all: linter (#532)

* add additional linters

* fixes

* rm action

.github/workflows/test.yml

@@ -25,7 +25,7 @@ jobs:
         run: go version
       - name: Install tparse
         run: |
-          export GO111MODULE="on" && go get github.com/mfridman/tparse@v0.8.3
+          export GO111MODULE="on" && go get github.com/mfridman/tparse@latest
       - uses: actions/cache@v2.1.6
         with:
           path: ~/go/bin

.golangci.yml

@@ -36,6 +36,14 @@ linters:
     - varcheck
     - nolintlint
     - asciicheck
+    # - exhaustive
+    - exportloopref
+    - gofumpt
+    - gomodguard
+    # - nestif
+    # - nlreturn
+    - noctx
+    - rowserrcheck
     # - whitespace
     # - wsl
 
@@ -63,3 +71,14 @@ linters-settings:
     allow-leading-space: true
     require-explanation: false
     require-specific: false
+  gofumpt:
+    lang-version: "1.17"
+  gomodguard:
+    blocked:
+      versions: # List of blocked module version constraints
+      - https://github.com/etcd-io/etcd:                            # Blocked module with version constraint
+          version: ">= 3.4.10 || ~3.3.23"                           # Version constraint, see https://github.com/Masterminds/semver#basic-comparisons
+          reason: "CVE-2020-15114; CVE-2020-15136; CVE-2020-15115"  # Reason why the version constraint exists. (Optional)
+      - https://github.com/dgrijalva/jwt-go:                      # Blocked module with version constraint
+          version: ">= 4.0.0-preview1"                           # Version constraint, see https://github.com/Masterminds/semver#basic-comparisons
+          reason: "CVE-2020-26160"  # Reason why the version constraint exists. (Optional)

Makefile

@@ -406,14 +406,16 @@ benchmark:
 lint:
 	golangci-lint run --out-format=tab
 
+format:
+	find . -name '*.go' -type f -not -path "./vendor*" -not -path "*.git*" -not -path "./client/docs/statik/statik.go" -not -name '*.pb.go' -not -name '*.pb.gw.go' | xargs gofumpt -d -e -extra
+
 lint-fix:
 	golangci-lint run --fix --out-format=tab --issues-exit-code=0
 .PHONY: lint lint-fix
 
-format:
+format-fix:
-	find . -name '*.go' -type f -not -path "./vendor*" -not -path "*.git*" -not -path "./client/docs/statik/statik.go" -not -name '*.pb.go' | xargs gofmt -w -s
+	find . -name '*.go' -type f -not -path "./vendor*" -not -path "*.git*" -not -path "./client/docs/statik/statik.go" -not -name '*.pb.go' -not -name '*.pb.gw.go' | xargs gofumpt -w -s
-	find . -name '*.go' -type f -not -path "./vendor*" -not -path "*.git*" -not -path "./client/docs/statik/statik.go" -not -name '*.pb.go' | xargs misspell -w
+	find . -name '*.go' -type f -not -path "./vendor*" -not -path "*.git*" -not -path "./client/docs/statik/statik.go" -not -name '*.pb.go' -not -name '*.pb.gw.go' | xargs misspell -w
-	find . -name '*.go' -type f -not -path "./vendor*" -not -path "*.git*" -not -path "./client/docs/statik/statik.go" -not -name '*.pb.go' | xargs goimports -w -local github.com/tharsis/ethermint
 .PHONY: format
 
 ###############################################################################

app/ante/ante_test.go

@@ -128,7 +128,6 @@ func (suite AnteTestSuite) TestAnteHandler() {
 
 	for _, tc := range testCases {
 		suite.Run(tc.name, func() {
-
 			suite.ctx = suite.ctx.WithIsCheckTx(tc.reCheckTx).WithIsReCheckTx(tc.reCheckTx)
 
 			// expConsumed := params.TxGasContractCreation + params.TxGas
@@ -142,8 +141,6 @@ func (suite AnteTestSuite) TestAnteHandler() {
 			} else {
 				suite.Require().Error(err)
 			}
-
 		})
 	}
-
 }

app/ante/eth.go

@@ -1,6 +1,7 @@
 package ante
 
 import (
+	"errors"
 	"math/big"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
@@ -293,7 +294,6 @@ func (egcd EthGasConsumeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simula
 			homestead,
 			istanbul,
 		)
-
 		if err != nil {
 			return ctx, stacktrace.Propagate(err, "failed to deduct transaction costs from user balance")
 		}
@@ -403,7 +403,6 @@ func NewAccessListDecorator(evmKeeper EVMKeeper) AccessListDecorator {
 //
 // The AnteHandler will only prepare the access list if Yolov3/Berlin/EIPs 2929 and 2930 are applicable at the current number.
 func (ald AccessListDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error) {
-
 	params := ald.evmKeeper.GetParams(ctx)
 	ethCfg := params.ChainConfig.EthereumConfig(ald.evmKeeper.ChainID())
 
@@ -457,7 +456,6 @@ func NewEthIncrementSenderSequenceDecorator(ak evmtypes.AccountKeeper) EthIncrem
 // contract creation, the nonce will be incremented during the transaction execution and not within
 // this AnteHandler decorator.
 func (issd EthIncrementSenderSequenceDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (sdk.Context, error) {
-
 	for i, msg := range tx.GetMsgs() {
 		msgEthTx, ok := msg.(*evmtypes.MsgEthereumTx)
 		if !ok {
@@ -523,7 +521,7 @@ func (vbd EthValidateBasicDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simu
 
 	err := tx.ValidateBasic()
 	// ErrNoSignatures is fine with eth tx
-	if err != nil && err != sdkerrors.ErrNoSignatures {
+	if err != nil && !errors.Is(err, sdkerrors.ErrNoSignatures) {
 		return ctx, stacktrace.Propagate(err, "tx basic validation failed")
 	}
 

app/ante/eth_test.go

@@ -52,7 +52,6 @@ func (suite AnteTestSuite) TestEthSigVerificationDecorator() {
 			} else {
 				suite.Require().Error(err)
 			}
-
 		})
 	}
 }
@@ -120,7 +119,6 @@ func (suite AnteTestSuite) TestNewEthAccountVerificationDecorator() {
 				suite.app.AccountKeeper.SetAccount(suite.ctx, acc)
 
 				suite.app.EvmKeeper.AddBalance(addr, big.NewInt(1000000))
-
 			},
 			true,
 			true,
@@ -137,7 +135,6 @@ func (suite AnteTestSuite) TestNewEthAccountVerificationDecorator() {
 			} else {
 				suite.Require().Error(err)
 			}
-
 		})
 	}
 }
@@ -185,7 +182,6 @@ func (suite AnteTestSuite) TestEthNonceVerificationDecorator() {
 
 	for _, tc := range testCases {
 		suite.Run(tc.name, func() {
-
 			tc.malleate()
 			_, err := dec.AnteHandle(suite.ctx.WithIsReCheckTx(tc.reCheckTx), tc.tx, false, nextFn)
 
@@ -194,7 +190,6 @@ func (suite AnteTestSuite) TestEthNonceVerificationDecorator() {
 			} else {
 				suite.Require().Error(err)
 			}
-
 		})
 	}
 }
@@ -285,7 +280,6 @@ func (suite AnteTestSuite) TestEthGasConsumeDecorator() {
 
 	for _, tc := range testCases {
 		suite.Run(tc.name, func() {
-
 			tc.malleate()
 
 			if tc.expPanic {
@@ -301,7 +295,6 @@ func (suite AnteTestSuite) TestEthGasConsumeDecorator() {
 			} else {
 				suite.Require().Error(err)
 			}
-
 		})
 	}
 }
@@ -351,7 +344,6 @@ func (suite AnteTestSuite) TestCanTransferDecorator() {
 
 	for _, tc := range testCases {
 		suite.Run(tc.name, func() {
-
 			tc.malleate()
 
