use Gitlab::UserSettings directly as a singleton instead of including/extending it

app/controllers/admin/cohorts_controller.rb

 class Admin::CohortsController < Admin::ApplicationController
   def index
-    if current_application_settings.usage_ping_enabled
+    if Gitlab::CurrentSettings.usage_ping_enabled
       cohorts_results = Rails.cache.fetch('cohorts', expires_in: 1.day) do
         CohortsService.new.execute
       end

app/controllers/application_controller.rb

@@ -2,7 +2,6 @@ require 'gon'
 require 'fogbugz'
 
 class ApplicationController < ActionController::Base
-  include Gitlab::CurrentSettings
   include Gitlab::GonHelper
   include GitlabRoutingHelper
   include PageLayoutHelper
@@ -28,7 +27,7 @@ class ApplicationController < ActionController::Base
 
   protect_from_forgery with: :exception
 
-  helper_method :can?, :current_application_settings
+  helper_method :can?
   helper_method :import_sources_enabled?, :github_import_enabled?, :gitea_import_enabled?, :github_import_configured?, :gitlab_import_enabled?, :gitlab_import_configured?, :bitbucket_import_enabled?, :bitbucket_import_configured?, :google_code_import_enabled?, :fogbugz_import_enabled?, :git_import_enabled?, :gitlab_project_import_enabled?
 
   rescue_from Encoding::CompatibilityError do |exception|
@@ -108,7 +107,7 @@ class ApplicationController < ActionController::Base
   end
 
   def verify_namespace_plan_check_enabled
-    render_404 unless current_application_settings.should_check_namespace_plan?
+    render_404 unless Gitlab::CurrentSettings.should_check_namespace_plan?
   end
 
   def log_exception(exception)
@@ -127,7 +126,7 @@ class ApplicationController < ActionController::Base
     if Gitlab::Geo.secondary?
       Gitlab::Geo.primary_node.oauth_logout_url(@geo_logout_state)
     else
-      current_application_settings.after_sign_out_path.presence || new_user_session_path
+      Gitlab::CurrentSettings.after_sign_out_path.presence || new_user_session_path
     end
   end
 
@@ -276,15 +275,15 @@ class ApplicationController < ActionController::Base
   end
 
   def import_sources_enabled?
-    !current_application_settings.import_sources.empty?
+    !Gitlab::CurrentSettings.import_sources.empty?
   end
 
   def github_import_enabled?
-    current_application_settings.import_sources.include?('github')
+    Gitlab::CurrentSettings.import_sources.include?('github')
   end
 
   def gitea_import_enabled?
-    current_application_settings.import_sources.include?('gitea')
+    Gitlab::CurrentSettings.import_sources.include?('gitea')
   end
 
   def github_import_configured?
@@ -292,7 +291,7 @@ class ApplicationController < ActionController::Base
   end
 
   def gitlab_import_enabled?
-    request.host != 'gitlab.com' && current_application_settings.import_sources.include?('gitlab')
+    request.host != 'gitlab.com' && Gitlab::CurrentSettings.import_sources.include?('gitlab')
   end
 
   def gitlab_import_configured?
@@ -300,7 +299,7 @@ class ApplicationController < ActionController::Base
   end
 
   def bitbucket_import_enabled?
-    current_application_settings.import_sources.include?('bitbucket')
+    Gitlab::CurrentSettings.import_sources.include?('bitbucket')
   end
 
   def bitbucket_import_configured?
@@ -308,19 +307,19 @@ class ApplicationController < ActionController::Base
   end
 
   def google_code_import_enabled?
-    current_application_settings.import_sources.include?('google_code')
+    Gitlab::CurrentSettings.import_sources.include?('google_code')
   end
 
   def fogbugz_import_enabled?
-    current_application_settings.import_sources.include?('fogbugz')
+    Gitlab::CurrentSettings.import_sources.include?('fogbugz')
   end
 
   def git_import_enabled?
-    current_application_settings.import_sources.include?('git')
+    Gitlab::CurrentSettings.import_sources.include?('git')
   end
 
   def gitlab_project_import_enabled?
-    current_application_settings.import_sources.include?('gitlab_project')
+    Gitlab::CurrentSettings.import_sources.include?('gitlab_project')
   end
 
   # U2F (universal 2nd factor) devices need a unique identifier for the application

app/controllers/concerns/enforces_two_factor_authentication.rb

@@ -20,13 +20,13 @@ module EnforcesTwoFactorAuthentication
   end
 
   def two_factor_authentication_required?
-    current_application_settings.require_two_factor_authentication? ||
+    Gitlab::CurrentSettings.require_two_factor_authentication? ||
       current_user.try(:require_two_factor_authentication_from_group?)
   end
 
   def two_factor_authentication_reason(global: -> {}, group: -> {})
     if two_factor_authentication_required?
-      if current_application_settings.require_two_factor_authentication?
+      if Gitlab::CurrentSettings.require_two_factor_authentication?
         global.call
       else
         groups = current_user.expanded_groups_requiring_two_factor_authentication.reorder(name: :asc)
@@ -36,7 +36,7 @@ module EnforcesTwoFactorAuthentication
   end
 
   def two_factor_grace_period
-    periods = [current_application_settings.two_factor_grace_period]
+    periods = [Gitlab::CurrentSettings.two_factor_grace_period]
     periods << current_user.two_factor_grace_period if current_user.try(:require_two_factor_authentication_from_group?)
     periods.min
   end

app/controllers/concerns/requires_whitelisted_monitoring_client.rb

 module RequiresWhitelistedMonitoringClient
   extend ActiveSupport::Concern
 
-  include Gitlab::CurrentSettings
-
   included do
     before_action :validate_ip_whitelisted_or_valid_token!
   end
@@ -26,7 +24,7 @@ module RequiresWhitelistedMonitoringClient
     token.present? &&
       ActiveSupport::SecurityUtils.variable_size_secure_compare(
         token,
-        current_application_settings.health_check_access_token
+        Gitlab::CurrentSettings.health_check_access_token
       )
   end
 

app/controllers/invites_controller.rb

@@ -51,7 +51,7 @@ class InvitesController < ApplicationController
     return if current_user
 
     notice = "To accept this invitation, sign in"
-    notice << " or create an account" if current_application_settings.allow_signup?
+    notice << " or create an account" if Gitlab::CurrentSettings.allow_signup?
     notice << "."
 
     store_location_for :user, request.fullpath

app/controllers/koding_controller.rb

@@ -10,6 +10,6 @@ class KodingController < ApplicationController
   private
 
   def check_integration!
-    render_404 unless current_application_settings.koding_enabled?
+    render_404 unless Gitlab::CurrentSettings.koding_enabled?
   end
 end

app/controllers/oauth/applications_controller.rb

 class Oauth::ApplicationsController < Doorkeeper::ApplicationsController
-  include Gitlab::CurrentSettings
   include Gitlab::GonHelper
   include PageLayoutHelper
   include OauthApplications
@@ -31,7 +30,7 @@ class Oauth::ApplicationsController < Doorkeeper::ApplicationsController
   private
 
   def verify_user_oauth_applications_enabled
-    return if current_application_settings.user_oauth_applications?
+    return if Gitlab::CurrentSettings.user_oauth_applications?
 
     redirect_to profile_path
   end

app/controllers/omniauth_callbacks_controller.rb

@@ -158,7 +158,7 @@ class OmniauthCallbacksController < Devise::OmniauthCallbacksController
     label = Gitlab::OAuth::Provider.label_for(oauth['provider'])
     message = "Signing in using your #{label} account without a pre-existing GitLab account is not allowed."
 
