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exposureclass.go
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exposureclass.go
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// SPDX-FileCopyrightText: 2024 SAP SE or an SAP affiliate company and Gardener contributors
//
// SPDX-License-Identifier: Apache-2.0
package validation
import (
apivalidation "k8s.io/apimachinery/pkg/api/validation"
metav1validation "k8s.io/apimachinery/pkg/apis/meta/v1/validation"
"k8s.io/apimachinery/pkg/util/validation"
"k8s.io/apimachinery/pkg/util/validation/field"
"github.com/gardener/gardener/pkg/apis/core"
)
// ValidateExposureClass validates a ExposureClass object.
func ValidateExposureClass(exposureClass *core.ExposureClass) field.ErrorList {
var allErrs = field.ErrorList{}
handlerNameLength := len(exposureClass.Handler)
for _, errorMessage := range validation.IsDNS1123Label(exposureClass.Handler) {
allErrs = append(allErrs, field.Invalid(field.NewPath("handler"), exposureClass.Name, errorMessage))
}
// Restrict the max length of handler names to 34 characters to ensure that the exposureclass
// handler default namespace scheme (istio-ingress-handler-{handler-name}--{zone}, see GardenletConfiguration)
// does not exceed the max amount of characters for namespaces.
if handlerNameLength > 34 {
allErrs = append(allErrs, field.Invalid(field.NewPath("handler"), exposureClass.Name, "exposure class handler is restricted to 34 characters"))
}
if exposureClass.Scheduling != nil {
if exposureClass.Scheduling.SeedSelector != nil {
allErrs = append(allErrs, metav1validation.ValidateLabelSelector(&exposureClass.Scheduling.SeedSelector.LabelSelector, metav1validation.LabelSelectorValidationOptions{AllowInvalidLabelValueInSelector: true}, field.NewPath("scheduling", "seedSelector"))...)
}
allErrs = append(allErrs, ValidateTolerations(exposureClass.Scheduling.Tolerations, field.NewPath("scheduling", "tolerations"))...)
}
return allErrs
}
// ValidateExposureClassUpdate validates a ExposureClass object before an update.
func ValidateExposureClassUpdate(new, old *core.ExposureClass) field.ErrorList {
var allErrs = field.ErrorList{}
allErrs = append(allErrs, apivalidation.ValidateImmutableField(old.Handler, new.Handler, field.NewPath("handler"))...)
allErrs = append(allErrs, apivalidation.ValidateImmutableField(old.Scheduling, new.Scheduling, field.NewPath("scheduling"))...)
return allErrs
}