mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-11-03 23:40:03 +00:00
6b3a6e6b98
Instead of saying "Google Inc." (which is not always correct) say "The Kubernetes Authors", which is generic.
112 lines
2.8 KiB
Go
112 lines
2.8 KiB
Go
/*
|
|
Copyright 2014 The Kubernetes Authors All rights reserved.
|
|
|
|
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 gcp_credentials
|
|
|
|
import (
|
|
"io/ioutil"
|
|
"time"
|
|
|
|
"github.com/GoogleCloudPlatform/kubernetes/pkg/credentialprovider"
|
|
"github.com/golang/glog"
|
|
"golang.org/x/oauth2"
|
|
"golang.org/x/oauth2/google"
|
|
"golang.org/x/oauth2/jwt"
|
|
|
|
"github.com/spf13/pflag"
|
|
)
|
|
|
|
const (
|
|
storageReadOnlyScope = "https://www.googleapis.com/auth/devstorage.read_only"
|
|
)
|
|
|
|
var (
|
|
flagJwtFile = pflag.String("google-json-key", "",
|
|
"The Google Cloud Platform Service Account JSON Key to use for authentication.")
|
|
)
|
|
|
|
// A DockerConfigProvider that reads its configuration from Google
|
|
// Compute Engine metadata.
|
|
type jwtProvider struct {
|
|
path *string
|
|
config *jwt.Config
|
|
tokenUrl string
|
|
}
|
|
|
|
// init registers the various means by which credentials may
|
|
// be resolved on GCP.
|
|
func init() {
|
|
credentialprovider.RegisterCredentialProvider("google-jwt-key",
|
|
&credentialprovider.CachingDockerConfigProvider{
|
|
Provider: &jwtProvider{
|
|
path: flagJwtFile,
|
|
},
|
|
Lifetime: 30 * time.Minute,
|
|
})
|
|
}
|
|
|
|
// Enabled implements DockerConfigProvider for the JSON Key based implementation.
|
|
func (j *jwtProvider) Enabled() bool {
|
|
if *j.path == "" {
|
|
return false
|
|
}
|
|
|
|
data, err := ioutil.ReadFile(*j.path)
|
|
if err != nil {
|
|
glog.Errorf("while reading file %s got %v", *j.path, err)
|
|
return false
|
|
}
|
|
config, err := google.JWTConfigFromJSON(data, storageReadOnlyScope)
|
|
if err != nil {
|
|
glog.Errorf("while parsing %s data got %v", *j.path, err)
|
|
return false
|
|
}
|
|
|
|
j.config = config
|
|
if j.tokenUrl != "" {
|
|
j.config.TokenURL = j.tokenUrl
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Provide implements DockerConfigProvider
|
|
func (j *jwtProvider) Provide() credentialprovider.DockerConfig {
|
|
cfg := credentialprovider.DockerConfig{}
|
|
|
|
ts := j.config.TokenSource(oauth2.NoContext)
|
|
token, err := ts.Token()
|
|
if err != nil {
|
|
glog.Errorf("while exchanging json key %s for access token %v", *j.path, err)
|
|
return cfg
|
|
}
|
|
if !token.Valid() {
|
|
glog.Errorf("Got back invalid token: %v", token)
|
|
return cfg
|
|
}
|
|
|
|
entry := credentialprovider.DockerConfigEntry{
|
|
Username: "_token",
|
|
Password: token.AccessToken,
|
|
Email: j.config.Email,
|
|
}
|
|
|
|
// Add our entry for each of the supported container registry URLs
|
|
for _, k := range containerRegistryUrls {
|
|
cfg[k] = entry
|
|
}
|
|
return cfg
|
|
}
|