-    if current_application_settings.allow_signup?
+    if Gitlab::CurrentSettings.allow_signup?
       message << " Create a GitLab account first, and then connect it to your #{label} account."
     end
 

app/controllers/passwords_controller.rb

 class PasswordsController < Devise::PasswordsController
-  include Gitlab::CurrentSettings
-
   skip_before_action :require_no_authentication, only: [:edit, :update]
 
   before_action :resource_from_email, only: [:create]
@@ -48,7 +46,7 @@ class PasswordsController < Devise::PasswordsController
     if resource
       return if resource.allow_password_authentication?
     else
-      return if current_application_settings.password_authentication_enabled?
+      return if Gitlab::CurrentSettings.password_authentication_enabled?
     end
 
     redirect_to after_sending_reset_password_instructions_path_for(resource_name),

app/controllers/projects/settings/integrations_controller.rb

@@ -24,7 +24,7 @@ module Projects
       end
 
       def slack_service
-        if current_application_settings.slack_app_enabled
+        if Gitlab::CurrentSettings.slack_app_enabled
           'slack_slash_commands'
         else
           'gitlab_slack_application'

app/controllers/projects_controller.rb

@@ -404,7 +404,7 @@ class ProjectsController < Projects::ApplicationController
   end
 
   def project_export_enabled
-    render_404 unless current_application_settings.project_export_enabled?
+    render_404 unless Gitlab::CurrentSettings.project_export_enabled?
   end
 
   def redirect_git_extension

app/controllers/root_controller.rb

@@ -23,7 +23,7 @@ class RootController < Dashboard::ProjectsController
 
   def redirect_unlogged_user
     if redirect_to_home_page_url?
-      redirect_to(current_application_settings.home_page_url)
+      redirect_to(Gitlab::CurrentSettings.home_page_url)
     else
       redirect_to(new_user_session_path)
     end
@@ -48,9 +48,9 @@ class RootController < Dashboard::ProjectsController
   def redirect_to_home_page_url?
     # If user is not signed-in and tries to access root_path - redirect him to landing page
     # Don't redirect to the default URL to prevent endless redirections
-    return false unless current_application_settings.home_page_url.present?
+    return false unless Gitlab::CurrentSettings.home_page_url.present?
 
-    home_page_url = current_application_settings.home_page_url.chomp('/')
+    home_page_url = Gitlab::CurrentSettings.home_page_url.chomp('/')
     root_urls = [Gitlab.config.gitlab['url'].chomp('/'), root_url.chomp('/')]
 
     root_urls.exclude?(home_page_url)

app/helpers/application_settings_helper.rb

@@ -2,25 +2,23 @@ module ApplicationSettingsHelper
   prepend EE::ApplicationSettingsHelper
   extend self
 
-  include Gitlab::CurrentSettings
-
   delegate  :allow_signup?,
             :gravatar_enabled?,
             :password_authentication_enabled_for_web?,
             :akismet_enabled?,
             :koding_enabled?,
-            to: :current_application_settings
+            to: :'Gitlab::CurrentSettings.current_application_settings'
 
   def user_oauth_applications?
-    current_application_settings.user_oauth_applications
+    Gitlab::CurrentSettings.user_oauth_applications
   end
 
   def allowed_protocols_present?
-    current_application_settings.enabled_git_access_protocol.present?
+    Gitlab::CurrentSettings.enabled_git_access_protocol.present?
   end
 
   def enabled_protocol
-    case current_application_settings.enabled_git_access_protocol
+    case Gitlab::CurrentSettings.enabled_git_access_protocol
     when 'http'
       gitlab_config.protocol
     when 'ssh'
@@ -58,7 +56,7 @@ module ApplicationSettingsHelper
   # toggle button effect.
   def import_sources_checkboxes(help_block_id)
     Gitlab::ImportSources.options.map do |name, source|
-      checked = current_application_settings.import_sources.include?(source)
+      checked = Gitlab::CurrentSettings.import_sources.include?(source)
       css_class = checked ? 'active' : ''
       checkbox_name = 'application_setting[import_sources][]'
 
@@ -73,7 +71,7 @@ module ApplicationSettingsHelper
 
   def oauth_providers_checkboxes
     button_based_providers.map do |source|
-      disabled = current_application_settings.disabled_oauth_sign_in_sources.include?(source.to_s)
+      disabled = Gitlab::CurrentSettings.disabled_oauth_sign_in_sources.include?(source.to_s)
       css_class = 'btn'
       css_class << ' active' unless disabled
       checkbox_name = 'application_setting[enabled_oauth_sign_in_sources][]'

app/helpers/auth_helper.rb

 module AuthHelper
-  include Gitlab::CurrentSettings
-
   PROVIDERS_WITH_ICONS = %w(twitter github gitlab bitbucket google_oauth2 facebook azure_oauth2 authentiq).freeze
   FORM_BASED_PROVIDERS = [/\Aldap/, 'kerberos', 'crowd'].freeze
 
-  delegate :slack_app_id, to: :current_application_settings
+  delegate :slack_app_id, to: :'Gitlab::CurrentSettings.current_application_settings'
 
   def ldap_enabled?
     Gitlab::LDAP::Config.enabled?
@@ -47,7 +45,7 @@ module AuthHelper
   end
 
   def enabled_button_based_providers
-    disabled_providers = current_application_settings.disabled_oauth_sign_in_sources || []
+    disabled_providers = Gitlab::CurrentSettings.disabled_oauth_sign_in_sources || []
 
     button_based_providers.map(&:to_s) - disabled_providers
   end

app/helpers/projects_helper.rb

 module ProjectsHelper
-  include Gitlab::CurrentSettings
-
   prepend ::EE::ProjectsHelper
 
   def link_to_project(project)
@@ -216,7 +214,7 @@ module ProjectsHelper
       project.cache_key,
       controller.controller_name,
       controller.action_name,
-      current_application_settings.cache_key,
+      Gitlab::CurrentSettings.cache_key,
       'v2.5'
     ]
 
@@ -468,10 +466,10 @@ module ProjectsHelper
 
       path = "#{import_path}?repo=#{repo}&branch=#{branch}&sha=#{sha}"
 
-      return URI.join(current_application_settings.koding_url, path).to_s
+      return URI.join(Gitlab::CurrentSettings.koding_url, path).to_s
     end
 
-    current_application_settings.koding_url
+    Gitlab::CurrentSettings.koding_url
   end
 
   def contribution_guide_path(project)
@@ -588,7 +586,7 @@ module ProjectsHelper
   def restricted_levels
     return [] if current_user.admin?
 
-    current_application_settings.restricted_visibility_levels || []
+    Gitlab::CurrentSettings.restricted_visibility_levels || []
   end
 
   def project_permissions_settings(project)

app/helpers/version_check_helper.rb

 module VersionCheckHelper
   def version_status_badge
-    if Rails.env.production? && current_application_settings.version_check_enabled
+    if Rails.env.production? && Gitlab::CurrentSettings.version_check_enabled
       image_url = VersionCheck.new.url
       image_tag image_url, class: 'js-version-status-badge'
     end

app/helpers/visibility_level_helper.rb

@@ -151,12 +151,12 @@ module VisibilityLevelHelper
   def restricted_visibility_levels(show_all = false)
     return [] if current_user.admin? && !show_all
 
-    current_application_settings.restricted_visibility_levels || []
+    Gitlab::CurrentSettings.restricted_visibility_levels || []
   end
 
   delegate  :default_project_visibility,
             :default_group_visibility,
-            to: :current_application_settings
+            to: :'Gitlab::CurrentSettings.current_application_settings'
 
   def disallowed_visibility_level?(form_model, level)
     return false unless form_model.respond_to?(:visibility_level_allowed?)

app/mailers/abuse_report_mailer.rb

 class AbuseReportMailer < BaseMailer
-  include Gitlab::CurrentSettings
-
   def notify(abuse_report_id)
     return unless deliverable?
 
     @abuse_report = AbuseReport.find(abuse_report_id)
 
     mail(
-      to:       current_application_settings.admin_notification_email,
+      to:       Gitlab::CurrentSettings.admin_notification_email,
       subject:  "#{@abuse_report.user.name} (#{@abuse_report.user.username}) was reported for abuse"
     )
   end
@@ -15,6 +13,6 @@ class AbuseReportMailer < BaseMailer
   private
 
   def deliverable?
-    current_application_settings.admin_notification_email.present?
+    Gitlab::CurrentSettings.admin_notification_email.present?
   end
 end

app/mailers/base_mailer.rb

 class BaseMailer < ActionMailer::Base
-  include Gitlab::CurrentSettings
-
   around_action :render_with_default_locale
 
   helper ApplicationHelper
   helper MarkupHelper
 
   attr_accessor :current_user
-  helper_method :current_user, :can?, :current_application_settings
+  helper_method :current_user, :can?
 
   default from:     proc { default_sender_address.format }
   default reply_to: proc { default_reply_to_address.format }

app/models/clusters/platforms/kubernetes.rb

 module Clusters
   module Platforms
     class Kubernetes < ActiveRecord::Base
-      include Gitlab::CurrentSettings
       include Gitlab::Kubernetes
       include ReactiveCaching
 
