1fe7ce21bc
This moves the priority types from the algorithm package to priorities package. Idea is to move the type to the packages where it is implemented. This will ease the future refactor process.
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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"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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nonZeroRequest *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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nonZeroRequest: getNonZeroRequests(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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