generalized event handler

app/dispatcher/impl/default.go

@@ -39,7 +39,7 @@ func NewDefaultDispatcher(ctx context.Context, config *dispatcher.Config) (*Defa
 		return nil, newError("no space in context")
 	}
 	d := &DefaultDispatcher{}
-	space.OnInitialize(func() error {
+	space.On(app.SpaceInitializing, func(interface{}) error {
 		d.ohm = proxyman.OutboundHandlerManagerFromSpace(space)
 		if d.ohm == nil {
 			return newError("OutboundHandlerManager is not found in the space")