more fixes

app/ante/ante.go

@@ -2,6 +2,9 @@ package ante
 
 import (
 	"fmt"
+	"runtime/debug"
+
+	log "github.com/xlab/suplog"
 
 	"github.com/cosmos/cosmos-sdk/crypto/keys/ed25519"
 	"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
@@ -14,7 +17,6 @@ import (
 	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
 
 	"github.com/cosmos/ethermint/crypto/ethsecp256k1"
-	evmtypes "github.com/cosmos/ethermint/x/evm/types"
 )
 
 const (
@@ -28,6 +30,8 @@ const (
 type AccountKeeper interface {
 	authante.AccountKeeper
 	NewAccountWithAddress(ctx sdk.Context, addr sdk.AccAddress) authtypes.AccountI
+	GetAccount(ctx sdk.Context, addr sdk.AccAddress) authtypes.AccountI
+	SetAccount(ctx sdk.Context, account authtypes.AccountI)
 }
 
 // BankKeeper defines an expected keeper interface for the bank module's Keeper
@@ -42,26 +46,73 @@ type BankKeeper interface {
 // transaction-level processing (e.g. fee payment, signature verification) before
 // being passed onto it's respective handler.
 func NewAnteHandler(
-	ak AccountKeeper, bankKeeper BankKeeper, evmKeeper EVMKeeper, signModeHandler authsigning.SignModeHandler,
+	ak AccountKeeper,
+	bankKeeper BankKeeper,
+	evmKeeper EVMKeeper,
+	signModeHandler authsigning.SignModeHandler,
 ) sdk.AnteHandler {
 	return func(
 		ctx sdk.Context, tx sdk.Tx, sim bool,
 	) (newCtx sdk.Context, err error) {
 		var anteHandler sdk.AnteHandler
-		switch tx.(type) {
-		case *evmtypes.MsgEthereumTx:
-			anteHandler = sdk.ChainAnteDecorators(
-				NewEthSetupContextDecorator(), // outermost AnteDecorator. EthSetUpContext must be called first
-				authante.NewRejectExtensionOptionsDecorator(),
-				NewEthMempoolFeeDecorator(evmKeeper),
-				authante.NewValidateBasicDecorator(),
-				NewEthSigVerificationDecorator(),
-				NewAccountVerificationDecorator(ak, bankKeeper, evmKeeper),
-				NewNonceVerificationDecorator(ak),
-				NewEthGasConsumeDecorator(ak, bankKeeper, evmKeeper),
-				NewIncrementSenderSequenceDecorator(ak), // innermost AnteDecorator.
-			)
 
+		defer Recover(&err)
+
+		txWithExtensions, ok := tx.(authante.HasExtensionOptionsTx)
+		if ok {
+			opts := txWithExtensions.GetExtensionOptions()
+			if len(opts) > 0 {
+				switch typeURL := opts[0].GetTypeUrl(); typeURL {
+				case "/injective.evm.v1beta1.ExtensionOptionsEthereumTx":
+					// handle as *evmtypes.MsgEthereumTx
+
+					anteHandler = sdk.ChainAnteDecorators(
+						NewEthSetupContextDecorator(), // outermost AnteDecorator. EthSetUpContext must be called first
+						NewEthMempoolFeeDecorator(evmKeeper),
+						NewEthValidateBasicDecorator(),
+						authante.TxTimeoutHeightDecorator{},
+						NewEthSigVerificationDecorator(),
+						NewEthAccountSetupDecorator(ak),
+						NewEthAccountVerificationDecorator(ak, bankKeeper, evmKeeper),
+						NewEthNonceVerificationDecorator(ak),
+						NewEthGasConsumeDecorator(ak, bankKeeper, evmKeeper),
+						NewEthIncrementSenderSequenceDecorator(ak), // innermost AnteDecorator.
+					)
+
+				case "/injective.evm.v1beta1.ExtensionOptionsWeb3Tx":
+					// handle as normal Cosmos SDK tx, except signature is checked for EIP712 representation
+
+					switch tx.(type) {
+					case sdk.Tx:
+						anteHandler = sdk.ChainAnteDecorators(
+							authante.NewSetUpContextDecorator(), // outermost AnteDecorator. SetUpContext must be called first
+							authante.NewMempoolFeeDecorator(),
+							authante.NewValidateBasicDecorator(),
+							authante.TxTimeoutHeightDecorator{},
+							authante.NewValidateMemoDecorator(ak),
+							authante.NewConsumeGasForTxSizeDecorator(ak),
+							authante.NewSetPubKeyDecorator(ak), // SetPubKeyDecorator must be called before all signature verification decorators
+							authante.NewValidateSigCountDecorator(ak),
+							authante.NewDeductFeeDecorator(ak, bankKeeper),
+							authante.NewSigGasConsumeDecorator(ak, DefaultSigVerificationGasConsumer),
+							authante.NewIncrementSequenceDecorator(ak), // innermost AnteDecorator
+						)
+					default:
+						return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx)
+					}
+
+				default:
+					log.WithField("type_url", typeURL).Errorln("rejecting tx with unsupported extension option")
+					return ctx, sdkerrors.ErrUnknownExtensionOptions
+				}
+
+				return anteHandler(ctx, tx, sim)
+			}
+		}
+
+		// handle as totally normal Cosmos SDK tx
+
+		switch tx.(type) {
 		case sdk.Tx:
 			anteHandler = sdk.ChainAnteDecorators(
 				authante.NewSetUpContextDecorator(), // outermost AnteDecorator. SetUpContext must be called first
@@ -71,7 +122,6 @@ func NewAnteHandler(
 				authante.TxTimeoutHeightDecorator{},
 				authante.NewValidateMemoDecorator(ak),
 				authante.NewConsumeGasForTxSizeDecorator(ak),
-				authante.NewRejectFeeGranterDecorator(),
 				authante.NewSetPubKeyDecorator(ak), // SetPubKeyDecorator must be called before all signature verification decorators
 				authante.NewValidateSigCountDecorator(ak),
 				authante.NewDeductFeeDecorator(ak, bankKeeper),
@@ -87,7 +137,20 @@ func NewAnteHandler(
 	}
 }
 
-var _ = DefaultSigVerificationGasConsumer
+func Recover(err *error) {
+	if r := recover(); r != nil {
+		*err = sdkerrors.Wrapf(sdkerrors.ErrPanic, "%v", r)
+
+		if e, ok := r.(error); ok {
+			log.WithError(e).Errorln("ante handler panicked with an error")
+			log.Debugln(string(debug.Stack()))
+		} else {
+			log.Errorln(r)
+		}
+	}
+}
+
+var _ authante.SignatureVerificationGasConsumer = DefaultSigVerificationGasConsumer
 
 // DefaultSigVerificationGasConsumer is the default implementation of SignatureVerificationGasConsumer. It consumes gas
 // for signature verification based upon the public key type. The cost is fetched from the given params and is matched
@@ -105,7 +168,7 @@ func DefaultSigVerificationGasConsumer(
 		meter.ConsumeGas(params.SigVerifyCostSecp256k1, "ante verify: secp256k1")
 		return nil
 
-	// support for etherum ECDSA secp256k1 keys
+	// support for ethereum ECDSA secp256k1 keys
 	case *ethsecp256k1.PubKey:
 		meter.ConsumeGas(secp256k1VerifyCost, "ante verify: eth_secp256k1")
 		return nil
@@ -120,6 +183,7 @@ func DefaultSigVerificationGasConsumer(
 			return err
 		}
 		return nil
+
 	default:
 		return sdkerrors.Wrapf(sdkerrors.ErrInvalidPubKey, "unrecognized public key type: %T", pubkey)
 	}

app/ante/ante_test.go

@@ -9,9 +9,9 @@ import (
 
 	ethcmn "github.com/ethereum/go-ethereum/common"
 
+	tmcrypto "github.com/tendermint/tendermint/crypto"
 	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
 
-	cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 
 	"github.com/cosmos/ethermint/app"
@@ -62,8 +62,7 @@ func (suite *AnteTestSuite) TestValidEthTx() {
 	requireValidTx(suite.T(), suite.anteHandler, suite.ctx, tx, false)
 }
 
-// the legacytx.NewStdTx has been deprecated and It only works with Amino now
-func (suite *AnteTestSuite) TestInValidTx() {
+func (suite *AnteTestSuite) TestValidTx() {
 	suite.ctx = suite.ctx.WithBlockHeight(1)
 
 	addr1, priv1 := newTestAddrKey()
@@ -84,13 +83,13 @@ func (suite *AnteTestSuite) TestInValidTx() {
 	msg1 := newTestMsg(addr1, addr2)
 	msgs := []sdk.Msg{msg1}
 
-	privKeys := []cryptotypes.PrivKey{priv1, priv2}
+	privKeys := []tmcrypto.PrivKey{priv1, priv2}
 	accNums := []uint64{acc1.GetAccountNumber(), acc2.GetAccountNumber()}
 	accSeqs := []uint64{acc1.GetSequence(), acc2.GetSequence()}
 
 	tx := newTestSDKTx(suite.ctx, msgs, privKeys, accNums, accSeqs, fee)
 
-	requireInvalidTx(suite.T(), suite.anteHandler, suite.ctx, tx, false)
+	requireValidTx(suite.T(), suite.anteHandler, suite.ctx, tx, false)
 }
 
 func (suite *AnteTestSuite) TestSDKInvalidSigs() {
@@ -116,7 +115,7 @@ func (suite *AnteTestSuite) TestSDKInvalidSigs() {
 	// require validation failure with no signers
 	msgs := []sdk.Msg{msg1}
 
-	privKeys := []cryptotypes.PrivKey{}
+	privKeys := []tmcrypto.PrivKey{}
 	accNums := []uint64{acc1.GetAccountNumber(), acc2.GetAccountNumber()}
 	accSeqs := []uint64{acc1.GetSequence(), acc2.GetSequence()}
 
@@ -126,7 +125,7 @@ func (suite *AnteTestSuite) TestSDKInvalidSigs() {
 	// require validation failure with invalid number of signers
 	msgs = []sdk.Msg{msg1}
 
-	privKeys = []cryptotypes.PrivKey{priv1}
+	privKeys = []tmcrypto.PrivKey{priv1}
 	accNums = []uint64{acc1.GetAccountNumber(), acc2.GetAccountNumber()}
 	accSeqs = []uint64{acc1.GetSequence(), acc2.GetSequence()}
 
@@ -137,7 +136,7 @@ func (suite *AnteTestSuite) TestSDKInvalidSigs() {
 	msg2 := newTestMsg(addr1, addr3)
 	msgs = []sdk.Msg{msg1, msg2}
 
-	privKeys = []cryptotypes.PrivKey{priv1, priv2, priv3}
+	privKeys = []tmcrypto.PrivKey{priv1, priv2, priv3}
 	accNums = []uint64{acc1.GetAccountNumber(), acc2.GetAccountNumber(), 0}
 	accSeqs = []uint64{acc1.GetSequence(), acc2.GetSequence(), 0}
 
@@ -158,7 +157,7 @@ func (suite *AnteTestSuite) TestSDKInvalidAcc() {
 	fee := newTestStdFee()
 	msg1 := newTestMsg(addr1)
 	msgs := []sdk.Msg{msg1}
-	privKeys := []cryptotypes.PrivKey{priv1}
+	privKeys := []tmcrypto.PrivKey{priv1}
 
 	// require validation failure with invalid account number
 	accNums := []uint64{1}

app/ante/eth.go

@@ -4,11 +4,14 @@ import (
 	"fmt"
 	"math/big"
 
+	log "github.com/xlab/suplog"
+
+	codectypes "github.com/cosmos/cosmos-sdk/codec/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 	authante "github.com/cosmos/cosmos-sdk/x/auth/ante"
 
-	ethermint "github.com/cosmos/ethermint/types"
+	sidechain "github.com/cosmos/ethermint/types"
 	evmtypes "github.com/cosmos/ethermint/x/evm/types"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -37,6 +40,8 @@ func NewEthSetupContextDecorator() EthSetupContextDecorator {
 // This is undone at the EthGasConsumeDecorator, where the context is set with the
 // ethereum tx GasLimit.
 func (escd EthSetupContextDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
+	ctx = ctx.WithGasMeter(sdk.NewInfiniteGasMeter())
+
 	// all transactions must implement GasTx
 	gasTx, ok := tx.(authante.GasTx)
 	if !ok {
@@ -58,6 +63,7 @@ func (escd EthSetupContextDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simu
 				)
 				err = sdkerrors.Wrap(sdkerrors.ErrOutOfGas, log)
 			default:
+				log.Errorln(r)
 				panic(r)
 			}
 		}
@@ -89,41 +95,77 @@ func (emfd EthMempoolFeeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simula
 		return next(ctx, tx, simulate)
 	}
 
-	msgEthTx, ok := tx.(*evmtypes.MsgEthereumTx)
+	msgEthTx, ok := tx.(sdk.FeeTx)
 	if !ok {
-		return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx)
+		return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type, not implements sdk.FeeTx: %T", tx)
 	}
 
 	evmDenom := emfd.evmKeeper.GetParams(ctx).EvmDenom
+	txFee := msgEthTx.GetFee().AmountOf(evmDenom).Int64()
+	if txFee < 0 {
+		return ctx, sdkerrors.Wrap(
+			sdkerrors.ErrInsufficientFee,
+			"negative fee not allowed",
+		)
+	}
 
-	// fee = gas price * gas limit
-	fee := sdk.NewDecCoin(evmDenom, sdk.NewIntFromBigInt(msgEthTx.Fee()))
+	// txFee = GP * GL
+	fee := sdk.NewInt64DecCoin(evmDenom, txFee)
 
 	minGasPrices := ctx.MinGasPrices()
-	minFees := minGasPrices.AmountOf(evmDenom).MulInt64(int64(msgEthTx.Data.GasLimit))
 
-	// check that fee provided is greater than the minimum defined by the validator node
-	// NOTE: we only check if the evm denom tokens are present in min gas prices. It is up to the
+	// check that fee provided is greater than the minimum
+	// NOTE: we only check if injs are present in min gas prices. It is up to the
 	// sender if they want to send additional fees in other denominations.
 	var hasEnoughFees bool
-	if fee.Amount.GTE(minFees) {
+	if fee.Amount.GTE(minGasPrices.AmountOf(evmDenom)) {
 		hasEnoughFees = true
 	}
 
-	// reject transaction if minimum gas price is not zero and the transaction does not
+	// reject transaction if minimum gas price is positive and the transaction does not
 	// meet the minimum fee
 	if !ctx.MinGasPrices().IsZero() && !hasEnoughFees {
 		return ctx, sdkerrors.Wrap(
 			sdkerrors.ErrInsufficientFee,
-			fmt.Sprintf("insufficient fee, got: %q required: %q", fee, minFees),
+			fmt.Sprintf("insufficient fee, got: %q required: %q", fee, ctx.MinGasPrices()),
 		)
 	}
 
 	return next(ctx, tx, simulate)
 }
 
+// EthValidateBasicDecorator will call tx.ValidateBasic and return any non-nil error.
+// If ValidateBasic passes, decorator calls next AnteHandler in chain. Note,
+// EthValidateBasicDecorator decorator will not get executed on ReCheckTx since it
+// is not dependent on application state.
+type EthValidateBasicDecorator struct{}
+
+func NewEthValidateBasicDecorator() EthValidateBasicDecorator {
+	return EthValidateBasicDecorator{}
+}
+
+func (vbd EthValidateBasicDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error) {
+	// no need to validate basic on recheck tx, call next antehandler
+	if ctx.IsReCheckTx() {
+		return next(ctx, tx, simulate)
+	}
+
+	msgEthTx, ok := getTxMsg(tx).(*evmtypes.MsgEthereumTx)
+	if !ok {
+		return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", getTxMsg(tx))
+	}
+
+	if err := msgEthTx.ValidateBasic(); err != nil {
+		return ctx, err
+	}
+
+	return next(ctx, tx, simulate)
+}
+
 // EthSigVerificationDecorator validates an ethereum signature
-type EthSigVerificationDecorator struct{}
+type EthSigVerificationDecorator struct {
+	interfaceRegistry codectypes.InterfaceRegistry
+}
 
 // NewEthSigVerificationDecorator creates a new EthSigVerificationDecorator
 func NewEthSigVerificationDecorator() EthSigVerificationDecorator {
@@ -132,39 +174,63 @@ func NewEthSigVerificationDecorator() EthSigVerificationDecorator {
 
 // AnteHandle validates the signature and returns sender address
 func (esvd EthSigVerificationDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
-	msgEthTx, ok := tx.(*evmtypes.MsgEthereumTx)
+	if simulate {
+		// when simulating, no signatures required and the from address is explicitly set
+		return next(ctx, tx, simulate)
+	}
+
+	msgEthTx, ok := getTxMsg(tx).(*evmtypes.MsgEthereumTx)
 	if !ok {
-		return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx)
+		return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", getTxMsg(tx))
 	}
 
 	// parse the chainID from a string to a base-10 integer
-	chainIDEpoch, err := ethermint.ParseChainID(ctx.ChainID())
+	chainIDEpoch, err := sidechain.ParseChainID(ctx.ChainID())
 	if err != nil {
+		fmt.Println("chain id parsing failed")
+
 		return ctx, err
 	}
 
-	// validate sender/signature and cache the address
-	_, err = msgEthTx.VerifySig(chainIDEpoch)
-	if err != nil {
-		return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnauthorized, "signature verification failed: %s", err.Error())
+	// validate sender/signature
+	_, eip155Err := msgEthTx.VerifySig(chainIDEpoch)
+	if eip155Err != nil {
+		_, homesteadErr := msgEthTx.VerifySigHomestead()
+		if homesteadErr != nil {
+			errMsg := fmt.Sprintf("signature verification failed for both EIP155 and Homestead signers: (%s, %s)",
+				eip155Err.Error(), homesteadErr.Error())
+			err := sdkerrors.Wrap(sdkerrors.ErrUnauthorized, errMsg)
+			return ctx, err
+		}
 	}
 
 	// NOTE: when signature verification succeeds, a non-empty signer address can be
 	// retrieved from the transaction on the next AnteDecorators.
 
-	return next(ctx, msgEthTx, simulate)
+	return next(ctx, tx, simulate)
 }
 
-// AccountVerificationDecorator validates an account balance checks
-type AccountVerificationDecorator struct {
+type noMessages struct{}
+
+func getTxMsg(tx sdk.Tx) interface{} {
+	msgs := tx.GetMsgs()
+	if len(msgs) == 0 {
+		return &noMessages{}
+	}
+
+	return msgs[0]
+}
+
+// EthAccountVerificationDecorator validates an account balance checks
+type EthAccountVerificationDecorator struct {
 	ak         AccountKeeper
 	bankKeeper BankKeeper
 	evmKeeper  EVMKeeper
 }
 
-// NewAccountVerificationDecorator creates a new AccountVerificationDecorator
-func NewAccountVerificationDecorator(ak AccountKeeper, bankKeeper BankKeeper, ek EVMKeeper) AccountVerificationDecorator {
-	return AccountVerificationDecorator{
+// NewEthAccountVerificationDecorator creates a new EthAccountVerificationDecorator
+func NewEthAccountVerificationDecorator(ak AccountKeeper, bankKeeper BankKeeper, ek EVMKeeper) EthAccountVerificationDecorator {
+	return EthAccountVerificationDecorator{
 		ak:         ak,
 		bankKeeper: bankKeeper,
 		evmKeeper:  ek,
@@ -172,20 +238,20 @@ func NewAccountVerificationDecorator(ak AccountKeeper, bankKeeper BankKeeper, ek
 }
 
 // AnteHandle validates the signature and returns sender address
-func (avd AccountVerificationDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
+func (avd EthAccountVerificationDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
 	if !ctx.IsCheckTx() {
 		return next(ctx, tx, simulate)
 	}
 
-	msgEthTx, ok := tx.(*evmtypes.MsgEthereumTx)
+	msgEthTx, ok := getTxMsg(tx).(*evmtypes.MsgEthereumTx)
 	if !ok {
-		return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx)
+		return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", getTxMsg(tx))
 	}
 
 	// sender address should be in the tx cache from the previous AnteHandle call
 	address := msgEthTx.GetFrom()
 	if address.Empty() {
-		panic("sender address cannot be empty")
+		log.Panicln("sender address cannot be empty")
 	}
 
 	acc := avd.ak.GetAccount(ctx, address)
@@ -216,31 +282,31 @@ func (avd AccountVerificationDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, s
 	return next(ctx, tx, simulate)
 }
 
-// NonceVerificationDecorator checks that the account nonce from the transaction matches
+// EthNonceVerificationDecorator checks that the account nonce from the transaction matches
 // the sender account sequence.
-type NonceVerificationDecorator struct {
+type EthNonceVerificationDecorator struct {
 	ak AccountKeeper
 }
 
-// NewNonceVerificationDecorator creates a new NonceVerificationDecorator
-func NewNonceVerificationDecorator(ak AccountKeeper) NonceVerificationDecorator {
-	return NonceVerificationDecorator{
+// NewEthNonceVerificationDecorator creates a new EthNonceVerificationDecorator
+func NewEthNonceVerificationDecorator(ak AccountKeeper) EthNonceVerificationDecorator {
+	return EthNonceVerificationDecorator{
 		ak: ak,
 	}
 }
 
 // AnteHandle validates that the transaction nonce is valid (equivalent to the sender account’s
 // current nonce).
-func (nvd NonceVerificationDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
-	msgEthTx, ok := tx.(*evmtypes.MsgEthereumTx)
+func (nvd EthNonceVerificationDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
+	msgEthTx, ok := getTxMsg(tx).(*evmtypes.MsgEthereumTx)
 	if !ok {
-		return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx)
+		return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", getTxMsg(tx))
 	}
 
 	// sender address should be in the tx cache from the previous AnteHandle call
 	address := msgEthTx.GetFrom()
 	if address.Empty() {
-		panic("sender address cannot be empty")
+		log.Panicln("sender address cannot be empty")
 	}
 
 	acc := nvd.ak.GetAccount(ctx, address)
@@ -290,15 +356,15 @@ func NewEthGasConsumeDecorator(ak AccountKeeper, bankKeeper BankKeeper, ek EVMKe
 // constant value of 21000 plus any cost inccured by additional bytes of data
 // supplied with the transaction.
 func (egcd EthGasConsumeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
-	msgEthTx, ok := tx.(*evmtypes.MsgEthereumTx)
+	msgEthTx, ok := getTxMsg(tx).(*evmtypes.MsgEthereumTx)
 	if !ok {
-		return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx)
+		return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", getTxMsg(tx))
 	}
 
 	// sender address should be in the tx cache from the previous AnteHandle call
 	address := msgEthTx.GetFrom()
 	if address.Empty() {
-		panic("sender address cannot be empty")
+		log.Panicln("sender address cannot be empty")
 	}
 
 	// fetch sender account from signature
@@ -328,7 +394,7 @@ func (egcd EthGasConsumeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simula
 	// Charge sender for gas up to limit
 	if gasLimit != 0 {
 		// Cost calculates the fees paid to validators based on gas limit and price
-		cost := new(big.Int).Mul(msgEthTx.Data.Price.BigInt(), new(big.Int).SetUint64(gasLimit))
+		cost := new(big.Int).Mul(new(big.Int).SetBytes(msgEthTx.Data.Price), new(big.Int).SetUint64(gasLimit))
 
 		evmDenom := egcd.evmKeeper.GetParams(ctx).EvmDenom
 
@@ -347,40 +413,40 @@ func (egcd EthGasConsumeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simula
 	return next(newCtx, tx, simulate)
 }
 
-// IncrementSenderSequenceDecorator increments the sequence of the signers. The
+// EthIncrementSenderSequenceDecorator increments the sequence of the signers. The
 // main difference with the SDK's IncrementSequenceDecorator is that the MsgEthereumTx
 // doesn't implement the SigVerifiableTx interface.
 //
 // CONTRACT: must be called after msg.VerifySig in order to cache the sender address.
-type IncrementSenderSequenceDecorator struct {
+type EthIncrementSenderSequenceDecorator struct {
 	ak AccountKeeper
 }
 
-// NewIncrementSenderSequenceDecorator creates a new IncrementSenderSequenceDecorator.
-func NewIncrementSenderSequenceDecorator(ak AccountKeeper) IncrementSenderSequenceDecorator {
-	return IncrementSenderSequenceDecorator{
+// NewEthIncrementSenderSequenceDecorator creates a new EthIncrementSenderSequenceDecorator.
+func NewEthIncrementSenderSequenceDecorator(ak AccountKeeper) EthIncrementSenderSequenceDecorator {
+	return EthIncrementSenderSequenceDecorator{
 		ak: ak,
 	}
 }
 
 // AnteHandle handles incrementing the sequence of the sender.
-func (issd IncrementSenderSequenceDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error) {
+func (issd EthIncrementSenderSequenceDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error) {
 	// get and set account must be called with an infinite gas meter in order to prevent
 	// additional gas from being deducted.
 	gasMeter := ctx.GasMeter()
 	ctx = ctx.WithGasMeter(sdk.NewInfiniteGasMeter())
 
-	msgEthTx, ok := tx.(*evmtypes.MsgEthereumTx)
+	msgEthTx, ok := getTxMsg(tx).(*evmtypes.MsgEthereumTx)
 	if !ok {
 		ctx = ctx.WithGasMeter(gasMeter)
-		return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx)
+		return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", getTxMsg(tx))
 	}
 
 	// increment sequence of all signers
 	for _, addr := range msgEthTx.GetSigners() {
 		acc := issd.ak.GetAccount(ctx, addr)
 		if err := acc.SetSequence(acc.GetSequence() + 1); err != nil {
-			panic(err)
+			log.WithError(err).Panicln("failed to set acc sequence")
 		}
 		issd.ak.SetAccount(ctx, acc)
 	}
@@ -389,3 +455,45 @@ func (issd IncrementSenderSequenceDecorator) AnteHandle(ctx sdk.Context, tx sdk.
 	ctx = ctx.WithGasMeter(gasMeter)
 	return next(ctx, tx, simulate)
 }
+
+// EthAccountSetupDecorator sets an account to state if it's not stored already. This only applies for MsgEthermint.
+type EthAccountSetupDecorator struct {
+	ak AccountKeeper
+}
+
+// NewEthAccountSetupDecorator creates a new EthAccountSetupDecorator instance
+func NewEthAccountSetupDecorator(ak AccountKeeper) EthAccountSetupDecorator {
+	return EthAccountSetupDecorator{
+		ak: ak,
+	}
+}
+
+// AnteHandle sets an account for MsgEthereumTx (evm) if the sender is registered.
+func (asd EthAccountSetupDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error) {
+	// get and set account must be called with an infinite gas meter in order to prevent
+	// additional gas from being deducted.
+	gasMeter := ctx.GasMeter()
+	ctx = ctx.WithGasMeter(sdk.NewInfiniteGasMeter())
+
+	msgEthTx, ok := getTxMsg(tx).(*evmtypes.MsgEthereumTx)
+	if !ok {
+		ctx = ctx.WithGasMeter(gasMeter)
+		return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", getTxMsg(tx))
+	}
+
+	setupAccount(asd.ak, ctx, msgEthTx.GetFrom())
+
+	// set the original gas meter
+	ctx = ctx.WithGasMeter(gasMeter)
+	return next(ctx, tx, simulate)
+}
+
+func setupAccount(ak AccountKeeper, ctx sdk.Context, addr sdk.AccAddress) {
+	acc := ak.GetAccount(ctx, addr)
+	if acc != nil {
+		return
+	}
+
+	acc = ak.NewAccountWithAddress(ctx, addr)
+	ak.SetAccount(ctx, acc)
+}

app/ante/utils_test.go

@@ -6,22 +6,22 @@ import (
 
 	"github.com/stretchr/testify/suite"
 
+	"github.com/cosmos/cosmos-sdk/simapp"
 	"github.com/cosmos/cosmos-sdk/simapp/params"
 	"github.com/cosmos/cosmos-sdk/testutil/testdata"
 	sdk "github.com/cosmos/cosmos-sdk/types"
-	"github.com/cosmos/cosmos-sdk/x/auth/legacy/legacytx"
+	"github.com/cosmos/cosmos-sdk/x/auth"
 	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
 
 	"github.com/cosmos/ethermint/app"
 	ante "github.com/cosmos/ethermint/app/ante"
 	"github.com/cosmos/ethermint/crypto/ethsecp256k1"
-	ethermint "github.com/cosmos/ethermint/types"
+	sidechain "github.com/cosmos/ethermint/types"
 	evmtypes "github.com/cosmos/ethermint/x/evm/types"
 
-	cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
-
 	ethcrypto "github.com/ethereum/go-ethereum/crypto"
 
+	tmcrypto "github.com/tendermint/tendermint/crypto"
 	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
 )
 
@@ -39,11 +39,11 @@ func (suite *AnteTestSuite) SetupTest() {
 
 	suite.app = app.Setup(checkTx)
 
-	suite.ctx = suite.app.BaseApp.NewContext(checkTx, tmproto.Header{Height: 2, ChainID: "ethermint-3", Time: time.Now().UTC()})
+	suite.ctx = suite.app.BaseApp.NewContext(checkTx, tmproto.Header{Height: 2, ChainID: "injective-3", Time: time.Now().UTC()})
 	suite.app.AccountKeeper.SetParams(suite.ctx, authtypes.DefaultParams())
 	suite.app.EvmKeeper.SetParams(suite.ctx, evmtypes.DefaultParams())
 
-	suite.encodingConfig = app.MakeEncodingConfig()
+	suite.encodingConfig = simapp.MakeEncodingConfig()
 	// We're using TestMsg amino encoding in some tests, so register it here.
 	suite.encodingConfig.Amino.RegisterConcrete(&testdata.TestMsg{}, "testdata.TestMsg", nil)
 
@@ -54,20 +54,20 @@ func TestAnteTestSuite(t *testing.T) {
 	suite.Run(t, new(AnteTestSuite))
 }
 
-func newTestMsg(addrs ...sdk.AccAddress) *testdata.TestMsg {
-	return testdata.NewTestMsg(addrs...)
+func newTestMsg(addrs ...sdk.AccAddress) *sdk.TestMsg {
+	return sdk.NewTestMsg(addrs...)
 }
 
 func newTestCoins() sdk.Coins {
-	return sdk.NewCoins(ethermint.NewPhotonCoinInt64(500000000))
+	return sdk.NewCoins(sidechain.NewPhotonCoinInt64(500000000))
 }
 
-func newTestStdFee() legacytx.StdFee {
-	return legacytx.NewStdFee(220000, sdk.NewCoins(ethermint.NewPhotonCoinInt64(150)))
+func newTestStdFee() auth.StdFee {
+	return auth.NewStdFee(220000, sdk.NewCoins(sidechain.NewPhotonCoinInt64(150)))
 }
 
 // GenerateAddress generates an Ethereum address.
-func newTestAddrKey() (sdk.AccAddress, cryptotypes.PrivKey) {
+func newTestAddrKey() (sdk.AccAddress, tmcrypto.PrivKey) {
 	privkey, _ := ethsecp256k1.GenerateKey()
 	addr := ethcrypto.PubkeyToAddress(privkey.ToECDSA().PublicKey)
 
@@ -75,30 +75,30 @@ func newTestAddrKey() (sdk.AccAddress, cryptotypes.PrivKey) {
 }
 
 func newTestSDKTx(
-	ctx sdk.Context, msgs []sdk.Msg, privs []cryptotypes.PrivKey,
-	accNums []uint64, seqs []uint64, fee legacytx.StdFee,
+	ctx sdk.Context, msgs []sdk.Msg, privs []tmcrypto.PrivKey,
+	accNums []uint64, seqs []uint64, fee auth.StdFee,
 ) sdk.Tx {
 
-	sigs := make([]legacytx.StdSignature, len(privs))
+	sigs := make([]auth.StdSignature, len(privs))
 	for i, priv := range privs {
-		signBytes := legacytx.StdSignBytes(ctx.ChainID(), accNums[i], seqs[i], 0, fee, msgs, "")
+		signBytes := auth.StdSignBytes(ctx.ChainID(), accNums[i], seqs[i], fee, msgs, "")
 
 		sig, err := priv.Sign(signBytes)
 		if err != nil {
 			panic(err)
 		}
 
-		sigs[i] = legacytx.StdSignature{
+		sigs[i] = auth.StdSignature{
 			PubKey:    priv.PubKey(),
 			Signature: sig,
 		}
 	}
 
-	return legacytx.NewStdTx(msgs, fee, sigs, "")
+	return auth.NewStdTx(msgs, fee, sigs, "")
 }
 
-func newTestEthTx(ctx sdk.Context, msg *evmtypes.MsgEthereumTx, priv cryptotypes.PrivKey) (sdk.Tx, error) {
-	chainIDEpoch, err := ethermint.ParseChainID(ctx.ChainID())
+func newTestEthTx(ctx sdk.Context, msg *evmtypes.MsgEthereumTx, priv tmcrypto.PrivKey) (sdk.Tx, error) {
+	chainIDEpoch, err := sidechain.ParseChainID(ctx.ChainID())
 	if err != nil {
 		return nil, err
 	}

app/encoding.go

@@ -7,9 +7,9 @@ import (
 	"github.com/cosmos/cosmos-sdk/simapp/params"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/x/auth/tx"
+	evmtypes "github.com/cosmos/ethermint/x/evm/types"
 
 	"github.com/cosmos/ethermint/codec"
-	evmtypes "github.com/cosmos/ethermint/x/evm/types"
 )
 
 // MakeEncodingConfig creates an EncodingConfig for testing
@@ -46,7 +46,7 @@ func NewTxConfig(marshaler amino.ProtoCodecMarshaler) client.TxConfig {
 	}
 }
 
-// TxEncoder overwites sdk.TxEncoder to support MsgEthereumTx
+// TxEncoder overwrites sdk.TxEncoder to support MsgEthereumTx
 func (g txConfig) TxEncoder() sdk.TxEncoder {
 	return func(tx sdk.Tx) ([]byte, error) {
 		ethtx, ok := tx.(*evmtypes.MsgEthereumTx)
@@ -57,7 +57,7 @@ func (g txConfig) TxEncoder() sdk.TxEncoder {
 	}
 }
 
-// TxDecoder overwites sdk.TxDecoder to support MsgEthereumTx
+// TxDecoder overwrites sdk.TxDecoder to support MsgEthereumTx
 func (g txConfig) TxDecoder() sdk.TxDecoder {
 	return func(txBytes []byte) (sdk.Tx, error) {
 		var ethtx evmtypes.MsgEthereumTx

app/ethermint.go

@@ -2,27 +2,29 @@ package app
 
 import (
 	"io"
+	"net/http"
 	"os"
 	"path/filepath"
 
-	"github.com/spf13/cast"
+	"github.com/cosmos/cosmos-sdk/client/grpc/tmservice"
+	servertypes "github.com/cosmos/cosmos-sdk/server/types"
+	authtx "github.com/cosmos/cosmos-sdk/x/auth/tx"
 
+	"github.com/cosmos/cosmos-sdk/client"
+	"github.com/gorilla/mux"
+	"github.com/rakyll/statik/fs"
 	abci "github.com/tendermint/tendermint/abci/types"
-	tmjson "github.com/tendermint/tendermint/libs/json"
 	"github.com/tendermint/tendermint/libs/log"
 	tmos "github.com/tendermint/tendermint/libs/os"
 	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
 	dbm "github.com/tendermint/tm-db"
 
 	"github.com/cosmos/cosmos-sdk/baseapp"
-	"github.com/cosmos/cosmos-sdk/client"
-	"github.com/cosmos/cosmos-sdk/client/grpc/tmservice"
 	"github.com/cosmos/cosmos-sdk/client/rpc"
 	"github.com/cosmos/cosmos-sdk/codec"
 	"github.com/cosmos/cosmos-sdk/codec/types"
-	sdkapi "github.com/cosmos/cosmos-sdk/server/api"
-	sdkconfig "github.com/cosmos/cosmos-sdk/server/config"
-	servertypes "github.com/cosmos/cosmos-sdk/server/types"
+	"github.com/cosmos/cosmos-sdk/server/api"
+	"github.com/cosmos/cosmos-sdk/server/config"
 	"github.com/cosmos/cosmos-sdk/simapp"
 	simappparams "github.com/cosmos/cosmos-sdk/simapp/params"
 	sdk "github.com/cosmos/cosmos-sdk/types"
@@ -31,7 +33,6 @@ import (
 	"github.com/cosmos/cosmos-sdk/x/auth"
 	authkeeper "github.com/cosmos/cosmos-sdk/x/auth/keeper"
 	authsims "github.com/cosmos/cosmos-sdk/x/auth/simulation"
-	authtx "github.com/cosmos/cosmos-sdk/x/auth/tx"
 	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
 	"github.com/cosmos/cosmos-sdk/x/auth/vesting"
 	"github.com/cosmos/cosmos-sdk/x/bank"
@@ -55,7 +56,7 @@ import (
 	"github.com/cosmos/cosmos-sdk/x/gov"
 	govkeeper "github.com/cosmos/cosmos-sdk/x/gov/keeper"
 	govtypes "github.com/cosmos/cosmos-sdk/x/gov/types"
-	transfer "github.com/cosmos/cosmos-sdk/x/ibc/applications/transfer"
+	"github.com/cosmos/cosmos-sdk/x/ibc/applications/transfer"
 	ibctransferkeeper "github.com/cosmos/cosmos-sdk/x/ibc/applications/transfer/keeper"
 	ibctransfertypes "github.com/cosmos/cosmos-sdk/x/ibc/applications/transfer/types"
 	ibc "github.com/cosmos/cosmos-sdk/x/ibc/core"
@@ -83,12 +84,11 @@ import (
 	upgradetypes "github.com/cosmos/cosmos-sdk/x/upgrade/types"
 
 	// unnamed import of statik for swagger UI support
-	_ "github.com/cosmos/cosmos-sdk/client/docs/statik"
+	_ "github.com/cosmos/ethermint/client/docs/statik"
 
 	"github.com/cosmos/ethermint/app/ante"
 	ethermint "github.com/cosmos/ethermint/types"
 	"github.com/cosmos/ethermint/x/evm"
-
 	evmrest "github.com/cosmos/ethermint/x/evm/client/rest"
 	evmkeeper "github.com/cosmos/ethermint/x/evm/keeper"
 	evmtypes "github.com/cosmos/ethermint/x/evm/types"
@@ -105,10 +105,14 @@ func init() {
 		panic(err)
 	}
 
-	DefaultNodeHome = filepath.Join(userHomeDir, ".ethermint")
+	DefaultNodeHome = filepath.Join(userHomeDir, ".ethermintd")
 }
 
-const appName = "Ethermint"
+func init() {
+
+}
+
+const appName = "ethermintd"
 
 var (
 	// DefaultNodeHome default home directories for the application daemon
@@ -156,10 +160,9 @@ var (
 	}
 )
 
-var (
-	// _ simapp.App              = (*EthermintApp)(nil)
-	_ servertypes.Application = (*EthermintApp)(nil)
-)
+var _ simapp.App = (*EthermintApp)(nil)
+
+//var _ server.Application (*EthermintApp)(nil)
 
 // EthermintApp implements an extended ABCI application. It is an application
 // that may process transactions through Ethereum's EVM running atop of
@@ -197,18 +200,17 @@ type EthermintApp struct {
 	ScopedIBCKeeper      capabilitykeeper.ScopedKeeper
 	ScopedTransferKeeper capabilitykeeper.ScopedKeeper
 
-	// ethermint keepers
+	// Ethermint keepers
 	EvmKeeper *evmkeeper.Keeper
 
 	// the module manager
 	mm *module.Manager
 
 	// simulation manager
-	// disable for now, enable it once SDK side fix the simulator issue for custom keys
-	// sm *module.SimulationManager
+	sm *module.SimulationManager
 }
 
-// NewEthermintApp returns a reference to a new initialized Ethermint application.
+// NewEthermintApp returns a reference to a new initialized Injective application.
 func NewEthermintApp(
 	logger log.Logger,
 	db dbm.DB,
@@ -226,7 +228,7 @@ func NewEthermintApp(
 	cdc := encodingConfig.Amino
 	interfaceRegistry := encodingConfig.InterfaceRegistry
 
-	// NOTE we use custom Ethermint transaction decoder that supports the sdk.Tx interface instead of sdk.StdTx
+	// NOTE we use custom Injective transaction decoder that supports the sdk.Tx interface instead of sdk.StdTx
 	bApp := baseapp.NewBaseApp(
 		appName,
 		logger,
@@ -304,6 +306,11 @@ func NewEthermintApp(
 		stakingtypes.NewMultiStakingHooks(app.DistrKeeper.Hooks(), app.SlashingKeeper.Hooks()),
 	)
 
