| /* |
| Copyright 2017 The Kubernetes Authors. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| package validation |
| |
| import ( |
| "fmt" |
| "strings" |
| |
| apimachineryvalidation "k8s.io/apimachinery/pkg/api/validation" |
| "k8s.io/apimachinery/pkg/util/validation/field" |
| apivalidation "k8s.io/kubernetes/pkg/apis/core/validation" |
| "k8s.io/kubernetes/pkg/apis/scheduling" |
| ) |
| |
| // ValidatePriorityClass tests whether required fields in the PriorityClass are |
| // set correctly. |
| func ValidatePriorityClass(pc *scheduling.PriorityClass) field.ErrorList { |
| allErrs := field.ErrorList{} |
| allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&pc.ObjectMeta, false, apimachineryvalidation.NameIsDNSSubdomain, field.NewPath("metadata"))...) |
| // If the priorityClass starts with a system prefix, it must be one of the |
| // predefined system priority classes. |
| if strings.HasPrefix(pc.Name, scheduling.SystemPriorityClassPrefix) { |
| if is, err := scheduling.IsKnownSystemPriorityClass(pc); !is { |
| 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())) |
| } |
| } else if pc.Value > scheduling.HighestUserDefinablePriority { |
| // Non-system critical priority classes are not allowed to have a value larger than HighestUserDefinablePriority. |
| allErrs = append(allErrs, field.Forbidden(field.NewPath("value"), fmt.Sprintf("maximum allowed value of a user defined priority is %v", scheduling.HighestUserDefinablePriority))) |
| } |
| return allErrs |
| } |
| |
| // ValidatePriorityClassUpdate tests if required fields in the PriorityClass are |
| // set and are valid. PriorityClass does not allow updating Name, and Value. |
| func ValidatePriorityClassUpdate(pc, oldPc *scheduling.PriorityClass) field.ErrorList { |
| allErrs := apivalidation.ValidateObjectMetaUpdate(&pc.ObjectMeta, &oldPc.ObjectMeta, field.NewPath("metadata")) |
| // Name is immutable and is checked by the ObjectMeta validator. |
| if pc.Value != oldPc.Value { |
| allErrs = append(allErrs, field.Forbidden(field.NewPath("Value"), "may not be changed in an update.")) |
| } |
| return allErrs |
| } |