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This commit is contained in:
Daniel Smith
319
pkg/apis/experimental/validation/validation.go
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319
pkg/apis/experimental/validation/validation.go
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/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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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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"strconv"
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"k8s.io/kubernetes/pkg/api"
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apivalidation "k8s.io/kubernetes/pkg/api/validation"
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"k8s.io/kubernetes/pkg/apis/experimental"
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"k8s.io/kubernetes/pkg/labels"
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"k8s.io/kubernetes/pkg/util"
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errs "k8s.io/kubernetes/pkg/util/fielderrors"
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"k8s.io/kubernetes/pkg/util/sets"
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)
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const isNegativeErrorMsg string = `must be non-negative`
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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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func ValidateHorizontalPodAutoscalerName(name string, prefix bool) (bool, string) {
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// TODO: finally move it to pkg/api/validation and use nameIsDNSSubdomain function
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return apivalidation.ValidateReplicationControllerName(name, prefix)
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}
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func validateHorizontalPodAutoscalerSpec(autoscaler experimental.HorizontalPodAutoscalerSpec) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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if autoscaler.MinCount < 0 {
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allErrs = append(allErrs, errs.NewFieldInvalid("minCount", autoscaler.MinCount, `must be non-negative`))
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}
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if autoscaler.MaxCount < autoscaler.MinCount {
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allErrs = append(allErrs, errs.NewFieldInvalid("maxCount", autoscaler.MaxCount, `must be bigger or equal to minCount`))
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}
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if autoscaler.ScaleRef == nil {
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allErrs = append(allErrs, errs.NewFieldRequired("scaleRef"))
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}
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resource := autoscaler.Target.Resource.String()
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if resource != string(api.ResourceMemory) && resource != string(api.ResourceCPU) {
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allErrs = append(allErrs, errs.NewFieldInvalid("target.resource", resource, "resource not supported by autoscaler"))
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}
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quantity := autoscaler.Target.Quantity.Value()
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if quantity < 0 {
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allErrs = append(allErrs, errs.NewFieldInvalid("target.quantity", quantity, "must be non-negative"))
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}
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return allErrs
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}
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func ValidateHorizontalPodAutoscaler(autoscaler *experimental.HorizontalPodAutoscaler) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&autoscaler.ObjectMeta, true, ValidateHorizontalPodAutoscalerName).Prefix("metadata")...)
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allErrs = append(allErrs, validateHorizontalPodAutoscalerSpec(autoscaler.Spec)...)
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return allErrs
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}
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func ValidateHorizontalPodAutoscalerUpdate(newAutoscler, oldAutoscaler *experimental.HorizontalPodAutoscaler) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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allErrs = append(allErrs, apivalidation.ValidateObjectMetaUpdate(&newAutoscler.ObjectMeta, &oldAutoscaler.ObjectMeta).Prefix("metadata")...)
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allErrs = append(allErrs, validateHorizontalPodAutoscalerSpec(newAutoscler.Spec)...)
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return allErrs
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}
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func ValidateThirdPartyResourceUpdate(old, update *experimental.ThirdPartyResource) errs.ValidationErrorList {
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return ValidateThirdPartyResource(update)
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}
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func ValidateThirdPartyResource(obj *experimental.ThirdPartyResource) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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if len(obj.Name) == 0 {
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allErrs = append(allErrs, errs.NewFieldInvalid("name", obj.Name, "name must be non-empty"))
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}
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versions := sets.String{}
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for ix := range obj.Versions {
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version := &obj.Versions[ix]
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if len(version.Name) == 0 {
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allErrs = append(allErrs, errs.NewFieldInvalid("name", version, "name can not be empty"))
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}
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if versions.Has(version.Name) {
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allErrs = append(allErrs, errs.NewFieldDuplicate("version", version))
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}
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versions.Insert(version.Name)
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}
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return allErrs
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}
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// ValidateDaemonSet tests if required fields in the DaemonSet are set.
