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

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package frostfs
import (
"fmt"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/client"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/event"
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
)
type Bind struct {
BindCommon
}
type BindCommon struct {
UserValue []byte
KeysValue [][]byte
// TxHashValue is used in notary environmental
// for calculating unique but same for
// all notification receivers values.
TxHashValue util.Uint256
}
// TxHash returns hash of the TX with new epoch
// notification.
func (b BindCommon) TxHash() util.Uint256 {
return b.TxHashValue
}
// MorphEvent implements Neo:Morph Event interface.
func (BindCommon) MorphEvent() {}
func (b BindCommon) Keys() [][]byte { return b.KeysValue }
func (b BindCommon) User() []byte { return b.UserValue }
func ParseBind(e *state.ContainedNotificationEvent) (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.TxHashValue = 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.UserValue, 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.KeysValue = 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.KeysValue = append(dst.KeysValue, rawKey)
}
return nil
}