 			_, err := dec.AnteHandle(suite.ctx.WithIsCheckTx(true), tc.tx, false, nextFn)
@@ -412,7 +404,6 @@ func (suite AnteTestSuite) TestAccessListDecorator() {
 
 	for _, tc := range testCases {
 		suite.Run(tc.name, func() {
-
 			tc.malleate()
 			_, err := dec.AnteHandle(suite.ctx.WithIsCheckTx(true), tc.tx, false, nextFn)
 
@@ -486,7 +477,6 @@ func (suite AnteTestSuite) TestEthIncrementSenderSequenceDecorator() {
 
 	for _, tc := range testCases {
 		suite.Run(tc.name, func() {
-
 			tc.malleate()
 
 			if tc.expPanic {
@@ -544,7 +534,6 @@ func (suite AnteTestSuite) TestEthSetupContextDecorator() {
 			} else {
 				suite.Require().Error(err)
 			}
-
 		})
 	}
 }

app/app.go

@@ -116,10 +116,6 @@ func init() {
 	DefaultNodeHome = filepath.Join(userHomeDir, ".ethermintd")
 }
 
-func init() {
-
-}
-
 const appName = "ethermintd"
 
 var (
@@ -245,7 +241,6 @@ func NewEthermintApp(
 	appOpts servertypes.AppOptions,
 	baseAppOptions ...func(*baseapp.BaseApp),
 ) *EthermintApp {
-
 	appCodec := encodingConfig.Marshaler
 	cdc := encodingConfig.Amino
 	interfaceRegistry := encodingConfig.InterfaceRegistry
@@ -483,7 +478,7 @@ func NewEthermintApp(
 
 	// 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
+	// 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),

app/export.go

@@ -27,7 +27,6 @@ func NewDefaultGenesisState() simapp.GenesisState {
 func (app *EthermintApp) ExportAppStateAndValidators(
 	forZeroHeight bool, jailAllowedAddrs []string,
 ) (servertypes.ExportedApp, error) {
-
 	// Creates context with current height and checks txs for ctx to be usable by start of next block
 	ctx := app.NewContext(true, tmproto.Header{Height: app.LastBlockHeight()})
 

client/debug/debug.go

@@ -75,7 +75,6 @@ func AddrCmd() *cobra.Command {
 $ %s debug addr 0xA588C66983a81e800Db4dF74564F09f91c026351`, version.AppName, version.AppName),
 		Args: cobra.ExactArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
-
 			addrString := args[0]
 			cfg := sdk.GetConfig()
 

client/keys/add.go

@@ -289,7 +289,7 @@ func RunAddCmd(ctx client.Context, cmd *cobra.Command, args []string, inBuf *buf
 	return printCreate(cmd, info, showMnemonic, mnemonic, outputFormat)
 }
 
-func printCreate(cmd *cobra.Command, info keyring.Info, showMnemonic bool, mnemonic string, outputFormat string) error {
+func printCreate(cmd *cobra.Command, info keyring.Info, showMnemonic bool, mnemonic, outputFormat string) error {
 	switch outputFormat {
 	case OutputFormatText:
 		cmd.PrintErrln()

client/testnet.go

@@ -54,7 +54,7 @@ var (
 	flagIPAddrs        = "ip-addresses"
 )
 
-const nodeDirPerm = 0755
+const nodeDirPerm = 0o755
 
 // TestnetCmd initializes all files for tendermint testnet and application
 func TestnetCmd(
@@ -128,7 +128,6 @@ func InitTestnet(
 	ipAddresses []string,
 	numValidators int,
 ) error {
-
 	if chainID == "" {
 		chainID = fmt.Sprintf("ethermint_%d-1", tmrand.Int63n(9999999999999)+1)
 	}
@@ -258,7 +257,6 @@ func InitTestnet(
 			stakingtypes.NewCommissionRates(sdk.OneDec(), sdk.OneDec(), sdk.OneDec()),
 			sdk.OneInt(),
 		)
-
 		if err != nil {
 			return err
 		}
@@ -319,7 +317,6 @@ func initGenFiles(
 	genFiles []string,
 	numValidators int,
 ) error {
-
 	appGenState := mbm.DefaultGenesis(clientCtx.Codec)
 
 	// set the accounts in the genesis state
@@ -396,7 +393,6 @@ func collectGenFiles(
 	nodeIDs []string, valPubKeys []cryptotypes.PubKey, numValidators int,
 	outputDir, nodeDirPrefix, nodeDaemonHome string, genBalIterator banktypes.GenesisBalancesIterator,
 ) error {
-
 	var appState json.RawMessage
 	genTime := tmtime.Now()
 
@@ -461,16 +457,16 @@ func calculateIP(ip string, i int) (string, error) {
 	return ipv4.String(), nil
 }
 
-func writeFile(name string, dir string, contents []byte) error {
+func writeFile(name, dir string, contents []byte) error {
 	writePath := filepath.Join(dir)
 	file := filepath.Join(writePath, name)
 
-	err := tmos.EnsureDir(writePath, 0755)
+	err := tmos.EnsureDir(writePath, 0o755)
 	if err != nil {
 		return err
 	}
 
-	err = tmos.WriteFile(file, contents, 0644)
+	err = tmos.WriteFile(file, contents, 0o644)
 	if err != nil {
 		return err
 	}

cmd/ethermintd/flags.go

@@ -16,13 +16,11 @@ func init() {
 	infoCmd.Flags().Bool(flagLong, false, "Print full information")
 }
 
-var (
+var infoCmd = &cobra.Command{
-	infoCmd = &cobra.Command{
+	Use:   "info",
-		Use:   "info",
+	Short: "Print version info",
-		Short: "Print version info",
+	RunE: func(_ *cobra.Command, _ []string) error {
-		RunE: func(_ *cobra.Command, _ []string) error {
+		fmt.Println(version.Version())
-			fmt.Println(version.Version())
+		return nil
-			return nil
+	},
-		},
+}
-	}
-)

cmd/ethermintd/root.go

@@ -183,7 +183,6 @@ type appCreator struct {
 
 // newApp is an appCreator
 func (a appCreator) newApp(logger tmlog.Logger, db dbm.DB, traceStore io.Writer, appOpts servertypes.AppOptions) servertypes.Application {
-
 	var cache sdk.MultiStorePersistentCache
 
 	if cast.ToBool(appOpts.Get(sdkserver.FlagInterBlockCache)) {
@@ -238,7 +237,6 @@ func (a appCreator) appExport(
 	logger tmlog.Logger, db dbm.DB, traceStore io.Writer, height int64, forZeroHeight bool, jailAllowedAddrs []string,
 	appOpts servertypes.AppOptions,
 ) (servertypes.ExportedApp, error) {
-
 	var ethermintApp *app.EthermintApp
 	homePath, ok := appOpts.Get(flags.FlagHome).(string)
 	if !ok || homePath == "" {

codecov.yml

@@ -59,7 +59,8 @@ ignore:
   - "*.md"
   - "cmd"
   - "**/*.pb.go"
+  - "**/*.pb.gw.go"
   - "types/*.pb.go"
+  - "x/**/*.pb.gw.go"
   - "tests/*"
-  - "x/**/*.pb.go"
   - "scripts/"

crypto/ethsecp256k1/ethsecp256k1.go

@@ -194,7 +194,7 @@ func (pubKey *PubKey) UnmarshalAminoJSON(bz []byte) error {
 // prior to verification.
 //
 // CONTRACT: The signature should be in [R || S] format.
-func (pubKey PubKey) VerifySignature(msg []byte, sig []byte) bool {
+func (pubKey PubKey) VerifySignature(msg, sig []byte) bool {
 	if len(sig) == crypto.SignatureLength {
 		// remove recovery ID (V) if contained in the signature
 		sig = sig[:len(sig)-1]

crypto/hd/algorithm.go

@@ -38,7 +38,6 @@ func EthSecp256k1Option() keyring.Option {
 		options.SupportedAlgos = SupportedAlgorithms
 		options.SupportedAlgosLedger = SupportedAlgorithmsLedger
 	}
-
 }
 
 var (
@@ -48,8 +47,7 @@ var (
 	EthSecp256k1 = ethSecp256k1Algo{}
 )
 
