feat: enable convert in Encode

ante/ante.go

@@ -0,0 +1,54 @@
+package ante
+
+import (
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
+	"github.com/cosmos/cosmos-sdk/types/tx/signing"
+	authsigning "github.com/cosmos/cosmos-sdk/x/auth/signing"
+	"github.com/cosmos/cosmos-sdk/x/auth/types"
+)
+
+// HandlerOptions are the options required for constructing a default SDK AnteHandler.
+type HandlerOptions struct {
+	AccountKeeper          AccountKeeper
+	BankKeeper             types.BankKeeper
+	ExtensionOptionChecker ExtensionOptionChecker
+	FeegrantKeeper         FeegrantKeeper
+	SignModeHandler        authsigning.SignModeHandler
+	SigGasConsumer         func(meter sdk.GasMeter, sig signing.SignatureV2, params types.Params) error
+	TxFeeChecker           TxFeeChecker
+}
+
+// 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")
+	}
+
+	anteDecorators := []sdk.AnteDecorator{
+		NewSetUpContextDecorator(), // outermost AnteDecorator. SetUpContext must be called first
+		NewExtensionOptionsDecorator(options.ExtensionOptionChecker),
+		NewValidateBasicDecorator(),
+		NewTxTimeoutHeightDecorator(),
+		NewValidateMemoDecorator(options.AccountKeeper),
+		NewConsumeGasForTxSizeDecorator(options.AccountKeeper),
+		NewDeductFeeDecorator(options.AccountKeeper, options.BankKeeper, options.FeegrantKeeper, options.TxFeeChecker),
+		NewSetPubKeyDecorator(options.AccountKeeper), // SetPubKeyDecorator must be called before all signature verification decorators
+		NewValidateSigCountDecorator(options.AccountKeeper),
+		NewSigGasConsumeDecorator(options.AccountKeeper, options.SigGasConsumer),
+		NewSigVerificationDecorator(options.AccountKeeper, options.SignModeHandler),
+		NewIncrementSequenceDecorator(options.AccountKeeper),
+	}
+
+	return sdk.ChainAnteDecorators(anteDecorators...), nil
+}