1 files changed, 160 insertions, 0 deletions
diff --git a/railties/lib/rails/commands/server/server_command.rb b/railties/lib/rails/commands/server/server_command.rb
new file mode 100644
index 0000000000..14cf72f483
--- /dev/null
+++ b/railties/lib/rails/commands/server/server_command.rb
@@ -0,0 +1,160 @@
+require "fileutils"
+require "optparse"
+require "action_dispatch"
+require "rails"
+require "rails/dev_caching"
+
+module Rails
+  class Server < ::Rack::Server
+    class Options
+      DEFAULT_PID_PATH = File.expand_path("tmp/pids/server.pid").freeze
+
+      def parse!(args)
+        args, options = args.dup, {}
+
+        option_parser(options).parse! args
+
+        options[:log_stdout] = options[:daemonize].blank? && (options[:environment] || Rails.env) == "development"
+        options[:server]     = args.shift
+        options
+      end
+
+      def option_parser(options) # :nodoc:
+        OptionParser.new do |opts|
+          opts.banner = "Usage: rails server [puma, thin etc] [options]"
+
+          opts.separator ""
+          opts.separator "Options:"
+
+          opts.on("-p", "--port=port", Integer,
+                  "Runs Rails on the specified port.", "Default: 3000") { |v| options[:Port] = v }
+          opts.on("-b", "--binding=IP", String,
+                  "Binds Rails to the specified IP.", "Default: localhost") { |v| options[:Host] = v }
+          opts.on("-c", "--config=file", String,
+                  "Uses a custom rackup configuration.") { |v| options[:config] = v }
+          opts.on("-d", "--daemon", "Runs server as a Daemon.") { options[:daemonize] = true }
+          opts.on("-e", "--environment=name", String,
+                  "Specifies the environment to run this server under (test/development/production).",
+                  "Default: development") { |v| options[:environment] = v }
+          opts.on("-P", "--pid=pid", String,
+                  "Specifies the PID file.",
+                  "Default: tmp/pids/server.pid") { |v| options[:pid] = v }
+          opts.on("-C", "--[no-]dev-caching",
+                  "Specifies whether to perform caching in development.",
+                  "true or false") { |v| options[:caching] = v }
+
+          opts.separator ""
+
+          opts.on("-h", "--help", "Shows this help message.") { puts opts; exit }
+        end
+      end
+    end
+
+    def initialize(*)
+      super
+      set_environment
+    end
+
+    # TODO: this is no longer required but we keep it for the moment to support older config.ru files.
+    def app
+      @app ||= begin
+        app = super
+        app.respond_to?(:to_app) ? app.to_app : app
+      end
+    end
+
+    def opt_parser
+      Options.new
+    end
+
+    def set_environment
+      ENV["RAILS_ENV"] ||= options[:environment]
+    end
+
+    def start
+      print_boot_information
+      trap(:INT) { exit }
+      create_tmp_directories
+      setup_dev_caching
+      log_to_stdout if options[:log_stdout]
+
+      super
+    ensure
+      # The '-h' option calls exit before @options is set.
+      # If we call 'options' with it unset, we get double help banners.
+      puts "Exiting" unless @options && options[:daemonize]
+    end
+
+    def middleware
+      Hash.new([])
+    end
+
+    def default_options
+      super.merge(
+        Port:               ENV.fetch("PORT", 3000).to_i,
+        Host:               ENV.fetch("HOST", "localhost").dup,
+        DoNotReverseLookup: true,
+        environment:        (ENV["RAILS_ENV"] || ENV["RACK_ENV"] || "development").dup,
+        daemonize:          false,
+        caching:            nil,
+        pid:                Options::DEFAULT_PID_PATH,
+        restart_cmd:        restart_command)
+    end
+
+    private
+      def setup_dev_caching
+        if options[:environment] == "development"
+          Rails::DevCaching.enable_by_argument(options[:caching])
+        end
+      end
+
+      def print_boot_information
+        url = "#{options[:SSLEnable] ? 'https' : 'http'}://#{options[:Host]}:#{options[:Port]}"
+        puts "=> Booting #{ActiveSupport::Inflector.demodulize(server)}"
+        puts "=> Rails #{Rails.version} application starting in #{Rails.env} on #{url}"
+        puts "=> Run `rails server -h` for more startup options"
+      end
+
+      def create_tmp_directories
+        %w(cache pids sockets).each do |dir_to_make|
+          FileUtils.mkdir_p(File.join(Rails.root, "tmp", dir_to_make))
+        end
+      end
+
+      def log_to_stdout
+        wrapped_app # touch the app so the logger is set up
+
+        console = ActiveSupport::Logger.new(STDOUT)
+        console.formatter = Rails.logger.formatter
+        console.level = Rails.logger.level
+
+        unless ActiveSupport::Logger.logger_outputs_to?(Rails.logger, STDOUT)
+          Rails.logger.extend(ActiveSupport::Logger.broadcast(console))
+        end
+      end
+
+      def restart_command
+        "bin/rails server #{ARGV.join(' ')}"
+      end
+  end
+
+  module Command
+    class ServerCommand < Base
+      def help # :nodoc:
+        puts Rails::Server::Options.new.option_parser(Hash.new)
+      end
+
+      def perform
+        set_application_directory!
+
+        Rails::Server.new.tap do |server|
+          # Require application after server sets environment to propagate
+          # the --environment option.
+          require APP_PATH
+          Dir.chdir(Rails.application.root)
+          server.start
+        end
+      end
+    end
+  end
+end