-type ethSecp256k1Algo struct {
+type ethSecp256k1Algo struct{}
-}
 
 // Name returns eth_secp256k1
 func (s ethSecp256k1Algo) Name() hd.PubKeyType {
@@ -58,7 +56,7 @@ func (s ethSecp256k1Algo) Name() hd.PubKeyType {
 
 // Derive derives and returns the eth_secp256k1 private key for the given mnemonic and HD path.
 func (s ethSecp256k1Algo) Derive() hd.DeriveFn {
-	return func(mnemonic string, bip39Passphrase, path string) ([]byte, error) {
+	return func(mnemonic, bip39Passphrase, path string) ([]byte, error) {
 		hdpath, err := accounts.ParseDerivationPath(path)
 		if err != nil {
 			return nil, err
@@ -97,7 +95,7 @@ func (s ethSecp256k1Algo) Derive() hd.DeriveFn {
 // Generate generates a eth_secp256k1 private key from the given bytes.
 func (s ethSecp256k1Algo) Generate() hd.GenerateFn {
 	return func(bz []byte) cryptotypes.PrivKey {
-		var bzArr = make([]byte, ethsecp256k1.PrivKeySize)
+		bzArr := make([]byte, ethsecp256k1.PrivKeySize)
 		copy(bzArr, bz)
 
 		return &ethsecp256k1.PrivKey{Key: bzArr}

ethereum/rpc/backend/backend.go

@@ -182,7 +182,6 @@ func (e *EVMBackend) EthBlockFromTendermint(
 	block *tmtypes.Block,
 	fullTx bool,
 ) (map[string]interface{}, error) {
-
 	gasUsed := uint64(0)
 
 	ethRPCTxs := []interface{}{}
@@ -388,7 +387,7 @@ func (e *EVMBackend) GetLogs(blockHash common.Hash) ([][]*ethtypes.Log, error) {
 		return nil, err
 	}
 
-	var blockLogs = [][]*ethtypes.Log{}
+	blockLogs := [][]*ethtypes.Log{}
 	for _, txLog := range res.TxLogs {
 		blockLogs = append(blockLogs, txLog.EthLogs())
 	}

ethereum/rpc/backend/utils.go

@@ -18,7 +18,6 @@ import (
 // setTxDefaults populates tx message with default values in case they are not
 // provided on the args
 func (e *EVMBackend) setTxDefaults(args types.SendTxArgs) (types.SendTxArgs, error) {
-
 	if args.GasPrice == nil {
 		// TODO: Suggest a gas price based on the previous included txs
 		args.GasPrice = (*hexutil.Big)(new(big.Int).SetUint64(e.RPCGasCap()))

ethereum/rpc/namespaces/debug/api.go

@@ -63,14 +63,14 @@ func NewAPI(
 // and returns them as a JSON object.
 func (a *API) TraceTransaction(hash common.Hash, config *evmtypes.TraceConfig) (interface{}, error) {
 	a.logger.Debug("debug_traceTransaction", "hash", hash)
-	//Get transaction by hash
+	// Get transaction by hash
 	transaction, err := a.backend.GetTxByEthHash(hash)
 	if err != nil {
 		a.logger.Debug("tx not found", "hash", hash)
 		return nil, err
 	}
 
-	//check if block number is 0
+	// check if block number is 0
 	if transaction.Height == 0 {
 		return nil, errors.New("genesis is not traceable")
 	}
@@ -97,13 +97,12 @@ func (a *API) TraceTransaction(hash common.Hash, config *evmtypes.TraceConfig) (
 	}
 
 	traceResult, err := a.queryClient.TraceTx(rpctypes.ContextWithHeight(transaction.Height), &traceTxRequest)
-
 	if err != nil {
 		return nil, err
 	}
 
-	//Response format is unknown due to custom tracer config param
+	// Response format is unknown due to custom tracer config param
-	//More information can be found here https://geth.ethereum.org/docs/dapp/tracing-filtered
+	// More information can be found here https://geth.ethereum.org/docs/dapp/tracing-filtered
 	var decodedResult interface{}
 	err = json.Unmarshal(traceResult.Data, &decodedResult)
 	if err != nil {

ethereum/rpc/namespaces/debug/trace.go

@@ -14,7 +14,8 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
-//+build go1.5
+//go:build go1.5
+// +build go1.5
 
 package debug
 

ethereum/rpc/namespaces/debug/trace_fallback.go

@@ -14,7 +14,8 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
-//+build !go1.5
+//go:build !go1.5
+// +build !go1.5
 
 // no-op implementation of tracing methods for Go < 1.5.
 

ethereum/rpc/namespaces/eth/api.go

@@ -69,7 +69,6 @@ func NewPublicAPI(
 			clientCtx.Input,
 			hd.EthSecp256k1Option(),
 		)
-
 		if err != nil {
 			panic(err)
 		}
@@ -195,7 +194,7 @@ func (e *PublicAPI) BlockNumber() (hexutil.Uint64, error) {
 }
 
 // GetBalance returns the provided account's balance up to the provided block number.
-func (e *PublicAPI) GetBalance(address common.Address, blockNrOrHash rpctypes.BlockNumberOrHash) (*hexutil.Big, error) { // nolint: interfacer
+func (e *PublicAPI) GetBalance(address common.Address, blockNrOrHash rpctypes.BlockNumberOrHash) (*hexutil.Big, error) {
 	e.logger.Debug("eth_getBalance", "address", address.String(), "block number or hash", blockNrOrHash)
 
 	blockNum, err := e.getBlockNumber(blockNrOrHash)
@@ -221,7 +220,7 @@ func (e *PublicAPI) GetBalance(address common.Address, blockNrOrHash rpctypes.Bl
 }
 
 // GetStorageAt returns the contract storage at the given address, block number, and key.
-func (e *PublicAPI) GetStorageAt(address common.Address, key string, blockNrOrHash rpctypes.BlockNumberOrHash) (hexutil.Bytes, error) { // nolint: interfacer
+func (e *PublicAPI) GetStorageAt(address common.Address, key string, blockNrOrHash rpctypes.BlockNumberOrHash) (hexutil.Bytes, error) {
 	e.logger.Debug("eth_getStorageAt", "address", address.Hex(), "key", key, "block number or hash", blockNrOrHash)
 
 	blockNum, err := e.getBlockNumber(blockNrOrHash)
@@ -301,7 +300,7 @@ func (e *PublicAPI) GetUncleCountByBlockNumber(blockNum rpctypes.BlockNumber) he
 }
 
 // GetCode returns the contract code at the given address and block number.
-func (e *PublicAPI) GetCode(address common.Address, blockNrOrHash rpctypes.BlockNumberOrHash) (hexutil.Bytes, error) { // nolint: interfacer
+func (e *PublicAPI) GetCode(address common.Address, blockNrOrHash rpctypes.BlockNumberOrHash) (hexutil.Bytes, error) {
 	e.logger.Debug("eth_getCode", "address", address.Hex(), "block number or hash", blockNrOrHash)
 
 	blockNum, err := e.getBlockNumber(blockNrOrHash)
@@ -733,7 +732,7 @@ func (e *PublicAPI) GetUncleByBlockHashAndIndex(hash common.Hash, idx hexutil.Ui
 }
 
