mirror of https://github.com/k3s-io/k3s
297 lines
12 KiB
Go
297 lines
12 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package validation
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import (
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"strings"
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apimachineryvalidation "k8s.io/apimachinery/pkg/api/validation"
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pathvalidation "k8s.io/apimachinery/pkg/api/validation/path"
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"k8s.io/apimachinery/pkg/util/sets"
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"k8s.io/apimachinery/pkg/util/validation/field"
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"k8s.io/kubernetes/pkg/apis/autoscaling"
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apivalidation "k8s.io/kubernetes/pkg/apis/core/validation"
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)
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func ValidateScale(scale *autoscaling.Scale) field.ErrorList {
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allErrs := field.ErrorList{}
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allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&scale.ObjectMeta, true, apimachineryvalidation.NameIsDNSSubdomain, field.NewPath("metadata"))...)
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if scale.Spec.Replicas < 0 {
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allErrs = append(allErrs, field.Invalid(field.NewPath("spec", "replicas"), scale.Spec.Replicas, "must be greater than or equal to 0"))
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}
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return allErrs
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}
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// ValidateHorizontalPodAutoscaler can be used to check whether the given autoscaler name is valid.
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// Prefix indicates this name will be used as part of generation, in which case trailing dashes are allowed.
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var ValidateHorizontalPodAutoscalerName = apivalidation.ValidateReplicationControllerName
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func validateHorizontalPodAutoscalerSpec(autoscaler autoscaling.HorizontalPodAutoscalerSpec, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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if autoscaler.MinReplicas != nil && *autoscaler.MinReplicas < 1 {
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allErrs = append(allErrs, field.Invalid(fldPath.Child("minReplicas"), *autoscaler.MinReplicas, "must be greater than 0"))
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}
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if autoscaler.MaxReplicas < 1 {
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allErrs = append(allErrs, field.Invalid(fldPath.Child("maxReplicas"), autoscaler.MaxReplicas, "must be greater than 0"))
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}
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if autoscaler.MinReplicas != nil && autoscaler.MaxReplicas < *autoscaler.MinReplicas {
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allErrs = append(allErrs, field.Invalid(fldPath.Child("maxReplicas"), autoscaler.MaxReplicas, "must be greater than or equal to `minReplicas`"))
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}
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if refErrs := ValidateCrossVersionObjectReference(autoscaler.ScaleTargetRef, fldPath.Child("scaleTargetRef")); len(refErrs) > 0 {
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allErrs = append(allErrs, refErrs...)
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}
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if refErrs := validateMetrics(autoscaler.Metrics, fldPath.Child("metrics")); len(refErrs) > 0 {
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allErrs = append(allErrs, refErrs...)
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}
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return allErrs
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}
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func ValidateCrossVersionObjectReference(ref autoscaling.CrossVersionObjectReference, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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if len(ref.Kind) == 0 {
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allErrs = append(allErrs, field.Required(fldPath.Child("kind"), ""))
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} else {
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for _, msg := range pathvalidation.IsValidPathSegmentName(ref.Kind) {
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allErrs = append(allErrs, field.Invalid(fldPath.Child("kind"), ref.Kind, msg))
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}
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}
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if len(ref.Name) == 0 {
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allErrs = append(allErrs, field.Required(fldPath.Child("name"), ""))
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} else {
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for _, msg := range pathvalidation.IsValidPathSegmentName(ref.Name) {
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allErrs = append(allErrs, field.Invalid(fldPath.Child("name"), ref.Name, msg))
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}
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}
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return allErrs
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}
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func ValidateHorizontalPodAutoscaler(autoscaler *autoscaling.HorizontalPodAutoscaler) field.ErrorList {
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allErrs := apivalidation.ValidateObjectMeta(&autoscaler.ObjectMeta, true, ValidateHorizontalPodAutoscalerName, field.NewPath("metadata"))
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allErrs = append(allErrs, validateHorizontalPodAutoscalerSpec(autoscaler.Spec, field.NewPath("spec"))...)
