kubesphere/pkg/models/controllers/clusterroles.go

/*
Copyright 2018 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 controllers

import (
	"strings"
	"time"

	"github.com/golang/glog"
	"k8s.io/api/rbac/v1"
	"k8s.io/apimachinery/pkg/labels"
	"k8s.io/client-go/informers"
	"k8s.io/client-go/tools/cache"
)

const systemPrefix = "system:"

func (ctl *ClusterRoleCtl) generateObject(item v1.ClusterRole) *ClusterRole {
	var displayName string
	if item.Annotations != nil && len(item.Annotations[DisplayName]) > 0 {
		displayName = item.Annotations[DisplayName]
	}

	name := item.Name
	if strings.HasPrefix(name, systemPrefix) || item.Annotations == nil || len(item.Annotations[creator]) == 0 {
		return nil
	}

	createTime := item.CreationTimestamp.Time
	if createTime.IsZero() {
		createTime = time.Now()
	}

	object := &ClusterRole{Name: name, CreateTime: createTime, Annotation: MapString{item.Annotations}, DisplayName: displayName}

	return object
}

func (ctl *ClusterRoleCtl) Name() string {
	return ctl.CommonAttribute.Name
}

func (ctl *ClusterRoleCtl) sync(stopChan chan struct{}) {
	db := ctl.DB

	if db.HasTable(&ClusterRole{}) {
		db.DropTable(&ClusterRole{})
	}

	db = db.CreateTable(&ClusterRole{})

	ctl.initListerAndInformer()

	list, err := ctl.lister.List(labels.Everything())
	if err != nil {
		glog.Error(err)
		return
	}

	for _, item := range list {
		obj := ctl.generateObject(*item)
		if obj != nil {
			if err := db.Create(obj).Error; err != nil {
				glog.Error("cluster roles sync error", err)
			}
		}
	}

	ctl.informer.Run(stopChan)
}

func (ctl *ClusterRoleCtl) total() int {
	list, err := ctl.lister.List(labels.Everything())
	if err != nil {
		glog.Errorf("count %s failed, reason:%s", err, ctl.Name())
		return 0
	}

	count := 0
	for _, item := range list {
		if !strings.HasPrefix(item.Name, systemPrefix) && item.Annotations != nil && len(item.Annotations[creator]) > 0 {
			count++
		}
	}

	return count
}

func (ctl *ClusterRoleCtl) initListerAndInformer() {
	db := ctl.DB

	informerFactory := informers.NewSharedInformerFactory(ctl.K8sClient, time.Second*resyncCircle)
	ctl.lister = informerFactory.Rbac().V1().ClusterRoles().Lister()

	informer := informerFactory.Rbac().V1().ClusterRoles().Informer()
	informer.AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc: func(obj interface{}) {

			object := obj.(*v1.ClusterRole)
			mysqlObject := ctl.generateObject(*object)
			if mysqlObject != nil {
				if err := db.Create(mysqlObject).Error; err != nil {
					glog.Error("cluster roles sync error", err)
				}
			}
		},
		UpdateFunc: func(old, new interface{}) {
			object := new.(*v1.ClusterRole)
			mysqlObject := ctl.generateObject(*object)
			if mysqlObject != nil {
				if err := db.Save(mysqlObject).Error; err != nil {
					glog.Error("cluster roles update error", err)
				}
			}
		},
		DeleteFunc: func(obj interface{}) {

			object := obj.(*v1.ClusterRole)

			if err := db.Delete(ClusterRole{}, "name=?", object.Name).Error; err != nil {
				glog.Error("cluster roles delete error", err)
			}
		},
	})
	ctl.informer = informer
}

func (ctl *ClusterRoleCtl) CountWithConditions(conditions string) int {
	var object ClusterRole

	if strings.Contains(conditions, "namespace") {
		conditions = ""
	}
	return countWithConditions(ctl.DB, conditions, &object)
}

func (ctl *ClusterRoleCtl) ListWithConditions(conditions string, paging *Paging, order string) (int, interface{}, error) {
	var object ClusterRole
	var list []ClusterRole
	var total int

	if len(order) == 0 {
		order = "createTime desc"
	}

	db := ctl.DB

	listWithConditions(db, &total, &object, &list, conditions, paging, order)

	return total, list, nil
}

func (ctl *ClusterRoleCtl) Lister() interface{} {

	return ctl.lister
}