 // GetUncleByBlockNumberAndIndex returns the uncle identified by number and index. Always returns nil.
-func (e *PublicAPI) GetUncleByBlockNumberAndIndex(number hexutil.Uint, idx hexutil.Uint) map[string]interface{} {
+func (e *PublicAPI) GetUncleByBlockNumberAndIndex(number, idx hexutil.Uint) map[string]interface{} {
 	return nil
 }
 

ethereum/rpc/namespaces/personal/api.go

@@ -110,7 +110,7 @@ func (api *PrivateAccountAPI) ListAccounts() ([]common.Address, error) {
 
 // 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 { // nolint: interfacer
+func (api *PrivateAccountAPI) LockAccount(address common.Address) bool {
 	api.logger.Debug("personal_lockAccount", "address", address.String())
 	api.logger.Info("personal_lockAccount not supported")
 	// TODO: Not supported. See underlying issue  https://github.com/99designs/keyring/issues/85
@@ -141,7 +141,7 @@ func (api *PrivateAccountAPI) NewAccount(password string) (common.Address, error
 // 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.
-func (api *PrivateAccountAPI) UnlockAccount(_ context.Context, addr common.Address, _ string, _ *uint64) (bool, error) { // nolint: interfacer
+func (api *PrivateAccountAPI) UnlockAccount(_ context.Context, addr common.Address, _ string, _ *uint64) (bool, error) {
 	api.logger.Debug("personal_unlockAccount", "address", addr.String())
 	// TODO: Not supported. See underlying issue  https://github.com/99designs/keyring/issues/85
 	return false, nil

ethereum/rpc/types/block.go

@@ -3,6 +3,7 @@ package types
 import (
 	"context"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"math"
 	"math/big"
@@ -73,7 +74,7 @@ func (bn *BlockNumber) UnmarshalJSON(data []byte) error {
 	}
 
 	blckNum, err := hexutil.DecodeUint64(input)
-	if err == hexutil.ErrMissingPrefix {
+	if errors.Is(err, hexutil.ErrMissingPrefix) {
 		blckNum = cast.ToUint64(input)
 	} else if err != nil {
 		return err

ethereum/rpc/types/block_test.go

@@ -2,9 +2,10 @@ package types
 
 import (
 	"fmt"
+	"testing"
+
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/stretchr/testify/require"
-	"testing"
 )
 
 func TestUnmarshalBlockNumberOrHash(t *testing.T) {
@@ -98,5 +99,4 @@ func TestUnmarshalBlockNumberOrHash(t *testing.T) {
 			require.Error(t, err)
 		}
 	}
-
 }

ethereum/rpc/types/query_client.go

@@ -22,7 +22,7 @@ type QueryClient struct {
 }
 
 // NewQueryClient creates a new gRPC query client
-func NewQueryClient(clientCtx client.Context) *QueryClient { // nolint: interfacer
+func NewQueryClient(clientCtx client.Context) *QueryClient {
 	return &QueryClient{
 		ServiceClient: tx.NewServiceClient(clientCtx),
 		QueryClient:   evmtypes.NewQueryClient(clientCtx),

ethereum/rpc/types/utils.go

@@ -35,7 +35,7 @@ func RawTxToEthTx(clientCtx client.Context, txBz tmtypes.Tx) (*evmtypes.MsgEther
 
 // NewTransaction returns a transaction that will serialize to the RPC
 // representation, with the given location metadata set (if available).
-func NewTransaction(tx *ethtypes.Transaction, blockHash common.Hash, blockNumber uint64, index uint64) *RPCTransaction {
+func NewTransaction(tx *ethtypes.Transaction, blockHash common.Hash, blockNumber, index uint64) *RPCTransaction {
 	// Determine the signer. For replay-protected transactions, use the most permissive
 	// signer, because we assume that signers are backwards-compatible with old
 	// transactions. For non-protected transactions, the homestead signer signer is used
@@ -242,7 +242,6 @@ func NewTransactionFromData(
 	txHash, blockHash common.Hash,
 	blockNumber, index uint64,
 ) (*RPCTransaction, error) {
-
 	if txHash == (common.Hash{}) {
 		txHash = ethtypes.EmptyRootHash
 	}

ethereum/rpc/websockets.go

@@ -2,6 +2,7 @@ package rpc
 
 import (
 	"bytes"
+	"context"
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
@@ -67,7 +68,7 @@ type websocketsServer struct {
 }
 
 func NewWebsocketsServer(logger log.Logger, tmWSClient *rpcclient.WSClient, rpcAddr, wsAddr string) WebsocketsServer {
-	logger = logger.With("module", "websocket-server")
+	logger = logger.With("api", "websocket-server")
 	return &websocketsServer{
 		rpcAddr: rpcAddr,
 		wsAddr:  wsAddr,
@@ -93,7 +94,7 @@ func (s *websocketsServer) Start() {
 }
 
 func (s *websocketsServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	var upgrader = websocket.Upgrader{
+	upgrader := websocket.Upgrader{
 		CheckOrigin: func(r *http.Request) bool {
 			return true
 		},
@@ -235,7 +236,7 @@ func (s *websocketsServer) readLoop(wsConn *wsConn) {
 // 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))
+	req, err := http.NewRequestWithContext(context.Background(), "POST", "http://"+s.rpcAddr, bytes.NewBuffer(mb))
 	if err != nil {
 		return errors.Wrap(err, "Could not build request")
 	}
@@ -329,8 +330,8 @@ func (api *pubSubAPI) unsubscribe(id rpc.ID) bool {
 }
 
 func (api *pubSubAPI) subscribeNewHeads(wsConn *wsConn) (rpc.ID, error) {
-	var query = "subscribeNewHeads"
+	query := "subscribeNewHeads"
-	var subID = rpc.NewID()
+	subID := rpc.NewID()
 
 	sub, _, err := api.events.SubscribeNewHeads()
 	if err != nil {
@@ -542,8 +543,8 @@ func (api *pubSubAPI) subscribeLogs(wsConn *wsConn, extra interface{}) (rpc.ID,
 		return rpc.ID(""), err
 	}
 
-	var query = "subscribeLogs" + string(critBz)
+	query := "subscribeLogs" + string(critBz)
-	var subID = rpc.NewID()
+	subID := rpc.NewID()
 
 	sub, _, err := api.events.SubscribeLogs(crit)
 	if err != nil {
@@ -637,8 +638,8 @@ func (api *pubSubAPI) subscribeLogs(wsConn *wsConn, extra interface{}) (rpc.ID,
 }
 
 func (api *pubSubAPI) subscribePendingTransactions(wsConn *wsConn) (rpc.ID, error) {
-	var query = "subscribePendingTransactions"
+	query := "subscribePendingTransactions"
-	var subID = rpc.NewID()
+	subID := rpc.NewID()
 
 	sub, _, err := api.events.SubscribePendingTxs()
 	if err != nil {

server/config/config.go

@@ -29,9 +29,7 @@ const (
 	DefaultGasCap uint64 = 25000000
 )
 
-var (
+var evmTracers = []string{DefaultEVMTracer, "markdown", "struct", "access_list"}
-	evmTracers = []string{DefaultEVMTracer, "markdown", "struct", "access_list"}
-)
 
 // GetDefaultAPINamespaces returns the default list of JSON-RPC namespaces that should be enabled
 func GetDefaultAPINamespaces() []string {

server/json_rpc.go

@@ -18,7 +18,7 @@ import (
 )
 
