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native: expose MinimumResponseGas, add specific error for it

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This commit is contained in:
Roman Khimov 2021-04-06 22:22:34 +03:00
parent 48313d4f79
commit ed358b4c4c
1 changed files with 8 additions and 1 deletions
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9
pkg/core/native/oracle.go
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@ -61,6 +61,9 @@ const (
// DefaultOracleRequestPrice is default amount GAS needed for oracle request.
DefaultOracleRequestPrice = 5000_0000
// MinimumResponseGas is the minimum response fee permitted for request.
MinimumResponseGas = 10_000_000
)
var (
@ -74,6 +77,7 @@ var (
var (
ErrBigArgument = errors.New("some of the arguments are invalid")
ErrInvalidWitness = errors.New("witness check failed")
ErrLowResponseGas = errors.New("not enough gas for response")
ErrNotEnoughGas = errors.New("gas limit exceeded")
ErrRequestNotFound = errors.New("oracle request not found")
ErrResponseNotFound = errors.New("oracle response not found")
@ -323,9 +327,12 @@ func (o *Oracle) request(ic *interop.Context, args []stackitem.Item) stackitem.I
// RequestInternal processes oracle request.
func (o *Oracle) RequestInternal(ic *interop.Context, url string, filter *string, cb string, userData stackitem.Item, gas *big.Int) error {
if len(url) > maxURLLength || (filter != nil && len(*filter) > maxFilterLength) || len(cb) > maxCallbackLength || gas.Uint64() < 1000_0000 {
if len(url) > maxURLLength || (filter != nil && len(*filter) > maxFilterLength) || len(cb) > maxCallbackLength {
return ErrBigArgument
}
if gas.Uint64() < MinimumResponseGas {
return ErrLowResponseGas
}
if strings.HasPrefix(cb, "_") {
return errors.New("disallowed callback method (starts with '_')")
}