[feature] enable profiling in production (#1449)

* [feature] enable profiling in production (#1448)

## Shows application profiling
When enabled, shows profiling information to admin users
<img width="1728" alt="Screen Shot 2023-03-10 at 6 27 18 PM" src="https://user-images.githubusercontent.com/35935196/224448480-6cf1f7ec-e48d-4c9b-8a88-df1de8b5571a.png">

## Permissions
Ensure user has `show profiler` permission
<img width="1728" alt="Screen Shot 2023-03-10 at 6 28 13 PM" src="https://user-images.githubusercontent.com/35935196/224448545-ea9afe62-e68d-4681-a332-7c98fc5d251c.png">

## Profiling configuration
Append `?pp=help` to access the profiling help page
<img width="1728" alt="Screen Shot 2023-03-10 at 6 27 41 PM" src="https://user-images.githubusercontent.com/35935196/224448618-c8eebc9f-b845-43c8-931f-0d9f25218a76.png">

## Improve app performance!
Use instrumentation to track down performance bottlenecks and improve app performance 
<img width="1728" alt="Screen Shot 2023-03-10 at 6 29 32 PM" src="https://user-images.githubusercontent.com/35935196/224448636-d6d0bb5e-3597-4b9e-8b6d-f7487eb88d04.png">

* add permissions (#1450)

Co-authored-by: donrestarone <shashikejayatunge@gmail.co>

---------

Co-authored-by: donrestarone <shashikejayatunge@gmail.co>

Author: donrestarone

Gemfile

@@ -62,16 +62,20 @@ gem 'net-ssh', '>= 6.0.2'
 gem 'ed25519', '>= 1.2', '< 2.0'
 gem 'bcrypt_pbkdf', '>= 1.0', '< 2.0'
 
+# Display performance information such as SQL time and flame graphs for each request in your browser.
+# Can be configured to work on production as well see: https://github.com/MiniProfiler/rack-mini-profiler/blob/master/README.md
+gem 'rack-mini-profiler', '~> 3.0', require: false
+gem 'flamegraph'
+gem 'stackprof'
+gem 'memory_profiler'
+
 group :development, :test do
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console
   gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
   gem 'pry'
 end
 
 group :development do
-  # Display performance information such as SQL time and flame graphs for each request in your browser.
-  # Can be configured to work on production as well see: https://github.com/MiniProfiler/rack-mini-profiler/blob/master/README.md
-  gem 'rack-mini-profiler', '~> 2.0'
   gem 'listen', '~> 3.3'
   # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
   gem 'spring'

Gemfile.lock

@@ -216,6 +216,7 @@ GEM
     faker (2.21.0)
       i18n (>= 1.8.11, < 2)
     ffi (1.15.5)
+    flamegraph (0.9.5)
     font-awesome-sass (5.15.1)
       sassc (>= 1.11)
     friendly_id (5.4.2)
@@ -276,6 +277,7 @@ GEM
     mailgun-ruby (1.2.4)
       rest-client (>= 2.0.2)
     marcel (1.0.2)
+    memory_profiler (1.0.1)
     meta-tags (2.14.0)
       actionpack (>= 3.2.0, < 6.2)
     method_source (1.0.0)
@@ -317,7 +319,7 @@ GEM
       rack (>= 0.4)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
-    rack-mini-profiler (2.3.1)
+    rack-mini-profiler (3.0.0)
       rack (>= 1.2.0)
     rack-protection (2.2.0)
       rack
@@ -439,6 +441,7 @@ GEM
     sshkit (1.21.2)
       net-scp (>= 1.1.2)
       net-ssh (>= 2.8.0)
+    stackprof (0.2.23)
     stripe (7.1.0)
     stripe-rails (2.3.5)
       rails (>= 5.1)
@@ -519,6 +522,7 @@ DEPENDENCIES
   ember-cli-rails (= 0.10.0)
   exception_notification (~> 4.5)
   faker
+  flamegraph
   friendly_id
   graphiql-rails
   graphql (~> 2.0)
@@ -531,14 +535,15 @@ DEPENDENCIES
   listen (~> 3.3)
   local_time
   mailgun-ruby
+  memory_profiler
   meta-tags
   mocha
   net-ssh (>= 6.0.2)
   pg (~> 1.1)
   pry
   puma (~> 5.6)
   rack-cors
-  rack-mini-profiler (~> 2.0)
+  rack-mini-profiler (~> 3.0)
   rack-timeout (~> 0.6)
   rails (~> 6.1.5)
   rails-controller-testing
@@ -554,6 +559,7 @@ DEPENDENCIES
   sinatra
   sitemap_generator
   spring
+  stackprof
   stripe-rails
   turbo-rails (~> 1.1)
   turnout (~> 2.5)

