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client.go
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client.go
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// Copyright 2023 The Okteto 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.
package kubeconfig
import (
"log"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd"
clientcmdapi "k8s.io/client-go/tools/clientcmd/api"
)
// InCluster returns true if Okteto is running on a Kubernetes cluster
func InCluster() bool {
_, err := rest.InClusterConfig()
return err == nil
}
// Create creates a new kubeconfig file
func Create() *clientcmdapi.Config {
return clientcmdapi.NewConfig()
}
// Get retrieves a kubeconfig file
func Get(kubeconfigPaths []string) *clientcmdapi.Config {
loadingRules := clientcmd.ClientConfigLoadingRules{
Precedence: kubeconfigPaths,
}
mergedConfig, err := loadingRules.Load()
if err != nil {
log.Fatalf("error accessing your KUBECONFIG file '%v': %v", kubeconfigPaths, err)
}
return mergedConfig
}
// Write stores a kubeconfig file
func Write(cfg *clientcmdapi.Config, kubeconfigPath string) error {
return clientcmd.WriteToFile(*cfg, kubeconfigPath)
}
// CurrentContext returns the name of the current context
func CurrentContext(kubeconfigPath []string) string {
cfg := Get(kubeconfigPath)
if cfg == nil {
return ""
}
return cfg.CurrentContext
}
// CurrentNamespace returns the name of the namespace in use by a given context
func CurrentNamespace(kubeconfigPath []string) string {
cfg := Get(kubeconfigPath)
if cfg == nil {
return ""
}
if currentContext, ok := cfg.Contexts[cfg.CurrentContext]; ok {
return currentContext.Namespace
}
return "default"
}