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kube_proxy_configcodec.go
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kube_proxy_configcodec.go
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// Copyright (c) 2021 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 shoot
import (
"fmt"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/runtime/serializer"
"k8s.io/apimachinery/pkg/runtime/serializer/json"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
kubeproxyconfigv1alpha1 "k8s.io/kube-proxy/config/v1alpha1"
)
// KubeProxyConfigCodec contains methods for encoding and decoding *kubeproxyconfigv1alpha1.KubeProxyConfiguration objects
// to and from string.
type KubeProxyConfigCodec interface {
// Encode encodes the given *kubeproxyconfigv1alpha1.KubeProxyConfiguration into a string.
Encode(*kubeproxyconfigv1alpha1.KubeProxyConfiguration) (string, error)
// Decode decodes a *kubeproxyconfigv1alpha1.KubeProxyConfiguration from the given string.
Decode(string) (*kubeproxyconfigv1alpha1.KubeProxyConfiguration, error)
}
var (
scheme *runtime.Scheme
configCodec KubeProxyConfigCodec
)
func init() {
scheme = runtime.NewScheme()
utilruntime.Must(kubeproxyconfigv1alpha1.AddToScheme(scheme))
configCodec = NewKubeProxyConfigCodec()
}
// NewKubeProxyConfigCodec creates an returns a new KubeProxyConfigCodec.
func NewKubeProxyConfigCodec() KubeProxyConfigCodec {
ser := json.NewSerializerWithOptions(json.DefaultMetaFactory, scheme, scheme, json.SerializerOptions{Yaml: true, Pretty: false, Strict: false})
versions := schema.GroupVersions([]schema.GroupVersion{kubeproxyconfigv1alpha1.SchemeGroupVersion})
codec := serializer.NewCodecFactory(scheme).CodecForVersions(ser, ser, versions, versions)
return &kubeProxyConfigCodec{
codec: codec,
}
}
type kubeProxyConfigCodec struct {
codec runtime.Codec
}
// Encode encodes the given *kubeproxyconfigv1alpha1.KubeProxyConfiguration into a string.
func (c *kubeProxyConfigCodec) Encode(kubeProxyConfig *kubeproxyconfigv1alpha1.KubeProxyConfiguration) (string, error) {
data, err := runtime.Encode(c.codec, kubeProxyConfig)
if err != nil {
return "", fmt.Errorf("could not encode kube-proxy configuration to YAML: %w", err)
}
return string(data), nil
}
// Decode decodes a *kubeproxyconfigv1alpha1.KubeProxyConfiguration from the given string.
func (c *kubeProxyConfigCodec) Decode(data string) (*kubeproxyconfigv1alpha1.KubeProxyConfiguration, error) {
kubeProxyConfig := &kubeproxyconfigv1alpha1.KubeProxyConfiguration{}
if err := runtime.DecodeInto(c.codec, []byte(data), kubeProxyConfig); err != nil {
return nil, fmt.Errorf("could not decode kube-proxy configuration from YAML: %w", err)
}
return kubeProxyConfig, nil
}