mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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114 lines
5.2 KiB
Go
114 lines
5.2 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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"regexp"
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policyapiv1beta1 "k8s.io/api/policy/v1beta1"
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unversionedvalidation "k8s.io/apimachinery/pkg/apis/meta/v1/validation"
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"k8s.io/apimachinery/pkg/runtime/schema"
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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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appsvalidation "k8s.io/kubernetes/pkg/apis/apps/validation"
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apivalidation "k8s.io/kubernetes/pkg/apis/core/validation"
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"k8s.io/kubernetes/pkg/apis/policy"
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)
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var supportedUnhealthyPodEvictionPolicies = sets.NewString(
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string(policy.IfHealthyBudget),
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string(policy.AlwaysAllow),
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)
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type PodDisruptionBudgetValidationOptions struct {
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AllowInvalidLabelValueInSelector bool
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}
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// ValidatePodDisruptionBudget validates a PodDisruptionBudget and returns an ErrorList
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// with any errors.
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func ValidatePodDisruptionBudget(pdb *policy.PodDisruptionBudget, opts PodDisruptionBudgetValidationOptions) field.ErrorList {
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allErrs := ValidatePodDisruptionBudgetSpec(pdb.Spec, opts, field.NewPath("spec"))
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return allErrs
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}
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// ValidatePodDisruptionBudgetSpec validates a PodDisruptionBudgetSpec and returns an ErrorList
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// with any errors.
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func ValidatePodDisruptionBudgetSpec(spec policy.PodDisruptionBudgetSpec, opts PodDisruptionBudgetValidationOptions, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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if spec.MinAvailable != nil && spec.MaxUnavailable != nil {
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allErrs = append(allErrs, field.Invalid(fldPath, spec, "minAvailable and maxUnavailable cannot be both set"))
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}
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if spec.MinAvailable != nil {
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allErrs = append(allErrs, appsvalidation.ValidatePositiveIntOrPercent(*spec.MinAvailable, fldPath.Child("minAvailable"))...)
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allErrs = append(allErrs, appsvalidation.IsNotMoreThan100Percent(*spec.MinAvailable, fldPath.Child("minAvailable"))...)
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}
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if spec.MaxUnavailable != nil {
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allErrs = append(allErrs, appsvalidation.ValidatePositiveIntOrPercent(*spec.MaxUnavailable, fldPath.Child("maxUnavailable"))...)
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allErrs = append(allErrs, appsvalidation.IsNotMoreThan100Percent(*spec.MaxUnavailable, fldPath.Child("maxUnavailable"))...)
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}
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labelSelectorValidationOptions := unversionedvalidation.LabelSelectorValidationOptions{AllowInvalidLabelValueInSelector: opts.AllowInvalidLabelValueInSelector}
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allErrs = append(allErrs, unversionedvalidation.ValidateLabelSelector(spec.Selector, labelSelectorValidationOptions, fldPath.Child("selector"))...)
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if spec.UnhealthyPodEvictionPolicy != nil && !supportedUnhealthyPodEvictionPolicies.Has(string(*spec.UnhealthyPodEvictionPolicy)) {
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allErrs = append(allErrs, field.NotSupported(fldPath.Child("unhealthyPodEvictionPolicy"), *spec.UnhealthyPodEvictionPolicy, supportedUnhealthyPodEvictionPolicies.List()))
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}
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return allErrs
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}
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// ValidatePodDisruptionBudgetStatusUpdate validates a PodDisruptionBudgetStatus and returns an ErrorList
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// with any errors.
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func ValidatePodDisruptionBudgetStatusUpdate(status, oldStatus policy.PodDisruptionBudgetStatus, fldPath *field.Path, apiVersion schema.GroupVersion) field.ErrorList {
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allErrs := field.ErrorList{}
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allErrs = append(allErrs, unversionedvalidation.ValidateConditions(status.Conditions, fldPath.Child("conditions"))...)
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// Don't run other validations for v1beta1 since we don't want to introduce
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// new validations retroactively.
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if apiVersion == policyapiv1beta1.SchemeGroupVersion {
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return allErrs
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}
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(status.DisruptionsAllowed), fldPath.Child("disruptionsAllowed"))...)
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(status.CurrentHealthy), fldPath.Child("currentHealthy"))...)
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(status.DesiredHealthy), fldPath.Child("desiredHealthy"))...)
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(status.ExpectedPods), fldPath.Child("expectedPods"))...)
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return allErrs
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}
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const sysctlPatternSegmentFmt string = "([a-z0-9][-_a-z0-9]*)?[a-z0-9*]"
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// SysctlContainSlashPatternFmt is a regex that contains a slash used for matching valid sysctl patterns.
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const SysctlContainSlashPatternFmt string = "(" + apivalidation.SysctlSegmentFmt + "[\\./])*" + sysctlPatternSegmentFmt
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var sysctlContainSlashPatternRegexp = regexp.MustCompile("^" + SysctlContainSlashPatternFmt + "$")
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// IsValidSysctlPattern checks if name is a valid sysctl pattern.
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// i.e. matches sysctlContainSlashPatternRegexp.
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// More info:
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//
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// https://man7.org/linux/man-pages/man8/sysctl.8.html
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// https://man7.org/linux/man-pages/man5/sysctl.d.5.html
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func IsValidSysctlPattern(name string) bool {
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if len(name) > apivalidation.SysctlMaxLength {
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return false
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}
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return sysctlContainSlashPatternRegexp.MatchString(name)
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}
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