fix json tag (#769)

log/level.go

@@ -17,11 +17,6 @@ const (
 	LevelError
 )
 
-// Enabled compare whether the logging level is enabled.
-func (l Level) Enabled(lv Level) bool {
-	return lv >= l
-}
-
 func (l Level) String() string {
 	switch l {
 	case LevelDebug:

registry/registry.go

@@ -32,16 +32,16 @@ type Watcher interface {
 // ServiceInstance is an instance of a service in a discovery system.
 type ServiceInstance struct {
 	// ID is the unique instance ID as registered.
-	ID string
+	ID string `json:"id"`
 	// Name is the service name as registered.
-	Name string
+	Name string `json:"name"`
 	// Version is the version of the compiled.
-	Version string
+	Version string `json:"version"`
 	// Metadata is the kv pair metadata associated with the service instance.
-	Metadata map[string]string
+	Metadata map[string]string `json:"metadata"`
 	// Endpoints is endpoint addresses of the service instance.
 	// schema:
 	//   http://127.0.0.1:8000?isSecure=false
 	//   grpc://127.0.0.1:9000?isSecure=false
-	Endpoints []string
+	Endpoints []string `json:"endpoints"`
 }