kubesphere/pkg/models/workspaces/workspaces.go

/*

 Copyright 2019 The KubeSphere Authors.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.

*/
package workspaces

import (
	"fmt"
	"github.com/golang/glog"
	"github.com/kiali/kiali/log"
	"k8s.io/apimachinery/pkg/runtime/schema"
	"kubesphere.io/kubesphere/pkg/constants"
	"kubesphere.io/kubesphere/pkg/db"
	"kubesphere.io/kubesphere/pkg/informers"
	"kubesphere.io/kubesphere/pkg/models"
	"kubesphere.io/kubesphere/pkg/models/devops"
	"kubesphere.io/kubesphere/pkg/models/iam"
	"kubesphere.io/kubesphere/pkg/models/resources"
	"kubesphere.io/kubesphere/pkg/params"
	clientset "kubesphere.io/kubesphere/pkg/simple/client"
	"kubesphere.io/kubesphere/pkg/utils/k8sutil"
	"kubesphere.io/kubesphere/pkg/utils/sliceutil"
	"strings"

	core "k8s.io/api/core/v1"

	"errors"
	"k8s.io/api/rbac/v1"
	apierrors "k8s.io/apimachinery/pkg/api/errors"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/labels"
)

func Namespaces(workspaceName string) ([]*core.Namespace, error) {
	namespaceLister := informers.SharedInformerFactory().Core().V1().Namespaces().Lister()
	namespaces, err := namespaceLister.List(labels.SelectorFromSet(labels.Set{constants.WorkspaceLabelKey: workspaceName}))

	if err != nil {
		return nil, err
	}

	if namespaces == nil {
		return make([]*core.Namespace, 0), nil
	}

	out := make([]*core.Namespace, len(namespaces))

	for i, v := range namespaces {
		out[i] = v.DeepCopy()
	}

	return out, nil
}

func DeleteNamespace(workspace string, namespaceName string) error {
	namespace, err := clientset.ClientSets().K8s().Kubernetes().CoreV1().Namespaces().Get(namespaceName, metav1.GetOptions{})
	if err != nil {
		return err
	}
	if namespace.Labels[constants.WorkspaceLabelKey] == workspace {
		deletePolicy := metav1.DeletePropagationForeground
		return clientset.ClientSets().K8s().Kubernetes().CoreV1().Namespaces().Delete(namespaceName, &metav1.DeleteOptions{PropagationPolicy: &deletePolicy})
	} else {
		return errors.New("resource not found")
	}
}

func RemoveUser(workspaceName string, username string) error {
	workspaceRole, err := iam.GetUserWorkspaceRole(workspaceName, username)
	if err != nil {
		return err
	}
	err = DeleteWorkspaceRoleBinding(workspaceName, username, workspaceRole.Annotations[constants.DisplayNameAnnotationKey])
	if err != nil {
		return err
	}
	return nil
}

func InviteUser(workspaceName string, user *models.User) error {

	workspaceRole, err := iam.GetUserWorkspaceRole(workspaceName, user.Username)

	if err != nil && !apierrors.IsNotFound(err) {
		glog.Errorf("get workspace role failed: %+v", err)
		return err
	}

	workspaceRoleName := fmt.Sprintf("workspace:%s:%s", workspaceName, strings.TrimPrefix(user.WorkspaceRole, "workspace-"))
	var currentWorkspaceRoleName string
	if workspaceRole != nil {
		currentWorkspaceRoleName = workspaceRole.Name
	}

	if currentWorkspaceRoleName != workspaceRoleName && currentWorkspaceRoleName != "" {
		err := DeleteWorkspaceRoleBinding(workspaceName, user.Username, workspaceRole.Annotations[constants.DisplayNameAnnotationKey])
		if err != nil {
			glog.Errorf("delete workspace role binding failed: %+v", err)
			return err
		}
	} else if currentWorkspaceRoleName != "" {
		return nil
	}

	return CreateWorkspaceRoleBinding(workspaceName, user.Username, user.WorkspaceRole)
}

func CreateWorkspaceRoleBinding(workspace, username string, role string) error {

	if !sliceutil.HasString(constants.WorkSpaceRoles, role) {
		return apierrors.NewNotFound(schema.GroupResource{Resource: "workspace role"}, role)
	}