+	// Create Ethermint keepers
+	app.EvmKeeper = evmkeeper.NewKeeper(
+		appCodec, keys[evmtypes.StoreKey], app.GetSubspace(evmtypes.ModuleName), app.AccountKeeper, app.BankKeeper,
+	)
+
 	// Create IBC Keeper
 	app.IBCKeeper = ibckeeper.NewKeeper(
 		appCodec, keys[ibchost.StoreKey], app.GetSubspace(ibchost.ModuleName), app.StakingKeeper, scopedIBCKeeper,
@@ -315,8 +322,8 @@ func NewEthermintApp(
 		AddRoute(paramproposal.RouterKey, params.NewParamChangeProposalHandler(app.ParamsKeeper)).
 		AddRoute(distrtypes.RouterKey, distr.NewCommunityPoolSpendProposalHandler(app.DistrKeeper)).
 		AddRoute(upgradetypes.RouterKey, upgrade.NewSoftwareUpgradeProposalHandler(app.UpgradeKeeper)).
-		AddRoute(ibchost.RouterKey, ibcclient.NewClientUpdateProposalHandler(app.IBCKeeper.ClientKeeper))
-	app.GovKeeper = govkeeper.NewKeeper(
+		AddRoute(ibchost.RouterKey, ibcclient.NewClientUpdateProposalHandler(app.IBCKeeper.ClientKeeper)).
+		app.GovKeeper = govkeeper.NewKeeper(
 		appCodec, keys[govtypes.StoreKey], app.GetSubspace(govtypes.ModuleName), app.AccountKeeper, app.BankKeeper,
 		&stakingKeeper, govRouter,
 	)
@@ -341,16 +348,13 @@ func NewEthermintApp(
 	// If evidence needs to be handled for the app, set routes in router here and seal
 	app.EvidenceKeeper = *evidenceKeeper
 
-	// Create Ethermint keepers
-	app.EvmKeeper = evmkeeper.NewKeeper(
-		appCodec, keys[evmtypes.StoreKey], app.GetSubspace(evmtypes.ModuleName), app.AccountKeeper, app.BankKeeper,
-	)
-
 	/****  Module Options ****/
 
+	// TODO: do properly
 	// NOTE: we may consider parsing `appOpts` inside module constructors. For the moment
 	// we prefer to be more strict in what arguments the modules expect.
-	var skipGenesisInvariants = cast.ToBool(appOpts.Get(crisis.FlagSkipGenesisInvariants))
+	//var skipGenesisInvariants = cast.ToBool(appOpts.Get(crisis.FlagSkipGenesisInvariants))
+	skipGenesisInvariants := true
 
 	// NOTE: Any module instantiated in the module manager that is later modified
 	// must be passed by reference here.
@@ -375,7 +379,7 @@ func NewEthermintApp(
 		ibc.NewAppModule(app.IBCKeeper),
 		params.NewAppModule(app.ParamsKeeper),
 		transferModule,
-		// Ethermint app modules
+		// Injective app modules
 		evm.NewAppModule(app.EvmKeeper, app.AccountKeeper, app.BankKeeper),
 	)
 
@@ -391,8 +395,8 @@ func NewEthermintApp(
 		evidencetypes.ModuleName, stakingtypes.ModuleName, ibchost.ModuleName,
 	)
 	app.mm.SetOrderEndBlockers(
-		evmtypes.ModuleName,
 		crisistypes.ModuleName, govtypes.ModuleName, stakingtypes.ModuleName,
+		evmtypes.ModuleName,
 	)
 
 	// NOTE: The genutils module must occur after staking so that pools are
@@ -405,8 +409,9 @@ func NewEthermintApp(
 		capabilitytypes.ModuleName, authtypes.ModuleName, banktypes.ModuleName, distrtypes.ModuleName, stakingtypes.ModuleName,
 		slashingtypes.ModuleName, govtypes.ModuleName, minttypes.ModuleName,
 		ibchost.ModuleName, genutiltypes.ModuleName, evidencetypes.ModuleName, ibctransfertypes.ModuleName,
-		// Ethermint modules
+		// Injective modules
 		evmtypes.ModuleName,
+
 		// NOTE: crisis module must go at the end to check for invariants on each module
 		crisistypes.ModuleName,
 	)
@@ -415,29 +420,29 @@ func NewEthermintApp(
 	app.mm.RegisterRoutes(app.Router(), app.QueryRouter(), encodingConfig.Amino)
 	app.mm.RegisterServices(module.NewConfigurator(app.MsgServiceRouter(), app.GRPCQueryRouter()))
 
-	// add test gRPC service for testing gRPC queries in isolation
+	//add test gRPC service for testing gRPC queries in isolation
 	// testdata.RegisterTestServiceServer(app.GRPCQueryRouter(), testdata.TestServiceImpl{})
 
-	// create the simulation manager and define the order of the modules for deterministic simulations
-	//
-	// NOTE: this is not required apps that don't use the simulator for fuzz testing
-	// transactions
-	// app.sm = module.NewSimulationManager(
-	//	auth.NewAppModule(appCodec, app.AccountKeeper, authsims.RandomGenesisAccounts),
-	//	bank.NewAppModule(appCodec, app.BankKeeper, app.AccountKeeper),
-	//	capability.NewAppModule(appCodec, *app.CapabilityKeeper),
-	//	gov.NewAppModule(appCodec, app.GovKeeper, app.AccountKeeper, app.BankKeeper),
-	//	mint.NewAppModule(appCodec, app.MintKeeper, app.AccountKeeper),
-	//	staking.NewAppModule(appCodec, app.StakingKeeper, app.AccountKeeper, app.BankKeeper),
-	//	distr.NewAppModule(appCodec, app.DistrKeeper, app.AccountKeeper, app.BankKeeper, app.StakingKeeper),
-	//	slashing.NewAppModule(appCodec, app.SlashingKeeper, app.AccountKeeper, app.BankKeeper, app.StakingKeeper),
-	//	params.NewAppModule(app.ParamsKeeper),
-	//	evidence.NewAppModule(app.EvidenceKeeper),
-	//	ibc.NewAppModule(app.IBCKeeper),
-	//	transferModule,
-	//)
+	//create the simulation manager and define the order of the modules for deterministic simulations
 
-	// app.sm.RegisterStoreDecoders()
+	//NOTE: this is not required apps that don't use the simulator for fuzz testing
+	// transactions
+	app.sm = module.NewSimulationManager(
+		auth.NewAppModule(appCodec, app.AccountKeeper, authsims.RandomGenesisAccounts),
+		bank.NewAppModule(appCodec, app.BankKeeper, app.AccountKeeper),
+		capability.NewAppModule(appCodec, *app.CapabilityKeeper),
+		gov.NewAppModule(appCodec, app.GovKeeper, app.AccountKeeper, app.BankKeeper),
+		mint.NewAppModule(appCodec, app.MintKeeper, app.AccountKeeper),
+		staking.NewAppModule(appCodec, app.StakingKeeper, app.AccountKeeper, app.BankKeeper),
+		distr.NewAppModule(appCodec, app.DistrKeeper, app.AccountKeeper, app.BankKeeper, app.StakingKeeper),
+		slashing.NewAppModule(appCodec, app.SlashingKeeper, app.AccountKeeper, app.BankKeeper, app.StakingKeeper),
+		params.NewAppModule(app.ParamsKeeper),
+		evidence.NewAppModule(app.EvidenceKeeper),
+		ibc.NewAppModule(app.IBCKeeper),
+		transferModule,
+	)
+
+	app.sm.RegisterStoreDecoders()
 
 	// initialize stores
 	app.MountKVStores(keys)
@@ -448,13 +453,14 @@ func NewEthermintApp(
 	app.SetInitChainer(app.InitChainer)
 	app.SetBeginBlocker(app.BeginBlocker)
 
-	// use Ethermint's custom AnteHandler
+	// use Injective's custom AnteHandler
 	app.SetAnteHandler(
 		ante.NewAnteHandler(
 			app.AccountKeeper, app.BankKeeper, app.EvmKeeper,
 			encodingConfig.TxConfig.SignModeHandler(),
 		),
 	)
+
 	app.SetEndBlocker(app.EndBlocker)
 
 	if loadLatest {
@@ -495,9 +501,7 @@ func (app *EthermintApp) EndBlocker(ctx sdk.Context, req abci.RequestEndBlock) a
 // InitChainer updates at chain initialization
 func (app *EthermintApp) InitChainer(ctx sdk.Context, req abci.RequestInitChain) abci.ResponseInitChain {
 	var genesisState simapp.GenesisState
-	if err := tmjson.Unmarshal(req.AppStateBytes, &genesisState); err != nil {
-		panic(err)
-	}
+	app.cdc.MustUnmarshalJSON(req.AppStateBytes, &genesisState)
 	return app.mm.InitGenesis(ctx, app.appCodec, genesisState)
 }
 
@@ -578,36 +582,52 @@ func (app *EthermintApp) GetSubspace(moduleName string) paramstypes.Subspace {
 }
 
 // SimulationManager implements the SimulationApp interface
-// func (app *EthermintApp) SimulationManager() *module.SimulationManager {
-//	return app.sm
-//}
+func (app *EthermintApp) SimulationManager() *module.SimulationManager {
+	return app.sm
+}
 
 // RegisterAPIRoutes registers all application module routes with the provided
 // API server.
-func (app *EthermintApp) RegisterAPIRoutes(apiSvr *sdkapi.Server, apiConfig sdkconfig.APIConfig) {
+func (app *EthermintApp) RegisterAPIRoutes(apiSvr *api.Server, apiConfig config.APIConfig) {
 	clientCtx := apiSvr.ClientCtx
 	rpc.RegisterRoutes(clientCtx, apiSvr.Router)
+
 	evmrest.RegisterTxRoutes(clientCtx, apiSvr.Router)
 
+	// Register new tx routes from grpc-gateway.
+	authtx.RegisterGRPCGatewayRoutes(clientCtx, apiSvr.GRPCGatewayRouter)
+	// Register new tendermint queries routes from grpc-gateway.
+	tmservice.RegisterGRPCGatewayRoutes(clientCtx, apiSvr.GRPCGatewayRouter)
+
+	// Register legacy and grpc-gateway routes for all modules.
 	ModuleBasics.RegisterRESTRoutes(clientCtx, apiSvr.Router)
-	ModuleBasics.RegisterGRPCGatewayRoutes(apiSvr.ClientCtx, apiSvr.GRPCGatewayRouter)
+	ModuleBasics.RegisterGRPCGatewayRoutes(clientCtx, apiSvr.GRPCGatewayRouter)
 
 	// register swagger API from root so that other applications can override easily
 	if apiConfig.Swagger {
-		simapp.RegisterSwaggerAPI(clientCtx, apiSvr.Router)
+		RegisterSwaggerAPI(clientCtx, apiSvr.Router)
 	}
 }
 
-// RegisterTxService implements the Application.RegisterTxService method.
 func (app *EthermintApp) RegisterTxService(clientCtx client.Context) {
 	authtx.RegisterTxService(app.BaseApp.GRPCQueryRouter(), clientCtx, app.BaseApp.Simulate, app.interfaceRegistry)
 }
 
-// RegisterTendermintService implements the Application.RegisterTendermintService method.
 func (app *EthermintApp) RegisterTendermintService(clientCtx client.Context) {
 	tmservice.RegisterTendermintService(app.BaseApp.GRPCQueryRouter(), clientCtx, app.interfaceRegistry)
 }
 
+// RegisterSwaggerAPI registers swagger route with API Server
+func RegisterSwaggerAPI(ctx client.Context, rtr *mux.Router) {
+	statikFS, err := fs.New()
+	if err != nil {
+		panic(err)
+	}
+
+	staticServer := http.FileServer(statikFS)
+	rtr.PathPrefix("/swagger/").Handler(http.StripPrefix("/swagger/", staticServer))
+}
+
 // GetMaccPerms returns a copy of the module account permissions
 func GetMaccPerms() map[string][]string {
 	dupMaccPerms := make(map[string][]string)
@@ -636,6 +656,5 @@ func initParamsKeeper(
 	paramsKeeper.Subspace(ibchost.ModuleName)
 	// ethermint subspaces
 	paramsKeeper.Subspace(evmtypes.ModuleName)
-
 	return paramsKeeper
 }

app/export.go

@@ -34,6 +34,7 @@ func (app *EthermintApp) ExportAppStateAndValidators(
 	height := app.LastBlockHeight() + 1
 	if forZeroHeight {
 		height = 0
+
 		if err := app.prepForZeroHeightGenesis(ctx, jailAllowedAddrs); err != nil {
 			return servertypes.ExportedApp{}, err
 		}
@@ -60,7 +61,7 @@ func (app *EthermintApp) ExportAppStateAndValidators(
 
 // prepare for fresh start at zero height
 // NOTE zero height genesis is a temporary feature which will be deprecated
-//      in favour of export at a block height
+//      in favor of export at a block height
 func (app *EthermintApp) prepForZeroHeightGenesis(ctx sdk.Context, jailAllowedAddrs []string) error {
 	applyAllowedAddrs := false
 

client/docs/config.json

@@ -0,0 +1,69 @@
+{
+    "swagger": "2.0",
+    "info": {
+      "title": "Ethermint Chain - Legacy REST and gRPC Gateway docs",
+      "description": "A REST interface for state queries, legacy transactions",
+      "version": "1.0.0"
+    },
+    "apis": [
+      {
+        "url": "./tmp-swagger-gen/ethermint/evm/v1beta1/query.swagger.json",
+        "operationIds": {
+          "rename": {
+            "Params": "EvmParams"
+          }
+        }
+      },
+      {
+        "url": "./tmp-swagger-gen/cosmos/auth/v1beta1/query.swagger.json",
+        "operationIds": {
+          "rename": {
+            "Account": "AuthAccount",
+            "Params": "AuthParams"
+          }
+        }
+      },
+      {
+        "url": "./tmp-swagger-gen/cosmos/bank/v1beta1/query.swagger.json",
+        "operationIds": {
+          "rename": {
+            "Balance": "BankBalance",
+            "Params": "BankParams"
+          }
+        }
+      },
+      {
+        "url": "./tmp-swagger-gen/cosmos/distribution/v1beta1/query.swagger.json",
+        "operationIds": {
+          "rename": {
+            "Params": "DistributionParams",
+            "DelegatorValidators": "DistDelegatorValidators"
+          }
+        }
+      },
+      {
+        "url": "./tmp-swagger-gen/cosmos/mint/v1beta1/query.swagger.json",
+        "operationIds": {
+          "rename": {
+            "Params": "MintParams"
+          }
+        }
+      },
+      {
+        "url": "./tmp-swagger-gen/cosmos/gov/v1beta1/query.swagger.json",
+        "operationIds": {
+          "rename": {
+            "Params": "GovParams"
+          }
+        }
+      },
+      {
+        "url": "./tmp-swagger-gen/cosmos/staking/v1beta1/query.swagger.json",
+        "operationIds": {
+          "rename": {
+            "Params": "StakingParams"
+          }
+        }
+      }
+    ]
+  }

client/docs/swagger-ui/index.html

@@ -0,0 +1,60 @@
+<!-- HTML for static distribution bundle build -->
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8">
+    <title>Swagger UI</title>
+    <link rel="stylesheet" type="text/css" href="swagger-ui.css" >
+    <link rel="icon" type="image/png" href="favicon-32x32.png" sizes="32x32" />
+    <link rel="icon" type="image/png" href="favicon-16x16.png" sizes="16x16" />
+    <style>
+      html
+      {
+        box-sizing: border-box;
+        overflow: -moz-scrollbars-vertical;
+        overflow-y: scroll;
+      }
+
+      *,
+      *:before,
+      *:after
+      {
+        box-sizing: inherit;
+      }
+
+      body
+      {
+        margin:0;
+        background: #fafafa;
+      }
+    </style>
+  </head>
+
+  <body>
+    <div id="swagger-ui"></div>
+
+    <script src="swagger-ui-bundle.js"> </script>
+    <script src="swagger-ui-standalone-preset.js"> </script>
+    <script>
+    window.onload = function() {
+
+      // Build a system
+      const ui = SwaggerUIBundle({
+        url: "./swagger.yaml",
+        dom_id: '#swagger-ui',
+        deepLinking: true,
+        presets: [
+          SwaggerUIBundle.presets.apis,
+          SwaggerUIStandalonePreset
+        ],
+        plugins: [
+          SwaggerUIBundle.plugins.DownloadUrl
+        ],
+        layout: "StandaloneLayout"
+      })
+
+      window.ui = ui
+    }
+  </script>
+  </body>
+</html>

client/docs/swagger-ui/oauth2-redirect.html

@@ -0,0 +1,67 @@
+<!doctype html>
+<html lang="en-US">
+<body onload="run()">
+</body>
+</html>
+<script>
+    'use strict';
+    function run () {
+        var oauth2 = window.opener.swaggerUIRedirectOauth2;
+        var sentState = oauth2.state;
+        var redirectUrl = oauth2.redirectUrl;
+        var isValid, qp, arr;
+
+        if (/code|token|error/.test(window.location.hash)) {
+            qp = window.location.hash.substring(1);
+        } else {
+            qp = location.search.substring(1);
+        }
+
+        arr = qp.split("&")
+        arr.forEach(function (v,i,_arr) { _arr[i] = '"' + v.replace('=', '":"') + '"';})
+        qp = qp ? JSON.parse('{' + arr.join() + '}',
+                function (key, value) {
+                    return key === "" ? value : decodeURIComponent(value)
+                }
+        ) : {}
+
+        isValid = qp.state === sentState
+
+        if ((
+          oauth2.auth.schema.get("flow") === "accessCode"||
+          oauth2.auth.schema.get("flow") === "authorizationCode"
+        ) && !oauth2.auth.code) {
+            if (!isValid) {
+                oauth2.errCb({
+                    authId: oauth2.auth.name,
+                    source: "auth",
+                    level: "warning",
+                    message: "Authorization may be unsafe, passed state was changed in server Passed state wasn't returned from auth server"
+                });
+            }
+
+            if (qp.code) {
+                delete oauth2.state;
+                oauth2.auth.code = qp.code;
+                oauth2.callback({auth: oauth2.auth, redirectUrl: redirectUrl});
+            } else {
+                let oauthErrorMsg
+                if (qp.error) {
+                    oauthErrorMsg = "["+qp.error+"]: " +
+                        (qp.error_description ? qp.error_description+ ". " : "no accessCode received from the server. ") +
+                        (qp.error_uri ? "More info: "+qp.error_uri : "");
+                }
+
+                oauth2.errCb({
+                    authId: oauth2.auth.name,
+                    source: "auth",
+                    level: "error",
+                    message: oauthErrorMsg || "[Authorization failed]: no accessCode received from the server"
+                });
+            }
+        } else {
+            oauth2.callback({auth: oauth2.auth, token: qp, isValid: isValid, redirectUrl: redirectUrl});
+        }
+        window.close();
+    }
+</script>

client/testnet.go

@@ -46,7 +46,7 @@ import (
 	chaintypes "github.com/cosmos/ethermint/types"
 	evmtypes "github.com/cosmos/ethermint/x/evm/types"
 
-	"github.com/cosmos/ethermint/cmd/injectived/config"
+	"github.com/cosmos/ethermint/cmd/ethermintd/config"
 	"github.com/cosmos/ethermint/crypto/ethsecp256k1"
 	"github.com/ethereum/go-ethereum/common"
 )
@@ -74,7 +74,7 @@ necessary files (private validator, genesis, config, etc.).
 
 Note, strict routability for addresses is turned off in the config file.`,
 
-		Example: "injectived testnet --v 4 --keyring-backend test --output-dir ./output --ip-addresses 192.168.10.2",
+		Example: "ethermintd testnet --v 4 --keyring-backend test --output-dir ./output --ip-addresses 192.168.10.2",
 		RunE: func(cmd *cobra.Command, _ []string) error {
 			clientCtx := client.GetClientContextFromCmd(cmd)
 
@@ -106,7 +106,7 @@ Note, strict routability for addresses is turned off in the config file.`,
 	cmd.Flags().Int(flagNumValidators, 4, "Number of validators to initialize the testnet with")
 	cmd.Flags().StringP(flagOutputDir, "o", "./mytestnet", "Directory to store initialization data for the testnet")
 	cmd.Flags().String(flagNodeDirPrefix, "node", "Prefix the directory name for each node with (node results in node0, node1, ...)")
-	cmd.Flags().String(flagNodeDaemonHome, "injectived", "Home directory of the node's daemon configuration")
+	cmd.Flags().String(flagNodeDaemonHome, "ethermintd", "Home directory of the node's daemon configuration")
 	cmd.Flags().StringSlice(flagIPAddrs, []string{"192.168.0.1"}, "List of IP addresses to use (i.e. `192.168.0.1,172.168.0.1` results in persistent peers list ID0@192.168.0.1:46656, ID1@172.168.0.1)")
 	cmd.Flags().String(flags.FlagChainID, "", "genesis file chain-id, if left blank will be randomly created")
 	cmd.Flags().String(server.FlagMinGasPrices, "", "Minimum gas prices to accept for transactions; All fees in a tx must meet this minimum (e.g. 0.01inj,0.001stake)")

cmd/ethermintd/config/config.go

@@ -0,0 +1,242 @@
+package config
+
+import (
+	"fmt"
+	"github.com/cosmos/cosmos-sdk/telemetry"
+	"strings"
+
+	"github.com/spf13/viper"
+
+	serverconfig "github.com/cosmos/cosmos-sdk/server/config"
+	storetypes "github.com/cosmos/cosmos-sdk/store/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+)
+
+const (
+	defaultMinGasPrices = ""
+
+	// DefaultGRPCAddress is the default address the gRPC server binds to.
+	DefaultGRPCAddress = "0.0.0.0:9900"
+
+	// DefaultEVMAddress is the default address the EVM JSON-RPC server binds to.
+	DefaultEVMAddress = "0.0.0.0:1317"
+
+	// DefaultEVMWSAddress is the default address the EVM WebSocket server binds to.
+	DefaultEVMWSAddress = "0.0.0.0:1318"
+)
+
+// BaseConfig defines the server's basic configuration
+type BaseConfig struct {
+	// The minimum gas prices a validator is willing to accept for processing a
+	// transaction. A transaction's fees must meet the minimum of any denomination
+	// specified in this config (e.g. 0.25token1;0.0001token2).
+	MinGasPrices string `mapstructure:"minimum-gas-prices"`
+
+	Pruning           string `mapstructure:"pruning"`
+	PruningKeepRecent string `mapstructure:"pruning-keep-recent"`
+	PruningKeepEvery  string `mapstructure:"pruning-keep-every"`
+	PruningInterval   string `mapstructure:"pruning-interval"`
+
+	// HaltHeight contains a non-zero block height at which a node will gracefully
+	// halt and shutdown that can be used to assist upgrades and testing.
+	//
+	// Note: Commitment of state will be attempted on the corresponding block.
+	HaltHeight uint64 `mapstructure:"halt-height"`
+
+	// HaltTime contains a non-zero minimum block time (in Unix seconds) at which
+	// a node will gracefully halt and shutdown that can be used to assist
+	// upgrades and testing.
+	//
+	// Note: Commitment of state will be attempted on the corresponding block.
+	HaltTime uint64 `mapstructure:"halt-time"`
+
+	// MinRetainBlocks defines the minimum block height offset from the current
+	// block being committed, such that blocks past this offset may be pruned
+	// from Tendermint. It is used as part of the process of determining the
+	// ResponseCommit.RetainHeight value during ABCI Commit. A value of 0 indicates
+	// that no blocks should be pruned.
+	//
+	// This configuration value is only responsible for pruning Tendermint blocks.
+	// It has no bearing on application state pruning which is determined by the
+	// "pruning-*" configurations.
+	//
+	// Note: Tendermint block pruning is dependant on this parameter in conunction
+	// with the unbonding (safety threshold) period, state pruning and state sync
+	// snapshot parameters to determine the correct minimum value of
+	// ResponseCommit.RetainHeight.
+	MinRetainBlocks uint64 `mapstructure:"min-retain-blocks"`
+
+	// InterBlockCache enables inter-block caching.
+	InterBlockCache bool `mapstructure:"inter-block-cache"`
+
+	// IndexEvents defines the set of events in the form {eventType}.{attributeKey},
+	// which informs Tendermint what to index. If empty, all events will be indexed.
+	IndexEvents []string `mapstructure:"index-events"`
+}
+
+// APIConfig defines the API listener configuration.
+type APIConfig = serverconfig.APIConfig
+
+// GRPCConfig defines configuration for the gRPC server.
+type GRPCConfig struct {
+	// Enable defines if the gRPC server should be enabled.
+	Enable bool `mapstructure:"enable"`
+
+	// Address defines the API server to listen on
+	Address string `mapstructure:"address"`
+}
+
+// EVMRPCConfig defines configuration for the EVM RPC server.
+type EVMRPCConfig struct {
+	// Enable defines if the EVM RPC server should be enabled.
+	Enable bool `mapstructure:"enable"`
+	// Address defines the HTTP server to listen on
+	RpcAddress string `mapstructure:"address"`
+	// Address defines the WebSocket server to listen on
+	WsAddress string `mapstructure:"ws-address"`
+}
+
+// StateSyncConfig defines the state sync snapshot configuration.
+type StateSyncConfig struct {
+	// SnapshotInterval sets the interval at which state sync snapshots are taken.
+	// 0 disables snapshots. Must be a multiple of PruningKeepEvery.
+	SnapshotInterval uint64 `mapstructure:"snapshot-interval"`
+
+	// SnapshotKeepRecent sets the number of recent state sync snapshots to keep.
+	// 0 keeps all snapshots.
+	SnapshotKeepRecent uint32 `mapstructure:"snapshot-keep-recent"`
+}
+
+// Config defines the server's top level configuration
+type Config struct {
+	BaseConfig `mapstructure:",squash"`
+
+	// Telemetry defines the application telemetry configuration
+	Telemetry telemetry.Config `mapstructure:"telemetry"`
+	API       APIConfig        `mapstructure:"api"`
+	GRPC      GRPCConfig       `mapstructure:"grpc"`
+	EVMRPC    EVMRPCConfig     `mapstructure:"evm-rpc"`
+	StateSync StateSyncConfig  `mapstructure:"state-sync"`
+}
+
+// SetMinGasPrices sets the validator's minimum gas prices.
+func (c *Config) SetMinGasPrices(gasPrices sdk.DecCoins) {
+	c.MinGasPrices = gasPrices.String()
+}
+
+// GetMinGasPrices returns the validator's minimum gas prices based on the set
+// configuration.
+func (c *Config) GetMinGasPrices() sdk.DecCoins {
+	if c.MinGasPrices == "" {
+		return sdk.DecCoins{}
+	}
+
+	gasPricesStr := strings.Split(c.MinGasPrices, ";")
+	gasPrices := make(sdk.DecCoins, len(gasPricesStr))
+
+	for i, s := range gasPricesStr {
+		gasPrice, err := sdk.ParseDecCoin(s)
+		if err != nil {
+			panic(fmt.Errorf("failed to parse minimum gas price coin (%s): %s", s, err))
+		}
+
+		gasPrices[i] = gasPrice
+	}
+
+	return gasPrices
+}
+
+// DefaultConfig returns server's default configuration.
+func DefaultConfig() *Config {
+
+	return &Config{
+		BaseConfig: BaseConfig{
+			MinGasPrices:      defaultMinGasPrices,
+			InterBlockCache:   true,
+			Pruning:           storetypes.PruningOptionNothing,
+			PruningKeepRecent: "0",
+			PruningKeepEvery:  "0",
+			PruningInterval:   "0",
+			MinRetainBlocks:   0,
+			IndexEvents:       make([]string, 0),
+		},
+		Telemetry: telemetry.Config{
+			Enabled:      false,
+			GlobalLabels: [][]string{},
+		},
+		API: APIConfig{
+			Enable:             true,
+			Swagger:            true,
+			Address:            "tcp://0.0.0.0:10337",
+			MaxOpenConnections: 1000,
+			RPCReadTimeout:     10,
+			RPCMaxBodyBytes:    1000000,
+		},
+		GRPC: GRPCConfig{
+			Enable:  true,
+			Address: DefaultGRPCAddress,
+		},
+		EVMRPC: EVMRPCConfig{
+			Enable:     true,
+			RpcAddress: DefaultEVMAddress,
+			WsAddress:  DefaultEVMWSAddress,
+		},
+		StateSync: StateSyncConfig{
+			SnapshotInterval:   0,
+			SnapshotKeepRecent: 2,
+		},
+	}
+}
+
+// GetConfig returns a fully parsed Config object.
+func GetConfig(v *viper.Viper) Config {
+	globalLabelsRaw := v.Get("telemetry.global-labels").([]interface{})
+	globalLabels := make([][]string, 0, len(globalLabelsRaw))
+
+	return Config{
+		BaseConfig: BaseConfig{
+			MinGasPrices:      v.GetString("minimum-gas-prices"),
+			InterBlockCache:   v.GetBool("inter-block-cache"),
+			Pruning:           v.GetString("pruning"),
+			PruningKeepRecent: v.GetString("pruning-keep-recent"),
+			PruningKeepEvery:  v.GetString("pruning-keep-every"),
+			PruningInterval:   v.GetString("pruning-interval"),
+			HaltHeight:        v.GetUint64("halt-height"),
+			HaltTime:          v.GetUint64("halt-time"),
+			IndexEvents:       v.GetStringSlice("index-events"),
+			MinRetainBlocks:   v.GetUint64("min-retain-blocks"),
+		},
+		Telemetry: telemetry.Config{
+			ServiceName:             v.GetString("telemetry.service-name"),
+			Enabled:                 v.GetBool("telemetry.enabled"),
+			EnableHostname:          v.GetBool("telemetry.enable-hostname"),
+			EnableHostnameLabel:     v.GetBool("telemetry.enable-hostname-label"),
+			EnableServiceLabel:      v.GetBool("telemetry.enable-service-label"),
+			PrometheusRetentionTime: v.GetInt64("telemetry.prometheus-retention-time"),
+			GlobalLabels:            globalLabels,
+		},
+		API: APIConfig{
+			Enable:             v.GetBool("api.enable"),
+			Swagger:            v.GetBool("api.swagger"),
+			Address:            v.GetString("api.address"),
+			MaxOpenConnections: v.GetUint("api.max-open-connections"),
+			RPCReadTimeout:     v.GetUint("api.rpc-read-timeout"),
+			RPCWriteTimeout:    v.GetUint("api.rpc-write-timeout"),
+			RPCMaxBodyBytes:    v.GetUint("api.rpc-max-body-bytes"),
+			EnableUnsafeCORS:   v.GetBool("api.enabled-unsafe-cors"),
+		},
+		GRPC: GRPCConfig{
+			Enable:  v.GetBool("grpc.enable"),
+			Address: v.GetString("grpc.address"),
+		},
+		EVMRPC: EVMRPCConfig{
+			Enable:     v.GetBool("evm-rpc.enable"),
+			RpcAddress: v.GetString("evm-rpc.address"),
+			WsAddress:  v.GetString("evm-rpc.ws-address"),
+		},
+		StateSync: StateSyncConfig{
+			SnapshotInterval:   v.GetUint64("state-sync.snapshot-interval"),
+			SnapshotKeepRecent: v.GetUint32("state-sync.snapshot-keep-recent"),
+		},
+	}
+}

cmd/ethermintd/config/config_test.go

@@ -0,0 +1,20 @@
+package config
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+)
+
+func TestDefaultConfig(t *testing.T) {
+	cfg := DefaultConfig()
+	require.True(t, cfg.GetMinGasPrices().IsZero())
+}
+
+func TestSetMinimumFees(t *testing.T) {
+	cfg := DefaultConfig()
+	cfg.SetMinGasPrices(sdk.DecCoins{sdk.NewInt64DecCoin("foo", 5)})
+	require.Equal(t, "5.000000000000000000foo", cfg.MinGasPrices)
+}

cmd/ethermintd/config/toml.go

@@ -0,0 +1,212 @@
+package config
+
+import (
+	"bytes"
+	"text/template"
+
+	"github.com/spf13/viper"
+	tmos "github.com/tendermint/tendermint/libs/os"
+)
+
+const defaultConfigTemplate = `# This is a TOML config file.
+# For more information, see https://github.com/toml-lang/toml
+
+###############################################################################
+###                           Base Configuration                            ###
+###############################################################################
+
+# The minimum gas prices a validator is willing to accept for processing a
+# transaction. A transaction's fees must meet the minimum of any denomination
+# specified in this config (e.g. 0.25token1;0.0001token2).
+minimum-gas-prices = "{{ .BaseConfig.MinGasPrices }}"
+
+# default: the last 100 states are kept in addition to every 500th state; pruning at 10 block intervals
+# nothing: all historic states will be saved, nothing will be deleted (i.e. archiving node)
+# everything: all saved states will be deleted, storing only the current state; pruning at 10 block intervals
+# custom: allow pruning options to be manually specified through 'pruning-keep-recent', 'pruning-keep-every', and 'pruning-interval'
+pruning = "{{ .BaseConfig.Pruning }}"
+
+# These are applied if and only if the pruning strategy is custom.
+pruning-keep-recent = "{{ .BaseConfig.PruningKeepRecent }}"
+pruning-keep-every = "{{ .BaseConfig.PruningKeepEvery }}"
+pruning-interval = "{{ .BaseConfig.PruningInterval }}"
+
+# HaltHeight contains a non-zero block height at which a node will gracefully
+# halt and shutdown that can be used to assist upgrades and testing.
+#
+# Note: Commitment of state will be attempted on the corresponding block.
+halt-height = {{ .BaseConfig.HaltHeight }}
+
+# HaltTime contains a non-zero minimum block time (in Unix seconds) at which
+# a node will gracefully halt and shutdown that can be used to assist upgrades
+# and testing.
+#
+# Note: Commitment of state will be attempted on the corresponding block.
+halt-time = {{ .BaseConfig.HaltTime }}
+
+# MinRetainBlocks defines the minimum block height offset from the current
+# block being committed, such that all blocks past this offset are pruned
+# from Tendermint. It is used as part of the process of determining the
+# ResponseCommit.RetainHeight value during ABCI Commit. A value of 0 indicates
+# that no blocks should be pruned.
+#
+# This configuration value is only responsible for pruning Tendermint blocks.
+# It has no bearing on application state pruning which is determined by the
+# "pruning-*" configurations.
+#
+# Note: Tendermint block pruning is dependant on this parameter in conunction
+# with the unbonding (safety threshold) period, state pruning and state sync
+# snapshot parameters to determine the correct minimum value of
+# ResponseCommit.RetainHeight.
+min-retain-blocks = {{ .BaseConfig.MinRetainBlocks }}
+
+# InterBlockCache enables inter-block caching.
+inter-block-cache = {{ .BaseConfig.InterBlockCache }}
+
+# IndexEvents defines the set of events in the form {eventType}.{attributeKey},
+# which informs Tendermint what to index. If empty, all events will be indexed.
+#
+# Example:
+# ["message.sender", "message.recipient"]
+index-events = {{ .BaseConfig.IndexEvents }}
+
+###############################################################################
+###                         Telemetry Configuration                         ###
+###############################################################################
+
+[telemetry]
+
+# Prefixed with keys to separate services.
+service-name = "{{ .Telemetry.ServiceName }}"
+
+# Enabled enables the application telemetry functionality. When enabled,
+# an in-memory sink is also enabled by default. Operators may also enabled
+# other sinks such as Prometheus.
+enabled = {{ .Telemetry.Enabled }}
+
+# Enable prefixing gauge values with hostname.
+enable-hostname = {{ .Telemetry.EnableHostname }}
+
+# Enable adding hostname to labels.
+enable-hostname-label = {{ .Telemetry.EnableHostnameLabel }}
+
+# Enable adding service to labels.
+enable-service-label = {{ .Telemetry.EnableServiceLabel }}
+
+# PrometheusRetentionTime, when positive, enables a Prometheus metrics sink.
+prometheus-retention-time = {{ .Telemetry.PrometheusRetentionTime }}
+
+# GlobalLabels defines a global set of name/value label tuples applied to all
+# metrics emitted using the wrapper functions defined in telemetry package.
+#
+# Example:
+# [["chain_id", "cosmoshub-1"]]
+global-labels = [{{ range $k, $v := .Telemetry.GlobalLabels }}
+  ["{{index $v 0 }}", "{{ index $v 1}}"],{{ end }}
+]
+
+###############################################################################
+###                           API Configuration                             ###
+###############################################################################
+
+[api]
+
+# Enable defines if the API server should be enabled.
+enable = {{ .API.Enable }}
+
+# Swagger defines if swagger documentation should automatically be registered.
+swagger = {{ .API.Swagger }}
+
+# Address defines the API server to listen on.
+address = "{{ .API.Address }}"
+
+# MaxOpenConnections defines the number of maximum open connections.
+max-open-connections = {{ .API.MaxOpenConnections }}
+
+# RPCReadTimeout defines the Tendermint RPC read timeout (in seconds).
+rpc-read-timeout = {{ .API.RPCReadTimeout }}
+
+# RPCWriteTimeout defines the Tendermint RPC write timeout (in seconds).
+rpc-write-timeout = {{ .API.RPCWriteTimeout }}
+
+# RPCMaxBodyBytes defines the Tendermint maximum response body (in bytes).
+rpc-max-body-bytes = {{ .API.RPCMaxBodyBytes }}
+
+# EnableUnsafeCORS defines if CORS should be enabled (unsafe - use it at your own risk).
+enabled-unsafe-cors = {{ .API.EnableUnsafeCORS }}
+
+###############################################################################
+###                           gRPC Configuration                            ###
+###############################################################################
+
+[grpc]
+
+# Enable defines if the gRPC server should be enabled.
+enable = {{ .GRPC.Enable }}
+
+# Address defines the gRPC server address to bind to.
+address = "{{ .GRPC.Address }}"
+
+###############################################################################
+###                           EVM RPC Configuration                         ###
+###############################################################################
+
+[evm-rpc]
+
+# Enable defines if the gRPC server should be enabled.
+enable = {{ .EVMRPC.Enable }}
+
+# Address defines the EVM RPC HTTP server address to bind to.
+address = "{{ .EVMRPC.RpcAddress }}"
+
+# Address defines the EVM WebSocket server address to bind to.
+ws-address = "{{ .EVMRPC.WsAddress }}"
+
+###############################################################################
+###                        State Sync Configuration                         ###
+###############################################################################
+
+# State sync snapshots allow other nodes to rapidly join the network without replaying historical
+# blocks, instead downloading and applying a snapshot of the application state at a given height.
+[state-sync]
+
+# snapshot-interval specifies the block interval at which local state sync snapshots are
+# taken (0 to disable). Must be a multiple of pruning-keep-every.
+snapshot-interval = {{ .StateSync.SnapshotInterval }}
+
+# snapshot-keep-recent specifies the number of recent snapshots to keep and serve (0 to keep all).
+snapshot-keep-recent = {{ .StateSync.SnapshotKeepRecent }}
+`
+
+var configTemplate *template.Template
+
+func init() {
+	var err error
+
+	tmpl := template.New("appConfigFileTemplate")
+
+	if configTemplate, err = tmpl.Parse(defaultConfigTemplate); err != nil {
+		panic(err)
+	}
+}
+
+// ParseConfig retrieves the default environment configuration for the
+// application.
+func ParseConfig(v *viper.Viper) (*Config, error) {
+	conf := DefaultConfig()
+	err := v.Unmarshal(conf)
+
+	return conf, err
+}
+
+// WriteConfigFile renders config using the template and writes it to
+// configFilePath.
+func WriteConfigFile(configFilePath string, config *Config) {
+	var buffer bytes.Buffer
+
+	if err := configTemplate.Execute(&buffer, config); err != nil {
+		panic(err)
+	}
+
+	tmos.MustWriteFile(configFilePath, buffer.Bytes(), 0644)
+}

