refactor: optimize AnteHandler gas consumption (evmos#1388)

* refactor: antehandler order and params optimization

* removed additional individual params for the feemarket module

* typo fix

* Apply suggestions from code review - Fede

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* typo fix

* formatted using gofumpt

* typo fix - missed negate operator

* missed to negate conditions

* added unit tests for the new param getter methods

* updated changelog

* Apply suggestions from code review

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* moved to improvements

* Converted unit tests into table-driven tests

* added Require().Equal() to test case

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

Author: Vvaradinov

CHANGELOG.md

@@ -52,6 +52,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Improvements
 
+* (ante) [\#1388](https://github.com/evmos/ethermint/pull/1388) Optimize AnteHandler gas consumption
 * (lint) [#1298](https://github.com/evmos/ethermint/pull/1298) 150 character line length limit, `gofumpt`, and linting
 * (feemarket) [\#1165](https://github.com/evmos/ethermint/pull/1165) Add hint in specs about different gas terminology in Cosmos and Ethereum.
 * (cli) [#1226](https://github.com/evmos/ethermint/pull/1226) Add custom app db backend flag.

app/ante/ante_test.go

@@ -344,7 +344,7 @@ func (suite AnteTestSuite) TestAnteHandler() {
 				coinAmount := sdk.NewCoin(evmtypes.DefaultEVMDenom, sdk.NewInt(20))
 				gasAmount := sdk.NewCoins(coinAmount)
 				gas := uint64(200000)
-				//reusing the gasAmount for deposit
+				// reusing the gasAmount for deposit
 				deposit := sdk.NewCoins(coinAmount)
 				txBuilder := suite.CreateTestEIP712SubmitProposal(from, privKey, "ethermint_9000-1", gas, gasAmount, deposit)
 				return txBuilder.GetTx()

app/ante/eth.go

@@ -40,10 +40,8 @@ func NewEthSigVerificationDecorator(ek EVMKeeper) EthSigVerificationDecorator {
 // won't see the error message.
 func (esvd EthSigVerificationDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
 	chainID := esvd.evmKeeper.ChainID()
-
-	params := esvd.evmKeeper.GetParams(ctx)
-
-	ethCfg := params.ChainConfig.EthereumConfig(chainID)
+	chainCfg := esvd.evmKeeper.GetChainConfig(ctx)
+	ethCfg := chainCfg.EthereumConfig(chainID)
 	blockNum := big.NewInt(ctx.BlockHeight())
 	signer := ethtypes.MakeSigner(ethCfg, blockNum)
 
@@ -53,8 +51,9 @@ func (esvd EthSigVerificationDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, s
 			return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid message type %T, expected %T", msg, (*evmtypes.MsgEthereumTx)(nil))
 		}
 
+		allowUnprotectedTxs := esvd.evmKeeper.GetAllowUnprotectedTxs(ctx)
 		ethTx := msgEthTx.AsTransaction()
-		if !params.AllowUnprotectedTxs && !ethTx.Protected() {
+		if !allowUnprotectedTxs && !ethTx.Protected() {
 			return ctx, sdkerrors.Wrapf(
 				sdkerrors.ErrNotSupported,
 				"rejected unprotected Ethereum txs. Please EIP155 sign your transaction to protect it against replay-attacks")
@@ -176,15 +175,13 @@ func NewEthGasConsumeDecorator(
 // - transaction or block gas meter runs out of gas
 // - sets the gas meter limit
 func (egcd EthGasConsumeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error) {
-	params := egcd.evmKeeper.GetParams(ctx)
-
-	ethCfg := params.ChainConfig.EthereumConfig(egcd.evmKeeper.ChainID())
+	chainCfg := egcd.evmKeeper.GetChainConfig(ctx)
+	ethCfg := chainCfg.EthereumConfig(egcd.evmKeeper.ChainID())
 
 	blockHeight := big.NewInt(ctx.BlockHeight())
 	homestead := ethCfg.IsHomestead(blockHeight)
 	istanbul := ethCfg.IsIstanbul(blockHeight)
 	london := ethCfg.IsLondon(blockHeight)
-	evmDenom := params.EvmDenom
 	gasWanted := uint64(0)
 	var events sdk.Events
 
@@ -213,6 +210,7 @@ func (egcd EthGasConsumeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simula
 			gasWanted += txData.GetGas()
 		}
 
