frostfs-api-go/pkg/object/id.go
Leonard Lyubich 047bae63d0 [#135] sdk/object: Fix IDFromV2 nil-behavior
Remove nil if-statement from IDFromV2 function to which avoids checking the
correctness of the identifier format. From now IDFromV2 returns format error
on nil argument.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
2020-09-18 10:45:11 +03:00

50 lines
949 B
Go

package object
import (
"crypto/sha256"
"github.com/nspcc-dev/neofs-api-go/v2/refs"
"github.com/pkg/errors"
)
// ID represents object identifier that
// supports different type of values.
type ID struct {
val []byte
}
// SetSHA256 sets object identifier value to SHA256 checksum.
func (id *ID) SetSHA256(v [sha256.Size]byte) {
if id != nil {
id.val = v[:]
}
}
// ToV2 converts ID to v2 ObjectID message.
func (id *ID) ToV2() *refs.ObjectID {
if id != nil {
idV2 := new(refs.ObjectID)
idV2.SetValue(id.val)
return idV2
}
return nil
}
// IDFromV2 converts v2 ObjectID message to ID.
//
// Returns an error if the format of the identifier
// in the message is broken.
func IDFromV2(idV2 *refs.ObjectID) (*ID, error) {
val := idV2.GetValue()
if ln := len(val); ln != sha256.Size {
return nil, errors.Errorf("could not convert %T to %T: invalid length %d",
idV2, (*ID)(nil), ln,
)
}
return &ID{
val: val,
}, nil
}