feat: kubesphere 4.0 (#6115)

* feat: kubesphere 4.0

Signed-off-by: ci-bot <ci-bot@kubesphere.io>

* feat: kubesphere 4.0

Signed-off-by: ci-bot <ci-bot@kubesphere.io>

---------

Signed-off-by: ci-bot <ci-bot@kubesphere.io>
Co-authored-by: ks-ci-bot <ks-ci-bot@example.com>
Co-authored-by: joyceliu <joyceliu@yunify.com>

pkg/models/resources/v1alpha3/label/label.go

@@ -0,0 +1,75 @@
+/*
+ * Please refer to the LICENSE file in the root directory of the project.
+ * https://github.com/kubesphere/kubesphere/blob/master/LICENSE
+ */
+
+package label
+
+import (
+	"context"
+	"strings"
+
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/types"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	runtimeclient "sigs.k8s.io/controller-runtime/pkg/client"
+
+	clusterv1alpha1 "kubesphere.io/api/cluster/v1alpha1"
+
+	"kubesphere.io/kubesphere/pkg/api"
+	"kubesphere.io/kubesphere/pkg/apiserver/query"
+	"kubesphere.io/kubesphere/pkg/models/resources/v1alpha3"
+)
+
+type labelsGetter struct {
+	cache runtimeclient.Reader
+}
+
+func New(cache runtimeclient.Reader) v1alpha3.Interface {
+	return &labelsGetter{cache: cache}
+}
+
+func (n labelsGetter) Get(_, name string) (runtime.Object, error) {
+	label := &clusterv1alpha1.Label{}
+	return label, n.cache.Get(context.Background(), types.NamespacedName{Name: name}, label)
+}
+
+func (n labelsGetter) List(_ string, query *query.Query) (*api.ListResult, error) {
+	labels := &clusterv1alpha1.LabelList{}
+	if err := n.cache.List(context.Background(), labels, client.MatchingLabelsSelector{Selector: query.Selector()}); err != nil {
+		return nil, err
+	}
+
+	var result []runtime.Object
+	for _, item := range labels.Items {
+		result = append(result, item.DeepCopy())
+	}
+	return v1alpha3.DefaultList(result, query, n.compare, n.filter), nil
+}
+
+func (n labelsGetter) filter(item runtime.Object, filter query.Filter) bool {
+	label, ok := item.(*clusterv1alpha1.Label)
+	if !ok {
+		return false
+	}
+
+	switch filter.Field {
+	case query.FieldName:
+		return strings.Contains(label.Spec.Key, string(filter.Value)) || strings.Contains(label.Spec.Value, string(filter.Value))
+	default:
+		return false
+	}
+}
+
+func (n labelsGetter) compare(left runtime.Object, right runtime.Object, field query.Field) bool {
+	leftLabel, ok := left.(*clusterv1alpha1.Label)
+	if !ok {
+		return false
+	}
+
+	rightLabel, ok := right.(*clusterv1alpha1.Label)
+	if !ok {
+		return true
+	}
+	return v1alpha3.DefaultObjectMetaCompare(leftLabel.ObjectMeta, rightLabel.ObjectMeta, field)
+}