frostfs-node/pkg/services/object/head/relation.go

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package headsvc
import (
"context"
objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
"github.com/nspcc-dev/neofs-node/pkg/core/object"
"github.com/pkg/errors"
)
type RelationHeader struct {
srch RelationSearcher
svc *Service
}
func NewRelationHeader(srch RelationSearcher, svc *Service) *RelationHeader {
return &RelationHeader{
srch: srch,
svc: svc,
}
}
func (h *RelationHeader) HeadRelation(ctx context.Context, addr *objectSDK.Address) (*object.Object, error) {
id, err := h.srch.SearchRelation(ctx, addr)
if err != nil {
return nil, errors.Wrapf(err, "(%T) could not find relation", h)
}
a := objectSDK.NewAddress()
a.SetContainerID(addr.GetContainerID())
a.SetObjectID(id)
r, err := h.svc.Head(ctx, new(Prm).WithAddress(a))
if err != nil {
return nil, errors.Wrapf(err, "(%T) could not receive relation header", h)
}
return r.Header(), nil
}