+		evmDenom := egcd.evmKeeper.GetEVMDenom(ctx)
 		fees, priority, err := egcd.evmKeeper.DeductTxCostsFromUserBalance(
 			ctx,
 			*msgEthTx,
@@ -436,9 +434,9 @@ func (vbd EthValidateBasicDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simu
 	txFee := sdk.Coins{}
 	txGasLimit := uint64(0)
 
-	params := vbd.evmKeeper.GetParams(ctx)
+	chainCfg := vbd.evmKeeper.GetChainConfig(ctx)
 	chainID := vbd.evmKeeper.ChainID()
-	ethCfg := params.ChainConfig.EthereumConfig(chainID)
+	ethCfg := chainCfg.EthereumConfig(chainID)
 	baseFee := vbd.evmKeeper.GetBaseFee(ctx, ethCfg)
 
 	for _, msg := range protoTx.GetMsgs() {
@@ -460,17 +458,21 @@ func (vbd EthValidateBasicDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simu
 		}
 
 		// return error if contract creation or call are disabled through governance
-		if !params.EnableCreate && txData.GetTo() == nil {
+		enableCreate := vbd.evmKeeper.GetEnableCreate(ctx)
+		enableCall := vbd.evmKeeper.GetEnableCall(ctx)
+
+		if !enableCreate && txData.GetTo() == nil {
 			return ctx, sdkerrors.Wrap(evmtypes.ErrCreateDisabled, "failed to create new contract")
-		} else if !params.EnableCall && txData.GetTo() != nil {
+		} else if !enableCall && txData.GetTo() != nil {
 			return ctx, sdkerrors.Wrap(evmtypes.ErrCallDisabled, "failed to call contract")
 		}
 
 		if baseFee == nil && txData.TxType() == ethtypes.DynamicFeeTxType {
 			return ctx, sdkerrors.Wrap(ethtypes.ErrTxTypeNotSupported, "dynamic fee tx not supported")
 		}
 
-		txFee = txFee.Add(sdk.NewCoin(params.EvmDenom, sdkmath.NewIntFromBigInt(txData.Fee())))
+		evmDenom := vbd.evmKeeper.GetEVMDenom(ctx)
+		txFee = txFee.Add(sdk.NewCoin(evmDenom, sdkmath.NewIntFromBigInt(txData.Fee())))
 	}
 
 	authInfo := protoTx.AuthInfo
@@ -546,8 +548,8 @@ func NewEthMempoolFeeDecorator(ek EVMKeeper) EthMempoolFeeDecorator {
 // It only do the check if london hardfork not enabled or feemarket not enabled, because in that case feemarket will take over the task.
 func (mfd EthMempoolFeeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
 	if ctx.IsCheckTx() && !simulate {
-		params := mfd.evmKeeper.GetParams(ctx)
-		ethCfg := params.ChainConfig.EthereumConfig(mfd.evmKeeper.ChainID())
+		chainCfg := mfd.evmKeeper.GetChainConfig(ctx)
+		ethCfg := chainCfg.EthereumConfig(mfd.evmKeeper.ChainID())
 		baseFee := mfd.evmKeeper.GetBaseFee(ctx, ethCfg)
 		if baseFee == nil {
 			for _, msg := range tx.GetMsgs() {
@@ -556,7 +558,7 @@ func (mfd EthMempoolFeeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulat
 					return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid message type %T, expected %T", msg, (*evmtypes.MsgEthereumTx)(nil))
 				}
 
-				evmDenom := params.EvmDenom
+				evmDenom := mfd.evmKeeper.GetEVMDenom(ctx)
 				feeAmt := ethMsg.GetFee()
 				glDec := sdk.NewDec(int64(ethMsg.GetGas()))
 				requiredFee := ctx.MinGasPrices().AmountOf(evmDenom).Mul(glDec)

app/ante/fee_market.go

@@ -27,8 +27,8 @@ func NewGasWantedDecorator(
 }
 
 func (gwd GasWantedDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
-	params := gwd.evmKeeper.GetParams(ctx)
-	ethCfg := params.ChainConfig.EthereumConfig(gwd.evmKeeper.ChainID())
+	chainCfg := gwd.evmKeeper.GetChainConfig(ctx)
+	ethCfg := chainCfg.EthereumConfig(gwd.evmKeeper.ChainID())
 
 	blockHeight := big.NewInt(ctx.BlockHeight())
 	isLondon := ethCfg.IsLondon(blockHeight)
@@ -39,10 +39,10 @@ func (gwd GasWantedDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bo
 	}
 
 	gasWanted := feeTx.GetGas()
-	feeMktParams := gwd.feeMarketKeeper.GetParams(ctx)
+	isBaseFeeEnabled := gwd.feeMarketKeeper.GetBaseFeeEnabled(ctx)
 
