ante

Documentation

Overview

Package ante defines the SDK auth module's AnteHandler as well as an internal AnteHandler for an Ethereum transaction (i.e MsgEthereumTx).

During CheckTx, the transaction is passed through a series of pre-message execution validation checks such as signature and account verification in addition to minimum fees being checked. Otherwise, during DeliverTx, the transaction is simply passed to the EVM which will also perform the same series of checks. The distinction is made in CheckTx to prevent spam and DoS attacks.

Index

• func NewAnteHandler(options HandlerOptions) (sdk.AnteHandler, error)
• type EvmKeeper
• type HandlerOptions
  • func (options HandlerOptions) Validate() error

Functions

func NewAnteHandler

func NewAnteHandler(options HandlerOptions) (sdk.AnteHandler, error)

NewAnteHandler returns an ante handler responsible for attempting to route an Ethereum or SDK transaction to an internal ante handler for performing transaction-level processing (e.g. fee payment, signature verification) before being passed onto it's respective handler.

Types

type EvmKeeper

type EvmKeeper interface {
	GetParams(ctx sdk.Context) (params evmtypes.Params)
	ChainID() *big.Int
	GetBaseFee(ctx sdk.Context, ethCfg *params.ChainConfig) *big.Int
}

EvmKeeper defines the expected keeper interface used on the AnteHandler

type HandlerOptions

type HandlerOptions struct {
	AccountKeeper          evmtypes.AccountKeeper
	BankKeeper             evmtypes.BankKeeper
	IBCKeeper              *ibckeeper.Keeper
	FeeMarketKeeper        ethante.FeeMarketKeeper
	EvmKeeper              ethante.EVMKeeper
	FeegrantKeeper         ante.FeegrantKeeper
	SignModeHandler        *txsigning.HandlerMap
	SigGasConsumer         func(meter storetypes.GasMeter, sig signing.SignatureV2, params authtypes.Params) error
	Cdc                    codec.BinaryCodec
	MaxTxGasWanted         uint64
	Simulation             bool
	ExtensionOptionChecker ante.ExtensionOptionChecker
	TxFeeChecker           ante.TxFeeChecker
	DisabledAuthzMsgs      []string
}

HandlerOptions defines the list of module keepers required to run the canto AnteHandler decorators.

func (HandlerOptions) Validate

func (options HandlerOptions) Validate() error

Validate checks if the keepers are defined