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return allErrs
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}
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func ValidateHorizontalPodAutoscalerUpdate(newAutoscaler, oldAutoscaler *autoscaling.HorizontalPodAutoscaler) field.ErrorList {
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allErrs := apivalidation.ValidateObjectMetaUpdate(&newAutoscaler.ObjectMeta, &oldAutoscaler.ObjectMeta, field.NewPath("metadata"))
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allErrs = append(allErrs, validateHorizontalPodAutoscalerSpec(newAutoscaler.Spec, field.NewPath("spec"))...)
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return allErrs
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}
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func ValidateHorizontalPodAutoscalerStatusUpdate(newAutoscaler, oldAutoscaler *autoscaling.HorizontalPodAutoscaler) field.ErrorList {
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allErrs := apivalidation.ValidateObjectMetaUpdate(&newAutoscaler.ObjectMeta, &oldAutoscaler.ObjectMeta, field.NewPath("metadata"))
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status := newAutoscaler.Status
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(status.CurrentReplicas), field.NewPath("status", "currentReplicas"))...)
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(status.DesiredReplicas), field.NewPath("status", "desiredReplicasa"))...)
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return allErrs
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}
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func validateMetrics(metrics []autoscaling.MetricSpec, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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for i, metricSpec := range metrics {
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idxPath := fldPath.Index(i)
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if targetErrs := validateMetricSpec(metricSpec, idxPath); len(targetErrs) > 0 {
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allErrs = append(allErrs, targetErrs...)
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}
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}
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return allErrs
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}
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var validMetricSourceTypes = sets.NewString(string(autoscaling.ObjectMetricSourceType), string(autoscaling.PodsMetricSourceType), string(autoscaling.ResourceMetricSourceType), string(autoscaling.ExternalMetricSourceType))
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var validMetricSourceTypesList = validMetricSourceTypes.List()
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func validateMetricSpec(spec autoscaling.MetricSpec, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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if len(string(spec.Type)) == 0 {
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allErrs = append(allErrs, field.Required(fldPath.Child("type"), "must specify a metric source type"))
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}
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if !validMetricSourceTypes.Has(string(spec.Type)) {
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allErrs = append(allErrs, field.NotSupported(fldPath.Child("type"), spec.Type, validMetricSourceTypesList))
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}
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typesPresent := sets.NewString()
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if spec.Object != nil {
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typesPresent.Insert("object")
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if typesPresent.Len() == 1 {
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allErrs = append(allErrs, validateObjectSource(spec.Object, fldPath.Child("object"))...)
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}
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}
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if spec.External != nil {
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typesPresent.Insert("external")
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if typesPresent.Len() == 1 {
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allErrs = append(allErrs, validateExternalSource(spec.External, fldPath.Child("external"))...)
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}
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}
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if spec.Pods != nil {
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typesPresent.Insert("pods")
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if typesPresent.Len() == 1 {
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allErrs = append(allErrs, validatePodsSource(spec.Pods, fldPath.Child("pods"))...)
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}
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}
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if spec.Resource != nil {
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typesPresent.Insert("resource")
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if typesPresent.Len() == 1 {
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allErrs = append(allErrs, validateResourceSource(spec.Resource, fldPath.Child("resource"))...)
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}
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}
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expectedField := strings.ToLower(string(spec.Type))
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if !typesPresent.Has(expectedField) {
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allErrs = append(allErrs, field.Required(fldPath.Child(expectedField), "must populate information for the given metric source"))
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}
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if typesPresent.Len() != 1 {
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typesPresent.Delete(expectedField)
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for typ := range typesPresent {
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allErrs = append(allErrs, field.Forbidden(fldPath.Child(typ), "must populate the given metric source only"))
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}
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}
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return allErrs
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}
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func validateObjectSource(src *autoscaling.ObjectMetricSource, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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allErrs = append(allErrs, ValidateCrossVersionObjectReference(src.DescribedObject, fldPath.Child("describedObject"))...)
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allErrs = append(allErrs, validateMetricIdentifier(src.Metric, fldPath.Child("metric"))...)
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if &src.Target == nil {
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allErrs = append(allErrs, field.Required(fldPath.Child("target"), "must specify a metric target"))
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} else {
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allErrs = append(allErrs, validateMetricTarget(src.Target, fldPath.Child("target"))...)
