133 lines
4.7 KiB
Go
133 lines
4.7 KiB
Go
/*
|
|
Copyright 2016 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 priorities
|
|
|
|
import (
|
|
v1 "k8s.io/api/core/v1"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/apimachinery/pkg/labels"
|
|
appslisters "k8s.io/client-go/listers/apps/v1"
|
|
corelisters "k8s.io/client-go/listers/core/v1"
|
|
schedulerlisters "k8s.io/kubernetes/pkg/scheduler/listers"
|
|
schedulernodeinfo "k8s.io/kubernetes/pkg/scheduler/nodeinfo"
|
|
)
|
|
|
|
// PriorityMetadataFactory is a factory to produce PriorityMetadata.
|
|
type PriorityMetadataFactory struct {
|
|
serviceLister corelisters.ServiceLister
|
|
controllerLister corelisters.ReplicationControllerLister
|
|
replicaSetLister appslisters.ReplicaSetLister
|
|
statefulSetLister appslisters.StatefulSetLister
|
|
}
|
|
|
|
// NewPriorityMetadataFactory creates a PriorityMetadataFactory.
|
|
func NewPriorityMetadataFactory(
|
|
serviceLister corelisters.ServiceLister,
|
|
controllerLister corelisters.ReplicationControllerLister,
|
|
replicaSetLister appslisters.ReplicaSetLister,
|
|
statefulSetLister appslisters.StatefulSetLister,
|
|
) PriorityMetadataProducer {
|
|
factory := &PriorityMetadataFactory{
|
|
serviceLister: serviceLister,
|
|
controllerLister: controllerLister,
|
|
replicaSetLister: replicaSetLister,
|
|
statefulSetLister: statefulSetLister,
|
|
}
|
|
return factory.PriorityMetadata
|
|
}
|
|
|
|
// priorityMetadata is a type that is passed as metadata for priority functions
|
|
type priorityMetadata struct {
|
|
podLimits *schedulernodeinfo.Resource
|
|
podTolerations []v1.Toleration
|
|
affinity *v1.Affinity
|
|
podSelectors []labels.Selector
|
|
controllerRef *metav1.OwnerReference
|
|
podFirstServiceSelector labels.Selector
|
|
totalNumNodes int
|
|
podTopologySpreadMap *podTopologySpreadMap
|
|
}
|
|
|
|
// PriorityMetadata is a PriorityMetadataProducer. Node info can be nil.
|
|
func (pmf *PriorityMetadataFactory) PriorityMetadata(pod *v1.Pod, filteredNodes []*v1.Node, sharedLister schedulerlisters.SharedLister) interface{} {
|
|
// If we cannot compute metadata, just return nil
|
|
if pod == nil {
|
|
return nil
|
|
}
|
|
totalNumNodes := 0
|
|
var allNodes []*schedulernodeinfo.NodeInfo
|
|
if sharedLister != nil {
|
|
if l, err := sharedLister.NodeInfos().List(); err == nil {
|
|
totalNumNodes = len(l)
|
|
allNodes = l
|
|
}
|
|
}
|
|
return &priorityMetadata{
|
|
podLimits: getResourceLimits(pod),
|
|
podTolerations: getAllTolerationPreferNoSchedule(pod.Spec.Tolerations),
|
|
affinity: pod.Spec.Affinity,
|
|
podSelectors: getSelectors(pod, pmf.serviceLister, pmf.controllerLister, pmf.replicaSetLister, pmf.statefulSetLister),
|
|
controllerRef: metav1.GetControllerOf(pod),
|
|
podFirstServiceSelector: getFirstServiceSelector(pod, pmf.serviceLister),
|
|
totalNumNodes: totalNumNodes,
|
|
podTopologySpreadMap: buildPodTopologySpreadMap(pod, filteredNodes, allNodes),
|
|
}
|
|
}
|
|
|
|
// getFirstServiceSelector returns one selector of services the given pod.
|
|
func getFirstServiceSelector(pod *v1.Pod, sl corelisters.ServiceLister) (firstServiceSelector labels.Selector) {
|
|
if services, err := sl.GetPodServices(pod); err == nil && len(services) > 0 {
|
|
return labels.SelectorFromSet(services[0].Spec.Selector)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// getSelectors returns selectors of services, RCs and RSs matching the given pod.
|
|
func getSelectors(pod *v1.Pod, sl corelisters.ServiceLister, cl corelisters.ReplicationControllerLister, rsl appslisters.ReplicaSetLister, ssl appslisters.StatefulSetLister) []labels.Selector {
|
|
var selectors []labels.Selector
|
|
|
|
if services, err := sl.GetPodServices(pod); err == nil {
|
|
for _, service := range services {
|
|
selectors = append(selectors, labels.SelectorFromSet(service.Spec.Selector))
|
|
}
|
|
}
|
|
|
|
if rcs, err := cl.GetPodControllers(pod); err == nil {
|
|
for _, rc := range rcs {
|
|
selectors = append(selectors, labels.SelectorFromSet(rc.Spec.Selector))
|
|
}
|
|
}
|
|
|
|
if rss, err := rsl.GetPodReplicaSets(pod); err == nil {
|
|
for _, rs := range rss {
|
|
if selector, err := metav1.LabelSelectorAsSelector(rs.Spec.Selector); err == nil {
|
|
selectors = append(selectors, selector)
|
|
}
|
|
}
|
|
}
|
|
|
|
if sss, err := ssl.GetPodStatefulSets(pod); err == nil {
|
|
for _, ss := range sss {
|
|
if selector, err := metav1.LabelSelectorAsSelector(ss.Spec.Selector); err == nil {
|
|
selectors = append(selectors, selector)
|
|
}
|
|
}
|
|
}
|
|
|
|
return selectors
|
|
}
|