module Gitlab module CurrentSettings extend self def current_application_settings if RequestStore.active? RequestStore.fetch(:current_application_settings) { ensure_application_settings! } else ensure_application_settings! end end delegate :sidekiq_throttling_enabled?, to: :current_application_settings def fake_application_settings(defaults = ::ApplicationSetting.defaults) FakeApplicationSettings.new(defaults) end private def ensure_application_settings! return in_memory_application_settings if ENV['IN_MEMORY_APPLICATION_SETTINGS'] == 'true' cached_application_settings || uncached_application_settings end def cached_application_settings begin ::ApplicationSetting.cached rescue ::Redis::BaseError, ::Errno::ENOENT, ::Errno::EADDRNOTAVAIL # In case Redis isn't running or the Redis UNIX socket file is not available end end def uncached_application_settings return fake_application_settings unless connect_to_db? db_settings = ::ApplicationSetting.current # If there are pending migrations, it's possible there are columns that # need to be added to the application settings. To prevent Rake tasks # and other callers from failing, use any loaded settings and return # defaults for missing columns. if ActiveRecord::Migrator.needs_migration? defaults = ::ApplicationSetting.defaults defaults.merge!(db_settings.attributes.symbolize_keys) if db_settings.present? return fake_application_settings(defaults) end return db_settings if db_settings.present? ::ApplicationSetting.create_from_defaults || in_memory_application_settings end # rubocop:disable Cop/ModuleWithInstanceVariables def in_memory_application_settings @in_memory_application_settings ||= ::ApplicationSetting.new(::ApplicationSetting.defaults) rescue ActiveRecord::StatementInvalid, ActiveRecord::UnknownAttributeError # In case migrations the application_settings table is not created yet, # we fallback to a simple OpenStruct fake_application_settings end def connect_to_db? # When the DBMS is not available, an exception (e.g. PG::ConnectionBad) is raised active_db_connection = ActiveRecord::Base.connection.active? rescue false active_db_connection && ActiveRecord::Base.connection.table_exists?('application_settings') rescue ActiveRecord::NoDatabaseError false end end end