update lint

.github/workflows/checks.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: ^1.20
+          go-version: ^1.21
         id: go
 
       - name: Check out code into the Go module directory
@@ -40,20 +40,20 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: ^1.20
+          go-version: ^1.21
         id: go
 
       - name: Check out code into the Go module directory
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Install gofumpt
         run: go install mvdan.cc/gofumpt@v0.4.0
 
       - name: Install staticcheck
-        run: go install honnef.co/go/tools/cmd/staticcheck@v0.4.2
+        run: go install honnef.co/go/tools/cmd/staticcheck@v0.4.6
 
       - name: Install golangci-lint
-        run: go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.51.2
+        run: go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.55.0
 
       - name: Lint
         run: make lint

.golangci.yaml

@@ -30,6 +30,7 @@ linters:
     - deadcode
     - varcheck
     - interfacebloat
+    - exhaustruct
 
     #
     # Disabled because of generics:
@@ -121,4 +122,10 @@ issues:
   exclude-rules:
     - path: (.+)_test.go
       linters:
-        - exhaustruct
+        - exhaustruct
+    - path: database/.*.go
+      linters:
+        - goconst
+    - path: cmd/tool/.*.go
+      linters:
+        - goconst

beaconclient/beacon_client_test.go

@@ -77,7 +77,7 @@ func TestBeaconInstance(t *testing.T) {
 
 	vals, err := bc.GetStateValidators("1")
 	require.NoError(t, err)
-	require.Equal(t, 1, len(vals.Data))
+	require.Len(t, vals.Data, 1)
 	require.Contains(t, validatorResponseEntryToMap(vals.Data), "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a")
 }
 
@@ -188,7 +188,7 @@ func TestFetchValidators(t *testing.T) {
 
 		validators, err := backend.beaconClient.GetStateValidators("1")
 		require.NoError(t, err)
-		require.Equal(t, 1, len(validators.Data))
+		require.Len(t, validators.Data, 1)
 		require.Contains(t, validatorResponseEntryToMap(validators.Data), testPubKey)
 
 		// only beacon 2 should have a validator, and should be used by default
@@ -199,7 +199,7 @@ func TestFetchValidators(t *testing.T) {
 
 		validators, err = backend.beaconClient.GetStateValidators("1")
 		require.NoError(t, err)
-		require.Equal(t, 1, len(validators.Data))
+		require.Len(t, validators.Data, 1)
 	})
 }
 
@@ -239,5 +239,5 @@ func TestGetForkSchedule(t *testing.T) {
 
 	forkSchedule, err := bc.GetForkSchedule()
 	require.NoError(t, err)
-	require.Equal(t, 4, len(forkSchedule.Data))
+	require.Len(t, forkSchedule.Data, 4)
 }

common/types.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"os"
+	"strconv"
 	"strings"
 
 	builderApiV1 "github.com/attestantio/go-builder-client/api/v1"
@@ -194,8 +195,8 @@ type BuilderGetValidatorsResponseEntry struct {
 
 type BidTraceV2 struct {
 	builderApiV1.BidTrace
-	BlockNumber uint64 `db:"block_number"    json:"block_number,string"`
-	NumTx       uint64 `db:"num_tx"          json:"num_tx,string"`
+	BlockNumber uint64 `db:"block_number" json:"block_number,string"`
+	NumTx       uint64 `db:"num_tx"       json:"num_tx,string"`
 }
 
 type BidTraceV2JSON struct {
@@ -267,17 +268,17 @@ func (b *BidTraceV2JSON) CSVHeader() []string {
 
 func (b *BidTraceV2JSON) ToCSVRecord() []string {
 	return []string{
-		fmt.Sprint(b.Slot),
+		strconv.FormatUint(b.Slot, 10),
 		b.ParentHash,
 		b.BlockHash,
 		b.BuilderPubkey,
 		b.ProposerPubkey,
 		b.ProposerFeeRecipient,
-		fmt.Sprint(b.GasLimit),
-		fmt.Sprint(b.GasUsed),
+		strconv.FormatUint(b.GasLimit, 10),
+		strconv.FormatUint(b.GasUsed, 10),
 		b.Value,
-		fmt.Sprint(b.NumTx),
-		fmt.Sprint(b.BlockNumber),
+		strconv.FormatUint(b.NumTx, 10),
+		strconv.FormatUint(b.BlockNumber, 10),
 	}
 }
 
