frostfs-node/pkg/morph/event/balance/lock.go

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package balance
import (
"fmt"
"github.com/nspcc-dev/neo-go/pkg/rpc/response/result/subscriptions"
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"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neofs-node/pkg/morph/client"
"github.com/nspcc-dev/neofs-node/pkg/morph/event"
)
// Lock structure of balance.Lock notification from morph chain.
type Lock struct {
id []byte
user util.Uint160
lock util.Uint160
amount int64 // Fixed16
until int64
// txHash is used in notary environmental
// for calculating unique but same for
// all notification receivers values.
txHash util.Uint256
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}
// MorphEvent implements Neo:Morph Event interface.
func (Lock) MorphEvent() {}
// ID is a withdraw transaction hash.
func (l Lock) ID() []byte { return l.id }
// User returns withdraw receiver script hash from main net.
func (l Lock) User() util.Uint160 { return l.user }
// LockAccount return script hash for balance contract wallet.
func (l Lock) LockAccount() util.Uint160 { return l.lock }
// Amount of the locked assets.
func (l Lock) Amount() int64 { return l.amount }
// Until is an epoch before locked account exists.
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func (l Lock) Until() int64 { return l.until }
// TxHash returns hash of the TX with lock
// notification.
func (l Lock) TxHash() util.Uint256 { return l.txHash }
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// ParseLock from notification into lock structure.
func ParseLock(e *subscriptions.NotificationEvent) (event.Event, error) {
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var (
ev Lock
err error
)
params, err := event.ParseStackArray(e)
if err != nil {
return nil, fmt.Errorf("could not parse stack items from notify event: %w", err)
}
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if ln := len(params); ln != 5 {
return nil, event.WrongNumberOfParameters(5, ln)
}
// parse id
ev.id, err = client.BytesFromStackItem(params[0])
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if err != nil {
return nil, fmt.Errorf("could not get lock id: %w", err)
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}
// parse user
user, err := client.BytesFromStackItem(params[1])
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if err != nil {
return nil, fmt.Errorf("could not get lock user value: %w", err)
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}
ev.user, err = util.Uint160DecodeBytesBE(user)
if err != nil {
return nil, fmt.Errorf("could not convert lock user value to uint160: %w", err)
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}
// parse lock account
lock, err := client.BytesFromStackItem(params[2])
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if err != nil {
return nil, fmt.Errorf("could not get lock account value: %w", err)
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}
ev.lock, err = util.Uint160DecodeBytesBE(lock)
if err != nil {
return nil, fmt.Errorf("could not convert lock account value to uint160: %w", err)
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}
// parse amount
ev.amount, err = client.IntFromStackItem(params[3])
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if err != nil {
return nil, fmt.Errorf("could not get lock amount: %w", err)
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}
// parse until deadline
ev.until, err = client.IntFromStackItem(params[4])
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if err != nil {
return nil, fmt.Errorf("could not get lock deadline: %w", err)
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}
ev.txHash = e.Container
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return ev, nil
}