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client.go
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client.go
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package k8s
import (
"io"
"github.com/nii236/kk/pkg/kk"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/clientcmd"
appsv1 "k8s.io/api/apps/v1beta1"
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
// RealClientSet contains an embedded Kubernetes client set
type RealClientSet struct {
clientset *kubernetes.Clientset
}
// New returns a new clientset
func New(flags *k.ParsedFlags) (*RealClientSet, error) {
// Use the current context in kubeconfig
cc, err := clientcmd.BuildConfigFromFlags("", flags.KubeConfigPath)
if err != nil {
return nil, err
}
// Create the client set
clientSet, err := kubernetes.NewForConfig(cc)
if err != nil {
return nil, err
}
return &RealClientSet{
clientSet,
}, nil
}
// Get pods (use namespace)
func (cs *RealClientSet) GetPods(namespace string) (*v1.PodList, error) {
return cs.clientset.CoreV1().Pods(namespace).List(metav1.ListOptions{})
}
// Get pods (use namespace)
func (cs *RealClientSet) GetDeployments(namespace string) (*appsv1.DeploymentList, error) {
return cs.clientset.AppsV1beta1().Deployments(namespace).List(metav1.ListOptions{})
}
// Get namespaces
func (cs *RealClientSet) GetNamespaces() (*v1.NamespaceList, error) {
return cs.clientset.CoreV1().Namespaces().List(metav1.ListOptions{})
}
// Get the pod containers
func (cs *RealClientSet) GetPodContainers(podName string, namespace string) ([]string, error) {
var pc []string
pod, err := cs.clientset.CoreV1().Pods(namespace).Get(podName, metav1.GetOptions{})
if err != nil {
return nil, err
}
for _, c := range pod.Spec.Containers {
pc = append(pc, c.Name)
}
return pc, nil
}
// Delete pod
func (cs *RealClientSet) DeletePod(podName string, namespace string) error {
return cs.clientset.CoreV1().Pods(namespace).Delete(podName, &metav1.DeleteOptions{})
}
// Get pod container logs
func (cs *RealClientSet) GetPodContainerLogs(podName string, containerName string, namespace string, o io.Writer) error {
tl := int64(50)
opts := &v1.PodLogOptions{
Container: containerName,
TailLines: &tl,
}
req := cs.clientset.CoreV1().Pods(namespace).GetLogs(podName, opts)
readCloser, err := req.Stream()
if err != nil {
return err
}
_, err = io.Copy(o, readCloser)
readCloser.Close()
return err
}