@@ -171,7 +170,7 @@ module Clusters
         {
           token: token,
           ca_pem: ca_pem,
-          max_session_time: current_application_settings.terminal_max_session_time
+          max_session_time: Gitlab::CurrentSettings.terminal_max_session_time
         }
       end
 

app/models/group.rb

@@ -230,7 +230,7 @@ class Group < Namespace
   end
 
   def actual_size_limit
-    return current_application_settings.repository_size_limit if repository_size_limit.nil?
+    return Gitlab::CurrentSettings.repository_size_limit if repository_size_limit.nil?
 
     repository_size_limit
   end

app/models/key.rb

 require 'digest/md5'
 
 class Key < ActiveRecord::Base
-  include Gitlab::CurrentSettings
   include AfterCommitQueue
   include Sortable
 
@@ -107,7 +106,7 @@ class Key < ActiveRecord::Base
   end
 
   def key_meets_restrictions
-    restriction = current_application_settings.key_restriction_for(public_key.type)
+    restriction = Gitlab::CurrentSettings.key_restriction_for(public_key.type)
 
     if restriction == ApplicationSetting::FORBIDDEN_KEY_VALUE
       errors.add(:key, forbidden_key_type_message)
@@ -118,7 +117,7 @@ class Key < ActiveRecord::Base
 
   def forbidden_key_type_message
     allowed_types =
-      current_application_settings
+      Gitlab::CurrentSettings
         .allowed_key_types
         .map(&:upcase)
         .to_sentence(last_word_connector: ', or ', two_words_connector: ' or ')

app/models/namespace.rb

@@ -3,7 +3,6 @@ class Namespace < ActiveRecord::Base
   include CacheMarkdownField
   include Sortable
   include Gitlab::ShellAdapter
-  include Gitlab::CurrentSettings
   include Gitlab::VisibilityLevel
   include Routable
   include AfterCommitQueue
@@ -162,7 +161,7 @@ class Namespace < ActiveRecord::Base
   end
 
   def actual_size_limit
-    current_application_settings.repository_size_limit
+    Gitlab::CurrentSettings.repository_size_limit
   end
 
   def shared_runners_enabled?

app/models/note.rb

@@ -5,7 +5,6 @@ class Note < ActiveRecord::Base
   extend ActiveModel::Naming
   prepend EE::Note
 
-  include Gitlab::CurrentSettings
   include Participable
   include Mentionable
   include Elastic::NotesSearch
@@ -204,7 +203,7 @@ class Note < ActiveRecord::Base
   end
 
   def max_attachment_size
-    current_application_settings.max_attachment_size.megabytes.to_i
+    Gitlab::CurrentSettings.max_attachment_size.megabytes.to_i
   end
 
   def hook_attrs

app/models/project.rb

@@ -4,7 +4,6 @@ class Project < ActiveRecord::Base
   include Gitlab::ConfigHelper
   include Gitlab::ShellAdapter
   include Gitlab::VisibilityLevel
-  include Gitlab::CurrentSettings
   include AccessRequestable
   include Avatarable
   include CacheMarkdownField
@@ -26,7 +25,6 @@ class Project < ActiveRecord::Base
   prepend EE::Project
 
   extend Gitlab::ConfigHelper
-  extend Gitlab::CurrentSettings
 
   BoardLimitExceeded = Class.new(StandardError)
 
@@ -54,8 +52,8 @@ class Project < ActiveRecord::Base
   default_value_for :visibility_level, gitlab_config_features.visibility_level
   default_value_for :resolve_outdated_diff_discussions, false
   default_value_for :container_registry_enabled, gitlab_config_features.container_registry
-  default_value_for(:repository_storage) { current_application_settings.pick_repository_storage }
-  default_value_for(:shared_runners_enabled) { current_application_settings.shared_runners_enabled }
+  default_value_for(:repository_storage) { Gitlab::CurrentSettings.pick_repository_storage }
+  default_value_for(:shared_runners_enabled) { Gitlab::CurrentSettings.shared_runners_enabled }
   default_value_for :issues_enabled, gitlab_config_features.issues
   default_value_for :merge_requests_enabled, gitlab_config_features.merge_requests
   default_value_for :builds_enabled, gitlab_config_features.builds
@@ -495,14 +493,14 @@ class Project < ActiveRecord::Base
 
   def auto_devops_enabled?
     if auto_devops&.enabled.nil?
-      current_application_settings.auto_devops_enabled?
+      Gitlab::CurrentSettings.auto_devops_enabled?
     else
       auto_devops.enabled?
     end
   end
 
   def has_auto_devops_implicitly_disabled?
-    auto_devops&.enabled.nil? && !current_application_settings.auto_devops_enabled?
+    auto_devops&.enabled.nil? && !Gitlab::CurrentSettings.auto_devops_enabled?
   end
 
   def empty_repo?
@@ -1483,14 +1481,14 @@ class Project < ActiveRecord::Base
     # Ensure HEAD points to the default branch in case it is not master
     change_head(default_branch)
 
-    if current_application_settings.default_branch_protection != Gitlab::Access::PROTECTION_NONE && !ProtectedBranch.protected?(self, default_branch)
+    if Gitlab::CurrentSettings.default_branch_protection != Gitlab::Access::PROTECTION_NONE && !ProtectedBranch.protected?(self, default_branch)
       params = {
         name: default_branch,
         push_access_levels_attributes: [{
-          access_level: current_application_settings.default_branch_protection == Gitlab::Access::PROTECTION_DEV_CAN_PUSH ? Gitlab::Access::DEVELOPER : Gitlab::Access::MASTER
+          access_level: Gitlab::CurrentSettings.default_branch_protection == Gitlab::Access::PROTECTION_DEV_CAN_PUSH ? Gitlab::Access::DEVELOPER : Gitlab::Access::MASTER
         }],
         merge_access_levels_attributes: [{
-          access_level: current_application_settings.default_branch_protection == Gitlab::Access::PROTECTION_DEV_CAN_MERGE ? Gitlab::Access::DEVELOPER : Gitlab::Access::MASTER
+          access_level: Gitlab::CurrentSettings.default_branch_protection == Gitlab::Access::PROTECTION_DEV_CAN_MERGE ? Gitlab::Access::DEVELOPER : Gitlab::Access::MASTER
         }]
       }
 
@@ -1779,7 +1777,7 @@ class Project < ActiveRecord::Base
   end
 
   def use_hashed_storage
-    if self.new_record? && current_application_settings.hashed_storage_enabled
+    if self.new_record? && Gitlab::CurrentSettings.hashed_storage_enabled
       self.storage_version = LATEST_STORAGE_VERSION
     end
   end

app/models/project_services/kubernetes_service.rb

@@ -4,7 +4,6 @@
 # After we've migrated data, we'll remove KubernetesService. This would happen in a few months.
 # If you're modyfiyng this class, please note that you should update the same change in Clusters::Platforms::Kubernetes.
 class KubernetesService < DeploymentService
-  include Gitlab::CurrentSettings
   include Gitlab::Kubernetes
   include ReactiveCaching
 
@@ -233,7 +232,7 @@ class KubernetesService < DeploymentService
     {
       token: token,
       ca_pem: ca_pem,
-      max_session_time: current_application_settings.terminal_max_session_time
+      max_session_time: Gitlab::CurrentSettings.terminal_max_session_time
     }
   end
 

app/models/project_wiki.rb

@@ -4,7 +4,6 @@ class ProjectWiki
 
   # EE only modules
   include Elastic::WikiRepositoriesSearch
-  include Gitlab::CurrentSettings
 
   MARKUPS = {
     'Markdown' => :markdown,
@@ -204,7 +203,7 @@ class ProjectWiki
   # EE only
 
   def update_elastic_index
-    index_blobs if current_application_settings.elasticsearch_indexing?
+    index_blobs if Gitlab::CurrentSettings.elasticsearch_indexing?
   end
 
   def path_to_repo

app/models/protected_branch.rb

@@ -3,8 +3,6 @@ class ProtectedBranch < ActiveRecord::Base
   include ProtectedRef
   prepend EE::ProtectedRef
 
