make MaxTxGasWanted configurable (#1004)

app/ante/eth.go

@@ -136,15 +136,18 @@ func (avd EthAccountVerificationDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx
 // EthGasConsumeDecorator validates enough intrinsic gas for the transaction and
 // gas consumption.
 type EthGasConsumeDecorator struct {
-	evmKeeper EVMKeeper
+	evmKeeper    EVMKeeper
+	maxGasWanted uint64
 }
 
 // NewEthGasConsumeDecorator creates a new EthGasConsumeDecorator
 func NewEthGasConsumeDecorator(
 	evmKeeper EVMKeeper,
+	maxGasWanted uint64,
 ) EthGasConsumeDecorator {
 	return EthGasConsumeDecorator{
-		evmKeeper: evmKeeper,
+		evmKeeper,
+		maxGasWanted,
 	}
 }
 
@@ -188,8 +191,8 @@ func (egcd EthGasConsumeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simula
 
 		if ctx.IsCheckTx() {
 			// We can't trust the tx gas limit, because we'll refund the unused gas.
-			if txData.GetGas() > MaxTxGasWanted {
-				gasWanted += MaxTxGasWanted
+			if txData.GetGas() > egcd.maxGasWanted {
+				gasWanted += egcd.maxGasWanted
 			} else {
 				gasWanted += txData.GetGas()
 			}

app/ante/eth_test.go

@@ -6,6 +6,7 @@ import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
 
 	"github.com/tharsis/ethermint/app/ante"
+	"github.com/tharsis/ethermint/server/config"
 	"github.com/tharsis/ethermint/tests"
 	"github.com/tharsis/ethermint/x/evm/statedb"
 	evmtypes "github.com/tharsis/ethermint/x/evm/types"
@@ -201,7 +202,7 @@ func (suite AnteTestSuite) TestEthNonceVerificationDecorator() {
 }
 
 func (suite AnteTestSuite) TestEthGasConsumeDecorator() {
-	dec := ante.NewEthGasConsumeDecorator(suite.app.EvmKeeper)
+	dec := ante.NewEthGasConsumeDecorator(suite.app.EvmKeeper, config.DefaultMaxTxGasWanted)
 
 	addr := tests.GenerateAddress()
 

app/ante/handler_options.go

@@ -25,6 +25,7 @@ type HandlerOptions struct {
 	FeegrantKeeper  ante.FeegrantKeeper
 	SignModeHandler authsigning.SignModeHandler
 	SigGasConsumer  func(meter sdk.GasMeter, sig signing.SignatureV2, params authtypes.Params) error
+	MaxTxGasWanted  uint64
 }
 
 func (options HandlerOptions) Validate() error {
@@ -53,7 +54,7 @@ func newEthAnteHandler(options HandlerOptions) sdk.AnteHandler {
 		NewEthValidateBasicDecorator(options.EvmKeeper),
 		NewEthSigVerificationDecorator(options.EvmKeeper),
 		NewEthAccountVerificationDecorator(options.AccountKeeper, options.BankKeeper, options.EvmKeeper),
-		NewEthGasConsumeDecorator(options.EvmKeeper),
+		NewEthGasConsumeDecorator(options.EvmKeeper, options.MaxTxGasWanted),
 		NewCanTransferDecorator(options.EvmKeeper),
 		NewEthIncrementSenderSequenceDecorator(options.AccountKeeper), // innermost AnteDecorator.
 	)

app/app.go

@@ -567,6 +567,7 @@ func NewEthermintApp(
 
 	// use Ethermint's custom AnteHandler
 
+	maxGasWanted := cast.ToUint64(appOpts.Get(srvflags.EVMMaxTxGasWanted))
 	options := ante.HandlerOptions{
 		AccountKeeper:   app.AccountKeeper,
 		BankKeeper:      app.BankKeeper,
@@ -576,6 +577,7 @@ func NewEthermintApp(
 		FeeMarketKeeper: app.FeeMarketKeeper,
 		SignModeHandler: encodingConfig.TxConfig.SignModeHandler(),
 		SigGasConsumer:  ante.DefaultSigVerificationGasConsumer,
+		MaxTxGasWanted:  maxGasWanted,
 	}
 
 	if err := options.Validate(); err != nil {