app/controllers/application_controller.rb

@@ -1,9 +1,8 @@
 class ApplicationController < ActionController::Base
   include ActiveStorage::SetCurrent
 
-  before_action :prepare_exception_notifier
   before_action :store_user_location!, if: :storable_location?
-  before_action :set_current_user
+  before_action :prepare_profiler,:prepare_exception_notifier , :set_current_user
 
   def after_sign_in_path_for(resource)
     if session[:user_return_to] then return session[:user_return_to] end
@@ -41,6 +40,12 @@ def prepare_exception_notifier
     }
   end
 
+  def prepare_profiler
+    if current_user && current_user.can_access_admin? & current_user.show_profiler?
+      Rack::MiniProfiler.authorize_request
+    end
+  end
+
   # Reference: https://github.com/heartcombo/devise/wiki/How-To:-Redirect-back-to-current-page-after-sign-in,-sign-out,-sign-up,-update#storelocation-to-the-rescue
   def storable_location?
     request.get? && is_navigational_format? && !devise_controller? && !request.xhr? 

app/controllers/comfy/admin/users_controller.rb

@@ -88,6 +88,7 @@ def update_params
       :can_manage_subdomain_settings,
       :can_access_admin,
       :deliver_error_notifications,
+      :show_profiler,
       category_ids: [],
       api_accessibility: {}
     )

app/models/user.rb

@@ -43,11 +43,14 @@ class User < ApplicationRecord
     :invitation_limit	,
     :invited_by_type,
     :invited_by_id,
-    :invitations_count
+    :invitations_count,
+    :global_admin,
+    :show_profiler,
   ]
 
   FULL_PERMISSIONS = {
     can_access_admin: true,
+    can_access_forum: true,
     can_manage_web: true,
     can_manage_analytics: true,
     can_manage_files: true,
@@ -57,7 +60,8 @@ class User < ApplicationRecord
     can_manage_subdomain_settings: true,
     api_accessibility: {api_namespaces: {all_namespaces: {full_access: 'true'}}, api_keys: {full_access: 'true'}},
     can_view_restricted_pages: true,
-    moderator: true
+    moderator: true,
+    deliver_error_notifications: true,
   }
 
   SESSION_TIMEOUT = [

app/views/comfy/admin/users/_form.haml

@@ -56,7 +56,11 @@
               .form-group
                 = f.check_box :deliver_error_notifications
                 %label 
-                  Deliver error notifications                  
+                  Deliver error notifications   
+              .form-group
+                = f.check_box :show_profiler
+                %label 
+                  Show Profiler                  
               .form-group
                 = f.check_box :can_manage_users
                 %label 

config/environments/development.rb

@@ -84,6 +84,4 @@
 
   # Uncomment if you wish to allow Action Cable access from any origin.
   # config.action_cable.disable_request_forgery_protection = true
-
-  Rack::MiniProfiler.config.position = 'bottom-right'
 end

config/initializers/rack_profiler.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+require "rack-mini-profiler"
+
+# initialization is skipped so trigger it
+Rack::MiniProfilerRails.initialize!(Rails.application)
+Rack::MiniProfiler.config.position = 'bottom-right'
+Rack::MiniProfiler.config.authorization_mode = :allow_authorized
+Rack::MiniProfiler.config.enable_hotwire_turbo_drive_support = true
+Rack::MiniProfiler.config.enable_advanced_debugging_tools = true

db/migrate/20230310222034_add_show_profiler_to_users.rb

@@ -0,0 +1,5 @@
+class AddShowProfilerToUsers < ActiveRecord::Migration[6.1]
+  def change
+    add_column :users, :show_profiler, :boolean, default: false
+  end
+end