Fix lint issues

Author: motoki317

internal/ingress/controller/nginx.go

@@ -23,7 +23,6 @@ import (
 	"errors"
 	"fmt"
 	"io/fs"
-	"k8s.io/ingress-nginx/internal/ingress/metric/collectors"
 	"net"
 	"net/http"
 	"os"
@@ -38,6 +37,8 @@ import (
 	"time"
 	"unicode"
 
+	"k8s.io/ingress-nginx/internal/ingress/metric/collectors"
+
 	proxyproto "github.com/armon/go-proxyproto"
 	"github.com/eapache/channels"
 	apiv1 "k8s.io/api/core/v1"
@@ -429,7 +430,7 @@ func (n *NGINXController) stopWait() {
 	}
 
 	// Wait at least for the configured duration, if any
-	delay := waitAtLeastUntil.Sub(time.Now())
+	delay := time.Until(waitAtLeastUntil)
 	if delay > 0 {
 		time.Sleep(delay)
 	}

pkg/util/process/sigterm.go

@@ -17,11 +17,12 @@ limitations under the License.
 package process
 
 import (
-	klog "k8s.io/klog/v2"
 	"os"
 	"os/signal"
 	"syscall"
 	"time"
+
+	"k8s.io/klog/v2"
 )
 
 type exiter func(code int)
@@ -41,7 +42,7 @@ func HandleSigterm(ngx Controller, delay int, exit exiter) {
 	}
 
 	if delay > 0 {
-		klog.Warning("[DEPRECATED] Delaying controller exit for %d seconds", delay)
+		klog.Warningf("[DEPRECATED] Delaying controller exit for %d seconds", delay)
 		klog.Warning("[DEPRECATED] 'post-shutdown-grace-period' does not have any effect for graceful shutdown - use 'shutdown-grace-period' flag instead.")
 		time.Sleep(time.Duration(delay) * time.Second)
 	}

test/e2e/gracefulshutdown/k8s_async_shutdown.go

@@ -19,14 +19,15 @@ package gracefulshutdown
 import (
 	"context"
 	"fmt"
+	"net/http"
+	"strings"
+	"time"
+
 	"github.com/onsi/ginkgo/v2"
 	"github.com/stretchr/testify/assert"
 	appsv1 "k8s.io/api/apps/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/ingress-nginx/test/e2e/framework"
-	"net/http"
-	"strings"
-	"time"
 )
 
 var _ = framework.IngressNginxDescribe("[Shutdown] Asynchronous shutdown", func() {