frostfs-node/pkg/local_object_storage/blobovnicza/put.go
Leonard Lyubich eaae5a5dd7 [] blobovnicza: Store objects in a binary format
In previous implementation Blobovnicza's stored objects in protocol format
which did not allow working with externally compressed objects. To achieve
this goal, operations Get and Put no longer work with the structure of the
object, but only with abstract binary data. Operation GetRange has become
incorrect in its original purpose to receive the payload range. In this
regard, BlobStor receives the payload range of the object through Get
operation. In the future either Blobovnicza will learn to compress objects
by itself, or the GetRange operation will be eliminated.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
2020-12-11 17:19:37 +03:00

87 lines
2 KiB
Go

package blobovnicza
import (
objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
"github.com/pkg/errors"
"go.etcd.io/bbolt"
)
// PutPrm groups the parameters of Put operation.
type PutPrm struct {
addr *objectSDK.Address
objData []byte
}
// PutRes groups resulting values of Put operation.
type PutRes struct {
}
// ErrFull is returned returned when trying to save an
// object to a filled blobovnicza.
var ErrFull = errors.New("blobovnicza is full")
var errNilAddress = errors.New("object address is nil")
// SetAddress sets address of saving object.
func (p *PutPrm) SetAddress(addr *objectSDK.Address) {
p.addr = addr
}
// SetMarshaledObject sets binary representation of the object.
func (p *PutPrm) SetMarshaledObject(data []byte) {
p.objData = data
}
// Put saves object in Blobovnicza.
//
// If binary representation of the object is not set,
// it is calculated via Marshal method.
//
// The size of the object MUST BE less that or equal to
// the size specified in WithObjectSizeLimit option.
//
// Returns any error encountered that
// did not allow to completely save the object.
//
// Returns ErrFull if blobovnicza is filled.
func (b *Blobovnicza) Put(prm *PutPrm) (*PutRes, error) {
addr := prm.addr
if addr == nil {
return nil, errNilAddress
}
err := b.boltDB.Update(func(tx *bbolt.Tx) error {
if b.full() {
return ErrFull
}
// calculate size
sz := uint64(len(prm.objData))
// get bucket for size
buck := tx.Bucket(bucketForSize(sz))
if buck == nil {
// expected to happen:
// - before initialization step (incorrect usage by design)
// - if DB is corrupted (in future this case should be handled)
return errors.Errorf("(%T) bucket for size %d not created", b, sz)
}
// save the object in bucket
if err := buck.Put(addressKey(addr), prm.objData); err != nil {
return errors.Wrapf(err, "(%T) could not save object in bucket", b)
}
// increase fullness counter
b.incSize(sz)
return nil
})
return nil, err
}
func addressKey(addr *objectSDK.Address) []byte {
return []byte(addr.String())
}