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64 lines
3.0 KiB
Go
64 lines
3.0 KiB
Go
/*
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Copyright 2017 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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"fmt"
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"strings"
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apimachineryvalidation "k8s.io/apimachinery/pkg/api/validation"
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"k8s.io/apimachinery/pkg/util/validation/field"
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apivalidation "k8s.io/kubernetes/pkg/apis/core/validation"
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"k8s.io/kubernetes/pkg/apis/scheduling"
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schedulingapiv1 "k8s.io/kubernetes/pkg/apis/scheduling/v1"
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)
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// ValidatePriorityClass tests whether required fields in the PriorityClass are
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// set correctly.
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func ValidatePriorityClass(pc *scheduling.PriorityClass) field.ErrorList {
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allErrs := field.ErrorList{}
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allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&pc.ObjectMeta, false, apimachineryvalidation.NameIsDNSSubdomain, field.NewPath("metadata"))...)
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// If the priorityClass starts with a system prefix, it must be one of the
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// predefined system priority classes.
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if strings.HasPrefix(pc.Name, scheduling.SystemPriorityClassPrefix) {
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if is, err := schedulingapiv1.IsKnownSystemPriorityClass(pc.Name, pc.Value, pc.GlobalDefault); !is {
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allErrs = append(allErrs, field.Forbidden(field.NewPath("metadata", "name"), "priority class names with '"+scheduling.SystemPriorityClassPrefix+"' prefix are reserved for system use only. error: "+err.Error()))
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}
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} else if pc.Value > scheduling.HighestUserDefinablePriority {
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// Non-system critical priority classes are not allowed to have a value larger than HighestUserDefinablePriority.
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allErrs = append(allErrs, field.Forbidden(field.NewPath("value"), fmt.Sprintf("maximum allowed value of a user defined priority is %v", scheduling.HighestUserDefinablePriority)))
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}
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if pc.PreemptionPolicy != nil {
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allErrs = append(allErrs, apivalidation.ValidatePreemptionPolicy(pc.PreemptionPolicy, field.NewPath("preemptionPolicy"))...)
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}
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return allErrs
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}
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// ValidatePriorityClassUpdate tests if required fields in the PriorityClass are
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// set and are valid. PriorityClass does not allow updating name, value, and preemptionPolicy.
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func ValidatePriorityClassUpdate(pc, oldPc *scheduling.PriorityClass) field.ErrorList {
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// name is immutable and is checked by the ObjectMeta validator.
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allErrs := apivalidation.ValidateObjectMetaUpdate(&pc.ObjectMeta, &oldPc.ObjectMeta, field.NewPath("metadata"))
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// value is immutable.
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if pc.Value != oldPc.Value {
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allErrs = append(allErrs, field.Forbidden(field.NewPath("value"), "may not be changed in an update."))
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}
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// preemptionPolicy is immutable.
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allErrs = append(allErrs, apivalidation.ValidateImmutableField(pc.PreemptionPolicy, oldPc.PreemptionPolicy, field.NewPath("preemptionPolicy"))...)
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return allErrs
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}
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