cmd/ethermintd/flags.go

@@ -0,0 +1,90 @@
+package main
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/cosmos/cosmos-sdk/client/flags"
+	"github.com/cosmos/cosmos-sdk/crypto/keyring"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+
+	"github.com/cosmos/ethermint/version"
+)
+
+const (
+	flagLong     = "long"
+	flagLogLevel = "log_level"
+)
+
+func init() {
+	infoCmd.Flags().Bool(flagLong, false, "Print full information")
+}
+
+var (
+	infoCmd = &cobra.Command{
+		Use:   "info",
+		Short: "Print version info",
+		RunE: func(_ *cobra.Command, _ []string) error {
+			fmt.Println(version.Version())
+			return nil
+		},
+	}
+)
+
+var (
+	fromPassphrase  string
+	ethNodeWS       string
+	ethNodeHTTP     string
+	statsdEnabled   bool
+	statsdPrefix    string
+	statsdAddress   string
+	statsdStuckFunc string
+	evmDebug        bool
+	logJSON         bool
+	logLevel        string
+)
+
+// addTxFlags adds common flags for commands to post tx
+func addTxFlags(cmd *cobra.Command) *cobra.Command {
+	cmd.PersistentFlags().String(flags.FlagChainID, "testnet", "Specify Chain ID for sending Tx")
+	cmd.PersistentFlags().String(flags.FlagFrom, "", "Name or address of private key with which to sign")
+	cmd.PersistentFlags().StringVar(&fromPassphrase, "from-passphrase", "12345678", "Passphrase for private key specified with 'from'")
+	cmd.PersistentFlags().StringVar(&ethNodeWS, "eth-node-ws", "ws://localhost:1317", "WebSocket endpoint for an Ethereum node.")
+	cmd.PersistentFlags().StringVar(&ethNodeHTTP, "eth-node-http", "http://localhost:1317", "HTTP endpoint for an Ethereum node.")
+	cmd.PersistentFlags().BoolVar(&statsdEnabled, "statsd-enabled", false, "Enabled StatsD reporting.")
+	cmd.PersistentFlags().StringVar(&statsdPrefix, "statsd-prefix", "ethermintd", "Specify StatsD compatible metrics prefix.")
+	cmd.PersistentFlags().StringVar(&statsdAddress, "statsd-address", "localhost:8125", "UDP address of a StatsD compatible metrics aggregator.")
+	cmd.PersistentFlags().StringVar(&statsdStuckFunc, "statsd-stuck-func", "5m", "Sets a duration to consider a function to be stuck (e.g. in deadlock).")
+	cmd.PersistentFlags().String(flags.FlagFees, "", "Fees to pay along with transaction; eg: 10uatom")
+	cmd.PersistentFlags().String(flags.FlagGasPrices, "", "Gas prices to determine the transaction fee (e.g. 10uatom)")
+	cmd.PersistentFlags().String(flags.FlagNode, "tcp://localhost:26657", "<host>:<port> to tendermint rpc interface for this chain")
+	cmd.PersistentFlags().Float64(flags.FlagGasAdjustment, flags.DefaultGasAdjustment, "adjustment factor to be multiplied against the estimate returned by the tx simulation; if the gas limit is set manually this flag is ignored ")
+	cmd.PersistentFlags().StringP(flags.FlagBroadcastMode, "b", flags.BroadcastSync, "Transaction broadcasting mode (sync|async|block)")
+	cmd.PersistentFlags().BoolVar(&logJSON, "log-json", false, "Use JSON as the output format of the own logger (default: text)")
+	cmd.PersistentFlags().BoolVar(&evmDebug, "evm-debug", false, "Enable EVM debug traces")
+	cmd.PersistentFlags().StringVar(&logLevel, "log-level", "info", "Sets the level of the own logger (error, warn, info, debug)")
+	//cmd.PersistentFlags().Bool(flags.FlagTrustNode, true, "Trust connected full node (don't verify proofs for responses)")
+	cmd.PersistentFlags().String(flags.FlagKeyringBackend, keyring.BackendFile, "Select keyring's backend")
+
+	// --gas can accept integers and "simulate"
+	//cmd.PersistentFlags().Var(&flags.GasFlagVar, "gas", fmt.Sprintf(
+	//	"gas limit to set per-transaction; set to %q to calculate required gas automatically (default %d)",
+	//	flags.GasFlagAuto, flags.DefaultGasLimit,
+	//))
+
+	//viper.BindPFlag(flags.FlagTrustNode, cmd.Flags().Lookup(flags.FlagTrustNode))
+	viper.BindPFlag(flags.FlagNode, cmd.Flags().Lookup(flags.FlagNode))
+	viper.BindPFlag(flags.FlagKeyringBackend, cmd.Flags().Lookup(flags.FlagKeyringBackend))
+
+	cmd.MarkFlagRequired(flags.FlagChainID)
+	return cmd
+}
+
+func duration(s string, defaults time.Duration) time.Duration {
+	dur, err := time.ParseDuration(s)
+	if err != nil {
+		dur = defaults
+	}
+	return dur
+}

cmd/ethermintd/start.go

@@ -0,0 +1,467 @@
+package main
+
+import (
+	"context"
+	"io"
+	"net"
+	"net/http"
+	"os"
+	"path/filepath"
+	"runtime/pprof"
+	"time"
+
+	"github.com/gorilla/mux"
+	"github.com/improbable-eng/grpc-web/go/grpcweb"
+	"github.com/rs/cors"
+	"github.com/spf13/cobra"
+	"github.com/xlab/closer"
+	log "github.com/xlab/suplog"
+	"google.golang.org/grpc"
+
+	tcmd "github.com/tendermint/tendermint/cmd/tendermint/commands"
+	"github.com/tendermint/tendermint/node"
+	"github.com/tendermint/tendermint/p2p"
+	pvm "github.com/tendermint/tendermint/privval"
+	"github.com/tendermint/tendermint/proxy"
+	"github.com/tendermint/tendermint/rpc/client/local"
+	rpcclient "github.com/tendermint/tendermint/rpc/jsonrpc/client"
+	dbm "github.com/tendermint/tm-db"
+
+	"github.com/cosmos/cosmos-sdk/client"
+	"github.com/cosmos/cosmos-sdk/client/flags"
+	"github.com/cosmos/cosmos-sdk/server"
+	"github.com/cosmos/cosmos-sdk/server/api"
+	sdkconfig "github.com/cosmos/cosmos-sdk/server/config"
+	servergrpc "github.com/cosmos/cosmos-sdk/server/grpc"
+	"github.com/cosmos/cosmos-sdk/server/types"
+	storetypes "github.com/cosmos/cosmos-sdk/store/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+
+	ethrpc "github.com/ethereum/go-ethereum/rpc"
+
+	"github.com/cosmos/ethermint/cmd/ethermintd/config"
+	"github.com/cosmos/ethermint/ethereum/rpc"
+)
+
+// Tendermint full-node start flags
+const (
+	flagWithTendermint     = "with-tendermint"
+	flagAddress            = "address"
+	flagTransport          = "transport"
+	flagTraceStore         = "trace-store"
+	flagCPUProfile         = "cpu-profile"
+	FlagMinGasPrices       = "minimum-gas-prices"
+	FlagHaltHeight         = "halt-height"
+	FlagHaltTime           = "halt-time"
+	FlagInterBlockCache    = "inter-block-cache"
+	FlagUnsafeSkipUpgrades = "unsafe-skip-upgrades"
+	FlagTrace              = "trace"
+	FlagInvCheckPeriod     = "inv-check-period"
+
+	FlagPruning           = "pruning"
+	FlagPruningKeepRecent = "pruning-keep-recent"
+	FlagPruningKeepEvery  = "pruning-keep-every"
+	FlagPruningInterval   = "pruning-interval"
+	FlagIndexEvents       = "index-events"
+	FlagMinRetainBlocks   = "min-retain-blocks"
+)
+
+// GRPC-related flags.
+const (
+	flagGRPCEnable    = "grpc.enable"
+	flagGRPCAddress   = "grpc.address"
+	flagEVMRPCEnable  = "evm-rpc.enable"
+	flagEVMRPCAddress = "evm-rpc.address"
+	flagEVMWSAddress  = "evm-rpc.ws-address"
+)
+
+// State sync-related flags.
+const (
+	FlagStateSyncSnapshotInterval   = "state-sync.snapshot-interval"
+	FlagStateSyncSnapshotKeepRecent = "state-sync.snapshot-keep-recent"
+)
+
+// StartCmd runs the service passed in, either stand-alone or in-process with
+// Tendermint.
+func StartCmd(appCreator types.AppCreator, defaultNodeHome string) *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "start",
+		Short: "Run the full node",
+		Long: `Run the full node application with Tendermint in or out of process. By
+default, the application will run with Tendermint in process.
+
+Pruning options can be provided via the '--pruning' flag or alternatively with '--pruning-keep-recent',
+'pruning-keep-every', and 'pruning-interval' together.
+
+For '--pruning' the options are as follows:
+
+default: the last 100 states are kept in addition to every 500th state; pruning at 10 block intervals
+nothing: all historic states will be saved, nothing will be deleted (i.e. archiving node)
+everything: all saved states will be deleted, storing only the current state; pruning at 10 block intervals
+custom: allow pruning options to be manually specified through 'pruning-keep-recent', 'pruning-keep-every', and 'pruning-interval'
+
+Node halting configurations exist in the form of two flags: '--halt-height' and '--halt-time'. During
+the ABCI Commit phase, the node will check if the current block height is greater than or equal to
+the halt-height or if the current block time is greater than or equal to the halt-time. If so, the
+node will attempt to gracefully shutdown and the block will not be committed. In addition, the node
+will not be able to commit subsequent blocks.
+
+For profiling and benchmarking purposes, CPU profiling can be enabled via the '--cpu-profile' flag
+which accepts a path for the resulting pprof file.
+`,
+		PreRunE: func(cmd *cobra.Command, _ []string) error {
+			serverCtx := server.GetServerContextFromCmd(cmd)
+
+			// Bind flags to the Context's Viper so the app construction can set
+			// options accordingly.
+			serverCtx.Viper.BindPFlags(cmd.Flags())
+
+			_, err := server.GetPruningOptionsFromFlags(serverCtx.Viper)
+			return err
+		},
+		RunE: func(cmd *cobra.Command, _ []string) error {
+			serverCtx := server.GetServerContextFromCmd(cmd)
+			clientCtx := client.GetClientContextFromCmd(cmd)
+
+			serverCtx.Logger.Info("starting ABCI with Tendermint")
+
+			// amino is needed here for backwards compatibility of REST routes
+			err := startInProcess(serverCtx, clientCtx, appCreator)
+			return err
+		},
+	}
+
+	cmd.Flags().String(flags.FlagHome, defaultNodeHome, "The application home directory")
+	cmd.Flags().String(flagAddress, "tcp://0.0.0.0:26658", "Listen address")
+	cmd.Flags().String(flagTransport, "socket", "Transport protocol: socket, grpc")
+	cmd.Flags().String(flagTraceStore, "", "Enable KVStore tracing to an output file")
+	cmd.Flags().String(FlagMinGasPrices, "", "Minimum gas prices to accept for transactions; Any fee in a tx must meet this minimum (e.g. 0.01photino;0.0001stake)")
+	cmd.Flags().IntSlice(FlagUnsafeSkipUpgrades, []int{}, "Skip a set of upgrade heights to continue the old binary")
+	cmd.Flags().Uint64(FlagHaltHeight, 0, "Block height at which to gracefully halt the chain and shutdown the node")
+	cmd.Flags().Uint64(FlagHaltTime, 0, "Minimum block time (in Unix seconds) at which to gracefully halt the chain and shutdown the node")
+	cmd.Flags().Bool(FlagInterBlockCache, true, "Enable inter-block caching")
+	cmd.Flags().String(flagCPUProfile, "", "Enable CPU profiling and write to the provided file")
+	cmd.Flags().Bool(FlagTrace, false, "Provide full stack traces for errors in ABCI Log")
+	cmd.Flags().String(FlagPruning, storetypes.PruningOptionDefault, "Pruning strategy (default|nothing|everything|custom)")
+	cmd.Flags().Uint64(FlagPruningKeepRecent, 0, "Number of recent heights to keep on disk (ignored if pruning is not 'custom')")
+	cmd.Flags().Uint64(FlagPruningKeepEvery, 0, "Offset heights to keep on disk after 'keep-every' (ignored if pruning is not 'custom')")
+	cmd.Flags().Uint64(FlagPruningInterval, 0, "Height interval at which pruned heights are removed from disk (ignored if pruning is not 'custom')")
+	cmd.Flags().Uint(FlagInvCheckPeriod, 0, "Assert registered invariants every N blocks")
+	cmd.Flags().Uint64(FlagMinRetainBlocks, 0, "Minimum block height offset during ABCI commit to prune Tendermint blocks")
+
+	cmd.Flags().Bool(flagGRPCEnable, true, "Define if the gRPC server should be enabled")
+	cmd.Flags().String(flagGRPCAddress, config.DefaultGRPCAddress, "the gRPC server address to listen on")
+
+	cmd.Flags().Bool(flagEVMRPCEnable, true, "Define if the gRPC server should be enabled")
+	cmd.Flags().String(flagEVMRPCAddress, config.DefaultEVMAddress, "the EVM RPC server address to listen on")
+	cmd.Flags().String(flagEVMWSAddress, config.DefaultEVMWSAddress, "the EVM WS server address to listen on")
+
+	cmd.Flags().Uint64(FlagStateSyncSnapshotInterval, 0, "State sync snapshot interval")
+	cmd.Flags().Uint32(FlagStateSyncSnapshotKeepRecent, 2, "State sync snapshot to keep")
+
+	// add support for all Tendermint-specific command line options
+	tcmd.AddNodeFlags(cmd)
+	return cmd
+}
+
+func startInProcess(ctx *server.Context, clientCtx client.Context, appCreator types.AppCreator) error {
+	cfg := ctx.Config
+	home := cfg.RootDir
+
+	envName := "chain-" + ctx.Viper.GetString(flags.FlagChainID)
+	if env := os.Getenv("APP_ENV"); len(env) > 0 {
+		envName = env
+	}
+
+	if statsdEnabled {
+		hostname, _ := os.Hostname()
+		metrics.Init(statsdAddress, statsdPrefix, &metrics.StatterConfig{
+			EnvName:              envName,
+			HostName:             hostname,
+			StuckFunctionTimeout: duration(statsdStuckFunc, 5*time.Minute),
+			MockingEnabled:       false,
+		})
+		closer.Bind(func() {
+			metrics.Close()
+		})
+	}
+
+	traceWriterFile := ctx.Viper.GetString(flagTraceStore)
+	db, err := openDB(home)
+	if err != nil {
+		log.WithError(err).Errorln("failed to open DB")
+		return err
+	}
+
+	traceWriter, err := openTraceWriter(traceWriterFile)
+	if err != nil {
+		log.WithError(err).Errorln("failed to open trace writer")
+		return err
+	}
+
+	app := appCreator(ctx.Logger, db, traceWriter, ctx.Viper)
+
+	nodeKey, err := p2p.LoadOrGenNodeKey(cfg.NodeKeyFile())
+	if err != nil {
+		log.WithError(err).Errorln("failed load or gen node key")
+		return err
+	}
+
+	genDocProvider := node.DefaultGenesisDocProviderFunc(cfg)
+	tmNode, err := node.NewNode(
+		cfg,
+		pvm.LoadOrGenFilePV(cfg.PrivValidatorKeyFile(), cfg.PrivValidatorStateFile()),
+		nodeKey,
+		proxy.NewLocalClientCreator(app),
+		genDocProvider,
+		node.DefaultDBProvider,
+		node.DefaultMetricsProvider(cfg.Instrumentation),
+		ctx.Logger.With("module", "node"),
+	)
+	if err != nil {
+		log.WithError(err).Errorln("failed init node")
+		return err
+	}
+
+	if err := tmNode.Start(); err != nil {
+		log.WithError(err).Errorln("failed start tendermint server")
+		return err
+	}
+
+	genDoc, err := genDocProvider()
+	if err != nil {
+		return err
+	}
+
+	clientCtx = clientCtx.
+		WithHomeDir(home).
+		WithChainID(genDoc.ChainID).
+		WithClient(local.New(tmNode))
+
+	var apiSrv *api.Server
+	config := config.GetConfig(ctx.Viper)
+
+	var grpcSrv *grpc.Server
+	if config.GRPC.Enable {
+		grpcSrv, err = servergrpc.StartGRPCServer(app, config.GRPC.Address)
+		if err != nil {
+			log.WithError(err).Errorln("failed to boot GRPC server")
+		}
+	}
+
+	var httpSrv *http.Server
+	var httpSrvDone = make(chan struct{}, 1)
+	var wsSrv rpc.WebsocketsServer
+
+	if config.EVMRPC.Enable {
+		tmEndpoint := "/websocket"
+		tmRPCAddr := cfg.RPC.ListenAddress
+		log.Infoln("EVM RPC Connecting to Tendermint WebSocket at", tmRPCAddr+tmEndpoint)
+		tmWsClient := connectTmWS(tmRPCAddr, tmEndpoint)
+
+		rpcServer := ethrpc.NewServer()
+		apis := rpc.GetRPCAPIs(clientCtx, tmWsClient)
+
+		for _, api := range apis {
+			if err := rpcServer.RegisterName(api.Namespace, api.Service); err != nil {
+				log.WithFields(log.Fields{
+					"namespace": api.Namespace,
+					"service":   api.Service,
+				}).WithError(err).Fatalln("failed to register service in EVM RPC namespace")
+			}
+		}
+
+		r := mux.NewRouter()
+		r.HandleFunc("/", rpcServer.ServeHTTP).Methods("POST")
+		if grpcSrv != nil {
+			grpcWeb := grpcweb.WrapServer(grpcSrv)
+			mountGrpcWebServices(r, grpcWeb, grpcweb.ListGRPCResources(grpcSrv))
+		}
+
+		handlerWithCors := cors.New(cors.Options{
+			AllowedOrigins: []string{"*"},
+			AllowedMethods: []string{
+				http.MethodHead,
+				http.MethodGet,
+				http.MethodPost,
+				http.MethodPut,
+				http.MethodPatch,
+				http.MethodDelete,
+			},
+			AllowedHeaders:     []string{"*"},
+			AllowCredentials:   false,
+			OptionsPassthrough: false,
+		})
+
+		httpSrv = &http.Server{
+			Addr:    config.EVMRPC.RpcAddress,
+			Handler: handlerWithCors.Handler(r),
+		}
+
+		errCh := make(chan error)
+		go func() {
+			log.Infoln("Starting EVM RPC server on", config.EVMRPC.RpcAddress)
+			if err := httpSrv.ListenAndServe(); err != nil {
+				if err == http.ErrServerClosed {
+					close(httpSrvDone)
+					return
+				}
+
+				log.WithError(err).Errorln("failed to start EVM RPC server")
+				errCh <- err
+			}
+		}()
+
+		select {
+		case err := <-errCh:
+			log.WithError(err).Errorln("failed to boot EVM RPC server")
+			return err
+		case <-time.After(1 * time.Second): // assume EVM RPC server started successfully
+		}
+
+		log.Infoln("Starting EVM WebSocket server on", config.EVMRPC.WsAddress)
+		_, port, _ := net.SplitHostPort(config.EVMRPC.RpcAddress)
+
+		// allocate separate WS connection to Tendermint
+		tmWsClient = connectTmWS(tmRPCAddr, tmEndpoint)
+		wsSrv = rpc.NewWebsocketsServer(tmWsClient, "localhost:"+port, config.EVMRPC.WsAddress)
+		go wsSrv.Start()
+	}
+
+	sdkcfg := sdkconfig.GetConfig(ctx.Viper)
+	sdkcfg.API = config.API
+	if sdkcfg.API.Enable {
+		apiSrv = api.New(clientCtx, ctx.Logger.With("module", "api-server"))
+		app.RegisterAPIRoutes(apiSrv, sdkcfg.API)
+		errCh := make(chan error)
+
+		go func() {
+			if err := apiSrv.Start(sdkcfg); err != nil {
+				errCh <- err
+			}
+		}()
+
+		select {
+		case err := <-errCh:
+			log.WithError(err).Errorln("failed to boot API server")
+			return err
+		case <-time.After(5 * time.Second): // assume server started successfully
+		}
+	}
+
+	var cpuProfileCleanup func()
+
+	if cpuProfile := ctx.Viper.GetString(flagCPUProfile); cpuProfile != "" {
+		f, err := os.Create(cpuProfile)
+		if err != nil {
+			log.WithError(err).Errorln("failed to create CP profile")
+			return err
+		}
+
+		log.WithField("profile", cpuProfile).Infoln("starting CPU profiler")
+		if err := pprof.StartCPUProfile(f); err != nil {
+			return err
+		}
+
+		cpuProfileCleanup = func() {
+			log.WithField("profile", cpuProfile).Infoln("stopping CPU profiler")
+			pprof.StopCPUProfile()
+			f.Close()
+		}
+	}
+
+	closer.Bind(func() {
+		if tmNode.IsRunning() {
+			_ = tmNode.Stop()
+		}
+
+		if cpuProfileCleanup != nil {
+			cpuProfileCleanup()
+		}
+
+		if httpSrv != nil {
+			shutdownCtx, cancelFn := context.WithTimeout(context.Background(), 10*time.Second)
+			defer cancelFn()
+
+			if err := httpSrv.Shutdown(shutdownCtx); err != nil {
+				log.WithError(err).Warningln("HTTP server shutdown produced a warning")
+			} else {
+				log.Infoln("HTTP server shut down, waiting 5 sec")
+				select {
+				case <-time.Tick(5 * time.Second):
+				case <-httpSrvDone:
+				}
+			}
+		}
+
+		if grpcSrv != nil {
+			grpcSrv.Stop()
+		}
+
+		log.Infoln("Bye!")
+	})
+
+	closer.Hold()
+
+	return nil
+}
+
+func connectTmWS(tmRPCAddr, tmEndpoint string) *rpcclient.WSClient {
+	tmWsClient, err := rpcclient.NewWS(tmRPCAddr, tmEndpoint,
+		rpcclient.MaxReconnectAttempts(256),
+		rpcclient.ReadWait(120*time.Second),
+		rpcclient.WriteWait(120*time.Second),
+		rpcclient.PingPeriod(50*time.Second),
+		rpcclient.OnReconnect(func() {
+			log.WithField("tendermint_rpc", tmRPCAddr+tmEndpoint).
+				Debugln("EVM RPC reconnects to Tendermint WS")
+		}),
+	)
+
+	if err != nil {
+		log.WithError(err).Fatalln("Tendermint WS client could not be created for ", tmRPCAddr+tmEndpoint)
+	} else if err := tmWsClient.OnStart(); err != nil {
+		log.WithError(err).Fatalln("Tendermint WS client could not start for ", tmRPCAddr+tmEndpoint)
+	}
+
+	return tmWsClient
+}
+
+func mountGrpcWebServices(
+	router *mux.Router,
+	grpcWeb *grpcweb.WrappedGrpcServer,
+	grpcResources []string,
+) {
+	for _, res := range grpcResources {
+		log.Printf("[GRPC Web] HTTP POST mounted on %s", res)
+
+		s := router.Methods("POST").Subrouter()
+		s.HandleFunc(res, func(resp http.ResponseWriter, req *http.Request) {
+			if grpcWeb.IsGrpcWebSocketRequest(req) {
+				grpcWeb.HandleGrpcWebsocketRequest(resp, req)
+				return
+			}
+
+			if grpcWeb.IsGrpcWebRequest(req) {
+				grpcWeb.HandleGrpcWebRequest(resp, req)
+				return
+			}
+		})
+	}
+}
+
+func openDB(rootDir string) (dbm.DB, error) {
+	dataDir := filepath.Join(rootDir, "data")
+	return sdk.NewLevelDB("application", dataDir)
+}
+
+func openTraceWriter(traceWriterFile string) (w io.Writer, err error) {
+	if traceWriterFile == "" {
+		return
+	}
+	return os.OpenFile(
+		traceWriterFile,
+		os.O_WRONLY|os.O_APPEND|os.O_CREATE,
+		0666,
+	)
+}

ethereum/rpc/apis.go

@@ -0,0 +1,54 @@
+// Package rpc contains RPC handler methods and utilities to start
+// Ethermint's Web3-compatibly JSON-RPC server.
+package rpc
+
+import (
+	"github.com/cosmos/cosmos-sdk/client"
+	"github.com/cosmos/ethermint/ethereum/rpc/types"
+	"github.com/ethereum/go-ethereum/rpc"
+	rpcclient "github.com/tendermint/tendermint/rpc/jsonrpc/client"
+)
+
+// RPC namespaces and API version
+const (
+	Web3Namespace     = "web3"
+	EthNamespace      = "eth"
+	PersonalNamespace = "personal"
+	NetNamespace      = "net"
+
+	apiVersion = "1.0"
+)
+
+// GetRPCAPIs returns the list of all APIs
+func GetRPCAPIs(clientCtx client.Context, tmWSClient *rpcclient.WSClient) []rpc.API {
+	nonceLock := new(types.AddrLocker)
+	backend := NewEVMBackend(clientCtx)
+	ethAPI := NewPublicEthAPI(clientCtx, backend, nonceLock)
+
+	return []rpc.API{
+		{
+			Namespace: Web3Namespace,
+			Version:   apiVersion,
+			Service:   NewPublicWeb3API(),
+			Public:    true,
+		},
+		{
+			Namespace: EthNamespace,
+			Version:   apiVersion,
+			Service:   ethAPI,
+			Public:    true,
+		},
+		{
+			Namespace: EthNamespace,
+			Version:   apiVersion,
+			Service:   NewPublicFilterAPI(tmWSClient, backend),
+			Public:    true,
+		},
+		{
+			Namespace: NetNamespace,
+			Version:   apiVersion,
+			Service:   NewPublicNetAPI(clientCtx),
+			Public:    true,
+		},
+	}
+}

ethereum/rpc/backend.go

@@ -0,0 +1,338 @@
+package rpc
+
+import (
+	"context"
+	"math/big"
+	"regexp"
+
+	"github.com/cosmos/ethermint/ethereum/rpc/types"
+
+	"github.com/pkg/errors"
+	tmtypes "github.com/tendermint/tendermint/types"
+	log "github.com/xlab/suplog"
+
+	"github.com/cosmos/cosmos-sdk/client"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	ethtypes "github.com/ethereum/go-ethereum/core/types"
+
+	ethermint "github.com/cosmos/ethermint/types"
+	evmtypes "github.com/cosmos/ethermint/x/evm/types"
+)
+
+// Backend implements the functionality needed to filter changes.
+// Implemented by EVMBackend.
+type Backend interface {
+	// Used by block filter; also used for polling
+	BlockNumber() (hexutil.Uint64, error)
+	HeaderByNumber(blockNum types.BlockNumber) (*ethtypes.Header, error)
+	HeaderByHash(blockHash common.Hash) (*ethtypes.Header, error)
+	GetBlockByNumber(blockNum types.BlockNumber, fullTx bool) (map[string]interface{}, error)
+	GetBlockByHash(hash common.Hash, fullTx bool) (map[string]interface{}, error)
+
+	// returns the logs of a given block
+	GetLogs(blockHash common.Hash) ([][]*ethtypes.Log, error)
+
+	// Used by pending transaction filter
+	PendingTransactions() ([]*types.Transaction, error)
+
+	// Used by log filter
+	GetTransactionLogs(txHash common.Hash) ([]*ethtypes.Log, error)
+	BloomStatus() (uint64, uint64)
+}
+
+var _ Backend = (*EVMBackend)(nil)
+
+// implements the Backend interface
+type EVMBackend struct {
+	ctx         context.Context
+	clientCtx   client.Context
+	queryClient *types.QueryClient // gRPC query client
+	logger      log.Logger
+}
+
+func NewEVMBackend(clientCtx client.Context) *EVMBackend {
+	return &EVMBackend{
+		ctx:         context.Background(),
+		clientCtx:   clientCtx,
+		queryClient: types.NewQueryClient(clientCtx),
+		logger:      log.WithField("module", "evm-backend"),
+	}
+}
+
+// BlockNumber returns the current block number.
+func (e *EVMBackend) BlockNumber() (hexutil.Uint64, error) {
+	// NOTE: using 0 as min and max height returns the blockchain info up to the latest block.
+	info, err := e.clientCtx.Client.BlockchainInfo(e.ctx, 0, 0)
+	if err != nil {
+		return hexutil.Uint64(0), err
+	}
+
+	return hexutil.Uint64(info.LastHeight), nil
+}
+
+// GetBlockByNumber returns the block identified by number.
+func (e *EVMBackend) GetBlockByNumber(blockNum types.BlockNumber, fullTx bool) (map[string]interface{}, error) {
+	height := blockNum.Int64()
+	currentBlockNumber, _ := e.BlockNumber()
+
+	switch blockNum {
+	case types.EthLatestBlockNumber:
+		if currentBlockNumber > 0 {
+			height = int64(currentBlockNumber - 1)
+		}
+	case types.EthPendingBlockNumber:
+		if currentBlockNumber > 0 {
+			height = int64(currentBlockNumber)
+		}
+	case types.EthEarliestBlockNumber:
+		height = 1
+	default:
+		if blockNum < 0 {
+			err := errors.Errorf("incorrect block height: %d", height)
+			return nil, err
+		} else if height > int64(currentBlockNumber) {
+			return nil, nil
+		}
+	}
+
+	resBlock, err := e.clientCtx.Client.Block(e.ctx, &height)
+	if err != nil {
+		// e.logger.Debugf("GetBlockByNumber safely bumping down from %d to latest", height)
+		if resBlock, err = e.clientCtx.Client.Block(e.ctx, nil); err != nil {
+			e.logger.Warningln("GetBlockByNumber failed to get latest block")
+			return nil, nil
+		}
+	}
+
+	res, err := e.ethBlockFromTendermint(e.clientCtx, e.queryClient, resBlock.Block, fullTx)
+	if err != nil {
+		e.logger.WithError(err).Warningf("EthBlockFromTendermint failed with block %s", resBlock.Block.String())
+	}
+
+	return res, err
+}
+
+// GetBlockByHash returns the block identified by hash.
+func (e *EVMBackend) GetBlockByHash(hash common.Hash, fullTx bool) (map[string]interface{}, error) {
+	resBlock, err := e.clientCtx.Client.BlockByHash(e.ctx, hash.Bytes())
+	if err != nil {
+		e.logger.Warningf("BlockByHash failed for %s", hash.Hex())
+		return nil, err
+	}
+
+	return e.ethBlockFromTendermint(e.clientCtx, e.queryClient, resBlock.Block, fullTx)
+}
+
+// ethBlockFromTendermint returns a JSON-RPC compatible Ethereum block from a given Tendermint block.
+func (e *EVMBackend) ethBlockFromTendermint(
+	clientCtx client.Context,
+	queryClient evmtypes.QueryClient,
+	block *tmtypes.Block,
+	fullTx bool,
+) (map[string]interface{}, error) {
+	txReceiptsResp, err := queryClient.TxReceiptsByBlockHeight(types.ContextWithHeight(0), &evmtypes.QueryTxReceiptsByBlockHeightRequest{
+		Height: block.Height,
+	})
+	if err != nil {
+		e.logger.Warningf("TxReceiptsByBlockHeight fail: %s", err.Error())
+		return nil, err
+	}
+
+	gasUsed := big.NewInt(0)
+
+	ethRPCTxs := make([]interface{}, 0, len(txReceiptsResp.Receipts))
+	if !fullTx {
+		// simply hashes
+		for _, receipt := range txReceiptsResp.Receipts {
+			ethRPCTxs = append(ethRPCTxs, common.BytesToHash(receipt.Hash))
+		}
+	} else {
+		// full txns from receipts
+		for _, receipt := range txReceiptsResp.Receipts {
+			tx, err := NewTransactionFromData(
+				receipt.Data,
+				common.BytesToAddress(receipt.From),
+				common.BytesToHash(receipt.Hash),
+				common.BytesToHash(receipt.BlockHash),
+				receipt.BlockHeight,
+				receipt.Index,
+			)
+			if err != nil {
+				e.logger.Warningf("NewTransactionFromData fail: %s", err.Error())
+				continue
+			}
+
+			ethRPCTxs = append(ethRPCTxs, tx)
+			gasUsed.Add(gasUsed, new(big.Int).SetUint64(receipt.Result.GasUsed))
+		}
+	}
+
+	blockBloomResp, err := queryClient.BlockBloom(types.ContextWithHeight(0), &evmtypes.QueryBlockBloomRequest{
+		Height: block.Height,
+	})
+	if err != nil {
+		err = errors.Wrapf(err, "failed to query BlockBloom for height %d", block.Height)
+		return nil, err
+	}
+
+	bloom := ethtypes.BytesToBloom(blockBloomResp.Bloom)
+	formattedBlock := formatBlock(block.Header, block.Size(), ethermint.DefaultRPCGasLimit, gasUsed, ethRPCTxs, bloom)
+
+	return formattedBlock, nil
+}
+
+// HeaderByNumber returns the block header identified by height.
+func (e *EVMBackend) HeaderByNumber(blockNum types.BlockNumber) (*ethtypes.Header, error) {
+	height := blockNum.Int64()
+	currentBlockNumber, _ := e.BlockNumber()
+
+	switch blockNum {
+	case types.EthLatestBlockNumber:
+		if currentBlockNumber > 0 {
+			height = int64(currentBlockNumber - 1)
+		}
+	case types.EthPendingBlockNumber:
+		if currentBlockNumber > 0 {
+			height = int64(currentBlockNumber)
+		}
+	case types.EthEarliestBlockNumber:
+		height = 1
+	default:
+		if blockNum < 0 {
+			err := errors.Errorf("incorrect block height: %d", height)
+			return nil, err
+		}
+	}
+
+	resBlock, err := e.clientCtx.Client.Block(e.ctx, &height)
+	if err != nil {
+		e.logger.Warningf("HeaderByNumber failed")
+		return nil, err
+	}
+
+	req := &evmtypes.QueryBlockBloomRequest{
+		Height: resBlock.Block.Height,
+	}
+
+	res, err := e.queryClient.BlockBloom(types.ContextWithHeight(resBlock.Block.Height), req)
+	if err != nil {
+		e.logger.Warningf("HeaderByNumber BlockBloom fail %d", resBlock.Block.Height)
+		return nil, err
+	}
+
+	ethHeader := EthHeaderFromTendermint(resBlock.Block.Header)
+	ethHeader.Bloom = ethtypes.BytesToBloom(res.Bloom)
+	return ethHeader, nil
+}
+
+// HeaderByHash returns the block header identified by hash.
+func (e *EVMBackend) HeaderByHash(blockHash common.Hash) (*ethtypes.Header, error) {
+	resBlock, err := e.clientCtx.Client.BlockByHash(e.ctx, blockHash.Bytes())
+	if err != nil {
+		e.logger.Warningf("HeaderByHash fail")
+		return nil, err
+	}
+
+	req := &evmtypes.QueryBlockBloomRequest{
+		Height: resBlock.Block.Height,
+	}
+
+	res, err := e.queryClient.BlockBloom(types.ContextWithHeight(resBlock.Block.Height), req)
+	if err != nil {
+		e.logger.Warningf("HeaderByHash BlockBloom fail %d", resBlock.Block.Height)
+		return nil, err
+	}
+
+	ethHeader := EthHeaderFromTendermint(resBlock.Block.Header)
+	ethHeader.Bloom = ethtypes.BytesToBloom(res.Bloom)
+	return ethHeader, nil
+}
+
+// GetTransactionLogs returns the logs given a transaction hash.
+// It returns an error if there's an encoding error.
+// If no logs are found for the tx hash, the error is nil.
+func (e *EVMBackend) GetTransactionLogs(txHash common.Hash) ([]*ethtypes.Log, error) {
+	req := &evmtypes.QueryTxLogsRequest{
+		Hash: txHash.String(),
+	}
+
+	res, err := e.queryClient.TxLogs(e.ctx, req)
+	if err != nil {
+		e.logger.Warningf("TxLogs fail")
+		return nil, err
+	}
+
+	return evmtypes.LogsToEthereum(res.Logs), nil
+}
+
+// PendingTransactions returns the transactions that are in the transaction pool
+// and have a from address that is one of the accounts this node manages.
+func (e *EVMBackend) PendingTransactions() ([]*types.Transaction, error) {
+	return []*types.Transaction{}, nil
+}
+
+// GetLogs returns all the logs from all the ethereum transactions in a block.
+func (e *EVMBackend) GetLogs(blockHash common.Hash) ([][]*ethtypes.Log, error) {
+	// NOTE: we query the state in case the tx result logs are not persisted after an upgrade.
+	req := &evmtypes.QueryBlockLogsRequest{
+		Hash: blockHash.String(),
+	}
+
+	res, err := e.queryClient.BlockLogs(e.ctx, req)
+	if err != nil {
+		e.logger.Warningf("BlockLogs fail")
+		return nil, err
+	}
+
+	var blockLogs = [][]*ethtypes.Log{}
+	for _, txLog := range res.TxLogs {
+		blockLogs = append(blockLogs, txLog.EthLogs())
+	}
+
+	return blockLogs, nil
+}
+
+// This is very brittle, see: https://github.com/tendermint/tendermint/issues/4740
+var regexpMissingHeight = regexp.MustCompile(`height \d+ (must be less than or equal to|is not available)`)
+
+func (e *EVMBackend) GetLogsByNumber(blockNum types.BlockNumber) ([][]*ethtypes.Log, error) {
+	height := blockNum.Int64()
+	currentBlockNumber, _ := e.BlockNumber()
+
+	switch blockNum {
+	case types.EthLatestBlockNumber:
+		if currentBlockNumber > 0 {
+			height = int64(currentBlockNumber - 1)
+		}
+	case types.EthPendingBlockNumber:
+		if currentBlockNumber > 0 {
+			height = int64(currentBlockNumber)
+		}
+	case types.EthEarliestBlockNumber:
+		height = 1
+	default:
+		if blockNum < 0 {
+			err := errors.Errorf("incorrect block height: %d", height)
+			return nil, err
+		}
+	}
+
+	resBlock, err := e.clientCtx.Client.Block(e.ctx, &height)
+	if err != nil {
+		if regexpMissingHeight.MatchString(err.Error()) {
+			return [][]*ethtypes.Log{}, nil
+		}
+
+		e.logger.Warningf("failed to query block at %d", height)
+		return nil, err
+	}
+
+	return e.GetLogs(common.BytesToHash(resBlock.BlockID.Hash))
+}
+
+// BloomStatus returns the BloomBitsBlocks and the number of processed sections maintained
+// by the chain indexer.
+func (e *EVMBackend) BloomStatus() (uint64, uint64) {
+	return 4096, 0
+}

