AO3-5832 Return 444 for Elasticsearch errors (#3701)

* Redirect Elasticsearch::Transport::Transport::Errors::ServiceUnavailable to our custom error * Follow the hound * AO3-5832 Add a comment for 444
otwcode · Dec 2, 2019 · fd853c7 · fd853c7
1 parent d2928c0
commit fd853c7
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
@@ -4,6 +4,11 @@ class ApplicationController < ActionController::Base
   protect_from_forgery with: :exception, prepend: true
   rescue_from ActionController::InvalidAuthenticityToken, with: :display_auth_error
   rescue_from ActionController::UnknownFormat, with: :raise_not_found
+  rescue_from Elasticsearch::Transport::Transport::Errors::ServiceUnavailable do
+    # Non-standard code used by nginx: closes a connection without sending
+    # a response header.
+    head 444
+  end
 
   def raise_not_found
     redirect_to '/404'