/
controller.go
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/
controller.go
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/*
Copyright 2023 The KubeEdge 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 controller
import (
"fmt"
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
k8sinformer "k8s.io/client-go/informers"
"k8s.io/client-go/kubernetes"
"k8s.io/klog/v2"
"github.com/kubeedge/kubeedge/cloud/pkg/taskmanager/util"
"github.com/kubeedge/kubeedge/cloud/pkg/taskmanager/util/manager"
api "github.com/kubeedge/kubeedge/pkg/apis/fsm/v1alpha1"
"github.com/kubeedge/kubeedge/pkg/apis/operations/v1alpha1"
crdClientset "github.com/kubeedge/kubeedge/pkg/client/clientset/versioned"
"github.com/kubeedge/kubeedge/pkg/util/fsm"
)
type Controller interface {
Name() string
Start() error
ReportNodeStatus(string, string, fsm.Event) (api.State, error)
ReportTaskStatus(string, fsm.Event) (api.State, error)
ValidateNode(util.TaskMessage) []v1.Node
GetNodeStatus(string) ([]v1alpha1.TaskStatus, error)
UpdateNodeStatus(string, []v1alpha1.TaskStatus) error
StageCompleted(taskID string, state api.State) bool
}
type BaseController struct {
name string
Informer k8sinformer.SharedInformerFactory
TaskManager *manager.TaskCache
MessageChan chan util.TaskMessage
KubeClient kubernetes.Interface
CrdClient crdClientset.Interface
}
func (bc *BaseController) Name() string {
return bc.name
}
func (bc *BaseController) Start() error {
return fmt.Errorf("controller not implemented")
}
func (bc *BaseController) StageCompleted(taskID string, state api.State) bool {
return false
}
func (bc *BaseController) ValidateNode(taskMessage util.TaskMessage) []v1.Node {
var validateNodes []v1.Node
nodes, err := bc.getNodeList(taskMessage.NodeNames, taskMessage.LabelSelector)
if err != nil {
klog.Warningf("get node list error: %s", err.Error())
return nil
}
for _, node := range nodes {
if !util.IsEdgeNode(node) {
klog.Warningf("Node(%s) is not edge node", node.Name)
continue
}
ready := isNodeReady(node)
if !ready {
continue
}
validateNodes = append(validateNodes, *node)
}
return validateNodes
}
func (bc *BaseController) GetNodeStatus(name string) ([]v1alpha1.TaskStatus, error) {
return nil, fmt.Errorf("function GetNodeStatus need to be init")
}
func (bc *BaseController) UpdateNodeStatus(name string, status []v1alpha1.TaskStatus) error {
return fmt.Errorf("function UpdateNodeStatus need to be init")
}
func isNodeReady(node *v1.Node) bool {
for _, condition := range node.Status.Conditions {
if condition.Type == v1.NodeReady && condition.Status != v1.ConditionTrue {
klog.Warningf("Node(%s) is in NotReady state", node.Name)
return false
}
}
return true
}
func (bc *BaseController) ReportNodeStatus(taskID string, nodeID string, event fsm.Event) (api.State, error) {
return "", fmt.Errorf("function ReportNodeStatus need to be init")
}
func (bc *BaseController) ReportTaskStatus(taskID string, event fsm.Event) (api.State, error) {
return "", fmt.Errorf("function ReportTaskStatus need to be init")
}
var (
controllers = map[string]Controller{}
)
func Register(name string, controller Controller) {
if _, ok := controllers[name]; ok {
klog.Warning("controller %s exists ", name)
}
controllers[name] = controller
}
func StartAllController() error {
for name, controller := range controllers {
err := controller.Start()
if err != nil {
return fmt.Errorf("start %s controller failed: %s", name, err.Error())
}
}
return nil
}
func GetController(name string) (Controller, error) {
controller, ok := controllers[name]
if !ok {
return nil, fmt.Errorf("controller %s is not registered", name)
}
return controller, nil
}
func (bc *BaseController) getNodeList(nodeNames []string, labelSelector *metav1.LabelSelector) ([]*v1.Node, error) {
var nodesToUpgrade []*v1.Node
if len(nodeNames) != 0 {
for _, name := range nodeNames {
node, err := bc.Informer.Core().V1().Nodes().Lister().Get(name)
if err != nil {
return nil, fmt.Errorf("failed to get node with name %s: %v", name, err)
}
nodesToUpgrade = append(nodesToUpgrade, node)
}
} else if labelSelector != nil {
selector, err := metav1.LabelSelectorAsSelector(labelSelector)
if err != nil {
return nil, fmt.Errorf("labelSelector(%s) is not valid: %v", labelSelector, err)
}
nodes, err := bc.Informer.Core().V1().Nodes().Lister().List(selector)
if err != nil {
return nil, fmt.Errorf("failed to get nodes with label %s: %v", selector.String(), err)
}
nodesToUpgrade = nodes
}
return nodesToUpgrade, nil
}