ethereum/rpc/eth_api.go

@@ -0,0 +1,760 @@
+package rpc
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"math/big"
+	"strings"
+	"sync"
+
+	"github.com/cosmos/ethermint/ethereum/rpc/types"
+	"github.com/gogo/protobuf/jsonpb"
+	abci "github.com/tendermint/tendermint/abci/types"
+
+	"github.com/pkg/errors"
+	log "github.com/xlab/suplog"
+
+	"github.com/cosmos/cosmos-sdk/client"
+	"github.com/cosmos/cosmos-sdk/client/flags"
+	codectypes "github.com/cosmos/cosmos-sdk/codec/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	authtx "github.com/cosmos/cosmos-sdk/x/auth/tx"
+	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
+	"github.com/tendermint/tendermint/crypto/tmhash"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	ethtypes "github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/rlp"
+
+	rpctypes "github.com/cosmos/ethermint/ethereum/rpc/types"
+	ethermint "github.com/cosmos/ethermint/types"
+	evmtypes "github.com/cosmos/ethermint/x/evm/types"
+)
+
+// PublicEthAPI is the eth_ prefixed set of APIs in the Web3 JSON-RPC spec.
+type PublicEthAPI struct {
+	ctx          context.Context
+	clientCtx    client.Context
+	queryClient  *types.QueryClient
+	chainIDEpoch *big.Int
+	logger       log.Logger
+	backend      Backend
+	nonceLock    *types.AddrLocker
+	keyringLock  sync.Mutex
+}
+
+// NewPublicEthAPI creates an instance of the public ETH Web3 API.
+func NewPublicEthAPI(
+	clientCtx client.Context,
+	backend Backend,
+	nonceLock *types.AddrLocker,
+) *PublicEthAPI {
+	epoch, err := ethermint.ParseChainID(clientCtx.ChainID)
+	if err != nil {
+		panic(err)
+	}
+
+	api := &PublicEthAPI{
+		ctx:          context.Background(),
+		clientCtx:    clientCtx,
+		queryClient:  types.NewQueryClient(clientCtx),
+		chainIDEpoch: epoch,
+		logger:       log.WithField("module", "json-rpc"),
+		backend:      backend,
+		nonceLock:    nonceLock,
+	}
+
+	return api
+}
+
+// ProtocolVersion returns the supported Ethereum protocol version.
+func (e *PublicEthAPI) ProtocolVersion() hexutil.Uint {
+	e.logger.Debugln("eth_protocolVersion")
+	return hexutil.Uint(evmtypes.ProtocolVersion)
+}
+
+// ChainId returns the chain's identifier in hex format
+func (e *PublicEthAPI) ChainId() (hexutil.Uint, error) { // nolint
+	e.logger.Debugln("eth_chainId")
+	return hexutil.Uint(uint(e.chainIDEpoch.Uint64())), nil
+}
+
+// Syncing returns whether or not the current node is syncing with other peers. Returns false if not, or a struct
+// outlining the state of the sync if it is.
+func (e *PublicEthAPI) Syncing() (interface{}, error) {
+	e.logger.Debugln("eth_syncing")
+
+	status, err := e.clientCtx.Client.Status(e.ctx)
+	if err != nil {
+		return false, err
+	}
+
+	if !status.SyncInfo.CatchingUp {
+		return false, nil
+	}
+
+	return map[string]interface{}{
+		// "startingBlock": nil, // NA
+		"currentBlock": hexutil.Uint64(status.SyncInfo.LatestBlockHeight),
+		// "highestBlock":  nil, // NA
+		// "pulledStates":  nil, // NA
+		// "knownStates":   nil, // NA
+	}, nil
+}
+
+// Coinbase is the address that staking rewards will be send to (alias for Etherbase).
+func (e *PublicEthAPI) Coinbase() (common.Address, error) {
+	e.logger.Debugln("eth_coinbase")
+
+	node, err := e.clientCtx.GetNode()
+	if err != nil {
+		return common.Address{}, err
+	}
+
+	status, err := node.Status(e.ctx)
+	if err != nil {
+		return common.Address{}, err
+	}
+
+	return common.BytesToAddress(status.ValidatorInfo.Address.Bytes()), nil
+}
+
+// Mining returns whether or not this node is currently mining. Always false.
+func (e *PublicEthAPI) Mining() bool {
+	e.logger.Debugln("eth_mining")
+	return false
+}
+
+// Hashrate returns the current node's hashrate. Always 0.
+func (e *PublicEthAPI) Hashrate() hexutil.Uint64 {
+	e.logger.Debugln("eth_hashrate")
+	return 0
+}
+
+// GasPrice returns the current gas price based on Ethermint's gas price oracle.
+func (e *PublicEthAPI) GasPrice() *hexutil.Big {
+	e.logger.Debugln("eth_gasPrice")
+	out := big.NewInt(0)
+	return (*hexutil.Big)(out)
+}
+
+// Accounts returns the list of accounts available to this node.
+func (e *PublicEthAPI) Accounts() ([]common.Address, error) {
+	e.logger.Debugln("eth_accounts")
+
+	return []common.Address{}, nil
+}
+
+// BlockNumber returns the current block number.
+func (e *PublicEthAPI) BlockNumber() (hexutil.Uint64, error) {
+	//e.logger.Debugln("eth_blockNumber")
+	return e.backend.BlockNumber()
+}
+
+// GetBalance returns the provided account's balance up to the provided block number.
+func (e *PublicEthAPI) GetBalance(address common.Address, blockNum types.BlockNumber) (*hexutil.Big, error) { // nolint: interfacer
+	e.logger.Debugln("eth_getBalance", "address", address.Hex(), "block number", blockNum)
+
+	req := &evmtypes.QueryBalanceRequest{
+		Address: address.String(),
+	}
+
+	res, err := e.queryClient.Balance(types.ContextWithHeight(blockNum.Int64()), req)
+	if err != nil {
+		return nil, err
+	}
+
+	val, err := ethermint.UnmarshalBigInt(res.Balance)
+	if err != nil {
+		return nil, err
+	}
+
+	return (*hexutil.Big)(val), nil
+}
+
+// GetStorageAt returns the contract storage at the given address, block number, and key.
+func (e *PublicEthAPI) GetStorageAt(address common.Address, key string, blockNum types.BlockNumber) (hexutil.Bytes, error) { // nolint: interfacer
+	e.logger.Debugln("eth_getStorageAt", "address", address.Hex(), "key", key, "block number", blockNum)
+
+	req := &evmtypes.QueryStorageRequest{
+		Address: address.String(),
+		Key:     key,
+	}
+
+	res, err := e.queryClient.Storage(types.ContextWithHeight(blockNum.Int64()), req)
+	if err != nil {
+		return nil, err
+	}
+
+	value := common.HexToHash(res.Value)
+	return value.Bytes(), nil
+}
+
+// GetTransactionCount returns the number of transactions at the given address up to the given block number.
+func (e *PublicEthAPI) GetTransactionCount(address common.Address, blockNum types.BlockNumber) (*hexutil.Uint64, error) {
+	e.logger.Debugln("eth_getTransactionCount", "address", address.Hex(), "block number", blockNum)
+
+	// Get nonce (sequence) from account
+	from := sdk.AccAddress(address.Bytes())
+	accRet := e.clientCtx.AccountRetriever
+
+	err := accRet.EnsureExists(e.clientCtx, from)
+	if err != nil {
+		// account doesn't exist yet, return 0
+		n := hexutil.Uint64(0)
+		return &n, nil
+	}
+
+	_, nonce, err := accRet.GetAccountNumberSequence(e.clientCtx, from)
+	if err != nil {
+		return nil, err
+	}
+
+	n := hexutil.Uint64(nonce)
+	return &n, nil
+}
+
+// GetBlockTransactionCountByHash returns the number of transactions in the block identified by hash.
+func (e *PublicEthAPI) GetBlockTransactionCountByHash(hash common.Hash) *hexutil.Uint {
+	e.logger.Debugln("eth_getBlockTransactionCountByHash", "hash", hash.Hex())
+
+	resBlock, err := e.clientCtx.Client.BlockByHash(e.ctx, hash.Bytes())
+	if err != nil {
+		return nil
+	}
+
+	n := hexutil.Uint(len(resBlock.Block.Txs))
+	return &n
+}
+
+// GetBlockTransactionCountByNumber returns the number of transactions in the block identified by number.
+func (e *PublicEthAPI) GetBlockTransactionCountByNumber(blockNum types.BlockNumber) *hexutil.Uint {
+	e.logger.Debugln("eth_getBlockTransactionCountByNumber", "block number", blockNum)
+	resBlock, err := e.clientCtx.Client.Block(e.ctx, blockNum.TmHeight())
+	if err != nil {
+		return nil
+	}
+
+	n := hexutil.Uint(len(resBlock.Block.Txs))
+	return &n
+}
+
+// GetUncleCountByBlockHash returns the number of uncles in the block identified by hash. Always zero.
+func (e *PublicEthAPI) GetUncleCountByBlockHash(hash common.Hash) hexutil.Uint {
+	return 0
+}
+
+// GetUncleCountByBlockNumber returns the number of uncles in the block identified by number. Always zero.
+func (e *PublicEthAPI) GetUncleCountByBlockNumber(blockNum types.BlockNumber) hexutil.Uint {
+	return 0
+}
+
+// GetCode returns the contract code at the given address and block number.
+func (e *PublicEthAPI) GetCode(address common.Address, blockNumber types.BlockNumber) (hexutil.Bytes, error) { // nolint: interfacer
+	e.logger.Debugln("eth_getCode", "address", address.Hex(), "block number", blockNumber)
+
+	req := &evmtypes.QueryCodeRequest{
+		Address: address.String(),
+	}
+
+	res, err := e.queryClient.Code(types.ContextWithHeight(blockNumber.Int64()), req)
+	if err != nil {
+		return nil, err
+	}
+
+	return res.Code, nil
+}
+
+// GetTransactionLogs returns the logs given a transaction hash.
+func (e *PublicEthAPI) GetTransactionLogs(txHash common.Hash) ([]*ethtypes.Log, error) {
+	e.logger.Debugln("eth_getTransactionLogs", "hash", txHash)
+	return e.backend.GetTransactionLogs(txHash)
+}
+
+// Sign signs the provided data using the private key of address via Geth's signature standard.
+func (e *PublicEthAPI) Sign(address common.Address, data hexutil.Bytes) (hexutil.Bytes, error) {
+	e.logger.Debugln("eth_sign", "address", address.Hex(), "data", common.Bytes2Hex(data))
+	return nil, errors.New("eth_sign not supported")
+}
+
+// SendTransaction sends an Ethereum transaction.
+func (e *PublicEthAPI) SendTransaction(args types.SendTxArgs) (common.Hash, error) {
+	e.logger.Debugln("eth_sendTransaction", "args", args)
+	return common.Hash{}, errors.New("eth_sendTransaction not supported")
+}
+
+// SendRawTransaction send a raw Ethereum transaction.
+func (e *PublicEthAPI) SendRawTransaction(data hexutil.Bytes) (common.Hash, error) {
+	e.logger.Debugln("eth_sendRawTransaction", "data_len", len(data))
+	ethereumTx := new(evmtypes.MsgEthereumTx)
+
+	// RLP decode raw transaction bytes
+	if err := rlp.DecodeBytes(data, ethereumTx); err != nil {
+		e.logger.WithError(err).Errorln("transaction RLP decode failed")
+
+		// Return nil is for when gasLimit overflows uint64
+		return common.Hash{}, err
+	}
+
+	builder, ok := e.clientCtx.TxConfig.NewTxBuilder().(authtx.ExtensionOptionsTxBuilder)
+	if !ok {
+		e.logger.Panicln("clientCtx.TxConfig.NewTxBuilder returns unsupported builder")
+	}
+
+	option, err := codectypes.NewAnyWithValue(&evmtypes.ExtensionOptionsEthereumTx{})
+	if err != nil {
+		e.logger.Panicln("codectypes.NewAnyWithValue failed to pack an obvious value")
+	}
+
+	builder.SetExtensionOptions(option)
+	err = builder.SetMsgs(ethereumTx.GetMsgs()...)
+	if err != nil {
+		e.logger.Panicln("builder.SetMsgs failed")
+	}
+
+	fees := sdk.NewCoins(ethermint.NewPhotonCoin(sdk.NewIntFromBigInt(ethereumTx.Fee())))
+	builder.SetFeeAmount(fees)
+	builder.SetGasLimit(ethereumTx.GetGas())
+
+	// Encode transaction by default Tx encoder
+	txBytes, err := e.clientCtx.TxConfig.TxEncoder()(builder.GetTx())
+	if err != nil {
+		e.logger.WithError(err).Errorln("failed to encode Eth tx using default encoder")
+		return common.Hash{}, err
+	}
+
+	txHash := common.BytesToHash(tmhash.Sum(txBytes))
+	asyncCtx := e.clientCtx.WithBroadcastMode(flags.BroadcastAsync)
+
+	if _, err := asyncCtx.BroadcastTx(txBytes); err != nil {
+		e.logger.WithError(err).Errorln("failed to broadcast Eth tx")
+		return txHash, err
+	}
+
+	return txHash, nil
+}
+
+// Call performs a raw contract call.
+func (e *PublicEthAPI) Call(args types.CallArgs, blockNr types.BlockNumber, _ *map[common.Address]types.Account) (hexutil.Bytes, error) {
+	//e.logger.Debugln("eth_call", "args", args, "block number", blockNr)
+	simRes, err := e.doCall(args, blockNr, big.NewInt(ethermint.DefaultRPCGasLimit))
+	if err != nil {
+		return []byte{}, err
+	} else if len(simRes.Result.Log) > 0 {
+		var logs []sdkTxLogs
+		if err := json.Unmarshal([]byte(simRes.Result.Log), &logs); err != nil {
+			e.logger.WithError(err).Errorln("failed to unmarshal simRes.Result.Log")
+		}
+
+		if len(logs) > 0 && logs[0].Log == logRevertedFlag {
+			data, err := evmtypes.DecodeTxResponse(simRes.Result.Data)
+			if err != nil {
+				e.logger.WithError(err).Warningln("call result decoding failed")
+				return []byte{}, err
+			}
+			return []byte{}, errRevertedWith(data.Ret)
+		}
+	}
+
+	data, err := evmtypes.DecodeTxResponse(simRes.Result.Data)
+	if err != nil {
+		e.logger.WithError(err).Warningln("call result decoding failed")
+		return []byte{}, err
+	}
+
+	return (hexutil.Bytes)(data.Ret), nil
+}
+
+var zeroAddr = common.HexToAddress("0x0000000000000000000000000000000000000000")
+
+// DoCall performs a simulated call operation through the evmtypes. It returns the
+// estimated gas used on the operation or an error if fails.
+func (e *PublicEthAPI) doCall(
+	args types.CallArgs, blockNr types.BlockNumber, globalGasCap *big.Int,
+) (*sdk.SimulationResponse, error) {
+	// Set default gas & gas price if none were set
+	// Change this to uint64(math.MaxUint64 / 2) if gas cap can be configured
+	gas := uint64(ethermint.DefaultRPCGasLimit)
+	if args.Gas != nil {
+		gas = uint64(*args.Gas)
+	}
+	if globalGasCap != nil && globalGasCap.Uint64() < gas {
+		e.logger.Debugln("Caller gas above allowance, capping", "requested", gas, "cap", globalGasCap)
+		gas = globalGasCap.Uint64()
+	}
+
+	// Set gas price using default or parameter if passed in
+	gasPrice := new(big.Int).SetUint64(ethermint.DefaultGasPrice)
+	if args.GasPrice != nil {
+		gasPrice = args.GasPrice.ToInt()
+	}
+
+	// Set value for transaction
+	value := new(big.Int)
+	if args.Value != nil {
+		value = args.Value.ToInt()
+	}
+
+	// Set Data if provided
+	var data []byte
+	if args.Data != nil {
+		data = []byte(*args.Data)
+	}
+
+	// Set destination address for call
+	var fromAddr sdk.AccAddress
+	if args.From != nil {
+		fromAddr = sdk.AccAddress(args.From.Bytes())
+	} else {
+		fromAddr = sdk.AccAddress(zeroAddr.Bytes())
+	}
+
+	_, seq, err := e.clientCtx.AccountRetriever.GetAccountNumberSequence(e.clientCtx, fromAddr)
+	if err != nil {
+		return nil, err
+	}
+
+	// Create new call message
+	msg := evmtypes.NewMsgEthereumTx(seq, args.To, value, gas, gasPrice, data)
+	if err := msg.ValidateBasic(); err != nil {
+		return nil, err
+	}
+
+	msg.From = &evmtypes.SigCache{
+		Address: fromAddr.Bytes(),
+	}
+	if err := msg.ValidateBasic(); err != nil {
+		return nil, err
+	}
+
+	// Create a TxBuilder
+	txBuilder, ok := e.clientCtx.TxConfig.NewTxBuilder().(authtx.ExtensionOptionsTxBuilder)
+	if !ok {
+		log.Panicln("clientCtx.TxConfig.NewTxBuilder returns unsupported builder")
+	}
+
+	option, err := codectypes.NewAnyWithValue(&evmtypes.ExtensionOptionsEthereumTx{})
+	if err != nil {
+		log.Panicln("codectypes.NewAnyWithValue failed to pack an obvious value")
+	}
+	txBuilder.SetExtensionOptions(option)
+
+	if err := txBuilder.SetMsgs(msg); err != nil {
+		log.Panicln("builder.SetMsgs failed")
+	}
+
+	fees := sdk.NewCoins(ethermint.NewPhotonCoin(sdk.NewIntFromBigInt(msg.Fee())))
+	txBuilder.SetFeeAmount(fees)
+	txBuilder.SetGasLimit(gas)
+
+	//doc about generate and transform tx into json, protobuf bytes
+	//https://github.com/cosmos/cosmos-sdk/blob/master/docs/run-node/txs.md
+	txBytes, err := e.clientCtx.TxConfig.TxEncoder()(txBuilder.GetTx())
+	if err != nil {
+		return nil, err
+	}
+
+	// simulate by calling ABCI Query
+	query := abci.RequestQuery{
+		Path:   "/app/simulate",
+		Data:   txBytes,
+		Height: blockNr.Int64(),
+	}
+
+	queryResult, err := e.clientCtx.QueryABCI(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var simResponse sdk.SimulationResponse
+	err = jsonpb.Unmarshal(strings.NewReader(string(queryResult.Value)), &simResponse)
+	if err != nil {
+		return nil, err
+	}
+
+	return &simResponse, nil
+}
+
+// EstimateGas returns an estimate of gas usage for the given smart contract call.
+// It adds 1,000 gas to the returned value instead of using the gas adjustment
+// param from the SDK.
+func (e *PublicEthAPI) EstimateGas(args types.CallArgs) (hexutil.Uint64, error) {
+	e.logger.Debugln("eth_estimateGas")
+
+	// From ContextWithHeight: if the provided height is 0,
+	// it will return an empty context and the gRPC query will use
+	// the latest block height for querying.
+	simRes, err := e.doCall(args, 0, big.NewInt(ethermint.DefaultRPCGasLimit))
+	if err != nil {
+		return 0, err
+	} else if len(simRes.Result.Log) > 0 {
+		var logs []sdkTxLogs
+		if err := json.Unmarshal([]byte(simRes.Result.Log), &logs); err != nil {
+			e.logger.WithError(err).Errorln("failed to unmarshal simRes.Result.Log")
+		}
+
+		if len(logs) > 0 && logs[0].Log == logRevertedFlag {
+			data, err := evmtypes.DecodeTxResponse(simRes.Result.Data)
+			if err != nil {
+				e.logger.WithError(err).Warningln("call result decoding failed")
+				return 0, err
+			}
+
+			return 0, errRevertedWith(data.Ret)
+		}
+	}
+
+	// TODO: change 1000 buffer for more accurate buffer (eg: SDK's gasAdjusted)
+	estimatedGas := simRes.GasInfo.GasUsed
+	gas := estimatedGas + 200000
+
+	return hexutil.Uint64(gas), nil
+}
+
+// GetBlockByHash returns the block identified by hash.
+func (e *PublicEthAPI) GetBlockByHash(hash common.Hash, fullTx bool) (map[string]interface{}, error) {
+	e.logger.Debugln("eth_getBlockByHash", "hash", hash.Hex(), "full", fullTx)
+	return e.backend.GetBlockByHash(hash, fullTx)
+}
+
+// GetBlockByNumber returns the block identified by number.
+func (e *PublicEthAPI) GetBlockByNumber(ethBlockNum types.BlockNumber, fullTx bool) (map[string]interface{}, error) {
+	// e.logger.Debugln("eth_getBlockByNumber", "number", ethBlockNum, "full", fullTx)
+	return e.backend.GetBlockByNumber(ethBlockNum, fullTx)
+}
+
+// GetTransactionByHash returns the transaction identified by hash.
+func (e *PublicEthAPI) GetTransactionByHash(hash common.Hash) (*types.Transaction, error) {
+	e.logger.Debugln("eth_getTransactionByHash", "hash", hash.Hex())
+
+	resp, err := e.queryClient.TxReceipt(e.ctx, &evmtypes.QueryTxReceiptRequest{
+		Hash: hash.Hex(),
+	})
+	if err != nil {
+		e.logger.Debugf("failed to get tx info for %s: %s", hash.Hex(), err.Error())
+		return nil, nil
+	}
+
+	return NewTransactionFromData(
+		resp.Receipt.Data,
+		common.BytesToAddress(resp.Receipt.From),
+		common.BytesToHash(resp.Receipt.Hash),
+		common.BytesToHash(resp.Receipt.BlockHash),
+		resp.Receipt.BlockHeight,
+		resp.Receipt.Index,
+	)
+}
+
+// GetTransactionByBlockHashAndIndex returns the transaction identified by hash and index.
+func (e *PublicEthAPI) GetTransactionByBlockHashAndIndex(hash common.Hash, idx hexutil.Uint) (*types.Transaction, error) {
+	e.logger.Debugln("eth_getTransactionByHashAndIndex", "hash", hash.Hex(), "index", idx)
+
+	resp, err := e.queryClient.TxReceiptsByBlockHash(e.ctx, &evmtypes.QueryTxReceiptsByBlockHashRequest{
+		Hash: hash.Hex(),
+	})
+	if err != nil {
+		err = errors.Wrap(err, "failed to query tx receipts by block hash")
+		return nil, err
+	}
+
+	return e.getReceiptByIndex(resp.Receipts, hash, idx)
+}
+
+// GetTransactionByBlockNumberAndIndex returns the transaction identified by number and index.
+func (e *PublicEthAPI) GetTransactionByBlockNumberAndIndex(blockNum types.BlockNumber, idx hexutil.Uint) (*types.Transaction, error) {
+	e.logger.Debugln("eth_getTransactionByBlockNumberAndIndex", "number", blockNum, "index", idx)
+
+	resp, err := e.queryClient.TxReceiptsByBlockHeight(e.ctx, &evmtypes.QueryTxReceiptsByBlockHeightRequest{
+		Height: blockNum.Int64(),
+	})
+	if err != nil {
+		err = errors.Wrap(err, "failed to query tx receipts by block height")
+		return nil, err
+	}
+
+	return e.getReceiptByIndex(resp.Receipts, common.Hash{}, idx)
+}
+
+func (e *PublicEthAPI) getReceiptByIndex(receipts []*evmtypes.TxReceipt, blockHash common.Hash, idx hexutil.Uint) (*types.Transaction, error) {
+	// return if index out of bounds
+	if uint64(idx) >= uint64(len(receipts)) {
+		return nil, nil
+	}
+
+	receipt := receipts[idx]
+
+	if (blockHash != common.Hash{}) {
+		if !bytes.Equal(receipt.BlockHash, blockHash.Bytes()) {
+			err := errors.Errorf("receipt found but block hashes don't match %s != %s",
+				common.Bytes2Hex(receipt.BlockHash),
+				blockHash.Hex(),
+			)
+
+			return nil, err
+		}
+	}
+
+	return NewTransactionFromData(
+		receipt.Data,
+		common.BytesToAddress(receipt.From),
+		common.BytesToHash(receipt.Hash),
+		blockHash,
+		receipt.BlockHeight,
+		uint64(idx),
+	)
+}
+
+// GetTransactionReceipt returns the transaction receipt identified by hash.
+func (e *PublicEthAPI) GetTransactionReceipt(hash common.Hash) (map[string]interface{}, error) {
+	e.logger.Debugln("eth_getTransactionReceipt", "hash", hash.Hex())
+
+	ctx := types.ContextWithHeight(int64(0))
+	tx, err := e.queryClient.TxReceipt(ctx, &evmtypes.QueryTxReceiptRequest{
+		Hash: hash.Hex(),
+	})
+	if err != nil {
+		e.logger.Debugf("failed to get tx receipt for %s: %s", hash.Hex(), err.Error())
+		return nil, nil
+	}
+
+	// Query block for consensus hash
+	height := int64(tx.Receipt.BlockHeight)
+	block, err := e.clientCtx.Client.Block(e.ctx, &height)
+	if err != nil {
+		e.logger.Warningln("didnt find block for tx height", height)
+		return nil, err
+	}
+
+	cumulativeGasUsed := uint64(tx.Receipt.Result.GasUsed)
+	if tx.Receipt.Index != 0 {
+		cumulativeGasUsed += rpctypes.GetBlockCumulativeGas(e.clientCtx, block.Block, int(tx.Receipt.Index))
+	}
+
+	var status hexutil.Uint
+	if tx.Receipt.Result.Reverted {
+		status = hexutil.Uint(0)
+	} else {
+		status = hexutil.Uint(1)
+	}
+
+	toHex := common.Address{}
+	if len(tx.Receipt.Data.Recipient) > 0 {
+		toHex = common.BytesToAddress(tx.Receipt.Data.Recipient)
+	}
+
+	contractAddress := common.HexToAddress(tx.Receipt.Result.ContractAddress)
+	logsBloom := hexutil.Encode(ethtypes.BytesToBloom(tx.Receipt.Result.Bloom).Bytes())
+	receipt := map[string]interface{}{
+		// Consensus fields: These fields are defined by the Yellow Paper
+		"status":            status,
+		"cumulativeGasUsed": hexutil.Uint64(cumulativeGasUsed),
+		"logsBloom":         logsBloom,
+		"logs":              tx.Receipt.Result.TxLogs.EthLogs(),
+
+		// Implementation fields: These fields are added by geth when processing a transaction.
+		// They are stored in the chain database.
+		"transactionHash": hash.Hex(),
+		"contractAddress": contractAddress.Hex(),
+		"gasUsed":         hexutil.Uint64(tx.Receipt.Result.GasUsed),
+
+		// Inclusion information: These fields provide information about the inclusion of the
+		// transaction corresponding to this receipt.
+		"blockHash":        common.BytesToHash(block.Block.Header.Hash()).Hex(),
+		"blockNumber":      hexutil.Uint64(tx.Receipt.BlockHeight),
+		"transactionIndex": hexutil.Uint64(tx.Receipt.Index),
+
+		// sender and receiver (contract or EOA) addreses
+		"from": common.BytesToAddress(tx.Receipt.From),
+		"to":   toHex,
+	}
+
+	return receipt, nil
+}
+
+// PendingTransactions returns the transactions that are in the transaction pool
+// and have a from address that is one of the accounts this node manages.
+func (e *PublicEthAPI) PendingTransactions() ([]*types.Transaction, error) {
+	e.logger.Debugln("eth_getPendingTransactions")
+	return e.backend.PendingTransactions()
+}
+
+// GetUncleByBlockHashAndIndex returns the uncle identified by hash and index. Always returns nil.
+func (e *PublicEthAPI) GetUncleByBlockHashAndIndex(hash common.Hash, idx hexutil.Uint) map[string]interface{} {
+	return nil
+}
+
+// GetUncleByBlockNumberAndIndex returns the uncle identified by number and index. Always returns nil.
+func (e *PublicEthAPI) GetUncleByBlockNumberAndIndex(number hexutil.Uint, idx hexutil.Uint) map[string]interface{} {
+	return nil
+}
+
+// GetProof returns an account object with proof and any storage proofs
+func (e *PublicEthAPI) GetProof(address common.Address, storageKeys []string, blockNumber types.BlockNumber) (*types.AccountResult, error) {
+	height := blockNumber.Int64()
+	e.logger.Debugln("eth_getProof", "address", address.Hex(), "keys", storageKeys, "number", height)
+
+	ctx := types.ContextWithHeight(height)
+	clientCtx := e.clientCtx.WithHeight(height)
+
+	// query storage proofs
+	storageProofs := make([]types.StorageResult, len(storageKeys))
+	for i, key := range storageKeys {
+		hexKey := common.HexToHash(key)
+		valueBz, proof, err := e.queryClient.GetProof(clientCtx, evmtypes.StoreKey, evmtypes.StateKey(address, hexKey.Bytes()))
+		if err != nil {
+			return nil, err
+		}
+
+		// check for proof
+		var proofStr string
+		if proof != nil {
+			proofStr = proof.String()
+		}
+
+		storageProofs[i] = types.StorageResult{
+			Key:   key,
+			Value: (*hexutil.Big)(new(big.Int).SetBytes(valueBz)),
+			Proof: []string{proofStr},
+		}
+	}
+
+	// query EVM account
+	req := &evmtypes.QueryAccountRequest{
+		Address: address.String(),
+	}
+
+	res, err := e.queryClient.Account(ctx, req)
+	if err != nil {
+		return nil, err
+	}
+
+	// query account proofs
+	accountKey := authtypes.AddressStoreKey(sdk.AccAddress(address.Bytes()))
+	_, proof, err := e.queryClient.GetProof(clientCtx, authtypes.StoreKey, accountKey)
+	if err != nil {
+		return nil, err
+	}
+
+	// check for proof
+	var accProofStr string
+	if proof != nil {
+		accProofStr = proof.String()
+	}
+
+	balance, err := ethermint.UnmarshalBigInt(res.Balance)
+	if err != nil {
+		return nil, err
+	}
+
+	return &types.AccountResult{
+		Address:      address,
+		AccountProof: []string{accProofStr},
+		Balance:      (*hexutil.Big)(balance),
+		CodeHash:     common.BytesToHash(res.CodeHash),
+		Nonce:        hexutil.Uint64(res.Nonce),
+		StorageHash:  common.Hash{}, // NOTE: Ethermint doesn't have a storage hash. TODO: implement?
+		StorageProof: storageProofs,
+	}, nil
+}

ethereum/rpc/filter_api.go

@@ -1,4 +1,4 @@
-package filters
+package rpc
 
 import (
 	"context"
@@ -6,9 +6,12 @@ import (
 	"sync"
 	"time"
 
-	"github.com/gogo/protobuf/proto"
+	"github.com/cosmos/ethermint/ethereum/rpc/types"
+
+	log "github.com/xlab/suplog"
 
 	coretypes "github.com/tendermint/tendermint/rpc/core/types"
+	rpcclient "github.com/tendermint/tendermint/rpc/jsonrpc/client"
 	tmtypes "github.com/tendermint/tendermint/types"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -16,18 +19,16 @@ import (
 	"github.com/ethereum/go-ethereum/eth/filters"
 	"github.com/ethereum/go-ethereum/rpc"
 
-	"github.com/cosmos/cosmos-sdk/client"
-
-	rpctypes "github.com/cosmos/ethermint/rpc/types"
 	evmtypes "github.com/cosmos/ethermint/x/evm/types"
 )
 
-// Backend defines the methods requided by the PublicFilterAPI backend
-type Backend interface {
-	GetBlockByNumber(blockNum rpctypes.BlockNumber, fullTx bool) (map[string]interface{}, error)
-	HeaderByNumber(blockNr rpctypes.BlockNumber) (*ethtypes.Header, error)
+// FiltersBackend defines the methods requided by the PublicFilterAPI backend
+type FiltersBackend interface {
+	GetBlockByNumber(blockNum types.BlockNumber, fullTx bool) (map[string]interface{}, error)
+	HeaderByNumber(blockNum types.BlockNumber) (*ethtypes.Header, error)
 	HeaderByHash(blockHash common.Hash) (*ethtypes.Header, error)
 	GetLogs(blockHash common.Hash) ([][]*ethtypes.Log, error)
+	GetLogsByNumber(blockNum types.BlockNumber) ([][]*ethtypes.Log, error)
 
 	GetTransactionLogs(txHash common.Hash) ([]*ethtypes.Log, error)
 	BloomStatus() (uint64, uint64)
@@ -50,20 +51,18 @@ type filter struct {
 // PublicFilterAPI offers support to create and manage filters. This will allow external clients to retrieve various
 // information related to the Ethereum protocol such as blocks, transactions and logs.
 type PublicFilterAPI struct {
-	clientCtx client.Context
-	backend   Backend
+	backend   FiltersBackend
 	events    *EventSystem
 	filtersMu sync.Mutex
 	filters   map[rpc.ID]*filter
 }
 
-// NewAPI returns a new PublicFilterAPI instance.
-func NewAPI(clientCtx client.Context, backend Backend) *PublicFilterAPI {
+// NewPublicFilterAPI returns a new PublicFilterAPI instance.
+func NewPublicFilterAPI(tmWSClient *rpcclient.WSClient, backend FiltersBackend) *PublicFilterAPI {
 	api := &PublicFilterAPI{
-		clientCtx: clientCtx,
-		backend:   backend,
-		filters:   make(map[rpc.ID]*filter),
-		events:    NewEventSystem(clientCtx.Client),
+		backend: backend,
+		filters: make(map[rpc.ID]*filter),
+		events:  NewEventSystem(tmWSClient),
 	}
 
 	go api.timeoutLoop()
@@ -116,8 +115,22 @@ func (api *PublicFilterAPI) NewPendingTransactionFilter() rpc.ID {
 
 		for {
 			select {
-			case ev := <-txsCh:
-				data, _ := ev.Data.(tmtypes.EventDataTx)
+			case ev, ok := <-txsCh:
+				if !ok {
+					api.filtersMu.Lock()
+					delete(api.filters, pendingTxSub.ID())
+					api.filtersMu.Unlock()
+					return
+				}
+
+				data, ok := ev.Data.(tmtypes.EventDataTx)
+				if !ok {
+					log.WithFields(log.Fields{
+						"expected": "tmtypes.EventDataTx",
+						"actual":   fmt.Sprintf("%T", ev.Data),
+					}).Warningln("event Data type mismatch")
+					continue
+				}
 
 				txHash := common.BytesToHash(tmtypes.Tx(data.Tx).Hash())
 
@@ -162,8 +175,23 @@ func (api *PublicFilterAPI) NewPendingTransactions(ctx context.Context) (*rpc.Su
 
 		for {
 			select {
-			case ev := <-txsCh:
-				data, _ := ev.Data.(tmtypes.EventDataTx)
+			case ev, ok := <-txsCh:
+				if !ok {
+					api.filtersMu.Lock()
+					delete(api.filters, pendingTxSub.ID())
+					api.filtersMu.Unlock()
+					return
+				}
+
+				data, ok := ev.Data.(tmtypes.EventDataTx)
+				if !ok {
+					log.WithFields(log.Fields{
+						"expected": "tmtypes.EventDataTx",
+						"actual":   fmt.Sprintf("%T", ev.Data),
+					}).Warningln("event Data type mismatch")
+					continue
+				}
+
 				txHash := common.BytesToHash(tmtypes.Tx(data.Tx).Hash())
 
 				// To keep the original behaviour, send a single tx hash in one notification.
@@ -205,9 +233,24 @@ func (api *PublicFilterAPI) NewBlockFilter() rpc.ID {
 
 		for {
 			select {
-			case ev := <-headersCh:
-				data, _ := ev.Data.(tmtypes.EventDataNewBlockHeader)
-				header := rpctypes.EthHeaderFromTendermint(data.Header)
+			case ev, ok := <-headersCh:
+				if !ok {
+					api.filtersMu.Lock()
+					delete(api.filters, headerSub.ID())
+					api.filtersMu.Unlock()
+					return
+				}
+
+				data, ok := ev.Data.(tmtypes.EventDataNewBlockHeader)
+				if !ok {
+					log.WithFields(log.Fields{
+						"expected": "tmtypes.EventDataNewBlockHeader",
+						"actual":   fmt.Sprintf("%T", ev.Data),
+					}).Warningln("event Data type mismatch")
+					continue
+				}
+
+				header := EthHeaderFromTendermint(data.Header)
 				api.filtersMu.Lock()
 				if f, found := api.filters[headerSub.ID()]; found {
 					f.hashes = append(f.hashes, header.Hash())
@@ -245,15 +288,22 @@ func (api *PublicFilterAPI) NewHeads(ctx context.Context) (*rpc.Subscription, er
 
 		for {
 			select {
-			case ev := <-headersCh:
-				data, ok := ev.Data.(tmtypes.EventDataNewBlockHeader)
+			case ev, ok := <-headersCh:
 				if !ok {
-					err = fmt.Errorf("invalid event data %T, expected %s", ev.Data, tmtypes.EventNewBlockHeader)
-					headersSub.err <- err
+					headersSub.Unsubscribe(api.events)
 					return
 				}
 
-				header := rpctypes.EthHeaderFromTendermint(data.Header)
+				data, ok := ev.Data.(tmtypes.EventDataNewBlockHeader)
+				if !ok {
+					log.WithFields(log.Fields{
+						"expected": "tmtypes.EventDataNewBlockHeader",
+						"actual":   fmt.Sprintf("%T", ev.Data),
+					}).Warningln("event Data type mismatch")
+					continue
+				}
+
+				header := EthHeaderFromTendermint(data.Header)
 				err = notifier.Notify(rpcSub.ID, header)
 				if err != nil {
 					headersSub.err <- err
@@ -292,9 +342,14 @@ func (api *PublicFilterAPI) Logs(ctx context.Context, crit filters.FilterCriteri
 
 		for {
 			select {
-			case event := <-logsCh:
+			case ev, ok := <-logsCh:
+				if !ok {
+					logsSub.Unsubscribe(api.events)
+					return
+				}
+
 				// filter only events from EVM module txs
-				_, isMsgEthereumTx := event.Events[evmtypes.TypeMsgEthereumTx]
+				_, isMsgEthereumTx := ev.Events[evmtypes.TypeMsgEthereumTx]
 
 				if !isMsgEthereumTx {
 					// ignore transaction as it's not from the evm module
@@ -302,20 +357,21 @@ func (api *PublicFilterAPI) Logs(ctx context.Context, crit filters.FilterCriteri
 				}
 
 				// get transaction result data
-				dataTx, ok := event.Data.(tmtypes.EventDataTx)
+				dataTx, ok := ev.Data.(tmtypes.EventDataTx)
 				if !ok {
-					err = fmt.Errorf("invalid event data %T, expected %s", event.Data, tmtypes.EventTx)
-					logsSub.err <- err
-					return
+					log.WithFields(log.Fields{
+						"expected": "tmtypes.EventDataTx",
+						"actual":   fmt.Sprintf("%T", ev.Data),
+					}).Warningln("event Data type mismatch")
+					continue
 				}
 
-				var txResponse evmtypes.MsgEthereumTxResponse
-				err := proto.Unmarshal(dataTx.TxResult.Result.Data, &txResponse)
+				txResponse, err := evmtypes.DecodeTxResponse(dataTx.TxResult.Result.Data)
 				if err != nil {
 					return
 				}
 
-				logs := FilterLogs(txResponse.TxLogs.EthLogs(), crit.FromBlock, crit.ToBlock, crit.Addresses, crit.Topics)
+				logs := filterLogs(txResponse.TxLogs.EthLogs(), crit.FromBlock, crit.ToBlock, crit.Addresses, crit.Topics)
 
 				for _, log := range logs {
 					err = notifier.Notify(rpcSub.ID, log)
@@ -371,19 +427,28 @@ func (api *PublicFilterAPI) NewFilter(criteria filters.FilterCriteria) (rpc.ID,
 
 		for {
 			select {
-			case event := <-eventCh:
-				dataTx, ok := event.Data.(tmtypes.EventDataTx)
+			case ev, ok := <-eventCh:
 				if !ok {
-					err = fmt.Errorf("invalid event data %T, expected EventDataTx", event.Data)
+					api.filtersMu.Lock()
+					delete(api.filters, filterID)
+					api.filtersMu.Unlock()
 					return
 				}
+				dataTx, ok := ev.Data.(tmtypes.EventDataTx)
+				if !ok {
+					log.WithFields(log.Fields{
+						"expected": "tmtypes.EventDataTx",
+						"actual":   fmt.Sprintf("%T", ev.Data),
+					}).Warningln("event Data type mismatch")
+					continue
+				}
 
 				txResponse, err := evmtypes.DecodeTxResponse(dataTx.TxResult.Result.Data)
 				if err != nil {
 					return
 				}
 
-				logs := FilterLogs(txResponse.TxLogs.EthLogs(), criteria.FromBlock, criteria.ToBlock, criteria.Addresses, criteria.Topics)
+				logs := filterLogs(txResponse.TxLogs.EthLogs(), criteria.FromBlock, criteria.ToBlock, criteria.Addresses, criteria.Topics)
 
 				api.filtersMu.Lock()
 				if f, found := api.filters[filterID]; found {
@@ -404,7 +469,7 @@ func (api *PublicFilterAPI) NewFilter(criteria filters.FilterCriteria) (rpc.ID,
 
 // GetLogs returns logs matching the given argument that are stored within the state.
 //
-// https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_getLogs
+// https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_getlogs
 func (api *PublicFilterAPI) GetLogs(ctx context.Context, crit filters.FilterCriteria) ([]*ethtypes.Log, error) {
 	var filter *Filter
 	if crit.BlockHash != nil {
@@ -430,7 +495,7 @@ func (api *PublicFilterAPI) GetLogs(ctx context.Context, crit filters.FilterCrit
 		return nil, err
 	}
 