 // StartJSONRPC starts the JSON-RPC server
-func StartJSONRPC(ctx *server.Context, clientCtx client.Context, tmRPCAddr string, tmEndpoint string, config config.Config) (*http.Server, chan struct{}, error) {
+func StartJSONRPC(ctx *server.Context, clientCtx client.Context, tmRPCAddr, tmEndpoint string, config config.Config) (*http.Server, chan struct{}, error) {
 	tmWsClient := ConnectTmWS(tmRPCAddr, tmEndpoint, ctx.Logger)
 
 	rpcServer := ethrpc.NewServer()

server/start.go

@@ -444,6 +444,6 @@ func openTraceWriter(traceWriterFile string) (w io.Writer, err error) {
 	return os.OpenFile(
 		traceWriterFile,
 		os.O_WRONLY|os.O_APPEND|os.O_CREATE,
-		0666,
+		0o666,
 	)
 }

tests/importer/importer_test.go

@@ -104,7 +104,7 @@ package importer
 // 	}()
 // }
 
-// // nolint: interfacer
+//
 // func createAndTestGenesis(t *testing.T, cms sdk.CommitMultiStore, ak authkeeper.AccountKeeper, bk bankkeeper.Keeper, evmKeeper *evmkeeper.Keeper) {
 // 	genBlock := ethcore.DefaultGenesisBlock()
 // 	ms := cms.CacheMultiStore()

tests/rpc/rpc_test.go

@@ -581,7 +581,6 @@ func TestEth_GetTransactionReceipt_ContractDeployment(t *testing.T) {
 
 	require.NotEqual(t, common.Address{}.String(), receipt["contractAddress"].(string))
 	require.NotNil(t, receipt["logs"])
-
 }
 
 func getTransactionReceipt(t *testing.T, hash hexutil.Bytes) map[string]interface{} {

tests/rpc/utils.go

@@ -2,6 +2,7 @@ package rpc
 
 import (
 	"bytes"
+	"context"
 	"encoding/hex"
 	"encoding/json"
 	"fmt"
@@ -35,9 +36,7 @@ type Response struct {
 	Result json.RawMessage `json:"result,omitempty"`
 }
 
-var (
+var HOST = os.Getenv("HOST")
-	HOST = os.Getenv("HOST")
-)
 
 func GetAddress() ([]byte, error) {
 	rpcRes, err := CallWithError("eth_accounts", []string{})
@@ -69,12 +68,11 @@ func Call(t *testing.T, method string, params interface{}) *Response {
 
 	var rpcRes *Response
 	time.Sleep(1 * time.Second)
-	/* #nosec */
 
 	if HOST == "" {
 		HOST = "http://localhost:8545"
 	}
-	res, err := http.Post(HOST, "application/json", bytes.NewBuffer(req)) // nolint:gosec
+	res, err := http.NewRequestWithContext(context.Background(), "POST", HOST, bytes.NewBuffer(req))
 	require.NoError(t, err)
 
 	decoder := json.NewDecoder(res.Body)
@@ -97,12 +95,11 @@ func CallWithError(method string, params interface{}) (*Response, error) {
 
 	var rpcRes *Response
 	time.Sleep(1 * time.Second)
-	/* #nosec */
 
 	if HOST == "" {
 		HOST = "http://localhost:8545"
 	}
-	res, err := http.Post(HOST, "application/json", bytes.NewBuffer(req)) // nolint:gosec
+	res, err := http.NewRequestWithContext(context.Background(), "POST", HOST, bytes.NewBuffer(req))
 	if err != nil {
 		return nil, err
 	}

testutil/network/network.go

@@ -273,7 +273,7 @@ func New(t *testing.T, cfg Config) *Network {
 		nodeDir := filepath.Join(network.BaseDir, nodeDirName, "ethermintd")
 		gentxsDir := filepath.Join(network.BaseDir, "gentxs")
 
-		require.NoError(t, os.MkdirAll(filepath.Join(nodeDir, "config"), 0755))
+		require.NoError(t, os.MkdirAll(filepath.Join(nodeDir, "config"), 0o755))
 
 		tmCfg.SetRoot(nodeDir)
 		tmCfg.Moniker = nodeDirName

testutil/network/network_test.go

@@ -1,3 +1,4 @@
+//go:build norace
 // +build norace
 
 package network_test

testutil/network/util.go

@@ -218,7 +218,6 @@ func collectGenFiles(cfg Config, vals []*Validator, outputDir string) error {
 }
 
 func initGenFiles(cfg Config, genAccounts []authtypes.GenesisAccount, genBalances []banktypes.Balance, genFiles []string) error {
-
 	// set the accounts in the genesis state
 	var authGenState authtypes.GenesisState
 	cfg.Codec.MustUnmarshalJSON(cfg.GenesisState[authtypes.ModuleName], &authGenState)
@@ -265,14 +264,14 @@ func initGenFiles(cfg Config, genAccounts []authtypes.GenesisAccount, genBalance
 	return nil
 }
 
-func writeFile(name string, dir string, contents []byte) error {
+func writeFile(name, dir string, contents []byte) error {
 	writePath := filepath.Join(dir)
 	file := filepath.Join(writePath, name)
 
-	err := tmos.EnsureDir(writePath, 0755)
+	err := tmos.EnsureDir(writePath, 0o755)
 	if err != nil {
 		return err
 	}
 
-	return tmos.WriteFile(file, contents, 0644)
+	return tmos.WriteFile(file, contents, 0o644)
 }

types/coin.go

@@ -21,10 +21,8 @@ const (
 	BaseDenomUnit = 18
 )
 
-var (
+// PowerReduction defines the default power reduction value for staking
-	// PowerReduction defines the default power reduction value for staking
+var PowerReduction = sdk.NewIntFromBigInt(new(big.Int).Exp(big.NewInt(10), big.NewInt(BaseDenomUnit), nil))
-	PowerReduction = sdk.NewIntFromBigInt(new(big.Int).Exp(big.NewInt(10), big.NewInt(BaseDenomUnit), nil))
-)
 
 // NewPhotonCoin is a utility function that returns an "aphoton" coin with the given sdk.Int amount.
 // The function will panic if the provided amount is negative.

x/evm/genesis.go

@@ -17,7 +17,7 @@ import (
 func InitGenesis(
 	ctx sdk.Context,
 	k *keeper.Keeper,
-	accountKeeper types.AccountKeeper, // nolint: interfacer
+	accountKeeper types.AccountKeeper,
 	data types.GenesisState,
 ) []abci.ValidatorUpdate {
 	k.WithContext(ctx)

x/evm/handler_test.go

@@ -58,7 +58,6 @@ func (suite *EvmTestSuite) SetupTest() {
 	suite.signer = tests.NewSigner(privKey)
 	suite.ethSigner = ethtypes.LatestSignerForChainID(suite.chainID)
 	suite.from = common.BytesToAddress(privKey.PubKey().Address().Bytes())
-
 }
 
 func TestEvmTestSuite(t *testing.T) {

x/evm/keeper/grpc_query.go

@@ -123,7 +123,6 @@ func (k Keeper) ValidatorAccount(c context.Context, req *types.QueryValidatorAcc
 	}
 
 	return &res, nil
-
 }
 
 // Balance implements the Query/Balance gRPC method
@@ -261,12 +260,11 @@ func (k Keeper) BlockLogs(c context.Context, req *types.QueryBlockLogsRequest) (
 
 		return false, nil
 	})
-
 	if err != nil {
 		return nil, status.Error(codes.Internal, err.Error())
 	}
 
