| /* |
| 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 scheduling |
| |
| import ( |
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| "k8s.io/kubernetes/pkg/apis/core" |
| ) |
| |
| const ( |
| // DefaultPriorityWhenNoDefaultClassExists is used to set priority of pods |
| // that do not specify any priority class and there is no priority class |
| // marked as default. |
| DefaultPriorityWhenNoDefaultClassExists = 0 |
| // HighestUserDefinablePriority is the highest priority for user defined priority classes. Priority values larger than 1 billion are reserved for Kubernetes system use. |
| HighestUserDefinablePriority = int32(1000000000) |
| // SystemCriticalPriority is the beginning of the range of priority values for critical system components. |
| SystemCriticalPriority = 2 * HighestUserDefinablePriority |
| // SystemPriorityClassPrefix is the prefix reserved for system priority class names. Other priority |
| // classes are not allowed to start with this prefix. |
| // NOTE: In order to avoid conflict of names with user-defined priority classes, all the names must |
| // start with SystemPriorityClassPrefix. |
| SystemPriorityClassPrefix = "system-" |
| // SystemClusterCritical is the system priority class name that represents cluster-critical. |
| SystemClusterCritical = SystemPriorityClassPrefix + "cluster-critical" |
| // SystemNodeCritical is the system priority class name that represents node-critical. |
| SystemNodeCritical = SystemPriorityClassPrefix + "node-critical" |
| ) |
| |
| // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object |
| |
| // PriorityClass defines the mapping from a priority class name to the priority |
| // integer value. The value can be any valid integer. |
| type PriorityClass struct { |
| metav1.TypeMeta |
| // Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata. |
| // +optional |
| metav1.ObjectMeta |
| |
| // The value of this priority class. This is the actual priority that pods |
| // receive when they have the name of this class in their pod spec. |
| Value int32 |
| |
| // globalDefault specifies whether this PriorityClass should be considered as |
| // the default priority for pods that do not have any priority class. |
| // Only one PriorityClass can be marked as `globalDefault`. However, if more than |
| // one PriorityClasses exists with their `globalDefault` field set to true, |
| // the smallest value of such global default PriorityClasses will be used as the default priority. |
| // +optional |
| GlobalDefault bool |
| |
| // Description is an arbitrary string that usually provides guidelines on |
| // when this priority class should be used. |
| // +optional |
| Description string |
| |
| // PreemptionPolicy it the Policy for preempting pods with lower priority. |
| // This field is alpha-level and is only honored by servers that enable the NonPreemptingPriority feature. |
| // +optional |
| PreemptionPolicy *core.PreemptionPolicy |
| } |
| |
| // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object |
| |
| // PriorityClassList is a collection of priority classes. |
| type PriorityClassList struct { |
| metav1.TypeMeta |
| // Standard list metadata. |
| // More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#types-kinds |
| // +optional |
| metav1.ListMeta |
| |
| // Items is the list of PriorityClasses. |
| Items []PriorityClass |
| } |