89 lines
2.3 KiB
Go
89 lines
2.3 KiB
Go
/*
|
|
Copyright 2014 The Kubernetes Authors.
|
|
|
|
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 rest
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"net/http"
|
|
"path"
|
|
|
|
"k8s.io/client-go/1.5/pkg/api/unversioned"
|
|
)
|
|
|
|
const (
|
|
legacyAPIPath = "/api"
|
|
defaultAPIPath = "/apis"
|
|
)
|
|
|
|
// TODO: Is this obsoleted by the discovery client?
|
|
|
|
// ServerAPIVersions returns the GroupVersions supported by the API server.
|
|
// It creates a RESTClient based on the passed in config, but it doesn't rely
|
|
// on the Version and Codec of the config, because it uses AbsPath and
|
|
// takes the raw response.
|
|
func ServerAPIVersions(c *Config) (groupVersions []string, err error) {
|
|
transport, err := TransportFor(c)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
client := http.Client{Transport: transport}
|
|
|
|
configCopy := *c
|
|
configCopy.GroupVersion = nil
|
|
configCopy.APIPath = ""
|
|
baseURL, _, err := defaultServerUrlFor(&configCopy)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
// Get the groupVersions exposed at /api
|
|
originalPath := baseURL.Path
|
|
baseURL.Path = path.Join(originalPath, legacyAPIPath)
|
|
resp, err := client.Get(baseURL.String())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
var v unversioned.APIVersions
|
|
defer resp.Body.Close()
|
|
err = json.NewDecoder(resp.Body).Decode(&v)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("unexpected error: %v", err)
|
|
}
|
|
|
|
groupVersions = append(groupVersions, v.Versions...)
|
|
// Get the groupVersions exposed at /apis
|
|
baseURL.Path = path.Join(originalPath, defaultAPIPath)
|
|
resp2, err := client.Get(baseURL.String())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
var apiGroupList unversioned.APIGroupList
|
|
defer resp2.Body.Close()
|
|
err = json.NewDecoder(resp2.Body).Decode(&apiGroupList)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("unexpected error: %v", err)
|
|
}
|
|
|
|
for _, g := range apiGroupList.Groups {
|
|
for _, gv := range g.Versions {
|
|
groupVersions = append(groupVersions, gv.GroupVersion)
|
|
}
|
|
}
|
|
|
|
return groupVersions, nil
|
|
}
|