	roleBindingName := fmt.Sprintf("workspace:%s:%s", workspace, strings.TrimPrefix(role, "workspace-"))
	workspaceRoleBinding, err := informers.SharedInformerFactory().Rbac().V1().ClusterRoleBindings().Lister().Get(roleBindingName)
	if err != nil {
		return err
	}

	if !k8sutil.ContainsUser(workspaceRoleBinding.Subjects, username) {
		workspaceRoleBinding = workspaceRoleBinding.DeepCopy()
		workspaceRoleBinding.Subjects = append(workspaceRoleBinding.Subjects, v1.Subject{APIGroup: "rbac.authorization.k8s.io", Kind: "User", Name: username})
		_, err = clientset.ClientSets().K8s().Kubernetes().RbacV1().ClusterRoleBindings().Update(workspaceRoleBinding)
		if err != nil {
			log.Errorf("update workspace role binding failed: %+v", err)
			return err
		}
	}

	return nil
}

func DeleteWorkspaceRoleBinding(workspace, username string, role string) error {

	if !sliceutil.HasString(constants.WorkSpaceRoles, role) {
		return apierrors.NewNotFound(schema.GroupResource{Resource: "workspace role"}, role)
	}

	roleBindingName := fmt.Sprintf("workspace:%s:%s", workspace, strings.TrimPrefix(role, "workspace-"))

	workspaceRoleBinding, err := informers.SharedInformerFactory().Rbac().V1().ClusterRoleBindings().Lister().Get(roleBindingName)
	if err != nil {
		return err
	}
	workspaceRoleBinding = workspaceRoleBinding.DeepCopy()

	for i, v := range workspaceRoleBinding.Subjects {
		if v.Kind == v1.UserKind && v.Name == username {
			workspaceRoleBinding.Subjects = append(workspaceRoleBinding.Subjects[:i], workspaceRoleBinding.Subjects[i+1:]...)
			i--
		}
	}

	workspaceRoleBinding, err = clientset.ClientSets().K8s().Kubernetes().RbacV1().ClusterRoleBindings().Update(workspaceRoleBinding)

	return err
}

func GetDevOpsProjects(workspaceName string) ([]string, error) {

	dbconn, err := clientset.ClientSets().MySQL()
	if err != nil {
		return nil, err
	}

	query := dbconn.Select(devops.DevOpsProjectIdColumn).
		From(devops.DevOpsProjectTableName).
		Where(db.And(db.Eq(devops.DevOpsProjectWorkSpaceColumn, workspaceName),
			db.Eq(devops.StatusColumn, devops.StatusActive)))

	devOpsProjects := make([]string, 0)

	if _, err := query.Load(&devOpsProjects); err != nil {
		return nil, err
	}
	return devOpsProjects, nil
}

func WorkspaceUserCount(workspace string) (int, error) {
	count, err := iam.WorkspaceUsersTotalCount(workspace)
	if err != nil {
		return 0, err
	}
	return count, nil
}

func GetOrgRoles(name string) ([]string, error) {
	return constants.WorkSpaceRoles, nil
}

func WorkspaceNamespaces(workspaceName string) ([]string, error) {
	ns, err := Namespaces(workspaceName)

	namespaces := make([]string, 0)

	if err != nil {
		return namespaces, err
	}

	for i := 0; i < len(ns); i++ {
		namespaces = append(namespaces, ns[i].Name)
	}

	return namespaces, nil
}

func WorkspaceCount() (int, error) {

	ws, err := resources.ListResources("", resources.Workspaces, &params.Conditions{}, "", false, 1, 0)

	if err != nil {
		return 0, err
	}

	return ws.TotalCount, nil
}

func GetAllProjectNums() (int, error) {
	namespaceLister := informers.SharedInformerFactory().Core().V1().Namespaces().Lister()
	list, err := namespaceLister.List(labels.Everything())
	if err != nil {
		return 0, err
	}
	return len(list), nil
}

func GetAllDevOpsProjectsNums() (int, error) {
	dbconn, err := clientset.ClientSets().MySQL()
	if err != nil {
		return 0, err
	}

	query := dbconn.Select(devops.DevOpsProjectIdColumn).
		From(devops.DevOpsProjectTableName).
		Where(db.Eq(devops.StatusColumn, devops.StatusActive))

	devOpsProjects := make([]string, 0)

	if _, err := query.Load(&devOpsProjects); err != nil {
		return 0, err
	}
	return len(devOpsProjects), nil
}