frostfs-node/pkg/morph/event/neofs/bind.go

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package neofs
import (
"fmt"
"github.com/nspcc-dev/neo-go/pkg/rpc/response/result/subscriptions"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
"github.com/nspcc-dev/neofs-node/pkg/morph/client"
"github.com/nspcc-dev/neofs-node/pkg/morph/event"
)
type Bind struct {
bindCommon
}
type bindCommon struct {
user []byte
keys [][]byte
// txHash is used in notary environmental
// for calculating unique but same for
// all notification receivers values.
txHash util.Uint256
}
// TxHash returns hash of the TX with new epoch
// notification.
func (b bindCommon) TxHash() util.Uint256 {
return b.txHash
}
// MorphEvent implements Neo:Morph Event interface.
func (bindCommon) MorphEvent() {}
func (b bindCommon) Keys() [][]byte { return b.keys }
func (b bindCommon) User() []byte { return b.user }
func ParseBind(e *subscriptions.NotificationEvent) (event.Event, error) {
var (
ev Bind
err error
)
params, err := event.ParseStackArray(e)
if err != nil {
return nil, fmt.Errorf("could not parse stack items from notify event: %w", err)
}
err = parseBind(&ev.bindCommon, params)
if err != nil {
return nil, err
}
ev.txHash = e.Container
return ev, nil
}
func parseBind(dst *bindCommon, params []stackitem.Item) error {
if ln := len(params); ln != 2 {
return event.WrongNumberOfParameters(2, ln)
}
var err error
// parse user
dst.user, err = client.BytesFromStackItem(params[0])
if err != nil {
return fmt.Errorf("could not get bind user: %w", err)
}
// parse keys
bindKeys, err := client.ArrayFromStackItem(params[1])
if err != nil {
return fmt.Errorf("could not get bind keys: %w", err)
}
dst.keys = make([][]byte, 0, len(bindKeys))
for i := range bindKeys {
rawKey, err := client.BytesFromStackItem(bindKeys[i])
if err != nil {
return fmt.Errorf("could not get bind public key: %w", err)
}
dst.keys = append(dst.keys, rawKey)
}
return nil
}