mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-10-31 05:40:42 +00:00
68 lines
2.5 KiB
Go
68 lines
2.5 KiB
Go
/*
|
|
Copyright 2019 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 v1
|
|
|
|
import (
|
|
"fmt"
|
|
"k8s.io/api/scheduling/v1"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/kubernetes/pkg/apis/scheduling"
|
|
)
|
|
|
|
// SystemPriorityClasses define system priority classes that are auto-created at cluster bootstrapping.
|
|
// Our API validation logic ensures that any priority class that has a system prefix or its value
|
|
// is higher than HighestUserDefinablePriority is equal to one of these SystemPriorityClasses.
|
|
var systemPriorityClasses = []*v1.PriorityClass{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: scheduling.SystemNodeCritical,
|
|
},
|
|
Value: scheduling.SystemCriticalPriority + 1000,
|
|
Description: "Used for system critical pods that must not be moved from their current node.",
|
|
},
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: scheduling.SystemClusterCritical,
|
|
},
|
|
Value: scheduling.SystemCriticalPriority,
|
|
Description: "Used for system critical pods that must run in the cluster, but can be moved to another node if necessary.",
|
|
},
|
|
}
|
|
|
|
// SystemPriorityClasses returns the list of system priority classes.
|
|
// NOTE: be careful not to modify any of elements of the returned array directly.
|
|
func SystemPriorityClasses() []*v1.PriorityClass {
|
|
return systemPriorityClasses
|
|
}
|
|
|
|
// IsKnownSystemPriorityClass returns true if there's any of the system priority classes exactly
|
|
// matches "name", "value", "globalDefault". otherwise it will return an error.
|
|
func IsKnownSystemPriorityClass(name string, value int32, globalDefault bool) (bool, error) {
|
|
for _, spc := range SystemPriorityClasses() {
|
|
if spc.Name == name {
|
|
if spc.Value != value {
|
|
return false, fmt.Errorf("value of %v PriorityClass must be %v", spc.Name, spc.Value)
|
|
}
|
|
if spc.GlobalDefault != globalDefault {
|
|
return false, fmt.Errorf("globalDefault of %v PriorityClass must be %v", spc.Name, spc.GlobalDefault)
|
|
}
|
|
return true, nil
|
|
}
|
|
}
|
|
return false, fmt.Errorf("%v is not a known system priority class", name)
|
|
}
|