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func ValidateDaemonSet(controller *experimental.DaemonSet) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&controller.ObjectMeta, true, apivalidation.ValidateReplicationControllerName).Prefix("metadata")...)
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allErrs = append(allErrs, ValidateDaemonSetSpec(&controller.Spec).Prefix("spec")...)
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return allErrs
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}
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// ValidateDaemonSetUpdate tests if required fields in the DaemonSet are set.
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func ValidateDaemonSetUpdate(oldController, controller *experimental.DaemonSet) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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allErrs = append(allErrs, apivalidation.ValidateObjectMetaUpdate(&controller.ObjectMeta, &oldController.ObjectMeta).Prefix("metadata")...)
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allErrs = append(allErrs, ValidateDaemonSetSpec(&controller.Spec).Prefix("spec")...)
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allErrs = append(allErrs, ValidateDaemonSetTemplateUpdate(oldController.Spec.Template, controller.Spec.Template).Prefix("spec.template")...)
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return allErrs
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}
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// ValidateDaemonSetTemplateUpdate tests that certain fields in the daemon set's pod template are not updated.
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func ValidateDaemonSetTemplateUpdate(oldPodTemplate, podTemplate *api.PodTemplateSpec) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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podSpec := podTemplate.Spec
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// podTemplate.Spec is not a pointer, so we can modify NodeSelector and NodeName directly.
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podSpec.NodeSelector = oldPodTemplate.Spec.NodeSelector
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podSpec.NodeName = oldPodTemplate.Spec.NodeName
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// In particular, we do not allow updates to container images at this point.
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if !api.Semantic.DeepEqual(oldPodTemplate.Spec, podSpec) {
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// TODO: Pinpoint the specific field that causes the invalid error after we have strategic merge diff
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allErrs = append(allErrs, errs.NewFieldInvalid("spec", "content of spec is not printed out, please refer to the \"details\"", "may not update fields other than spec.nodeSelector"))
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}
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return allErrs
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}
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// ValidateDaemonSetSpec tests if required fields in the DaemonSetSpec are set.
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func ValidateDaemonSetSpec(spec *experimental.DaemonSetSpec) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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selector := labels.Set(spec.Selector).AsSelector()
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if selector.Empty() {
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allErrs = append(allErrs, errs.NewFieldRequired("selector"))
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}
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if spec.Template == nil {
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allErrs = append(allErrs, errs.NewFieldRequired("template"))
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} else {
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labels := labels.Set(spec.Template.Labels)
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if !selector.Matches(labels) {
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allErrs = append(allErrs, errs.NewFieldInvalid("template.metadata.labels", spec.Template.Labels, "selector does not match template"))
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}
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allErrs = append(allErrs, apivalidation.ValidatePodTemplateSpec(spec.Template).Prefix("template")...)
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// Daemons typically run on more than one node, so mark Read-Write persistent disks as invalid.
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allErrs = append(allErrs, apivalidation.ValidateReadOnlyPersistentDisks(spec.Template.Spec.Volumes).Prefix("template.spec.volumes")...)
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// RestartPolicy has already been first-order validated as per ValidatePodTemplateSpec().
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if spec.Template.Spec.RestartPolicy != api.RestartPolicyAlways {
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allErrs = append(allErrs, errs.NewFieldValueNotSupported("template.spec.restartPolicy", spec.Template.Spec.RestartPolicy, []string{string(api.RestartPolicyAlways)}))
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}
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}
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return allErrs
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}
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// ValidateDaemonSetName can be used to check whether the given daemon set name is valid.
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// Prefix indicates this name will be used as part of generation, in which case
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// trailing dashes are allowed.
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func ValidateDaemonSetName(name string, prefix bool) (bool, string) {
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return apivalidation.NameIsDNSSubdomain(name, prefix)
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}
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// Validates that the given name can be used as a deployment name.
