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ante_handler.go
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ante_handler.go
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package app
import (
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/cosmos/cosmos-sdk/x/auth/ante"
channelkeeper "github.com/cosmos/ibc-go/v2/modules/core/04-channel/keeper"
ibcante "github.com/cosmos/ibc-go/v2/modules/core/ante"
)
// HandlerOptions extend the SDK's AnteHandler options by requiring the IBC
// channel keeper.
type HandlerOptions struct {
ante.HandlerOptions
IBCChannelkeeper channelkeeper.Keeper
}
func NewAnteHandler(options HandlerOptions) (sdk.AnteHandler, error) {
if options.AccountKeeper == nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "account keeper is required for AnteHandler")
}
if options.BankKeeper == nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "bank keeper is required for AnteHandler")
}
if options.SignModeHandler == nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "sign mode handler is required for ante builder")
}
var sigGasConsumer = options.SigGasConsumer
if sigGasConsumer == nil {
sigGasConsumer = ante.DefaultSigVerificationGasConsumer
}
anteDecorators := []sdk.AnteDecorator{
ante.NewSetUpContextDecorator(),
ante.NewRejectExtensionOptionsDecorator(),
ante.NewMempoolFeeDecorator(),
ante.NewValidateBasicDecorator(),
ante.NewTxTimeoutHeightDecorator(),
ante.NewValidateMemoDecorator(options.AccountKeeper),
ante.NewConsumeGasForTxSizeDecorator(options.AccountKeeper),
ante.NewDeductFeeDecorator(options.AccountKeeper, options.BankKeeper, options.FeegrantKeeper),
// SetPubKeyDecorator must be called before all signature verification decorators
ante.NewSetPubKeyDecorator(options.AccountKeeper),
ante.NewValidateSigCountDecorator(options.AccountKeeper),
ante.NewSigGasConsumeDecorator(options.AccountKeeper, sigGasConsumer),
ante.NewSigVerificationDecorator(options.AccountKeeper, options.SignModeHandler),
ante.NewIncrementSequenceDecorator(options.AccountKeeper),
ibcante.NewAnteDecorator(options.IBCChannelkeeper),
}
return sdk.ChainAnteDecorators(anteDecorators...), nil
}