Add RegistryReader interface for read-only registry

http/handler/api/session.go

@@ -13,11 +13,11 @@ import (
 
 // The SessionHandler type provides handlers to retrieve session information
 type SessionHandler struct {
-	registry session.Registry
+	registry session.RegistryReader
 }
 
 // NewSession returns a new Session type. You have to provide a session registry.
-func NewSession(registry session.Registry) *SessionHandler {
+func NewSession(registry session.RegistryReader) *SessionHandler {
 	return &SessionHandler{
 		registry: registry,
 	}

http/handler/api/widget.go

@@ -13,13 +13,13 @@ import (
 
 type WidgetConfig struct {
 	Restream restream.Restreamer
-	Registry session.Registry
+	Registry session.RegistryReader
 }
 
 // The WidgetHandler type provides handlers for the widget API
 type WidgetHandler struct {
 	restream restream.Restreamer
-	registry session.Registry
+	registry session.RegistryReader
 }
 
 // NewWidget return a new Widget type

http/server.go

@@ -89,7 +89,7 @@ type Config struct {
 	JWT           jwt.JWT
 	Config        config.Store
 	Cache         cache.Cacher
-	Sessions      session.Registry
+	Sessions      session.RegistryReader
 	Router        router.Router
 	ReadOnly      bool
 }