@@ -309,20 +310,20 @@ func (b *BidTraceV2WithTimestampJSON) CSVHeader() []string {
 
 func (b *BidTraceV2WithTimestampJSON) ToCSVRecord() []string {
 	return []string{
-		fmt.Sprint(b.Slot),
+		strconv.FormatUint(b.Slot, 10),
 		b.ParentHash,
 		b.BlockHash,
 		b.BuilderPubkey,
 		b.ProposerPubkey,
 		b.ProposerFeeRecipient,
-		fmt.Sprint(b.GasLimit),
-		fmt.Sprint(b.GasUsed),
+		strconv.FormatUint(b.GasLimit, 10),
+		strconv.FormatUint(b.GasUsed, 10),
 		b.Value,
-		fmt.Sprint(b.NumTx),
-		fmt.Sprint(b.BlockNumber),
-		fmt.Sprint(b.Timestamp),
-		fmt.Sprint(b.TimestampMs),
-		fmt.Sprint(b.OptimisticSubmission),
+		strconv.FormatUint(b.NumTx, 10),
+		strconv.FormatUint(b.BlockNumber, 10),
+		strconv.FormatInt(b.Timestamp, 10),
+		strconv.FormatInt(b.TimestampMs, 10),
+		strconv.FormatBool(b.OptimisticSubmission),
 	}
 }
 
@@ -599,7 +600,7 @@ func (s *SubmitBlockRequestV2Optimistic) MarshalSSZTo(buf []byte) (dst []byte, e
 		s.Message = new(builderApiV1.BidTrace)
 	}
 	if dst, err = s.Message.MarshalSSZTo(dst); err != nil {
-		return
+		return nil, err
 	}
 
 	// Offset (1) 'ExecutionPayloadHeader'
@@ -624,13 +625,13 @@ func (s *SubmitBlockRequestV2Optimistic) MarshalSSZTo(buf []byte) (dst []byte, e
 
 	// Field (1) 'ExecutionPayloadHeader'
 	if dst, err = s.ExecutionPayloadHeader.MarshalSSZTo(dst); err != nil {
-		return
+		return nil, err
 	}
 
 	// Field (3) 'Transactions'
 	if size := len(s.Transactions); size > 1073741824 {
 		err = ssz.ErrListTooBigFn("SubmitBlockRequestV2Optimistic.Transactions", size, 1073741824)
-		return
+		return nil, err
 	}
 	{
 		offset = 4 * len(s.Transactions)
@@ -642,19 +643,19 @@ func (s *SubmitBlockRequestV2Optimistic) MarshalSSZTo(buf []byte) (dst []byte, e
 	for ii := 0; ii < len(s.Transactions); ii++ {
 		if size := len(s.Transactions[ii]); size > 1073741824 {
 			err = ssz.ErrBytesLengthFn("SubmitBlockRequestV2Optimistic.Transactions[ii]", size, 1073741824)
-			return
+			return nil, err
 		}
 		dst = append(dst, s.Transactions[ii]...)
 	}
 
 	// Field (4) 'Withdrawals'
 	if size := len(s.Withdrawals); size > 16 {
 		err = ssz.ErrListTooBigFn("SubmitBlockRequestV2Optimistic.Withdrawals", size, 16)
-		return
+		return nil, err
 	}
 	for ii := 0; ii < len(s.Withdrawals); ii++ {
 		if dst, err = s.Withdrawals[ii].MarshalSSZTo(dst); err != nil {
-			return
+			return nil, err
 		}
 	}
 	return dst, nil

