add ability to get root-router

fluent · Apr 28, 2021 · 9e1819f · 9e1819f
1 parent 2cbb650
commit 9e1819f
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/lib/fluent/plugin_helper/event_emitter.rb b/lib/fluent/plugin_helper/event_emitter.rb
@@ -47,7 +47,11 @@ def event_emitter_used_actually?
 
       def event_emitter_router(label_name)
         if label_name
-          Engine.root_agent.find_label(label_name).event_router
+          if label_name == ""
+            Engine.root_agent.event_router
+          else
+            Engine.root_agent.find_label(label_name).event_router
+          end
         elsif self.respond_to?(:as_secondary) && self.as_secondary
           if @primary_instance.has_router?
             @_event_emitter_lazy_init = true