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}
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if src.Target.Value == nil && src.Target.AverageValue == nil {
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allErrs = append(allErrs, field.Required(fldPath.Child("target").Child("averageValue"), "must set either a target value or averageValue"))
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}
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return allErrs
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}
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func validateExternalSource(src *autoscaling.ExternalMetricSource, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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allErrs = append(allErrs, validateMetricIdentifier(src.Metric, fldPath.Child("metric"))...)
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if &src.Target == nil {
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allErrs = append(allErrs, field.Required(fldPath.Child("target"), "must specify a metric target"))
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} else {
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allErrs = append(allErrs, validateMetricTarget(src.Target, fldPath.Child("target"))...)
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}
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if src.Target.Value == nil && src.Target.AverageValue == nil {
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allErrs = append(allErrs, field.Required(fldPath.Child("target").Child("averageValue"), "must set either a target value for metric or a per-pod target"))
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}
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if src.Target.Value != nil && src.Target.AverageValue != nil {
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allErrs = append(allErrs, field.Forbidden(fldPath.Child("target").Child("value"), "may not set both a target value for metric and a per-pod target"))
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}
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return allErrs
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}
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func validatePodsSource(src *autoscaling.PodsMetricSource, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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allErrs = append(allErrs, validateMetricIdentifier(src.Metric, fldPath.Child("metric"))...)
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if &src.Target == nil {
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allErrs = append(allErrs, field.Required(fldPath.Child("target"), "must specify a metric target"))
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} else {
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allErrs = append(allErrs, validateMetricTarget(src.Target, fldPath.Child("target"))...)
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}
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if src.Target.AverageValue == nil {
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allErrs = append(allErrs, field.Required(fldPath.Child("target").Child("averageValue"), "must specify a positive target averageValue"))
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}
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return allErrs
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}
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func validateResourceSource(src *autoscaling.ResourceMetricSource, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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if len(src.Name) == 0 {
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allErrs = append(allErrs, field.Required(fldPath.Child("name"), "must specify a resource name"))
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}
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if &src.Target == nil {
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allErrs = append(allErrs, field.Required(fldPath.Child("target"), "must specify a metric target"))
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} else {
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allErrs = append(allErrs, validateMetricTarget(src.Target, fldPath.Child("target"))...)
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}
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if src.Target.AverageUtilization == nil && src.Target.AverageValue == nil {
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allErrs = append(allErrs, field.Required(fldPath.Child("target").Child("averageUtilization"), "must set either a target raw value or a target utilization"))
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}
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if src.Target.AverageUtilization != nil && src.Target.AverageValue != nil {
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allErrs = append(allErrs, field.Forbidden(fldPath.Child("target").Child("averageValue"), "may not set both a target raw value and a target utilization"))
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}
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return allErrs
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}
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func validateMetricTarget(mt autoscaling.MetricTarget, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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if len(mt.Type) == 0 {
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allErrs = append(allErrs, field.Required(fldPath.Child("type"), "must specify a metric target type"))
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}
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if mt.Type != autoscaling.UtilizationMetricType &&
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mt.Type != autoscaling.ValueMetricType &&
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mt.Type != autoscaling.AverageValueMetricType {
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allErrs = append(allErrs, field.Invalid(fldPath.Child("type"), mt.Type, "must be either Utilization, Value, or AverageValue"))
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}
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if mt.Value != nil && mt.Value.Sign() != 1 {
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allErrs = append(allErrs, field.Invalid(fldPath.Child("value"), mt.Value, "must be positive"))
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}
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if mt.AverageValue != nil && mt.AverageValue.Sign() != 1 {
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allErrs = append(allErrs, field.Invalid(fldPath.Child("averageValue"), mt.AverageValue, "must be positive"))
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}
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if mt.AverageUtilization != nil && *mt.AverageUtilization < 1 {
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allErrs = append(allErrs, field.Invalid(fldPath.Child("averageUtilization"), mt.AverageUtilization, "must be greater than 0"))
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}
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return allErrs
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}
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func validateMetricIdentifier(id autoscaling.MetricIdentifier, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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if len(id.Name) == 0 {
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allErrs = append(allErrs, field.Required(fldPath.Child("name"), "must specify a metric name"))
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} else {
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for _, msg := range pathvalidation.IsValidPathSegmentName(id.Name) {
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allErrs = append(allErrs, field.Invalid(fldPath.Child("name"), id.Name, msg))
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}
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}
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return allErrs
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}
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