func getResourceRequirements(cpu, memory resource.Quantity) current.ResourceRequirements {
	res := current.ResourceRequirements{}
	res.Limits = current.ResourceList{}
	if cpu.Value() > 0 {
		res.Limits[current.ResourceCPU] = util.NewIntOrStringFromInt(int(cpu.Value()))
	}
	if memory.Value() > 0 {
		res.Limits[current.ResourceMemory] = util.NewIntOrStringFromInt(int(memory.Value()))
	}

	return res
}

// syncResourceQuota runs a complete sync of current status
func (rm *ResourceQuotaController) syncResourceQuota(quota api.ResourceQuota) (err error) {

	// quota is dirty if any part of spec hard limits differs from the status hard limits
	dirty := !api.Semantic.DeepEqual(quota.Spec.Hard, quota.Status.Hard)

	// dirty tracks if the usage status differs from the previous sync,
	// if so, we send a new usage with latest status
	// if this is our first sync, it will be dirty by default, since we need track usage
	dirty = dirty || (quota.Status.Hard == nil || quota.Status.Used == nil)

	// Create a usage object that is based on the quota resource version
	usage := api.ResourceQuota{
		ObjectMeta: api.ObjectMeta{
			Name:            quota.Name,
			Namespace:       quota.Namespace,
			ResourceVersion: quota.ResourceVersion,
			Labels:          quota.Labels,
			Annotations:     quota.Annotations},
		Status: api.ResourceQuotaStatus{
			Hard: api.ResourceList{},
			Used: api.ResourceList{},
		},
	}

	// set the hard values supported on the quota
	for k, v := range quota.Spec.Hard {
		usage.Status.Hard[k] = *v.Copy()
	}
	// set any last known observed status values for usage
	for k, v := range quota.Status.Used {
		usage.Status.Used[k] = *v.Copy()
	}

	set := map[api.ResourceName]bool{}
	for k := range usage.Status.Hard {
		set[k] = true
	}

	pods := &api.PodList{}
	if set[api.ResourcePods] || set[api.ResourceMemory] || set[api.ResourceCPU] {
		pods, err = rm.kubeClient.Pods(usage.Namespace).List(labels.Everything(), fields.Everything())
		if err != nil {
			return err
		}
	}

	filteredPods := FilterQuotaPods(pods.Items)

	// iterate over each resource, and update observation
	for k := range usage.Status.Hard {

		// look if there is a used value, if none, we are definitely dirty
		prevQuantity, found := usage.Status.Used[k]
		if !found {
			dirty = true
		}

		var value *resource.Quantity

		switch k {
		case api.ResourcePods:
			value = resource.NewQuantity(int64(len(filteredPods)), resource.DecimalSI)
		case api.ResourceMemory:
			val := int64(0)
			for _, pod := range filteredPods {
				val = val + PodMemory(pod).Value()
			}
			value = resource.NewQuantity(int64(val), resource.DecimalSI)
		case api.ResourceCPU:
			val := int64(0)
			for _, pod := range filteredPods {
				val = val + PodCPU(pod).MilliValue()
			}
			value = resource.NewMilliQuantity(int64(val), resource.DecimalSI)
		case api.ResourceServices:
			items, err := rm.kubeClient.Services(usage.Namespace).List(labels.Everything())
			if err != nil {
				return err
			}
			value = resource.NewQuantity(int64(len(items.Items)), resource.DecimalSI)
		case api.ResourceReplicationControllers:
			items, err := rm.kubeClient.ReplicationControllers(usage.Namespace).List(labels.Everything())
			if err != nil {
				return err
			}
			value = resource.NewQuantity(int64(len(items.Items)), resource.DecimalSI)
		case api.ResourceQuotas:
			items, err := rm.kubeClient.ResourceQuotas(usage.Namespace).List(labels.Everything())
			if err != nil {
				return err
			}
			value = resource.NewQuantity(int64(len(items.Items)), resource.DecimalSI)
		case api.ResourceSecrets:
			items, err := rm.kubeClient.Secrets(usage.Namespace).List(labels.Everything(), fields.Everything())
			if err != nil {
				return err
			}
			value = resource.NewQuantity(int64(len(items.Items)), resource.DecimalSI)
		case api.ResourcePersistentVolumeClaims:
//.........这里部分代码省略.........

func validateBasicResource(quantity resource.Quantity) errs.ValidationErrorList {
	if quantity.Value() < 0 {
		return errs.ValidationErrorList{fmt.Errorf("%v is not a valid resource quantity", quantity.Value())}
	}
	return errs.ValidationErrorList{}
}