mirror of https://github.com/dapr/cli.git
120 lines
3.0 KiB
Go
120 lines
3.0 KiB
Go
/*
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Copyright 2021 The Dapr 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 kubernetes
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import (
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"flag"
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"fmt"
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"os"
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"path/filepath"
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"runtime"
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"strings"
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"sync"
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k8s "k8s.io/client-go/kubernetes"
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scheme "github.com/dapr/dapr/pkg/client/clientset/versioned"
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// azure auth
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_ "k8s.io/client-go/plugin/pkg/client/auth/azure"
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// gcp auth
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_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
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// oidc auth
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_ "k8s.io/client-go/plugin/pkg/client/auth/oidc"
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// openstack auth
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_ "k8s.io/client-go/plugin/pkg/client/auth/openstack"
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"k8s.io/client-go/rest"
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"k8s.io/client-go/tools/clientcmd"
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)
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var (
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doOnce sync.Once
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kubeconfig *string
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)
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func init() {
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if home := homeDir(); home != "" {
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kubeconfig = flag.String("kubeconfig", filepath.Join(home, ".kube", "config"), "(optional) absolute path to the kubeconfig file")
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} else {
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kubeconfig = flag.String("kubeconfig", "", "absolute path to the kubeconfig file")
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}
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}
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func getConfig() (*rest.Config, error) {
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doOnce.Do(func() {
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flag.Parse()
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})
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kubeConfigEnv := os.Getenv("KUBECONFIG")
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kubeConfigDelimiter := ":"
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if runtime.GOOS == "windows" {
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kubeConfigDelimiter = ";"
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}
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delimiterBelongsToPath := strings.Count(*kubeconfig, kubeConfigDelimiter) == 1 && strings.EqualFold(*kubeconfig, kubeConfigEnv)
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if len(kubeConfigEnv) != 0 && !delimiterBelongsToPath {
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kubeConfigs := strings.Split(kubeConfigEnv, kubeConfigDelimiter)
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if len(kubeConfigs) > 1 {
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return nil, fmt.Errorf("multiple kubeconfigs in KUBECONFIG environment variable - %s", kubeConfigEnv)
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}
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kubeconfig = &kubeConfigs[0]
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}
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config, err := clientcmd.BuildConfigFromFlags("", *kubeconfig)
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if err != nil {
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return nil, err
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}
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return config, nil
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}
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// GetKubeConfigClient returns the kubeconfig and the client created from the kubeconfig.
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func GetKubeConfigClient() (*rest.Config, *k8s.Clientset, error) {
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config, err := getConfig()
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if err != nil {
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return nil, nil, err
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}
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client, err := k8s.NewForConfig(config)
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if err != nil {
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return config, nil, err
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}
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return config, client, nil
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}
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// Client returns a new Kubernetes client.
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func Client() (*k8s.Clientset, error) {
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config, err := getConfig()
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if err != nil {
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return nil, err
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}
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return k8s.NewForConfig(config)
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}
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// DaprClient returns a new Kubernetes Dapr client.
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func DaprClient() (scheme.Interface, error) {
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config, err := getConfig()
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if err != nil {
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return nil, err
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}
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return scheme.NewForConfig(config)
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}
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func homeDir() string {
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if h := os.Getenv("HOME"); h != "" {
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return h
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}
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return os.Getenv("USERPROFILE") // windows.
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}
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