cleanup: enable revive(blank-imports rule) checking

Signed-off-by: jwcesign <[email protected]>

Author: jwcesign

.golangci.yml

@@ -80,6 +80,8 @@ linters-settings:
       - name: errorf
       - name: exported
       - name: var-declaration
+      - name: blank-imports
+      - name: indent-error-flow
   staticcheck:
     checks:
       - all

pkg/controllers/cronfederatedhpa/cronfederatedhpa_handler.go

@@ -17,7 +17,7 @@ import (
 	"fmt"
 	"sync"
 	"time"
-	_ "time/tzdata"
+	_ "time/tzdata" // import tzdata to support time zone parsing, this is needed by function time.LoadLocation
 
 	"github.com/go-co-op/gocron"
 	autoscalingv2 "k8s.io/api/autoscaling/v2"

pkg/karmadactl/cmdinit/kubernetes/deploy.go

@@ -229,9 +229,8 @@ func (i *CommandInitOption) Validate(parentCommand string) error {
 
 	if i.isExternalEtcdProvided() {
 		return i.validateExternalEtcd(parentCommand)
-	} else {
-		return i.validateLocalEtcd(parentCommand)
 	}
+	return i.validateLocalEtcd(parentCommand)
 }
 
 // Complete Initialize k8s client

pkg/karmadactl/top/top_pods.go

@@ -334,8 +334,7 @@ func checkPodAge(pod *corev1.Pod) error {
 	if age > metricsCreationDelay {
 		message := fmt.Sprintf("Metrics not available for pod %s/%s, age: %s", pod.Namespace, pod.Name, age.String())
 		return errors.New(message)
-	} else {
-		klog.V(2).Infof("Metrics not yet available for pod %s/%s, age: %s", pod.Namespace, pod.Name, age.String())
-		return nil
 	}
+	klog.V(2).Infof("Metrics not yet available for pod %s/%s, age: %s", pod.Namespace, pod.Name, age.String())
+	return nil
 }

pkg/webhook/cronfederatedhpa/validating.go

@@ -19,10 +19,9 @@ import (
 	"math"
 	"net/http"
 	"time"
-	_ "time/tzdata"
+	_ "time/tzdata" // import tzdata to support time zone parsing, this is needed by function time.LoadLocation
 
 	"github.com/adhocore/gronx"
-	apimachineryvalidation "k8s.io/apimachinery/pkg/api/validation"
 	apivalidation "k8s.io/apimachinery/pkg/api/validation"
 	"k8s.io/apimachinery/pkg/util/sets"
 	"k8s.io/apimachinery/pkg/util/validation/field"
@@ -54,7 +53,7 @@ func (v *ValidatingAdmission) Handle(_ context.Context, req admission.Request) a
 	klog.V(2).Infof("Validating CronFederatedHPA(%s) for request: %s", klog.KObj(cronFHPA).String(), req.Operation)
 
 	errs := field.ErrorList{}
-	errs = append(errs, apimachineryvalidation.ValidateObjectMeta(&cronFHPA.ObjectMeta, true, apivalidation.NameIsDNSSubdomain, field.NewPath("metadata"))...)
+	errs = append(errs, apivalidation.ValidateObjectMeta(&cronFHPA.ObjectMeta, true, apivalidation.NameIsDNSSubdomain, field.NewPath("metadata"))...)
 	errs = append(errs, validateCronFederatedHPASpec(&cronFHPA.Spec, field.NewPath("spec"))...)
 
 	if len(errs) != 0 {