-	return returnLogs(logs), nil
+	return returnLogs(logs), err
 }
 
 // UninstallFilter removes the filter with the given filter id.
@@ -530,3 +595,21 @@ func (api *PublicFilterAPI) GetFilterChanges(id rpc.ID) (interface{}, error) {
 		return nil, fmt.Errorf("invalid filter %s type %d", id, f.typ)
 	}
 }
+
+// returnHashes is a helper that will return an empty hash array case the given hash array is nil,
+// otherwise the given hashes array is returned.
+func returnHashes(hashes []common.Hash) []common.Hash {
+	if hashes == nil {
+		return []common.Hash{}
+	}
+	return hashes
+}
+
+// returnLogs is a helper that will return an empty log array in case the given logs array is nil,
+// otherwise the given logs array is returned.
+func returnLogs(logs []*ethtypes.Log) []*ethtypes.Log {
+	if logs == nil {
+		return []*ethtypes.Log{}
+	}
+	return logs
+}

ethereum/rpc/filter_system.go

@@ -0,0 +1,345 @@
+package rpc
+
+import (
+	"context"
+	"fmt"
+	"sync"
+	"time"
+
+	"github.com/pkg/errors"
+	log "github.com/xlab/suplog"
+
+	tmjson "github.com/tendermint/tendermint/libs/json"
+	tmquery "github.com/tendermint/tendermint/libs/pubsub/query"
+	coretypes "github.com/tendermint/tendermint/rpc/core/types"
+	rpcclient "github.com/tendermint/tendermint/rpc/jsonrpc/client"
+	tmtypes "github.com/tendermint/tendermint/types"
+
+	"github.com/ethereum/go-ethereum/common"
+	ethtypes "github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/eth/filters"
+	"github.com/ethereum/go-ethereum/rpc"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+
+	"github.com/cosmos/ethermint/ethereum/rpc/pubsub"
+	evmtypes "github.com/cosmos/ethermint/x/evm/types"
+)
+
+var (
+	txEvents     = tmtypes.QueryForEvent(tmtypes.EventTx).String()
+	evmEvents    = tmquery.MustParse(fmt.Sprintf("%s='%s' AND %s.%s='%s'", tmtypes.EventTypeKey, tmtypes.EventTx, sdk.EventTypeMessage, sdk.AttributeKeyModule, evmtypes.ModuleName)).String()
+	headerEvents = tmtypes.QueryForEvent(tmtypes.EventNewBlockHeader).String()
+)
+
+// EventSystem creates subscriptions, processes events and broadcasts them to the
+// subscription which match the subscription criteria using the Tendermint's RPC client.
+type EventSystem struct {
+	ctx        context.Context
+	tmWSClient *rpcclient.WSClient
+
+	// light client mode
+	lightMode bool
+
+	index      filterIndex
+	topicChans map[string]chan<- coretypes.ResultEvent
+	indexMux   *sync.RWMutex
+
+	// Channels
+	install   chan *Subscription // install filter for event notification
+	uninstall chan *Subscription // remove filter for event notification
+	eventBus  pubsub.EventBus
+}
+
+// NewEventSystem creates a new manager that listens for event on the given mux,
+// parses and filters them. It uses the all map to retrieve filter changes. The
+// work loop holds its own index that is used to forward events to filters.
+//
+// The returned manager has a loop that needs to be stopped with the Stop function
+// or by stopping the given mux.
+func NewEventSystem(tmWSClient *rpcclient.WSClient) *EventSystem {
+	index := make(filterIndex)
+	for i := filters.UnknownSubscription; i < filters.LastIndexSubscription; i++ {
+		index[i] = make(map[rpc.ID]*Subscription)
+	}
+
+	es := &EventSystem{
+		ctx:        context.Background(),
+		tmWSClient: tmWSClient,
+		lightMode:  false,
+		index:      index,
+		topicChans: make(map[string]chan<- coretypes.ResultEvent, len(index)),
+		indexMux:   new(sync.RWMutex),
+		install:    make(chan *Subscription),
+		uninstall:  make(chan *Subscription),
+		eventBus:   pubsub.NewEventBus(),
+	}
+
+	go es.eventLoop()
+	go es.consumeEvents()
+	return es
+}
+
+// WithContext sets a new context to the EventSystem. This is required to set a timeout context when
+// a new filter is intantiated.
+func (es *EventSystem) WithContext(ctx context.Context) {
+	es.ctx = ctx
+}
+
+// subscribe performs a new event subscription to a given Tendermint event.
+// The subscription creates a unidirectional receive event channel to receive the ResultEvent.
+func (es *EventSystem) subscribe(sub *Subscription) (*Subscription, context.CancelFunc, error) {
+	var (
+		err      error
+		cancelFn context.CancelFunc
+	)
+
+	es.ctx, cancelFn = context.WithCancel(context.Background())
+
+	existingSubs := es.eventBus.Topics()
+	for _, topic := range existingSubs {
+		if topic == sub.event {
+			eventCh, err := es.eventBus.Subscribe(sub.event)
+			if err != nil {
+				err := errors.Wrapf(err, "failed to subscribe to topic: %s", sub.event)
+				return nil, cancelFn, err
+			}
+
+			sub.eventCh = eventCh
+			return sub, cancelFn, nil
+		}
+	}
+
+	switch sub.typ {
+	case filters.LogsSubscription:
+		err = es.tmWSClient.Subscribe(es.ctx, sub.event)
+	case filters.BlocksSubscription:
+		err = es.tmWSClient.Subscribe(es.ctx, sub.event)
+	default:
+		err = fmt.Errorf("invalid filter subscription type %d", sub.typ)
+	}
+
+	if err != nil {
+		sub.err <- err
+		return nil, cancelFn, err
+	}
+
+	// wrap events in a go routine to prevent blocking
+	es.install <- sub
+	<-sub.installed
+
+	eventCh, err := es.eventBus.Subscribe(sub.event)
+	if err != nil {
+		err := errors.Wrapf(err, "failed to subscribe to topic after installed: %s", sub.event)
+		return sub, cancelFn, err
+	}
+
+	sub.eventCh = eventCh
+	return sub, cancelFn, nil
+}
+
+// SubscribeLogs creates a subscription that will write all logs matching the
+// given criteria to the given logs channel. Default value for the from and to
+// block is "latest". If the fromBlock > toBlock an error is returned.
+func (es *EventSystem) SubscribeLogs(crit filters.FilterCriteria) (*Subscription, context.CancelFunc, error) {
+	var from, to rpc.BlockNumber
+	if crit.FromBlock == nil {
+		from = rpc.LatestBlockNumber
+	} else {
+		from = rpc.BlockNumber(crit.FromBlock.Int64())
+	}
+	if crit.ToBlock == nil {
+		to = rpc.LatestBlockNumber
+	} else {
+		to = rpc.BlockNumber(crit.ToBlock.Int64())
+	}
+
+	switch {
+	// only interested in new mined logs, mined logs within a specific block range, or
+	// logs from a specific block number to new mined blocks
+	case (from == rpc.LatestBlockNumber && to == rpc.LatestBlockNumber),
+		(from >= 0 && to >= 0 && to >= from):
+		return es.subscribeLogs(crit)
+
+	default:
+		return nil, nil, fmt.Errorf("invalid from and to block combination: from > to (%d > %d)", from, to)
+	}
+}
+
+// subscribeLogs creates a subscription that will write all logs matching the
+// given criteria to the given logs channel.
+func (es *EventSystem) subscribeLogs(crit filters.FilterCriteria) (*Subscription, context.CancelFunc, error) {
+	sub := &Subscription{
+		id:        rpc.NewID(),
+		typ:       filters.LogsSubscription,
+		event:     evmEvents,
+		logsCrit:  crit,
+		created:   time.Now().UTC(),
+		logs:      make(chan []*ethtypes.Log),
+		installed: make(chan struct{}, 1),
+		err:       make(chan error, 1),
+	}
+	return es.subscribe(sub)
+}
+
+// SubscribeNewHeads subscribes to new block headers events.
+func (es EventSystem) SubscribeNewHeads() (*Subscription, context.CancelFunc, error) {
+	sub := &Subscription{
+		id:        rpc.NewID(),
+		typ:       filters.BlocksSubscription,
+		event:     headerEvents,
+		created:   time.Now().UTC(),
+		headers:   make(chan *ethtypes.Header),
+		installed: make(chan struct{}, 1),
+		err:       make(chan error, 1),
+	}
+	return es.subscribe(sub)
+}
+
+// SubscribePendingTxs subscribes to new pending transactions events from the mempool.
+func (es EventSystem) SubscribePendingTxs() (*Subscription, context.CancelFunc, error) {
+	sub := &Subscription{
+		id:        rpc.NewID(),
+		typ:       filters.PendingTransactionsSubscription,
+		event:     txEvents,
+		created:   time.Now().UTC(),
+		hashes:    make(chan []common.Hash),
+		installed: make(chan struct{}, 1),
+		err:       make(chan error, 1),
+	}
+	return es.subscribe(sub)
+}
+
+type filterIndex map[filters.Type]map[rpc.ID]*Subscription
+
+// eventLoop (un)installs filters and processes mux events.
+func (es *EventSystem) eventLoop() {
+	for {
+		select {
+		case f := <-es.install:
+			es.indexMux.Lock()
+			es.index[f.typ][f.id] = f
+			ch := make(chan coretypes.ResultEvent)
+			es.topicChans[f.event] = ch
+			if err := es.eventBus.AddTopic(f.event, ch); err != nil {
+				log.WithField("topic", f.event).WithError(err).Errorln("failed to add event topic to event bus")
+			}
+			es.indexMux.Unlock()
+			close(f.installed)
+		case f := <-es.uninstall:
+			es.indexMux.Lock()
+			delete(es.index[f.typ], f.id)
+
+			var channelInUse bool
+			for _, sub := range es.index[f.typ] {
+				if sub.event == f.event {
+					channelInUse = true
+					break
+				}
+			}
+
+			// remove topic only when channel is not used by other subscriptions
+			if !channelInUse {
+				if err := es.tmWSClient.Unsubscribe(es.ctx, f.event); err != nil {
+					log.WithError(err).WithField("query", f.event).Errorln("failed to unsubscribe from query")
+				}
+
+				ch, ok := es.topicChans[f.event]
+				if ok {
+					es.eventBus.RemoveTopic(f.event)
+					close(ch)
+					delete(es.topicChans, f.event)
+				}
+			}
+
+			es.indexMux.Unlock()
+			close(f.err)
+		}
+	}
+}
+
+func (es *EventSystem) consumeEvents() {
+	for {
+		for rpcResp := range es.tmWSClient.ResponsesCh {
+			var ev coretypes.ResultEvent
+
+			if rpcResp.Error != nil {
+				time.Sleep(5 * time.Second)
+				continue
+			} else if err := tmjson.Unmarshal(rpcResp.Result, &ev); err != nil {
+				log.WithError(err).Warningln("failed to JSON unmarshal ResponsesCh result event")
+				continue
+			}
+
+			if len(ev.Query) == 0 {
+				// skip empty responses
+				continue
+			}
+
+			es.indexMux.RLock()
+			ch, ok := es.topicChans[ev.Query]
+			es.indexMux.RUnlock()
+			if !ok {
+				log.WithField("topic", ev.Query).Warningln("channel for subscription not found, lol")
+				log.Infoln("available channels:", es.eventBus.Topics())
+				continue
+			}
+
+			// gracefully handle lagging subscribers
+			t := time.NewTimer(time.Second)
+			select {
+			case <-t.C:
+				log.WithField("topic", ev.Query).Warningln("dropped event during lagging subscription")
+			case ch <- ev:
+			}
+		}
+
+		time.Sleep(time.Second)
+	}
+}
+
+// Subscription defines a wrapper for the private subscription
+type Subscription struct {
+	id        rpc.ID
+	typ       filters.Type
+	event     string
+	created   time.Time
+	logsCrit  filters.FilterCriteria
+	logs      chan []*ethtypes.Log
+	hashes    chan []common.Hash
+	headers   chan *ethtypes.Header
+	installed chan struct{} // closed when the filter is installed
+	eventCh   <-chan coretypes.ResultEvent
+	err       chan error
+}
+
+// ID returns the underlying subscription RPC identifier.
+func (s Subscription) ID() rpc.ID {
+	return s.id
+}
+
+// Unsubscribe from the current subscription to Tendermint Websocket. It sends an error to the
+// subscription error channel if unsubscription fails.
+func (s *Subscription) Unsubscribe(es *EventSystem) {
+	go func() {
+	uninstallLoop:
+		for {
+			// write uninstall request and consume logs/hashes. This prevents
+			// the eventLoop broadcast method to deadlock when writing to the
+			// filter event channel while the subscription loop is waiting for
+			// this method to return (and thus not reading these events).
+			select {
+			case es.uninstall <- s:
+				break uninstallLoop
+			case <-s.logs:
+			case <-s.hashes:
+			case <-s.headers:
+			}
+		}
+	}()
+}
+
+// Err returns the error channel
+func (s *Subscription) Err() <-chan error {
+	return s.err
+}

ethereum/rpc/filters.go

@@ -0,0 +1,302 @@
+package rpc
+
+import (
+	"context"
+	"fmt"
+	"math/big"
+
+	"github.com/cosmos/ethermint/ethereum/rpc/types"
+
+	"github.com/pkg/errors"
+	log "github.com/xlab/suplog"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/bloombits"
+	ethtypes "github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/eth/filters"
+)
+
+// Filter can be used to retrieve and filter logs.
+type Filter struct {
+	backend  FiltersBackend
+	criteria filters.FilterCriteria
+	matcher  *bloombits.Matcher
+}
+
+// NewBlockFilter creates a new filter which directly inspects the contents of
+// a block to figure out whether it is interesting or not.
+func NewBlockFilter(backend FiltersBackend, criteria filters.FilterCriteria) *Filter {
+	// Create a generic filter and convert it into a block filter
+	return newFilter(backend, criteria, nil)
+}
+
+// NewRangeFilter creates a new filter which uses a bloom filter on blocks to
+// figure out whether a particular block is interesting or not.
+func NewRangeFilter(backend FiltersBackend, begin, end int64, addresses []common.Address, topics [][]common.Hash) *Filter {
+	// Flatten the address and topic filter clauses into a single bloombits filter
+	// system. Since the bloombits are not positional, nil topics are permitted,
+	// which get flattened into a nil byte slice.
+	var filtersBz [][][]byte // nolint: prealloc
+	if len(addresses) > 0 {
+		filter := make([][]byte, len(addresses))
+		for i, address := range addresses {
+			filter[i] = address.Bytes()
+		}
+		filtersBz = append(filtersBz, filter)
+	}
+
+	for _, topicList := range topics {
+		filter := make([][]byte, len(topicList))
+		for i, topic := range topicList {
+			filter[i] = topic.Bytes()
+		}
+		filtersBz = append(filtersBz, filter)
+	}
+
+	size, _ := backend.BloomStatus()
+
+	// Create a generic filter and convert it into a range filter
+	criteria := filters.FilterCriteria{
+		FromBlock: big.NewInt(begin),
+		ToBlock:   big.NewInt(end),
+		Addresses: addresses,
+		Topics:    topics,
+	}
+
+	return newFilter(backend, criteria, bloombits.NewMatcher(size, filtersBz))
+}
+
+// newFilter returns a new Filter
+func newFilter(backend FiltersBackend, criteria filters.FilterCriteria, matcher *bloombits.Matcher) *Filter {
+	return &Filter{
+		backend:  backend,
+		criteria: criteria,
+		matcher:  matcher,
+	}
+}
+
+const (
+	maxFilterBlocks = 100000
+	maxToOverhang   = 600
+)
+
+// Logs searches the blockchain for matching log entries, returning all from the
+// first block that contains matches, updating the start of the filter accordingly.
+func (f *Filter) Logs(_ context.Context) ([]*ethtypes.Log, error) {
+	logs := []*ethtypes.Log{}
+	var err error
+
+	// If we're doing singleton block filtering, execute and return
+	if f.criteria.BlockHash != nil && *f.criteria.BlockHash != (common.Hash{}) {
+		header, err := f.backend.HeaderByHash(*f.criteria.BlockHash)
+		if err != nil {
+			err = errors.Wrap(err, "failed to fetch header by hash")
+			return nil, err
+		}
+
+		if header == nil {
+			err := errors.Errorf("unknown block header %s", f.criteria.BlockHash.String())
+			return nil, err
+		}
+
+		return f.blockLogs(header)
+	}
+
+	// Figure out the limits of the filter range
+	header, err := f.backend.HeaderByNumber(types.EthLatestBlockNumber)
+	if err != nil {
+		err = errors.Wrap(err, "failed to fetch header by number (latest)")
+		return nil, err
+	}
+
+	if header == nil || header.Number == nil {
+		log.Warningln("header not found or has no number")
+		return nil, nil
+	}
+
+	head := header.Number.Int64()
+	if f.criteria.FromBlock.Int64() == -1 {
+		f.criteria.FromBlock = big.NewInt(head)
+	}
+	if f.criteria.ToBlock.Int64() == -1 {
+		f.criteria.ToBlock = big.NewInt(head)
+	}
+
+	if f.criteria.ToBlock.Int64()-f.criteria.FromBlock.Int64() > maxFilterBlocks {
+		err := errors.Errorf("maximum [from, to] blocks distance: %d", maxFilterBlocks)
+		return nil, err
+	}
+
+	// check bounds
+	if f.criteria.FromBlock.Int64() > head {
+		return []*ethtypes.Log{}, nil
+	} else if f.criteria.ToBlock.Int64() > head+maxToOverhang {
+		f.criteria.ToBlock = big.NewInt(head + maxToOverhang)
+	}
+
+	for i := f.criteria.FromBlock.Int64(); i <= f.criteria.ToBlock.Int64(); i++ {
+		block, err := f.backend.GetBlockByNumber(types.BlockNumber(i), false)
+		if err != nil {
+			err = errors.Wrapf(err, "failed to fetch block by number %d", i)
+			return logs, err
+		} else if block["transactions"] == nil {
+			continue
+		}
+
+		var txHashes []common.Hash
+
+		txs, ok := block["transactions"].([]interface{})
+		if !ok {
+			txHashes, ok = block["transactions"].([]common.Hash)
+			if !ok {
+				log.WithField(
+					"transactions",
+					fmt.Sprintf("%T", block["transactions"]),
+				).Errorln("reading transactions from block data: bad field type")
+				continue
+			}
+		} else if len(txs) == 0 && len(txHashes) == 0 {
+			continue
+		}
+
+		for _, tx := range txs {
+			txHash, ok := tx.(common.Hash)
+			if !ok {
+				log.WithField(
+					"tx",
+					fmt.Sprintf("%T", tx),
+				).Errorln("transactions list contains non-hash element")
+			} else {
+				txHashes = append(txHashes, txHash)
+			}
+		}
+
+		logsMatched := f.checkMatches(txHashes)
+		logs = append(logs, logsMatched...)
+	}
+
+	return logs, nil
+}
+
+// blockLogs returns the logs matching the filter criteria within a single block.
+func (f *Filter) blockLogs(header *ethtypes.Header) ([]*ethtypes.Log, error) {
+	if !bloomFilter(header.Bloom, f.criteria.Addresses, f.criteria.Topics) {
+		return []*ethtypes.Log{}, nil
+	}
+
+	// DANGER: do not call GetLogs(header.Hash())
+	// eth header's hash doesn't match tm block hash
+	logsList, err := f.backend.GetLogsByNumber(types.BlockNumber(header.Number.Int64()))
+	if err != nil {
+		err = errors.Wrapf(err, "failed to fetch logs block number %d", header.Number.Int64())
+
+		return []*ethtypes.Log{}, err
+	}
+
+	var unfiltered []*ethtypes.Log // nolint: prealloc
+	for _, logs := range logsList {
+		unfiltered = append(unfiltered, logs...)
+	}
+
+	logs := filterLogs(unfiltered, nil, nil, f.criteria.Addresses, f.criteria.Topics)
+	if len(logs) == 0 {
+		return []*ethtypes.Log{}, nil
+	}
+
+	return logs, nil
+}
+
+// checkMatches checks if the logs from the a list of transactions transaction
+// contain any log events that  match the filter criteria. This function is
+// called when the bloom filter signals a potential match.
+func (f *Filter) checkMatches(transactions []common.Hash) []*ethtypes.Log {
+	unfiltered := []*ethtypes.Log{}
+	for _, tx := range transactions {
+		logs, err := f.backend.GetTransactionLogs(tx)
+		if err != nil {
+			// ignore error if transaction didn't set any logs (eg: when tx type is not
+			// MsgEthereumTx or MsgEthermint)
+			continue
+		}
+
+		unfiltered = append(unfiltered, logs...)
+	}
+
+	return filterLogs(unfiltered, f.criteria.FromBlock, f.criteria.ToBlock, f.criteria.Addresses, f.criteria.Topics)
+}
+
+// filterLogs creates a slice of logs matching the given criteria.
+// [] -> anything
+// [A] -> A in first position of log topics, anything after
+// [null, B] -> anything in first position, B in second position
+// [A, B] -> A in first position and B in second position
+// [[A, B], [A, B]] -> A or B in first position, A or B in second position
+func filterLogs(logs []*ethtypes.Log, fromBlock, toBlock *big.Int, addresses []common.Address, topics [][]common.Hash) []*ethtypes.Log {
+	var ret []*ethtypes.Log
+Logs:
+	for _, log := range logs {
+		if fromBlock != nil && fromBlock.Int64() >= 0 && fromBlock.Uint64() > log.BlockNumber {
+			continue
+		}
+		if toBlock != nil && toBlock.Int64() >= 0 && toBlock.Uint64() < log.BlockNumber {
+			continue
+		}
+		if len(addresses) > 0 && !includes(addresses, log.Address) {
+			continue
+		}
+		// If the to filtered topics is greater than the amount of topics in logs, skip.
+		if len(topics) > len(log.Topics) {
+			continue
+		}
+		for i, sub := range topics {
+			match := len(sub) == 0 // empty rule set == wildcard
+			for _, topic := range sub {
+				if log.Topics[i] == topic {
+					match = true
+					break
+				}
+			}
+			if !match {
+				continue Logs
+			}
+		}
+		ret = append(ret, log)
+	}
+	return ret
+}
+
+func includes(addresses []common.Address, a common.Address) bool {
+	for _, addr := range addresses {
+		if addr == a {
+			return true
+		}
+	}
+
+	return false
+}
+
+func bloomFilter(bloom ethtypes.Bloom, addresses []common.Address, topics [][]common.Hash) bool {
+	var included bool
+	if len(addresses) > 0 {
+		for _, addr := range addresses {
+			if ethtypes.BloomLookup(bloom, addr) {
+				included = true
+				break
+			}
+		}
+		if !included {
+			return false
+		}
+	}
+
+	for _, sub := range topics {
+		included = len(sub) == 0 // empty rule set == wildcard
+		for _, topic := range sub {
+			if ethtypes.BloomLookup(bloom, topic) {
+				included = true
+				break
+			}
+		}
+	}
+	return included
+}

ethereum/rpc/net_api.go

@@ -1,11 +1,14 @@
-package net
+package rpc
 
 import (
 	"fmt"
 
-	"github.com/cosmos/cosmos-sdk/client"
+	"github.com/spf13/viper"
 
 	ethermint "github.com/cosmos/ethermint/types"
+
+	"github.com/cosmos/cosmos-sdk/client"
+	"github.com/cosmos/cosmos-sdk/client/flags"
 )
 
 // PublicNetAPI is the eth_ prefixed set of APIs in the Web3 JSON-RPC spec.
@@ -13,10 +16,11 @@ type PublicNetAPI struct {
 	networkVersion uint64
 }
 
-// NewAPI creates an instance of the public Net Web3 API.
-func NewAPI(clientCtx client.Context) *PublicNetAPI {
+// NewPublicNetAPI creates an instance of the public Net Web3 API.
+func NewPublicNetAPI(_ client.Context) *PublicNetAPI {
+	chainID := viper.GetString(flags.FlagChainID)
 	// parse the chainID from a integer string
-	chainIDEpoch, err := ethermint.ParseChainID(clientCtx.ChainID)
+	chainIDEpoch, err := ethermint.ParseChainID(chainID)
 	if err != nil {
 		panic(err)
 	}
@@ -27,6 +31,6 @@ func NewAPI(clientCtx client.Context) *PublicNetAPI {
 }
 
 // Version returns the current ethereum protocol version.
-func (api *PublicNetAPI) Version() string {
-	return fmt.Sprintf("%d", api.networkVersion)
+func (s *PublicNetAPI) Version() string {
+	return fmt.Sprintf("%d", s.networkVersion)
 }

ethereum/rpc/pubsub/pubsub.go

@@ -0,0 +1,128 @@
+package pubsub
+
+import (
+	"sync"
+
+	"github.com/pkg/errors"
+
+	coretypes "github.com/tendermint/tendermint/rpc/core/types"
+)
+
+type EventBus interface {
+	AddTopic(name string, src <-chan coretypes.ResultEvent) error
+	RemoveTopic(name string)
+	Subscribe(name string) (<-chan coretypes.ResultEvent, error)
+	Topics() []string
+}
+
+type memEventBus struct {
+	topics         map[string]<-chan coretypes.ResultEvent
+	topicsMux      *sync.RWMutex
+	subscribers    map[string][]chan<- coretypes.ResultEvent
+	subscribersMux *sync.RWMutex
+}
+
+func NewEventBus() EventBus {
+	return &memEventBus{
+		topics:         make(map[string]<-chan coretypes.ResultEvent),
+		topicsMux:      new(sync.RWMutex),
+		subscribers:    make(map[string][]chan<- coretypes.ResultEvent),
+		subscribersMux: new(sync.RWMutex),
+	}
+}
+
+func (m *memEventBus) Topics() (topics []string) {
+	m.topicsMux.RLock()
+	defer m.topicsMux.RUnlock()
+
+	topics = make([]string, 0, len(m.topics))
+	for topicName := range m.topics {
+		topics = append(topics, topicName)
+	}
+
+	return topics
+}
+
+func (m *memEventBus) AddTopic(name string, src <-chan coretypes.ResultEvent) error {
+	m.topicsMux.RLock()
+	_, ok := m.topics[name]
+	m.topicsMux.RUnlock()
+
+	if ok {
+		return errors.New("topic already registered")
+	}
+
+	m.topicsMux.Lock()
+	m.topics[name] = src
+	m.topicsMux.Unlock()
+
+	go m.publishTopic(name, src)
+
+	return nil
+}
+
+func (m *memEventBus) RemoveTopic(name string) {
+	m.topicsMux.Lock()
+	delete(m.topics, name)
+	m.topicsMux.Unlock()
+}
+
+func (m *memEventBus) Subscribe(name string) (<-chan coretypes.ResultEvent, error) {
+	m.topicsMux.RLock()
+	_, ok := m.topics[name]
+	m.topicsMux.RUnlock()
+
+	if !ok {
+		return nil, errors.Errorf("topic not found: %s", name)
+	}
+
+	ch := make(chan coretypes.ResultEvent)
+	m.subscribersMux.Lock()
+	defer m.subscribersMux.Unlock()
+	m.subscribers[name] = append(m.subscribers[name], ch)
+
+	return ch, nil
+}
+
+func (m *memEventBus) publishTopic(name string, src <-chan coretypes.ResultEvent) {
+	for {
+		select {
+		case msg, ok := <-src:
+			if !ok {
+				m.closeAllSubscribers(name)
+				m.topicsMux.Lock()
+				delete(m.topics, name)
+				m.topicsMux.Unlock()
+
+				return
+			}
+
+			m.publishAllSubscribers(name, msg)
+		}
+	}
+}
+
+func (m *memEventBus) closeAllSubscribers(name string) {
+	m.subscribersMux.Lock()
+	defer m.subscribersMux.Unlock()
+
+	subsribers := m.subscribers[name]
+	delete(m.subscribers, name)
+
+	for _, sub := range subsribers {
+		close(sub)
+	}
+}
+
+func (m *memEventBus) publishAllSubscribers(name string, msg coretypes.ResultEvent) {
+	m.subscribersMux.RLock()
+	subsribers := m.subscribers[name]
+	m.subscribersMux.RUnlock()
+
+	for _, sub := range subsribers {
+		select {
+		case sub <- msg:
+		default:
+		}
+	}
+}

ethereum/rpc/pubsub/pubsub_test.go

@@ -0,0 +1,96 @@
+package pubsub
+
+import (
+	"log"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestAddTopic(t *testing.T) {
+	assert := assert.New(t)
+
+	q := NewEventBus()
+	err := q.AddTopic("kek", make(chan interface{}))
+	if !assert.NoError(err) {
+		return
+	}
+
+	err = q.AddTopic("lol", make(chan interface{}))
+	if !assert.NoError(err) {
+		return
+	}
+
+	err = q.AddTopic("lol", make(chan interface{}))
+	if !assert.Error(err) {
+		return
+	}
+
+	assert.EqualValues([]string{"kek", "lol"}, q.Topics())
+}
+
+func TestSubscribe(t *testing.T) {
+	assert := assert.New(t)
+
+	q := NewEventBus()
+	kekSrc := make(chan interface{})
+	q.AddTopic("kek", kekSrc)
+
+	lolSrc := make(chan interface{})
+	q.AddTopic("lol", lolSrc)
+
+	kekSubC, err := q.Subscribe("kek")
+	if !assert.NoError(err) {
+		return
+	}
+
+	lolSubC, err := q.Subscribe("lol")
+	if !assert.NoError(err) {
+		return
+	}
+
+	lol2SubC, err := q.Subscribe("lol")
+	if !assert.NoError(err) {
+		return
+	}
+
+	wg := new(sync.WaitGroup)
+	wg.Add(4)
+
+	go func() {
+		defer wg.Done()
+		msg := <-kekSubC
+		log.Println("kek:", msg)
+		assert.EqualValues(1, msg)
+	}()
+
+	go func() {
+		defer wg.Done()
+		msg := <-lolSubC
+		log.Println("lol:", msg)
+		assert.EqualValues(1, msg)
+	}()
+
+	go func() {
+		defer wg.Done()
+		msg := <-lol2SubC
+		log.Println("lol2:", msg)
+		assert.EqualValues(1, msg)
+	}()
+
+	go func() {
+		defer wg.Done()
+
+		time.Sleep(time.Second)
+		kekSrc <- 1
+		lolSrc <- 1
+
+		close(kekSrc)
+		close(lolSrc)
+	}()
+
+	wg.Wait()
+	time.Sleep(time.Second)
+}

ethereum/rpc/types/block.go

@@ -7,9 +7,9 @@ import (
 	"math/big"
 	"strings"
 
-	"google.golang.org/grpc/metadata"
-
 	grpctypes "github.com/cosmos/cosmos-sdk/types/grpc"
+	"github.com/spf13/cast"
+	"google.golang.org/grpc/metadata"
 
 	"github.com/ethereum/go-ethereum/common/hexutil"
 )
@@ -18,14 +18,9 @@ import (
 type BlockNumber int64
 
 const (
-	// LatestBlockNumber mapping from "latest" to 0 for tm query
-	LatestBlockNumber = BlockNumber(0)
-
-	// EarliestBlockNumber mapping from "earliest" to 1 for tm query (earliest query not supported)
-	EarliestBlockNumber = BlockNumber(1)
-
-	// PendingBlockNumber mapping from "pending" to -1 for tm query
-	PendingBlockNumber = BlockNumber(-1)
+	EthPendingBlockNumber  = BlockNumber(-2)
+	EthLatestBlockNumber   = BlockNumber(-1)
+	EthEarliestBlockNumber = BlockNumber(0)
 )
 
 // NewBlockNumber creates a new BlockNumber instance.
@@ -34,9 +29,9 @@ func NewBlockNumber(n *big.Int) BlockNumber {
 }
 
 // ContextWithHeight wraps a context with the a gRPC block height header. If the provided height is
-// 0 or -1, it will return an empty context and the gRPC query will use the latest block height for querying.
+// 0, it will return an empty context and the gRPC query will use the latest block height for querying.
 func ContextWithHeight(height int64) context.Context {
-	if height == LatestBlockNumber.Int64() || height == PendingBlockNumber.Int64() {
+	if height == 0 {
 		return context.Background()
 	}
 
@@ -57,30 +52,39 @@ func (bn *BlockNumber) UnmarshalJSON(data []byte) error {
 
 	switch input {
 	case "earliest":
-		*bn = EarliestBlockNumber
+		*bn = EthEarliestBlockNumber
 		return nil
 	case "latest":
-		*bn = LatestBlockNumber
+		*bn = EthLatestBlockNumber
 		return nil
 	case "pending":
-		*bn = PendingBlockNumber
+		*bn = EthPendingBlockNumber
 		return nil
 	}
 
 	blckNum, err := hexutil.DecodeUint64(input)
-	if err != nil {
+	if err == hexutil.ErrMissingPrefix {
+		blckNum = cast.ToUint64(input)
+	} else if err != nil {
 		return err
 	}
-	if blckNum > math.MaxInt64 {
-		return fmt.Errorf("blocknumber too high")
-	}
 
+	if blckNum > math.MaxInt64 {
+		return fmt.Errorf("block number larger than int64")
+	}
 	*bn = BlockNumber(blckNum)
+
 	return nil
 }
 
 // Int64 converts block number to primitive type
 func (bn BlockNumber) Int64() int64 {
+	if bn < 0 {
+		return 0
+	} else if bn == 0 {
+		return 1
+	}
+
 	return int64(bn)
 }
 
@@ -88,9 +92,13 @@ func (bn BlockNumber) Int64() int64 {
 // nil if the block number is "latest". Otherwise, it returns the pointer of the
 // int64 value of the height.
 func (bn BlockNumber) TmHeight() *int64 {
-	if bn == LatestBlockNumber {
+	if bn < 0 {
 		return nil
+	} else if bn == EthEarliestBlockNumber {
+		var firstHeight int64 = 0
+		return &firstHeight
 	}
+
 	height := bn.Int64()
 	return &height
 }

ethereum/rpc/types/query_client.go

@@ -3,11 +3,12 @@ package types
 import (
 	"fmt"
 
+	"github.com/cosmos/cosmos-sdk/types/tx"
+
 	abci "github.com/tendermint/tendermint/abci/types"
 	"github.com/tendermint/tendermint/proto/tendermint/crypto"
 
 	"github.com/cosmos/cosmos-sdk/client"
-	"github.com/cosmos/cosmos-sdk/types/tx"
 
 	evmtypes "github.com/cosmos/ethermint/x/evm/types"
 )

ethereum/rpc/types/types.go

@@ -70,9 +70,9 @@ type CallArgs struct {
 	Data     *hexutil.Bytes  `json:"data"`
 }
 
-// Account indicates the overriding fields of account during the execution of
+// account indicates the overriding fields of account during the execution of
 // a message call.
-// NOTE: state and stateDiff can't be specified at the same time. If state is
+// Note, state and stateDiff can't be specified at the same time. If state is
 // set, message execution will only use the data in the given state. Otherwise
 // if statDiff is set, all diff will be applied first and then execute the call
 // message.

ethereum/rpc/types/utils.go

@@ -17,6 +17,7 @@ import (
 	authsigning "github.com/cosmos/cosmos-sdk/x/auth/signing"
 
 	"github.com/cosmos/ethermint/crypto/ethsecp256k1"
+	ethermint "github.com/cosmos/ethermint/types"
 	evmtypes "github.com/cosmos/ethermint/x/evm/types"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -47,18 +48,23 @@ func NewTransaction(tx *evmtypes.MsgEthereumTx, txHash, blockHash common.Hash, b
 		return nil, err
 	}
 
+	gasPrice := new(big.Int).SetBytes(tx.Data.Price)
+	value := new(big.Int).SetBytes(tx.Data.Amount)
+
 	rpcTx := &Transaction{
 		From:     from,
 		Gas:      hexutil.Uint64(tx.Data.GasLimit),
-		GasPrice: (*hexutil.Big)(tx.Data.Price.BigInt()),
-		Hash:     txHash,
-		Input:    hexutil.Bytes(tx.Data.Payload),
-		Nonce:    hexutil.Uint64(tx.Data.AccountNonce),
-		To:       tx.To(),
-		Value:    (*hexutil.Big)(tx.Data.Amount.BigInt()),
-		V:        (*hexutil.Big)(new(big.Int).SetBytes(tx.Data.V)),
-		R:        (*hexutil.Big)(new(big.Int).SetBytes(tx.Data.R)),
-		S:        (*hexutil.Big)(new(big.Int).SetBytes(tx.Data.S)),
+		GasPrice: (*hexutil.Big)(gasPrice),
+		//GasPrice: (*hexutil.Big)(tx.Data.Price.BigInt()),
+		Hash:  txHash,
+		Input: hexutil.Bytes(tx.Data.Payload),
+		Nonce: hexutil.Uint64(tx.Data.AccountNonce),
+		To:    tx.To(),
+		Value: (*hexutil.Big)(value),
+		//Value:    (*hexutil.Big)(tx.Data.Amount.BigInt()),
+		V: (*hexutil.Big)(new(big.Int).SetBytes(tx.Data.V)),
+		R: (*hexutil.Big)(new(big.Int).SetBytes(tx.Data.R)),
+		S: (*hexutil.Big)(new(big.Int).SetBytes(tx.Data.S)),
 	}
 
 	if blockHash != (common.Hash{}) {
@@ -84,15 +90,14 @@ func EthBlockFromTendermint(clientCtx client.Context, queryClient *QueryClient,
 
 	req := &evmtypes.QueryBlockBloomRequest{}
 
-	// use height 0 for querying the latest block height
-	res, err := queryClient.BlockBloom(ContextWithHeight(0), req)
+	res, err := queryClient.BlockBloom(ContextWithHeight(block.Height), req)
 	if err != nil {
 		return nil, err
 	}
 
 	bloom := ethtypes.BytesToBloom(res.Bloom)
 
-	return FormatBlock(block.Header, block.Size(), block.Hash(), gasLimit, gasUsed, transactions, bloom), nil
+	return FormatBlock(block.Header, block.Size(), gasLimit, gasUsed, transactions, bloom), nil
 }
 
 // EthHeaderFromTendermint is an util function that returns an Ethereum Header
@@ -127,7 +132,7 @@ func EthTransactionsFromTendermint(clientCtx client.Context, txs []tmtypes.Tx) (
 			continue
 		}
 		// TODO: Remove gas usage calculation if saving gasUsed per block
-		gasUsed.Add(gasUsed, big.NewInt(int64(ethTx.GetGas())))
+		gasUsed.Add(gasUsed, ethTx.Fee())
 		transactionHashes = append(transactionHashes, common.BytesToHash(tx.Hash()))
 	}
 
@@ -155,7 +160,7 @@ func BlockMaxGasFromConsensusParams(ctx context.Context, clientCtx client.Contex
 // FormatBlock creates an ethereum block from a tendermint header and ethereum-formatted
 // transactions.
 func FormatBlock(
-	header tmtypes.Header, size int, curBlockHash tmbytes.HexBytes, gasLimit int64,
+	header tmtypes.Header, size int, gasLimit int64,
 	gasUsed *big.Int, transactions interface{}, bloom ethtypes.Bloom,
 ) map[string]interface{} {
 	if len(header.DataHash) == 0 {
@@ -164,7 +169,7 @@ func FormatBlock(
 
 	return map[string]interface{}{
 		"number":           hexutil.Uint64(header.Height),
-		"hash":             hexutil.Bytes(curBlockHash),
+		"hash":             hexutil.Bytes(header.Hash()),
 		"parentHash":       hexutil.Bytes(header.LastBlockID.Hash),
 		"nonce":            hexutil.Uint64(0), // PoW specific
 		"sha3Uncles":       common.Hash{},     // No uncles in Tendermint
@@ -197,13 +202,9 @@ func GetKeyByAddress(keys []ethsecp256k1.PrivKey, address common.Address) (key *
 }
 
 // BuildEthereumTx builds and signs a Cosmos transaction from a MsgEthereumTx and returns the tx
-func BuildEthereumTx(
-	clientCtx client.Context,
-	msgs []sdk.Msg,
-	accNumber, seq, gasLimit uint64,
-	fees sdk.Coins,
-	privKey cryptotypes.PrivKey,
-) ([]byte, error) {
+func BuildEthereumTx(clientCtx client.Context, msg *evmtypes.MsgEthereumTx, accNumber, seq uint64, privKey cryptotypes.PrivKey) ([]byte, error) {
+	// TODO: user defined evm coin
+	fees := sdk.NewCoins(ethermint.NewPhotonCoin(sdk.NewIntFromBigInt(msg.Fee())))
 	signMode := clientCtx.TxConfig.SignModeHandler().DefaultMode()
 	signerData := authsigning.SignerData{
 		ChainID:       clientCtx.ChainID,
@@ -213,12 +214,12 @@ func BuildEthereumTx(
 
 	// Create a TxBuilder
 	txBuilder := clientCtx.TxConfig.NewTxBuilder()
-	if err := txBuilder.SetMsgs(msgs...); err != nil {
+	if err := txBuilder.SetMsgs(msg); err != nil {
 		return nil, err
 
 	}
 	txBuilder.SetFeeAmount(fees)
-	txBuilder.SetGasLimit(gasLimit)
+	txBuilder.SetGasLimit(msg.GetGas())
 
