add kubernetes registry back since its being used...

registry/kubernetes/watcher.go

@@ -0,0 +1,91 @@
+package kubernetes
+
+import (
+	"net"
+
+	"github.com/myodc/go-micro/registry"
+	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/fields"
+	"k8s.io/kubernetes/pkg/labels"
+	"k8s.io/kubernetes/pkg/watch"
+)
+
+type watcher struct {
+	registry *kregistry
+	watcher  watch.Interface
+}
+
+func (k *watcher) update(event watch.Event) {
+	if event.Object == nil {
+		return
+	}
+
+	var service *api.Service
+	switch obj := event.Object.(type) {
+	case *api.Service:
+		service = obj
+	default:
+		return
+	}
+
+	name, exists := service.ObjectMeta.Labels["name"]
+	if !exists {
+		return
+	}
+
+	switch event.Type {
+	case watch.Added, watch.Modified:
+	case watch.Deleted:
+		k.registry.mtx.Lock()
+		delete(k.registry.services, name)
+		k.registry.mtx.Unlock()
+		return
+	default:
+		return
+	}
+
+	serviceIP := net.ParseIP(service.Spec.ClusterIP)
+
+	k.registry.mtx.Lock()
+	k.registry.services[name] = &registry.Service{
+		Name: name,
+		Nodes: []*registry.Node{
+			&registry.Node{
+				Address: serviceIP.String(),
+				Port:    service.Spec.Ports[0].Port,
+			},
+		},
+	}
+	k.registry.mtx.Unlock()
+}
+
+func (k *watcher) Stop() {
+	k.watcher.Stop()
+}
+
+func newWatcher(kr *kregistry) (registry.Watcher, error) {
+	svi := kr.client.Services(api.NamespaceAll)
+
+	services, err := svi.List(labels.Everything())
+	if err != nil {
+		return nil, err
+	}
+
+	watch, err := svi.Watch(labels.Everything(), fields.Everything(), services.ResourceVersion)
+	if err != nil {
+		return nil, err
+	}
+
+	w := &watcher{
+		registry: kr,
+		watcher:  watch,
+	}
+
+	go func() {
+		for event := range watch.ResultChan() {
+			w.update(event)
+		}
+	}()
+
+	return w, nil
+}