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

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package frostfs
import (
"fmt"
"github.com/TrueCloudLab/frostfs-node/pkg/morph/client"
"github.com/TrueCloudLab/frostfs-node/pkg/morph/event"
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/util"
)
type Config struct {
key []byte
value []byte
id []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 (u Config) TxHash() util.Uint256 {
return u.txHash
}
// MorphEvent implements Neo:Morph Event interface.
func (Config) MorphEvent() {}
func (u Config) ID() []byte { return u.id }
func (u Config) Key() []byte { return u.key }
func (u Config) Value() []byte { return u.value }
func ParseConfig(e *state.ContainedNotificationEvent) (event.Event, error) {
var (
ev Config
err error
)
params, err := event.ParseStackArray(e)
if err != nil {
return nil, fmt.Errorf("could not parse stack items from notify event: %w", err)
}
if ln := len(params); ln != 3 {
return nil, event.WrongNumberOfParameters(3, ln)
}
// parse id
ev.id, err = client.BytesFromStackItem(params[0])
if err != nil {
return nil, fmt.Errorf("could not get config update id: %w", err)
}
// parse key
ev.key, err = client.BytesFromStackItem(params[1])
if err != nil {
return nil, fmt.Errorf("could not get config key: %w", err)
}
// parse value
ev.value, err = client.BytesFromStackItem(params[2])
if err != nil {
return nil, fmt.Errorf("could not get config value: %w", err)
}
ev.txHash = e.Container
return ev, nil
}