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func ValidateDeploymentName(name string, prefix bool) (bool, string) {
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return apivalidation.NameIsDNSSubdomain(name, prefix)
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}
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func ValidatePositiveIntOrPercent(intOrPercent util.IntOrString, fieldName string) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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if intOrPercent.Kind == util.IntstrString {
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if !util.IsValidPercent(intOrPercent.StrVal) {
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allErrs = append(allErrs, errs.NewFieldInvalid(fieldName, intOrPercent, "value should be int(5) or percentage(5%)"))
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}
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} else if intOrPercent.Kind == util.IntstrInt {
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allErrs = append(allErrs, apivalidation.ValidatePositiveField(int64(intOrPercent.IntVal), fieldName)...)
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}
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return allErrs
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}
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func getPercentValue(intOrStringValue util.IntOrString) (int, bool) {
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if intOrStringValue.Kind != util.IntstrString || !util.IsValidPercent(intOrStringValue.StrVal) {
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return 0, false
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}
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value, _ := strconv.Atoi(intOrStringValue.StrVal[:len(intOrStringValue.StrVal)-1])
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return value, true
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}
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func getIntOrPercentValue(intOrStringValue util.IntOrString) int {
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value, isPercent := getPercentValue(intOrStringValue)
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if isPercent {
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return value
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}
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return intOrStringValue.IntVal
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}
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func IsNotMoreThan100Percent(intOrStringValue util.IntOrString, fieldName string) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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value, isPercent := getPercentValue(intOrStringValue)
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if !isPercent || value <= 100 {
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return nil
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}
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allErrs = append(allErrs, errs.NewFieldInvalid(fieldName, intOrStringValue, "should not be more than 100%"))
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return allErrs
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}
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func ValidateRollingUpdateDeployment(rollingUpdate *experimental.RollingUpdateDeployment, fieldName string) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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allErrs = append(allErrs, ValidatePositiveIntOrPercent(rollingUpdate.MaxUnavailable, fieldName+"maxUnavailable")...)
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allErrs = append(allErrs, ValidatePositiveIntOrPercent(rollingUpdate.MaxSurge, fieldName+".maxSurge")...)
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if getIntOrPercentValue(rollingUpdate.MaxUnavailable) == 0 && getIntOrPercentValue(rollingUpdate.MaxSurge) == 0 {
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// Both MaxSurge and MaxUnavailable cannot be zero.
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allErrs = append(allErrs, errs.NewFieldInvalid(fieldName+".maxUnavailable", rollingUpdate.MaxUnavailable, "cannot be 0 when maxSurge is 0 as well"))
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}
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// Validate that MaxUnavailable is not more than 100%.
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allErrs = append(allErrs, IsNotMoreThan100Percent(rollingUpdate.MaxUnavailable, fieldName+".maxUnavailable")...)
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allErrs = append(allErrs, apivalidation.ValidatePositiveField(int64(rollingUpdate.MinReadySeconds), fieldName+".minReadySeconds")...)
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return allErrs
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}
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func ValidateDeploymentStrategy(strategy *experimental.DeploymentStrategy, fieldName string) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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if strategy.RollingUpdate == nil {
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return allErrs
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}
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switch strategy.Type {
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case experimental.DeploymentRecreate:
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allErrs = append(allErrs, errs.NewFieldForbidden("rollingUpdate", "rollingUpdate should be nil when strategy type is "+experimental.DeploymentRecreate))
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case experimental.DeploymentRollingUpdate:
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allErrs = append(allErrs, ValidateRollingUpdateDeployment(strategy.RollingUpdate, "rollingUpdate")...)
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}
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return allErrs
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}
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// Validates given deployment spec.
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func ValidateDeploymentSpec(spec *experimental.DeploymentSpec) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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allErrs = append(allErrs, apivalidation.ValidateNonEmptySelector(spec.Selector, "selector")...)
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allErrs = append(allErrs, apivalidation.ValidatePositiveField(int64(spec.Replicas), "replicas")...)