-  extend Gitlab::CurrentSettings
-
   protected_ref_access_levels :merge, :push
 
   # Check if branch name is marked as protected in the system
@@ -17,7 +15,7 @@ class ProtectedBranch < ActiveRecord::Base
   end
 
   def self.default_branch_protected?
-    current_application_settings.default_branch_protection == Gitlab::Access::PROTECTION_FULL ||
-      current_application_settings.default_branch_protection == Gitlab::Access::PROTECTION_DEV_CAN_MERGE
+    Gitlab::CurrentSettings.default_branch_protection == Gitlab::Access::PROTECTION_FULL ||
+      Gitlab::CurrentSettings.default_branch_protection == Gitlab::Access::PROTECTION_DEV_CAN_MERGE
   end
 end

app/models/snippet.rb

@@ -12,8 +12,6 @@ class Snippet < ActiveRecord::Base
   include Editable
   include Gitlab::SQL::Pattern
 
-  extend Gitlab::CurrentSettings
-
   cache_markdown_field :title, pipeline: :single_line
   cache_markdown_field :description
   cache_markdown_field :content
@@ -29,7 +27,7 @@ class Snippet < ActiveRecord::Base
     default_content_html_invalidator || file_name_changed?
   end
 
-  default_value_for(:visibility_level) { current_application_settings.default_snippet_visibility }
+  default_value_for(:visibility_level) { Gitlab::CurrentSettings.default_snippet_visibility }
 
   belongs_to :author, class_name: 'User'
   belongs_to :project

app/models/user.rb

@@ -2,10 +2,8 @@ require 'carrierwave/orm/activerecord'
 
 class User < ActiveRecord::Base
   extend Gitlab::ConfigHelper
-  extend Gitlab::CurrentSettings
 
   include Gitlab::ConfigHelper
-  include Gitlab::CurrentSettings
   include Gitlab::SQL::Pattern
   include AfterCommitQueue
   include Avatarable
@@ -32,7 +30,7 @@ class User < ActiveRecord::Base
   add_authentication_token_field :rss_token
 
   default_value_for :admin, false
-  default_value_for(:external) { current_application_settings.user_default_external }
+  default_value_for(:external) { Gitlab::CurrentSettings.user_default_external }
   default_value_for :can_create_group, gitlab_config.default_can_create_group
   default_value_for :can_create_team, false
   default_value_for :hide_no_ssh_key, false
@@ -678,11 +676,11 @@ class User < ActiveRecord::Base
   end
 
   def allow_password_authentication_for_web?
-    current_application_settings.password_authentication_enabled_for_web? && !ldap_user?
+    Gitlab::CurrentSettings.password_authentication_enabled_for_web? && !ldap_user?
   end
 
   def allow_password_authentication_for_git?
-    current_application_settings.password_authentication_enabled_for_git? && !ldap_user?
+    Gitlab::CurrentSettings.password_authentication_enabled_for_git? && !ldap_user?
   end
 
   def can_change_username?
@@ -810,7 +808,7 @@ class User < ActiveRecord::Base
     # without this safeguard!
     return unless has_attribute?(:projects_limit) && projects_limit.nil?
 
-    self.projects_limit = current_application_settings.default_projects_limit
+    self.projects_limit = Gitlab::CurrentSettings.default_projects_limit
   end
 
   def requires_ldap_check?
@@ -1237,7 +1235,7 @@ class User < ActiveRecord::Base
     else
       # Only revert these back to the default if they weren't specifically changed in this update.
       self.can_create_group = gitlab_config.default_can_create_group unless can_create_group_changed?
-      self.projects_limit = current_application_settings.default_projects_limit unless projects_limit_changed?
+      self.projects_limit = Gitlab::CurrentSettings.default_projects_limit unless projects_limit_changed?
     end
   end
 
@@ -1245,15 +1243,15 @@ class User < ActiveRecord::Base
     valid = true
     error = nil
 
-    if current_application_settings.domain_blacklist_enabled?
-      blocked_domains = current_application_settings.domain_blacklist
+    if Gitlab::CurrentSettings.domain_blacklist_enabled?
+      blocked_domains = Gitlab::CurrentSettings.domain_blacklist
       if domain_matches?(blocked_domains, email)
         error = 'is not from an allowed domain.'
         valid = false
       end
     end
 
-    allowed_domains = current_application_settings.domain_whitelist
+    allowed_domains = Gitlab::CurrentSettings.domain_whitelist
     unless allowed_domains.blank?
       if domain_matches?(allowed_domains, email)
         valid = true

app/services/akismet_service.rb

 class AkismetService
-  include Gitlab::CurrentSettings
-
   attr_accessor :owner, :text, :options
 
   def initialize(owner, text, options = {})
@@ -41,12 +39,12 @@ class AkismetService
   private
 
   def akismet_client
-    @akismet_client ||= ::Akismet::Client.new(current_application_settings.akismet_api_key,
+    @akismet_client ||= ::Akismet::Client.new(Gitlab::CurrentSettings.akismet_api_key,
                                               Gitlab.config.gitlab.url)
   end
 
   def akismet_enabled?
-    current_application_settings.akismet_enabled
+    Gitlab::CurrentSettings.akismet_enabled
   end
 
   def submit(type)

app/services/auth/container_registry_authentication_service.rb

 module Auth
   class ContainerRegistryAuthenticationService < BaseService
-    extend Gitlab::CurrentSettings
-
     AUDIENCE = 'container_registry'.freeze
 
     def execute(authentication_abilities:)
@@ -32,7 +30,7 @@ module Auth
     end
 
     def self.token_expire_at
-      Time.now + current_application_settings.container_registry_token_expire_delay.minutes
+      Time.now + Gitlab::CurrentSettings.container_registry_token_expire_delay.minutes
     end
 
     private

app/services/base_service.rb

 class BaseService
   include Gitlab::Allowable
-  include Gitlab::CurrentSettings
 
   attr_accessor :project, :current_user, :params
 

app/services/ci/register_job_service.rb

@@ -2,7 +2,6 @@ module Ci
   # This class responsible for assigning
   # proper pending build to runner on runner API request
   class RegisterJobService
-    include Gitlab::CurrentSettings
     prepend EE::Ci::RegisterJobService
 
     attr_reader :runner

app/services/git_push_service.rb

 class GitPushService < BaseService
   attr_accessor :push_data, :push_commits
-  include Gitlab::CurrentSettings
   include Gitlab::Access
 
   # The N most recent commits to process in a single push payload.
@@ -53,7 +52,7 @@ class GitPushService < BaseService
       update_gitattributes if default_branch?
     end
 
-    if current_application_settings.elasticsearch_indexing? && default_branch?
+    if Gitlab::CurrentSettings.elasticsearch_indexing? && default_branch?
       ElasticCommitIndexerWorker.perform_async(@project.id, params[:oldrev], params[:newrev])
     end
 

app/services/gravatar_service.rb

 class GravatarService
-  include Gitlab::CurrentSettings
-
   def execute(email, size = nil, scale = 2, username: nil)
-    return unless current_application_settings.gravatar_enabled?
+    return unless Gitlab::CurrentSettings.gravatar_enabled?
 
     identifier = email.presence || username.presence
     return unless identifier

app/services/projects/housekeeping_service.rb

@@ -7,8 +7,6 @@
 #
 module Projects
   class HousekeepingService < BaseService
-    include Gitlab::CurrentSettings
-
     # Timeout set to 24h
     LEASE_TIMEOUT = 86400
 
@@ -83,19 +81,19 @@ module Projects
     end
 
     def housekeeping_enabled?
-      current_application_settings.housekeeping_enabled
+      Gitlab::CurrentSettings.housekeeping_enabled
     end
 
     def gc_period
-      current_application_settings.housekeeping_gc_period
+      Gitlab::CurrentSettings.housekeeping_gc_period
     end
 
     def full_repack_period
-      current_application_settings.housekeeping_full_repack_period
+      Gitlab::CurrentSettings.housekeeping_full_repack_period
     end
 
     def repack_period
-      current_application_settings.housekeeping_incremental_repack_period
+      Gitlab::CurrentSettings.housekeeping_incremental_repack_period
     end
   end
 end

app/services/projects/update_pages_service.rb

 module Projects
   class UpdatePagesService < BaseService
-    include Gitlab::CurrentSettings
-
     BLOCK_SIZE = 32.kilobytes
     MAX_SIZE = 1.terabyte
     SITE_PATH = 'public/'.freeze
@@ -142,7 +140,7 @@ module Projects
     end
 
     def max_size
-      max_pages_size = current_application_settings.max_pages_size.megabytes
+      max_pages_size = Gitlab::CurrentSettings.max_pages_size.megabytes
 
       return MAX_SIZE if max_pages_size.zero?
 