-	var txsLogs = []types.TransactionLogs{}
+	txsLogs := []types.TransactionLogs{}
 	for _, txHash := range mapOrder {
 		if len(logs[txHash]) > 0 {
 			txsLogs = append(txsLogs, types.TransactionLogs{Hash: txHash, Logs: logs[txHash]})
@@ -481,7 +479,6 @@ func (k Keeper) TraceTx(c context.Context, req *types.QueryTraceTxRequest) (*typ
 	ethCfg := params.ChainConfig.EthereumConfig(k.eip155ChainID)
 	signer := ethtypes.MakeSigner(ethCfg, big.NewInt(ctx.BlockHeight()))
 	coreMessage, err := req.Msg.AsMessage(signer)
-
 	if err != nil {
 		return nil, status.Error(codes.Internal, err.Error())
 	}
@@ -489,8 +486,8 @@ func (k Keeper) TraceTx(c context.Context, req *types.QueryTraceTxRequest) (*typ
 	switch {
 	case req.TraceConfig != nil && req.TraceConfig.Tracer != "":
 		timeout := defaultTraceTimeout
-		//TODO change timeout to time.duration
+		// TODO change timeout to time.duration
-		//Used string to comply with go ethereum
+		// Used string to comply with go ethereum
 		if req.TraceConfig.Timeout != "" {
 			if timeout, err = time.ParseDuration(req.TraceConfig.Timeout); err != nil {
 				return nil, status.Errorf(codes.InvalidArgument, "timeout value: %s", err.Error())
@@ -530,7 +527,6 @@ func (k Keeper) TraceTx(c context.Context, req *types.QueryTraceTxRequest) (*typ
 	k.SetTxIndexTransient(uint64(req.TxIndex))
 
 	res, err := k.ApplyMessage(evm, coreMessage, ethCfg, true)
-
 	if err != nil {
 		return nil, status.Error(codes.Internal, err.Error())
 	}
@@ -538,7 +534,7 @@ func (k Keeper) TraceTx(c context.Context, req *types.QueryTraceTxRequest) (*typ
 	// Depending on the tracer type, format and return the trace result data.
 	switch tracer := tracer.(type) {
 	case *vm.StructLogger:
-		//TODO Return proper returnValue
+		// TODO Return proper returnValue
 		result := types.ExecutionResult{
 			Gas:         res.GasUsed,
 			Failed:      res.Failed(),

x/evm/keeper/grpc_query_test.go

@@ -20,7 +20,7 @@ import (
 	grpctypes "github.com/cosmos/cosmos-sdk/types/grpc"
 )
 
-//Not valid Ethereum address
+// Not valid Ethereum address
 const invalidAddress = "0x0000"
 
 func (suite *KeeperTestSuite) TestQueryAccount() {
@@ -101,7 +101,8 @@ func (suite *KeeperTestSuite) TestQueryCosmosAccount() {
 		malleate func()
 		expPass  bool
 	}{
-		{"invalid address",
+		{
+			"invalid address",
 			func() {
 				expAccount = &types.QueryCosmosAccountResponse{
 					CosmosAddress: sdk.AccAddress(common.Address{}.Bytes()).String(),
@@ -178,7 +179,8 @@ func (suite *KeeperTestSuite) TestQueryBalance() {
 		malleate func()
 		expPass  bool
 	}{
-		{"invalid address",
+		{
+			"invalid address",
 			func() {
 				expBalance = "0"
 				req = &types.QueryBalanceRequest{
@@ -236,7 +238,8 @@ func (suite *KeeperTestSuite) TestQueryStorage() {
 		malleate func()
 		expPass  bool
 	}{
-		{"invalid address",
+		{
+			"invalid address",
 			func() {
 				req = &types.QueryStorageRequest{
 					Address: invalidAddress,
@@ -291,7 +294,8 @@ func (suite *KeeperTestSuite) TestQueryCode() {
 		malleate func()
 		expPass  bool
 	}{
-		{"invalid address",
+		{
+			"invalid address",
 			func() {
 				req = &types.QueryCodeRequest{
 					Address: invalidAddress,
@@ -346,7 +350,8 @@ func (suite *KeeperTestSuite) TestQueryTxLogs() {
 		malleate func()
 		expPass  bool
 	}{
-		{"empty hash",
+		{
+			"empty hash",
 			func() {
 				req = &types.QueryTxLogsRequest{
 					Hash: common.Hash{}.String(),
@@ -354,7 +359,8 @@ func (suite *KeeperTestSuite) TestQueryTxLogs() {
 			},
 			false,
 		},
-		{"logs not found",
+		{
+			"logs not found",
 			func() {
 				hash := common.BytesToHash([]byte("hash"))
 				req = &types.QueryTxLogsRequest{
@@ -423,7 +429,8 @@ func (suite *KeeperTestSuite) TestQueryBlockLogs() {
 		malleate func()
 		expPass  bool
 	}{
-		{"empty hash",
+		{
+			"empty hash",
 			func() {
 				req = &types.QueryBlockLogsRequest{
 					Hash: common.Hash{}.String(),
@@ -431,7 +438,8 @@ func (suite *KeeperTestSuite) TestQueryBlockLogs() {
 			},
 			false,
 		},
-		{"logs not found",
+		{
+			"logs not found",
 			func() {
 				hash := common.BytesToHash([]byte("hash"))
 				req = &types.QueryBlockLogsRequest{
@@ -443,7 +451,6 @@ func (suite *KeeperTestSuite) TestQueryBlockLogs() {
 		{
 			"success",
 			func() {
-
 				hash := common.BytesToHash([]byte("block_hash"))
 				expLogs = []types.TransactionLogs{
 					{
@@ -533,7 +540,8 @@ func (suite *KeeperTestSuite) TestQueryBlockBloom() {
 		malleate func()
 		expPass  bool
 	}{
-		{"bad height",
+		{
+			"bad height",
 			func() {
 				req = &types.QueryBlockBloomRequest{Height: -2}
 			},
@@ -550,7 +558,8 @@ func (suite *KeeperTestSuite) TestQueryBlockBloom() {
 			},
 			true,
 		},
-		{"bloom not found for height",
+		{
+			"bloom not found for height",
 			func() {
 				req = &types.QueryBlockBloomRequest{Height: 100}
 				bloom := ethtypes.BytesToBloom([]byte("bloom"))
@@ -614,7 +623,8 @@ func (suite *KeeperTestSuite) TestQueryValidatorAccount() {
 		malleate func()
 		expPass  bool
 	}{
-		{"invalid address",
+		{
+			"invalid address",
 			func() {
 				expAccount = &types.QueryValidatorAccountResponse{
 					AccountAddress: sdk.AccAddress(common.Address{}.Bytes()).String(),
@@ -761,7 +771,7 @@ func (suite *KeeperTestSuite) TestEstimateGas() {
 
 func (suite *KeeperTestSuite) TestTraceTx() {
 	ctx := sdk.WrapSDKContext(suite.ctx)
-	//TODO deploy contract that triggers internal transactions
+	// TODO deploy contract that triggers internal transactions
 	var (
 		txMsg       *types.MsgEthereumTx
 		traceConfig *types.TraceConfig
@@ -795,10 +805,10 @@ func (suite *KeeperTestSuite) TestTraceTx() {
 	for _, tc := range testCases {
 		suite.Run(fmt.Sprintf("Case %s", tc.msg), func() {
 			suite.SetupTest()
-			//Deploy contract
+			// Deploy contract
 			contractAddr := suite.DeployTestContract(suite.T(), suite.address, sdk.NewIntWithDecimal(1000, 18).BigInt())
 			suite.Commit()
-			//Generate token transfer transaction
+			// Generate token transfer transaction
 			txMsg = suite.TransferERC20Token(suite.T(), contractAddr, suite.address, common.HexToAddress("0x378c50D9264C63F3F92B806d4ee56E9D86FfB3Ec"), sdk.NewIntWithDecimal(1, 18).BigInt())
 			suite.Commit()
 
@@ -818,5 +828,4 @@ func (suite *KeeperTestSuite) TestTraceTx() {
 			}
 		})
 	}
-
 }

x/evm/keeper/hooks.go

@@ -8,9 +8,7 @@ import (
 	"github.com/tharsis/ethermint/x/evm/types"
 )
 
-var (
+var _ types.EvmHooks = MultiEvmHooks{}
-	_ types.EvmHooks = MultiEvmHooks{}
-)
 
