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util.go
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/*
Copyright 2018 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package scheduler
import (
"fmt"
"io/ioutil"
"strings"
yaml "gopkg.in/yaml.v2"
"volcano.sh/volcano/pkg/scheduler/conf"
"volcano.sh/volcano/pkg/scheduler/framework"
"volcano.sh/volcano/pkg/scheduler/plugins"
)
var defaultSchedulerConf = `
actions: "enqueue, allocate, backfill"
tiers:
- plugins:
- name: priority
- name: gang
- plugins:
- name: drf
- name: predicates
- name: proportion
- name: nodeorder
`
func loadSchedulerConf(confStr string) ([]framework.Action, []conf.Tier, []conf.Configuration, error) {
var actions []framework.Action
schedulerConf := &conf.SchedulerConfiguration{}
buf := make([]byte, len(confStr))
copy(buf, confStr)
if err := yaml.Unmarshal(buf, schedulerConf); err != nil {
return nil, nil, nil, err
}
// Set default settings for each plugin if not set
for i, tier := range schedulerConf.Tiers {
for j := range tier.Plugins {
plugins.ApplyPluginConfDefaults(&schedulerConf.Tiers[i].Plugins[j])
}
}
actionNames := strings.Split(schedulerConf.Actions, ",")
for _, actionName := range actionNames {
if action, found := framework.GetAction(strings.TrimSpace(actionName)); found {
actions = append(actions, action)
} else {
return nil, nil, nil, fmt.Errorf("failed to found Action %s, ignore it", actionName)
}
}
return actions, schedulerConf.Tiers, schedulerConf.Configurations, nil
}
func readSchedulerConf(confPath string) (string, error) {
dat, err := ioutil.ReadFile(confPath)
if err != nil {
return "", err
}
return string(dat), nil
}