Update golangci-lint to support go version 1.23

Some linters got inactivated leading to an error
when running the linter. Thus, they are now removed
from the config file's enable list.

.golangci.yml

@@ -4,13 +4,10 @@ run:
 linters:
   disable-all: true
   enable:
-  - deadcode
   - errcheck
   - gosimple
   - govet
   - ineffassign
   - staticcheck
-  - structcheck
   - typecheck
   - unused
-  - varcheck

Makefile

@@ -273,7 +273,7 @@ output-dir:
 
 .PHONY: golangci-lint
 golangci-lint:
-	$(call go-get-tool,$(GOLANGCI_LINT),github.com/golangci/golangci-lint/cmd/golangci-lint@v1.56.2)
+	$(call go-get-tool,$(GOLANGCI_LINT),github.com/golangci/golangci-lint/cmd/golangci-lint@v1.62.2)
 
 .PHONY: proto-compiler
 proto-compiler: protoc protoc-gen-go protoc-gen-go-grpc

api/v1/webhook_suite_test.go

@@ -134,7 +134,7 @@ var _ = BeforeSuite(func() {
 		if err != nil {
 			return err
 		}
-		conn.Close()
+		_ = conn.Close()
 		return nil
 	}).Should(Succeed())
 

cmd/frontend/internal/bird/bird.go

@@ -124,7 +124,9 @@ func (b *RoutingService) Run(ctx context.Context, monitorLogs bool) error {
 				return
 			}
 			// when context is done, close File thus signalling EOF to bufio Scan()
-			defer w.Close()
+			defer func() {
+				_ = w.Close()
+			}()
 			<-ctx.Done()
 			b.logger.Info("Context closed, terminate log monitoring")
 		}()

cmd/frontend/internal/bird/configure.go

@@ -51,7 +51,9 @@ func (r *routingConfig) Apply() error {
 	if err != nil {
 		return fmt.Errorf("create %v, err: %v", r.path, err)
 	}
-	defer file.Close()
+	defer func() {
+		_ = file.Close()
+	}()
 
 	_, err = file.WriteString(r.config)
 	if err != nil {

cmd/frontend/main.go

@@ -113,7 +113,9 @@ func main() {
 	if err != nil {
 		log.Fatal(logger, "Dial NSP", "error", err)
 	}
-	defer conn.Close()
+	defer func() {
+		_ = conn.Close()
+	}()
 
 	// monitor status of NSP connection and adjust probe status accordingly
 	if err := connection.Monitor(ctx, health.NSPCliSvc, conn); err != nil {
@@ -131,7 +133,9 @@ func main() {
 	if err != nil {
 		log.Fatal(logger, "Dial loadbalancer", "error", err)
 	}
-	defer lbConn.Close()
+	defer func() {
+		_ = lbConn.Close()
+	}()
 
 	// create and start frontend service
 	c := &feConfig.Config{

cmd/ipam/main.go

@@ -137,7 +137,9 @@ func main() {
 	if err != nil {
 		log.Fatal(logger, "Dial NSP err", "error", err)
 	}
-	defer conn.Close()
+	defer func() {
+		_ = conn.Close()
+	}()
 
 	// monitor status of NSP connection and adjust probe status accordingly
 	if err := connection.Monitor(ctx, health.NSPCliSvc, conn); err != nil {

cmd/operator/main.go

@@ -87,7 +87,9 @@ func setupTLSCert(socket string) error {
 	certDir := "/tmp/k8s-webhook-server/serving-certs"
 
 	go func() {
-		defer client.Close()
+		defer func() {
+			_ = client.Close()
+		}()
 		err := client.WatchX509Context(ctx, &x509Watcher{CertDir: certDir})
 		if err != nil && status.Code(err) != codes.Canceled {
 			log.Fatal(setupLog, "error watching X.509 context", "error", err)
@@ -132,7 +134,7 @@ func main() {
 			"Enabling this will ensure there is only one active controller manager.")
 
 	if os.Getenv(common.LogLevelEnv) == "" { // trace as default value
-		os.Setenv(common.LogLevelEnv, "trace")
+		_ = os.Setenv(common.LogLevelEnv, "trace")
 	}
 
 	ver := flag.Bool("version", false, "Print version and quit")

cmd/proxy/main.go

@@ -164,7 +164,9 @@ func main() {
 	if err != nil {
 		log.Fatal(logger, "Dialing IPAM", "error", err)
 	}
-	defer conn.Close()
+	defer func() {
+		_ = conn.Close()
+	}()
 
 	// monitor status of IPAM connection and adjust probe status accordingly
 	if err := connection.Monitor(signalCtx, health.IPAMCliSvc, conn); err != nil {
@@ -193,7 +195,9 @@ func main() {
 	if err != nil {
 		log.Fatal(logger, "Dialing NSP", "error", err)
 	}
-	defer nspConn.Close()
+	defer func() {
+		_ = nspConn.Close()
+	}()
 
