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[#74] neofs: Pay withdraw fee to processing contract

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Processing contracts pays for cheque that transfer
assets back to the user, so user should transfer
some fee to this contract.

Withdraw fee defined in NeoFS global configuration.

Signed-off-by: Alex Vanin <alexey@nspcc.ru>
This commit is contained in:
Alex Vanin 2021-04-20 17:44:36 +03:00 committed by Alex Vanin
parent 4c932ae930
commit 5372329d49
1 changed files with 22 additions and 3 deletions
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25
neofs/neofs_contract.go
View file

@ -53,12 +53,15 @@ type (
const (
candidateFeeConfigKey = "InnerRingCandidateFee"
withdrawFeeConfigKey = "WithdrawFee"
version = 3
alphabetKey = "alphabet"
candidatesKey = "candidates"
processingContractKey = "processingScriptHash"
publicKeySize = 33
maxBalanceAmount = 9000 // Max integer of Fixed12 in JSON bound (2**53-1)
@ -72,7 +75,7 @@ var (
)
// Init set up initial alphabet node keys.
func Init(owner interop.PublicKey, args []interop.PublicKey) bool {
func Init(owner, addrProc interop.Hash160, args []interop.PublicKey) bool {
ctx := storage.GetContext()
if !common.HasUpdateAccess(ctx) {
@ -85,6 +88,10 @@ func Init(owner interop.PublicKey, args []interop.PublicKey) bool {
panic("neofs: at least one alphabet key must be provided")
}
if len(addrProc) != 20 {
panic("neofs: incorrect length of contract script hash")
}
for i := 0; i < len(args); i++ {
pub := args[i]
if len(pub) != publicKeySize {
@ -98,6 +105,7 @@ func Init(owner interop.PublicKey, args []interop.PublicKey) bool {
common.SetSerialized(ctx, candidatesKey, []common.IRNode{})
storage.Put(ctx, common.OwnerKey, owner)
storage.Put(ctx, processingContractKey, addrProc)
runtime.Log("neofs: contract initialized")
@ -246,7 +254,7 @@ func Deposit(from interop.Hash160, amount int, rcv interop.Hash160) bool {
}
// Withdraw initialize gas asset withdraw from NeoFS balance.
func Withdraw(user []byte, amount int) bool {
func Withdraw(user interop.Hash160, amount int) bool {
if !runtime.CheckWitness(user) {
panic("withdraw: you should be the owner of the wallet")
}
@ -259,9 +267,20 @@ func Withdraw(user []byte, amount int) bool {
panic("withdraw: out of max amount limit")
}
amount = amount * 100000000
// transfer fee to proxy contract to pay cheque invocation
ctx := storage.GetContext()
fee := getConfig(ctx, withdrawFeeConfigKey).(int)
processingAddr := storage.Get(ctx, processingContractKey).(interop.Hash160)
transferred := gas.Transfer(user, processingAddr, fee, []byte{})
if !transferred {
panic("withdraw: failed to transfer withdraw fee, aborting")
}
// notify alphabet nodes
amount = amount * 100000000
tx := runtime.GetScriptContainer()
runtime.Notify("Withdraw", user, amount, tx.Hash)
return true