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kubeconfig.go
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kubeconfig.go
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/*
* Copyright 2018- The Pixie 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.
*
* SPDX-License-Identifier: Apache-2.0
*/
package gke
import (
"bytes"
"text/template"
)
const kubeconfigTempl = `
apiVersion: v1
kind: Config
preferences: {}
clusters:
- cluster:
certificate-authority-data: {{.ClusterCA}}
server: {{.Endpoint}}
name: {{.ClusterName}}
contexts:
- context:
cluster: {{.ClusterName}}
user: {{.ClusterName}}
name: {{.ClusterName}}
current-context: {{.ClusterName}}
users:
- name: {{.ClusterName}}
user:
exec:
apiVersion: client.authentication.k8s.io/v1beta1
command: gke-gcloud-auth-plugin
args:
- --use_application_default_credentials
installHint: Install gke-gcloud-auth-plugin for use with kubectl by following
https://cloud.google.com/blog/products/containers-kubernetes/kubectl-auth-changes-in-gke
provideClusterInfo: true
`
func fillKubeconfigTemplate(name string, ca string, endpoint string) ([]byte, error) {
t, err := template.New("").Parse(kubeconfigTempl)
if err != nil {
return nil, err
}
var buf bytes.Buffer
err = t.Execute(&buf, &struct {
ClusterName string
ClusterCA string
Endpoint string
}{
ClusterName: name,
ClusterCA: ca,
Endpoint: endpoint,
})
if err != nil {
return nil, err
}
return buf.Bytes(), nil
}