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127 lines
4.1 KiB
Go
127 lines
4.1 KiB
Go
/*
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Copyright 2019 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 v1
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import (
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/types"
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)
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const (
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// MinExtenderPriority defines the min priority value for extender.
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MinExtenderPriority int64 = 0
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// MaxExtenderPriority defines the max priority value for extender.
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MaxExtenderPriority int64 = 10
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)
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// ExtenderPreemptionResult represents the result returned by preemption phase of extender.
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type ExtenderPreemptionResult struct {
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NodeNameToMetaVictims map[string]*MetaVictims
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}
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// ExtenderPreemptionArgs represents the arguments needed by the extender to preempt pods on nodes.
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type ExtenderPreemptionArgs struct {
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// Pod being scheduled
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Pod *v1.Pod
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// Victims map generated by scheduler preemption phase
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// Only set NodeNameToMetaVictims if ExtenderConfig.NodeCacheCapable == true. Otherwise, only set NodeNameToVictims.
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NodeNameToVictims map[string]*Victims
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NodeNameToMetaVictims map[string]*MetaVictims
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}
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// Victims represents:
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// pods: a group of pods expected to be preempted.
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// numPDBViolations: the count of violations of PodDisruptionBudget
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type Victims struct {
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Pods []*v1.Pod
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NumPDBViolations int64
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}
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// MetaPod represent identifier for a v1.Pod
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type MetaPod struct {
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UID string
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}
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// MetaVictims represents:
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// pods: a group of pods expected to be preempted.
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// Only Pod identifiers will be sent and user are expect to get v1.Pod in their own way.
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// numPDBViolations: the count of violations of PodDisruptionBudget
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type MetaVictims struct {
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Pods []*MetaPod
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NumPDBViolations int64
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}
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// ExtenderArgs represents the arguments needed by the extender to filter/prioritize
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// nodes for a pod.
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type ExtenderArgs struct {
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// Pod being scheduled
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Pod *v1.Pod
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// List of candidate nodes where the pod can be scheduled; to be populated
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// only if ExtenderConfig.NodeCacheCapable == false
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Nodes *v1.NodeList
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// List of candidate node names where the pod can be scheduled; to be
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// populated only if ExtenderConfig.NodeCacheCapable == true
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NodeNames *[]string
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}
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// FailedNodesMap represents the filtered out nodes, with node names and failure messages
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type FailedNodesMap map[string]string
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// ExtenderFilterResult represents the results of a filter call to an extender
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type ExtenderFilterResult struct {
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// Filtered set of nodes where the pod can be scheduled; to be populated
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// only if ExtenderConfig.NodeCacheCapable == false
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Nodes *v1.NodeList
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// Filtered set of nodes where the pod can be scheduled; to be populated
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// only if ExtenderConfig.NodeCacheCapable == true
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NodeNames *[]string
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// Filtered out nodes where the pod can't be scheduled and the failure messages
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FailedNodes FailedNodesMap
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// Error message indicating failure
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Error string
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}
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// ExtenderBindingArgs represents the arguments to an extender for binding a pod to a node.
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type ExtenderBindingArgs struct {
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// PodName is the name of the pod being bound
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PodName string
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// PodNamespace is the namespace of the pod being bound
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PodNamespace string
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// PodUID is the UID of the pod being bound
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PodUID types.UID
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// Node selected by the scheduler
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Node string
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}
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// ExtenderBindingResult represents the result of binding of a pod to a node from an extender.
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type ExtenderBindingResult struct {
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// Error message indicating failure
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Error string
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}
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// HostPriority represents the priority of scheduling to a particular host, higher priority is better.
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type HostPriority struct {
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// Name of the host
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Host string
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// Score associated with the host
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Score int64
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}
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// HostPriorityList declares a []HostPriority type.
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type HostPriorityList []HostPriority
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