mirror of https://github.com/k3s-io/k3s
44 lines
1.2 KiB
Go
44 lines
1.2 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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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 scheduler
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import (
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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)
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// RoundRobinScheduler chooses machines in order.
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type RoundRobinScheduler struct {
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currentIndex int
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}
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func NewRoundRobinScheduler() Scheduler {
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return &RoundRobinScheduler{
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currentIndex: -1,
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}
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}
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// Schedule schedules a pod on the machine next to the last scheduled machine.
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func (s *RoundRobinScheduler) Schedule(pod api.Pod, minionLister MinionLister) (string, error) {
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machines, err := minionLister.List()
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if err != nil {
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return "", err
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}
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s.currentIndex = (s.currentIndex + 1) % len(machines)
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result := machines[s.currentIndex]
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return result, nil
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}
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