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75 lines
2.7 KiB
Go
75 lines
2.7 KiB
Go
/*
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Copyright 2015 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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"k8s.io/kubernetes/pkg/api/unversioned"
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"k8s.io/kubernetes/pkg/util/validation"
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"k8s.io/kubernetes/pkg/util/validation/field"
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)
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func ValidateLabelSelector(ps *unversioned.LabelSelector, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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if ps == nil {
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return allErrs
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}
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allErrs = append(allErrs, ValidateLabels(ps.MatchLabels, fldPath.Child("matchLabels"))...)
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for i, expr := range ps.MatchExpressions {
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allErrs = append(allErrs, ValidateLabelSelectorRequirement(expr, fldPath.Child("matchExpressions").Index(i))...)
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}
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return allErrs
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}
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func ValidateLabelSelectorRequirement(sr unversioned.LabelSelectorRequirement, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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switch sr.Operator {
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case unversioned.LabelSelectorOpIn, unversioned.LabelSelectorOpNotIn:
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if len(sr.Values) == 0 {
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allErrs = append(allErrs, field.Required(fldPath.Child("values"), "must be specified when `operator` is 'In' or 'NotIn'"))
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}
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case unversioned.LabelSelectorOpExists, unversioned.LabelSelectorOpDoesNotExist:
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if len(sr.Values) > 0 {
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allErrs = append(allErrs, field.Forbidden(fldPath.Child("values"), "may not be specified when `operator` is 'Exists' or 'DoesNotExist'"))
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}
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default:
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allErrs = append(allErrs, field.Invalid(fldPath.Child("operator"), sr.Operator, "not a valid selector operator"))
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}
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allErrs = append(allErrs, ValidateLabelName(sr.Key, fldPath.Child("key"))...)
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return allErrs
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}
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// ValidateLabelName validates that the label name is correctly defined.
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func ValidateLabelName(labelName string, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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for _, msg := range validation.IsQualifiedName(labelName) {
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allErrs = append(allErrs, field.Invalid(fldPath, labelName, msg))
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}
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return allErrs
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}
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// ValidateLabels validates that a set of labels are correctly defined.
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func ValidateLabels(labels map[string]string, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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for k, v := range labels {
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allErrs = append(allErrs, ValidateLabelName(k, fldPath)...)
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for _, msg := range validation.IsValidLabelValue(v) {
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allErrs = append(allErrs, field.Invalid(fldPath, v, msg))
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}
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}
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return allErrs
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}
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