mirror of
https://github.com/kubernetes-sigs/node-feature-discovery.git
synced 2024-12-14 11:57:51 +00:00
120 lines
3.5 KiB
Go
120 lines
3.5 KiB
Go
/*
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Copyright 2019 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 apihelper
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import (
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"context"
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"encoding/json"
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topologyclientset "github.com/k8stopologyawareschedwg/noderesourcetopology-api/pkg/generated/clientset/versioned"
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corev1 "k8s.io/api/core/v1"
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meta_v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/types"
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k8sclient "k8s.io/client-go/kubernetes"
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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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// K8sHelpers implements APIHelpers
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type K8sHelpers struct {
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Kubeconfig *restclient.Config
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}
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// GetClient creates and returns a new clientset from given config
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func (h K8sHelpers) GetClient() (*k8sclient.Clientset, error) {
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clientset, err := k8sclient.NewForConfig(h.Kubeconfig)
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if err != nil {
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return nil, err
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}
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return clientset, nil
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}
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func (h K8sHelpers) GetTopologyClient() (*topologyclientset.Clientset, error) {
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topologyClient, err := topologyclientset.NewForConfig(h.Kubeconfig)
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if err != nil {
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return nil, err
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}
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return topologyClient, nil
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}
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// GetNode retrieves one node object.
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func (h K8sHelpers) GetNode(cli *k8sclient.Clientset, nodeName string) (*corev1.Node, error) {
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// Get the node object using node name
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node, err := cli.CoreV1().Nodes().Get(context.TODO(), nodeName, meta_v1.GetOptions{})
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if err != nil {
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return nil, err
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}
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return node, nil
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}
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// GetNodes retrieves all the node objects.
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func (h K8sHelpers) GetNodes(cli *k8sclient.Clientset) (*corev1.NodeList, error) {
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return cli.CoreV1().Nodes().List(context.TODO(), meta_v1.ListOptions{})
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}
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// UpdateNode sends updated node object to the apiserver
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func (h K8sHelpers) UpdateNode(c *k8sclient.Clientset, n *corev1.Node) error {
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// Send the updated node to the apiserver.
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_, err := c.CoreV1().Nodes().Update(context.TODO(), n, meta_v1.UpdateOptions{})
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if err != nil {
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return err
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}
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return nil
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}
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func (h K8sHelpers) PatchNode(c *k8sclient.Clientset, nodeName string, patches []JsonPatch) error {
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if len(patches) > 0 {
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data, err := json.Marshal(patches)
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if err == nil {
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_, err = c.CoreV1().Nodes().Patch(context.TODO(), nodeName, types.JSONPatchType, data, meta_v1.PatchOptions{})
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}
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return err
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}
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return nil
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}
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func (h K8sHelpers) PatchNodeStatus(c *k8sclient.Clientset, nodeName string, patches []JsonPatch) error {
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if len(patches) > 0 {
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data, err := json.Marshal(patches)
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if err == nil {
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_, err = c.CoreV1().Nodes().Patch(context.TODO(), nodeName, types.JSONPatchType, data, meta_v1.PatchOptions{}, "status")
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}
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return err
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}
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return nil
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}
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func (h K8sHelpers) GetPod(cli *k8sclient.Clientset, namespace string, podName string) (*corev1.Pod, error) {
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// Get the node object using pod name
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pod, err := cli.CoreV1().Pods(namespace).Get(context.TODO(), podName, meta_v1.GetOptions{})
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if err != nil {
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return nil, err
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}
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return pod, nil
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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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