Golang field.ErrorList类代码示例

func filterInvalidPods(pods []*api.Pod, source string, recorder record.EventRecorder) (filtered []*api.Pod) {
	names := sets.String{}
	for i, pod := range pods {
		var errlist field.ErrorList
		if errs := validation.ValidatePod(pod); len(errs) != 0 {
			errlist = append(errlist, errs...)
			// If validation fails, don't trust it any further -
			// even Name could be bad.
		} else {
			name := kubecontainer.GetPodFullName(pod)
			if names.Has(name) {
				// TODO: when validation becomes versioned, this gets a bit
				// more complicated.
				errlist = append(errlist, field.Duplicate(field.NewPath("metadata", "name"), pod.Name))
			} else {
				names.Insert(name)
			}
		}
		if len(errlist) > 0 {
			name := bestPodIdentString(pod)
			err := errlist.ToAggregate()
			glog.Warningf("Pod[%d] (%s) from %s failed validation, ignoring: %v", i+1, name, source, err)
			recorder.Eventf(pod, api.EventTypeWarning, kubecontainer.FailedValidation, "Error validating pod %s from %s, ignoring: %v", name, source, err)
			continue
		}
		filtered = append(filtered, pod)
	}
	return
}

// NewInvalid returns an error indicating the item is invalid and cannot be processed.
func NewInvalid(kind, name string, errs field.ErrorList) error {
	causes := make([]unversioned.StatusCause, 0, len(errs))
	for i := range errs {
		err := errs[i]
		causes = append(causes, unversioned.StatusCause{
			Type:    unversioned.CauseType(err.Type),
			Message: err.ErrorBody(),
			Field:   err.Field,
		})
	}
	return &StatusError{unversioned.Status{
		Status: unversioned.StatusFailure,
		Code:   StatusUnprocessableEntity, // RFC 4918: StatusUnprocessableEntity
		Reason: unversioned.StatusReasonInvalid,
		Details: &unversioned.StatusDetails{
			Kind:   kind,
			Name:   name,
			Causes: causes,
		},
		Message: fmt.Sprintf("%s %q is invalid: %v", kind, name, errs.ToAggregate()),
	}}
}

// PodConstraintsFunc verifies that all required resources are present on the pod
// In addition, it validates that the resources are valid (i.e. requests < limits)
func PodConstraintsFunc(required []api.ResourceName, object runtime.Object) error {
	pod, ok := object.(*api.Pod)
	if !ok {
		return fmt.Errorf("Unexpected input object %v", object)
	}

	// Pod level resources are often set during admission control
	// As a consequence, we want to verify that resources are valid prior
	// to ever charging quota prematurely in case they are not.
	allErrs := field.ErrorList{}
	fldPath := field.NewPath("spec").Child("containers")
	for i, ctr := range pod.Spec.Containers {
		idxPath := fldPath.Index(i)
		allErrs = append(allErrs, validation.ValidateResourceRequirements(&ctr.Resources, idxPath.Child("resources"))...)
	}
	if len(allErrs) > 0 {
		return allErrs.ToAggregate()
	}

	// TODO: fix this when we have pod level cgroups
	// since we do not yet pod level requests/limits, we need to ensure each
	// container makes an explict request or limit for a quota tracked resource
	requiredSet := quota.ToSet(required)
	missingSet := sets.NewString()
	for i := range pod.Spec.Containers {
		requests := pod.Spec.Containers[i].Resources.Requests
		limits := pod.Spec.Containers[i].Resources.Limits
		containerUsage := podUsageHelper(requests, limits)
		containerSet := quota.ToSet(quota.ResourceNames(containerUsage))
		if !containerSet.Equal(requiredSet) {
			difference := requiredSet.Difference(containerSet)
			missingSet.Insert(difference.List()...)
		}
	}
	if len(missingSet) == 0 {
		return nil
	}
	return fmt.Errorf("must specify %s", strings.Join(missingSet.List(), ","))
}

// Constraints verifies that all required resources are present on the pod
// In addition, it validates that the resources are valid (i.e. requests < limits)
func (p *podEvaluator) Constraints(required []api.ResourceName, item runtime.Object) error {
	pod, ok := item.(*api.Pod)
	if !ok {
		return fmt.Errorf("Unexpected input object %v", item)
	}

	// Pod level resources are often set during admission control
	// As a consequence, we want to verify that resources are valid prior
	// to ever charging quota prematurely in case they are not.
	allErrs := field.ErrorList{}
	fldPath := field.NewPath("spec").Child("containers")
	for i, ctr := range pod.Spec.Containers {
		allErrs = append(allErrs, validation.ValidateResourceRequirements(&ctr.Resources, fldPath.Index(i).Child("resources"))...)
	}
	fldPath = field.NewPath("spec").Child("initContainers")
	for i, ctr := range pod.Spec.InitContainers {
		allErrs = append(allErrs, validation.ValidateResourceRequirements(&ctr.Resources, fldPath.Index(i).Child("resources"))...)
	}
	if len(allErrs) > 0 {
		return allErrs.ToAggregate()
	}

	// TODO: fix this when we have pod level resource requirements
	// since we do not yet pod level requests/limits, we need to ensure each
	// container makes an explict request or limit for a quota tracked resource
	requiredSet := quota.ToSet(required)
	missingSet := sets.NewString()
	for i := range pod.Spec.Containers {
		enforcePodContainerConstraints(&pod.Spec.Containers[i], requiredSet, missingSet)
	}
	for i := range pod.Spec.InitContainers {
		enforcePodContainerConstraints(&pod.Spec.InitContainers[i], requiredSet, missingSet)
	}
	if len(missingSet) == 0 {
		return nil
	}
	return fmt.Errorf("must specify %s", strings.Join(missingSet.List(), ","))
}

// NewInvalid returns an error indicating the item is invalid and cannot be processed.
func NewInvalid(qualifiedKind schema.GroupKind, name string, errs field.ErrorList) *StatusError {
	causes := make([]metav1.StatusCause, 0, len(errs))
	for i := range errs {
		err := errs[i]
		causes = append(causes, metav1.StatusCause{
			Type:    metav1.CauseType(err.Type),
			Message: err.ErrorBody(),
			Field:   err.Field,
		})
	}
	return &StatusError{metav1.Status{
		Status: metav1.StatusFailure,
		Code:   StatusUnprocessableEntity, // RFC 4918: StatusUnprocessableEntity
		Reason: metav1.StatusReasonInvalid,
		Details: &metav1.StatusDetails{
			Group:  qualifiedKind.Group,
			Kind:   qualifiedKind.Kind,
			Name:   name,
			Causes: causes,
		},
		Message: fmt.Sprintf("%s %q is invalid: %v", qualifiedKind.String(), name, errs.ToAggregate()),
	}}
}