 	// Add total gasWanted to cumulative in block transientStore in FeeMarket module
-	if feeMktParams.IsBaseFeeEnabled(ctx.BlockHeight()) {
+	if isBaseFeeEnabled {
 		if _, err := gwd.feeMarketKeeper.AddTransientGasWanted(ctx, gasWanted); err != nil {
 			return ctx, sdkerrors.Wrapf(err, "failed to add gas wanted to transient store")
 		}

app/ante/fees.go

@@ -37,10 +37,10 @@ func (mpd MinGasPriceDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate
 		return next(ctx, tx, simulate)
 	}
 
-	evmParams := mpd.evmKeeper.GetParams(ctx)
+	evmDenom := mpd.evmKeeper.GetEVMDenom(ctx)
 	minGasPrices := sdk.DecCoins{
 		{
-			Denom:  evmParams.EvmDenom,
+			Denom:  evmDenom,
 			Amount: minGasPrice,
 		},
 	}
@@ -93,8 +93,8 @@ func (empd EthMinGasPriceDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simul
 		return next(ctx, tx, simulate)
 	}
 
-	paramsEvm := empd.evmKeeper.GetParams(ctx)
-	ethCfg := paramsEvm.ChainConfig.EthereumConfig(empd.evmKeeper.ChainID())
+	chainCfg := empd.evmKeeper.GetChainConfig(ctx)
+	ethCfg := chainCfg.EthereumConfig(empd.evmKeeper.ChainID())
 	baseFee := empd.evmKeeper.GetBaseFee(ctx, ethCfg)
 
 	for _, msg := range tx.GetMsgs() {

app/ante/handler_options.go

@@ -20,7 +20,7 @@ type HandlerOptions struct {
 	AccountKeeper          evmtypes.AccountKeeper
 	BankKeeper             evmtypes.BankKeeper
 	IBCKeeper              *ibckeeper.Keeper
-	FeeMarketKeeper        evmtypes.FeeMarketKeeper
+	FeeMarketKeeper        FeeMarketKeeper
 	EvmKeeper              EVMKeeper
 	FeegrantKeeper         ante.FeegrantKeeper
 	SignModeHandler        authsigning.SignModeHandler
@@ -70,9 +70,9 @@ func newCosmosAnteHandler(options HandlerOptions) sdk.AnteHandler {
 		RejectMessagesDecorator{}, // reject MsgEthereumTxs
 		ante.NewSetUpContextDecorator(),
 		ante.NewExtensionOptionsDecorator(options.ExtensionOptionChecker),
-		NewMinGasPriceDecorator(options.FeeMarketKeeper, options.EvmKeeper),
 		ante.NewValidateBasicDecorator(),
 		ante.NewTxTimeoutHeightDecorator(),
+		NewMinGasPriceDecorator(options.FeeMarketKeeper, options.EvmKeeper),
 		ante.NewValidateMemoDecorator(options.AccountKeeper),
 		ante.NewConsumeGasForTxSizeDecorator(options.AccountKeeper),
 		ante.NewDeductFeeDecorator(options.AccountKeeper, options.BankKeeper, options.FeegrantKeeper, options.TxFeeChecker),
@@ -93,9 +93,9 @@ func newCosmosAnteHandlerEip712(options HandlerOptions) sdk.AnteHandler {
 		ante.NewSetUpContextDecorator(),
 		// NOTE: extensions option decorator removed
 		// ante.NewRejectExtensionOptionsDecorator(),
-		NewMinGasPriceDecorator(options.FeeMarketKeeper, options.EvmKeeper),
 		ante.NewValidateBasicDecorator(),
 		ante.NewTxTimeoutHeightDecorator(),
+		NewMinGasPriceDecorator(options.FeeMarketKeeper, options.EvmKeeper),
 		ante.NewValidateMemoDecorator(options.AccountKeeper),
 		ante.NewConsumeGasForTxSizeDecorator(options.AccountKeeper),
 		ante.NewDeductFeeDecorator(options.AccountKeeper, options.BankKeeper, options.FeegrantKeeper, options.TxFeeChecker),

