mirror of https://github.com/k3s-io/k3s
65 lines
1.6 KiB
Go
65 lines
1.6 KiB
Go
/*
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Copyright 2017 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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"k8s.io/kubernetes/pkg/scheduler/algorithm"
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schedulerapi "k8s.io/kubernetes/pkg/scheduler/api"
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schedulernodeinfo "k8s.io/kubernetes/pkg/scheduler/nodeinfo"
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)
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// NormalizeReduce generates a PriorityReduceFunction that can normalize the result
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// scores to [0, maxPriority]. If reverse is set to true, it reverses the scores by
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// subtracting it from maxPriority.
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func NormalizeReduce(maxPriority int, reverse bool) algorithm.PriorityReduceFunction {
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return func(
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_ *v1.Pod,
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_ interface{},
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_ map[string]*schedulernodeinfo.NodeInfo,
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result schedulerapi.HostPriorityList) error {
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var maxCount int
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for i := range result {
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if result[i].Score > maxCount {
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maxCount = result[i].Score
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}
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}
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if maxCount == 0 {
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if reverse {
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for i := range result {
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result[i].Score = maxPriority
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}
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}
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return nil
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}
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for i := range result {
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score := result[i].Score
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score = maxPriority * score / maxCount
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if reverse {
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score = maxPriority - score
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}
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result[i].Score = score
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}
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return nil
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}
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}
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