105 lines
2.7 KiB
Go
105 lines
2.7 KiB
Go
package internal
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import (
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"context"
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"fmt"
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log "github.com/sirupsen/logrus"
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v1 "k8s.io/api/coordination/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/kubernetes"
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"k8s.io/client-go/rest"
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)
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func generateClient() (kubernetes.Interface, error) {
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log.WithFields(log.Fields{
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"Caller": "generateClient",
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}).Info("Generating k8s client")
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config, err := rest.InClusterConfig()
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if err != nil {
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return nil, fmt.Errorf("Could not generate in cluster config: %s", err.Error())
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}
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clientset, err := kubernetes.NewForConfig(config)
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if err != nil {
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return nil, fmt.Errorf("Could not generate clientset: %s", err.Error())
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}
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return clientset, nil
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}
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func LabelNode(nodeName string, leaseName string, cfg *Config) error {
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client, err := generateClient()
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if err != nil {
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return fmt.Errorf("Could not generate client: %s", err.Error())
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}
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return ApplyLabelToNode(client, nodeName, leaseName, cfg)
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}
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func ApplyLabelToNode(client kubernetes.Interface, nodeName string, leaseName string, cfg *Config) error {
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log.WithFields(log.Fields{
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"Caller": "ApplyLabelToNode",
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}).Info(fmt.Sprintf("Trying to label node %s", nodeName))
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node, err := client.CoreV1().Nodes().Get(context.TODO(), nodeName, metav1.GetOptions{})
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if err != nil {
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return fmt.Errorf("Could not find Kubernetes node: %s", err.Error())
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}
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if node.Labels == nil {
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node.Labels = make(map[string]string)
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}
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node.Labels[cfg.CiliumLabel] = "true"
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node.Labels["cilium.uploadfilter24.eu/lease"] = leaseName
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_, err = client.CoreV1().Nodes().Update(context.TODO(), node, metav1.UpdateOptions{})
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if err != nil {
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return fmt.Errorf("Could not update node label: %s", err.Error())
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}
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log.WithFields(log.Fields{
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"Caller": "ApplyLabelToNode",
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}).Info(fmt.Sprintf("Node %s labeled with %s=%s\n", nodeName, cfg.CiliumLabel, "true"))
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return nil
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}
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func RemoveLabelFromNode(nodeName string) error {
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client, err := generateClient()
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if err != nil {
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return fmt.Errorf("Could not generate client: %s", err.Error())
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}
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log.WithFields(log.Fields{
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"Caller": "LabelNode",
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}).Info(fmt.Sprintf("Removing Label from node %s", nodeName))
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labelKey := "metallb-speaker"
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node, err := client.CoreV1().Nodes().Get(context.TODO(), nodeName, metav1.GetOptions{})
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if err != nil {
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panic(err.Error())
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}
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delete(node.Labels, labelKey)
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_, err = client.CoreV1().Nodes().Update(context.TODO(), node, metav1.UpdateOptions{})
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if err != nil {
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panic(err.Error())
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}
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fmt.Printf("Label %s removed from node %s\n", labelKey, nodeName)
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return nil
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}
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func GetNodeNameFromLease(lease v1.Lease) (string, error) {
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if lease.Spec.HolderIdentity == nil {
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return "", fmt.Errorf("Lease %s has no HolderIdentity", lease.Name)
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}
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holderIdentity := *lease.Spec.HolderIdentity
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return holderIdentity, nil
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}
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