[PR] Fixes #36898 - add rack-mini-profiler

Co-authored-by: Ewoud Kohl van Wijngaarden <[email protected]>

from theforeman#9897

Author: m-bucher

bundler.d/profiling.rb

@@ -0,0 +1,9 @@
+group :profiling, optional: true do
+  gem 'rack-mini-profiler'
+
+  # For memory profiling
+  gem 'memory_profiler'
+
+  # For call-stack profiling flamegraphs
+  gem 'stackprof'
+end

config/application.rb

@@ -56,7 +56,7 @@ class Foreman::Consoletie < Rails::Railtie
       end
     end
     Bundler.require(*Rails.groups)
-    optional_bundler_groups = %w[assets ec2 fog libvirt openstack ovirt vmware redis]
+    optional_bundler_groups = %w[assets ec2 fog libvirt openstack ovirt profiling vmware]
     optional_bundler_groups.each do |group|
       Bundler.require(group)
     rescue LoadError

config/initializers/rack_mini_profiler.rb

@@ -0,0 +1,7 @@
+if defined? Rack::MiniProfiler
+  # enable profiling for all pages; per-default it is disabled on production-env
+  Rack::MiniProfiler.config.authorization_mode = SETTINGS.fetch(:profiler_authorization_mode, :allow_all)
+
+  # enable additional profiling-features
+  Rack::MiniProfiler.config.enable_advanced_debugging_tools = true
+end