Update skylight, rollbar, add instrumentation for images endpoint slowness

Gemfile.lock

@@ -67,7 +67,7 @@ GEM
     cocaine (0.5.8)
       climate_control (>= 0.0.3, < 1.0)
     coderay (1.1.1)
-    concurrent-ruby (1.0.2)
+    concurrent-ruby (1.0.5)
     daemons (1.2.4)
     database_cleaner (1.5.3)
     delayed_job (4.1.2)
@@ -112,7 +112,7 @@ GEM
       activesupport (>= 4.1.0)
     http-cookie (1.0.3)
       domain_name (~> 0.5)
-    i18n (0.7.0)
+    i18n (0.8.1)
     json (1.8.3)
     json-schema-generator (0.0.9)
       jsonpath
@@ -134,7 +134,7 @@ GEM
     mime-types-data (3.2016.0521)
     mimemagic (0.3.2)
     mini_portile2 (2.1.0)
-    minitest (5.9.1)
+    minitest (5.10.1)
     montrose (0.6.0)
       activesupport (>= 4.1, < 5.1)
     multi_json (1.12.1)
@@ -203,7 +203,7 @@ GEM
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
-    rollbar (2.13.3)
+    rollbar (2.14.1)
       multi_json
     rspec (3.5.0)
       rspec-core (~> 3.5.0)
@@ -232,7 +232,7 @@ GEM
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.0)
-    skylight (1.0.1)
+    skylight (1.2.2)
       activesupport (>= 3.0.0)
     slop (3.6.0)
     sprockets (3.7.0)
@@ -247,8 +247,8 @@ GEM
       eventmachine (~> 1.0, >= 1.0.4)
       rack (>= 1, < 3)
     thor (0.19.4)
-    thread_safe (0.3.5)
-    tzinfo (1.2.2)
+    thread_safe (0.3.6)
+    tzinfo (1.2.3)
       thread_safe (~> 0.1)
     unf (0.1.4)
       unf_ext

app/controllers/api/images_controller.rb

@@ -1,5 +1,7 @@
 module Api
   class ImagesController < Api::AbstractController
+    include Skylight::Helpers
+
     BUCKET = ENV.fetch("GCS_BUCKET") { "YOU_MUST_CONFIG_GOOGLE_CLOUD_STORAGE" }
     KEY    = ENV.fetch("GCS_KEY") { "" }
     SECRET = ENV.fetch("GCS_ID") { "" }
@@ -8,6 +10,7 @@ module Api
         mutate Images::Create.run({device: current_device}, raw_json)
     end
 
+    instrument_method
     def index
       mutate Images::Fetch.run(device: current_device)
     end

app/mutations/images/fetch.rb

@@ -1,11 +1,14 @@
 module Images
   class Fetch  < Mutations::Command
+    include Skylight::Helpers
+
     required do
       model :device, class: Device
     end
 
+    instrument_method
     def execute
         device.images.order(created_at: :desc).first(device.max_images_count)
     end
   end
-end
+end

app/serializers/image_serializer.rb

@@ -1,7 +1,9 @@
 class ImageSerializer < ActiveModel::Serializer
+  include Skylight::Helpers
   attributes :id, :device_id, :attachment_processed_at, :updated_at,
              :created_at, :attachment_url, :meta
 
+  instrument_method
   def attachment_url
     object.attachment.url("x640")
   end