frostfs-node/pkg/morph/event/neofs/withdraw.go
Evgenii Stratonikov 71b87155ef [#521] *: use stdlib errors package
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
2021-05-19 16:42:54 +03:00

63 lines
1.6 KiB
Go

package neofs
import (
"fmt"
"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"
)
// Withdraw structure of neofs.Withdraw notification from mainnet chain.
type Withdraw struct {
id []byte
amount int64 // Fixed8
user util.Uint160
}
// MorphEvent implements Neo:Morph Event interface.
func (Withdraw) MorphEvent() {}
// ID is a withdraw transaction hash.
func (w Withdraw) ID() []byte { return w.id }
// User returns withdraw receiver script hash from main net.
func (w Withdraw) User() util.Uint160 { return w.user }
// Amount of the withdraw assets.
func (w Withdraw) Amount() int64 { return w.amount }
// ParseWithdraw notification into withdraw structure.
func ParseWithdraw(params []stackitem.Item) (event.Event, error) {
var ev Withdraw
if ln := len(params); ln != 3 {
return nil, event.WrongNumberOfParameters(3, ln)
}
// parse user
user, err := client.BytesFromStackItem(params[0])
if err != nil {
return nil, fmt.Errorf("could not get withdraw user: %w", err)
}
ev.user, err = util.Uint160DecodeBytesBE(user)
if err != nil {
return nil, fmt.Errorf("could not convert withdraw user to uint160: %w", err)
}
// parse amount
ev.amount, err = client.IntFromStackItem(params[1])
if err != nil {
return nil, fmt.Errorf("could not get withdraw amount: %w", err)
}
// parse id
ev.id, err = client.BytesFromStackItem(params[2])
if err != nil {
return nil, fmt.Errorf("could not get withdraw id: %w", err)
}
return ev, nil
}