app/services/projects/update_service.rb

@@ -44,7 +44,7 @@ module Projects
     def run_auto_devops_pipeline?
       return false if project.repository.gitlab_ci_yml || !project.auto_devops.previous_changes.include?('enabled')
 
-      project.auto_devops.enabled? || (project.auto_devops.enabled.nil? && current_application_settings.auto_devops_enabled?)
+      project.auto_devops.enabled? || (project.auto_devops.enabled.nil? && Gitlab::CurrentSettings.auto_devops_enabled?)
     end
 
     private

app/services/search/global_service.rb

 module Search
   class GlobalService
-    include Gitlab::CurrentSettings
-
     attr_accessor :current_user, :params
     attr_reader :default_project_filter
 
@@ -11,7 +9,7 @@ module Search
     end
 
     def execute
-      if current_application_settings.elasticsearch_search?
+      if Gitlab::CurrentSettings.elasticsearch_search?
         Gitlab::Elastic::SearchResults.new(current_user, params[:search], elastic_projects, elastic_global)
       else
         Gitlab::SearchResults.new(current_user, projects, params[:search],
@@ -41,7 +39,7 @@ module Search
     def scope
       @scope ||= begin
         allowed_scopes = %w[issues merge_requests milestones]
-        allowed_scopes += %w[wiki_blobs blobs commits] if current_application_settings.elasticsearch_search?
+        allowed_scopes += %w[wiki_blobs blobs commits] if Gitlab::CurrentSettings.elasticsearch_search?
 
         allowed_scopes.delete(params[:scope]) { 'projects' }
       end

app/services/search/project_service.rb

 module Search
   class ProjectService
-    include Gitlab::CurrentSettings
-
     attr_accessor :project, :current_user, :params
 
     def initialize(project, user, params)
@@ -9,7 +7,7 @@ module Search
     end
 
     def execute
-      if current_application_settings.elasticsearch_search?
+      if Gitlab::CurrentSettings.elasticsearch_search?
         Gitlab::Elastic::ProjectSearchResults.new(current_user,
                                                   params[:search],
                                                   project.id,

app/services/submit_usage_ping_service.rb

@@ -11,10 +11,8 @@ class SubmitUsagePingService
                percentage_projects_prometheus_active leader_service_desk_issues instance_service_desk_issues
                percentage_service_desk_issues].freeze
 
-  include Gitlab::CurrentSettings
-
   def execute
-    return false unless current_application_settings.usage_ping_enabled?
+    return false unless Gitlab::CurrentSettings.usage_ping_enabled?
 
     response = HTTParty.post(
       URL,

app/services/upload_service.rb

 class UploadService
-  include Gitlab::CurrentSettings
-
   def initialize(model, file, uploader_class = FileUploader)
     @model, @file, @uploader_class = model, file, uploader_class
   end
@@ -17,6 +15,6 @@ class UploadService
   private
 
   def max_attachment_size
-    current_application_settings.max_attachment_size.megabytes.to_i
+    Gitlab::CurrentSettings.max_attachment_size.megabytes.to_i
   end
 end

app/services/users/build_service.rb

 module Users
   class BuildService < BaseService
     prepend ::EE::Users::BuildService
-    include Gitlab::CurrentSettings
 
     def initialize(current_user, params = {})
       @current_user = current_user
@@ -35,7 +34,7 @@ module Users
     private
 
     def can_create_user?
-      (current_user.nil? && current_application_settings.allow_signup?) || current_user&.admin?
+      (current_user.nil? && Gitlab::CurrentSettings.allow_signup?) || current_user&.admin?
     end
 
     # Allowed params for creating a user (admins only)
@@ -103,7 +102,7 @@ module Users
     end
 
     def skip_user_confirmation_email_from_setting
-      !current_application_settings.send_user_confirmation_email
+      !Gitlab::CurrentSettings.send_user_confirmation_email
     end
   end
 end

app/views/admin/conversational_development_index/show.html.haml

@@ -6,7 +6,7 @@
     = render 'callout'
 
   .prepend-top-default
-  - if !current_application_settings.usage_ping_enabled
+  - if !Gitlab::CurrentSettings.usage_ping_enabled
     = render 'disabled'
   - elsif @metric.blank?
     = render 'no_data'

app/views/admin/dashboard/index.html.haml

@@ -102,10 +102,10 @@
                 = boolean_to_icon Gitlab::IncomingEmail.enabled?
 
             - elastic = "Elasticsearch"
-            %p{ "aria-label" => "#{elastic}: status " + (current_application_settings.elasticsearch_search? ? "on" : "off") }
+            %p{ "aria-label" => "#{elastic}: status " + (Gitlab::CurrentSettings.elasticsearch_search? ? "on" : "off") }
               = elastic
               %span.light.pull-right
-                = boolean_to_icon current_application_settings.elasticsearch_search?
+                = boolean_to_icon Gitlab::CurrentSettings.elasticsearch_search?
             - geo = link_to 'Geo', admin_geo_nodes_path
             %p{ "aria-label" => "#{geo}: status " + (Gitlab::Geo.enabled? ? "on" : "off") }
               = geo
@@ -134,7 +134,7 @@
           .well-segment.admin-well
             %h4
               Components
-              - if current_application_settings.version_check_enabled
+              - if Gitlab::CurrentSettings.version_check_enabled
                 .pull-right
                   = version_status_badge
             %p

app/views/admin/groups/_form.html.haml

@@ -4,7 +4,7 @@
 
   = render 'shared/repository_size_limit_setting', form: f, type: :group
 
-  - if current_application_settings.should_check_namespace_plan?
+  - if Gitlab::CurrentSettings.should_check_namespace_plan?
     = render 'admin/namespace_plan', f: f
 
   .form-group.group-description-holder

app/views/admin/health_check/show.html.haml

@@ -8,7 +8,7 @@
     .pull-left
       %p
     #{ s_('HealthCheck|Access token is') }
-    %code#health-check-token= current_application_settings.health_check_access_token
+    %code#health-check-token= Gitlab::CurrentSettings.health_check_access_token
     .prepend-top-10
       = button_to _("Reset health check access token"), reset_health_check_token_admin_application_settings_path,
         method: :put, class: 'btn btn-default',
@@ -18,14 +18,14 @@
     = link_to s_('More information is available|here'), help_page_path('user/admin_area/monitoring/health_check')
     %ul
       %li
-        %code= readiness_url(token: current_application_settings.health_check_access_token)
+        %code= readiness_url(token: Gitlab::CurrentSettings.health_check_access_token)
       %li
-        %code= liveness_url(token: current_application_settings.health_check_access_token)
+        %code= liveness_url(token: Gitlab::CurrentSettings.health_check_access_token)
       %li
-        %code= metrics_url(token: current_application_settings.health_check_access_token)
+        %code= metrics_url(token: Gitlab::CurrentSettings.health_check_access_token)
       - if Gitlab::Geo.secondary?
         %li
-          %code= health_check_url(token: current_application_settings.health_check_access_token, checks: :geo)
+          %code= health_check_url(token: Gitlab::CurrentSettings.health_check_access_token, checks: :geo)
   %hr
   .panel.panel-default
     .panel-heading

app/views/admin/runners/index.html.haml

@@ -36,7 +36,7 @@
           data: { confirm: _("Are you sure you want to reset registration token?") }
 
   = render partial: 'ci/runner/how_to_setup_runner',
-           locals: { registration_token: current_application_settings.runners_registration_token,
+           locals: { registration_token: Gitlab::CurrentSettings.runners_registration_token,
                      type: 'shared' }
 
   .append-bottom-20.clearfix

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

@@ -42,7 +42,7 @@
 
     = render partial: 'access_levels', locals: { f: f }
 
-    - if current_application_settings.should_check_namespace_plan?
+    - if Gitlab::CurrentSettings.should_check_namespace_plan?
       = f.fields_for :namespace do |namespace_form|
         %fieldset
           %legend Licensed Features

app/views/devise/confirmations/almost_there.haml

@@ -4,9 +4,9 @@
   %p.lead.append-bottom-20
     Please check your email to confirm your account
   %hr
-- if current_application_settings.after_sign_up_text.present?
+- if Gitlab::CurrentSettings.after_sign_up_text.present?
   .well-confirmation.text-center
-    = markdown_field(current_application_settings, :after_sign_up_text)
+    = markdown_field(Gitlab::CurrentSettings, :after_sign_up_text)
 %p.text-center
   No confirmation email received? Please check your spam folder or
 .append-bottom-20.prepend-top-20.text-center

app/views/help/index.html.haml

 = webpack_bundle_tag 'docs'
 
