frostfs-node/pkg/local_object_storage/shard/put.go

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package shard
import (
"fmt"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor"
meta "github.com/nspcc-dev/neofs-node/pkg/local_object_storage/metabase"
"github.com/nspcc-dev/neofs-sdk-go/object"
"go.uber.org/zap"
)
// PutPrm groups the parameters of Put operation.
type PutPrm struct {
obj *object.Object
}
// PutRes groups the resulting values of Put operation.
type PutRes struct{}
// WithObject is a Put option to set object to save.
func (p *PutPrm) WithObject(obj *object.Object) {
if p != nil {
p.obj = obj
}
}
// Put saves the object in shard.
//
// Returns any error encountered that
// did not allow to completely save the object.
//
// Returns ErrReadOnlyMode error if shard is in "read-only" mode.
func (s *Shard) Put(prm PutPrm) (*PutRes, error) {
if s.GetMode() != ModeReadWrite {
return nil, ErrReadOnlyMode
}
putPrm := new(blobstor.PutPrm) // form Put parameters
putPrm.SetObject(prm.obj)
// exist check are not performed there, these checks should be executed
// ahead of `Put` by storage engine
if s.hasWriteCache() {
err := s.writeCache.Put(prm.obj)
if err == nil {
return nil, nil
}
s.log.Debug("can't put message to writeCache, trying to blobStor",
zap.String("err", err.Error()))
}
var (
err error
res *blobstor.PutRes
)
// res == nil if there is no writeCache or writeCache.Put has been failed
if res, err = s.blobStor.Put(putPrm); err != nil {
return nil, fmt.Errorf("could not put object to BLOB storage: %w", err)
}
// put to metabase
if err := meta.Put(s.metaBase, prm.obj, res.BlobovniczaID()); err != nil {
// may we need to handle this case in a special way
// since the object has been successfully written to BlobStor
return nil, fmt.Errorf("could not put object to metabase: %w", err)
}
return nil, nil
}