Golang Node.Annotations方法代码示例

func generateNodeAndTaintedNode(oldTaints []api.Taint, newTaints []api.Taint) (*api.Node, *api.Node) {
	var taintedNode *api.Node

	oldTaintsData, _ := json.Marshal(oldTaints)
	// Create a node.
	node := &api.Node{
		ObjectMeta: api.ObjectMeta{
			Name:              "node-name",
			CreationTimestamp: unversioned.Time{Time: time.Now()},
			Annotations: map[string]string{
				api.TaintsAnnotationKey: string(oldTaintsData),
			},
		},
		Spec: api.NodeSpec{
			ExternalID: "node-name",
		},
		Status: api.NodeStatus{},
	}
	clone, _ := conversion.NewCloner().DeepCopy(node)

	newTaintsData, _ := json.Marshal(newTaints)
	// A copy of the same node, but tainted.
	taintedNode = clone.(*api.Node)
	taintedNode.Annotations = map[string]string{
		api.TaintsAnnotationKey: string(newTaintsData),
	}

	return node, taintedNode
}

func addTaint(client *kube_client.Client, node *kube_api.Node, value string) error {
	taints, err := kube_api.GetTaintsFromNodeAnnotations(node.Annotations)
	if err != nil {
		return err
	}

	taint := kube_api.Taint{
		Key:    criticalAddonsOnlyTaintKey,
		Value:  value,
		Effect: kube_api.TaintEffectNoSchedule,
	}
	taints = append(taints, taint)

	taintsJson, err := json.Marshal(taints)
	if err != nil {
		return err
	}

	if node.Annotations == nil {
		node.Annotations = make(map[string]string)
	}
	node.Annotations[kube_api.TaintsAnnotationKey] = string(taintsJson)
	_, err = client.Nodes().Update(node)
	if err != nil {
		return err
	}
	return nil
}

// reconcileCMADAnnotationWithExistingNode reconciles the controller-managed
// attach-detach annotation on a new node and the existing node, returning
// whether the existing node must be updated.
func (kl *Kubelet) reconcileCMADAnnotationWithExistingNode(node, existingNode *api.Node) bool {
	var (
		existingCMAAnnotation    = existingNode.Annotations[volumehelper.ControllerManagedAttachAnnotation]
		newCMAAnnotation, newSet = node.Annotations[volumehelper.ControllerManagedAttachAnnotation]
	)

	if newCMAAnnotation == existingCMAAnnotation {
		return false
	}

	// If the just-constructed node and the existing node do
	// not have the same value, update the existing node with
	// the correct value of the annotation.
	if !newSet {
		glog.Info("Controller attach-detach setting changed to false; updating existing Node")
		delete(existingNode.Annotations, volumehelper.ControllerManagedAttachAnnotation)
	} else {
		glog.Info("Controller attach-detach setting changed to true; updating existing Node")
		if existingNode.Annotations == nil {
			existingNode.Annotations = make(map[string]string)
		}
		existingNode.Annotations[volumehelper.ControllerManagedAttachAnnotation] = newCMAAnnotation
	}

	return true
}

// Create creates a new node api object with the given hostname,
// slave attribute labels and annotations
func Create(
	client *client.Client,
	hostName string,
	slaveAttrLabels,
	annotations map[string]string,
) (*api.Node, error) {
	n := api.Node{
		ObjectMeta: api.ObjectMeta{
			Name: hostName,
		},
		Spec: api.NodeSpec{
			ExternalID: hostName,
		},
		Status: api.NodeStatus{
			Phase: api.NodePending,
		},
	}

	n.Labels = mergeMaps(
		map[string]string{"kubernetes.io/hostname": hostName},
		slaveAttrLabels,
	)

	n.Annotations = annotations

	// try to create
	return client.Nodes().Create(&n)
}

// Create creates a new node api object with the given hostname,
// slave attribute labels and annotations
func Create(
	client unversionedcore.NodesGetter,
	hostName string,
	slaveAttrLabels,
	annotations map[string]string,
) (*api.Node, error) {
	n := api.Node{
		ObjectMeta: api.ObjectMeta{
			Name: hostName,
		},
		Spec: api.NodeSpec{
			ExternalID: hostName,
		},
		Status: api.NodeStatus{
			Phase: api.NodePending,
			// WORKAROUND(sttts): make sure that the Ready condition is the
			// first one. The kube-ui v3 depends on this assumption.
			// TODO(sttts): remove this workaround when kube-ui v4 is used or we
			//              merge this with the statusupdate in the controller manager.
			Conditions: []api.NodeCondition{
				{
					Type:              api.NodeReady,
					Status:            api.ConditionTrue,
					Reason:            slaveReadyReason,
					Message:           slaveReadyMessage,
					LastHeartbeatTime: unversioned.Now(),
				},
			},
		},
	}

	n.Labels = mergeMaps(
		map[string]string{"kubernetes.io/hostname": hostName},
		slaveAttrLabels,
	)

	n.Annotations = annotations

	// try to create
	return client.Nodes().Create(&n)
}