 %div
-- if current_application_settings.help_page_text.present?
-  = markdown(current_application_settings.help_page_text)
+- if Gitlab::CurrentSettings.help_page_text.present?
+  = markdown(Gitlab::CurrentSettings.help_page_text)
   %hr
 
 %h1
@@ -14,7 +14,7 @@
     = version_status_badge
   %hr
 
-- unless current_application_settings.help_page_hide_commercial_content?
+- unless Gitlab::CurrentSettings.help_page_hide_commercial_content?
   %p.slead
     GitLab is open source software to collaborate on code.
     %br
@@ -46,6 +46,6 @@
         %li
           %button.btn-blank.btn-link.js-trigger-shortcut{ type: 'button' }
             Use shortcuts
-        - unless current_application_settings.help_page_hide_commercial_content?
+        - unless Gitlab::CurrentSettings.help_page_hide_commercial_content?
           %li= link_to 'Get a support subscription', 'https://about.gitlab.com/pricing/'
           %li= link_to 'Compare GitLab editions', 'https://about.gitlab.com/features/#compare'

app/views/koding/index.html.haml

@@ -3,4 +3,4 @@
     = icon('circle', class: 'cgreen')
     Integration is active for
     = link_to koding_project_url, target: '_blank', rel: 'noopener noreferrer' do
-      #{current_application_settings.koding_url}
+      #{Gitlab::CurrentSettings.koding_url}

app/views/layouts/_head.html.haml

@@ -41,7 +41,7 @@
   = webpack_bundle_tag "webpack_runtime"
   = webpack_bundle_tag "common"
   = webpack_bundle_tag "main"
-  = webpack_bundle_tag "raven" if current_application_settings.clientside_sentry_enabled
+  = webpack_bundle_tag "raven" if Gitlab::CurrentSettings.clientside_sentry_enabled
   = webpack_bundle_tag "test" if Rails.env.test?
 
   - if content_for?(:page_specific_javascripts)

app/views/layouts/devise.html.haml

@@ -26,13 +26,13 @@
                   Perform code reviews and enhance collaboration with merge requests.
                   Each project can also have an issue tracker and a wiki.
 
-              - if current_application_settings.sign_in_text.present?
-                = markdown_field(current_application_settings, :sign_in_text)
-              - if current_application_settings.help_text.present?
+              - if Gitlab::CurrentSettings.sign_in_text.present?
+                = markdown_field(Gitlab::CurrentSettings.current_application_settings, :sign_in_text)
+              - if Gitlab::CurrentSettings.help_text.present?
                 %h3 Need help?
                 %hr
                 %p.slead
-                  = markdown(current_application_settings.help_text)
+                  = markdown(Gitlab::CurrentSettings.help_text)
 
       %hr.footer-fixed
       .container.footer-container

app/views/layouts/nav/sidebar/_profile.html.haml

@@ -28,7 +28,7 @@
             = link_to profile_account_path do
               %strong.fly-out-top-item-name
                 #{ _('Account') }
-      - if current_application_settings.should_check_namespace_plan?
+      - if Gitlab::CurrentSettings.should_check_namespace_plan?
         = nav_link(controller: :billings) do
           = link_to profile_billings_path do
             .nav-icon-container
@@ -40,7 +40,7 @@
               = link_to profile_billings_path do
                 %strong.fly-out-top-item-name
                   #{ _('Billing') }
-      - if current_application_settings.user_oauth_applications?
+      - if Gitlab::CurrentSettings.user_oauth_applications?
         = nav_link(controller: 'oauth/applications') do
           = link_to applications_profile_path do
             .nav-icon-container

app/views/notify/_note_email.html.haml

@@ -22,7 +22,7 @@
         - else
           commented on a #{link_to 'discussion', @target_url}
 
-- elsif current_application_settings.email_author_in_body
+- elsif Gitlab::CurrentSettings.email_author_in_body
   %p.details
     #{link_to @note.author_name, user_url(@note.author)} commented:
 

app/views/notify/_note_email.text.erb

@@ -12,7 +12,7 @@
 <%=   ":" -%>
 
 
-<%  elsif current_application_settings.email_author_in_body -%>
+<%  elsif Gitlab::CurrentSettings.email_author_in_body -%>
 <%=     "#{@note.author_name} commented:" -%>
 
 

app/views/notify/new_issue_email.html.haml

-- if current_application_settings.email_author_in_body
+- if Gitlab::CurrentSettings.email_author_in_body
   %p.details
     #{link_to @issue.author_name, user_url(@issue.author)} created an issue:
 

app/views/notify/new_merge_request_email.html.haml

-- if current_application_settings.email_author_in_body
+- if Gitlab::CurrentSettings.email_author_in_body
   %p.details
     #{link_to @merge_request.author_name, user_url(@merge_request.author)} created a merge request:
 

app/views/notify/new_user_email.html.haml

 %p
   Hi #{@user['name']}!
 %p
-  - if current_application_settings.allow_signup?
+  - if Gitlab::CurrentSettings.allow_signup?
     Your account has been created successfully.
   - else
     The Administrator created an account for you. Now you are a member of the company GitLab application.

app/views/projects/_export.html.haml

-- return unless current_application_settings.project_export_enabled?
+- return unless Gitlab::CurrentSettings.project_export_enabled?
 
 - project = local_assigns.fetch(:project)
 - expanded = Rails.env.test?

app/views/projects/commits/_commit.html.haml

@@ -6,7 +6,7 @@
 - link = commit_path(project, commit, merge_request: merge_request)
 - cache_key = [project.full_path,
                commit.id,
-               current_application_settings,
+               Gitlab::CurrentSettings.current_application_settings,
                @path.presence,
                current_controller?(:commits),
                merge_request&.iid,

app/views/projects/pipelines_settings/_show.html.haml

@@ -31,7 +31,7 @@
             .radio
               = form.label :enabled_ do
                 = form.radio_button :enabled, ''
-                %strong Instance default (#{current_application_settings.auto_devops_enabled? ? 'enabled' : 'disabled'})
+                %strong Instance default (#{Gitlab::CurrentSettings.auto_devops_enabled? ? 'enabled' : 'disabled'})
                 %br
                 %span.descr
                   Follow the instance default to either have Auto DevOps enabled or disabled when there is no project specific <code>.gitlab-ci.yml</code>.

app/views/projects/runners/_shared_runners.html.haml

 %h3 Shared Runners
 
 .bs-callout.bs-callout-warning.shared-runners-description
-  - if current_application_settings.shared_runners_text.present?
-    = markdown_field(current_application_settings, :shared_runners_text)
+  - if Gitlab::CurrentSettings.shared_runners_text.present?
+    = markdown_field(Gitlab::CurrentSettings.current_application_settings, :shared_runners_text)
   - else
     GitLab Shared Runners execute code of different projects on the same Runner
     unless you configure GitLab Runner Autoscale with MaxBuilds 1 (which it is

app/views/search/_category.html.haml

@@ -78,7 +78,7 @@
           Milestones
           %span.badge
             = limited_count(@search_results.limited_milestones_count)
-      - if current_application_settings.elasticsearch_search?
+      - if Gitlab::CurrentSettings.elasticsearch_search?
         %li{ class: active_when(@scope == 'blobs') }
           = link_to search_filter_path(scope: 'blobs') do
             Code

app/views/search/_form.html.haml

@@ -13,7 +13,7 @@
     - unless params[:snippets].eql? 'true'
       = render 'filter'
     = button_tag "Search", class: "btn btn-success btn-search"
-  - if current_application_settings.elasticsearch_search?
+  - if Gitlab::CurrentSettings.elasticsearch_search?
     .help-block
       = link_to 'Advanced search functionality', help_page_path('user/search/advanced_search_syntax.md'), target: '_blank'
       is enabled.