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allErrs = append(allErrs, apivalidation.ValidatePodTemplateSpecForRC(spec.Template, spec.Selector, spec.Replicas, "template")...)
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allErrs = append(allErrs, ValidateDeploymentStrategy(&spec.Strategy, "strategy")...)
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allErrs = append(allErrs, apivalidation.ValidateLabelName(spec.UniqueLabelKey, "uniqueLabel")...)
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return allErrs
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}
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func ValidateDeploymentUpdate(old, update *experimental.Deployment) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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allErrs = append(allErrs, apivalidation.ValidateObjectMetaUpdate(&update.ObjectMeta, &old.ObjectMeta).Prefix("metadata")...)
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allErrs = append(allErrs, ValidateDeploymentSpec(&update.Spec).Prefix("spec")...)
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return allErrs
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}
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func ValidateDeployment(obj *experimental.Deployment) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&obj.ObjectMeta, true, ValidateDeploymentName).Prefix("metadata")...)
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allErrs = append(allErrs, ValidateDeploymentSpec(&obj.Spec).Prefix("spec")...)
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return allErrs
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}
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func ValidateThirdPartyResourceDataUpdate(old, update *experimental.ThirdPartyResourceData) errs.ValidationErrorList {
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return ValidateThirdPartyResourceData(update)
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}
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func ValidateThirdPartyResourceData(obj *experimental.ThirdPartyResourceData) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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if len(obj.Name) == 0 {
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allErrs = append(allErrs, errs.NewFieldInvalid("name", obj.Name, "name must be non-empty"))
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}
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return allErrs
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}
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func ValidateJob(job *experimental.Job) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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// Jobs and rcs have the same name validation
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allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&job.ObjectMeta, true, apivalidation.ValidateReplicationControllerName).Prefix("metadata")...)
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allErrs = append(allErrs, ValidateJobSpec(&job.Spec).Prefix("spec")...)
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return allErrs
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}
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func ValidateJobSpec(spec *experimental.JobSpec) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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if spec.Parallelism != nil && *spec.Parallelism < 0 {
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allErrs = append(allErrs, errs.NewFieldInvalid("parallelism", spec.Parallelism, isNegativeErrorMsg))
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}
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if spec.Completions != nil && *spec.Completions < 0 {
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allErrs = append(allErrs, errs.NewFieldInvalid("completions", spec.Completions, isNegativeErrorMsg))
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}
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selector := labels.Set(spec.Selector).AsSelector()
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if selector.Empty() {
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allErrs = append(allErrs, errs.NewFieldRequired("selector"))
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}
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if spec.Template == nil {
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allErrs = append(allErrs, errs.NewFieldRequired("template"))
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} else {
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labels := labels.Set(spec.Template.Labels)
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if !selector.Matches(labels) {
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allErrs = append(allErrs, errs.NewFieldInvalid("template.labels", spec.Template.Labels, "selector does not match template"))
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}
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allErrs = append(allErrs, apivalidation.ValidatePodTemplateSpec(spec.Template).Prefix("template")...)
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if spec.Template.Spec.RestartPolicy != api.RestartPolicyOnFailure &&
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spec.Template.Spec.RestartPolicy != api.RestartPolicyNever {
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allErrs = append(allErrs, errs.NewFieldValueNotSupported("template.spec.restartPolicy",
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spec.Template.Spec.RestartPolicy, []string{string(api.RestartPolicyOnFailure), string(api.RestartPolicyNever)}))
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}
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}
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return allErrs
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}
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func ValidateJobUpdate(oldJob, job *experimental.Job) errs.ValidationErrorList {
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allErrs := errs.ValidationErrorList{}
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allErrs = append(allErrs, apivalidation.ValidateObjectMetaUpdate(&oldJob.ObjectMeta, &job.ObjectMeta).Prefix("metadata")...)
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allErrs = append(allErrs, ValidateJobSpec(&job.Spec).Prefix("spec")...)
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return allErrs
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}
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Block a user