allow deleting cluster roles

api/http/handler/kubernetes/cluster_roles.go

@@ -3,7 +3,9 @@ package kubernetes
 import (
 	"net/http"
 
+	models "github.com/portainer/portainer/api/http/models/kubernetes"
 	httperror "github.com/portainer/portainer/pkg/libhttp/error"
+	"github.com/portainer/portainer/pkg/libhttp/request"
 	"github.com/portainer/portainer/pkg/libhttp/response"
 	"github.com/rs/zerolog/log"
 )
@@ -43,3 +45,36 @@ func (handler *Handler) getAllKubernetesClusterRoles(w http.ResponseWriter, r *h
 
 	return response.JSON(w, clusterroles)
 }
+
+// @id deleteClusterRoles
+// @summary Delete the provided cluster roles
+// @description Delete the provided cluster roles for the given Kubernetes environment
+// @description **Access policy**: administrator
+// @tags rbac_enabled
+// @security ApiKeyAuth
+// @security jwt
+// @produce text/plain
+// @param id path int true "Environment(Endpoint) identifier"
+// @param payload body models.K8sClusterRoleDeleteRequests true "Cluster roles to delete"
+// @success 200 "Success"
+// @failure 500 "Server error"
+// @router /kubernetes/{id}/cluster_roles/delete [POST]
+func (handler *Handler) deleteClusterRoles(w http.ResponseWriter, r *http.Request) *httperror.HandlerError {
+	var payload models.K8sClusterRoleDeleteRequests
+	err := request.DecodeAndValidateJSONPayload(r, &payload)
+	if err != nil {
+		return httperror.BadRequest("Invalid request payload", err)
+	}
+
+	cli, handlerErr := handler.getProxyKubeClient(r)
+	if handlerErr != nil {
+		return handlerErr
+	}
+
+	err = cli.DeleteClusterRoles(payload)
+	if err != nil {
+		return httperror.InternalServerError("Failed to delete cluster roles", err)
+	}
+
+	return nil
+}

api/http/handler/kubernetes/handler.go

@@ -56,6 +56,7 @@ func NewHandler(bouncer security.BouncerService, authorizationService *authoriza
 	endpointRouter.Handle("/configmaps", httperror.LoggerHandler(h.GetAllKubernetesConfigMaps)).Methods(http.MethodGet)
 	endpointRouter.Handle("/configmaps/count", httperror.LoggerHandler(h.getAllKubernetesConfigMapsCount)).Methods(http.MethodGet)
 	endpointRouter.Handle("/cluster_roles", httperror.LoggerHandler(h.getAllKubernetesClusterRoles)).Methods(http.MethodGet)
+	endpointRouter.Handle("/cluster_roles/delete", httperror.LoggerHandler(h.deleteClusterRoles)).Methods(http.MethodPost)
 	endpointRouter.Handle("/cluster_role_bindings", httperror.LoggerHandler(h.getAllKubernetesClusterRoleBindings)).Methods(http.MethodGet)
 	endpointRouter.Handle("/configmaps", httperror.LoggerHandler(h.GetAllKubernetesConfigMaps)).Methods(http.MethodGet)
 	endpointRouter.Handle("/configmaps/count", httperror.LoggerHandler(h.getAllKubernetesConfigMapsCount)).Methods(http.MethodGet)

api/http/models/kubernetes/cluster_roles.go

@@ -1,10 +1,28 @@
 package kubernetes
 
-import "time"
+import (
+	"errors"
+	"net/http"
+	"time"
 
-type K8sClusterRole struct {
-	Name         string    `json:"name"`
-	CreationDate time.Time `json:"creationDate"`
-	Uid          string    `json:"uid"`
-	IsSystem     bool      `json:"isSystem"`
+	"k8s.io/apimachinery/pkg/types"
+)
+
+type (
+	K8sClusterRole struct {
+		Name         string    `json:"name"`
+		UID          types.UID `json:"uid"`
+		CreationDate time.Time `json:"creationDate"`
+		IsSystem     bool      `json:"isSystem"`
+	}
+
+	K8sClusterRoleDeleteRequests []string
+)
+
+func (r K8sClusterRoleDeleteRequests) Validate(request *http.Request) error {
+	if len(r) == 0 {
+		return errors.New("missing deletion request list in payload")
+	}
+
+	return nil
 }

api/kubernetes/cli/cluster_role.go

@@ -6,8 +6,11 @@ import (
 	"strings"
 
 	models "github.com/portainer/portainer/api/http/models/kubernetes"
+	"github.com/portainer/portainer/api/internal/errorlist"
+	"github.com/rs/zerolog/log"
 	rbacv1 "k8s.io/api/rbac/v1"
-	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	k8serrors "k8s.io/apimachinery/pkg/api/errors"
+	meta "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
 // GetClusterRoles gets all the clusterRoles for at the cluster level in a k8s endpoint.
@@ -22,7 +25,7 @@ func (kcl *KubeClient) GetClusterRoles() ([]models.K8sClusterRole, error) {
 
 // fetchClusterRoles returns a list of all Roles in the specified namespace.
 func (kcl *KubeClient) fetchClusterRoles() ([]models.K8sClusterRole, error) {
-	clusterRoles, err := kcl.cli.RbacV1().ClusterRoles().List(context.TODO(), metav1.ListOptions{})
+	clusterRoles, err := kcl.cli.RbacV1().ClusterRoles().List(context.TODO(), meta.ListOptions{})
 	if err != nil {
 		return nil, err
 	}
@@ -40,11 +43,39 @@ func parseClusterRole(clusterRole rbacv1.ClusterRole) models.K8sClusterRole {
 	return models.K8sClusterRole{
 		Name:         clusterRole.Name,
 		CreationDate: clusterRole.CreationTimestamp.Time,
-		Uid:          string(clusterRole.UID),
+		UID:          clusterRole.UID,
 		IsSystem:     isSystemClusterRole(&clusterRole),
 	}
 }
 
+func (kcl *KubeClient) DeleteClusterRoles(req models.K8sClusterRoleDeleteRequests) error {
+	var errors []error
+	for _, name := range req {
+		client := kcl.cli.RbacV1().ClusterRoles()
+
+		clusterRole, err := client.Get(context.Background(), name, meta.GetOptions{})
+		if err != nil {
+			if k8serrors.IsNotFound(err) {
+				continue
+			}
+			// this is a more serious error to do with the client so we return right away
+			return err
+		}
+
+		if isSystemClusterRole(clusterRole) {
+			log.Warn().Str("role_name", name).Msg("ignoring delete of 'system' cluster role, not allowed")
+		}
+
+		err = client.Delete(context.Background(), name, meta.DeleteOptions{})
+		if err != nil {
+			log.Err(err).Str("role_name", name).Msg("unable to delete the cluster role")
+			errors = append(errors, err)
+		}
+	}
+
+	return errorlist.Combine(errors)
+}
+
 func isSystemClusterRole(role *rbacv1.ClusterRole) bool {
 	if role.Namespace == "kube-system" || role.Namespace == "kube-public" ||
 		role.Namespace == "kube-node-lease" || role.Namespace == "portainer" {