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config.go
57 lines (46 loc) · 1.45 KB
/
config.go
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// SPDX-FileCopyrightText: 2024 SAP SE or an SAP affiliate company and Gardener contributors
//
// SPDX-License-Identifier: Apache-2.0
package dnsrewriting
import (
"fmt"
"io"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/serializer"
"github.com/gardener/gardener/plugin/pkg/shoot/dnsrewriting/apis/shootdnsrewriting"
"github.com/gardener/gardener/plugin/pkg/shoot/dnsrewriting/apis/shootdnsrewriting/install"
"github.com/gardener/gardener/plugin/pkg/shoot/dnsrewriting/apis/shootdnsrewriting/v1alpha1"
)
var (
scheme = runtime.NewScheme()
codecs = serializer.NewCodecFactory(scheme)
)
func init() {
install.Install(scheme)
}
// LoadConfiguration loads the provided configuration.
func LoadConfiguration(config io.Reader) (*shootdnsrewriting.Configuration, error) {
// if no config is provided, return a default Configuration
if config == nil {
externalConfig := &v1alpha1.Configuration{}
scheme.Default(externalConfig)
internalConfig := &shootdnsrewriting.Configuration{}
if err := scheme.Convert(externalConfig, internalConfig, nil); err != nil {
return nil, err
}
return internalConfig, nil
}
data, err := io.ReadAll(config)
if err != nil {
return nil, err
}
decodedObj, err := runtime.Decode(codecs.UniversalDecoder(), data)
if err != nil {
return nil, err
}
cfg, ok := decodedObj.(*shootdnsrewriting.Configuration)
if !ok {
return nil, fmt.Errorf("unexpected type: %T", decodedObj)
}
return cfg, nil
}