Golang Quantity.String方法代码示例

// limitRequestRatioConstraint enforces the limit to request ratio over the specified resource
func limitRequestRatioConstraint(limitType api.LimitType, resourceName api.ResourceName, enforced resource.Quantity, request api.ResourceList, limit api.ResourceList) error {
	req, reqExists := request[resourceName]
	lim, limExists := limit[resourceName]
	observedReqValue, observedLimValue, _ := requestLimitEnforcedValues(req, lim, enforced)

	if !reqExists || (observedReqValue == int64(0)) {
		return fmt.Errorf("%s max limit to request ratio per %s is %s, but no request is specified or request is 0.", resourceName, limitType, enforced.String())
	}
	if !limExists || (observedLimValue == int64(0)) {
		return fmt.Errorf("%s max limit to request ratio per %s is %s, but no limit is specified or limit is 0.", resourceName, limitType, enforced.String())
	}

	observedRatio := float64(observedLimValue) / float64(observedReqValue)
	displayObservedRatio := observedRatio
	maxLimitRequestRatio := float64(enforced.Value())
	if enforced.Value() <= resource.MaxMilliValue {
		observedRatio = observedRatio * 1000
		maxLimitRequestRatio = float64(enforced.MilliValue())
	}

	if observedRatio > maxLimitRequestRatio {
		return fmt.Errorf("%s max limit to request ratio per %s is %s, but provided ratio is %f.", resourceName, limitType, enforced.String(), displayObservedRatio)
	}

	return nil
}

// The method veryfies whether resources should be set for the given pod and
// if there is estimation available the method fills Request field.
func (ir initialResources) estimateAndFillResourcesIfNotSet(pod *api.Pod) {
	annotations := []string{}
	for i := range pod.Spec.Containers {
		c := &pod.Spec.Containers[i]
		req := c.Resources.Requests
		lim := c.Resources.Limits
		var cpu, mem *resource.Quantity
		var err error
		if _, ok := req[api.ResourceCPU]; !ok {
			if _, ok2 := lim[api.ResourceCPU]; !ok2 {
				cpu, err = ir.getEstimation(api.ResourceCPU, c, pod.ObjectMeta.Namespace)
				if err != nil {
					glog.Errorf("Error while trying to estimate resources: %v", err)
				}
			}
		}
		if _, ok := req[api.ResourceMemory]; !ok {
			if _, ok2 := lim[api.ResourceMemory]; !ok2 {
				mem, err = ir.getEstimation(api.ResourceMemory, c, pod.ObjectMeta.Namespace)
				if err != nil {
					glog.Errorf("Error while trying to estimate resources: %v", err)
				}
			}
		}

		// If Requests doesn't exits and an estimation was made, create Requests.
		if req == nil && (cpu != nil || mem != nil) {
			c.Resources.Requests = api.ResourceList{}
			req = c.Resources.Requests
		}
		setRes := []string{}
		if cpu != nil {
			glog.Infof("CPU estimation for container %v in pod %v/%v is %v", c.Name, pod.ObjectMeta.Namespace, pod.ObjectMeta.Name, cpu.String())
			setRes = append(setRes, string(api.ResourceCPU))
			req[api.ResourceCPU] = *cpu
		}
		if mem != nil {
			glog.Infof("Memory estimation for container %v in pod  %v/%v is %v", c.Name, pod.ObjectMeta.Namespace, pod.ObjectMeta.Name, mem.String())
			setRes = append(setRes, string(api.ResourceMemory))
			req[api.ResourceMemory] = *mem
		}
		if len(setRes) > 0 {
			a := strings.Join(setRes, ", ") + " request for container " + c.Name
			annotations = append(annotations, a)
		}
	}
	if len(annotations) > 0 {
		if pod.ObjectMeta.Annotations == nil {
			pod.ObjectMeta.Annotations = make(map[string]string)
		}
		val := "Initial Resources plugin set: " + strings.Join(annotations, "; ")
		pod.ObjectMeta.Annotations[initialResourcesAnnotation] = val
	}
}

// maxConstraint enforces the max constraint over the specified resource
func maxConstraint(limitType api.LimitType, resourceName api.ResourceName, enforced resource.Quantity, request api.ResourceList, limit api.ResourceList) error {
	req, reqExists := request[resourceName]
	lim, limExists := limit[resourceName]
	observedReqValue, observedLimValue, enforcedValue := requestLimitEnforcedValues(req, lim, enforced)

	if !limExists {
		return fmt.Errorf("Maximum %s usage per %s is %s.  No limit is specified.", resourceName, limitType, enforced.String())
	}
	if observedLimValue > enforcedValue {
		return fmt.Errorf("Maximum %s usage per %s is %s, but limit is %s.", resourceName, limitType, enforced.String(), lim.String())
	}
	if reqExists && (observedReqValue > enforcedValue) {
		return fmt.Errorf("Maximum %s usage per %s is %s, but request is %s.", resourceName, limitType, enforced.String(), req.String())
	}
	return nil
}