mirror of https://github.com/k3s-io/k3s
74 lines
2.2 KiB
Go
74 lines
2.2 KiB
Go
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/*
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Copyright 2017 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 podtolerationrestriction
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import (
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"fmt"
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"io"
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"io/ioutil"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/serializer"
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internalapi "k8s.io/kubernetes/plugin/pkg/admission/podtolerationrestriction/apis/podtolerationrestriction"
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"k8s.io/kubernetes/plugin/pkg/admission/podtolerationrestriction/apis/podtolerationrestriction/install"
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versionedapi "k8s.io/kubernetes/plugin/pkg/admission/podtolerationrestriction/apis/podtolerationrestriction/v1alpha1"
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"k8s.io/kubernetes/plugin/pkg/admission/podtolerationrestriction/apis/podtolerationrestriction/validation"
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)
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var (
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scheme = runtime.NewScheme()
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codecs = serializer.NewCodecFactory(scheme)
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)
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func init() {
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install.Install(scheme)
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}
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// LoadConfiguration loads the provided configuration.
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func loadConfiguration(config io.Reader) (*internalapi.Configuration, error) {
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// if no config is provided, return a default configuration
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if config == nil {
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externalConfig := &versionedapi.Configuration{}
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scheme.Default(externalConfig)
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internalConfig := &internalapi.Configuration{}
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if err := scheme.Convert(externalConfig, internalConfig, nil); err != nil {
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return nil, err
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}
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return internalConfig, nil
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}
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// we have a config so parse it.
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data, err := ioutil.ReadAll(config)
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if err != nil {
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return nil, err
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}
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decoder := codecs.UniversalDecoder()
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decodedObj, err := runtime.Decode(decoder, data)
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if err != nil {
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return nil, err
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}
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externalConfig, ok := decodedObj.(*internalapi.Configuration)
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if !ok {
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return nil, fmt.Errorf("unexpected type: %T", decodedObj)
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}
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if err := validation.ValidateConfiguration(externalConfig); err != nil {
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return nil, err
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}
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return externalConfig, nil
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}
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