mirror of
https://gitea.com/Lydanne/buildx.git
synced 2025-10-31 16:13:45 +08:00
126 lines
3.7 KiB
Go
126 lines
3.7 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 auth defines a file format for holding authentication
|
|
information needed by clients of Kubernetes. Typically,
|
|
a Kubernetes cluster will put auth info for the admin in a known
|
|
location when it is created, and will (soon) put it in a known
|
|
location within a Container's file tree for Containers that
|
|
need access to the Kubernetes API.
|
|
|
|
Having a defined format allows:
|
|
- clients to be implemented in multiple languages
|
|
- applications which link clients to be portable across
|
|
clusters with different authentication styles (e.g.
|
|
some may use SSL Client certs, others may not, etc)
|
|
- when the format changes, applications only
|
|
need to update this code.
|
|
|
|
The file format is json, marshalled from a struct authcfg.Info.
|
|
|
|
Clinet libraries in other languages should use the same format.
|
|
|
|
It is not intended to store general preferences, such as default
|
|
namespace, output options, etc. CLIs (such as kubectl) and UIs should
|
|
develop their own format and may wish to inline the authcfg.Info type.
|
|
|
|
The authcfg.Info is just a file format. It is distinct from
|
|
client.Config which holds options for creating a client.Client.
|
|
Helper functions are provided in this package to fill in a
|
|
client.Client from an authcfg.Info.
|
|
|
|
Example:
|
|
|
|
import (
|
|
"pkg/client"
|
|
"pkg/client/auth"
|
|
)
|
|
|
|
info, err := auth.LoadFromFile(filename)
|
|
if err != nil {
|
|
// handle error
|
|
}
|
|
clientConfig = client.Config{}
|
|
clientConfig.Host = "example.com:4901"
|
|
clientConfig = info.MergeWithConfig()
|
|
client := client.New(clientConfig)
|
|
client.Pods(ns).List()
|
|
*/
|
|
package auth
|
|
|
|
// TODO: need a way to rotate Tokens. Therefore, need a way for client object to be reset when the authcfg is updated.
|
|
import (
|
|
"encoding/json"
|
|
"io/ioutil"
|
|
"os"
|
|
|
|
restclient "k8s.io/client-go/rest"
|
|
)
|
|
|
|
// Info holds Kubernetes API authorization config. It is intended
|
|
// to be read/written from a file as a JSON object.
|
|
type Info struct {
|
|
User string
|
|
Password string
|
|
CAFile string
|
|
CertFile string
|
|
KeyFile string
|
|
BearerToken string
|
|
Insecure *bool
|
|
}
|
|
|
|
// LoadFromFile parses an Info object from a file path.
|
|
// If the file does not exist, then os.IsNotExist(err) == true
|
|
func LoadFromFile(path string) (*Info, error) {
|
|
var info Info
|
|
if _, err := os.Stat(path); os.IsNotExist(err) {
|
|
return nil, err
|
|
}
|
|
data, err := ioutil.ReadFile(path)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
err = json.Unmarshal(data, &info)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &info, err
|
|
}
|
|
|
|
// MergeWithConfig returns a copy of a client.Config with values from the Info.
|
|
// The fields of client.Config with a corresponding field in the Info are set
|
|
// with the value from the Info.
|
|
func (info Info) MergeWithConfig(c restclient.Config) (restclient.Config, error) {
|
|
var config restclient.Config = c
|
|
config.Username = info.User
|
|
config.Password = info.Password
|
|
config.CAFile = info.CAFile
|
|
config.CertFile = info.CertFile
|
|
config.KeyFile = info.KeyFile
|
|
config.BearerToken = info.BearerToken
|
|
if info.Insecure != nil {
|
|
config.Insecure = *info.Insecure
|
|
}
|
|
return config, nil
|
|
}
|
|
|
|
func (info Info) Complete() bool {
|
|
return len(info.User) > 0 ||
|
|
len(info.CertFile) > 0 ||
|
|
len(info.BearerToken) > 0
|
|
}
|