1 files changed, 0 insertions, 75 deletions
diff --git a/lib/gitlab/tracing/rails/action_view_subscriber.rb b/lib/gitlab/tracing/rails/action_view_subscriber.rb
deleted file mode 100644
index 88816e1fb32..00000000000
--- a/lib/gitlab/tracing/rails/action_view_subscriber.rb
+++ /dev/null
@@ -1,75 +0,0 @@
-# frozen_string_literal: true
-
-module Gitlab
-  module Tracing
-    module Rails
-      class ActionViewSubscriber
-        include RailsCommon
-
-        COMPONENT_TAG = 'ActionView'
-        RENDER_TEMPLATE_NOTIFICATION_TOPIC = 'render_template.action_view'
-        RENDER_COLLECTION_NOTIFICATION_TOPIC = 'render_collection.action_view'
-        RENDER_PARTIAL_NOTIFICATION_TOPIC = 'render_partial.action_view'
-
-        # Instruments Rails ActionView events for opentracing.
-        # Returns a lambda, which, when called will unsubscribe from the notifications
-        def self.instrument
-          subscriber = new
-
-          subscriptions = [
-            ActiveSupport::Notifications.subscribe(RENDER_TEMPLATE_NOTIFICATION_TOPIC) do |_, start, finish, _, payload|
-              subscriber.notify_render_template(start, finish, payload)
-            end,
-            ActiveSupport::Notifications.subscribe(RENDER_COLLECTION_NOTIFICATION_TOPIC) do |_, start, finish, _, payload|
-              subscriber.notify_render_collection(start, finish, payload)
-            end,
-            ActiveSupport::Notifications.subscribe(RENDER_PARTIAL_NOTIFICATION_TOPIC) do |_, start, finish, _, payload|
-              subscriber.notify_render_partial(start, finish, payload)
-            end
-          ]
-
-          create_unsubscriber subscriptions
-        end
-
-        # For more information on the payloads: https://guides.rubyonrails.org/active_support_instrumentation.html
-        def notify_render_template(start, finish, payload)
-          generate_span_for_notification("render_template", start, finish, payload, tags_for_render_template(payload))
-        end
-
-        def notify_render_collection(start, finish, payload)
-          generate_span_for_notification("render_collection", start, finish, payload, tags_for_render_collection(payload))
-        end
-
-        def notify_render_partial(start, finish, payload)
-          generate_span_for_notification("render_partial", start, finish, payload, tags_for_render_partial(payload))
-        end
-
-        private
-
-        def tags_for_render_template(payload)
-          {
-            'component' =>       COMPONENT_TAG,
-            'template.id' =>     payload[:identifier],
-            'template.layout' => payload[:layout]
-          }
-        end
-
-        def tags_for_render_collection(payload)
-          {
-            'component' =>            COMPONENT_TAG,
-            'template.id' =>          payload[:identifier],
-            'template.count' =>       payload[:count] || 0,
-            'template.cache.hits' =>  payload[:cache_hits] || 0
-          }
-        end
-
-        def tags_for_render_partial(payload)
-          {
-            'component' =>            COMPONENT_TAG,
-            'template.id' =>          payload[:identifier]
-          }
-        end
-      end
-    end
-  end
-end