 	// sign with the private key
 	sigV2, err := tx.SignWithPrivKey(
@@ -259,6 +260,7 @@ func GetBlockCumulativeGas(clientCtx client.Context, block *tmtypes.Block, idx i
 		case *evmtypes.MsgEthereumTx:
 			gasUsed += tx.GetGas()
 		case sdk.FeeTx:
+			// TODO: add internal txns
 			gasUsed += tx.GetGas()
 		}
 	}

ethereum/rpc/utils.go

@@ -0,0 +1,242 @@
+package rpc
+
+import (
+	"context"
+	"encoding/hex"
+	"fmt"
+	"math/big"
+
+	"github.com/xlab/suplog"
+
+	tmbytes "github.com/tendermint/tendermint/libs/bytes"
+	tmtypes "github.com/tendermint/tendermint/types"
+
+	"github.com/cosmos/cosmos-sdk/client"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	ethtypes "github.com/ethereum/go-ethereum/core/types"
+
+	rpctypes "github.com/cosmos/ethermint/ethereum/rpc/types"
+	ethermint "github.com/cosmos/ethermint/types"
+	evmtypes "github.com/cosmos/ethermint/x/evm/types"
+)
+
+type DataError interface {
+	Error() string          // returns the message
+	ErrorData() interface{} // returns the error data
+}
+
+type dataError struct {
+	msg  string
+	data string
+}
+
+func (d *dataError) Error() string {
+	return d.msg
+}
+
+func (d *dataError) ErrorData() interface{} {
+	return d.data
+}
+
+type sdkTxLogs struct {
+	Log string `json:"log"`
+}
+
+const logRevertedFlag = "transaction reverted"
+
+func errRevertedWith(data []byte) DataError {
+	return &dataError{
+		msg:  "VM execution error.",
+		data: fmt.Sprintf("0x%s", hex.EncodeToString(data)),
+	}
+}
+
+// NewTransaction returns a transaction that will serialize to the RPC
+// representation, with the given location metadata set (if available).
+func NewTransaction(tx *evmtypes.MsgEthereumTx, txHash, blockHash common.Hash, blockNumber, index uint64) (*rpctypes.Transaction, error) {
+	// Verify signature and retrieve sender address
+	from, err := tx.VerifySig(tx.ChainID())
+	if err != nil {
+		return nil, err
+	}
+
+	rpcTx := &rpctypes.Transaction{
+		From:     from,
+		Gas:      hexutil.Uint64(tx.Data.GasLimit),
+		GasPrice: (*hexutil.Big)(new(big.Int).SetBytes(tx.Data.Price)),
+		Hash:     txHash,
+		Input:    hexutil.Bytes(tx.Data.Payload),
+		Nonce:    hexutil.Uint64(tx.Data.AccountNonce),
+		To:       tx.To(),
+		Value:    (*hexutil.Big)(new(big.Int).SetBytes(tx.Data.Amount)),
+		V:        (*hexutil.Big)(new(big.Int).SetBytes(tx.Data.V)),
+		R:        (*hexutil.Big)(new(big.Int).SetBytes(tx.Data.R)),
+		S:        (*hexutil.Big)(new(big.Int).SetBytes(tx.Data.S)),
+	}
+	if rpcTx.To == nil {
+		addr := common.HexToAddress("0x0000000000000000000000000000000000000000")
+		rpcTx.To = &addr
+	}
+
+	if blockHash != (common.Hash{}) {
+		rpcTx.BlockHash = &blockHash
+		rpcTx.BlockNumber = (*hexutil.Big)(new(big.Int).SetUint64(blockNumber))
+		rpcTx.TransactionIndex = (*hexutil.Uint64)(&index)
+	}
+
+	return rpcTx, nil
+}
+
+// NewTransaction returns a transaction that will serialize to the RPC
+// representation, with the given location metadata set (if available).
+func NewTransactionFromData(
+	txData *evmtypes.TxData,
+	from common.Address,
+	txHash, blockHash common.Hash,
+	blockNumber, index uint64,
+) (*rpctypes.Transaction, error) {
+
+	var to *common.Address
+	if len(txData.Recipient) > 0 {
+		recipient := common.BytesToAddress(txData.Recipient)
+		to = &recipient
+	}
+
+	rpcTx := &rpctypes.Transaction{
+		From:     from,
+		Gas:      hexutil.Uint64(txData.GasLimit),
+		GasPrice: (*hexutil.Big)(new(big.Int).SetBytes(txData.Price)),
+		Hash:     txHash,
+		Input:    hexutil.Bytes(txData.Payload),
+		Nonce:    hexutil.Uint64(txData.AccountNonce),
+		To:       to,
+		Value:    (*hexutil.Big)(new(big.Int).SetBytes(txData.Amount)),
+		V:        (*hexutil.Big)(new(big.Int).SetBytes(txData.V)),
+		R:        (*hexutil.Big)(new(big.Int).SetBytes(txData.R)),
+		S:        (*hexutil.Big)(new(big.Int).SetBytes(txData.S)),
+	}
+	if rpcTx.To == nil {
+		addr := common.HexToAddress("0x0000000000000000000000000000000000000000")
+		rpcTx.To = &addr
+	}
+
+	if blockHash != (common.Hash{}) {
+		rpcTx.BlockHash = &blockHash
+		rpcTx.BlockNumber = (*hexutil.Big)(new(big.Int).SetUint64(blockNumber))
+		rpcTx.TransactionIndex = (*hexutil.Uint64)(&index)
+	}
+
+	return rpcTx, nil
+}
+
+// EthHeaderFromTendermint is an util function that returns an Ethereum Header
+// from a tendermint Header.
+func EthHeaderFromTendermint(header tmtypes.Header) *ethtypes.Header {
+	return &ethtypes.Header{
+		ParentHash:  common.BytesToHash(header.LastBlockID.Hash.Bytes()),
+		UncleHash:   common.Hash{},
+		Coinbase:    common.Address{},
+		Root:        common.BytesToHash(header.AppHash),
+		TxHash:      common.BytesToHash(header.DataHash),
+		ReceiptHash: common.Hash{},
+		Difficulty:  nil,
+		Number:      big.NewInt(header.Height),
+		Time:        uint64(header.Time.Unix()),
+		Extra:       nil,
+		MixDigest:   common.Hash{},
+		Nonce:       ethtypes.BlockNonce{},
+	}
+}
+
+// BlockMaxGasFromConsensusParams returns the gas limit for the latest block from the chain consensus params.
+func BlockMaxGasFromConsensusParams(ctx context.Context, clientCtx client.Context, height *int64, logger suplog.Logger) (int64, error) {
+	return ethermint.DefaultRPCGasLimit, nil
+}
+
+var zeroHash = hexutil.Bytes(make([]byte, 32))
+
+func hashOrZero(data []byte) hexutil.Bytes {
+	if len(data) == 0 {
+		return zeroHash
+	}
+
+	return hexutil.Bytes(data)
+}
+
+func bigOrZero(i *big.Int) *hexutil.Big {
+	if i == nil {
+		return new(hexutil.Big)
+	}
+
+	return (*hexutil.Big)(i)
+}
+
+func formatBlock(
+	header tmtypes.Header, size int, gasLimit int64,
+	gasUsed *big.Int, transactions interface{}, bloom ethtypes.Bloom,
+) map[string]interface{} {
+	if len(header.DataHash) == 0 {
+		header.DataHash = tmbytes.HexBytes(common.Hash{}.Bytes())
+	}
+
+	var txRoot interface{}
+
+	txDescriptors, ok := transactions.([]interface{})
+	if !ok || len(txDescriptors) == 0 {
+		txRoot = ethtypes.EmptyRootHash
+		transactions = []common.Hash{}
+	} else {
+		txRoot = hashOrZero(header.DataHash)
+	}
+
+	ret := map[string]interface{}{
+		"parentHash":       hashOrZero(header.LastBlockID.Hash),
+		"sha3Uncles":       ethtypes.EmptyUncleHash, // No uncles in Tendermint
+		"miner":            common.Address{},
+		"stateRoot":        hashOrZero(header.AppHash),
+		"transactionsRoot": txRoot,
+		"receiptsRoot":     zeroHash,
+		"logsBloom":        hexutil.Encode(bloom.Bytes()),
+		"difficulty":       new(hexutil.Big),
+		"number":           hexutil.Uint64(header.Height),
+		"gasLimit":         hexutil.Uint64(gasLimit), // Static gas limit
+		"gasUsed":          bigOrZero(gasUsed),
+		"timestamp":        hexutil.Uint64(header.Time.Unix()),
+		"extraData":        hexutil.Bytes([]byte{}),
+		"mixHash":          zeroHash,
+		"hash":             hashOrZero(header.Hash()),
+		"nonce":            ethtypes.EncodeNonce(0),
+		"totalDifficulty":  new(hexutil.Big),
+		"size":             hexutil.Uint64(size),
+		"transactions":     transactions,
+		"uncles":           []string{},
+	}
+
+	return ret
+}
+
+// GetBlockCumulativeGas returns the cumulative gas used on a block up to a given
+// transaction index. The returned gas used includes the gas from both the SDK and
+// EVM module transactions.
+func GetBlockCumulativeGas(clientCtx client.Context, block *tmtypes.Block, idx int) uint64 {
+	var gasUsed uint64
+	txDecoder := clientCtx.TxConfig.TxDecoder()
+
+	for i := 0; i < idx && i < len(block.Txs); i++ {
+		txi, err := txDecoder(block.Txs[i])
+		if err != nil {
+			continue
+		}
+
+		switch tx := txi.(type) {
+		case *evmtypes.MsgEthereumTx:
+			gasUsed += tx.GetGas()
+		case sdk.FeeTx:
+			gasUsed += tx.GetGas()
+		}
+	}
+
+	return gasUsed
+}

ethereum/rpc/web3_api.go

@@ -1,29 +1,26 @@
-package web3
+package rpc
 
 import (
-	"fmt"
+	"github.com/cosmos/ethermint/version"
 
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/crypto"
-
-	"github.com/cosmos/cosmos-sdk/version"
 )
 
 // PublicWeb3API is the web3_ prefixed set of APIs in the Web3 JSON-RPC spec.
 type PublicWeb3API struct{}
 
-// NewAPI creates an instance of the Web3 API.
-func NewAPI() *PublicWeb3API {
+// NewPublicWeb3API creates an instance of the Web3 API.
+func NewPublicWeb3API() *PublicWeb3API {
 	return &PublicWeb3API{}
 }
 
 // ClientVersion returns the client version in the Web3 user agent format.
-func (PublicWeb3API) ClientVersion() string {
-	info := version.NewInfo()
-	return fmt.Sprintf("%s-%s", info.Name, info.Version)
+func (a *PublicWeb3API) ClientVersion() string {
+	return version.ClientVersion()
 }
 
 // Sha3 returns the keccak-256 hash of the passed-in input.
-func (PublicWeb3API) Sha3(input hexutil.Bytes) hexutil.Bytes {
+func (a *PublicWeb3API) Sha3(input hexutil.Bytes) hexutil.Bytes {
 	return crypto.Keccak256(input)
 }

ethereum/rpc/websockets.go

@@ -0,0 +1,747 @@
+package rpc
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"math/big"
+	"net/http"
+	"sync"
+
+	"github.com/gorilla/mux"
+	"github.com/gorilla/websocket"
+	"github.com/pkg/errors"
+	log "github.com/xlab/suplog"
+
+	coretypes "github.com/tendermint/tendermint/rpc/core/types"
+	rpcclient "github.com/tendermint/tendermint/rpc/jsonrpc/client"
+	tmtypes "github.com/tendermint/tendermint/types"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/eth/filters"
+	"github.com/ethereum/go-ethereum/rpc"
+
+	evmtypes "github.com/cosmos/ethermint/x/evm/types"
+)
+
+type WebsocketsServer interface {
+	Start()
+}
+
+type SubscriptionResponseJSON struct {
+	Jsonrpc string      `json:"jsonrpc"`
+	Result  interface{} `json:"result"`
+	ID      float64     `json:"id"`
+}
+
+type SubscriptionNotification struct {
+	Jsonrpc string              `json:"jsonrpc"`
+	Method  string              `json:"method"`
+	Params  *SubscriptionResult `json:"params"`
+}
+
+type SubscriptionResult struct {
+	Subscription rpc.ID      `json:"subscription"`
+	Result       interface{} `json:"result"`
+}
+
+type ErrorResponseJSON struct {
+	Jsonrpc string            `json:"jsonrpc"`
+	Error   *ErrorMessageJSON `json:"error"`
+	ID      *big.Int          `json:"id"`
+}
+
+type ErrorMessageJSON struct {
+	Code    *big.Int `json:"code"`
+	Message string   `json:"message"`
+}
+
+type websocketsServer struct {
+	rpcAddr string // listen address of rest-server
+	wsAddr  string // listen address of ws server
+	api     *pubSubAPI
+	logger  log.Logger
+}
+
+func NewWebsocketsServer(tmWSClient *rpcclient.WSClient, rpcAddr, wsAddr string) *websocketsServer {
+	return &websocketsServer{
+		rpcAddr: rpcAddr,
+		wsAddr:  wsAddr,
+		api:     newPubSubAPI(tmWSClient),
+		logger:  log.WithField("module", "websocket-server"),
+	}
+}
+
+func (s *websocketsServer) Start() {
+	ws := mux.NewRouter()
+	ws.Handle("/", s)
+
+	go func() {
+		err := http.ListenAndServe(s.wsAddr, ws)
+		if err != nil {
+			if err == http.ErrServerClosed {
+				return
+			}
+
+			s.logger.WithError(err).Errorln("failed to start HTTP server for WS")
+		}
+	}()
+}
+
+func (s *websocketsServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	var upgrader = websocket.Upgrader{
+		CheckOrigin: func(r *http.Request) bool {
+			return true
+		},
+	}
+
+	conn, err := upgrader.Upgrade(w, r, nil)
+	if err != nil {
+		s.logger.WithError(err).Warningln("websocket upgrade failed")
+		return
+	}
+
+	s.readLoop(&wsConn{
+		mux:  new(sync.Mutex),
+		conn: conn,
+	})
+}
+
+func (s *websocketsServer) sendErrResponse(wsConn *wsConn, msg string) {
+	res := &ErrorResponseJSON{
+		Jsonrpc: "2.0",
+		Error: &ErrorMessageJSON{
+			Code:    big.NewInt(-32600),
+			Message: msg,
+		},
+		ID: nil,
+	}
+
+	_ = wsConn.WriteJSON(res)
+}
+
+type wsConn struct {
+	conn *websocket.Conn
+	mux  *sync.Mutex
+}
+
+func (w *wsConn) WriteJSON(v interface{}) error {
+	w.mux.Lock()
+	defer w.mux.Unlock()
+
+	return w.conn.WriteJSON(v)
+}
+
+func (w *wsConn) Close() error {
+	w.mux.Lock()
+	defer w.mux.Unlock()
+
+	return w.conn.Close()
+}
+
+func (w *wsConn) ReadMessage() (messageType int, p []byte, err error) {
+	// not protected by write mutex
+
+	return w.conn.ReadMessage()
+}
+
+func (s *websocketsServer) readLoop(wsConn *wsConn) {
+	for {
+		_, mb, err := wsConn.ReadMessage()
+		if err != nil {
+			_ = wsConn.Close()
+			return
+		}
+
+		var msg map[string]interface{}
+		err = json.Unmarshal(mb, &msg)
+		if err != nil {
+			s.sendErrResponse(wsConn, "invalid request")
+			continue
+		}
+
+		// check if method == eth_subscribe or eth_unsubscribe
+		method, ok := msg["method"].(string)
+		if !ok {
+			// otherwise, call the usual rpc server to respond
+			err = s.tcpGetAndSendResponse(wsConn, mb)
+			if err != nil {
+				s.sendErrResponse(wsConn, err.Error())
+			}
+
+			continue
+		}
+
+		connId := msg["id"].(float64)
+		if method == "eth_subscribe" {
+			params := msg["params"].([]interface{})
+			if len(params) == 0 {
+				s.sendErrResponse(wsConn, "invalid parameters")
+				continue
+			}
+
+			id, err := s.api.subscribe(wsConn, params)
+			if err != nil {
+				s.sendErrResponse(wsConn, err.Error())
+				continue
+			}
+
+			res := &SubscriptionResponseJSON{
+				Jsonrpc: "2.0",
+				ID:      connId,
+				Result:  id,
+			}
+
+			err = wsConn.WriteJSON(res)
+			if err != nil {
+				continue
+			}
+
+			continue
+		} else if method == "eth_unsubscribe" {
+			ids, ok := msg["params"].([]interface{})
+			if _, idok := ids[0].(string); !ok || !idok {
+				s.sendErrResponse(wsConn, "invalid parameters")
+				continue
+			}
+
+			ok = s.api.unsubscribe(rpc.ID(ids[0].(string)))
+			res := &SubscriptionResponseJSON{
+				Jsonrpc: "2.0",
+				ID:      connId,
+				Result:  ok,
+			}
+
+			err = wsConn.WriteJSON(res)
+			if err != nil {
+				continue
+			}
+
+			continue
+		}
+
+		// otherwise, call the usual rpc server to respond
+		err = s.tcpGetAndSendResponse(wsConn, mb)
+		if err != nil {
+			s.sendErrResponse(wsConn, err.Error())
+		}
+	}
+}
+
+// tcpGetAndSendResponse connects to the rest-server over tcp, posts a JSON-RPC request, and sends the response
+// to the client over websockets
+func (s *websocketsServer) tcpGetAndSendResponse(wsConn *wsConn, mb []byte) error {
+	req, err := http.NewRequest("POST", "http://"+s.rpcAddr, bytes.NewBuffer(mb))
+	if err != nil {
+		return errors.Wrap(err, "Could not build request")
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+	client := &http.Client{}
+	resp, err := client.Do(req)
+	if err != nil {
+		return errors.Wrap(err, "Could not perform request")
+	}
+
+	defer resp.Body.Close()
+
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return errors.Wrap(err, "could not read body from response")
+	}
+
+	var wsSend interface{}
+	err = json.Unmarshal(body, &wsSend)
+	if err != nil {
+		return errors.Wrap(err, "failed to unmarshal rest-server response")
+	}
+
+	return wsConn.WriteJSON(wsSend)
+}
+
+type wsSubscription struct {
+	sub          *Subscription
+	unsubscribed chan struct{} // closed when unsubscribing
+	wsConn       *wsConn
+	query        string
+}
+
+// pubSubAPI is the eth_ prefixed set of APIs in the Web3 JSON-RPC spec
+type pubSubAPI struct {
+	events    *EventSystem
+	filtersMu *sync.RWMutex
+	filters   map[rpc.ID]*wsSubscription
+	logger    log.Logger
+}
+
+// newPubSubAPI creates an instance of the ethereum PubSub API.
+func newPubSubAPI(tmWSClient *rpcclient.WSClient) *pubSubAPI {
+	return &pubSubAPI{
+		events:    NewEventSystem(tmWSClient),
+		filtersMu: new(sync.RWMutex),
+		filters:   make(map[rpc.ID]*wsSubscription),
+		logger:    log.WithField("module", "websocket-client"),
+	}
+}
+
+func (api *pubSubAPI) subscribe(wsConn *wsConn, params []interface{}) (rpc.ID, error) {
+	method, ok := params[0].(string)
+	if !ok {
+		return "0", errors.New("invalid parameters")
+	}
+
+	switch method {
+	case "newHeads":
+		// TODO: handle extra params
+		return api.subscribeNewHeads(wsConn)
+	case "logs":
+		if len(params) > 1 {
+			return api.subscribeLogs(wsConn, params[1])
+		}
+		return api.subscribeLogs(wsConn, nil)
+	case "newPendingTransactions":
+		return api.subscribePendingTransactions(wsConn)
+	case "syncing":
+		return api.subscribeSyncing(wsConn)
+	default:
+		return "0", errors.Errorf("unsupported method %s", method)
+	}
+}
+
+func (api *pubSubAPI) unsubscribe(id rpc.ID) bool {
+	api.filtersMu.Lock()
+	defer api.filtersMu.Unlock()
+
+	wsSub, ok := api.filters[id]
+	if !ok {
+		return false
+	}
+
+	wsSub.sub.Unsubscribe(api.events)
+	close(api.filters[id].unsubscribed)
+	delete(api.filters, id)
+	return true
+}
+
+func (api *pubSubAPI) getSubscriptionByQuery(query string) *Subscription {
+	api.filtersMu.Lock()
+	defer api.filtersMu.Unlock()
+
+	for _, wsSub := range api.filters {
+		if wsSub.query == query {
+			return wsSub.sub
+		}
+	}
+	return nil
+}
+
+func (api *pubSubAPI) subscribeNewHeads(wsConn *wsConn) (rpc.ID, error) {
+	var query = "subscribeNewHeads"
+	var subID = rpc.NewID()
+
+	sub, _, err := api.events.SubscribeNewHeads()
+	if err != nil {
+		return "", errors.Wrap(err, "error creating block filter")
+	}
+
+	unsubscribed := make(chan struct{})
+	api.filtersMu.Lock()
+	api.filters[subID] = &wsSubscription{
+		sub:          sub,
+		wsConn:       wsConn,
+		unsubscribed: unsubscribed,
+		query:        query,
+	}
+	api.filtersMu.Unlock()
+
+	go func(headersCh <-chan coretypes.ResultEvent, errCh <-chan error) {
+		for {
+			select {
+			case event, ok := <-headersCh:
+				if !ok {
+					api.unsubscribe(subID)
+					return
+				}
+
+				data, ok := event.Data.(tmtypes.EventDataNewBlockHeader)
+				if !ok {
+					log.WithFields(log.Fields{
+						"expected": "tmtypes.EventDataNewBlockHeader",
+						"actual":   fmt.Sprintf("%T", event.Data),
+					}).Warningln("event Data type mismatch")
+					continue
+				}
+
+				header := EthHeaderFromTendermint(data.Header)
+
+				api.filtersMu.RLock()
+				for subID, wsSub := range api.filters {
+					if wsSub.query != query {
+						continue
+					}
+					// write to ws conn
+					res := &SubscriptionNotification{
+						Jsonrpc: "2.0",
+						Method:  "eth_subscription",
+						Params: &SubscriptionResult{
+							Subscription: subID,
+							Result:       header,
+						},
+					}
+
+					err = wsSub.wsConn.WriteJSON(res)
+					if err != nil {
+						api.logger.WithError(err).Error("error writing header, will drop peer")
+
+						try(func() {
+							api.filtersMu.RUnlock()
+							api.filtersMu.Lock()
+							defer func() {
+								api.filtersMu.Unlock()
+								api.filtersMu.RLock()
+							}()
+
+							if err != websocket.ErrCloseSent {
+								_ = wsSub.wsConn.Close()
+							}
+
+							delete(api.filters, subID)
+							close(wsSub.unsubscribed)
+						}, api.logger, "closing websocket peer sub")
+					}
+				}
+				api.filtersMu.RUnlock()
+			case err, ok := <-errCh:
+				if !ok {
+					api.unsubscribe(subID)
+					return
+				}
+				log.WithError(err).Debugln("dropping NewHeads WebSocket subscription", subID)
+				api.unsubscribe(subID)
+			case <-unsubscribed:
+				return
+			}
+		}
+	}(sub.eventCh, sub.Err())
+
+	return subID, nil
+}
+
+func try(fn func(), l log.Logger, desc string) {
+	if l == nil {
+		l = log.DefaultLogger
+	}
+
+	defer func() {
+		if x := recover(); x != nil {
+			if err, ok := x.(error); ok {
+				// debug.PrintStack()
+				l.WithError(err).Debugln("panic during", desc)
+				return
+			}
+
+			// debug.PrintStack()
+			l.Debugf("panic during %s: %+v", desc, x)
+			return
+		}
+	}()
+
+	fn()
+}
+
+func (api *pubSubAPI) subscribeLogs(wsConn *wsConn, extra interface{}) (rpc.ID, error) {
+	crit := filters.FilterCriteria{}
+
+	if extra != nil {
+		params, ok := extra.(map[string]interface{})
+		if !ok {
+			err := errors.New("invalid criteria")
+			log.WithFields(log.Fields{
+				"criteria": fmt.Sprintf("expected: map[string]interface{}, got %T", extra),
+			}).Errorln(err)
+			return "", err
+		}
+
+		if params["address"] != nil {
+			address, ok := params["address"].(string)
+			addresses, sok := params["address"].([]interface{})
+			if !ok && !sok {
+				err := errors.New("invalid address; must be address or array of addresses")
+				log.WithFields(log.Fields{
+					"address":   ok,
+					"addresses": sok,
+					"type":      fmt.Sprintf("%T", params["address"]),
+				}).Errorln(err)
+				return "", err
+			}
+
+			if ok {
+				crit.Addresses = []common.Address{common.HexToAddress(address)}
+			}
+
+			if sok {
+				crit.Addresses = []common.Address{}
+				for _, addr := range addresses {
+					address, ok := addr.(string)
+					if !ok {
+						err := errors.New("invalid address")
+						log.WithField("type", fmt.Sprintf("%T", addr)).Errorln(err)
+						return "", err
+					}
+
+					crit.Addresses = append(crit.Addresses, common.HexToAddress(address))
+				}
+			}
+		}
+
+		if params["topics"] != nil {
+			topics, ok := params["topics"].([]interface{})
+			if !ok {
+				err := errors.New("invalid topics")
+
+				log.WithFields(log.Fields{
+					"type": fmt.Sprintf("expected []interface{}, got %T", params["topics"]),
+				}).Errorln(err)
+
+				return "", err
+			}
+
+			crit.Topics = make([][]common.Hash, len(topics))
+
+			addCritTopic := func(topicIdx int, topic interface{}) error {
+				tstr, ok := topic.(string)
+				if !ok {
+					err := errors.Errorf("invalid topic: %s", topic)
+					log.WithField("type", fmt.Sprintf("expected string, got %T", topic)).Errorln(err)
+					return err
+				}
+
+				crit.Topics[topicIdx] = []common.Hash{common.HexToHash(tstr)}
+				return nil
+			}
+
+			for topicIdx, subtopics := range topics {
+				if subtopics == nil {
+					continue
+				}
+
+				// in case we don't have list, but a single topic value
+				if topic, ok := subtopics.(string); ok {
+					if err := addCritTopic(topicIdx, topic); err != nil {
+						return "", err
+					}
+
+					continue
+				}
+
+				// in case we actually have a list of subtopics
+				subtopicsList, ok := subtopics.([]interface{})
+				if !ok {
+					err := errors.New("invalid subtopics")
+
+					log.WithFields(log.Fields{
+						"type": fmt.Sprintf("expected []interface{}, got %T", subtopics),
+					}).Errorln(err)
+
+					return "", err
+				}
+
+				subtopicsCollect := make([]common.Hash, len(subtopicsList))
+				for idx, subtopic := range subtopicsList {
+					tstr, ok := subtopic.(string)
+					if !ok {
+						err := errors.Errorf("invalid subtopic: %s", subtopic)
+						log.WithField("type", fmt.Sprintf("expected string, got %T", subtopic)).Errorln(err)
+						return "", err
+					}
+
+					subtopicsCollect[idx] = common.HexToHash(tstr)
+				}
+
+				crit.Topics[topicIdx] = subtopicsCollect
+			}
+		}
+	}
+
+	critBz, err := json.Marshal(crit)
+	if err != nil {
+		log.WithError(err).Errorln("failed to JSON marshal criteria")
+		return rpc.ID(""), err
+	}
+
+	var query = "subscribeLogs" + string(critBz)
+	var subID = rpc.NewID()
+
+	sub, _, err := api.events.SubscribeLogs(crit)
+	if err != nil {
+		log.WithError(err).Errorln("failed to subscribe logs")
+		return rpc.ID(""), err
+	}
+
+	unsubscribed := make(chan struct{})
+	api.filtersMu.Lock()
+	api.filters[subID] = &wsSubscription{
+		sub:          sub,
+		wsConn:       wsConn,
+		unsubscribed: unsubscribed,
+		query:        query,
+	}
+	api.filtersMu.Unlock()
+
+	go func(ch <-chan coretypes.ResultEvent, errCh <-chan error, subID rpc.ID) {
+		for {
+			select {
+			case event, ok := <-ch:
+				if !ok {
+					api.unsubscribe(subID)
+					return
+				}
+
+				dataTx, ok := event.Data.(tmtypes.EventDataTx)
+				if !ok {
+					log.WithFields(log.Fields{
+						"expected": "tmtypes.EventDataTx",
+						"actual":   fmt.Sprintf("%T", event.Data),
+					}).Warningln("event Data type mismatch")
+					continue
+				}
+
+				txResponse, err := evmtypes.DecodeTxResponse(dataTx.TxResult.Result.Data)
+				if err != nil {
+					log.WithError(err).Errorln("failed to decode tx response")
+					return
+				}
+
+				logs := filterLogs(txResponse.TxLogs.EthLogs(), crit.FromBlock, crit.ToBlock, crit.Addresses, crit.Topics)
+				if len(logs) == 0 {
+					continue
+				}
+
+				api.filtersMu.RLock()
+				wsSub, ok := api.filters[subID]
+				if !ok {
+					log.Warningln("subID not in filters", subID)
+					return
+				}
+				api.filtersMu.RUnlock()
+
+				for _, ethLog := range logs {
+					res := &SubscriptionNotification{
+						Jsonrpc: "2.0",
+						Method:  "eth_subscription",
+						Params: &SubscriptionResult{
+							Subscription: subID,
+							Result:       ethLog,
+						},
+					}
+
+					err = wsSub.wsConn.WriteJSON(res)
+					if err != nil {
+						try(func() {
+							api.filtersMu.Lock()
+							defer api.filtersMu.Unlock()
+
+							if err != websocket.ErrCloseSent {
+								_ = wsSub.wsConn.Close()
+							}
+
+							delete(api.filters, subID)
+							close(wsSub.unsubscribed)
+						}, api.logger, "closing websocket peer sub")
+					}
+				}
+			case err, ok := <-errCh:
+				if !ok {
+					api.unsubscribe(subID)
+					return
+				}
+				log.WithError(err).Warningln("dropping Logs WebSocket subscription", subID)
+				api.unsubscribe(subID)
+			case <-unsubscribed:
+				return
+			}
+		}
+	}(sub.eventCh, sub.Err(), subID)
+
+	return subID, nil
+}
+
+func (api *pubSubAPI) subscribePendingTransactions(wsConn *wsConn) (rpc.ID, error) {
+	var query = "subscribePendingTransactions"
+	var subID = rpc.NewID()
+
+	sub, _, err := api.events.SubscribePendingTxs()
+	if err != nil {
+		return "", errors.Wrap(err, "error creating block filter: %s")
+	}
+
+	unsubscribed := make(chan struct{})
+	api.filtersMu.Lock()
+	api.filters[subID] = &wsSubscription{
+		sub:          sub,
+		wsConn:       wsConn,
+		unsubscribed: unsubscribed,
+		query:        query,
+	}
+	api.filtersMu.Unlock()
+
+	go func(txsCh <-chan coretypes.ResultEvent, errCh <-chan error) {
+		for {
+			select {
+			case ev := <-txsCh:
+				data, _ := ev.Data.(tmtypes.EventDataTx)
+				txHash := common.BytesToHash(tmtypes.Tx(data.Tx).Hash())
+
+				api.filtersMu.RLock()
+				for subID, wsSub := range api.filters {
+					if wsSub.query != query {
+						continue
+					}
+					// write to ws conn
+					res := &SubscriptionNotification{
+						Jsonrpc: "2.0",
+						Method:  "eth_subscription",
+						Params: &SubscriptionResult{
+							Subscription: subID,
+							Result:       txHash,
+						},
+					}
+
+					err = wsSub.wsConn.WriteJSON(res)
+					if err != nil {
+						api.logger.WithError(err).Warningln("error writing header, will drop peer")
+
+						try(func() {
+							api.filtersMu.Lock()
+							defer api.filtersMu.Unlock()
+
+							if err != websocket.ErrCloseSent {
+								_ = wsSub.wsConn.Close()
+							}
+
+							delete(api.filters, subID)
+							close(wsSub.unsubscribed)
+						}, api.logger, "closing websocket peer sub")
+					}
+				}
+				api.filtersMu.RUnlock()
+			case err, ok := <-errCh:
+				if !ok {
+					api.unsubscribe(subID)
+					return
+				}
+				log.WithError(err).Warningln("dropping PendingTransactions WebSocket subscription", subID)
+				api.unsubscribe(subID)
+			case <-unsubscribed:
+				return
+			}
+		}
+	}(sub.eventCh, sub.Err())
+
+	return subID, nil
+}
+
+func (api *pubSubAPI) subscribeSyncing(wsConn *wsConn) (rpc.ID, error) {
+	return "", nil
+}

go.mod

@@ -5,20 +5,25 @@ go 1.15
 require (
 	github.com/aristanetworks/goarista v0.0.0-20201012165903-2cb20defcd66 // indirect
 	github.com/armon/go-metrics v0.3.6
+	github.com/aws/aws-sdk-go v1.38.21 // indirect
 	github.com/btcsuite/btcd v0.21.0-beta
 	github.com/btcsuite/btcutil v1.0.2
+	github.com/bugsnag/bugsnag-go v2.1.0+incompatible // indirect
+	github.com/bugsnag/panicwrap v1.3.2 // indirect
 	github.com/cespare/cp v1.1.1 // indirect
 	github.com/cosmos/cosmos-sdk v0.42.4
 	github.com/cosmos/go-bip39 v1.0.0
 	github.com/deckarep/golang-set v1.7.1 // indirect
 	github.com/ethereum/go-ethereum v1.9.25
 	github.com/fjl/memsize v0.0.0-20190710130421-bcb5799ab5e5 // indirect
+	github.com/gofrs/uuid v4.0.0+incompatible // indirect
 	github.com/gogo/protobuf v1.3.3
 	github.com/golang/protobuf v1.5.2
 	github.com/google/uuid v1.2.0
 	github.com/gorilla/mux v1.8.0
 	github.com/gorilla/websocket v1.4.2
 	github.com/grpc-ecosystem/grpc-gateway v1.16.0
+	github.com/kardianos/osext v0.0.0-20190222173326-2bc1f35cddc0 // indirect
 	github.com/mattn/go-colorable v0.1.8 // indirect
 	github.com/miguelmota/go-ethereum-hdwallet v0.0.0-20200123000308-a60dcd172b4c
 	github.com/pkg/errors v0.9.1
@@ -30,12 +35,14 @@ require (
 	github.com/spf13/viper v1.7.1
 	github.com/status-im/keycard-go v0.0.0-20200402102358-957c09536969
 	github.com/stretchr/testify v1.7.0
-	github.com/tendermint/tendermint v0.34.9
+	github.com/tendermint/tendermint v0.34.10
 	github.com/tendermint/tm-db v0.6.4
 	github.com/tyler-smith/go-bip39 v1.0.2
+	github.com/xlab/suplog v1.3.0 // indirect
 	golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2
+	golang.org/x/sys v0.0.0-20210415045647-66c3f260301c // indirect
 	google.golang.org/genproto v0.0.0-20210405174219-a39eb2f71cb9
-	google.golang.org/grpc v1.36.1
+	google.golang.org/grpc v1.37.0
 	gopkg.in/yaml.v2 v2.4.0
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
 )

go.sum

@@ -80,8 +80,11 @@ github.com/armon/go-metrics v0.3.6/go.mod h1:4O98XIr/9W0sxpJ8UaYkvjk10Iff7SnFrb4
 github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
 github.com/aryann/difflib v0.0.0-20170710044230-e206f873d14a/go.mod h1:DAHtR1m6lCRdSC2Tm3DSWRPvIPr6xNKyeHdqDQSQT+A=
 github.com/aws/aws-lambda-go v1.13.3/go.mod h1:4UKl9IzQMoD+QF79YdCuzCwp8VbmG4VAQwij/eHl5CU=
+github.com/aws/aws-sdk-go v1.25.16/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/aws/aws-sdk-go v1.25.48/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/aws/aws-sdk-go v1.27.0/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
+github.com/aws/aws-sdk-go v1.38.21 h1:D08DXWI4QRaawLaW+OtsIEClOI90I6eheJs1GwXTQVI=
+github.com/aws/aws-sdk-go v1.38.21/go.mod h1:hcU610XS61/+aQV88ixoOzUoG7v3b31pl2zKMmprdro=
 github.com/aws/aws-sdk-go-v2 v0.18.0/go.mod h1:JWVYvqSMppoMJC0x5wdwiImzgXTI9FuZwxzkQq9wy+g=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
@@ -90,6 +93,7 @@ github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6r
 github.com/bgentry/speakeasy v0.1.0 h1:ByYyxL9InA1OWqxJqqp2A5pYHUrCiAL6K3J+LKSsQkY=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
 github.com/bketelsen/crypt v0.0.3-0.20200106085610-5cbc8cc4026c/go.mod h1:MKsuJmJgSg28kpZDP6UIiPt0e0Oz0kqKNGyRaWEPv84=
+github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869/go.mod h1:Ekp36dRnpXw/yCqJaO+ZrUyxD+3VXMFFr56k5XYrpB4=
 github.com/btcsuite/btcd v0.0.0-20171128150713-2e60448ffcc6/go.mod h1:Dmm/EzmjnCiweXmzRIAiUWCInVmPgjkzgv5k4tVyXiQ=
 github.com/btcsuite/btcd v0.0.0-20190115013929-ed77733ec07d/go.mod h1:d3C0AkH6BRcvO8T0UEPu53cnw4IbV63x1bEjildYhO0=
 github.com/btcsuite/btcd v0.0.0-20190824003749-130ea5bddde3/go.mod h1:3J08xEfcugPacsc34/LKRU2yO7YmuT8yt28J8k2+rrI=
@@ -108,6 +112,11 @@ github.com/btcsuite/snappy-go v0.0.0-20151229074030-0bdef8d06723/go.mod h1:8woku
 github.com/btcsuite/snappy-go v1.0.0/go.mod h1:8woku9dyThutzjeg+3xrA5iCpBRH8XEEg3lh6TiUghc=
 github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792/go.mod h1:ghJtEyQwv5/p4Mg4C0fgbePVuGr935/5ddU9Z3TmDRY=
 github.com/btcsuite/winsvc v1.0.0/go.mod h1:jsenWakMcC0zFBFurPLEAyrnc/teJEM1O46fmI40EZs=
+github.com/bugsnag/bugsnag-go v1.5.3/go.mod h1:2oa8nejYd4cQ/b0hMIopN0lCRxU0bueqREvZLWFrtK8=
+github.com/bugsnag/bugsnag-go v2.1.0+incompatible h1:SuqsBHDutts2rZh4swHEWTexxi0F/JZ/6j1rR9BFe7I=
+github.com/bugsnag/bugsnag-go v2.1.0+incompatible/go.mod h1:2oa8nejYd4cQ/b0hMIopN0lCRxU0bueqREvZLWFrtK8=
+github.com/bugsnag/panicwrap v1.3.2 h1:pNcbtPtH4Y6VwK+oZVNV/2H6Hh3jOL0ZNVFZEfd/eA4=
+github.com/bugsnag/panicwrap v1.3.2/go.mod h1:D/8v3kj0zr8ZAKg1AQ6crr+5VwKN5eIywRkfhyM/+dE=
 github.com/casbin/casbin/v2 v2.1.2/go.mod h1:YcPU1XXisHhLzuxH9coDNf2FbKpjGlbCg3n9yuLkIJQ=
 github.com/cenkalti/backoff v2.2.1+incompatible/go.mod h1:90ReRw6GdpyfrHakVjL/QHaoyV4aDUVVkXQJJJ3NXXM=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
@@ -157,6 +166,7 @@ github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwc
 github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY=
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/danieljoos/wincred v1.0.2 h1:zf4bhty2iLuwgjgpraD2E9UbvO+fe54XXGJbOwe23fU=
 github.com/danieljoos/wincred v1.0.2/go.mod h1:SnuYRW9lp1oJrZX/dXJqr0cPK5gYXqx3EJbmjhLdK9U=
 github.com/davecgh/go-spew v0.0.0-20171005155431-ecdeabc65495/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -202,6 +212,7 @@ github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymF
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
 github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
+github.com/envoyproxy/go-control-plane v0.9.9-0.20210217033140-668b12f5399d/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/ethereum/go-ethereum v1.9.5/go.mod h1:PwpWDrCLZrV+tfrhqqF6kPknbISMHaJv9Ln3kPCZLwY=
 github.com/ethereum/go-ethereum v1.9.25 h1:mMiw/zOOtCLdGLWfcekua0qPrJTe7FVIiHJ4IKNTfR0=
@@ -249,6 +260,8 @@ github.com/go-stack/stack v1.8.0 h1:5SgMzNM5HxrEjV0ww2lTmX6E2Izsfxas4+YHWRs3Lsk=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
 github.com/godbus/dbus v0.0.0-20190726142602-4481cbc300e2 h1:ZpnhV/YsD2/4cESfV5+Hoeu/iUR3ruzNvZ+yQfO03a0=
 github.com/godbus/dbus v0.0.0-20190726142602-4481cbc300e2/go.mod h1:bBOAhwG1umN6/6ZUMtDFBMQR8jRg9O75tm9K00oMsK4=
+github.com/gofrs/uuid v4.0.0+incompatible h1:1SD/1F5pU8p29ybwgQSwpQk+mwdRrXCYuPhW6m+TnJw=
+github.com/gofrs/uuid v4.0.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
 github.com/gogo/gateway v1.1.0 h1:u0SuhL9+Il+UbjM9VIE3ntfRujKbvVpFvNB4HbjeVQ0=
 github.com/gogo/gateway v1.1.0/go.mod h1:S7rR8FRQyG3QFESeSv4l2WnsyzlCLG0CzBbUUo/mbic=
 github.com/gogo/googleapis v1.1.0/go.mod h1:gf4bu3Q80BeJ6H1S1vYPm8/ELATdvryBaNFGgqEef3s=
@@ -396,6 +409,9 @@ github.com/jedisct1/go-minisign v0.0.0-20190909160543-45766022959e/go.mod h1:G1C
 github.com/jessevdk/go-flags v0.0.0-20141203071132-1679536dcc89/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
 github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
 github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af/go.mod h1:Nht3zPeWKUH0NzdCt2Blrr5ys8VGpn0CEB0cQHVjt7k=
+github.com/jmespath/go-jmespath v0.4.0 h1:BEgLn5cpjn8UN1mAw4NjwDrS35OdebyEtFe+9YPoQUg=
+github.com/jmespath/go-jmespath v0.4.0/go.mod h1:T8mJZnbsbmF+m6zOOFylbeCJqk5+pHWvzYPziyZiYoo=
+github.com/jmespath/go-jmespath/internal/testify v1.5.1/go.mod h1:L3OGu8Wl2/fWfCI6z80xFu9LTZmf1ZRjMHUOPmWr69U=
 github.com/jmhodges/levigo v1.0.0 h1:q5EC36kV79HWeTBWsod3mG11EgStG3qArTKcvlksN1U=
 github.com/jmhodges/levigo v1.0.0/go.mod h1:Q6Qx+uH3RAqyK4rFQroq9RL7mdkABMcfhEI+nNuzMJQ=
 github.com/jonboulle/clockwork v0.1.0/go.mod h1:Ii8DK3G1RaLaWxj9trq07+26W01tbo22gdxWY5EU2bo=
@@ -415,6 +431,8 @@ github.com/julienschmidt/httprouter v1.3.0/go.mod h1:JR6WtHb+2LUe8TCKY3cZOxFyyO8
 github.com/karalabe/hid v1.0.0/go.mod h1:Vr51f8rUOLYrfrWDFlV12GGQgM5AT8sVh+2fY4MPeu8=
 github.com/karalabe/usb v0.0.0-20190919080040-51dc0efba356 h1:I/yrLt2WilKxlQKCM52clh5rGzTKpVctGT1lH4Dc8Jw=
 github.com/karalabe/usb v0.0.0-20190919080040-51dc0efba356/go.mod h1:Od972xHfMJowv7NGVDiWVxk2zxnWgjLlJzE+F4F7AGU=
+github.com/kardianos/osext v0.0.0-20190222173326-2bc1f35cddc0 h1:iQTw/8FWTuc7uiaSepXwyf3o52HaUYcV+Tu66S3F5GA=
+github.com/kardianos/osext v0.0.0-20190222173326-2bc1f35cddc0/go.mod h1:1NbS8ALrpOvjt0rHPNLyCIeMtbizbir8U//inJ+zuB8=
 github.com/keybase/go-keychain v0.0.0-20190712205309-48d3d31d256d h1:Z+RDyXzjKE0i2sTjZ/b1uxiGtPhFy34Ou/Tk0qwN0kM=
 github.com/keybase/go-keychain v0.0.0-20190712205309-48d3d31d256d/go.mod h1:JJNrCn9otv/2QP4D7SMJBgaleKpOf66PnW6F5WGNRIc=
 github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQLJ+jE2L00=
@@ -436,6 +454,7 @@ github.com/kr/pretty v0.2.0/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfn
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
 github.com/libp2p/go-buffer-pool v0.0.2 h1:QNK2iAFa8gjAe1SPz6mHSMuCcjs+X1wlHzeOSqcmlfs=
 github.com/libp2p/go-buffer-pool v0.0.2/go.mod h1:MvaB6xw5vOrDl8rYZGLFdKAuk/hRoRZd1Vi32+RXyFM=
@@ -503,6 +522,7 @@ github.com/nxadm/tail v1.4.4 h1:DQuhQpB1tVlglWS2hLQ5OV6B5r8aGxSrPc5Qo6uTN78=
 github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=
 github.com/oklog/oklog v0.3.2/go.mod h1:FCV+B7mhrz4o+ueLpx+KqkyXRGMWOYEvfiXtdGtbWGs=
 github.com/oklog/run v1.0.0/go.mod h1:dlhp/R75TPv97u0XWUtDeV/lRKWPKSdTuV0TZvrmrQA=
+github.com/oklog/ulid v1.3.1 h1:EGfNDEx6MqHz8B3uNV6QAib1UR2Lm97sHi3ocA6ESJ4=
 github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
 github.com/olekukonko/tablewriter v0.0.0-20170122224234-a0225b3f23b5/go.mod h1:vsDQFd/mU46D+Z4whnwzcISnGGzXWMclvtLoiIKAKIo=
 github.com/olekukonko/tablewriter v0.0.1/go.mod h1:vsDQFd/mU46D+Z4whnwzcISnGGzXWMclvtLoiIKAKIo=
@@ -648,6 +668,8 @@ github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeV
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
 github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88=
+github.com/sirupsen/logrus v1.8.1 h1:dJKuHgqk1NNQlqoA6BTlM1Wf9DOH3NBjQyu0h9+AZZE=
+github.com/sirupsen/logrus v1.8.1/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d h1:zE9ykElWQ6/NYmHa3jpm/yHnI4xSofP+UP6SpjHcSeM=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
 github.com/smartystreets/goconvey v1.6.4 h1:fv0U8FUIMPNf1L9lnHLvLhgicrIVChEkdzIKYqbNC9s=
@@ -723,6 +745,8 @@ github.com/tendermint/tendermint v0.34.0-rc6/go.mod h1:ugzyZO5foutZImv0Iyx/gOFCX
 github.com/tendermint/tendermint v0.34.0/go.mod h1:Aj3PIipBFSNO21r+Lq3TtzQ+uKESxkbA3yo/INM4QwQ=
 github.com/tendermint/tendermint v0.34.9 h1:9P2MXDEPOcPW0NBcHQ/HDSfvczZm+q5nUUw7AZ6f1Vc=
 github.com/tendermint/tendermint v0.34.9/go.mod h1:kl4Z1JwGx1I+u1SXIzMDy7Z3T8LiMeCAOnzNn6AIMT4=
+github.com/tendermint/tendermint v0.34.10 h1:wBOc/It8sh/pVH9np2V5fBvRmIyFN/bUrGPx+eAHexs=
+github.com/tendermint/tendermint v0.34.10/go.mod h1:aeHL7alPh4uTBIJQ8mgFEE8VwJLXI1VD3rVOmH2Mcy0=
 github.com/tendermint/tm-db v0.6.2/go.mod h1:GYtQ67SUvATOcoY8/+x6ylk8Qo02BQyLrAs+yAcLvGI=
 github.com/tendermint/tm-db v0.6.3/go.mod h1:lfA1dL9/Y/Y8wwyPp2NMLyn5P5Ptr/gvDFNWtrCWSf8=
 github.com/tendermint/tm-db v0.6.4 h1:3N2jlnYQkXNQclQwd/eKV/NzlqPlfK21cpRRIx80XXQ=
@@ -745,6 +769,10 @@ github.com/wsddn/go-ecdh v0.0.0-20161211032359-48726bab9208/go.mod h1:IotVbo4F+m
 github.com/xdg/scram v0.0.0-20180814205039-7eeb5667e42c/go.mod h1:lB8K/P019DLNhemzwFU4jHLhdvlE6uDZjXFejJXr49I=
 github.com/xdg/stringprep v1.0.0/go.mod h1:Jhud4/sHMO4oL310DaZAKk9ZaJ08SJfe+sJh0HrGL1Y=
 github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
+github.com/xlab/closer v0.0.0-20190328110542-03326addb7c2 h1:LPYwXwwHigHHFX3SFa9W9zBIa5reyaLJos2e95eHh68=
+github.com/xlab/closer v0.0.0-20190328110542-03326addb7c2/go.mod h1:Y8IYP9aVODN3Vnw1FCqygCG5IWyYBeBlZqQ5aX+fHFw=
+github.com/xlab/suplog v1.3.0 h1:bbnKR8R8gSs2Q4Y25u2xH6shNNV/4r+bNspqViJQTLY=
+github.com/xlab/suplog v1.3.0/go.mod h1:Fq+wOrO0v1DZhfHxgCFB/MlFMzost3Mf/xLuJlfyUA0=
 github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
 github.com/xtaci/kcp-go v5.4.5+incompatible/go.mod h1:bN6vIwHQbfHaHtFpEssmWsN45a+AZwO7eyRCmEIbtvE=
 github.com/xtaci/kcp-go v5.4.20+incompatible/go.mod h1:bN6vIwHQbfHaHtFpEssmWsN45a+AZwO7eyRCmEIbtvE=
@@ -857,6 +885,8 @@ golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81R
 golang.org/x/net v0.0.0-20200813134508-3edf25e44fcc/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
+golang.org/x/net v0.0.0-20201110031124-69a78807bb2b/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
+golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210316092652-d523dce5a7f4 h1:b0LrWgu8+q7z4J+0Y3Umo5q1dL7NXBkKBWkaVkAq17E=
 golang.org/x/net v0.0.0-20210316092652-d523dce5a7f4/go.mod h1:RBQZq4jEuRlivfhVLdyRGr576XBO4/greRjx4P4O3yc=
@@ -924,6 +954,8 @@ golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210315160823-c6e025ad8005/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210320140829-1e4c9ba3b0c4 h1:EZ2mChiOa8udjfp6rRmswTbtZN/QzUQp4ptM4rnjHvc=
 golang.org/x/sys v0.0.0-20210320140829-1e4c9ba3b0c4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210415045647-66c3f260301c h1:6L+uOeS3OQt/f4eFHXZcTxeZrGCuz+CLElgEBjbcTA4=
+golang.org/x/sys v0.0.0-20210415045647-66c3f260301c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1 h1:v+OssWQX+hTHEmOBgwxdZxK4zHq3yOs8F9J7mk0PY8E=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
@@ -1030,6 +1062,7 @@ google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv
 google.golang.org/grpc v1.35.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
 google.golang.org/grpc v1.36.1 h1:cmUfbeGKnz9+2DD/UYsMQXeqbHZqZDs4eQwW0sFOpBY=
 google.golang.org/grpc v1.36.1/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.37.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=

