From 4fc38c720843c0f280eaf1133a2fe801058d0552 Mon Sep 17 00:00:00 2001
From: Sebastian Serth <Sebastian.Serth@hpi.de>
Date: Fri, 18 Aug 2023 09:52:52 +0200
Subject: [PATCH] Enable Sentry browser profiling

---
 app/assets/javascripts/base.js            | 1 +
 app/controllers/application_controller.rb | 8 +++++++-
 app/javascript/application.js             | 1 +
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/app/assets/javascripts/base.js b/app/assets/javascripts/base.js
index a2cabeec..1e6ed0b8 100644
--- a/app/assets/javascripts/base.js
+++ b/app/assets/javascripts/base.js
@@ -57,6 +57,7 @@ $(document).on('turbolinks:load', function() {
             replaysSessionSampleRate: 0.0,
             replaysOnErrorSampleRate: 1.0,
             integrations: window.SentryIntegrations(),
+            profilesSampleRate: 1.0,
             initialScope: scope =>{
                 const user = $('meta[name="current-user"]').attr('content');
 
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 9c389afd..22f3b126 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -13,7 +13,7 @@ class ApplicationController < ActionController::Base
   after_action :verify_authorized, except: %i[welcome]
   around_action :mnemosyne_trace
   around_action :switch_locale
-  before_action :set_sentry_context, :load_embed_options
+  before_action :set_sentry_context, :load_embed_options, :set_document_policy
   protect_from_forgery(with: :exception, prepend: true)
   rescue_from Pundit::NotAuthorizedError, with: :render_not_authorized
   rescue_from ActiveRecord::RecordNotFound, with: :render_not_found
@@ -72,6 +72,12 @@ class ApplicationController < ActionController::Base
     end
   end
 
+  def set_document_policy
+    # Instruct browsers to capture profiling data
+    response.set_header('Document-Policy', 'js-profiling')
+  end
+  private :set_document_policy
+
   def set_sentry_context
     return if current_user.blank?
 
diff --git a/app/javascript/application.js b/app/javascript/application.js
index 5310cb64..312c7310 100644
--- a/app/javascript/application.js
+++ b/app/javascript/application.js
@@ -29,6 +29,7 @@ window.SentryIntegrations = function() { // Publish sentry integration in global
         new SentryIntegration.ReportingObserver(),
         new SentryIntegration.ExtraErrorData(),
         new SentryIntegration.HttpClient(),
+        new Sentry.BrowserProfilingIntegration(),
         new Sentry.BrowserTracing(),
         new Sentry.Replay(),
     ]