chore: fix many staticcheck warnings

The most important ones were fixed in the two previous commit.

common/clickhousedb/utils.go

@@ -20,7 +20,7 @@ func (c *Component) ExecOnCluster(ctx context.Context, query string, args ...any
 }
 
 var (
-	spacesRegexp                   = regexp.MustCompile("\\s+")
+	spacesRegexp                   = regexp.MustCompile(`\s+`)
 	statementBeforeOnClusterRegexp = regexp.MustCompile(fmt.Sprintf("^((?i)%s)", strings.Join([]string{
 		`ALTER TABLE \S+`,
 		`ATTACH DICTIONARY \S+`,

common/helpers/validator.go

@@ -72,7 +72,7 @@ func isListen(fl validator.FieldLevel) bool {
 // (both fields should be a slice)
 func noIntersectField(fl validator.FieldLevel) bool {
 	field := fl.Field()
-	currentField, _, ok := fl.GetStructFieldOK()
+	currentField, _, _, ok := fl.GetStructFieldOK2()
 	if !ok {
 		return false
 	}

common/kafka/oauth.go

@@ -13,11 +13,6 @@ import (
 	"golang.org/x/oauth2/clientcredentials"
 )
 
-// tokenProvider implements OAuth token provider for franz-go.
-type tokenProvider struct {
-	tokenSource oauth2.TokenSource
-}
-
 // newOAuthTokenProvider returns a token provider function using OAuth credentials.
 func newOAuthTokenProvider(tlsConfig *tls.Config, oauthConfig clientcredentials.Config) func(context.Context) (oauth.Auth, error) {
 	return func(ctx context.Context) (oauth.Auth, error) {

common/reporter/metrics_test.go

@@ -164,8 +164,6 @@ func TestMetrics(t *testing.T) {
 type customMetrics struct {
 	metric1 *reporter.MetricDesc
 	metric2 *reporter.MetricDesc
-
-	count int
 }
 
 func (m customMetrics) Describe(ch chan<- *prometheus.Desc) {
@@ -174,7 +172,6 @@ func (m customMetrics) Describe(ch chan<- *prometheus.Desc) {
 }
 
 func (m customMetrics) Collect(ch chan<- prometheus.Metric) {
-	m.count++
 	ch <- prometheus.MustNewConstMetric(m.metric1, prometheus.GaugeValue, 18)
 	ch <- prometheus.MustNewConstMetric(m.metric2, prometheus.GaugeValue, 30)
 }

conntrackfixer/root.go

@@ -130,8 +130,8 @@ func (c *Component) Start() error {
 				return fmt.Errorf("error while watching for Docker events: %w", err)
 			case msg := <-msgs:
 				c.r.Info().
-					Str("id", msg.ID).
+					Str("id", msg.Actor.ID).
-					Str("from", msg.From).
+					Str("from", msg.Actor.Attributes["image"]).
 					Msg("new container started")
 				c.metrics.runs.WithLabelValues("new container").Inc()
 				trigger()

conntrackfixer/root_test.go

@@ -12,6 +12,7 @@ import (
 	"time"
 
 	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/api/types/events"
 	"github.com/docker/go-connections/nat"
 	_ "github.com/opencontainers/image-spec/specs-go/v1" // used by mock
@@ -59,12 +60,12 @@ func TestRoot(t *testing.T) {
 	// Initial trigger
 	dockerClientMock.EXPECT().
 		ContainerList(gomock.Any(), gomock.Any()).
-		Return([]types.Container{{ID: "initial"}}, nil)
+		Return([]container.Summary{{ID: "initial"}}, nil)
 	dockerClientMock.EXPECT().
 		ContainerInspect(gomock.Any(), "initial").
-		Return(types.ContainerJSON{
+		Return(container.InspectResponse{
-			NetworkSettings: &types.NetworkSettings{
+			NetworkSettings: &container.NetworkSettings{
-				NetworkSettingsBase: types.NetworkSettingsBase{
+				NetworkSettingsBase: container.NetworkSettingsBase{
 					Ports: map[nat.Port][]nat.PortBinding{
 						"2055/udp": {
 							nat.PortBinding{
@@ -134,12 +135,12 @@ func TestRoot(t *testing.T) {
 	t.Run("new container", func(_ *testing.T) {
 		dockerClientMock.EXPECT().
 			ContainerList(gomock.Any(), gomock.Any()).
-			Return([]types.Container{{ID: "new one"}}, nil)
+			Return([]container.Summary{{ID: "new one"}}, nil)
 		dockerClientMock.EXPECT().
 			ContainerInspect(gomock.Any(), "new one").
-			Return(types.ContainerJSON{
+			Return(container.InspectResponse{
-				NetworkSettings: &types.NetworkSettings{
+				NetworkSettings: &container.NetworkSettings{
-					NetworkSettingsBase: types.NetworkSettingsBase{
+					NetworkSettingsBase: container.NetworkSettingsBase{
 						Ports: map[nat.Port][]nat.PortBinding{
 							"2055/udp": {
 								nat.PortBinding{

