frostfs-node/pkg/local_object_storage/blobstor/get.go

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package blobstor
import (
"errors"
"fmt"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/blobovniczatree"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/fstree"
apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
objectSDK "github.com/nspcc-dev/neofs-sdk-go/object"
)
// GetBigPrm groups the parameters of GetBig operation.
type GetBigPrm struct {
address
}
// GetBigRes groups the resulting values of GetBig operation.
type GetBigRes struct {
roObject
}
// GetBig reads the object from shallow dir of BLOB storage by address.
//
// Returns any error encountered that
// did not allow to completely read the object.
//
// Returns an error of type apistatus.ObjectNotFound if the requested object is not
// presented in shallow dir.
func (b *BlobStor) GetBig(prm GetBigPrm) (GetBigRes, error) {
// get compressed object data
data, err := b.fsTree.Get(prm.addr)
if err != nil {
if errors.Is(err, fstree.ErrFileNotFound) {
var errNotFound apistatus.ObjectNotFound
return GetBigRes{}, errNotFound
}
return GetBigRes{}, fmt.Errorf("could not read object from fs tree: %w", err)
}
data, err = b.Decompress(data)
if err != nil {
return GetBigRes{}, fmt.Errorf("could not decompress object data: %w", err)
}
// unmarshal the object
obj := objectSDK.New()
if err := obj.Unmarshal(data); err != nil {
return GetBigRes{}, fmt.Errorf("could not unmarshal the object: %w", err)
}
return GetBigRes{
roObject: roObject{
obj: obj,
},
}, nil
}
func (b *BlobStor) GetSmall(prm blobovniczatree.GetSmallPrm) (blobovniczatree.GetSmallRes, error) {
return b.blobovniczas.Get(prm)
}