mirror of https://github.com/k3s-io/k3s
72 lines
2.3 KiB
Go
72 lines
2.3 KiB
Go
/*
|
|
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 options
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"os"
|
|
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
kubeschedulerconfig "k8s.io/kubernetes/pkg/scheduler/apis/config"
|
|
kubeschedulerscheme "k8s.io/kubernetes/pkg/scheduler/apis/config/scheme"
|
|
kubeschedulerconfigv1beta1 "k8s.io/kubernetes/pkg/scheduler/apis/config/v1beta1"
|
|
)
|
|
|
|
func loadConfigFromFile(file string) (*kubeschedulerconfig.KubeSchedulerConfiguration, error) {
|
|
data, err := ioutil.ReadFile(file)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return loadConfig(data)
|
|
}
|
|
|
|
func loadConfig(data []byte) (*kubeschedulerconfig.KubeSchedulerConfiguration, error) {
|
|
// The UniversalDecoder runs defaulting and returns the internal type by default.
|
|
obj, gvk, err := kubeschedulerscheme.Codecs.UniversalDecoder().Decode(data, nil, nil)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if cfgObj, ok := obj.(*kubeschedulerconfig.KubeSchedulerConfiguration); ok {
|
|
return cfgObj, nil
|
|
}
|
|
return nil, fmt.Errorf("couldn't decode as KubeSchedulerConfiguration, got %s: ", gvk)
|
|
}
|
|
|
|
// WriteConfigFile writes the config into the given file name as YAML.
|
|
func WriteConfigFile(fileName string, cfg *kubeschedulerconfig.KubeSchedulerConfiguration) error {
|
|
const mediaType = runtime.ContentTypeYAML
|
|
info, ok := runtime.SerializerInfoForMediaType(kubeschedulerscheme.Codecs.SupportedMediaTypes(), mediaType)
|
|
if !ok {
|
|
return fmt.Errorf("unable to locate encoder -- %q is not a supported media type", mediaType)
|
|
}
|
|
|
|
encoder := kubeschedulerscheme.Codecs.EncoderForVersion(info.Serializer, kubeschedulerconfigv1beta1.SchemeGroupVersion)
|
|
|
|
configFile, err := os.Create(fileName)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer configFile.Close()
|
|
if err := encoder.Encode(cfg, configFile); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|