 // MultiEvmHooks combine multiple evm hooks, all hook functions are run in array sequence
 type MultiEvmHooks []types.EvmHooks

x/evm/keeper/keeper.go

@@ -66,7 +66,6 @@ func NewKeeper(
 	ak types.AccountKeeper, bankKeeper types.BankKeeper, sk types.StakingKeeper,
 	tracer string, debug bool,
 ) *Keeper {
-
 	// ensure evm module account is set
 	if addr := ak.GetModuleAddress(types.ModuleName); addr == nil {
 		panic("the EVM module account has not been set")
@@ -241,7 +240,7 @@ func (k Keeper) GetAllTxLogs(ctx sdk.Context) []types.TransactionLogs {
 	defer iter.Close()
 
 	mapOrder := []string{}
-	var mapLogs = make(map[string][]*types.Log)
+	mapLogs := make(map[string][]*types.Log)
 	for ; iter.Valid(); iter.Next() {
 		var txLog types.Log
 		k.cdc.MustUnmarshal(iter.Value(), &txLog)
@@ -272,7 +271,7 @@ func (k Keeper) GetTxLogs(txHash common.Hash) []*ethtypes.Log {
 
 	// We store the logs with key equal to txHash.Bytes() | sdk.Uint64ToBigEndian(uint64(log.Index)),
 	// therefore, we set the end boundary(excluded) to txHash.Bytes() | uint64.Max -> []byte
-	var end = txHash.Bytes()
+	end := txHash.Bytes()
 	end = append(end, []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}...)
 
 	iter := store.Iterator(txHash.Bytes(), end)
@@ -293,7 +292,7 @@ func (k Keeper) SetLogs(txHash common.Hash, logs []*ethtypes.Log) {
 	store := prefix.NewStore(k.Ctx().KVStore(k.storeKey), types.KeyPrefixLogs)
 
 	for _, log := range logs {
-		var key = txHash.Bytes()
+		key := txHash.Bytes()
 		key = append(key, sdk.Uint64ToBigEndian(uint64(log.Index))...)
 		txIndexLog := types.NewLogFromEth(log)
 		bz := k.cdc.MustMarshal(txIndexLog)
@@ -305,7 +304,7 @@ func (k Keeper) SetLogs(txHash common.Hash, logs []*ethtypes.Log) {
 func (k Keeper) SetLog(log *ethtypes.Log) {
 	store := prefix.NewStore(k.Ctx().KVStore(k.storeKey), types.KeyPrefixLogs)
 
-	var key = log.TxHash.Bytes()
+	key := log.TxHash.Bytes()
 	key = append(key, sdk.Uint64ToBigEndian(uint64(log.Index))...)
 
 	txIndexLog := types.NewLogFromEth(log)
@@ -319,7 +318,7 @@ func (k Keeper) DeleteTxLogs(ctx sdk.Context, txHash common.Hash) {
 
 	// We store the logs with key equal to txHash.Bytes() | sdk.Uint64ToBigEndian(uint64(log.Index)),
 	// therefore, we set the end boundary(excluded) to txHash.Bytes() | uint64.Max -> []byte
-	var end = txHash.Bytes()
+	end := txHash.Bytes()
 	end = append(end, []byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}...)
 
 	iter := store.Iterator(txHash.Bytes(), end)
@@ -361,7 +360,6 @@ func (k Keeper) GetAccountStorage(ctx sdk.Context, address common.Address) (type
 		storage = append(storage, types.NewState(key, value))
 		return false
 	})
-
 	if err != nil {
 		return types.Storage{}, err
 	}

x/evm/keeper/keeper_test.go

@@ -215,7 +215,7 @@ func (suite *KeeperTestSuite) DeployTestContract(t require.TestingT, owner commo
 	return crypto.CreateAddress(suite.address, nonce)
 }
 
-func (suite *KeeperTestSuite) TransferERC20Token(t require.TestingT, contractAddr common.Address, from common.Address, to common.Address, amount *big.Int) *types.MsgEthereumTx {
+func (suite *KeeperTestSuite) TransferERC20Token(t require.TestingT, contractAddr, from, to common.Address, amount *big.Int) *types.MsgEthereumTx {
 	ctx := sdk.WrapSDKContext(suite.ctx)
 	chainID := suite.app.EvmKeeper.ChainID()
 

x/evm/keeper/state_transition_test.go

@@ -51,7 +51,6 @@ func (suite *KeeperTestSuite) TestGetHashFn() {
 			"case 1.3: hash calculated from Tendermint header",
 			uint64(suite.ctx.BlockHeight()),
 			func() {
-
 				suite.ctx = suite.ctx.WithBlockHeader(header)
 				suite.app.EvmKeeper.WithContext(suite.ctx)
 			},

x/evm/keeper/statedb.go

@@ -484,7 +484,6 @@ func (k *Keeper) Suicide(addr common.Address) bool {
 
 // setSuicided sets a single byte to the transient store and marks the address as suicided
 func (k Keeper) setSuicided(ctx sdk.Context, addr common.Address) {
-
 	store := prefix.NewStore(ctx.TransientStore(k.transientKey), types.KeyPrefixTransientSuicided)
 	store.Set(addr.Bytes(), []byte{1})
 }
@@ -585,7 +584,7 @@ func (k *Keeper) AddressInAccessList(addr common.Address) bool {
 }
 
 // SlotInAccessList checks if the address and the slots are registered in the transient store
-func (k *Keeper) SlotInAccessList(addr common.Address, slot common.Hash) (addressOk bool, slotOk bool) {
+func (k *Keeper) SlotInAccessList(addr common.Address, slot common.Hash) (addressOk, slotOk bool) {
 	addressOk = k.AddressInAccessList(addr)
 	slotOk = k.addressSlotInAccessList(addr, slot)
 	return addressOk, slotOk

x/evm/keeper/statedb_test.go

@@ -178,7 +178,6 @@ func (suite *KeeperTestSuite) TestGetNonce() {
 
 			nonce := suite.app.EvmKeeper.GetNonce(tc.address)
 			suite.Require().Equal(tc.expectedNonce, nonce)
-
 		})
 	}
 }
@@ -248,7 +247,6 @@ func (suite *KeeperTestSuite) TestGetCodeHash() {
 
 	for _, tc := range testCases {
 		suite.Run(tc.name, func() {
-
 			tc.malleate()
 
 			hash := suite.app.EvmKeeper.GetCodeHash(tc.address)
@@ -296,7 +294,6 @@ func (suite *KeeperTestSuite) TestSetCode() {
 
 	for _, tc := range testCases {
 		suite.Run(tc.name, func() {
-
 			prev := suite.app.EvmKeeper.GetCode(tc.address)
 			suite.app.EvmKeeper.SetCode(tc.address, tc.code)
 			post := suite.app.EvmKeeper.GetCode(tc.address)
@@ -338,7 +335,6 @@ func (suite *KeeperTestSuite) TestRefund() {
 
 	for _, tc := range testCases {
 		suite.Run(tc.name, func() {
-
 			tc.malleate()
 
 			if tc.expPanic {
@@ -374,7 +370,6 @@ func (suite *KeeperTestSuite) TestState() {
 
 	for _, tc := range testCases {
 		suite.Run(tc.name, func() {
-
 			suite.app.EvmKeeper.SetState(suite.address, tc.key, tc.value)
 			value := suite.app.EvmKeeper.GetState(suite.address, tc.key)
 			suite.Require().Equal(tc.value, value)
@@ -385,9 +380,9 @@ func (suite *KeeperTestSuite) TestState() {
 func (suite *KeeperTestSuite) TestCommittedState() {
 	suite.SetupTest()
 