demoexporter/bmp/client.go

@@ -155,5 +155,4 @@ func (c *Component) startBMPClient(ctx context.Context) {
 	case <-done:
 	case <-ctx.Done():
 	}
-	return
 }

demoexporter/bmp/client_test.go

@@ -62,6 +62,9 @@ func TestClient(t *testing.T) {
 
 	// Test we get a reconnect
 	conn, err := listener.Accept()
+	if err != nil {
+		t.Fatalf("Accept() error:\n%+v", err)
+	}
 	time.Sleep(20 * time.Millisecond)
 	conn.Close()
 	conn, err = listener.Accept()
@@ -96,6 +99,7 @@ func TestClient(t *testing.T) {
 	}
 
 	// Assume we got what we want.
+	_ = msgs
 
 	time.Sleep(20 * time.Millisecond)
 	gotMetrics := r.GetMetrics("akvorado_demoexporter_")

demoexporter/bmp/root.go

@@ -20,7 +20,6 @@ type Component struct {
 	t      tomb.Tomb
 	config Configuration
 
-	bmpPort int
 	metrics struct {
 		connections reporter.Counter
 		errors      *reporter.CounterVec

inlet/kafka/config.go

@@ -35,7 +35,7 @@ type CompressionCodec kgo.CompressionCodec
 
 // UnmarshalText produces a compression codec
 func (cc *CompressionCodec) UnmarshalText(text []byte) error {
-	codec := kgo.CompressionCodec{}
+	var codec kgo.CompressionCodec
 	switch string(text) {
 	case "none":
 		codec = kgo.NoCompression()

orchestrator/clickhouse/migrations.go

@@ -10,28 +10,9 @@ import (
 	"net"
 	"strings"
 
-	"github.com/ClickHouse/clickhouse-go/v2"
-
-	"akvorado/common/reporter"
 	"akvorado/common/schema"
 )
 
-type migrationStep struct {
-	// CheckQuery to execute to check if the step is needed.
-	CheckQuery string
-	// Arguments to use for the query
-	Args []any
-	// Function to execute if the query returns no row or returns `0'.
-	Do func() error
-}
-
-type migrationStepFunc func(context.Context, reporter.Logger, clickhouse.Conn) migrationStep
-
-type migrationStepWithDescription struct {
-	Description string
-	Step        migrationStepFunc
-}
-
 // migrateDatabase execute database migration
 func (c *Component) migrateDatabase() error {
 	ctx := c.t.Context(nil)

orchestrator/clickhouse/migrations_helpers.go

@@ -63,7 +63,7 @@ func quoteString(s string) string {
 func (c *Component) tableAlreadyExists(ctx context.Context, table, column, target string) (bool, error) {
 	// Normalize a bit the target. This is far from perfect, but we test that
 	// and we hope this does not differ between ClickHouse versions!
-	target = strings.TrimSpace(regexp.MustCompile("\\s+").ReplaceAllString(target, " "))
+	target = strings.TrimSpace(regexp.MustCompile(`\s+`).ReplaceAllString(target, " "))
 
 	// Fetch the existing one
 	row := c.d.ClickHouse.QueryRow(ctx,

outlet/core/classifier.go

@@ -23,8 +23,6 @@ var (
 	regexCache     = make(map[string]*regexp.Regexp)
 )
 
-type classifierContextKey string
-
 // ExporterClassifierRule defines a classification rule for a exporter.
 type ExporterClassifierRule struct {
 	program *vm.Program

outlet/core/config.go

@@ -30,8 +30,6 @@ type Configuration struct {
 	ASNProviders []ASNProvider `validate:"dive"`
 	// NetProviders defines the source used to get Prefix/Network Information
 	NetProviders []NetProvider `validate:"dive"`
-	// Old configuration settings
-	classifierCacheSize uint
 }
 