rpc/apis.go

@@ -1,87 +0,0 @@
-package rpc
-
-import (
-	"github.com/cosmos/ethermint/rpc/namespaces/eth/filters"
-	"github.com/cosmos/ethermint/rpc/namespaces/net"
-	"github.com/cosmos/ethermint/rpc/namespaces/personal"
-	"github.com/cosmos/ethermint/rpc/namespaces/web3"
-	"github.com/ethereum/go-ethereum/rpc"
-
-	"github.com/cosmos/ethermint/crypto/ethsecp256k1"
-
-	"github.com/cosmos/ethermint/rpc/backend"
-	"github.com/cosmos/ethermint/rpc/namespaces/eth"
-	rpctypes "github.com/cosmos/ethermint/rpc/types"
-
-	"github.com/cosmos/cosmos-sdk/client"
-)
-
-// RPC namespaces and API version
-const (
-	Web3Namespace     = "web3"
-	EthNamespace      = "eth"
-	PersonalNamespace = "personal"
-	NetNamespace      = "net"
-	flagRPCAPI        = "rpc-api"
-
-	apiVersion = "1.0"
-	flagRPCAPI = "rpc-api"
-)
-
-// GetAPIs returns the list of all APIs from the Ethereum namespaces
-func GetAPIs(clientCtx client.Context, selectedApis []string, keys ...ethsecp256k1.PrivKey) []rpc.API {
-	nonceLock := new(rpctypes.AddrLocker)
-	backend := backend.New(clientCtx)
-	ethAPI := eth.NewAPI(clientCtx, backend, nonceLock, keys...)
-
-	var apis []rpc.API
-
-	for _, api := range selectedApis {
-		switch api {
-		case Web3Namespace:
-			apis = append(apis,
-				rpc.API{
-					Namespace: Web3Namespace,
-					Version:   apiVersion,
-					Service:   web3.NewAPI(),
-					Public:    true,
-				},
-			)
-		case EthNamespace:
-			apis = append(apis,
-				rpc.API{
-					Namespace: EthNamespace,
-					Version:   apiVersion,
-					Service:   ethAPI,
-					Public:    true,
-				},
-				rpc.API{
-					Namespace: EthNamespace,
-					Version:   apiVersion,
-					Service:   filters.NewAPI(clientCtx, backend),
-					Public:    true,
-				},
-			)
-		case PersonalNamespace:
-			apis = append(apis,
-				rpc.API{
-					Namespace: PersonalNamespace,
-					Version:   apiVersion,
-					Service:   personal.NewAPI(ethAPI),
-					Public:    false,
-				},
-			)
-		case NetNamespace:
-			apis = append(apis,
-				rpc.API{
-					Namespace: NetNamespace,
-					Version:   apiVersion,
-					Service:   net.NewAPI(clientCtx),
-					Public:    true,
-				},
-			)
-		}
-	}
-
-	return apis
-}

rpc/backend/backend.go

@@ -1,225 +0,0 @@
-package backend
-
-import (
-	"context"
-	"errors"
-	"os"
-
-	"github.com/tendermint/tendermint/libs/log"
-
-	rpctypes "github.com/cosmos/ethermint/rpc/types"
-	evmtypes "github.com/cosmos/ethermint/x/evm/types"
-
-	"github.com/cosmos/cosmos-sdk/client"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/common/hexutil"
-	ethtypes "github.com/ethereum/go-ethereum/core/types"
-)
-
-// Backend implements the functionality needed to filter changes.
-// Implemented by EthermintBackend.
-type Backend interface {
-	// Used by block filter; also used for polling
-	BlockNumber() (hexutil.Uint64, error)
-	LatestBlockNumber() (int64, error)
-	HeaderByNumber(blockNum rpctypes.BlockNumber) (*ethtypes.Header, error)
-	HeaderByHash(blockHash common.Hash) (*ethtypes.Header, error)
-	GetBlockByNumber(blockNum rpctypes.BlockNumber, fullTx bool) (map[string]interface{}, error)
-	GetBlockByHash(hash common.Hash, fullTx bool) (map[string]interface{}, error)
-
-	// returns the logs of a given block
-	GetLogs(blockHash common.Hash) ([][]*ethtypes.Log, error)
-
-	// Used by pending transaction filter
-	PendingTransactions() ([]*rpctypes.Transaction, error)
-
-	// Used by log filter
-	GetTransactionLogs(txHash common.Hash) ([]*ethtypes.Log, error)
-	BloomStatus() (uint64, uint64)
-}
-
-var _ Backend = (*EthermintBackend)(nil)
-
-// EthermintBackend implements the Backend interface
-type EthermintBackend struct {
-	ctx         context.Context
-	clientCtx   client.Context
-	queryClient *rpctypes.QueryClient // gRPC query client
-	logger      log.Logger
-}
-
-// New creates a new EthermintBackend instance
-func New(clientCtx client.Context) *EthermintBackend {
-	return &EthermintBackend{
-		ctx:         context.Background(),
-		clientCtx:   clientCtx,
-		queryClient: rpctypes.NewQueryClient(clientCtx),
-		logger:      log.NewTMLogger(log.NewSyncWriter(os.Stdout)).With("module", "json-rpc"),
-	}
-}
-
-// BlockNumber returns the current block number.
-func (b *EthermintBackend) BlockNumber() (hexutil.Uint64, error) {
-	// NOTE: using 0 as min and max height returns the blockchain info up to the latest block.
-	info, err := b.clientCtx.Client.BlockchainInfo(b.ctx, 0, 0)
-	if err != nil {
-		return hexutil.Uint64(0), err
-	}
-
-	return hexutil.Uint64(info.LastHeight), nil
-}
-
-// GetBlockByNumber returns the block identified by number.
-func (b *EthermintBackend) GetBlockByNumber(blockNum rpctypes.BlockNumber, fullTx bool) (map[string]interface{}, error) {
-	var height *int64
-	// NOTE: here pending and latest are defined as a nil height, which fetches the latest block
-	if !(blockNum == rpctypes.PendingBlockNumber || blockNum == rpctypes.LatestBlockNumber) {
-		height = blockNum.TmHeight()
-	}
-
-	resBlock, err := b.clientCtx.Client.Block(b.ctx, height)
-	if err != nil {
-		return nil, err
-	}
-
-	if resBlock.BlockID.IsZero() {
-		return nil, errors.New("failed to query block by number: nil block returned")
-	}
-
-	return rpctypes.EthBlockFromTendermint(b.clientCtx, b.queryClient, resBlock.Block)
-}
-
-// GetBlockByHash returns the block identified by hash.
-func (b *EthermintBackend) GetBlockByHash(hash common.Hash, fullTx bool) (map[string]interface{}, error) {
-	resBlock, err := b.clientCtx.Client.BlockByHash(b.ctx, hash.Bytes())
-	if err != nil {
-		return nil, err
-	}
-
-	return rpctypes.EthBlockFromTendermint(b.clientCtx, b.queryClient, resBlock.Block)
-}
-
-// HeaderByNumber returns the block header identified by height.
-func (b *EthermintBackend) HeaderByNumber(blockNum rpctypes.BlockNumber) (*ethtypes.Header, error) {
-	var height *int64
-	// NOTE: here pending and latest are defined as a nil height, which fetches the latest header
-	if !(blockNum == rpctypes.PendingBlockNumber || blockNum == rpctypes.LatestBlockNumber) {
-		height = blockNum.TmHeight()
-	}
-
-	resBlock, err := b.clientCtx.Client.Block(b.ctx, height)
-	if err != nil {
-		return nil, err
-	}
-
-	req := &evmtypes.QueryBlockBloomRequest{}
-
-	res, err := b.queryClient.BlockBloom(rpctypes.ContextWithHeight(blockNum.Int64()), req)
-	if err != nil {
-		return nil, err
-	}
-
-	ethHeader := rpctypes.EthHeaderFromTendermint(resBlock.Block.Header)
-	ethHeader.Bloom = ethtypes.BytesToBloom(res.Bloom)
-	return ethHeader, nil
-}
-
-// HeaderByHash returns the block header identified by hash.
-func (b *EthermintBackend) HeaderByHash(blockHash common.Hash) (*ethtypes.Header, error) {
-	resBlock, err := b.clientCtx.Client.BlockByHash(b.ctx, blockHash.Bytes())
-	if err != nil {
-		return nil, err
-	}
-
-	req := &evmtypes.QueryBlockBloomRequest{}
-
-	res, err := b.queryClient.BlockBloom(rpctypes.ContextWithHeight(resBlock.Block.Height), req)
-	if err != nil {
-		return nil, err
-	}
-
-	ethHeader := rpctypes.EthHeaderFromTendermint(resBlock.Block.Header)
-	ethHeader.Bloom = ethtypes.BytesToBloom(res.Bloom)
-	return ethHeader, nil
-}
-
-// GetTransactionLogs returns the logs given a transaction hash.
-// It returns an error if there's an encoding error.
-// If no logs are found for the tx hash, the error is nil.
-func (b *EthermintBackend) GetTransactionLogs(txHash common.Hash) ([]*ethtypes.Log, error) {
-	req := &evmtypes.QueryTxLogsRequest{
-		Hash: txHash.String(),
-	}
-
-	res, err := b.queryClient.TxLogs(b.ctx, req)
-	if err != nil {
-		return nil, err
-	}
-
-	return evmtypes.LogsToEthereum(res.Logs), nil
-}
-
-// PendingTransactions returns the transactions that are in the transaction pool
-// and have a from address that is one of the accounts this node manages.
-func (b *EthermintBackend) PendingTransactions() ([]*rpctypes.Transaction, error) {
-	limit := 1000
-	pendingTxs, err := b.clientCtx.Client.UnconfirmedTxs(b.ctx, &limit)
-	if err != nil {
-		return nil, err
-	}
-
-	transactions := make([]*rpctypes.Transaction, 0)
-	for _, tx := range pendingTxs.Txs {
-		ethTx, err := rpctypes.RawTxToEthTx(b.clientCtx, tx)
-		if err != nil {
-			// ignore non Ethermint EVM transactions
-			continue
-		}
-
-		// TODO: check signer and reference against accounts the node manages
-		rpcTx, err := rpctypes.NewTransaction(ethTx, common.BytesToHash(tx.Hash()), common.Hash{}, 0, 0)
-		if err != nil {
-			return nil, err
-		}
-		transactions = append(transactions, rpcTx)
-	}
-	return transactions, nil
-}
-
-// GetLogs returns all the logs from all the ethereum transactions in a block.
-func (b *EthermintBackend) GetLogs(blockHash common.Hash) ([][]*ethtypes.Log, error) {
-	// NOTE: we query the state in case the tx result logs are not persisted after an upgrade.
-	req := &evmtypes.QueryBlockLogsRequest{
-		Hash: blockHash.String(),
-	}
-
-	res, err := b.queryClient.BlockLogs(b.ctx, req)
-	if err != nil {
-		return nil, err
-	}
-
-	var blockLogs = [][]*ethtypes.Log{}
-	for _, txLog := range res.TxLogs {
-		blockLogs = append(blockLogs, txLog.EthLogs())
-	}
-
-	return blockLogs, nil
-}
-
-// BloomStatus returns the BloomBitsBlocks and the number of processed sections maintained
-// by the chain indexer.
-func (b *EthermintBackend) BloomStatus() (uint64, uint64) {
-	return 4096, 0
-}
-
-// LatestBlockNumber gets the latest block height in int64 format.
-func (b *EthermintBackend) LatestBlockNumber() (int64, error) {
-	// NOTE: using 0 as min and max height returns the blockchain info up to the latest block.
-	info, err := b.clientCtx.Client.BlockchainInfo(context.Background(), 0, 0)
-	if err != nil {
-		return 0, err
-	}
-
-	return info.LastHeight, nil
-}

rpc/config.go

@@ -1,33 +0,0 @@
-package rpc
-
-import (
-	"strings"
-
-	"github.com/gorilla/mux"
-	"github.com/spf13/viper"
-
-	"github.com/cosmos/cosmos-sdk/client"
-
-	"github.com/ethereum/go-ethereum/rpc"
-)
-
-// RegisterEthereum creates a new ethereum JSON-RPC server and recreates a CLI command to start Cosmos REST server with web3 RPC API and
-// Cosmos rest-server endpoints
-func RegisterEthereum(clientCtx client.Context, r *mux.Router) {
-	server := rpc.NewServer()
-	r.HandleFunc("/", server.ServeHTTP).Methods("POST", "OPTIONS")
-
-	rpcapi := viper.GetString(flagRPCAPI)
-	rpcapi = strings.ReplaceAll(rpcapi, " ", "")
-	rpcapiArr := strings.Split(rpcapi, ",")
-
-	apis := GetAPIs(clientCtx, rpcapiArr)
-
-	// Register all the APIs exposed by the namespace services
-	// TODO: handle allowlist and private APIs
-	for _, api := range apis {
-		if err := server.RegisterName(api.Namespace, api.Service); err != nil {
-			panic(err)
-		}
-	}
-}

rpc/namespaces/eth/filters/filter_system.go

@@ -1,379 +0,0 @@
-package filters
-
-import (
-	"context"
-	"fmt"
-	"time"
-
-	tmquery "github.com/tendermint/tendermint/libs/pubsub/query"
-	rpcclient "github.com/tendermint/tendermint/rpc/client"
-	coretypes "github.com/tendermint/tendermint/rpc/core/types"
-	tmtypes "github.com/tendermint/tendermint/types"
-
-	"github.com/ethereum/go-ethereum/common"
-	ethtypes "github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/eth/filters"
-	"github.com/ethereum/go-ethereum/rpc"
-
-	sdk "github.com/cosmos/cosmos-sdk/types"
-
-	rpctypes "github.com/cosmos/ethermint/rpc/types"
-	evmtypes "github.com/cosmos/ethermint/x/evm/types"
-)
-
-var (
-	txEvents     = tmtypes.QueryForEvent(tmtypes.EventTx).String()
-	evmEvents    = tmquery.MustParse(fmt.Sprintf("%s='%s' AND %s.%s='%s'", tmtypes.EventTypeKey, tmtypes.EventTx, sdk.EventTypeMessage, sdk.AttributeKeyModule, evmtypes.ModuleName)).String()
-	headerEvents = tmtypes.QueryForEvent(tmtypes.EventNewBlockHeader).String()
-)
-
-// EventSystem creates subscriptions, processes events and broadcasts them to the
-// subscription which match the subscription criteria using the Tendermint's RPC client.
-type EventSystem struct {
-	ctx    context.Context
-	client rpcclient.Client
-
-	// light client mode
-	lightMode bool
-
-	index filterIndex
-
-	// Subscriptions
-	txsSub  *Subscription // Subscription for new transaction event
-	logsSub *Subscription // Subscription for new log event
-	// rmLogsSub      *Subscription // Subscription for removed log event
-
-	pendingLogsSub *Subscription // Subscription for pending log event
-	chainSub       *Subscription // Subscription for new chain event
-
-	// Channels
-	install   chan *Subscription // install filter for event notification
-	uninstall chan *Subscription // remove filter for event notification
-
-	// Unidirectional channels to receive Tendermint ResultEvents
-	txsCh         <-chan coretypes.ResultEvent // Channel to receive new pending transactions event
-	logsCh        <-chan coretypes.ResultEvent // Channel to receive new log event
-	pendingLogsCh <-chan coretypes.ResultEvent // Channel to receive new pending log event
-	// rmLogsCh      <-chan coretypes.ResultEvent // Channel to receive removed log event
-
-	chainCh <-chan coretypes.ResultEvent // Channel to receive new chain event
-}
-
-// NewEventSystem creates a new manager that listens for event on the given mux,
-// parses and filters them. It uses the all map to retrieve filter changes. The
-// work loop holds its own index that is used to forward events to filters.
-//
-// The returned manager has a loop that needs to be stopped with the Stop function
-// or by stopping the given mux.
-func NewEventSystem(client rpcclient.Client) *EventSystem {
-	index := make(filterIndex)
-	for i := filters.UnknownSubscription; i < filters.LastIndexSubscription; i++ {
-		index[i] = make(map[rpc.ID]*Subscription)
-	}
-
-	es := &EventSystem{
-		ctx:           context.Background(),
-		client:        client,
-		lightMode:     false,
-		index:         index,
-		install:       make(chan *Subscription),
-		uninstall:     make(chan *Subscription),
-		txsCh:         make(<-chan coretypes.ResultEvent),
-		logsCh:        make(<-chan coretypes.ResultEvent),
-		pendingLogsCh: make(<-chan coretypes.ResultEvent),
-		// rmLogsCh:      make(<-chan coretypes.ResultEvent),
-		chainCh: make(<-chan coretypes.ResultEvent),
-	}
-
-	go es.eventLoop()
-	return es
-}
-
-// WithContext sets a new context to the EventSystem. This is required to set a timeout context when
-// a new filter is intantiated.
-func (es *EventSystem) WithContext(ctx context.Context) {
-	es.ctx = ctx
-}
-
-// subscribe performs a new event subscription to a given Tendermint event.
-// The subscription creates a unidirectional receive event channel to receive the ResultEvent. By
-// default, the subscription timeouts (i.e is canceled) after 5 minutes. This function returns an
-// error if the subscription fails (eg: if the identifier is already subscribed) or if the filter
-// type is invalid.
-func (es *EventSystem) subscribe(sub *Subscription) (*Subscription, context.CancelFunc, error) {
-	var (
-		err      error
-		cancelFn context.CancelFunc
-		eventCh  <-chan coretypes.ResultEvent
-	)
-
-	es.ctx, cancelFn = context.WithTimeout(context.Background(), deadline)
-
-	switch sub.typ {
-	case filters.PendingTransactionsSubscription:
-		eventCh, err = es.client.Subscribe(es.ctx, string(sub.id), sub.event)
-	case filters.PendingLogsSubscription, filters.MinedAndPendingLogsSubscription:
-		eventCh, err = es.client.Subscribe(es.ctx, string(sub.id), sub.event)
-	case filters.LogsSubscription:
-		eventCh, err = es.client.Subscribe(es.ctx, string(sub.id), sub.event)
-	case filters.BlocksSubscription:
-		eventCh, err = es.client.Subscribe(es.ctx, string(sub.id), sub.event)
-	default:
-		err = fmt.Errorf("invalid filter subscription type %d", sub.typ)
-	}
-
-	if err != nil {
-		sub.err <- err
-		return nil, cancelFn, err
-	}
-
-	// wrap events in a go routine to prevent blocking
-	go func() {
-		es.install <- sub
-		<-sub.installed
-	}()
-
-	sub.eventCh = eventCh
-	return sub, cancelFn, nil
-}
-
-// SubscribeLogs creates a subscription that will write all logs matching the
-// given criteria to the given logs channel. Default value for the from and to
-// block is "latest". If the fromBlock > toBlock an error is returned.
-func (es *EventSystem) SubscribeLogs(crit filters.FilterCriteria) (*Subscription, context.CancelFunc, error) {
-	var from, to rpc.BlockNumber
-	if crit.FromBlock == nil {
-		from = rpc.LatestBlockNumber
-	} else {
-		from = rpc.BlockNumber(crit.FromBlock.Int64())
-	}
-	if crit.ToBlock == nil {
-		to = rpc.LatestBlockNumber
-	} else {
-		to = rpc.BlockNumber(crit.ToBlock.Int64())
-	}
-
-	switch {
-	// only interested in pending logs
-	case from == rpc.PendingBlockNumber && to == rpc.PendingBlockNumber:
-		return es.subscribePendingLogs(crit)
-
-	// only interested in new mined logs, mined logs within a specific block range, or
-	// logs from a specific block number to new mined blocks
-	case (from == rpc.LatestBlockNumber && to == rpc.LatestBlockNumber),
-		(from >= 0 && to >= 0 && to >= from):
-		return es.subscribeLogs(crit)
-
-	// interested in mined logs from a specific block number, new logs and pending logs
-	case from >= rpc.LatestBlockNumber && (to == rpc.PendingBlockNumber || to == rpc.LatestBlockNumber):
-		return es.subscribeMinedPendingLogs(crit)
-
-	default:
-		return nil, nil, fmt.Errorf("invalid from and to block combination: from > to (%d > %d)", from, to)
-	}
-}
-
-// subscribeMinedPendingLogs creates a subscription that returned mined and
-// pending logs that match the given criteria.
-func (es *EventSystem) subscribeMinedPendingLogs(crit filters.FilterCriteria) (*Subscription, context.CancelFunc, error) {
-	sub := &Subscription{
-		id:        rpc.NewID(),
-		typ:       filters.MinedAndPendingLogsSubscription,
-		event:     evmEvents,
-		logsCrit:  crit,
-		created:   time.Now().UTC(),
-		logs:      make(chan []*ethtypes.Log),
-		installed: make(chan struct{}, 1),
-		err:       make(chan error, 1),
-	}
-	return es.subscribe(sub)
-}
-
-// subscribeLogs creates a subscription that will write all logs matching the
-// given criteria to the given logs channel.
-func (es *EventSystem) subscribeLogs(crit filters.FilterCriteria) (*Subscription, context.CancelFunc, error) {
-	sub := &Subscription{
-		id:        rpc.NewID(),
-		typ:       filters.LogsSubscription,
-		event:     evmEvents,
-		logsCrit:  crit,
-		created:   time.Now().UTC(),
-		logs:      make(chan []*ethtypes.Log),
-		installed: make(chan struct{}, 1),
-		err:       make(chan error, 1),
-	}
-	return es.subscribe(sub)
-}
-
-// subscribePendingLogs creates a subscription that writes transaction hashes for
-// transactions that enter the transaction pool.
-func (es *EventSystem) subscribePendingLogs(crit filters.FilterCriteria) (*Subscription, context.CancelFunc, error) {
-	sub := &Subscription{
-		id:        rpc.NewID(),
-		typ:       filters.PendingLogsSubscription,
-		event:     evmEvents,
-		logsCrit:  crit,
-		created:   time.Now().UTC(),
-		logs:      make(chan []*ethtypes.Log),
-		installed: make(chan struct{}, 1),
-		err:       make(chan error, 1),
-	}
-	return es.subscribe(sub)
-}
-
-// SubscribeNewHeads subscribes to new block headers events.
-func (es EventSystem) SubscribeNewHeads() (*Subscription, context.CancelFunc, error) {
-	sub := &Subscription{
-		id:        rpc.NewID(),
-		typ:       filters.BlocksSubscription,
-		event:     headerEvents,
-		created:   time.Now().UTC(),
-		headers:   make(chan *ethtypes.Header),
-		installed: make(chan struct{}, 1),
-		err:       make(chan error, 1),
-	}
-	return es.subscribe(sub)
-}
-
-// SubscribePendingTxs subscribes to new pending transactions events from the mempool.
-func (es EventSystem) SubscribePendingTxs() (*Subscription, context.CancelFunc, error) {
-	sub := &Subscription{
-		id:        rpc.NewID(),
-		typ:       filters.PendingTransactionsSubscription,
-		event:     txEvents,
-		created:   time.Now().UTC(),
-		hashes:    make(chan []common.Hash),
-		installed: make(chan struct{}, 1),
-		err:       make(chan error, 1),
-	}
-	return es.subscribe(sub)
-}
-
-type filterIndex map[filters.Type]map[rpc.ID]*Subscription
-
-func (es *EventSystem) handleLogs(ev coretypes.ResultEvent) {
-	data, _ := ev.Data.(tmtypes.EventDataTx)
-	txResponse, err := evmtypes.DecodeTxResponse(data.TxResult.Result.Data)
-	if err != nil {
-		return
-	}
-
-	if len(txResponse.TxLogs.Logs) == 0 {
-		return
-	}
-	for _, f := range es.index[filters.LogsSubscription] {
-		matchedLogs := FilterLogs(txResponse.TxLogs.EthLogs(), f.logsCrit.FromBlock, f.logsCrit.ToBlock, f.logsCrit.Addresses, f.logsCrit.Topics)
-		if len(matchedLogs) > 0 {
-			f.logs <- matchedLogs
-		}
-	}
-}
-
-func (es *EventSystem) handleTxsEvent(ev coretypes.ResultEvent) {
-	data, _ := ev.Data.(tmtypes.EventDataTx)
-	for _, f := range es.index[filters.PendingTransactionsSubscription] {
-		f.hashes <- []common.Hash{common.BytesToHash(tmtypes.Tx(data.Tx).Hash())}
-	}
-}
-
-func (es *EventSystem) handleChainEvent(ev coretypes.ResultEvent) {
-	data, _ := ev.Data.(tmtypes.EventDataNewBlockHeader)
-	for _, f := range es.index[filters.BlocksSubscription] {
-		f.headers <- rpctypes.EthHeaderFromTendermint(data.Header)
-	}
-	// TODO: light client
-}
-
-// eventLoop (un)installs filters and processes mux events.
-func (es *EventSystem) eventLoop() {
-	var (
-		err                                                                           error
-		cancelPendingTxsSubs, cancelLogsSubs, cancelPendingLogsSubs, cancelHeaderSubs context.CancelFunc
-	)
-
-	// Subscribe events
-	es.txsSub, cancelPendingTxsSubs, err = es.SubscribePendingTxs()
-	if err != nil {
-		panic(fmt.Errorf("failed to subscribe pending txs: %w", err))
-	}
-
-	defer cancelPendingTxsSubs()
-
-	es.logsSub, cancelLogsSubs, err = es.SubscribeLogs(filters.FilterCriteria{})
-	if err != nil {
-		panic(fmt.Errorf("failed to subscribe logs: %w", err))
-	}
-
-	defer cancelLogsSubs()
-
-	es.pendingLogsSub, cancelPendingLogsSubs, err = es.subscribePendingLogs(filters.FilterCriteria{})
-	if err != nil {
-		panic(fmt.Errorf("failed to subscribe pending logs: %w", err))
-	}
-
-	defer cancelPendingLogsSubs()
-
-	es.chainSub, cancelHeaderSubs, err = es.SubscribeNewHeads()
-	if err != nil {
-		panic(fmt.Errorf("failed to subscribe headers: %w", err))
-	}
-
-	defer cancelHeaderSubs()
-
-	// Ensure all subscriptions get cleaned up
-	defer func() {
-		es.txsSub.Unsubscribe(es)
-		es.logsSub.Unsubscribe(es)
-		// es.rmLogsSub.Unsubscribe(es)
-		es.pendingLogsSub.Unsubscribe(es)
-		es.chainSub.Unsubscribe(es)
-	}()
-
-	for {
-		select {
-		case txEvent := <-es.txsSub.eventCh:
-			es.handleTxsEvent(txEvent)
-		case headerEv := <-es.chainSub.eventCh:
-			es.handleChainEvent(headerEv)
-		case logsEv := <-es.logsSub.eventCh:
-			es.handleLogs(logsEv)
-		// TODO: figure out how to handle removed logs
-		// case logsEv := <-es.rmLogsSub.eventCh:
-		// 	es.handleLogs(logsEv)
-		case logsEv := <-es.pendingLogsSub.eventCh:
-			es.handleLogs(logsEv)
-
-		case f := <-es.install:
-			if f.typ == filters.MinedAndPendingLogsSubscription {
-				// the type are logs and pending logs subscriptions
-				es.index[filters.LogsSubscription][f.id] = f
-				es.index[filters.PendingLogsSubscription][f.id] = f
-			} else {
-				es.index[f.typ][f.id] = f
-			}
-			close(f.installed)
-
-		case f := <-es.uninstall:
-			if f.typ == filters.MinedAndPendingLogsSubscription {
-				// the type are logs and pending logs subscriptions
-				delete(es.index[filters.LogsSubscription], f.id)
-				delete(es.index[filters.PendingLogsSubscription], f.id)
-			} else {
-				delete(es.index[f.typ], f.id)
-			}
-			close(f.err)
-			// System stopped
-		case <-es.txsSub.Err():
-			return
-		case <-es.logsSub.Err():
-			return
-		// case <-es.rmLogsSub.Err():
-		// 	return
-		case <-es.pendingLogsSub.Err():
-			return
-		case <-es.chainSub.Err():
-			return
-		}
-	}
-	// }()
-}

rpc/namespaces/eth/filters/filters.go

@@ -1,168 +0,0 @@
-package filters
-
-import (
-	"context"
-	"fmt"
-	"math/big"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/core/bloombits"
-	ethtypes "github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/eth/filters"
-
-	rpctypes "github.com/cosmos/ethermint/rpc/types"
-)
-
-// Filter can be used to retrieve and filter logs.
-type Filter struct {
-	backend  Backend
-	criteria filters.FilterCriteria
-	matcher  *bloombits.Matcher
-}
-
-// NewBlockFilter creates a new filter which directly inspects the contents of
-// a block to figure out whether it is interesting or not.
-func NewBlockFilter(backend Backend, criteria filters.FilterCriteria) *Filter {
-	// Create a generic filter and convert it into a block filter
-	return newFilter(backend, criteria, nil)
-}
-
-// NewRangeFilter creates a new filter which uses a bloom filter on blocks to
-// figure out whether a particular block is interesting or not.
-func NewRangeFilter(backend Backend, begin, end int64, addresses []common.Address, topics [][]common.Hash) *Filter {
-	// Flatten the address and topic filter clauses into a single bloombits filter
-	// system. Since the bloombits are not positional, nil topics are permitted,
-	// which get flattened into a nil byte slice.
-	var filtersBz [][][]byte // nolint: prealloc
-	if len(addresses) > 0 {
-		filter := make([][]byte, len(addresses))
-		for i, address := range addresses {
-			filter[i] = address.Bytes()
-		}
-		filtersBz = append(filtersBz, filter)
-	}
-
-	for _, topicList := range topics {
-		filter := make([][]byte, len(topicList))
-		for i, topic := range topicList {
-			filter[i] = topic.Bytes()
-		}
-		filtersBz = append(filtersBz, filter)
-	}
-
-	size, _ := backend.BloomStatus()
-
-	// Create a generic filter and convert it into a range filter
-	criteria := filters.FilterCriteria{
-		FromBlock: big.NewInt(begin),
-		ToBlock:   big.NewInt(end),
-		Addresses: addresses,
-		Topics:    topics,
-	}
-
-	return newFilter(backend, criteria, bloombits.NewMatcher(size, filtersBz))
-}
-
-// newFilter returns a new Filter
-func newFilter(backend Backend, criteria filters.FilterCriteria, matcher *bloombits.Matcher) *Filter {
-	return &Filter{
-		backend:  backend,
-		criteria: criteria,
-		matcher:  matcher,
-	}
-}
-
-// Logs searches the blockchain for matching log entries, returning all from the
-// first block that contains matches, updating the start of the filter accordingly.
-func (f *Filter) Logs(_ context.Context) ([]*ethtypes.Log, error) {
-	logs := []*ethtypes.Log{}
-	var err error
-
-	// If we're doing singleton block filtering, execute and return
-	if f.criteria.BlockHash != nil && f.criteria.BlockHash != (&common.Hash{}) {
-		header, err := f.backend.HeaderByHash(*f.criteria.BlockHash)
-		if err != nil {
-			return nil, err
-		}
-		if header == nil {
-			return nil, fmt.Errorf("unknown block header %s", f.criteria.BlockHash.String())
-		}
-		return f.blockLogs(header)
-	}
-
-	// Figure out the limits of the filter range
-	header, err := f.backend.HeaderByNumber(rpctypes.LatestBlockNumber)
-	if err != nil {
-		return nil, err
-	}
-
-	if header == nil || header.Number == nil {
-		return nil, nil
-	}
-
-	head := header.Number.Int64()
-	if f.criteria.FromBlock.Int64() == -1 {
-		f.criteria.FromBlock = big.NewInt(head)
-	}
-	if f.criteria.ToBlock.Int64() == -1 {
-		f.criteria.ToBlock = big.NewInt(head)
-	}
-
-	for i := f.criteria.FromBlock.Int64(); i <= f.criteria.ToBlock.Int64(); i++ {
-		block, err := f.backend.GetBlockByNumber(rpctypes.BlockNumber(i), true)
-		if err != nil {
-			return logs, err
-		}
-
-		txs, ok := block["transactions"].([]common.Hash)
-		if !ok || len(txs) == 0 {
-			continue
-		}
-
-		logsMatched := f.checkMatches(txs)
-		logs = append(logs, logsMatched...)
-	}
-
-	return logs, nil
-}
-
-// blockLogs returns the logs matching the filter criteria within a single block.
-func (f *Filter) blockLogs(header *ethtypes.Header) ([]*ethtypes.Log, error) {
-	if !bloomFilter(header.Bloom, f.criteria.Addresses, f.criteria.Topics) {
-		return []*ethtypes.Log{}, nil
-	}
-
-	logsList, err := f.backend.GetLogs(header.Hash())
-	if err != nil {
-		return []*ethtypes.Log{}, err
-	}
-
-	var unfiltered []*ethtypes.Log // nolint: prealloc
-	for _, logs := range logsList {
-		unfiltered = append(unfiltered, logs...)
-	}
-	logs := FilterLogs(unfiltered, nil, nil, f.criteria.Addresses, f.criteria.Topics)
-	if len(logs) == 0 {
-		return []*ethtypes.Log{}, nil
-	}
-	return logs, nil
-}
-
-// checkMatches checks if the logs from the a list of transactions transaction
-// contain any log events that  match the filter criteria. This function is
-// called when the bloom filter signals a potential match.
-func (f *Filter) checkMatches(transactions []common.Hash) []*ethtypes.Log {
-	unfiltered := []*ethtypes.Log{}
-	for _, tx := range transactions {
-		logs, err := f.backend.GetTransactionLogs(tx)
-		if err != nil {
-			// ignore error if transaction didn't set any logs (eg: when tx type is not
-			// MsgEthereumTx or MsgEthermint)
-			continue
-		}
-
-		unfiltered = append(unfiltered, logs...)
-	}
-
-	return FilterLogs(unfiltered, f.criteria.FromBlock, f.criteria.ToBlock, f.criteria.Addresses, f.criteria.Topics)
-}

