/
filecontentinlinecodec.go
90 lines (76 loc) · 3.1 KB
/
filecontentinlinecodec.go
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// Copyright (c) 2019 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 controlplane
import (
"github.com/gardener/gardener/extensions/pkg/controller/operatingsystemconfig/oscommon/cloudinit"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
"github.com/pkg/errors"
)
// FileContentInlineCodec contains methods for encoding and decoding byte slices
// to and from *extensionsv1alpha1.FileContentInline.
type FileContentInlineCodec interface {
// Encode encodes the given byte slice into a *extensionsv1alpha1.FileContentInline.
Encode([]byte, string) (*extensionsv1alpha1.FileContentInline, error)
// Decode decodes a byte slice from the given *extensionsv1alpha1.FileContentInline.
Decode(*extensionsv1alpha1.FileContentInline) ([]byte, error)
}
// NewFileContentInlineCodec creates an returns a new FileContentInlineCodec.
func NewFileContentInlineCodec() FileContentInlineCodec {
return &fileContentInlineCodec{}
}
type fileContentInlineCodec struct{}
// Encode encodes the given byte slice into a *extensionsv1alpha1.FileContentInline.
func (c *fileContentInlineCodec) Encode(data []byte, encoding string) (*extensionsv1alpha1.FileContentInline, error) {
// Initialize file codec
fileCodec, err := getFileCodec(encoding)
if err != nil {
return nil, err
}
// Encode data using the file codec, if needed
if fileCodec != nil {
if data, err = fileCodec.Encode(data); err != nil {
return nil, errors.Wrap(err, "could not encode data using file codec")
}
}
return &extensionsv1alpha1.FileContentInline{
Encoding: encoding,
Data: string(data),
}, nil
}
// Decode decodes a byte slice from the given *extensionsv1alpha1.FileContentInline.
func (c *fileContentInlineCodec) Decode(fci *extensionsv1alpha1.FileContentInline) ([]byte, error) {
data := []byte(fci.Data)
// Initialize file codec
fileCodec, err := getFileCodec(fci.Encoding)
if err != nil {
return nil, err
}
// Decode data using the file codec, if needed
if fileCodec != nil {
if data, err = fileCodec.Decode(data); err != nil {
return nil, errors.Wrap(err, "could not decode data using file codec")
}
}
return data, nil
}
func getFileCodec(encoding string) (cloudinit.FileCodec, error) {
if encoding == "" {
return nil, nil
}
fileCodecID, err := cloudinit.ParseFileCodecID(encoding)
if err != nil {
return nil, errors.Wrapf(err, "could not parse file codec ID '%s'", encoding)
}
return cloudinit.FileCodecForID(fileCodecID), nil
}