73 lines
2.3 KiB
Go
73 lines
2.3 KiB
Go
/*
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Copyright 2017 the Velero contributors.
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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 encode
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import (
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"bytes"
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"fmt"
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"io"
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"github.com/pkg/errors"
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"k8s.io/apimachinery/pkg/runtime"
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v1 "github.com/vmware-tanzu/velero/pkg/apis/velero/v1"
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"github.com/vmware-tanzu/velero/pkg/generated/clientset/versioned/scheme"
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)
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// Encode converts the provided object to the specified format
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// and returns a byte slice of the encoded data.
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func Encode(obj runtime.Object, format string) ([]byte, error) {
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buf := new(bytes.Buffer)
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if err := EncodeTo(obj, format, buf); err != nil {
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return nil, err
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}
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return buf.Bytes(), nil
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}
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// EncodeTo converts the provided object to the specified format and
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// writes the encoded data to the provided io.Writer.
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func EncodeTo(obj runtime.Object, format string, w io.Writer) error {
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encoder, err := EncoderFor(format, obj)
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if err != nil {
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return err
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}
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return errors.WithStack(encoder.Encode(obj, w))
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}
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// EncoderFor gets the appropriate encoder for the specified format.
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// Only objects registered in the velero scheme, or objects with their TypeMeta set will have valid encoders.
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func EncoderFor(format string, obj runtime.Object) (runtime.Encoder, error) {
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var encoder runtime.Encoder
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desiredMediaType := fmt.Sprintf("application/%s", format)
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serializerInfo, found := runtime.SerializerInfoForMediaType(scheme.Codecs.SupportedMediaTypes(), desiredMediaType)
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if !found {
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return nil, errors.Errorf("unable to locate an encoder for %q", desiredMediaType)
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}
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if serializerInfo.PrettySerializer != nil {
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encoder = serializerInfo.PrettySerializer
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} else {
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encoder = serializerInfo.Serializer
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}
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if !obj.GetObjectKind().GroupVersionKind().Empty() {
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return encoder, nil
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}
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encoder = scheme.Codecs.EncoderForVersion(encoder, v1.SchemeGroupVersion)
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return encoder, nil
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}
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