mirror of https://github.com/k3s-io/k3s
99 lines
2.7 KiB
Go
99 lines
2.7 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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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 unversioned
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import (
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"encoding/json"
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"fmt"
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"strings"
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)
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// TODO: We need to remove the GroupVersion in types.go. We use the name GroupVersion here temporarily.
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// GroupVersion contains the "group" and the "version", which uniquely identifies the API.
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type GroupVersion struct {
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Group string
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Version string
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}
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// String puts "group" and "version" into a single "group/version" string. For the legacy v1
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// it returns "v1".
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func (gv *GroupVersion) String() string {
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// special case of "v1" for backward compatibility
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if gv.Group == "" && gv.Version == "v1" {
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return gv.Version
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} else {
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return gv.Group + "/" + gv.Version
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}
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}
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// ParseGroupVersion turns "group/version" string into a GroupVersion struct. It reports error
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// if it cannot parse the string.
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func ParseGroupVersion(gv string) (GroupVersion, error) {
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s := strings.Split(gv, "/")
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// "v1" is the only special case. Otherwise GroupVersion is expected to contain
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// one "/" dividing the string into two parts.
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switch {
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case len(s) == 1 && gv == "v1":
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return GroupVersion{"", "v1"}, nil
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case len(s) == 2:
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return GroupVersion{s[0], s[1]}, nil
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default:
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return GroupVersion{}, fmt.Errorf("Unexpected GroupVersion string: %v", gv)
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}
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}
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func ParseGroupVersionOrDie(gv string) GroupVersion {
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ret, err := ParseGroupVersion(gv)
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if err != nil {
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panic(err)
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}
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return ret
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}
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// MarshalJSON implements the json.Marshaller interface.
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func (gv GroupVersion) MarshalJSON() ([]byte, error) {
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s := gv.String()
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if strings.Count(s, "/") > 1 {
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return []byte{}, fmt.Errorf("illegal GroupVersion %v: contains more than one /", s)
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}
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return json.Marshal(s)
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}
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func (gv *GroupVersion) unmarshal(value []byte) error {
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var s string
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if err := json.Unmarshal(value, &s); err != nil {
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return err
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}
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parsed, err := ParseGroupVersion(s)
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if err != nil {
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return err
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}
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*gv = parsed
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return nil
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}
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// UnmarshalJSON implements the json.Unmarshaller interface.
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func (gv *GroupVersion) UnmarshalJSON(value []byte) error {
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return gv.unmarshal(value)
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}
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// UnmarshalTEXT implements the Ugorji's encoding.TextUnmarshaler interface.
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func (gv *GroupVersion) UnmarshalText(value []byte) error {
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return gv.unmarshal(value)
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}
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