rpc/namespaces/eth/filters/subscription.go

@@ -1,72 +0,0 @@
-package filters
-
-import (
-	"log"
-	"time"
-
-	"github.com/ethereum/go-ethereum/common"
-	ethtypes "github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/eth/filters"
-	"github.com/ethereum/go-ethereum/rpc"
-
-	coretypes "github.com/tendermint/tendermint/rpc/core/types"
-)
-
-// Subscription defines a wrapper for the private subscription
-type Subscription struct {
-	id        rpc.ID
-	typ       filters.Type
-	event     string
-	created   time.Time
-	logsCrit  filters.FilterCriteria
-	logs      chan []*ethtypes.Log
-	hashes    chan []common.Hash
-	headers   chan *ethtypes.Header
-	installed chan struct{} // closed when the filter is installed
-	eventCh   <-chan coretypes.ResultEvent
-	err       chan error
-}
-
-// ID returns the underlying subscription RPC identifier.
-func (s Subscription) ID() rpc.ID {
-	return s.id
-}
-
-// Unsubscribe to the current subscription from Tendermint Websocket. It sends an error to the
-// subscription error channel if unsubscription fails.
-func (s *Subscription) Unsubscribe(es *EventSystem) {
-	if err := es.client.Unsubscribe(es.ctx, string(s.ID()), s.event); err != nil {
-		s.err <- err
-	}
-
-	go func() {
-		defer func() {
-			log.Println("successfully unsubscribed to event", s.event)
-		}()
-
-	uninstallLoop:
-		for {
-			// write uninstall request and consume logs/hashes. This prevents
-			// the eventLoop broadcast method to deadlock when writing to the
-			// filter event channel while the subscription loop is waiting for
-			// this method to return (and thus not reading these events).
-			select {
-			case es.uninstall <- s:
-				break uninstallLoop
-			case <-s.logs:
-			case <-s.hashes:
-			case <-s.headers:
-			}
-		}
-	}()
-}
-
-// Err returns the error channel
-func (s *Subscription) Err() <-chan error {
-	return s.err
-}
-
-// Event returns the tendermint result event channel
-func (s *Subscription) Event() <-chan coretypes.ResultEvent {
-	return s.eventCh
-}

rpc/namespaces/eth/filters/utils.go

@@ -1,102 +0,0 @@
-package filters
-
-import (
-	"math/big"
-
-	"github.com/ethereum/go-ethereum/common"
-	ethtypes "github.com/ethereum/go-ethereum/core/types"
-)
-
-// filterLogs creates a slice of logs matching the given criteria.
-// [] -> anything
-// [A] -> A in first position of log topics, anything after
-// [null, B] -> anything in first position, B in second position
-// [A, B] -> A in first position and B in second position
-// [[A, B], [A, B]] -> A or B in first position, A or B in second position
-func FilterLogs(logs []*ethtypes.Log, fromBlock, toBlock *big.Int, addresses []common.Address, topics [][]common.Hash) []*ethtypes.Log {
-	var ret []*ethtypes.Log
-Logs:
-	for _, log := range logs {
-		if fromBlock != nil && fromBlock.Int64() >= 0 && fromBlock.Uint64() > log.BlockNumber {
-			continue
-		}
-		if toBlock != nil && toBlock.Int64() >= 0 && toBlock.Uint64() < log.BlockNumber {
-			continue
-		}
-		if len(addresses) > 0 && !includes(addresses, log.Address) {
-			continue
-		}
-		// If the to filtered topics is greater than the amount of topics in logs, skip.
-		if len(topics) > len(log.Topics) {
-			continue
-		}
-		for i, sub := range topics {
-			match := len(sub) == 0 // empty rule set == wildcard
-			for _, topic := range sub {
-				if log.Topics[i] == topic {
-					match = true
-					break
-				}
-			}
-			if !match {
-				continue Logs
-			}
-		}
-		ret = append(ret, log)
-	}
-	return ret
-}
-
-func includes(addresses []common.Address, a common.Address) bool {
-	for _, addr := range addresses {
-		if addr == a {
-			return true
-		}
-	}
-
-	return false
-}
-
-func bloomFilter(bloom ethtypes.Bloom, addresses []common.Address, topics [][]common.Hash) bool {
-	var included bool
-	if len(addresses) > 0 {
-		for _, addr := range addresses {
-			if ethtypes.BloomLookup(bloom, addr) {
-				included = true
-				break
-			}
-		}
-		if !included {
-			return false
-		}
-	}
-
-	for _, sub := range topics {
-		included = len(sub) == 0 // empty rule set == wildcard
-		for _, topic := range sub {
-			if ethtypes.BloomLookup(bloom, topic) {
-				included = true
-				break
-			}
-		}
-	}
-	return included
-}
-
-// returnHashes is a helper that will return an empty hash array case the given hash array is nil,
-// otherwise the given hashes array is returned.
-func returnHashes(hashes []common.Hash) []common.Hash {
-	if hashes == nil {
-		return []common.Hash{}
-	}
-	return hashes
-}
-
-// returnLogs is a helper that will return an empty log array in case the given logs array is nil,
-// otherwise the given logs array is returned.
-func returnLogs(logs []*ethtypes.Log) []*ethtypes.Log {
-	if logs == nil {
-		return []*ethtypes.Log{}
-	}
-	return logs
-}

rpc/namespaces/personal/api.go

@@ -1,277 +0,0 @@
-package personal
-
-import (
-	"bytes"
-	"context"
-	"fmt"
-	"os"
-	"time"
-
-	"github.com/cosmos/ethermint/crypto/hd"
-	ethermint "github.com/cosmos/ethermint/types"
-	"github.com/tendermint/tendermint/libs/log"
-
-	sdkcrypto "github.com/cosmos/cosmos-sdk/crypto"
-	"github.com/cosmos/cosmos-sdk/crypto/keyring"
-
-	"github.com/ethereum/go-ethereum/accounts"
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/common/hexutil"
-	"github.com/ethereum/go-ethereum/crypto"
-
-	"github.com/cosmos/ethermint/crypto/ethsecp256k1"
-	"github.com/cosmos/ethermint/rpc/namespaces/eth"
-	rpctypes "github.com/cosmos/ethermint/rpc/types"
-)
-
-// PrivateAccountAPI is the personal_ prefixed set of APIs in the Web3 JSON-RPC spec.
-type PrivateAccountAPI struct {
-	ethAPI   *eth.PublicEthereumAPI
-	logger   log.Logger
-	keyInfos []keyring.Info // all keys, both locked and unlocked. unlocked keys are stored in ethAPI.keys
-}
-
-// NewAPI creates an instance of the public Personal Eth API.
-func NewAPI(ethAPI *eth.PublicEthereumAPI) *PrivateAccountAPI {
-	api := &PrivateAccountAPI{
-		ethAPI: ethAPI,
-		logger: log.NewTMLogger(log.NewSyncWriter(os.Stdout)).With("module", "json-rpc", "namespace", "personal"),
-	}
-
-	err := api.ethAPI.GetKeyringInfo()
-	if err != nil {
-		return api
-	}
-
-	api.keyInfos, err = api.ethAPI.ClientCtx().Keyring.List()
-	if err != nil {
-		return api
-	}
-
-	return api
-}
-
-// ImportRawKey armors and encrypts a given raw hex encoded ECDSA key and stores it into the key directory.
-// The name of the key will have the format "personal_<length-keys>", where <length-keys> is the total number of
-// keys stored on the keyring.
-// NOTE: The key will be both armored and encrypted using the same passphrase.
-func (api *PrivateAccountAPI) ImportRawKey(privkey, password string) (common.Address, error) {
-	api.logger.Debug("personal_importRawKey")
-	priv, err := crypto.HexToECDSA(privkey)
-	if err != nil {
-		return common.Address{}, err
-	}
-
-	privKey := &ethsecp256k1.PrivKey{Key: crypto.FromECDSA(priv)}
-
-	armor := sdkcrypto.EncryptArmorPrivKey(privKey, password, ethsecp256k1.KeyType)
-
-	// ignore error as we only care about the length of the list
-	list, _ := api.ethAPI.ClientCtx().Keyring.List()
-	privKeyName := fmt.Sprintf("personal_%d", len(list))
-
-	if err := api.ethAPI.ClientCtx().Keyring.ImportPrivKey(privKeyName, armor, password); err != nil {
-		return common.Address{}, err
-	}
-
-	addr := common.BytesToAddress(privKey.PubKey().Address().Bytes())
-
-	info, err := api.ethAPI.ClientCtx().Keyring.Key(privKeyName)
-	if err != nil {
-		return common.Address{}, err
-	}
-
-	// append key and info to be able to lock and list the account
-	// api.ethAPI.keys = append(api.ethAPI.keys, privKey)
-	api.keyInfos = append(api.keyInfos, info)
-	api.logger.Info("key successfully imported", "name", privKeyName, "address", addr.String())
-
-	return addr, nil
-}
-
-// ListAccounts will return a list of addresses for accounts this node manages.
-func (api *PrivateAccountAPI) ListAccounts() ([]common.Address, error) {
-	api.logger.Debug("personal_listAccounts")
-	addrs := []common.Address{}
-	for _, info := range api.keyInfos {
-		addressBytes := info.GetPubKey().Address().Bytes()
-		addrs = append(addrs, common.BytesToAddress(addressBytes))
-	}
-
-	return addrs, nil
-}
-
-// LockAccount will lock the account associated with the given address when it's unlocked.
-// It removes the key corresponding to the given address from the API's local keys.
-func (api *PrivateAccountAPI) LockAccount(address common.Address) bool {
-	api.logger.Debug("personal_lockAccount", "address", address.String())
-
-	keys := api.ethAPI.GetKeys()
-	for i, key := range keys {
-		if !bytes.Equal(key.PubKey().Address().Bytes(), address.Bytes()) {
-			continue
-		}
-
-		tmp := make([]ethsecp256k1.PrivKey, len(keys)-1)
-		copy(tmp[:i], keys[:i])
-		copy(tmp[i:], keys[i+1:])
-		api.ethAPI.SetKeys(tmp)
-
-		api.logger.Debug("account locked", "address", address.String())
-		return true
-	}
-
-	return false
-}
-
-// NewAccount will create a new account and returns the address for the new account.
-func (api *PrivateAccountAPI) NewAccount(password string) (common.Address, error) {
-	api.logger.Debug("personal_newAccount")
-
-	name := "key_" + time.Now().UTC().Format(time.RFC3339)
-	info, _, err := api.ethAPI.ClientCtx().Keyring.NewMnemonic(name, keyring.English, ethermint.BIP44HDPath, hd.EthSecp256k1)
-	if err != nil {
-		return common.Address{}, err
-	}
-
-	// TODO: rpc_test_fix: if we use NewMnemonic, it will create an account automatically, and
-	// the new account encrypted with default empty string in cosmos-SDK,
-	// if we create mnemonic then create new account, we basically generated two accounts
-
-	// nolint
-	//name = "key_" + time.Now().UTC().Format(time.RFC3339)
-	//info, err := api.ethAPI.ClientCtx().Keyring.NewAccount(name, mnemonic, password, ethermint.BIP44HDPath, hd.EthSecp256k1)
-	//if err != nil {
-	//	return common.Address{}, err
-	//}
-	//
-	//// encrypt the key info with given password
-	//armor, err := api.ethAPI.ClientCtx().Keyring.ExportPrivKeyArmor(info.GetName(), password)
-	//if err != nil {
-	//	return common.Address{}, err
-	//}
-
-	api.keyInfos = append(api.keyInfos, info)
-
-	addr := common.BytesToAddress(info.GetPubKey().Address().Bytes())
-	api.logger.Info("Your new key was generated", "address", addr.String())
-	api.logger.Info("Please backup your key file!", "path", os.Getenv("HOME")+"/.ethermint/"+name)
-	api.logger.Info("Please remember your password!")
-	return addr, nil
-}
-
-// UnlockAccount will unlock the account associated with the given address with
-// the given password for duration seconds. If duration is nil it will use a
-// default of 300 seconds. It returns an indication if the account was unlocked.
-// It exports the private key corresponding to the given address from the keyring and stores it in the API's local keys.
-func (api *PrivateAccountAPI) UnlockAccount(_ context.Context, addr common.Address, password string, _ *uint64) (bool, error) { // nolint: interfacer
-	api.logger.Debug("personal_unlockAccount", "address", addr.String())
-	// TODO: use duration
-
-	var keyInfo keyring.Info
-
-	for _, info := range api.keyInfos {
-		addressBytes := info.GetPubKey().Address().Bytes()
-		if bytes.Equal(addressBytes, addr[:]) {
-			keyInfo = info
-			break
-		}
-	}
-
-	if keyInfo == nil {
-		return false, fmt.Errorf("cannot find key with given address %s", addr.String())
-	}
-
-	// exporting private key only works on local keys
-	if keyInfo.GetType() != keyring.TypeLocal {
-		return false, fmt.Errorf("key type must be %s, got %s", keyring.TypeLedger.String(), keyInfo.GetType().String())
-	}
-
-	// TODO: rpc_test_fix: password is used for encrypt and then decrypt, what's the point of locking the account ?
-	armor, err := api.ethAPI.ClientCtx().Keyring.ExportPrivKeyArmor(keyInfo.GetName(), password)
-	if err != nil {
-		return false, err
-	}
-
-	privKey, algo, err := sdkcrypto.UnarmorDecryptPrivKey(armor, password)
-	if err != nil {
-		return false, err
-	}
-
-	// TODO: rpc_test_fix: we need to support both ethsecp256k1 and secp256k1, however, cosmos-SDK only support secp256k1 when init with keys add CLI
-	// so that the very first account has key type as secp256k1, thus, we need to support both key types here
-	if algo != ethsecp256k1.KeyType {
-		return false, fmt.Errorf("invalid key algorithm, got %s, expected %s", algo, ethsecp256k1.KeyType)
-	}
-
-	ethermintPrivKey, ok := privKey.(*ethsecp256k1.PrivKey)
-	if !ok {
-		return false, fmt.Errorf("invalid private key type %T, expected %T", privKey, &ethsecp256k1.PrivKey{})
-	}
-
-	api.ethAPI.SetKeys(append(api.ethAPI.GetKeys(), *ethermintPrivKey))
-	api.logger.Debug("account unlocked", "address", addr.String())
-	return true, nil
-}
-
-// SendTransaction will create a transaction from the given arguments and
-// tries to sign it with the key associated with args.To. If the given password isn't
-// able to decrypt the key it fails.
-func (api *PrivateAccountAPI) SendTransaction(_ context.Context, args rpctypes.SendTxArgs, _ string) (common.Hash, error) {
-	return api.ethAPI.SendTransaction(args)
-}
-
-// Sign calculates an Ethereum ECDSA signature for:
-// keccak256("\x19Ethereum Signed Message:\n" + len(message) + message))
-//
-// Note, the produced signature conforms to the secp256k1 curve R, S and V values,
-// where the V value will be 27 or 28 for legacy reasons.
-//
-// The key used to calculate the signature is decrypted with the given password.
-//
-// https://github.com/ethereum/go-ethereum/wiki/Management-APIs#personal_sign
-func (api *PrivateAccountAPI) Sign(_ context.Context, data hexutil.Bytes, addr common.Address, _ string) (hexutil.Bytes, error) {
-	api.logger.Debug("personal_sign", "data", data, "address", addr.String())
-
-	// TODO: rpc_test_fix: because the default account is secp256k1, it can not be unlocked and put into api.ethAPI array
-	key, ok := rpctypes.GetKeyByAddress(api.ethAPI.GetKeys(), addr)
-	if !ok {
-		return nil, fmt.Errorf("cannot find key with address %s", addr.String())
-	}
-
-	sig, err := crypto.Sign(accounts.TextHash(data), key.ToECDSA())
-	if err != nil {
-		return nil, err
-	}
-
-	sig[crypto.RecoveryIDOffset] += 27 // transform V from 0/1 to 27/28
-	return sig, nil
-}
-
-// EcRecover returns the address for the account that was used to create the signature.
-// Note, this function is compatible with eth_sign and personal_sign. As such it recovers
-// the address of:
-// hash = keccak256("\x19Ethereum Signed Message:\n"${message length}${message})
-// addr = ecrecover(hash, signature)
-//
-// Note, the signature must conform to the secp256k1 curve R, S and V values, where
-// the V value must be 27 or 28 for legacy reasons.
-//
-// https://github.com/ethereum/go-ethereum/wiki/Management-APIs#personal_ecRecove
-func (api *PrivateAccountAPI) EcRecover(_ context.Context, data, sig hexutil.Bytes) (common.Address, error) {
-	api.logger.Debug("personal_ecRecover", "data", data, "sig", sig)
-
-	if len(sig) != crypto.SignatureLength {
-		return common.Address{}, fmt.Errorf("signature must be %d bytes long", crypto.SignatureLength)
-	}
-	if sig[crypto.RecoveryIDOffset] != 27 && sig[crypto.RecoveryIDOffset] != 28 {
-		return common.Address{}, fmt.Errorf("invalid Ethereum signature (V is not 27 or 28)")
-	}
-	sig[crypto.RecoveryIDOffset] -= 27 // Transform yellow paper V from 27/28 to 0/1
-
-	pubkey, err := crypto.SigToPub(accounts.TextHash(data), sig)
-	if err != nil {
-		return common.Address{}, err
-	}
-	return crypto.PubkeyToAddress(*pubkey), nil
-}

rpc/websockets/pubsub_api.go

@@ -1,322 +0,0 @@
-package websockets
-
-import (
-	"fmt"
-	"os"
-	"sync"
-
-	"github.com/gorilla/websocket"
-
-	"github.com/tendermint/tendermint/libs/log"
-	coretypes "github.com/tendermint/tendermint/rpc/core/types"
-	tmtypes "github.com/tendermint/tendermint/types"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/eth/filters"
-	"github.com/ethereum/go-ethereum/rpc"
-
-	"github.com/cosmos/cosmos-sdk/client"
-
-	rpcfilters "github.com/cosmos/ethermint/rpc/namespaces/eth/filters"
-	rpctypes "github.com/cosmos/ethermint/rpc/types"
-	evmtypes "github.com/cosmos/ethermint/x/evm/types"
-)
-
-// PubSubAPI is the eth_ prefixed set of APIs in the Web3 JSON-RPC spec
-type PubSubAPI struct {
-	clientCtx client.Context
-	events    *rpcfilters.EventSystem
-	filtersMu sync.Mutex
-	filters   map[rpc.ID]*wsSubscription
-	logger    log.Logger
-}
-
-// NewAPI creates an instance of the ethereum PubSub API.
-func NewAPI(clientCtx client.Context) *PubSubAPI {
-	return &PubSubAPI{
-		clientCtx: clientCtx,
-		events:    rpcfilters.NewEventSystem(clientCtx.Client),
-		filters:   make(map[rpc.ID]*wsSubscription),
-		logger:    log.NewTMLogger(log.NewSyncWriter(os.Stdout)).With("module", "websocket-client"),
-	}
-}
-
-func (api *PubSubAPI) subscribe(conn *websocket.Conn, params []interface{}) (rpc.ID, error) {
-	method, ok := params[0].(string)
-	if !ok {
-		return "0", fmt.Errorf("invalid parameters")
-	}
-
-	switch method {
-	case "newHeads":
-		// TODO: handle extra params
-		return api.subscribeNewHeads(conn)
-	case "logs":
-		if len(params) > 1 {
-			return api.subscribeLogs(conn, params[1])
-		}
-
-		return api.subscribeLogs(conn, nil)
-	case "newPendingTransactions":
-		return api.subscribePendingTransactions(conn)
-	case "syncing":
-		return api.subscribeSyncing(conn)
-	default:
-		return "0", fmt.Errorf("unsupported method %s", method)
-	}
-}
-
-func (api *PubSubAPI) unsubscribe(id rpc.ID) bool {
-	api.filtersMu.Lock()
-	defer api.filtersMu.Unlock()
-
-	if api.filters[id] == nil {
-		return false
-	}
-
-	close(api.filters[id].unsubscribed)
-	delete(api.filters, id)
-	return true
-}
-
-// unsubscribeAll unsubscribes all the current subscriptions
-func (api *PubSubAPI) unsubscribeAll() bool { // nolint: unused
-	api.filtersMu.Lock()
-	defer api.filtersMu.Unlock()
-
-	for id, filter := range api.filters {
-		close(filter.unsubscribed)
-		delete(api.filters, id)
-	}
-
-	return true
-}
-
-func (api *PubSubAPI) subscribeNewHeads(conn *websocket.Conn) (rpc.ID, error) {
-	sub, _, err := api.events.SubscribeNewHeads()
-	if err != nil {
-		return "", fmt.Errorf("error creating block filter: %s", err.Error())
-	}
-
-	unsubscribed := make(chan struct{})
-	api.filtersMu.Lock()
-	api.filters[sub.ID()] = &wsSubscription{
-		sub:          sub,
-		conn:         conn,
-		unsubscribed: unsubscribed,
-	}
-	api.filtersMu.Unlock()
-
-	go func(headersCh <-chan coretypes.ResultEvent, errCh <-chan error) {
-		for {
-			select {
-			case event := <-headersCh:
-				data, _ := event.Data.(tmtypes.EventDataNewBlockHeader)
-				header := rpctypes.EthHeaderFromTendermint(data.Header)
-
-				api.filtersMu.Lock()
-				if f, found := api.filters[sub.ID()]; found {
-					// write to ws conn
-					res := &SubscriptionNotification{
-						Jsonrpc: "2.0",
-						Method:  "eth_subscription",
-						Params: &SubscriptionResult{
-							Subscription: sub.ID(),
-							Result:       header,
-						},
-					}
-
-					err = f.conn.WriteJSON(res)
-					if err != nil {
-						api.logger.Error("error writing header")
-					}
-				}
-				api.filtersMu.Unlock()
-			case <-errCh:
-				api.filtersMu.Lock()
-				delete(api.filters, sub.ID())
-				api.filtersMu.Unlock()
-				return
-			case <-unsubscribed:
-				return
-			}
-		}
-	}(sub.Event(), sub.Err())
-
-	return sub.ID(), nil
-}
-
-func (api *PubSubAPI) subscribeLogs(conn *websocket.Conn, extra interface{}) (rpc.ID, error) {
-	crit := filters.FilterCriteria{}
-
-	if extra != nil {
-		params, ok := extra.(map[string]interface{})
-		if !ok {
-			return "", fmt.Errorf("invalid criteria")
-		}
-
-		if params["address"] != nil {
-			address, ok := params["address"].(string)
-			addresses, sok := params["address"].([]interface{})
-			if !ok && !sok {
-				return "", fmt.Errorf("invalid address; must be address or array of addresses")
-			}
-
-			if ok {
-				crit.Addresses = []common.Address{common.HexToAddress(address)}
-			}
-
-			if sok {
-				crit.Addresses = []common.Address{}
-				for _, addr := range addresses {
-					address, ok := addr.(string)
-					if !ok {
-						return "", fmt.Errorf("invalid address")
-					}
-
-					crit.Addresses = append(crit.Addresses, common.HexToAddress(address))
-				}
-			}
-		}
-
-		if params["topics"] != nil {
-			topics, ok := params["topics"].([]interface{})
-			if !ok {
-				return "", fmt.Errorf("invalid topics")
-			}
-
-			crit.Topics = [][]common.Hash{}
-			for _, topic := range topics {
-				tstr, ok := topic.(string)
-				if !ok {
-					return "", fmt.Errorf("invalid topics")
-				}
-
-				h := common.HexToHash(tstr)
-				crit.Topics = append(crit.Topics, []common.Hash{h})
-			}
-		}
-	}
-
-	sub, _, err := api.events.SubscribeLogs(crit)
-	if err != nil {
-		return rpc.ID(""), err
-	}
-
-	unsubscribed := make(chan struct{})
-	api.filtersMu.Lock()
-	api.filters[sub.ID()] = &wsSubscription{
-		sub:          sub,
-		conn:         conn,
-		unsubscribed: unsubscribed,
-	}
-	api.filtersMu.Unlock()
-
-	go func(ch <-chan coretypes.ResultEvent, errCh <-chan error) {
-		for {
-			select {
-			case event := <-ch:
-				dataTx, ok := event.Data.(tmtypes.EventDataTx)
-				if !ok {
-					err = fmt.Errorf("invalid event data %T, expected EventDataTx", event.Data)
-					return
-				}
-
-				var resultData evmtypes.MsgEthereumTxResponse
-				resultData, err = evmtypes.DecodeTxResponse(dataTx.TxResult.Result.Data)
-				if err != nil {
-					return
-				}
-
-				logs := rpcfilters.FilterLogs(resultData.TxLogs.EthLogs(), crit.FromBlock, crit.ToBlock, crit.Addresses, crit.Topics)
-
-				api.filtersMu.Lock()
-				if f, found := api.filters[sub.ID()]; found {
-					// write to ws conn
-					res := &SubscriptionNotification{
-						Jsonrpc: "2.0",
-						Method:  "eth_subscription",
-						Params: &SubscriptionResult{
-							Subscription: sub.ID(),
-							Result:       logs,
-						},
-					}
-
-					err = f.conn.WriteJSON(res)
-				}
-				api.filtersMu.Unlock()
-
-				if err != nil {
-					err = fmt.Errorf("failed to write header: %w", err)
-					return
-				}
-			case <-errCh:
-				api.filtersMu.Lock()
-				delete(api.filters, sub.ID())
-				api.filtersMu.Unlock()
-				return
-			case <-unsubscribed:
-				return
-			}
-		}
-	}(sub.Event(), sub.Err())
-
-	return sub.ID(), nil
-}
-
-func (api *PubSubAPI) subscribePendingTransactions(conn *websocket.Conn) (rpc.ID, error) {
-	sub, _, err := api.events.SubscribePendingTxs()
-	if err != nil {
-		return "", fmt.Errorf("error creating block filter: %s", err.Error())
-	}
-
-	unsubscribed := make(chan struct{})
-	api.filtersMu.Lock()
-	api.filters[sub.ID()] = &wsSubscription{
-		sub:          sub,
-		conn:         conn,
-		unsubscribed: unsubscribed,
-	}
-	api.filtersMu.Unlock()
-
-	go func(txsCh <-chan coretypes.ResultEvent, errCh <-chan error) {
-		for {
-			select {
-			case ev := <-txsCh:
-				data, _ := ev.Data.(tmtypes.EventDataTx)
-				txHash := common.BytesToHash(tmtypes.Tx(data.Tx).Hash())
-
-				api.filtersMu.Lock()
-				if f, found := api.filters[sub.ID()]; found {
-					// write to ws conn
-					res := &SubscriptionNotification{
-						Jsonrpc: "2.0",
-						Method:  "eth_subscription",
-						Params: &SubscriptionResult{
-							Subscription: sub.ID(),
-							Result:       txHash,
-						},
-					}
-
-					err = f.conn.WriteJSON(res)
-				}
-				api.filtersMu.Unlock()
-
-				if err != nil {
-					err = fmt.Errorf("failed to write header: %w", err)
-					return
-				}
-			case <-errCh:
-				api.filtersMu.Lock()
-				delete(api.filters, sub.ID())
-				api.filtersMu.Unlock()
-			}
-		}
-	}(sub.Event(), sub.Err())
-
-	return sub.ID(), nil
-}
-
-func (api *PubSubAPI) subscribeSyncing(conn *websocket.Conn) (rpc.ID, error) {
-	return "", nil
-}

rpc/websockets/server.go

@@ -1,204 +0,0 @@
-package websockets
-
-import (
-	"bufio"
-	"bytes"
-	"encoding/json"
-	"fmt"
-	"io/ioutil"
-	"math/big"
-	"net"
-	"net/http"
-	"os"
-	"strings"
-
-	"github.com/gorilla/websocket"
-
-	"github.com/tendermint/tendermint/libs/log"
-
-	"github.com/ethereum/go-ethereum/rpc"
-
-	"github.com/cosmos/cosmos-sdk/client"
-	"github.com/cosmos/cosmos-sdk/types/rest"
-)
-
-// Server defines a server that handles Ethereum websockets.
-type Server struct {
-	Address string
-	api     *PubSubAPI
-	logger  log.Logger
-}
-
-// NewServer creates a new websocket server instance.
-func NewServer(clientCtx client.Context) *Server {
-	return &Server{
-		Address: "",
-		api:     NewAPI(clientCtx),
-		logger:  log.NewTMLogger(log.NewSyncWriter(os.Stdout)).With("module", "websocket-server"),
-	}
-}
-
-func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	var upgrader = websocket.Upgrader{
-		CheckOrigin: func(r *http.Request) bool {
-			return true
-		},
-	}
-
-	wsConn, err := upgrader.Upgrade(w, r, nil)
-	if err != nil {
-		err := fmt.Errorf("websocket upgrade failed: %w", err)
-		rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error())
-		return
-	}
-
-	s.readLoop(wsConn)
-}
-
-func (s *Server) sendErrResponse(conn *websocket.Conn, msg string) {
-	res := &ErrorResponseJSON{
-		Jsonrpc: "2.0",
-		Error: &ErrorMessageJSON{
-			Code:    big.NewInt(-32600),
-			Message: msg,
-		},
-		ID: nil,
-	}
-	err := conn.WriteJSON(res)
-	if err != nil {
-		s.logger.Error("websocket failed write message", "error", err)
-	}
-}
-
-func (s *Server) readLoop(wsConn *websocket.Conn) {
-	for {
-		_, mb, err := wsConn.ReadMessage()
-		if err != nil {
-			_ = wsConn.Close()
-			s.logger.Error("failed to read message; error", err)
-			return
-		}
-
-		var msg map[string]interface{}
-		err = json.Unmarshal(mb, &msg)
-		if err != nil {
-			s.sendErrResponse(wsConn, "invalid request")
-			continue
-		}
-
-		// check if method == eth_subscribe or eth_unsubscribe
-		method := msg["method"]
-		if method.(string) == "eth_subscribe" {
-			params := msg["params"].([]interface{})
-			if len(params) == 0 {
-				s.sendErrResponse(wsConn, "invalid parameters")
-				continue
-			}
-
-			id, err := s.api.subscribe(wsConn, params)
-			if err != nil {
-				s.sendErrResponse(wsConn, err.Error())
-				continue
-			}
-
-			res := &SubscriptionResponseJSON{
-				Jsonrpc: "2.0",
-				ID:      1,
-				Result:  id,
-			}
-
-			err = wsConn.WriteJSON(res)
-			if err != nil {
-				s.logger.Error("failed to write json response", err)
-				continue
-			}
-
-			continue
-		} else if method.(string) == "eth_unsubscribe" {
-			ids, ok := msg["params"].([]interface{})
-			if _, idok := ids[0].(string); !ok || !idok {
-				s.sendErrResponse(wsConn, "invalid parameters")
-				continue
-			}
-
-			ok = s.api.unsubscribe(rpc.ID(ids[0].(string)))
-			res := &SubscriptionResponseJSON{
-				Jsonrpc: "2.0",
-				ID:      1,
-				Result:  ok,
-			}
-
-			err = wsConn.WriteJSON(res)
-			if err != nil {
-				s.logger.Error("failed to write json response", err)
-				continue
-			}
-
-			continue
-		}
-
-		// otherwise, call the usual rpc server to respond
-		err = s.tcpGetAndSendResponse(wsConn, mb)
-		if err != nil {
-			s.sendErrResponse(wsConn, err.Error())
-		}
-	}
-}
-
-// tcpGetAndSendResponse connects to the rest-server over tcp, posts a JSON-RPC request, and sends the response
-// to the client over websockets
-func (s *Server) tcpGetAndSendResponse(conn *websocket.Conn, mb []byte) error {
-	addr := strings.Split(s.Address, "tcp://")
-	if len(addr) != 2 {
-		return fmt.Errorf("invalid laddr %s", s.Address)
-	}
-
-	tcpConn, err := net.Dial("tcp", addr[1])
-	if err != nil {
-		return fmt.Errorf("cannot connect to %s; %s", s.Address, err)
-	}
-
-	buf := &bytes.Buffer{}
-	_, err = buf.Write(mb)
-	if err != nil {
-		return fmt.Errorf("failed to write message; %s", err)
-	}
-
-	req, err := http.NewRequest("POST", s.Address, buf)
-	if err != nil {
-		return fmt.Errorf("failed to request; %s", err)
-	}
-
-	req.Header.Set("Content-Type", "application/json;")
-	err = req.Write(tcpConn)
-	if err != nil {
-		return fmt.Errorf("failed to write to rest-server; %s", err)
-	}
-
-	respBytes, err := ioutil.ReadAll(tcpConn)
-	if err != nil {
-		return fmt.Errorf("error reading response from rest-server; %s", err)
-	}
-
-	respbuf := &bytes.Buffer{}
-	respbuf.Write(respBytes)
-	resp, err := http.ReadResponse(bufio.NewReader(respbuf), req)
-	if err != nil {
-		return fmt.Errorf("could not read response; %s", err)
-	}
-
-	defer resp.Body.Close()
-
-	body, err := ioutil.ReadAll(resp.Body)
-	if err != nil {
-		return fmt.Errorf("could not read body from response; %s", err)
-	}
-
-	var wsSend interface{}
-	err = json.Unmarshal(body, &wsSend)
-	if err != nil {
-		return fmt.Errorf("failed to unmarshal rest-server response; %s", err)
-	}
-
-	return conn.WriteJSON(wsSend)
-}

rpc/websockets/types.go

@@ -1,45 +0,0 @@
-package websockets
-
-import (
-	"math/big"
-
-	"github.com/gorilla/websocket"
-
-	"github.com/ethereum/go-ethereum/rpc"
-
-	rpcfilters "github.com/cosmos/ethermint/rpc/namespaces/eth/filters"
-)
-
-type SubscriptionResponseJSON struct {
-	Jsonrpc string      `json:"jsonrpc"`
-	Result  interface{} `json:"result"`
-	ID      float64     `json:"id"`
-}
-
-type SubscriptionNotification struct {
-	Jsonrpc string              `json:"jsonrpc"`
-	Method  string              `json:"method"`
-	Params  *SubscriptionResult `json:"params"`
-}
-
-type SubscriptionResult struct {
-	Subscription rpc.ID      `json:"subscription"`
-	Result       interface{} `json:"result"`
-}
-
-type ErrorResponseJSON struct {
-	Jsonrpc string            `json:"jsonrpc"`
-	Error   *ErrorMessageJSON `json:"error"`
-	ID      *big.Int          `json:"id"`
-}
-
-type ErrorMessageJSON struct {
-	Code    *big.Int `json:"code"`
-	Message string   `json:"message"`
-}
-
-type wsSubscription struct {
-	sub          *rpcfilters.Subscription
-	unsubscribed chan struct{} // closed when unsubscribing
-	conn         *websocket.Conn
-}

third_party/proto/google/protobuf/any.proto

@@ -89,7 +89,7 @@ option objc_class_prefix = "GPB";
 // The pack methods provided by protobuf library will by default use
 // 'type.googleapis.com/full.type.name' as the type URL and the unpack
 // methods only use the fully qualified type name after the last '/'
-// in the type URL, for example "foo.bar.com/modules/y.z" will yield type
+// in the type URL, for example "foo.bar.com/x/y.z" will yield type
 // name "y.z".
 //
 //

version/version.go

@@ -0,0 +1,35 @@
+package version
+
+import (
+	"fmt"
+	"runtime"
+)
+
+var (
+	AppVersion = ""
+	GitCommit  = ""
+	BuildDate  = ""
+
+	GoVersion = ""
+	GoArch    = ""
+)
+
+func init() {
+	if len(AppVersion) == 0 {
+		AppVersion = "dev"
+	}
+
+	GoVersion = runtime.Version()
+	GoArch = runtime.GOARCH
+}
+
+func Version() string {
+	return fmt.Sprintf(
+		"Version %s (%s)\nCompiled at %s using Go %s (%s)",
+		AppVersion,
+		GitCommit,
+		BuildDate,
+		GoVersion,
+		GoArch,
+	)
+}

x/evm/genesis_test.go

@@ -47,7 +47,7 @@ func (suite *EvmTestSuite) TestInitGenesis() {
 				acc := suite.app.AccountKeeper.NewAccountWithAddress(suite.ctx, address.Bytes())
 				suite.Require().NotNil(acc)
 
-				err := suite.app.BankKeeper.SetBalance(suite.ctx, address.Bytes(), ethermint.NewInjectiveCoinInt64(1))
+				err := suite.app.BankKeeper.SetBalance(suite.ctx, address.Bytes(), ethermint.NewPhotonCoinInt64(1))
 				suite.Require().NoError(err)
 				suite.app.AccountKeeper.SetAccount(suite.ctx, acc)
 			},

x/evm/keeper/invariants_test.go

@@ -25,7 +25,7 @@ func (suite *KeeperTestSuite) TestBalanceInvariant() {
 			func() {
 				acc := suite.app.AccountKeeper.NewAccountWithAddress(suite.ctx, address.Bytes())
 				suite.Require().NotNil(acc)
-				suite.app.BankKeeper.SetBalance(suite.ctx, acc.GetAddress(), ethermint.NewInjectiveCoinInt64(1))
+				suite.app.BankKeeper.SetBalance(suite.ctx, acc.GetAddress(), ethermint.NewPhotonCoinInt64(1))
 				suite.Require().NoError(err)
 				suite.app.AccountKeeper.SetAccount(suite.ctx, acc)
 
@@ -38,7 +38,7 @@ func (suite *KeeperTestSuite) TestBalanceInvariant() {
 			func() {
 				acc := suite.app.AccountKeeper.NewAccountWithAddress(suite.ctx, address.Bytes())
 				suite.Require().NotNil(acc)
-				suite.app.BankKeeper.SetBalance(suite.ctx, acc.GetAddress(), ethermint.NewInjectiveCoinInt64(1))
+				suite.app.BankKeeper.SetBalance(suite.ctx, acc.GetAddress(), ethermint.NewPhotonCoinInt64(1))
 				suite.Require().NoError(err)
 				suite.app.AccountKeeper.SetAccount(suite.ctx, acc)
 

x/evm/keeper/keeper_test.go

@@ -44,7 +44,7 @@ func (suite *KeeperTestSuite) SetupTest() {
 	suite.ctx = suite.app.BaseApp.NewContext(checkTx, tmproto.Header{Height: 1, ChainID: "3", Time: time.Now().UTC()})
 	suite.address = ethcmn.HexToAddress(addrHex)
 
-	balance := ethermint.NewInjectiveCoin(sdk.ZeroInt())
+	balance := ethermint.NewPhotonCoin(sdk.ZeroInt())
 	acc := &ethermint.EthAccount{
 		BaseAccount: authtypes.NewBaseAccount(sdk.AccAddress(suite.address.Bytes()), nil, 0, 0),
 		CodeHash:    ethcrypto.Keccak256(nil),

x/evm/types/journal_test.go

@@ -62,7 +62,7 @@ func (suite *JournalTestSuite) SetupTest() {
 	suite.address = ethcmn.BytesToAddress(privkey.PubKey().Address().Bytes())
 	suite.journal = newJournal()
 
-	balance := ethermint.NewInjectiveCoin(sdk.NewInt(100))
+	balance := ethermint.NewPhotonCoin(sdk.NewInt(100))
 	acc := &ethermint.EthAccount{
 		BaseAccount: authtypes.NewBaseAccount(sdk.AccAddress(suite.address.Bytes()), nil, 0, 0),
 		CodeHash:    ethcrypto.Keccak256(nil),

x/evm/types/state_transition_test.go

@@ -17,7 +17,7 @@ func (suite *StateDBTestSuite) TestTransitionDb() {
 	suite.stateDB.SetNonce(suite.address, 123)
 
 	addr := sdk.AccAddress(suite.address.Bytes())
-	balance := ethermint.NewInjectiveCoin(sdk.NewInt(5000))
+	balance := ethermint.NewPhotonCoin(sdk.NewInt(5000))
 	acc := suite.app.AccountKeeper.GetAccount(suite.ctx, addr)
 	suite.app.AccountKeeper.SetAccount(suite.ctx, acc)
 	suite.app.BankKeeper.SetBalance(suite.ctx, addr, balance)

x/evm/types/statedb_test.go

@@ -48,7 +48,7 @@ func (suite *StateDBTestSuite) SetupTest() {
 
 	suite.address = ethcmn.BytesToAddress(privkey.PubKey().Address().Bytes())
 
-	balance := ethermint.NewInjectiveCoin(sdk.ZeroInt())
+	balance := ethermint.NewPhotonCoin(sdk.ZeroInt())
 	acc := &ethermint.EthAccount{
 		BaseAccount: authtypes.NewBaseAccount(sdk.AccAddress(suite.address.Bytes()), nil, 0, 0),
 		CodeHash:    ethcrypto.Keccak256(nil),