mirror of https://github.com/kubernetes/kops.git
94 lines
3.0 KiB
Go
94 lines
3.0 KiB
Go
/*
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Copyright 2016 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 kopscodecs
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import (
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"bytes"
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"fmt"
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"github.com/golang/glog"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/runtime/serializer"
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"k8s.io/kops/pkg/apis/kops"
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"k8s.io/kops/pkg/apis/kops/install"
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"k8s.io/kops/pkg/apis/kops/v1alpha2"
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)
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var Scheme = runtime.NewScheme()
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var Codecs = serializer.NewCodecFactory(Scheme)
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var ParameterCodec = runtime.NewParameterCodec(Scheme)
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func init() {
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metav1.AddToGroupVersion(Scheme, schema.GroupVersion{Version: "v1"})
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install.Install(Scheme)
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}
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func encoder(gv runtime.GroupVersioner, mediaType string) runtime.Encoder {
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e, ok := runtime.SerializerInfoForMediaType(Codecs.SupportedMediaTypes(), mediaType)
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if !ok {
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glog.Fatalf("no %s serializer registered", mediaType)
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}
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return Codecs.EncoderForVersion(e.Serializer, gv)
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}
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func decoder() runtime.Decoder {
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// TODO: Cache?
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// Codecs provides access to encoding and decoding for the scheme
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codec := Codecs.UniversalDecoder(kops.SchemeGroupVersion)
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return codec
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}
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// ToVersionedYaml encodes the object to YAML
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func ToVersionedYaml(obj runtime.Object) ([]byte, error) {
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return ToVersionedYamlWithVersion(obj, v1alpha2.SchemeGroupVersion)
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}
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// ToVersionedYamlWithVersion encodes the object to YAML, in a specified API version
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func ToVersionedYamlWithVersion(obj runtime.Object, version runtime.GroupVersioner) ([]byte, error) {
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var w bytes.Buffer
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err := encoder(version, "application/yaml").Encode(obj, &w)
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if err != nil {
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return nil, fmt.Errorf("error encoding %T: %v", obj, err)
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}
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return w.Bytes(), nil
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}
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// ToVersionedJSON encodes the object to JSON
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func ToVersionedJSON(obj runtime.Object) ([]byte, error) {
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return ToVersionedJSONWithVersion(obj, v1alpha2.SchemeGroupVersion)
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}
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// ToVersionedJSONWithVersion encodes the object to JSON, in a specified API version
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func ToVersionedJSONWithVersion(obj runtime.Object, version runtime.GroupVersioner) ([]byte, error) {
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var w bytes.Buffer
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err := encoder(version, "application/json").Encode(obj, &w)
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if err != nil {
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return nil, fmt.Errorf("error encoding %T: %v", obj, err)
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}
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return w.Bytes(), nil
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}
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// Decode decodes the specified data, with the specified default version
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func Decode(data []byte, defaultReadVersion *schema.GroupVersionKind) (runtime.Object, *schema.GroupVersionKind, error) {
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decoder := decoder()
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object, gvk, err := decoder.Decode(data, defaultReadVersion, nil)
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return object, gvk, err
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}
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