47 lines
1.3 KiB
Go
47 lines
1.3 KiB
Go
/*
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Copyright 2021 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 factory
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import (
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"k8s.io/autoscaler/cluster-autoscaler/expander"
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schedulerframework "k8s.io/kubernetes/pkg/scheduler/framework"
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)
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type chainStrategy struct {
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filters []expander.Filter
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fallback expander.Strategy
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}
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func newChainStrategy(filters []expander.Filter, fallback expander.Strategy) expander.Strategy {
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return &chainStrategy{
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filters: filters,
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fallback: fallback,
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}
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}
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func (c *chainStrategy) BestOption(options []expander.Option, nodeInfo map[string]*schedulerframework.NodeInfo) *expander.Option {
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filteredOptions := options
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for _, filter := range c.filters {
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filteredOptions = filter.BestOptions(filteredOptions, nodeInfo)
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if len(filteredOptions) == 1 {
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return &filteredOptions[0]
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}
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}
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return c.fallback.BestOption(filteredOptions, nodeInfo)
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}
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