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

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package frostfs
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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"
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"github.com/nspcc-dev/neo-go/pkg/util"
)
// Cheque structure of frostfs.Cheque notification from mainnet chain.
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type Cheque struct {
id []byte
amount int64 // Fixed8
user util.Uint160
lock util.Uint160
}
// MorphEvent implements Neo:Morph Event interface.
func (Cheque) MorphEvent() {}
// ID is a withdraw transaction hash.
func (c Cheque) ID() []byte { return c.id }
// User returns withdraw receiver script hash from main net.
func (c Cheque) User() util.Uint160 { return c.user }
// Amount of the sent assets.
func (c Cheque) Amount() int64 { return c.amount }
// LockAccount return script hash for balance contract wallet.
func (c Cheque) LockAccount() util.Uint160 { return c.lock }
// ParseCheque from notification into cheque structure.
func ParseCheque(e *state.ContainedNotificationEvent) (event.Event, error) {
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var (
ev Cheque
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 != 4 {
return nil, event.WrongNumberOfParameters(4, ln)
}
// parse id
ev.id, err = client.BytesFromStackItem(params[0])
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if err != nil {
return nil, fmt.Errorf("could not get cheque 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 cheque user: %w", err)
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}
ev.user, err = util.Uint160DecodeBytesBE(user)
if err != nil {
return nil, fmt.Errorf("could not convert cheque user to uint160: %w", err)
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}
// parse amount
ev.amount, err = client.IntFromStackItem(params[2])
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if err != nil {
return nil, fmt.Errorf("could not get cheque amount: %w", err)
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}
// parse lock account
lock, err := client.BytesFromStackItem(params[3])
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if err != nil {
return nil, fmt.Errorf("could not get cheque lock account: %w", err)
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}
ev.lock, err = util.Uint160DecodeBytesBE(lock)
if err != nil {
return nil, fmt.Errorf("could not convert cheque lock account to uint160: %w", err)
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}
return ev, nil
}