/
ante.go
58 lines (50 loc) · 2.28 KB
/
ante.go
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package ante
import (
sdk "github.com/Finschia/finschia-sdk/types"
sdkerrors "github.com/Finschia/finschia-sdk/types/errors"
"github.com/Finschia/finschia-sdk/types/tx/signing"
authsigning "github.com/Finschia/finschia-sdk/x/auth/signing"
"github.com/Finschia/finschia-sdk/x/auth/types"
)
// HandlerOptions are the options required for constructing a default SDK AnteHandler.
type HandlerOptions struct {
AccountKeeper AccountKeeper
BankKeeper types.BankKeeper
FeegrantKeeper FeegrantKeeper
SignModeHandler authsigning.SignModeHandler
SigGasConsumer func(meter sdk.GasMeter, sig signing.SignatureV2, params types.Params) error
}
// NewAnteHandler returns an AnteHandler that checks and increments sequence
// numbers, checks signatures & account numbers, and deducts fees from the first
// signer.
func NewAnteHandler(options HandlerOptions) (sdk.AnteHandler, error) {
if options.AccountKeeper == nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "account keeper is required for ante builder")
}
if options.BankKeeper == nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "bank keeper is required for ante builder")
}
if options.SignModeHandler == nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "sign mode handler is required for ante builder")
}
sigGasConsumer := options.SigGasConsumer
if sigGasConsumer == nil {
sigGasConsumer = DefaultSigVerificationGasConsumer
}
anteDecorators := []sdk.AnteDecorator{
NewSetUpContextDecorator(), // outermost AnteDecorator. SetUpContext must be called first
NewRejectExtensionOptionsDecorator(),
NewMempoolFeeDecorator(),
NewValidateBasicDecorator(),
NewTxTimeoutHeightDecorator(),
NewValidateMemoDecorator(options.AccountKeeper),
NewConsumeGasForTxSizeDecorator(options.AccountKeeper),
NewDeductFeeDecorator(options.AccountKeeper, options.BankKeeper, options.FeegrantKeeper),
NewSetPubKeyDecorator(options.AccountKeeper), // SetPubKeyDecorator must be called before all signature verification decorators
NewValidateSigCountDecorator(options.AccountKeeper),
NewSigGasConsumeDecorator(options.AccountKeeper, sigGasConsumer),
NewSigVerificationDecorator(options.AccountKeeper, options.SignModeHandler),
NewIncrementSequenceDecorator(options.AccountKeeper),
}
return sdk.ChainAnteDecorators(anteDecorators...), nil
}