mirror of
https://github.com/kubernetes-sigs/descheduler.git
synced 2026-01-26 13:29:11 +01:00
78 lines
2.1 KiB
Go
78 lines
2.1 KiB
Go
/*
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Copyright 2017 The Kubernetes 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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"fmt"
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clientset "k8s.io/client-go/kubernetes"
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componentbaseconfig "k8s.io/component-base/config"
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// Ensure to load all auth plugins.
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_ "k8s.io/client-go/plugin/pkg/client/auth"
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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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func CreateClient(clientConnection componentbaseconfig.ClientConnectionConfiguration, userAgt string) (clientset.Interface, error) {
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var cfg *rest.Config
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if len(clientConnection.Kubeconfig) != 0 {
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master, err := GetMasterFromKubeconfig(clientConnection.Kubeconfig)
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if err != nil {
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return nil, fmt.Errorf("failed to parse kubeconfig file: %v ", err)
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}
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cfg, err = clientcmd.BuildConfigFromFlags(master, clientConnection.Kubeconfig)
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if err != nil {
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return nil, fmt.Errorf("unable to build config: %v", err)
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}
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} else {
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var err error
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cfg, err = rest.InClusterConfig()
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if err != nil {
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return nil, fmt.Errorf("unable to build in cluster config: %v", err)
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}
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}
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cfg.Burst = int(clientConnection.Burst)
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cfg.QPS = clientConnection.QPS
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if len(userAgt) != 0 {
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cfg = rest.AddUserAgent(cfg, userAgt)
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}
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return clientset.NewForConfig(cfg)
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}
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func GetMasterFromKubeconfig(filename string) (string, error) {
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config, err := clientcmd.LoadFromFile(filename)
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if err != nil {
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return "", err
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}
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context, ok := config.Contexts[config.CurrentContext]
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if !ok {
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return "", fmt.Errorf("failed to get master address from kubeconfig")
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}
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if val, ok := config.Clusters[context.Cluster]; ok {
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return val.Server, nil
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}
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return "", fmt.Errorf("failed to get master address from kubeconfig")
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}
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