90 lines
3.3 KiB
Go
90 lines
3.3 KiB
Go
/*
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Copyright 2014 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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// This code is directly lifted from the Kubernetes codebase.
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// For reference:
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// https://github.com/kubernetes/kubernetes/blob/release-1.23/pkg/apis/core/validation/validation.go#L5001-L5033
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// https://github.com/kubernetes/kubernetes/blob/release-1.23/pkg/apis/core/validation/validation.go#L3305-L3326
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package lifted
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import (
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"strings"
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corev1 "k8s.io/api/core/v1"
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unversionedvalidation "k8s.io/apimachinery/pkg/apis/meta/v1/validation"
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"k8s.io/apimachinery/pkg/util/sets"
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"k8s.io/apimachinery/pkg/util/validation"
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"k8s.io/apimachinery/pkg/util/validation/field"
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)
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// +lifted-source: https://github.com/kubernetes/kubernetes/blob/release-1.23/pkg/apis/core/validation/validation.go#L5001-L5033
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// +lifted-changed
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// ValidateClusterTaints tests if given taints have valid data.
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func ValidateClusterTaints(taints []corev1.Taint, fldPath *field.Path) field.ErrorList {
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allErrors := field.ErrorList{}
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uniqueTaints := map[corev1.TaintEffect]sets.String{}
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for i, currTaint := range taints {
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idxPath := fldPath.Index(i)
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// validate the taint key
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allErrors = append(allErrors, unversionedvalidation.ValidateLabelName(currTaint.Key, idxPath.Child("key"))...)
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// validate the taint value
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if errs := validation.IsValidLabelValue(currTaint.Value); len(errs) != 0 {
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allErrors = append(allErrors, field.Invalid(idxPath.Child("value"), currTaint.Value, strings.Join(errs, ";")))
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}
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// validate the taint effect
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allErrors = append(allErrors, validateClusterTaintEffect(&currTaint.Effect, false, idxPath.Child("effect"))...)
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// validate if taint is unique by <key, effect>
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if len(uniqueTaints[currTaint.Effect]) > 0 && uniqueTaints[currTaint.Effect].Has(currTaint.Key) {
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duplicatedError := field.Duplicate(idxPath, currTaint)
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duplicatedError.Detail = "taints must be unique by key and effect pair"
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allErrors = append(allErrors, duplicatedError)
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continue
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}
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// add taint to existingTaints for uniqueness check
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if len(uniqueTaints[currTaint.Effect]) == 0 {
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uniqueTaints[currTaint.Effect] = sets.String{}
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}
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uniqueTaints[currTaint.Effect].Insert(currTaint.Key)
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}
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return allErrors
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}
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// +lifted-source: https://github.com/kubernetes/kubernetes/blob/release-1.23/pkg/apis/core/validation/validation.go#L3305-L3326
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// +lifted-changed
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func validateClusterTaintEffect(effect *corev1.TaintEffect, allowEmpty bool, fldPath *field.Path) field.ErrorList {
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if !allowEmpty && len(*effect) == 0 {
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return field.ErrorList{field.Required(fldPath, "")}
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}
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allErrors := field.ErrorList{}
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switch *effect {
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case corev1.TaintEffectNoSchedule, corev1.TaintEffectNoExecute:
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default:
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validValues := []string{
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string(corev1.TaintEffectNoSchedule),
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string(corev1.TaintEffectNoExecute),
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}
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allErrors = append(allErrors, field.NotSupported(fldPath, *effect, validValues))
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}
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return allErrors
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}
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