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require 'rails/engine/configuration'

module Rails
  class Application
    class Configuration < ::Rails::Engine::Configuration
      include ::Rails::Configuration::Deprecated

      attr_accessor :cache_classes, :cache_store, :colorize_logging,
                    :consider_all_requests_local, :dependency_loading,
                    :filter_parameters, :log_level, :logger, :metals,
                    :plugins, :preload_frameworks, :reload_engines, :reload_plugins,
                    :serve_static_assets, :time_zone, :whiny_nils

      def initialize(*)
        super
        @colorize_logging = true
        @filter_parameters = []
        @dependency_loading = true
        @serve_static_assets = true
        @time_zone = "UTC"
      end

      def paths
        @paths ||= begin
          paths = super
          paths.app.controllers << builtin_controller if builtin_controller
          paths.config.database "config/database.yml"
          paths.config.environment "config/environments", :glob => "#{Rails.env}.rb"
          paths.log "log/#{Rails.env}.log"
          paths.tmp "tmp"
          paths.tmp.cache "tmp/cache"
          paths.vendor "vendor", :load_path => true
          paths.vendor.plugins "vendor/plugins"

          if File.exists?("#{root}/test/mocks/#{Rails.env}")
            ActiveSupport::Deprecation.warn "\"RAILS_ROOT/test/mocks/#{Rails.env}\" won't be added " <<
              "automatically to load paths anymore in future releases"
            paths.mocks_path "test/mocks", :load_path => true, :glob => Rails.env
          end

          paths
        end
      end

      # Enable threaded mode. Allows concurrent requests to controller actions and
      # multiple database connections. Also disables automatic dependency loading
      # after boot, and disables reloading code on every request, as these are
      # fundamentally incompatible with thread safety.
      def threadsafe!
        self.preload_frameworks = true
        self.cache_classes = true
        self.dependency_loading = false
        self.action_controller.allow_concurrency = true if respond_to?(:action_controller)
        self
      end

      # Loads and returns the contents of the #database_configuration_file. The
      # contents of the file are processed via ERB before being sent through
      # YAML::load.
      def database_configuration
        require 'erb'
        YAML::load(ERB.new(IO.read(paths.config.database.to_a.first)).result)
      end

      def cache_store
        @cache_store ||= begin
          if File.exist?("#{root}/tmp/cache/")
            [ :file_store, "#{root}/tmp/cache/" ]
          else
            :memory_store
          end
        end
      end

      def builtin_controller
        File.join(RAILTIES_PATH, "builtin", "rails_info") if Rails.env.development?
      end

      def log_level
        @log_level ||= Rails.env.production? ? :info : :debug
      end
    end
  end
end
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