app/workers/git_garbage_collect_worker.rb

 class GitGarbageCollectWorker
   include ApplicationWorker
-  include Gitlab::CurrentSettings
 
   sidekiq_options retry: false
 
@@ -102,7 +101,7 @@ class GitGarbageCollectWorker
   end
 
   def bitmaps_enabled?
-    current_application_settings.housekeeping_bitmaps_enabled
+    Gitlab::CurrentSettings.housekeeping_bitmaps_enabled
   end
 
   def git(write_bitmaps:)

config/initializers/elastic_client_setup.rb

@@ -13,8 +13,6 @@ module Elasticsearch
       cattr_accessor :cached_config
 
       module ClassMethods
-        include Gitlab::CurrentSettings
-
         # Override the default ::Elasticsearch::Model::Client implementation to
         # return a client configured from application settings. All including
         # classes will use the same instance, which is refreshed automatically
@@ -28,7 +26,7 @@ module Elasticsearch
           store = ::Elasticsearch::Model::Client
 
           store::CLIENT_MUTEX.synchronize do
-            config = current_application_settings.elasticsearch_config
+            config = Gitlab::CurrentSettings.elasticsearch_config
 
             if store.cached_client.nil? || config != store.cached_config
               store.cached_client = ::Gitlab::Elastic::Client.build(config)

ee/app/controllers/profiles/slacks_controller.rb

@@ -11,7 +11,7 @@ class Profiles::SlacksController < Profiles::ApplicationController
 
   def slack_link
     project = disabled_projects.find(params[:project_id])
-    link = add_to_slack_link(project, current_application_settings.slack_app_id)
+    link = add_to_slack_link(project, Gitlab::CurrentSettings.slack_app_id)
 
     render json: { add_to_slack_link: link }
   end

ee/app/helpers/license_helper.rb

@@ -101,7 +101,7 @@ module LicenseHelper
   end
 
   def show_advanced_search_promotion?
-    !current_application_settings.should_check_namespace_plan? && show_promotions? && show_callout?('promote_advanced_search_dismissed') && !License.feature_available?(:elastic_search)
+    !Gitlab::CurrentSettings.should_check_namespace_plan? && show_promotions? && show_callout?('promote_advanced_search_dismissed') && !License.feature_available?(:elastic_search)
   end
 
   extend self

ee/app/models/concerns/elastic/application_search.rb

@@ -4,7 +4,6 @@ module Elastic
 
     included do
       include Elasticsearch::Model
-      include Gitlab::CurrentSettings
 
       index_name [Rails.application.class.parent_name.downcase, Rails.env].join('-')
 
@@ -39,13 +38,13 @@ module Elastic
         }
 
       after_commit on: :create do
-        if current_application_settings.elasticsearch_indexing? && self.searchable?
+        if Gitlab::CurrentSettings.elasticsearch_indexing? && self.searchable?
           ElasticIndexerWorker.perform_async(:index, self.class.to_s, self.id)
         end
       end
 
       after_commit on: :update do
-        if current_application_settings.elasticsearch_indexing? && self.searchable?
+        if Gitlab::CurrentSettings.elasticsearch_indexing? && self.searchable?
           ElasticIndexerWorker.perform_async(
             :update,
             self.class.to_s,
@@ -56,7 +55,7 @@ module Elastic
       end
 
       after_commit on: :destroy do
-        if current_application_settings.elasticsearch_indexing? && self.searchable?
+        if Gitlab::CurrentSettings.elasticsearch_indexing? && self.searchable?
           ElasticIndexerWorker.perform_async(
             :delete,
             self.class.to_s,

ee/app/models/ee/group.rb

@@ -60,7 +60,7 @@ module EE
     end
 
     def project_creation_level
-      super || current_application_settings.default_project_creation
+      super || ::Gitlab::CurrentSettings.default_project_creation
     end
   end
 end

ee/app/models/ee/namespace.rb

@@ -108,7 +108,7 @@ module EE
 
     def actual_shared_runners_minutes_limit
       shared_runners_minutes_limit ||
-        current_application_settings.shared_runners_minutes
+        ::Gitlab::CurrentSettings.shared_runners_minutes
     end
 
     def shared_runners_minutes_limit_enabled?
@@ -170,7 +170,7 @@ module EE
     def load_feature_available(feature)
       globally_available = License.feature_available?(feature)
 
-      if current_application_settings.should_check_namespace_plan?
+      if ::Gitlab::CurrentSettings.should_check_namespace_plan?
         globally_available && feature_available_in_plan?(feature)
       else
         globally_available

ee/app/models/ee/project.rb

@@ -15,7 +15,7 @@ module EE
 
       before_validation :mark_remote_mirrors_for_removal
 
-      before_save :set_override_pull_mirror_available, unless: -> { ::Gitlab::CurrentSettings.current_application_settings.mirror_available }
+      before_save :set_override_pull_mirror_available, unless: -> { ::Gitlab::CurrentSettings.mirror_available }
       after_save :create_mirror_data, if: ->(project) { project.mirror? && project.mirror_changed? }
       after_save :destroy_mirror_data, if: ->(project) { !project.mirror? && project.mirror_changed? }
 
@@ -449,12 +449,12 @@ module EE
 
     def remote_mirror_available?
       remote_mirror_available_overridden ||
-        current_application_settings.mirror_available
+        ::Gitlab::CurrentSettings.mirror_available
     end
 
     def pull_mirror_available?
       pull_mirror_available_overridden ||
-        current_application_settings.mirror_available
+        ::Gitlab::CurrentSettings.mirror_available
     end
 
     private
@@ -477,7 +477,7 @@ module EE
     def load_licensed_feature_available(feature)
       globally_available = License.feature_available?(feature)
 
-      if namespace && current_application_settings.should_check_namespace_plan?
+      if namespace && ::Gitlab::CurrentSettings.should_check_namespace_plan?
         globally_available &&
           (public? && namespace.public? || namespace.feature_available_in_plan?(feature))
       else

ee/app/models/geo/deleted_project.rb

 class Geo::DeletedProject
-  include Gitlab::CurrentSettings
-
   attr_reader :id, :name, :disk_path
 
   def initialize(id:, name:, disk_path:, repository_storage:)
@@ -17,7 +15,7 @@ class Geo::DeletedProject
   end
 
   def repository_storage
-    @repository_storage ||= current_application_settings.pick_repository_storage
+    @repository_storage ||= Gitlab::CurrentSettings.pick_repository_storage
   end
 
   def repository_storage_path

ee/app/services/ee/ci/register_job_service.rb

@@ -36,7 +36,7 @@ module EE
       end
 
       def application_shared_runners_minutes
-        current_application_settings.shared_runners_minutes
+        ::Gitlab::CurrentSettings.shared_runners_minutes
       end
 
       def shared_runner_build_limits_feature_enabled?

ee/app/services/geo/node_status_fetch_service.rb

 module Geo
   class NodeStatusFetchService
-    include Gitlab::CurrentSettings
     include HTTParty
 
     def call(geo_node)
@@ -48,7 +47,7 @@ module Geo
     end
 
     def timeout
-      current_application_settings.geo_status_timeout
+      Gitlab::CurrentSettings.geo_status_timeout
     end
   end
 end

ee/app/services/projects/slack_application_install_service.rb

@@ -53,8 +53,8 @@ module Projects
 
     def exchange_slack_token
       HTTParty.get(SLACK_EXCHANGE_TOKEN_URL, query: {
-        client_id: current_application_settings.slack_app_id,
-        client_secret: current_application_settings.slack_app_secret,
+        client_id: Gitlab::CurrentSettings.slack_app_id,
+        client_secret: Gitlab::CurrentSettings.slack_app_secret,
         redirect_uri: slack_auth_project_settings_slack_url(project),
         code: params[:code]
       })

ee/app/views/admin/_namespace_plan_badge.html.haml

 - namespace = local_assigns[:namespace]
-- if current_application_settings.should_check_namespace_plan? && namespace && namespace.plan.present?
+- if Gitlab::CurrentSettings.should_check_namespace_plan? && namespace && namespace.plan.present?
   %span.plan-badge.has-tooltip{ data: { plan: namespace.plan.name }, title: "#{namespace.plan.title} Plan" }
     = custom_icon('icon_premium')

ee/app/views/admin/_namespace_plan_info.html.haml

 - namespace = local_assigns[:namespace]
-- if current_application_settings.should_check_namespace_plan? && namespace
+- if Gitlab::CurrentSettings.should_check_namespace_plan? && namespace
   %li
     %span.light Plan:
     - if namespace.plan.present?