common/types_test.go

@@ -16,24 +16,24 @@ import (
 func makeTestSubmitBlockRequestV2Optimistic(t *testing.T) *SubmitBlockRequestV2Optimistic {
 	t.Helper()
 	testParentHash, err := utils.HexToHash("0xec51bd499a3fa0270f1446fbf05ff0b61157cfe4ec719bb4c3e834e339ee9c5c")
-	require.Nil(t, err)
+	require.NoError(t, err)
 	testBlockHash, err := utils.HexToHash("0x3f5b5aaa800a3d25c3f75e72dc45da89fdd58168f1358a9f94aac8b029361a0a")
-	require.Nil(t, err)
+	require.NoError(t, err)
 	testRandao, err := utils.HexToHash("0x8cf6b7fbfbaf80da001fe769fd02e9b8dbfa0a646d9cf51b5d7137dd4f8103cc")
-	require.Nil(t, err)
+	require.NoError(t, err)
 	testRoot, err := utils.HexToHash("0x7554727cee6d976a1dfdad80b392b37c87f0651ff5b01f6a0b3402bcfce92077")
-	require.Nil(t, err)
+	require.NoError(t, err)
 	testBuilderPubkey, err := utils.HexToPubkey("0xae7bde4839fa905b7d8125fd84cfdcd0c32cd74e1be3fa24263d71b520fc78113326ce0a90b95d73f19e6d8150a2f73b")
-	require.Nil(t, err)
+	require.NoError(t, err)
 	testProposerPubkey, err := utils.HexToPubkey("0xbb8e223239fa905b7d8125fd84cfdcd0c32cd74e1be3fa24263d71b520fc78113326ce0a90b95d73f19e6d8150a2f73b")
-	require.Nil(t, err)
+	require.NoError(t, err)
 	testAddress, err := utils.HexToAddress("0x95222290DD7278Aa3Ddd389Cc1E1d165CC4BAfe5")
-	require.Nil(t, err)
+	require.NoError(t, err)
 	testSignature, err := utils.HexToSignature("0xb06311be19c92307c06070578af9ad147c9c6ea902439eac19f785f3dca478c354b79a0af9b09839c3d06c1ccf2185b0162f4d4fbf981220f77586b52ed9ae8a8acfc953baaa30dee15e1b112913c6cbe02c780d7b5363a4af16563fe55c2e88")
-	require.Nil(t, err)
+	require.NoError(t, err)
 	testValue := new(uint256.Int)
 	err = testValue.SetFromDecimal("100")
-	require.Nil(t, err)
+	require.NoError(t, err)
 
 	return &SubmitBlockRequestV2Optimistic{
 		Message: &builderApiV1.BidTrace{
@@ -108,13 +108,13 @@ func TestSubmitBlockRequestV2Optimistic(t *testing.T) {
 
 	// Encode the object.
 	sszObj, err := obj.MarshalSSZ()
-	require.Nil(t, err)
-	require.Equal(t, obj.SizeSSZ(), len(sszObj))
+	require.NoError(t, err)
+	require.Len(t, sszObj, obj.SizeSSZ())
 
 	// Unmarshal the full object.
 	unmarshal := new(SubmitBlockRequestV2Optimistic)
 	err = unmarshal.UnmarshalSSZ(sszObj)
-	require.Nil(t, err)
+	require.NoError(t, err)
 
 	compareV2RequestEquality(t, obj, unmarshal)
 
@@ -125,10 +125,10 @@ func TestSubmitBlockRequestV2Optimistic(t *testing.T) {
 	// Unmarshal just the header.
 	unmarshalHeader := new(SubmitBlockRequestV2Optimistic)
 	err = unmarshalHeader.UnmarshalSSZHeaderOnly(sszObj)
-	require.Nil(t, err)
+	require.NoError(t, err)
 
 	compareV2RequestEquality(t, obj, unmarshalHeader)
 
 	// Make sure size is correct (must have 32 bytes of ExtraData).
-	require.Equal(t, unmarshalHeader.SizeSSZ(), 944)
+	require.Equal(t, 944, unmarshalHeader.SizeSSZ())
 }

common/utils_test.go

@@ -91,7 +91,7 @@ func TestGetEnvStrSlice(t *testing.T) {
 	testEnvVar := "TESTENV_TestGetEnvStrSlice"
 	os.Unsetenv(testEnvVar)
 	r := GetEnvStrSlice(testEnvVar, nil)
-	require.Len(t, r, 0)
+	require.Empty(t, r)
 
 	t.Setenv(testEnvVar, "")
 	r = GetEnvStrSlice(testEnvVar, nil)
@@ -185,7 +185,7 @@ func TestGetBlockSubmissionInfo(t *testing.T) {
 			submission, err := GetBlockSubmissionInfo(tc.payload)
 			require.Equal(t, tc.expected, submission)
 			if tc.err == "" {
-				require.Nil(t, err)
+				require.NoError(t, err)
 			} else {
 				require.Equal(t, tc.err, err.Error())
 			}

database/database_test.go

@@ -4,6 +4,7 @@ import (
 	"database/sql"
 	"fmt"
 	"os"
+	"strconv"
 	"testing"
 	"time"
 
