39 lines
1.1 KiB
Go
39 lines
1.1 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 random
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import (
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"math/rand"
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"k8s.io/autoscaler/cluster-autoscaler/expander"
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"k8s.io/kubernetes/plugin/pkg/scheduler/schedulercache"
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)
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type random struct {
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}
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// NewStrategy returns an expansion strategy that randomly picks between node groups
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func NewStrategy() expander.Strategy {
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return &random{}
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}
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// RandomExpansion Selects from the expansion options at random
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func (r *random) BestOption(expansionOptions []expander.Option, nodeInfo map[string]*schedulercache.NodeInfo) *expander.Option {
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pos := rand.Int31n(int32(len(expansionOptions)))
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return &expansionOptions[pos]
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}
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