frostfs-node/pkg/local_object_storage/blobovnicza/put.go
Pavel Karpy 010253a97a [] blobovnicza: Do not use pointers as the results
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
2022-06-06 18:03:12 +03:00

88 lines
2 KiB
Go

package blobovnicza
import (
"errors"
"fmt"
oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
"go.etcd.io/bbolt"
)
// PutPrm groups the parameters of Put operation.
type PutPrm struct {
addr oid.Address
objData []byte
}
// PutRes groups the resulting values of Put operation.
type PutRes struct {
}
// ErrFull is returned when trying to save an
// object to a filled blobovnicza.
var ErrFull = errors.New("blobovnicza is full")
// SetAddress sets the address of the saving object.
func (p *PutPrm) SetAddress(addr oid.Address) {
p.addr = addr
}
// SetMarshaledObject sets binary representation of the object.
func (p *PutPrm) SetMarshaledObject(data []byte) {
p.objData = data
}
// Put saves an 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.
//
// Should not be called in read-only configuration.
func (b *Blobovnicza) Put(prm PutPrm) (PutRes, error) {
sz := uint64(len(prm.objData))
bucketName := bucketForSize(sz)
key := addressKey(prm.addr)
err := b.boltDB.Batch(func(tx *bbolt.Tx) error {
if b.full() {
return ErrFull
}
buck := tx.Bucket(bucketName)
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 fmt.Errorf("(%T) bucket for size %d not created", b, sz)
}
// save the object in bucket
if err := buck.Put(key, prm.objData); err != nil {
return fmt.Errorf("(%T) could not save object in bucket: %w", b, err)
}
return nil
})
if err == nil {
b.incSize(sz)
}
return PutRes{}, err
}
func addressKey(addr oid.Address) []byte {
return []byte(addr.EncodeToString())
}
func addressFromKey(dst *oid.Address, data []byte) error {
return dst.DecodeString(string(data))
}