Add :location to process_action.action_controller payloads

actionpack/CHANGELOG.md

+*   `process_action.action_controller` notifications include the `Location`
+    response header under `:location` in their payloads.
+
+    *George Claghorn*
+
 *   Updated `ActionDispatch::Request.remote_ip` setter to clear set the instance
     `remote_ip` to `nil` before setting the header that the value is derived
     from.

actionpack/lib/action_controller/metal/instrumentation.rb

@@ -31,7 +31,8 @@ def process_action(*)
 
       ActiveSupport::Notifications.instrument("process_action.action_controller", raw_payload) do |payload|
         result = super
-        payload[:status] = response.status
+        payload[:status]   = response.status
+        payload[:location] = response.filtered_location
         result
       ensure
         append_info_to_payload(payload)

guides/source/active_support_instrumentation.md

@@ -141,6 +141,7 @@ Action Controller
 | `:method`       | HTTP request verb                                         |
 | `:path`         | Request path                                              |
 | `:status`       | HTTP status code                                          |
+| `:location`     | Location response header                                  |
 | `:view_runtime` | Amount spent in view in ms                                |
 | `:db_runtime`   | Amount spent executing database queries in ms             |