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

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package blobstor
import (
"errors"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/common"
apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
)
// Get reads the object from b.
// If the descriptor is present, only one sub-storage is tried,
// Otherwise, each sub-storage is tried in order.
func (b *BlobStor) Get(prm common.GetPrm) (common.GetRes, error) {
if prm.StorageID == nil {
for i := range b.storage {
res, err := b.storage[i].Storage.Get(prm)
if err == nil || !errors.As(err, new(apistatus.ObjectNotFound)) {
return res, err
}
}
var errNotFound apistatus.ObjectNotFound
return common.GetRes{}, errNotFound
}
if len(prm.StorageID) == 0 {
return b.storage[len(b.storage)-1].Storage.Get(prm)
}
return b.storage[0].Storage.Get(prm)
}