92 lines
1.8 KiB
Go
92 lines
1.8 KiB
Go
/*
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Copyright 2019 The KubeSphere Authors.
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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 client
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import (
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"flag"
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"fmt"
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"log"
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"os"
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"sync"
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"k8s.io/client-go/tools/clientcmd"
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"github.com/mitchellh/go-homedir"
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"k8s.io/client-go/kubernetes"
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"k8s.io/client-go/rest"
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)
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var (
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kubeConfigFile string
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k8sClient *kubernetes.Clientset
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k8sClientOnce sync.Once
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KubeConfig *rest.Config
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)
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func init() {
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flag.StringVar(&kubeConfigFile, "kubeconfig", fmt.Sprintf("%s/.kube/config", os.Getenv("HOME")), "path to kubeconfig file")
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}
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func K8sClient() *kubernetes.Clientset {
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k8sClientOnce.Do(func() {
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config, err := getKubeConfig()
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if err != nil {
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log.Fatalln(err)
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}
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k8sClient = kubernetes.NewForConfigOrDie(config)
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KubeConfig = config
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})
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return k8sClient
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}
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func getKubeConfig() (kubeConfig *rest.Config, err error) {
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if kubeConfigFile == "" {
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if env := os.Getenv("KUBECONFIG"); env != "" {
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kubeConfigFile = env
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} else {
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if home, err := homedir.Dir(); err == nil {
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kubeConfigFile = fmt.Sprintf("%s/.kube/config", home)
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}
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}
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}
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if _, err = os.Stat(kubeConfigFile); err == nil {
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kubeConfig, err = clientcmd.BuildConfigFromFlags("", kubeConfigFile)
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} else {
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kubeConfig, err = rest.InClusterConfig()
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}
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if err != nil {
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return nil, err
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}
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kubeConfig.QPS = 1e6
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kubeConfig.Burst = 1e6
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return kubeConfig, nil
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}
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