-	var key = common.BytesToHash([]byte("key"))
+	key := common.BytesToHash([]byte("key"))
-	var value1 = common.BytesToHash([]byte("value1"))
+	value1 := common.BytesToHash([]byte("value1"))
-	var value2 = common.BytesToHash([]byte("value2"))
+	value2 := common.BytesToHash([]byte("value2"))
 
 	suite.app.EvmKeeper.SetState(suite.address, key, value1)
 
@@ -474,10 +469,9 @@ func (suite *KeeperTestSuite) TestEmpty() {
 }
 
 func (suite *KeeperTestSuite) TestSnapshot() {
-
+	key := common.BytesToHash([]byte("key"))
-	var key = common.BytesToHash([]byte("key"))
+	value1 := common.BytesToHash([]byte("value1"))
-	var value1 = common.BytesToHash([]byte("value1"))
+	value2 := common.BytesToHash([]byte("value2"))
-	var value2 = common.BytesToHash([]byte("value2"))
 
 	testCases := []struct {
 		name     string

x/evm/keeper/utils_test.go

@@ -133,7 +133,6 @@ func (suite *KeeperTestSuite) TestCheckSenderBalance() {
 			} else {
 				suite.Require().Error(err, "invalid test %d passed", i)
 			}
-
 		})
 	}
 }
@@ -206,7 +205,6 @@ func (suite *KeeperTestSuite) TestDeductTxCostsFromUserBalance() {
 	}
 
 	for i, tc := range testCases {
-
 		suite.Run(tc.name, func() {
 			suite.SetupTest()
 			suite.app.EvmKeeper.AddBalance(suite.address, hundredInt.BigInt())
@@ -251,7 +249,6 @@ func (suite *KeeperTestSuite) TestDeductTxCostsFromUserBalance() {
 				suite.Require().Error(err, "invalid test %d passed", i)
 				suite.Require().Nil(fees, "invalid test %d passed. fees value must be nil", i)
 			}
-
 		})
 	}
 }

x/evm/types/codec.go

@@ -9,9 +9,7 @@ import (
 	proto "github.com/gogo/protobuf/proto"
 )
 
-var (
+var ModuleCdc = codec.NewProtoCodec(codectypes.NewInterfaceRegistry())
-	ModuleCdc = codec.NewProtoCodec(codectypes.NewInterfaceRegistry())
-)
 
 type (
 	ExtensionOptionsEthereumTxI interface{}

x/evm/types/codec_test.go

@@ -14,7 +14,6 @@ type caseAny struct {
 }
 
 func TestPackTxData(t *testing.T) {
-
 	testCases := []struct {
 		name    string
 		txData  TxData

x/evm/types/errors.go

@@ -32,9 +32,7 @@ const (
 	codeErrInvalidBaseFee
 )
 
-var (
+var ErrPostTxProcessing = errors.New("failed to execute post processing")
-	ErrPostTxProcessing = errors.New("failed to execute post processing")
-)
 
 var (
 	// ErrInvalidState returns an error resulting from an invalid Storage State.
@@ -92,7 +90,7 @@ var (
 // NewExecErrorWithReason unpacks the revert return bytes and returns a wrapped error
 // with the return reason.
 func NewExecErrorWithReason(revertReason []byte) *RevertError {
-	var result = common.CopyBytes(revertReason)
+	result := common.CopyBytes(revertReason)
 	reason, errUnpack := abi.UnpackRevert(result)
 	err := errors.New("execution reverted")
 	if errUnpack == nil {

x/evm/types/errors_test.go

@@ -1,16 +1,16 @@
 package types
 
 import (
+	"testing"
+
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/status-im/keycard-go/hexutils"
 	"github.com/stretchr/testify/require"
-	"testing"
 )
 
 var revertSelector = crypto.Keccak256([]byte("Error(string)"))[:4]
 
 func TestNewExecErrorWithReason(t *testing.T) {
-
 	testCases := []struct {
 		name         string
 		errorMessage string

x/evm/types/genesis_test.go

@@ -31,7 +31,6 @@ func TestGenesisTestSuite(t *testing.T) {
 }
 
 func (suite *GenesisTestSuite) TestValidateGenesisAccount() {
-
 	testCases := []struct {
 		name           string
 		genesisAccount GenesisAccount
@@ -84,7 +83,6 @@ func (suite *GenesisTestSuite) TestValidateGenesisAccount() {
 }
 
 func (suite *GenesisTestSuite) TestValidateGenesis() {
-
 	testCases := []struct {
 		name     string
 		genState *GenesisState

x/evm/types/logs.go

@@ -11,7 +11,7 @@ import (
 )
 
 // NewTransactionLogs creates a new NewTransactionLogs instance.
-func NewTransactionLogs(hash common.Hash, logs []*Log) TransactionLogs { // nolint: interfacer
+func NewTransactionLogs(hash common.Hash, logs []*Log) TransactionLogs {
 	return TransactionLogs{
 		Hash: hash.String(),
 		Logs: logs,
@@ -19,7 +19,7 @@ func NewTransactionLogs(hash common.Hash, logs []*Log) TransactionLogs { // noli
 }
 
 // NewTransactionLogsFromEth creates a new NewTransactionLogs instance using []*ethtypes.Log.
-func NewTransactionLogsFromEth(hash common.Hash, ethlogs []*ethtypes.Log) TransactionLogs { // nolint: interfacer
+func NewTransactionLogsFromEth(hash common.Hash, ethlogs []*ethtypes.Log) TransactionLogs {
 	return TransactionLogs{
 		Hash: hash.String(),
 		Logs: NewLogsFromEth(ethlogs),

x/evm/types/msg.go

@@ -37,7 +37,6 @@ func NewTx(
 	gasLimit uint64, gasPrice *big.Int, input []byte, accesses *ethtypes.AccessList,
 ) *MsgEthereumTx {
 	return newMsgEthereumTx(chainID, nonce, to, amount, gasLimit, gasPrice, input, accesses)
-
 }
 
 // NewTxContract returns a reference to a new Ethereum transaction

x/evm/types/storage.go

@@ -58,7 +58,7 @@ func (s State) Validate() error {
 }
 
 // NewState creates a new State instance
-func NewState(key, value common.Hash) State { // nolint: interfacer
+func NewState(key, value common.Hash) State {
 	return State{
 		Key:   key.String(),
 		Value: value.String(),

x/evm/types/utils.go

@@ -68,11 +68,10 @@ func UnwrapEthereumMsg(tx *sdk.Tx) (*MsgEthereumTx, error) {
 }
 
 // BinSearch execute the binary search and hone in on an executable gas limit
-func BinSearch(lo uint64, hi uint64, executable func(uint64) (bool, *MsgEthereumTxResponse, error)) (uint64, error) {
+func BinSearch(lo, hi uint64, executable func(uint64) (bool, *MsgEthereumTxResponse, error)) (uint64, error) {
 	for lo+1 < hi {
 		mid := (hi + lo) / 2
 		failed, _, err := executable(mid)
-
 		// If the error is not nil(consensus error), it means the provided message
 		// call or transaction will never be accepted no matter how much gas it is
 		// assigned. Return the error directly, don't struggle any more.

x/feemarket/genesis.go

@@ -14,7 +14,6 @@ func InitGenesis(
 	k keeper.Keeper,
 	data types.GenesisState,
 ) []abci.ValidatorUpdate {
-
 	k.SetParams(ctx, data.Params)
 	k.SetBaseFee(ctx, data.BaseFee.BigInt())
 	k.SetBlockGasUsed(ctx, data.BlockGas)

x/feemarket/keeper/keeper.go

@@ -25,7 +25,6 @@ type Keeper struct {
 func NewKeeper(
 	cdc codec.BinaryCodec, storeKey sdk.StoreKey, paramSpace paramtypes.Subspace,
 ) Keeper {
-
 	// set KeyTable if it has not already been set
 	if !paramSpace.HasKeyTable() {
 		paramSpace = paramSpace.WithKeyTable(types.ParamKeyTable())