 	// monitor status of NSP connection and adjust probe status accordingly
 	if err := connection.Monitor(signalCtx, health.NSPCliSvc, nspConn); err != nil {
@@ -234,14 +238,18 @@ func main() {
 		cancelSignalCtx()
 		return
 	}
-	defer cc.Close()
+	defer func() {
+		_ = cc.Close()
+	}()
 	monitorClient := networkservice.NewMonitorConnectionClient(cc)
 	go nsmmonitor.ConnectionMonitor(ctx, config.Name, monitorClient)
 
 	// create and start NSC that connects all remote NSE belonging to the right service
 	interfaceMonitorClient := interfacemonitor.NewClient(interfaceMonitor, p, netUtils)
 	nsmClient := service.GetNSC(ctx, &config, nsmAPIClient, p, interfaceMonitorClient, monitorClient)
-	defer nsmClient.Close()
+	defer func() {
+		_ = nsmClient.Close()
+	}()
 	go func() {
 		service.StartNSC(nsmClient, config.NetworkServiceName)
 		cancelSignalCtx() // let others with proper clean-up gracefully terminate

cmd/stateless-lb/main.go

@@ -178,7 +178,9 @@ func main() {
 	if err != nil {
 		log.Fatal(logger, "Dial NSP", "error", err)
 	}
-	defer conn.Close()
+	defer func() {
+		_ = conn.Close()
+	}()
 
 	// Monitor status of NSP connection and adjust probe status accordingly
 	if err := connection.Monitor(ctx, health.NSPCliSvc, conn); err != nil {
@@ -329,7 +331,9 @@ func main() {
 		cancel()
 		return
 	}
-	defer cc.Close()
+	defer func() {
+		_ = cc.Close()
+	}()
 	// Start monitoring NSM connections the LB is part of
 	monitorClient := networkservice.NewMonitorConnectionClient(cc)
 	go nsmmonitor.ConnectionMonitor(ctx, config.Name, monitorClient)

cmd/tapa/main.go

@@ -170,7 +170,9 @@ func main() {
 	if err != nil {
 		log.Fatal(logger, "dial to NSMgr", "error", err)
 	}
-	defer cc.Close()
+	defer func() {
+		_ = cc.Close()
+	}()
 	monitorClient := networkservice.NewMonitorConnectionClient(cc)
 
 	if err := os.RemoveAll(config.Socket); err != nil {

pkg/health/probe/probe.go

@@ -118,7 +118,9 @@ func (hp *HealthProbe) Request(ctx context.Context) error {
 	if err != nil {
 		return fmt.Errorf("failed to connect service %q, %w", hp.addr, err)
 	}
-	defer conn.Close()
+	defer func() {
+		_ = conn.Close()
+	}()
 
 	rpcCtx, rpcCancel := context.WithTimeout(ctx, hp.rpcTimeout)
 	defer rpcCancel()

pkg/ipam/storage/sqlite/sqlite_test.go

@@ -30,7 +30,9 @@ const dbFileName = "test.db"
 
 func Test_Add_Get(t *testing.T) {
 	_ = os.Remove(dbFileName)
-	defer os.Remove(dbFileName)
+	defer func() {
+		_ = os.Remove(dbFileName)
+	}()
 
 	store, err := sqlite.New(dbFileName)
 	assert.Nil(t, err)
@@ -74,7 +76,9 @@ func Test_Add_Get(t *testing.T) {
 
 func Test_GetChilds(t *testing.T) {
 	_ = os.Remove(dbFileName)
-	defer os.Remove(dbFileName)
+	defer func() {
+		_ = os.Remove(dbFileName)
+	}()
 
 	store, err := sqlite.New(dbFileName)
 	assert.Nil(t, err)
@@ -106,7 +110,9 @@ func Test_GetChilds(t *testing.T) {
 
 func Test_Delete(t *testing.T) {
 	_ = os.Remove(dbFileName)
-	defer os.Remove(dbFileName)
+	defer func() {
+		_ = os.Remove(dbFileName)
+	}()
 
 	store, err := sqlite.New(dbFileName)
 	assert.Nil(t, err)

pkg/nsm/client.go

@@ -172,7 +172,7 @@ func (apiClient *APIClient) Delete() {
 		apiClient.cancel()
 	}
 	if apiClient.GRPCClient != nil {
-		apiClient.GRPCClient.Close()
+		_ = apiClient.GRPCClient.Close()
 	}
 }
 

pkg/nsp/registry/sqlite/sqlite.go

@@ -60,7 +60,7 @@ func (trsql *TargetRegistrySQLite) Close() error {
 	if err != nil {
 		return fmt.Errorf("failed to close db connection: %w", err)
 	}
-	sqlDB.Close()
+	_ = sqlDB.Close()
 	return nil
 }
 

pkg/nsp/registry/sqlite/sqlite_test.go

@@ -31,12 +31,12 @@ func TestTargetRegistrySQLite_Set(t *testing.T) {
 	t.Cleanup(func() { goleak.VerifyNone(t) })
 
 	dbFile := "test.db"
-	os.Remove(dbFile)
+	_ = os.Remove(dbFile)
 	db, err := sqlite.New(dbFile)
 	assert.Nil(t, err)
 	defer func() {
-		db.Close()
-		os.Remove(dbFile)
+		_ = db.Close()
+		_ = os.Remove(dbFile)
 	}()
 
 	ctx := context.Background()