47e52d2981
We have an existing helper function for this: runtime.SerializerInfoForMediaType() This is common prep-work for encoding runtime.Objects into JSON/YAML for transmission over the wire or writing to ComponentConfigs.
69 lines
2.1 KiB
Go
69 lines
2.1 KiB
Go
/*
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Copyright 2018 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 options
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import (
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"fmt"
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"io/ioutil"
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"os"
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"k8s.io/apimachinery/pkg/runtime"
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kubeschedulerconfig "k8s.io/kubernetes/pkg/scheduler/apis/config"
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kubeschedulerscheme "k8s.io/kubernetes/pkg/scheduler/apis/config/scheme"
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kubeschedulerconfigv1alpha1 "k8s.io/kubernetes/pkg/scheduler/apis/config/v1alpha1"
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)
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func loadConfigFromFile(file string) (*kubeschedulerconfig.KubeSchedulerConfiguration, error) {
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data, err := ioutil.ReadFile(file)
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if err != nil {
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return nil, err
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}
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return loadConfig(data)
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}
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func loadConfig(data []byte) (*kubeschedulerconfig.KubeSchedulerConfiguration, error) {
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configObj := &kubeschedulerconfig.KubeSchedulerConfiguration{}
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if err := runtime.DecodeInto(kubeschedulerscheme.Codecs.UniversalDecoder(), data, configObj); err != nil {
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return nil, err
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}
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return configObj, nil
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}
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// WriteConfigFile writes the config into the given file name as YAML.
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func WriteConfigFile(fileName string, cfg *kubeschedulerconfig.KubeSchedulerConfiguration) error {
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const mediaType = runtime.ContentTypeYAML
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info, ok := runtime.SerializerInfoForMediaType(kubeschedulerscheme.Codecs.SupportedMediaTypes(), mediaType)
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if !ok {
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return fmt.Errorf("unable to locate encoder -- %q is not a supported media type", mediaType)
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}
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encoder := kubeschedulerscheme.Codecs.EncoderForVersion(info.Serializer, kubeschedulerconfigv1alpha1.SchemeGroupVersion)
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configFile, err := os.Create(fileName)
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if err != nil {
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return err
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}
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defer configFile.Close()
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if err := encoder.Encode(cfg, configFile); err != nil {
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return err
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}
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return nil
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}
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