Enable gocyclo static check

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

.golangci.yml

@@ -42,12 +42,16 @@ linters:
   - unused
   - varcheck
   # other linters supported by golangci-lint.
+  - gocyclo
   - gosec
   - whitespace
 
 linters-settings:
   goimports:
     local-prefixes: github.com/karmada-io/karmada
+  gocyclo:
+    # minimal cyclomatic complexity to report
+    min-complexity: 15
 
 issues:
   # The list of ids of default excludes to include or disable. By default it's empty.

pkg/karmadactl/join.go

@@ -151,6 +151,8 @@ func (j *CommandJoinOption) AddFlags(flags *pflag.FlagSet) {
 }
 
 // RunJoin is the implementation of the 'join' command.
+//nolint:gocyclo
+// Note: ignore the cyclomatic complexity issue to get gocyclo on board. Tracked by: https://github.com/karmada-io/karmada/issues/460
 func RunJoin(cmdOut io.Writer, karmadaConfig KarmadaConfig, opts CommandJoinOption) error {
 	klog.V(1).Infof("joining cluster. cluster name: %s", opts.ClusterName)
 	klog.V(1).Infof("joining cluster. cluster namespace: %s", opts.ClusterNamespace)

pkg/scheduler/scheduler.go

@@ -320,6 +320,8 @@ func (s *Scheduler) getPlacement(resourceBinding *workv1alpha1.ResourceBinding)
 	return placement, string(placementBytes), nil
 }
 
+//nolint:gocyclo
+// Note: ignore the cyclomatic complexity issue to get gocyclo on board. Tracked by: https://github.com/karmada-io/karmada/issues/460
 func (s *Scheduler) getScheduleType(key string) ScheduleType {
 	ns, name, err := cache.SplitMetaNamespaceKey(key)
 	if err != nil {

pkg/util/helper/binding.go

@@ -151,6 +151,8 @@ func FetchWorkload(dynamicClient dynamic.Interface, restMapper meta.RESTMapper,
 }
 
 // EnsureWork ensure Work to be created or updated.
+//nolint:gocyclo
+// Note: ignore the cyclomatic complexity issue to get gocyclo on board. Tracked by: https://github.com/karmada-io/karmada/issues/460
 func EnsureWork(c client.Client, workload *unstructured.Unstructured, clusterNames []string, overrideManager overridemanager.OverrideManager,
 	binding metav1.Object, scope apiextensionsv1.ResourceScope) error {
 	referenceRSP, desireReplicaInfos, err := calculateReplicasIfNeeded(c, workload, clusterNames)

pkg/util/objectwatcher/retain.go

@@ -58,6 +58,9 @@ func retainPodFields(desiredObj, clusterObj *unstructured.Unstructured) error {
 	return nil
 }
 
+// retainServiceFields updates the desired service object with values retained from the cluster object.
+//nolint:gocyclo
+// Note: ignore the cyclomatic complexity issue to get gocyclo on board. Tracked by: https://github.com/karmada-io/karmada/issues/460
 func retainServiceFields(desiredObj, clusterObj *unstructured.Unstructured) error {
 	// healthCheckNodePort is allocated by APIServer and unchangeable, so it should be retained while updating
 	healthCheckNodePort, ok, err := unstructured.NestedInt64(clusterObj.Object, "spec", "healthCheckNodePort")