ee/app/views/groups/ee/_settings_nav.html.haml

@@ -22,7 +22,7 @@
       %span
         Pipelines quota
 
-- if current_application_settings.should_check_namespace_plan?
+- if Gitlab::CurrentSettings.should_check_namespace_plan?
   = nav_link(path: 'billings#index') do
     = link_to group_billings_path(@group), title: 'Billing' do
       %span

ee/app/views/namespaces/_shared_runners_minutes_setting.html.haml

@@ -7,5 +7,5 @@
       %span.help-block#shared_runners_minutes_limit_help_block
         Set the maximum number of pipeline minutes that a group can use on shared Runners per month.
         Set 0 for unlimited.
-        Set empty to inherit the global setting of #{current_application_settings.shared_runners_minutes}.
+        Set empty to inherit the global setting of #{Gitlab::CurrentSettings.shared_runners_minutes}.
         = link_to icon('question-circle'), help_page_path("user/admin_area/settings/continuous_integration", anchor: "shared-runners-build-minutes-quota"), target: '_blank'

ee/app/views/notify/add_merge_request_approver_email.html.haml

-- if current_application_settings.email_author_in_body
+- if Gitlab::CurrentSettings.email_author_in_body
   %div
     #{link_to @updated_by.name, user_url(@updated_by)} added you as an approver for:
 %p.details

ee/app/views/notify/service_desk_new_note_email.html.haml

-- if current_application_settings.email_author_in_body
+- if Gitlab::CurrentSettings.email_author_in_body
   %div
     #{link_to @note.author_name, user_url(@note.author)} wrote:
 %div

ee/app/views/profiles/preferences/_ide.html.haml

@@ -4,7 +4,7 @@
       Web IDE (Beta)
     %p
       Enable the new web IDE on this device to make it possible to open and edit multiple files with a single commit.
-      - if current_application_settings.should_check_namespace_plan?
+      - if Gitlab::CurrentSettings.should_check_namespace_plan?
         Available for public GitLab.com projects or those using Gold.
   .col-lg-8.multi-file-editor-options
     = label_tag do

ee/app/views/shared/ee/_import_form.html.haml

@@ -7,7 +7,7 @@
     .help-block
       Automatically update this project's branches and tags from the upstream
       repository every hour. The Git LFS objects will not be synced.
-    - if current_application_settings.should_check_namespace_plan?
+    - if Gitlab::CurrentSettings.should_check_namespace_plan?
       .help-block
         Mirroring will only be available if the feature is included in the plan of the selected group or user.
 

ee/app/views/shared/promotions/_promote_advanced_search.html.haml

@@ -7,7 +7,7 @@
         = custom_icon('icon_search_avatar')
       .user-callout-copy
         %h5
-          - if current_application_settings.should_check_namespace_plan?
+          - if Gitlab::CurrentSettings.should_check_namespace_plan?
             = _('Upgrade your plan to activate Advanced Global Search.')
           - else
             = _('Improve search with Advanced Global Search and GitLab Enterprise Edition.')

ee/app/views/shared/promotions/_promote_audit_events.html.haml

@@ -3,7 +3,7 @@
     = custom_icon('icon_audit_events_purple')
   .user-callout-copy
     %h4
-      - if current_application_settings.should_check_namespace_plan?
+      - if Gitlab::CurrentSettings.should_check_namespace_plan?
         Upgrade your plan to activate Audit Events.
       - else
         Track your project with Audit Events.

ee/app/views/shared/promotions/_promote_burndown_charts.html.haml

@@ -7,7 +7,7 @@
         = custom_icon('icon_burndown_charts')
       .user-callout-copy
         %h4
-          - if current_application_settings.should_check_namespace_plan?
+          - if Gitlab::CurrentSettings.should_check_namespace_plan?
             Upgrade your plan to improve milestones with Burndown Charts.
           - else
             Improve milestones with Burndown Charts.

ee/app/views/shared/promotions/_promote_contribution_analytics.html.haml

@@ -3,7 +3,7 @@
     = custom_icon('icon_contribution_analytics')
   .user-callout-copy
     %h4
-      - if current_application_settings.should_check_namespace_plan?
+      - if Gitlab::CurrentSettings.should_check_namespace_plan?
         = _('Upgrade your plan to activate Contribution Analytics.')
       - else
         = _('Track activity with Contribution Analytics.')

ee/app/views/shared/promotions/_promote_csv_export.html.haml

@@ -9,7 +9,7 @@
             = custom_icon('icon_export_issues')
         .user-callout-copy
           %h4
-            - if current_application_settings.should_check_namespace_plan?
+            - if Gitlab::CurrentSettings.should_check_namespace_plan?
               Upgrade your plan to export issues.
             - else
               Export issues with GitLab Enterprise Edition.

ee/app/views/shared/promotions/_promote_group_webhooks.html.haml

@@ -3,7 +3,7 @@
     = custom_icon('icon_group_webhook')
   .user-callout-copy
     %h4
-      - if current_application_settings.should_check_namespace_plan?
+      - if Gitlab::CurrentSettings.should_check_namespace_plan?
         = _('Upgrade your plan to activate Group Webhooks.')
       - else
         = _('Add Group Webhooks and GitLab Enterprise Edition.')

ee/app/views/shared/promotions/_promote_issue_board.html.haml

@@ -4,7 +4,7 @@
   .svg-container.center
     = custom_icon('icon_issue_board')
   %p
-    - if current_application_settings.should_check_namespace_plan?
+    - if Gitlab::CurrentSettings.should_check_namespace_plan?
       = _('Upgrade your plan to improve Issue boards.')
     - else
       = _('Improve Issue boards with GitLab Enterprise Edition.')

ee/app/views/shared/promotions/_promote_issue_weights.html.haml

@@ -16,7 +16,7 @@
             %i.fa.fa-times.dropdown-menu-close-icon{ "aria-hidden" => "true", "data-hidden" => "true" }
         %div
           %p
-            - if current_application_settings.should_check_namespace_plan?
+            - if Gitlab::CurrentSettings.should_check_namespace_plan?
               = _('Upgrade your plan to activate Issue weight.')
             - else
               = _('Improve issues management with Issue weight and GitLab Enterprise Edition.')

ee/app/views/shared/promotions/_promote_mr_features.html.haml

@@ -5,7 +5,7 @@
         = icon('times', class: 'dismiss-icon', 'aria-hidden' => 'true')
       .user-callout-copy
         %h4
-          - if current_application_settings.should_check_namespace_plan?
+          - if Gitlab::CurrentSettings.should_check_namespace_plan?
             Upgrade your plan to improve Merge Requests.
           - else
             Improve Merge Requests and customer support with GitLab Enterprise Edition.

ee/app/views/shared/promotions/_promote_repository_features.html.haml

@@ -7,7 +7,7 @@
         = custom_icon('icon_push_rules')
       .user-callout-copy
         %h4
-          - if current_application_settings.should_check_namespace_plan?
+          - if Gitlab::CurrentSettings.should_check_namespace_plan?
             Upgrade your plan to improve repositories.
           - else
             Improve repositories with GitLab Enterprise Edition.

ee/app/views/shared/promotions/_promote_servicedesk.html.haml

@@ -6,7 +6,7 @@
       = custom_icon('icon_service_desk')
     .user-callout-copy
       %h4
-        - if current_application_settings.should_check_namespace_plan?
+        - if Gitlab::CurrentSettings.should_check_namespace_plan?
           Upgrade your plan to activate Service Desk.
         - else
           Improve customer support with GitLab Service Desk.

ee/app/views/shared/promotions/_promote_squash_commits.html.haml

@@ -4,7 +4,7 @@
       = icon('times', class: 'dismiss-icon', 'aria-hidden' => 'true')
     .user-callout-copy
       %h4
-        - if current_application_settings.should_check_namespace_plan?
+        - if Gitlab::CurrentSettings.should_check_namespace_plan?
           Upgrade your plan to improve Merge Requests with Squash Commit.
         - else
           Improve Merge Requests with Squash Commit and GitLab Enterprise Edition.

ee/app/views/shared/promotions/_promotion_link_project.html.haml

 - short_form = local_assigns.fetch :short_form, false
-- if current_application_settings.should_check_namespace_plan?
+- if Gitlab::CurrentSettings.should_check_namespace_plan?
   - namespace = @project&.namespace || @group
   - if can?(current_user, :admin_namespace, namespace)
     = link_to 'Upgrade your plan', upgrade_plan_url, class: 'btn btn-primary'