ante.go

package app

import (
	"cosmossdk.io/errors"
	storetypes "github.com/cosmos/cosmos-sdk/store/types"
	sdk "github.com/cosmos/cosmos-sdk/types"
	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
	"github.com/cosmos/cosmos-sdk/x/auth/ante"
	ibcante "github.com/cosmos/ibc-go/v7/modules/core/ante"
	ibckeeper "github.com/cosmos/ibc-go/v7/modules/core/keeper"

	subspaceante "github.com/desmos-labs/desmos/v7/x/subspaces/ante"
	subspaceskeeper "github.com/desmos-labs/desmos/v7/x/subspaces/keeper"

	wasmkeeper "github.com/CosmWasm/wasmd/x/wasm/keeper"
	wasmTypes "github.com/CosmWasm/wasmd/x/wasm/types"
)

// HandlerOptions extend the SDK's AnteHandler options by requiring the IBC
// channel keeper.
type HandlerOptions struct {
	ante.HandlerOptions

	IBCkeeper         *ibckeeper.Keeper
	SubspacesKeeper   subspaceskeeper.Keeper
	TxCounterStoreKey storetypes.StoreKey
	WasmConfig        *wasmTypes.WasmConfig
}

func NewAnteHandler(options HandlerOptions) (sdk.AnteHandler, error) {
	if options.AccountKeeper == nil {
		return nil, errors.Wrap(sdkerrors.ErrLogic, "account keeper is required for AnteHandler")
	}
	if options.BankKeeper == nil {
		return nil, errors.Wrap(sdkerrors.ErrLogic, "bank keeper is required for AnteHandler")
	}
	if options.SignModeHandler == nil {
		return nil, errors.Wrap(sdkerrors.ErrLogic, "sign mode handler is required for ante builder")
	}
	if options.WasmConfig == nil {
		return nil, errors.Wrap(sdkerrors.ErrLogic, "wasm config is required for ante builder")
	}
	if options.TxCounterStoreKey == nil {
		return nil, errors.Wrap(sdkerrors.ErrLogic, "tx counter key is required for ante builder")
	}

	var sigGasConsumer = options.SigGasConsumer
	if sigGasConsumer == nil {
		sigGasConsumer = ante.DefaultSigVerificationGasConsumer
	}

	return sdk.ChainAnteDecorators(
		ante.NewSetUpContextDecorator(),
		wasmkeeper.NewLimitSimulationGasDecorator(options.WasmConfig.SimulationGasLimit),
		wasmkeeper.NewCountTXDecorator(options.TxCounterStoreKey),
		ante.NewExtensionOptionsDecorator(options.ExtensionOptionChecker),
		ante.NewValidateBasicDecorator(),
		ante.NewTxTimeoutHeightDecorator(),
		ante.NewValidateMemoDecorator(options.AccountKeeper),
		ante.NewConsumeGasForTxSizeDecorator(options.AccountKeeper),
		subspaceante.NewDeductFeeDecorator(
			ante.NewDeductFeeDecorator(options.AccountKeeper, options.BankKeeper, options.FeegrantKeeper, options.TxFeeChecker), options.AccountKeeper, options.BankKeeper, options.SubspacesKeeper, options.TxFeeChecker),
		// 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.NewRedundantRelayDecorator(options.IBCkeeper),
	), nil
}