frostfs-node/pkg/innerring/invoke/neofs.go
Alex Vanin 6520d00ff0 [#14] Adopt stackitems in inner ring
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
2020-10-02 11:25:35 +03:00

68 lines
1.7 KiB
Go

package invoke
import (
"crypto/ecdsa"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neofs-crypto"
"github.com/nspcc-dev/neofs-node/pkg/morph/client"
)
type (
// ChequeParams for CashOutCheque invocation.
ChequeParams struct {
ID []byte
Amount int64 // Fixed8
User util.Uint160
LockAccount util.Uint160
}
)
const (
// Extra SysFee for contract invocations. Contracts execute inner ring
// invocations in two steps: collection and execution. At collection
// step contract waits for (2\3*n + 1) invocations, and then in execution
// stage contract actually makes changes in the contract storage. SysFee
// for invocation calculated based on testinvoke which happens at collection
// stage. Therefore client has to provide some extra SysFee to operate at
// execution stage. Otherwise invocation will fail due to gas limit.
extraFee = 5000_0000 // 0.5 Fixed8 gas
checkIsInnerRingMethod = "IsInnerRing"
chequeMethod = "Cheque"
)
// IsInnerRing returns true if 'key' is presented in inner ring list.
func IsInnerRing(cli *client.Client, con util.Uint160, key *ecdsa.PublicKey) (bool, error) {
if cli == nil {
return false, client.ErrNilClient
}
pubKey := crypto.MarshalPublicKey(key)
val, err := cli.TestInvoke(con, checkIsInnerRingMethod, pubKey)
if err != nil {
return false, err
}
isInnerRing, err := client.BoolFromStackItem(val[0])
if err != nil {
return false, err
}
return isInnerRing, nil
}
// CashOutCheque invokes Cheque method.
func CashOutCheque(cli *client.Client, con util.Uint160, p *ChequeParams) error {
if cli == nil {
return client.ErrNilClient
}
return cli.Invoke(con, extraFee, chequeMethod,
p.ID,
p.User.BytesBE(),
p.Amount,
p.LockAccount.BytesBE(),
)
}