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/kapis/cluster/v1alpha1/label_handler.go

@@ -0,0 +1,196 @@
+/*
+ * Please refer to the LICENSE file in the root directory of the project.
+ * https://github.com/kubesphere/kubesphere/blob/master/LICENSE
+ */
+
+package v1alpha1
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"strings"
+
+	"github.com/emicklei/go-restful/v3"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/apimachinery/pkg/util/rand"
+	"k8s.io/apimachinery/pkg/util/sets"
+	clusterv1alpha1 "kubesphere.io/api/cluster/v1alpha1"
+
+	"kubesphere.io/kubesphere/pkg/api"
+	apiv1alpha1 "kubesphere.io/kubesphere/pkg/api/cluster/v1alpha1"
+)
+
+func labelExists(req apiv1alpha1.CreateLabelRequest, labels *clusterv1alpha1.LabelList) bool {
+	for _, label := range labels.Items {
+		if label.Spec.Key == req.Key && label.Spec.Value == req.Value {
+			return true
+		}
+	}
+	return false
+}
+
+func (h *handler) createLabels(request *restful.Request, response *restful.Response) {
+	var labelRequests []apiv1alpha1.CreateLabelRequest
+	if err := request.ReadEntity(&labelRequests); err != nil {
+		api.HandleBadRequest(response, request, err)
+		return
+	}
+
+	allLabels := &clusterv1alpha1.LabelList{}
+	if err := h.client.List(context.Background(), allLabels); err != nil {
+		api.HandleBadRequest(response, request, err)
+		return
+	}
+
+	results := make([]*clusterv1alpha1.Label, 0)
+	for _, r := range labelRequests {
+		if labelExists(r, allLabels) {
+			api.HandleBadRequest(response, request, fmt.Errorf("label %s/%s already exists", r.Key, r.Value))
+			return
+		}
+
+		obj := &clusterv1alpha1.Label{
+			ObjectMeta: metav1.ObjectMeta{
+				Name:       rand.String(6),
+				Finalizers: []string{clusterv1alpha1.LabelFinalizer},
+			},
+			Spec: clusterv1alpha1.LabelSpec{
+				Key:   strings.TrimSpace(r.Key),
+				Value: strings.TrimSpace(r.Value),
+			},
+		}
+		if err := h.client.Create(context.Background(), obj); err != nil {
+			api.HandleBadRequest(response, request, err)
+			return
+		}
+		results = append(results, obj)
+	}
+	response.WriteEntity(results)
+}
+
+func (h *handler) updateLabel(request *restful.Request, response *restful.Response) {
+	label := &clusterv1alpha1.Label{}
+	if err := h.client.Get(context.Background(), types.NamespacedName{Name: request.PathParameter("label")}, label); err != nil {
+		api.HandleBadRequest(response, request, err)
+		return
+	}
+
+	switch request.QueryParameter("action") {
+	case "unbind": // unbind clusters
+		var unbindRequest apiv1alpha1.UnbindClustersRequest
+		if err := request.ReadEntity(&unbindRequest); err != nil {
+			api.HandleBadRequest(response, request, err)
+			return
+		}
+		for _, name := range unbindRequest.Clusters {
+			cluster := &clusterv1alpha1.Cluster{}
+			if err := h.client.Get(context.Background(), types.NamespacedName{Name: name}, cluster); err != nil {
+				api.HandleBadRequest(response, request, err)
+				return
+			}
+			cluster = cluster.DeepCopy()
+			delete(cluster.Labels, fmt.Sprintf(clusterv1alpha1.ClusterLabelFormat, label.Name))
+			if err := h.client.Update(context.Background(), cluster); err != nil {
+				api.HandleBadRequest(response, request, err)
+				return
+			}
+		}
+		clusters := sets.NewString(label.Spec.Clusters...)
+		clusters.Delete(unbindRequest.Clusters...)
+		label.Spec.Clusters = clusters.List()
+		if err := h.client.Update(context.Background(), label); err != nil {
+			api.HandleBadRequest(response, request, err)
+			return
+		}
+		response.WriteEntity(label)
+	default: // update label key/value
+		var labelRequest apiv1alpha1.CreateLabelRequest
+		if err := request.ReadEntity(&labelRequest); err != nil {
+			api.HandleBadRequest(response, request, err)
+			return
+		}
+
+		allLabels := &clusterv1alpha1.LabelList{}
+		if err := h.client.List(context.Background(), allLabels); err != nil {
+			api.HandleBadRequest(response, request, err)
+			return
+		}
+
+		if labelExists(labelRequest, allLabels) {
+			api.HandleBadRequest(response, request, fmt.Errorf("label %s/%s already exists", labelRequest.Key, labelRequest.Value))
+			return
+		}
+		label.Spec.Key = strings.TrimSpace(labelRequest.Key)
+		label.Spec.Value = strings.TrimSpace(labelRequest.Value)
+		if err := h.client.Update(context.Background(), label); err != nil {
+			api.HandleBadRequest(response, request, err)
+			return
+		}
+		response.WriteEntity(label)
+	}
+}
+
+func (h *handler) deleteLabels(request *restful.Request, response *restful.Response) {
+	var names []string
+	if err := request.ReadEntity(&names); err != nil {
+		api.HandleBadRequest(response, request, err)
+		return
+	}
+
+	for _, name := range names {
+		label := &clusterv1alpha1.Label{
+			ObjectMeta: metav1.ObjectMeta{
+				Name: name,
+			},
+		}
+		if err := h.client.Delete(context.Background(), label); err != nil {
+			api.HandleBadRequest(response, request, err)
+			return
+		}
+	}
+	response.WriteHeader(http.StatusOK)
+}
+
+func (h *handler) bindingClusters(request *restful.Request, response *restful.Response) {
+	var bindingRequest apiv1alpha1.BindingClustersRequest
+	if err := request.ReadEntity(&bindingRequest); err != nil {
+		api.HandleBadRequest(response, request, err)
+		return
+	}
+
+	for _, name := range bindingRequest.Labels {
+		label := &clusterv1alpha1.Label{}
+		if err := h.client.Get(context.Background(), types.NamespacedName{Name: name}, label); err != nil {
+			api.HandleBadRequest(response, request, err)
+			return
+		}
+
+		label.Spec.Clusters = append(label.Spec.Clusters, bindingRequest.Clusters...)
+		if err := h.client.Update(context.Background(), label); err != nil {
+			api.HandleBadRequest(response, request, err)
+			return
+		}
+	}
+
+	response.WriteHeader(http.StatusOK)
+}
+
+func (h *handler) listLabelGroups(request *restful.Request, response *restful.Response) {
+	allLabels := &clusterv1alpha1.LabelList{}
+	if err := h.client.List(context.Background(), allLabels); err != nil {
+		api.HandleBadRequest(response, request, err)
+		return
+	}
+
+	results := make(map[string][]apiv1alpha1.LabelValue)
+	for _, label := range allLabels.Items {
+		results[label.Spec.Key] = append(results[label.Spec.Key], apiv1alpha1.LabelValue{
+			Value: label.Spec.Value,
+			ID:    label.Name,
+		})
+	}
+
+	response.WriteEntity(results)
+}