frostfs-node/pkg/morph/event/reputation/put.go
Evgenii Stratonikov 71b87155ef [] *: use stdlib errors package
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
2021-05-19 16:42:54 +03:00

85 lines
1.9 KiB
Go

package reputation
import (
"fmt"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
"github.com/nspcc-dev/neofs-api-go/pkg/reputation"
"github.com/nspcc-dev/neofs-node/pkg/morph/client"
"github.com/nspcc-dev/neofs-node/pkg/morph/event"
)
// Put structure of reputation.reputationPut notification from
// morph chain.
type Put struct {
epoch uint64
peerID reputation.PeerID
value reputation.GlobalTrust
}
const peerIDLength = 33 // compressed public key
// MorphEvent implements Neo:Morph Event interface.
func (Put) MorphEvent() {}
// Epoch returns epoch value of reputation data.
func (p Put) Epoch() uint64 {
return p.epoch
}
// PeerID returns peer id of reputation data.
func (p Put) PeerID() reputation.PeerID {
return p.peerID
}
// Value returns reputation structure.
func (p Put) Value() reputation.GlobalTrust {
return p.value
}
// ParsePut from notification into reputation event structure.
func ParsePut(prms []stackitem.Item) (event.Event, error) {
var (
ev Put
err error
)
if ln := len(prms); ln != 3 {
return nil, event.WrongNumberOfParameters(3, ln)
}
// parse epoch number
epoch, err := client.IntFromStackItem(prms[0])
if err != nil {
return nil, fmt.Errorf("could not get integer epoch number: %w", err)
}
ev.epoch = uint64(epoch)
// parse peer ID value
peerID, err := client.BytesFromStackItem(prms[1])
if err != nil {
return nil, fmt.Errorf("could not get peer ID value: %w", err)
}
if ln := len(peerID); ln != peerIDLength {
return nil, fmt.Errorf("peer ID is %d byte long, expected %d", ln, peerIDLength)
}
var publicKey [33]byte
copy(publicKey[:], peerID)
ev.peerID.SetPublicKey(publicKey)
// parse global trust value
rawValue, err := client.BytesFromStackItem(prms[2])
if err != nil {
return nil, fmt.Errorf("could not get global trust value: %w", err)
}
err = ev.value.Unmarshal(rawValue)
if err != nil {
return nil, fmt.Errorf("could not parse global trust value: %w", err)
}
return ev, nil
}