ante_handler.go

package app

import (
	errorsmod "cosmossdk.io/errors"
	wasmkeeper "github.com/CosmWasm/wasmd/x/wasm/keeper"
	wasmtypes "github.com/CosmWasm/wasmd/x/wasm/types"
	globalfeeante "github.com/OmniFlix/omniflixhub/v3/x/globalfee/ante"
	globalfeekeeper "github.com/OmniFlix/omniflixhub/v3/x/globalfee/keeper"
	"github.com/cosmos/cosmos-sdk/codec"
	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"
	govkeeper "github.com/cosmos/cosmos-sdk/x/gov/keeper"
	stakingkeeper "github.com/cosmos/cosmos-sdk/x/staking/keeper"
	ibcante "github.com/cosmos/ibc-go/v7/modules/core/ante"
	ibckeeper "github.com/cosmos/ibc-go/v7/modules/core/keeper"
)

// Lower back to 1 mil after https://github.com/cosmos/relayer/issues/1255
const maxBypassMinFeeMsgGasUsage = 2_000_000

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

	GovKeeper         govkeeper.Keeper
	IBCKeeper         *ibckeeper.Keeper
	TxCounterStoreKey storetypes.StoreKey
	WasmConfig        wasmtypes.WasmConfig
	Codec             codec.BinaryCodec

	BypassMinFeeMsgTypes []string

	GlobalFeeKeeper globalfeekeeper.Keeper
	StakingKeeper   stakingkeeper.Keeper
}

func NewAnteHandler(options HandlerOptions) (sdk.AnteHandler, error) {
	if options.AccountKeeper == nil {
		return nil, errorsmod.Wrap(sdkerrors.ErrLogic, "account keeper is required for AnteHandler")
	}
	if options.BankKeeper == nil {
		return nil, errorsmod.Wrap(sdkerrors.ErrLogic, "bank keeper is required for AnteHandler")
	}
	if options.SignModeHandler == nil {
		return nil, errorsmod.Wrap(sdkerrors.ErrLogic, "sign mode handler is required for ante builder")
	}

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

	anteDecorators := []sdk.AnteDecorator{
		ante.NewSetUpContextDecorator(), // Outermost AnteDecorator, SetUpContext must be called first
		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),
		globalfeeante.NewFeeDecorator(
			options.BypassMinFeeMsgTypes,
			options.GlobalFeeKeeper,
			options.StakingKeeper,
			maxBypassMinFeeMsgGasUsage,
		),
		ante.NewDeductFeeDecorator(
			options.AccountKeeper,
			options.BankKeeper,
			options.FeegrantKeeper,
			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),
	}

	return sdk.ChainAnteDecorators(anteDecorators...), nil
}