mirror of https://github.com/k3s-io/k3s
93 lines
2.2 KiB
Go
93 lines
2.2 KiB
Go
package etcd
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import (
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"context"
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"os"
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"time"
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controllerv1 "github.com/rancher/wrangler/pkg/generated/controllers/core/v1"
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"github.com/sirupsen/logrus"
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v1 "k8s.io/api/core/v1"
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)
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func registerMetadataHandlers(ctx context.Context, etcd *ETCD) {
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nodes := etcd.config.Runtime.Core.Core().V1().Node()
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h := &metadataHandler{
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etcd: etcd,
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nodeController: nodes,
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ctx: ctx,
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}
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logrus.Infof("Starting managed etcd node metadata controller")
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nodes.OnChange(ctx, "managed-etcd-metadata-controller", h.sync)
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}
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type metadataHandler struct {
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etcd *ETCD
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nodeController controllerv1.NodeController
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ctx context.Context
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}
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func (m *metadataHandler) sync(key string, node *v1.Node) (*v1.Node, error) {
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if node == nil {
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return nil, nil
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}
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nodeName := os.Getenv("NODE_NAME")
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if nodeName == "" {
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logrus.Debug("waiting for node name to be assigned for managed etcd node metadata controller")
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m.nodeController.EnqueueAfter(key, 5*time.Second)
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return node, nil
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}
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if key == nodeName {
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return m.handleSelf(node)
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}
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return node, nil
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}
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func (m *metadataHandler) handleSelf(node *v1.Node) (*v1.Node, error) {
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if m.etcd.config.DisableETCD {
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if node.Annotations[NodeNameAnnotation] == "" &&
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node.Annotations[NodeAddressAnnotation] == "" &&
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node.Labels[EtcdRoleLabel] == "" {
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return node, nil
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}
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node = node.DeepCopy()
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if node.Annotations == nil {
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node.Annotations = map[string]string{}
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}
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if node.Labels == nil {
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node.Labels = map[string]string{}
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}
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delete(node.Annotations, NodeNameAnnotation)
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delete(node.Annotations, NodeAddressAnnotation)
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delete(node.Labels, EtcdRoleLabel)
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return m.nodeController.Update(node)
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}
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if node.Annotations[NodeNameAnnotation] == m.etcd.name &&
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node.Annotations[NodeAddressAnnotation] == m.etcd.address &&
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node.Labels[EtcdRoleLabel] == "true" {
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return node, nil
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}
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node = node.DeepCopy()
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if node.Annotations == nil {
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node.Annotations = map[string]string{}
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}
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if node.Labels == nil {
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node.Labels = map[string]string{}
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}
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node.Annotations[NodeNameAnnotation] = m.etcd.name
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node.Annotations[NodeAddressAnnotation] = m.etcd.address
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node.Labels[EtcdRoleLabel] = "true"
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return m.nodeController.Update(node)
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}
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