b2be584e5b
* Add topologyScopeName parameter to NewManager(). * Add scope interface and structure that implement common logic * Add pod scope & container scopes * Add pod lifecycle functions Co-authored-by: sw.han <sw.han@samsung.com> Signed-off-by: Krzysztof Wiatrzyk <k.wiatrzyk@samsung.com>
92 lines
2.7 KiB
Go
92 lines
2.7 KiB
Go
/*
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Copyright 2020 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 topologymanager
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import (
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"k8s.io/api/core/v1"
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"k8s.io/klog/v2"
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"k8s.io/kubernetes/pkg/kubelet/lifecycle"
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"k8s.io/kubernetes/pkg/kubelet/util/format"
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)
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type podScope struct {
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scope
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}
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// Ensure podScope implements Scope interface
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var _ Scope = &podScope{}
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// NewPodScope returns a pod scope.
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func NewPodScope(policy Policy) Scope {
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return &podScope{
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scope{
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name: podTopologyScope,
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podTopologyHints: podTopologyHints{},
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policy: policy,
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podMap: make(map[string]string),
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},
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}
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}
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func (s *podScope) Admit(pod *v1.Pod) lifecycle.PodAdmitResult {
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// Exception - Policy : none
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if s.policy.Name() == PolicyNone {
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return s.admitPolicyNone(pod)
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}
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bestHint, admit := s.calculateAffinity(pod)
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klog.Infof("[topologymanager] Best TopologyHint for (pod: %v): %v", format.Pod(pod), bestHint)
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if !admit {
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return topologyAffinityError()
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}
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for _, container := range append(pod.Spec.InitContainers, pod.Spec.Containers...) {
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klog.Infof("[topologymanager] Topology Affinity for (pod: %v container: %v): %v", format.Pod(pod), container.Name, bestHint)
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if (s.podTopologyHints)[string(pod.UID)] == nil {
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(s.podTopologyHints)[string(pod.UID)] = make(map[string]TopologyHint)
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}
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(s.podTopologyHints)[string(pod.UID)][container.Name] = bestHint
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err := s.allocateAlignedResources(pod, &container)
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if err != nil {
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return unexpectedAdmissionError(err)
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}
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}
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return admitPod()
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}
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func (s *podScope) accumulateProvidersHints(pod *v1.Pod) []map[string][]TopologyHint {
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var providersHints []map[string][]TopologyHint
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for _, provider := range s.hintProviders {
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// Get the TopologyHints for a Pod from a provider.
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hints := provider.GetPodTopologyHints(pod)
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providersHints = append(providersHints, hints)
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klog.Infof("[topologymanager] TopologyHints for pod '%v': %v", format.Pod(pod), hints)
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}
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return providersHints
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}
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func (s *podScope) calculateAffinity(pod *v1.Pod) (TopologyHint, bool) {
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providersHints := s.accumulateProvidersHints(pod)
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bestHint, admit := s.policy.Merge(providersHints)
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klog.Infof("[topologymanager] PodTopologyHint: %v", bestHint)
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return bestHint, admit
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}
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