@@ -205,7 +206,7 @@ func TestMigrations(t *testing.T) {
 	rowCount := 0
 	err := db.DB.QueryRow(query).Scan(&rowCount)
 	require.NoError(t, err)
-	require.Equal(t, len(migrations.Migrations.Migrations), rowCount)
+	require.Len(t, migrations.Migrations.Migrations, rowCount)
 }
 
 func TestSetBlockBuilderStatus(t *testing.T) {
@@ -448,7 +449,7 @@ func TestGetBuilderSubmissions(t *testing.T) {
 	require.Equal(t, optimisticSubmission, e.OptimisticSubmission)
 	require.Equal(t, pubkey, e.BuilderPubkey)
 	require.Equal(t, feeRecipient.String(), e.ProposerFeeRecipient)
-	require.Equal(t, fmt.Sprint(collateral), e.Value)
+	require.Equal(t, strconv.Itoa(collateral), e.Value)
 }
 
 func TestUpsertTooLateGetPayload(t *testing.T) {
@@ -462,7 +463,7 @@ func TestUpsertTooLateGetPayload(t *testing.T) {
 
 	entries, err := db.GetTooLateGetPayload(slot)
 	require.NoError(t, err)
-	require.Equal(t, 1, len(entries))
+	require.Len(t, entries, 1)
 	entry := entries[0]
 	require.Equal(t, pk, entry.ProposerPubkey)
 	require.Equal(t, hash, entry.BlockHash)
@@ -484,7 +485,7 @@ func TestUpsertTooLateGetPayload(t *testing.T) {
 
 	entries, err = db.GetTooLateGetPayload(slot)
 	require.NoError(t, err)
-	require.Equal(t, 2, len(entries))
+	require.Len(t, entries, 2)
 	entry = entries[1]
 	require.Equal(t, hash2, entry.BlockHash)
 }

database/types.go

@@ -2,7 +2,7 @@ package database
 
 import (
 	"database/sql"
-	"fmt"
+	"strconv"
 	"time"
 
 	builderApiV1 "github.com/attestantio/go-builder-client/api/v1"
@@ -114,9 +114,9 @@ var ExecutionPayloadEntryCSVHeader = []string{"id", "inserted_at", "slot", "prop
 
 func (e *ExecutionPayloadEntry) ToCSVRecord() []string {
 	return []string{
-		fmt.Sprint(e.ID),
+		strconv.FormatInt(e.ID, 10),
 		e.InsertedAt.UTC().String(),
-		fmt.Sprint(e.Slot),
+		strconv.FormatUint(e.Slot, 10),
 		e.ProposerPubkey,
 		e.BlockHash,
 		e.Version,

database/typesconv_test.go

@@ -44,5 +44,5 @@ func TestExecutionPayloadEntryToExecutionPayloadDeneb(t *testing.T) {
 	payload, err := ExecutionPayloadEntryToExecutionPayload(entry)
 	require.NoError(t, err)
 	require.Equal(t, "0xbd1ae4f7edb2315d2df70a8d9881fab8d6763fb1c00533ae729050928c38d05a", payload.Deneb.ExecutionPayload.BlockHash.String())
-	require.Equal(t, 1, len(payload.Deneb.BlobsBundle.Blobs))
+	require.Len(t, payload.Deneb.BlobsBundle.Blobs, 1)
 }

datastore/datastore.go

@@ -3,7 +3,7 @@ package datastore
 
 import (
 	"database/sql"
-	"fmt"
+	"strconv"
 	"strings"
 	"sync"
 	"time"
@@ -122,7 +122,7 @@ func (ds *Datastore) RefreshKnownValidators(log *logrus.Entry, beaconClient beac
 	})
 	log.Infof("received known validators from beacon-node")
 
-	err = ds.redis.SetStats(RedisStatsFieldValidatorsTotal, fmt.Sprint(numValidators))
+	err = ds.redis.SetStats(RedisStatsFieldValidatorsTotal, strconv.Itoa(numValidators))
 	if err != nil {
 		log.WithError(err).Error("failed to set stats for RedisStatsFieldValidatorsTotal")
 	}

datastore/datastore_test.go

@@ -27,7 +27,7 @@ func setupTestDatastore(t *testing.T, mockDB *database.MockDB) *Datastore {
 func TestGetPayloadFailure(t *testing.T) {
 	ds := setupTestDatastore(t, &database.MockDB{})
 	_, err := ds.GetGetPayloadResponse(common.TestLog, 1, "a", "b")
-	require.Error(t, ErrExecutionPayloadNotFound, err)
+	require.ErrorIs(t, ErrExecutionPayloadNotFound, err)
 }
 
 func TestGetPayloadDatabaseFallback(t *testing.T) {