mirror of
https://github.com/kubernetes-sigs/node-feature-discovery.git
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acf815fb10
This change is part of an effort to remove the pkg/apihelper package. GetKubeconfig is useful helper functionality shared accross the codebase so move it into a "safe" location.
56 lines
1.6 KiB
Go
56 lines
1.6 KiB
Go
/*
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Copyright 2022 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 utils
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import (
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"os"
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"strings"
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restclient "k8s.io/client-go/rest"
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"k8s.io/client-go/tools/clientcmd"
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)
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var nodeName string
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// NodeName returns the name of the k8s node we're running on.
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func NodeName() string {
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if nodeName == "" {
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nodeName = os.Getenv("NODE_NAME")
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}
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return nodeName
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}
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// GetKubernetesNamespace returns the kubernetes namespace we're running under,
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// or an empty string if the namespace cannot be determined.
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func GetKubernetesNamespace() string {
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const kubernetesNamespaceFilePath = "/var/run/secrets/kubernetes.io/serviceaccount/namespace"
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if _, err := os.Stat(kubernetesNamespaceFilePath); err == nil {
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data, err := os.ReadFile(kubernetesNamespaceFilePath)
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if err == nil {
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return strings.TrimSpace(string(data))
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}
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}
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return os.Getenv("KUBERNETES_NAMESPACE")
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}
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// GetKubeconfig returns the kubeconfig for the cluster
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func GetKubeconfig(path string) (*restclient.Config, error) {
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if path == "" {
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return restclient.InClusterConfig()
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}
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return clientcmd.BuildConfigFromFlags("", path)
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}
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