 // DefaultConfiguration represents the default configuration for the core component.
@@ -130,7 +128,7 @@ func ConfigurationUnmarshallerHook() mapstructure.DecodeHookFunc {
 		}
 		if oldKey != nil {
 			oldValue := helpers.ElemOrIdentity(from.MapIndex(*oldKey))
-			if oldValue.Kind() == reflect.Bool && oldValue.Bool() == true {
+			if oldValue.Kind() == reflect.Bool && oldValue.Bool() {
 				newASNProviders := []ASNProvider{}
 				for _, p := range DefaultConfiguration().ASNProviders {
 					if p != ASNProviderFlow && p != ASNProviderFlowExceptPrivate {
@@ -151,5 +149,5 @@ func init() {
 	helpers.RegisterMapstructureUnmarshallerHook(ASNProviderUnmarshallerHook())
 	helpers.RegisterMapstructureUnmarshallerHook(NetProviderUnmarshallerHook())
 	helpers.RegisterMapstructureUnmarshallerHook(helpers.SubnetMapUnmarshallerHook[uint]())
-	helpers.RegisterMapstructureDeprecatedFields[Configuration]("Workers")
+	helpers.RegisterMapstructureDeprecatedFields[Configuration]("Workers", "ClassifierCacheSize")
 }

outlet/core/enricher.go

@@ -352,7 +352,7 @@ func isPrivateAS(as uint32) bool {
 	if as == 0 || as == 23456 {
 		return true
 	}
-	if 64496 <= as && as <= 65551 || 4_200_000_000 <= as && as <= 4_294_967_295 {
+	if 64496 <= as && as <= 65551 || 4_200_000_000 <= as {
 		return true
 	}
 	return false

outlet/flow/decoder/netflow/root.go

@@ -147,7 +147,7 @@ type samplingRateSystem struct {
 func (s *samplingRateSystem) GetSamplingRate(version uint16, obsDomainID uint32, samplerID uint64) uint32 {
 	s.lock.RLock()
 	defer s.lock.RUnlock()
-	rate, _ := s.rates[samplingRateKey{
+	rate := s.rates[samplingRateKey{
 		version:     version,
 		obsDomainID: obsDomainID,
 		samplerID:   samplerID,

outlet/flow/decoder/netflow/root_test.go

@@ -4,7 +4,6 @@
 package netflow
 
 import (
-	"fmt"
 	"net/netip"
 	"path/filepath"
 	"testing"
@@ -603,7 +602,7 @@ func TestDecodeNFv5(t *testing.T) {
 		pb.RawFlow_TS_NETFLOW_PACKET,
 		pb.RawFlow_TS_NETFLOW_FIRST_SWITCHED,
 	} {
-		t.Run(fmt.Sprintf("%s", tsSource), func(t *testing.T) {
+		t.Run(tsSource.String(), func(t *testing.T) {
 			_, nfdecoder, bf, got, finalize := setup(t, false)
 			options := decoder.Option{TimestampSource: tsSource}
 

outlet/metadata/cache_test.go

@@ -12,7 +12,6 @@ import (
 	"net/netip"
 	"path/filepath"
 	"slices"
-	"sort"
 	"strconv"
 	"sync"
 	"sync/atomic"
@@ -49,11 +48,6 @@ func expectCacheLookup(t *testing.T, sc *metadataCache, exporterIP string, ifInd
 	}
 }
 
-func sortResults(t *testing.T, ifindexes []uint) {
-	t.Helper()
-	sort.Slice(ifindexes, func(i, j int) bool { return ifindexes[i] < ifindexes[j] })
-}
-
 func TestGetEmpty(t *testing.T) {
 	r, sc := setupTestCache(t)
 	expectCacheLookup(t, sc, "127.0.0.1", 676, provider.Answer{})

outlet/routing/provider/bioris/root.go

@@ -125,7 +125,7 @@ func (p *Provider) Dial(config RISInstance) (*RISInstanceRuntime, error) {
 		securityOption = grpc.WithTransportCredentials(credentials.NewTLS(config))
 	}
 	backoff := backoff.DefaultConfig
-	conn, err := grpc.Dial(config.GRPCAddr, securityOption,
+	conn, err := grpc.NewClient(config.GRPCAddr, securityOption,
 		grpc.WithUnaryInterceptor(p.clientMetrics.UnaryClientInterceptor()),
 		grpc.WithStreamInterceptor(p.clientMetrics.StreamClientInterceptor()),
 		grpc.WithConnectParams(grpc.ConnectParams{Backoff: backoff}),

outlet/routing/provider/bioris/root_test.go

@@ -392,7 +392,7 @@ func TestBioRIS(t *testing.T) {
 
 	// Check BioRIS server
 	{
-		risConn, err := grpc.Dial(rpcListener.Addr().String(),
+		risConn, err := grpc.NewClient(rpcListener.Addr().String(),
 			grpc.WithTransportCredentials(insecure.NewCredentials()))
 		if err != nil {
 			t.Fatalf("Dial() error:\n%+v", err)