app/ante/interfaces.go

@@ -34,6 +34,11 @@ type EVMKeeper interface {
 	GetBalance(ctx sdk.Context, addr common.Address) *big.Int
 	ResetTransientGasUsed(ctx sdk.Context)
 	GetTxIndexTransient(ctx sdk.Context) uint64
+	GetChainConfig(ctx sdk.Context) evmtypes.ChainConfig
+	GetEVMDenom(ctx sdk.Context) string
+	GetEnableCreate(ctx sdk.Context) bool
+	GetEnableCall(ctx sdk.Context) bool
+	GetAllowUnprotectedTxs(ctx sdk.Context) bool
 }
 
 type protoTxProvider interface {
@@ -44,4 +49,5 @@ type protoTxProvider interface {
 type FeeMarketKeeper interface {
 	GetParams(ctx sdk.Context) (params feemarkettypes.Params)
 	AddTransientGasWanted(ctx sdk.Context, gasWanted uint64) (uint64, error)
+	GetBaseFeeEnabled(ctx sdk.Context) bool
 }

ethereum/eip712/preprocess_test.go

@@ -23,9 +23,11 @@ import (
 )
 
 // Testing Constants
-var chainId = "ethermint_9000-1"
-var ctx = client.Context{}.WithTxConfig(
-	encoding.MakeConfig(app.ModuleBasics).TxConfig,
+var (
+	chainId = "ethermint_9000-1"
+	ctx     = client.Context{}.WithTxConfig(
+		encoding.MakeConfig(app.ModuleBasics).TxConfig,
+	)
 )
 var feePayerAddress = "ethm17xpfvakm2amg962yls6f84z3kell8c5lthdzgl"
 

tests/rpc/ws_test.go

@@ -3,13 +3,14 @@ package rpc
 import (
 	"encoding/json"
 	"fmt"
-	"github.com/gorilla/websocket"
-	"github.com/stretchr/testify/require"
 	"net/url"
 	"os"
 	"strings"
 	"testing"
 	"time"
+
+	"github.com/gorilla/websocket"
+	"github.com/stretchr/testify/require"
 )
 
 var (

x/evm/keeper/params.go

@@ -21,3 +21,38 @@ func (k Keeper) GetParams(ctx sdk.Context) (params types.Params) {
 func (k Keeper) SetParams(ctx sdk.Context, params types.Params) {
 	k.paramSpace.SetParamSet(ctx, &params)
 }
+
+// GetChainConfig returns the chain configuration parameter.
+func (k Keeper) GetChainConfig(ctx sdk.Context) types.ChainConfig {
+	chainCfg := types.ChainConfig{}
+	k.paramSpace.GetIfExists(ctx, types.ParamStoreKeyChainConfig, &chainCfg)
+	return chainCfg
+}
+
+// GetEVMDenom returns the EVM denom.
+func (k Keeper) GetEVMDenom(ctx sdk.Context) string {
+	evmDenom := ""
+	k.paramSpace.GetIfExists(ctx, types.ParamStoreKeyEVMDenom, &evmDenom)
+	return evmDenom
+}
+
+// GetEnableCall returns true if the EVM Call operation is enabled.
+func (k Keeper) GetEnableCall(ctx sdk.Context) bool {
+	enableCall := false
+	k.paramSpace.GetIfExists(ctx, types.ParamStoreKeyEnableCall, &enableCall)
+	return enableCall
+}
+
+// GetEnableCreate returns true if the EVM Create contract operation is enabled.
+func (k Keeper) GetEnableCreate(ctx sdk.Context) bool {
+	enableCreate := false
+	k.paramSpace.GetIfExists(ctx, types.ParamStoreKeyEnableCreate, &enableCreate)
+	return enableCreate
+}
+
+// GetAllowUnprotectedTxs returns true if unprotected txs (i.e non-replay protected as per EIP-155) are supported by the chain.
+func (k Keeper) GetAllowUnprotectedTxs(ctx sdk.Context) bool {
+	allowUnprotectedTx := false
+	k.paramSpace.GetIfExists(ctx, types.ParamStoreKeyAllowUnprotectedTxs, &allowUnprotectedTx)
+	return allowUnprotectedTx
+}