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kube.go
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kube.go
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// Copyright 2020 Fairwinds
//
// 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 helm
import (
"fmt"
"os"
"sync"
"k8s.io/client-go/kubernetes"
// This is required to auth to cloud providers (i.e. GKE)
_ "k8s.io/client-go/plugin/pkg/client/auth"
"sigs.k8s.io/controller-runtime/pkg/client/config"
)
type kube struct {
Client kubernetes.Interface
}
var kubeClient *kube
var once sync.Once
// GetConfigInstance returns a Kubernetes interface based on the current configuration
func getConfigInstance() *kube {
once.Do(func() {
if kubeClient == nil {
kubeClient = &kube{
Client: getKubeClient(),
}
}
})
return kubeClient
}
func getKubeClient() kubernetes.Interface {
kubeConf, err := config.GetConfig()
if err != nil {
fmt.Println("Error getting kubeconfig:", err)
os.Exit(1)
}
clientset, err := kubernetes.NewForConfig(kubeConf)
if err != nil {
fmt.Println("Error creating kubernetes client:", err)
os.Exit(1)
}
return clientset
}