Merge branch 'sentry-js' into 'master'

Add Sentry logging for JavaScript errors

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/12675

See merge request !3795

CHANGELOG

@@ -86,6 +86,7 @@ v 8.7.0 (unreleased)
   - Fix repository cache invalidation issue when project is recreated with an empty repo (Stan Hu)
   - Fix: Allow empty recipients list for builds emails service when pushed is added (Frank Groeneveld)
   - Improved markdown forms
+  - Show JavaScript errors in sentry
   - Delete tags using Rugged for performance reasons (Robert Schilling)
   - Add Slack notifications when Wiki is edited (Sebastian Klier)
   - Diffs load at the correct point when linking from from number

app/assets/javascripts/application.js.coffee

@@ -55,6 +55,7 @@
 #= require_tree .
 #= require fuzzaldrin-plus
 #= require cropper
+#= require raven
 
 window.slugify = (text) ->
   text.replace(/[^-a-zA-Z0-9]+/g, '_').toLowerCase()

app/assets/javascripts/raven_config.js.coffee

@@ -0,0 +1,44 @@
+@raven =
+  init: ->
+    if gon.sentry_dsn?
+      Raven.config(gon.sentry_dsn, {
+        includePaths: [/gon.relative_url_root/]
+        ignoreErrors: [
+          # Random plugins/extensions
+          'top.GLOBALS',
+          # See: http://blog.errorception.com/2012/03/tale-of-unfindable-js-error. html
+          'originalCreateNotification',
+          'canvas.contentDocument',
+          'MyApp_RemoveAllHighlights',
+          'http://tt.epicplay.com',
+          'Can\'t find variable: ZiteReader',
+          'jigsaw is not defined',
+          'ComboSearch is not defined',
+          'http://loading.retry.widdit.com/',
+          'atomicFindClose',
+          # ISP "optimizing" proxy - `Cache-Control: no-transform` seems to
+          # reduce this. (thanks @acdha)
+          # See http://stackoverflow.com/questions/4113268
+          'bmi_SafeAddOnload',
+          'EBCallBackMessageReceived',
+          # See http://toolbar.conduit.com/Developer/HtmlAndGadget/Methods/JSInjection.aspx
+          'conduitPage'
+        ],
+        ignoreUrls: [
+          # Chrome extensions
+          /extensions\//i,
+          /^chrome:\/\//i,
+          # Other plugins
+          /127\.0\.0\.1:4001\/isrunning/i,  # Cacaoweb
+          /webappstoolbarba\.texthelp\.com\//i,
+          /metrics\.itunes\.apple\.com\.edgesuite\.net\//i
+        ]
+      }).install()
+
+    if gon.current_user_id
+      Raven.setUserContext({
+        id: gon.current_user_id
+      })
+
+$ ->
+  raven.init()

lib/gitlab/gon_helper.rb

@@ -7,6 +7,7 @@ module Gitlab
       gon.max_file_size          = current_application_settings.max_attachment_size
       gon.relative_url_root      = Gitlab.config.gitlab.relative_url_root
       gon.user_color_scheme      = Gitlab::ColorSchemes.for_user(current_user).css_class
+      gon.sentry_dsn             = ApplicationSetting.current.sentry_dsn if Rails.env.production?
 
       if current_user
         gon.current_user_id = current_user.id