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

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package blobstor
import (
"io/ioutil"
"os"
"path"
objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
"github.com/nspcc-dev/neofs-node/pkg/core/object"
"github.com/pkg/errors"
)
// PutPrm groups the parameters of Put operation.
type PutPrm struct {
rwObject
}
// PutRes groups resulting values of Put operation.
type PutRes struct {
roBlobovniczaID
}
// Put saves the object in BLOB storage.
//
// If object is "big", BlobStor saves the object in shallow dir.
// Otherwise, BlobStor saves the object in blobonicza. In this
// case the identifier of blobovnicza is returned.
//
// Returns any error encountered that
// did not allow to completely save the object.
func (b *BlobStor) Put(prm *PutPrm) (*PutRes, error) {
// marshal object
data, err := prm.obj.Marshal()
if err != nil {
return nil, errors.Wrap(err, "could not marshal the object")
}
// compress object data
data = b.compressor(data)
if b.isBig(prm.obj) {
// save object in shallow dir
return nil, b.fsTree.put(prm.obj.Address(), data)
} else {
// save object in blobovnicza
// FIXME: use Blobovnicza when it becomes implemented.
// Temporary save in shallow dir.
return nil, b.fsTree.put(prm.obj.Address(), data)
}
}
func (t *fsTree) put(addr *objectSDK.Address, data []byte) error {
p := t.treePath(addr)
if err := os.MkdirAll(path.Dir(p), t.Permissions); err != nil {
return err
}
return ioutil.WriteFile(p, data, t.Permissions)
}
// checks if object is "big".
func (b *BlobStor) isBig(obj *object.Object) bool {
// FIXME: headers are temporary ignored
// due to slight impact in size.
// In fact, we have to honestly calculate the size
// in binary format, which requires Size() method.
sz := obj.PayloadSize()
return sz > b.smallSizeLimit
}