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splitinfo.go
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splitinfo.go
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package object
import (
"errors"
"fmt"
"github.com/nspcc-dev/neofs-api-go/v2/object"
"github.com/nspcc-dev/neofs-api-go/v2/refs"
oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
)
// SplitInfo is an SDK representation of [object.SplitInfo].
type SplitInfo object.SplitInfo
// NewSplitInfoFromV2 wraps v2 [object.SplitInfo] message to [SplitInfo].
//
// Nil object.SplitInfo converts to nil.
func NewSplitInfoFromV2(v2 *object.SplitInfo) *SplitInfo {
return (*SplitInfo)(v2)
}
// NewSplitInfo creates and initializes blank [SplitInfo].
//
// Defaults:
// - splitID: nil;
// - lastPart nil;
// - link: nil.
func NewSplitInfo() *SplitInfo {
return NewSplitInfoFromV2(new(object.SplitInfo))
}
// ToV2 converts [SplitInfo] to v2 [object.SplitInfo] message.
//
// Nil SplitInfo converts to nil.
//
// The value returned shares memory with the structure itself, so changing it can lead to data corruption.
// Make a copy if you need to change it.
func (s *SplitInfo) ToV2() *object.SplitInfo {
return (*object.SplitInfo)(s)
}
// SplitID returns [SplitID] if it has been set.
//
// The value returned shares memory with the structure itself, so changing it can lead to data corruption.
// Make a copy if you need to change it.
//
// See also [SplitInfo.SetSplitID].
func (s *SplitInfo) SplitID() *SplitID {
return NewSplitIDFromV2(
(*object.SplitInfo)(s).GetSplitID())
}
// SetSplitID sets split ID in object ID. It resets split ID if nil passed.
//
// See also [SplitInfo.SplitID].
func (s *SplitInfo) SetSplitID(v *SplitID) {
(*object.SplitInfo)(s).SetSplitID(v.ToV2())
}
// LastPart returns last object ID, can be used to retrieve original object.
// The second return value is a flag, indicating if the last part is present.
//
// See also [SplitInfo.SetLastPart].
func (s SplitInfo) LastPart() (v oid.ID, isSet bool) {
v2 := (object.SplitInfo)(s)
lpV2 := v2.GetLastPart()
if lpV2 != nil {
_ = v.ReadFromV2(*lpV2)
isSet = true
}
return
}
// SetLastPart sets the last object ID.
//
// See also [SplitInfo.LastPart].
func (s *SplitInfo) SetLastPart(v oid.ID) {
var idV2 refs.ObjectID
v.WriteToV2(&idV2)
(*object.SplitInfo)(s).SetLastPart(&idV2)
}
// Link returns a linker object ID.
// The second return value is a flag, indicating if the last part is present.
//
// See also [SplitInfo.SetLink].
func (s SplitInfo) Link() (v oid.ID, isSet bool) {
v2 := (object.SplitInfo)(s)
linkV2 := v2.GetLink()
if linkV2 != nil {
_ = v.ReadFromV2(*linkV2)
isSet = true
}
return
}
// SetLink sets linker object ID.
//
// See also [SplitInfo.Link].
func (s *SplitInfo) SetLink(v oid.ID) {
var idV2 refs.ObjectID
v.WriteToV2(&idV2)
(*object.SplitInfo)(s).SetLink(&idV2)
}
// Marshal marshals [SplitInfo] into a protobuf binary form.
//
// See also [SplitInfo.Unmarshal].
func (s *SplitInfo) Marshal() ([]byte, error) {
return (*object.SplitInfo)(s).StableMarshal(nil), nil
}
// Unmarshal unmarshals protobuf binary representation of [SplitInfo].
//
// See also [SplitInfo.Marshal].
func (s *SplitInfo) Unmarshal(data []byte) error {
err := (*object.SplitInfo)(s).Unmarshal(data)
if err != nil {
return err
}
return formatCheckSI((*object.SplitInfo)(s))
}
// MarshalJSON implements json.Marshaler.
//
// See also [SplitInfo.UnmarshalJSON].
func (s *SplitInfo) MarshalJSON() ([]byte, error) {
return (*object.SplitInfo)(s).MarshalJSON()
}
// UnmarshalJSON implements json.Unmarshaler.
//
// See also [SplitInfo.MarshalJSON].
func (s *SplitInfo) UnmarshalJSON(data []byte) error {
err := (*object.SplitInfo)(s).UnmarshalJSON(data)
if err != nil {
return err
}
return formatCheckSI((*object.SplitInfo)(s))
}
var errSplitInfoMissingFields = errors.New("neither link object ID nor last part object ID is set")
func formatCheckSI(v2 *object.SplitInfo) error {
link := v2.GetLink()
lastPart := v2.GetLastPart()
if link == nil && lastPart == nil {
return errSplitInfoMissingFields
}
var oID oid.ID
if link != nil {
err := oID.ReadFromV2(*link)
if err != nil {
return fmt.Errorf("could not convert link object ID: %w", err)
}
}
if lastPart != nil {
err := oID.ReadFromV2(*lastPart)
if err != nil {
return fmt.Errorf("could not convert last part object ID: %w", err)
}
}
return nil
}