mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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116 lines
4.2 KiB
Go
116 lines
4.2 KiB
Go
/*
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Copyright 2016 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 priorities
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import (
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v1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/kubernetes/pkg/scheduler/algorithm"
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schedulernodeinfo "k8s.io/kubernetes/pkg/scheduler/nodeinfo"
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)
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// PriorityMetadataFactory is a factory to produce PriorityMetadata.
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type PriorityMetadataFactory struct {
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serviceLister algorithm.ServiceLister
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controllerLister algorithm.ControllerLister
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replicaSetLister algorithm.ReplicaSetLister
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statefulSetLister algorithm.StatefulSetLister
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}
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// NewPriorityMetadataFactory creates a PriorityMetadataFactory.
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func NewPriorityMetadataFactory(serviceLister algorithm.ServiceLister, controllerLister algorithm.ControllerLister, replicaSetLister algorithm.ReplicaSetLister, statefulSetLister algorithm.StatefulSetLister) PriorityMetadataProducer {
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factory := &PriorityMetadataFactory{
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serviceLister: serviceLister,
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controllerLister: controllerLister,
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replicaSetLister: replicaSetLister,
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statefulSetLister: statefulSetLister,
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}
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return factory.PriorityMetadata
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}
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// priorityMetadata is a type that is passed as metadata for priority functions
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type priorityMetadata struct {
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podLimits *schedulernodeinfo.Resource
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podTolerations []v1.Toleration
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affinity *v1.Affinity
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podSelectors []labels.Selector
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controllerRef *metav1.OwnerReference
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podFirstServiceSelector labels.Selector
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totalNumNodes int
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}
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// PriorityMetadata is a PriorityMetadataProducer. Node info can be nil.
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func (pmf *PriorityMetadataFactory) PriorityMetadata(pod *v1.Pod, nodeNameToInfo map[string]*schedulernodeinfo.NodeInfo) interface{} {
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// If we cannot compute metadata, just return nil
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if pod == nil {
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return nil
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}
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return &priorityMetadata{
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podLimits: getResourceLimits(pod),
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podTolerations: getAllTolerationPreferNoSchedule(pod.Spec.Tolerations),
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affinity: pod.Spec.Affinity,
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podSelectors: getSelectors(pod, pmf.serviceLister, pmf.controllerLister, pmf.replicaSetLister, pmf.statefulSetLister),
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controllerRef: metav1.GetControllerOf(pod),
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podFirstServiceSelector: getFirstServiceSelector(pod, pmf.serviceLister),
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totalNumNodes: len(nodeNameToInfo),
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}
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}
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// getFirstServiceSelector returns one selector of services the given pod.
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func getFirstServiceSelector(pod *v1.Pod, sl algorithm.ServiceLister) (firstServiceSelector labels.Selector) {
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if services, err := sl.GetPodServices(pod); err == nil && len(services) > 0 {
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return labels.SelectorFromSet(services[0].Spec.Selector)
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}
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return nil
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}
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// getSelectors returns selectors of services, RCs and RSs matching the given pod.
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func getSelectors(pod *v1.Pod, sl algorithm.ServiceLister, cl algorithm.ControllerLister, rsl algorithm.ReplicaSetLister, ssl algorithm.StatefulSetLister) []labels.Selector {
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var selectors []labels.Selector
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if services, err := sl.GetPodServices(pod); err == nil {
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for _, service := range services {
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selectors = append(selectors, labels.SelectorFromSet(service.Spec.Selector))
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}
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}
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if rcs, err := cl.GetPodControllers(pod); err == nil {
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for _, rc := range rcs {
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selectors = append(selectors, labels.SelectorFromSet(rc.Spec.Selector))
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}
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}
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if rss, err := rsl.GetPodReplicaSets(pod); err == nil {
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for _, rs := range rss {
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if selector, err := metav1.LabelSelectorAsSelector(rs.Spec.Selector); err == nil {
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selectors = append(selectors, selector)
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}
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}
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}
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if sss, err := ssl.GetPodStatefulSets(pod); err == nil {
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for _, ss := range sss {
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if selector, err := metav1.LabelSelectorAsSelector(ss.Spec.Selector); err == nil {
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selectors = append(selectors, selector)
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}
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}
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}
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return selectors
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}
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