Ensure ActionMailer is instrumented after ActiveSupport finishes loading

hmadison · hmadison · commit 791aadbad4f1 · 2021-07-08T05:48:15.000-04:00
diff --git a/lib/instana/activators/action_mailer.rb b/lib/instana/activators/action_mailer.rb
@@ -5,7 +5,7 @@ module Instana
   module Activators
     class ActionMailer < Activator
       def can_instrument?
-        defined?(::ActionMailer::Base)
+        defined?(::ActionMailer::Base) && defined?(ActiveSupport::Executor)
       end
 
       def instrument
