Moved to google.golang.org/genproto/googleapis/api/annotations

Fixes #52

vendor/github.com/go-kit/kit/sd/zk/registrar.go

@@ -0,0 +1,51 @@
+package zk
+
+import "github.com/go-kit/kit/log"
+
+// Registrar registers service instance liveness information to ZooKeeper.
+type Registrar struct {
+	client  Client
+	service Service
+	logger  log.Logger
+}
+
+// Service holds the root path, service name and instance identifying data you
+// want to publish to ZooKeeper.
+type Service struct {
+	Path string // discovery namespace, example: /myorganization/myplatform/
+	Name string // service name, example: addscv
+	Data []byte // instance data to store for discovery, example: 10.0.2.10:80
+	node string // Client will record the ephemeral node name so we can deregister
+}
+
+// NewRegistrar returns a ZooKeeper Registrar acting on the provided catalog
+// registration.
+func NewRegistrar(client Client, service Service, logger log.Logger) *Registrar {
+	return &Registrar{
+		client:  client,
+		service: service,
+		logger: log.With(logger,
+			"service", service.Name,
+			"path", service.Path,
+			"data", string(service.Data),
+		),
+	}
+}
+
+// Register implements sd.Registrar interface.
+func (r *Registrar) Register() {
+	if err := r.client.Register(&r.service); err != nil {
+		r.logger.Log("err", err)
+	} else {
+		r.logger.Log("action", "register")
+	}
+}
+
+// Deregister implements sd.Registrar interface.
+func (r *Registrar) Deregister() {
+	if err := r.client.Deregister(&r.service); err != nil {
+		r.logger.Log("err", err)
+	} else {
+		r.logger.Log("action", "deregister")
+	}
+}