DB, name string) (bool, error) {
found := false
err := db.View(func(tx *bolt.Tx) error {
b := tx.Bucket([]byte(dbBucket))
if b == nil {
return fmt.Errorf("unknown bucket: %v", dbBucket)
}
if dat := b.Get([]byte("isMigrated:" + name)); dat != nil {
found = true
}
return nil
})
return found, err
}
func decode(db *bolt.DB, name string, dst interface{}) error {
var data []byte
err := db.View(func(tx *bolt.Tx) error {
b := tx.Bucket([]byte(dbBucket))
if b == nil {
return fmt.Errorf("unknown bucket: %v", dbBucket)
}
data = b.Get([]byte(name))
return nil
})
if err != nil {
return err
}
gr, err := gzip.NewReader(bytes.NewReader(data))
if err != nil {
return err
}
defer gr.Close()
return gob.NewDecoder(gr).Decode(dst)
}