add start|stop|restart|run to crono executable

this is done using daemonize gem, but it is not breaking the old
interface. But sets a deprected comment to the old one daemonize
process.

lib/crono/cli.rb

@@ -7,6 +7,8 @@ module Crono
     include Singleton
     include Logging
 
+    COMMANDS = %w(start stop restart run zap reload status)
+
     attr_accessor :config
 
     def initialize
@@ -16,16 +18,21 @@ module Crono
 
     def run
       parse_options(ARGV)
+      parse_command(ARGV)
 
-      setup_log
+      setup_log 
 
-      write_pid
+      write_pid unless config.daemonize
       load_rails
       Cronotab.process(File.expand_path(config.cronotab))
       print_banner
 
       check_jobs
-      start_working_loop
+      if config.daemonize
+        start_working_loop_in_daemon
+      else
+        start_working_loop
+      end
     end
 
     private
@@ -33,13 +40,15 @@ module Crono
     def setup_log
       if config.daemonize
         self.logfile = config.logfile
-        daemonize
+      elsif config.deprecated_daemonize
+        self.logfile = config.logfile
+        deprecated_daemonize
       else
         self.logfile = STDOUT
       end
     end
 
-    def daemonize
+    def deprecated_daemonize
       ::Process.daemon(true, true)
 
       [$stdout, $stderr].each do |io|
@@ -71,7 +80,7 @@ module Crono
       ENV['RACK_ENV'] = ENV['RAILS_ENV'] = config.environment
       require 'rails'
       require File.expand_path('config/environment.rb')
-      ::Rails.application.eager_load!
+      ::Rails.application.eager_load! if config.daemonize
     end
 
     def check_jobs
@@ -79,6 +88,30 @@ module Crono
       logger.error "You have no jobs in you cronotab file #{config.cronotab}"
     end
 
+    def start_working_loop_in_daemon
+      unless ENV['RAILS_ENV'] == 'test'
+        begin
+          require 'daemons'
+        rescue LoadError
+          raise "You need to add gem 'daemons' to your Gemfile if you wish to use it."
+        end
+      end
+      Daemons.run_proc(config.process_name, dir: config.piddir, dir_mode: :normal, monitor: config.monitor, ARGV: @argv) do |*_argv|
+        Dir.chdir(root)
+        Crono.logger = Logger.new(config.logfile)
+
+        start_working_loop
+      end
+    end
+
+    def root
+      @root ||= rails_root_defined? ? ::Rails.root : DIR_PWD
+    end
+
+    def rails_root_defined?
+      defined?(::Rails.root)
+    end
+
     def start_working_loop
       loop do
         next_time, jobs = Crono.scheduler.next_jobs
@@ -88,8 +121,8 @@ module Crono
     end
 
     def parse_options(argv)
-      OptionParser.new do |opts|
-        opts.banner = "Usage: crono [options]"
+      @argv = OptionParser.new do |opts|
+        opts.banner = "Usage: crono [options] start|stop|restart|run"
 
         opts.on("-C", "--cronotab PATH", "Path to cronotab file (Default: #{config.cronotab})") do |cronotab|
           config.cronotab = cronotab
@@ -103,8 +136,20 @@ module Crono
           config.pidfile = pidfile
         end
 
-        opts.on("-d", "--[no-]daemonize", "Daemonize process (Default: #{config.daemonize})") do |daemonize|
-          config.daemonize = daemonize
+        opts.on("--piddir PATH", "Path to piddir (Default: #{config.piddir})") do |piddir|
+          config.piddir = piddir
+        end
+
+        opts.on("-N", "--process_name name", "Name of the process (Default: #{config.process_name})") do |process_name|
+          config.process_name = process_name
+        end
+
+        opts.on("-d", "--[no-]daemonize", "Deprecated! Instead use crono [start|stop|restart] without this option; Daemonize process (Default: #{config.daemonize})") do |daemonize|
+          config.deprecated_daemonize = daemonize
+        end
+
+        opts.on("-m", "--monitor", "Start monitor process for a deamon (Default #{config.monitor})") do
+          config.monitor = true
         end
 
         opts.on '-e', '--environment ENV', "Application environment (Default: #{config.environment})" do |env|
@@ -112,5 +157,12 @@ module Crono
         end
       end.parse!(argv)
     end
+
+    def parse_command(argv)
+      if COMMANDS.include? argv[0]
+        config.daemonize = true
+      end
+    end
+
   end
 end

lib/crono/config.rb

@@ -4,18 +4,31 @@ module Crono
     CRONOTAB  = 'config/cronotab.rb'
     LOGFILE   = 'log/crono.log'
     PIDFILE   = 'tmp/pids/crono.pid'
+    PIDDIR    = 'tmp/pids'
+    PROCESS_NAME = 'crono'
 
-    attr_accessor :cronotab, :logfile, :pidfile, :daemonize, :environment
+    attr_accessor :cronotab, :logfile, :pidfile, :piddir, :process_name,
+                  :monitor, :daemonize, :deprecated_daemonize, :environment
 
     def initialize
       self.cronotab = CRONOTAB
       self.logfile  = LOGFILE
+      self.piddir = PIDDIR
+      self.process_name = PROCESS_NAME
       self.daemonize = false
+      self.deprecated_daemonize = false
+      self.monitor = false
       self.environment = ENV['RAILS_ENV'] || ENV['RACK_ENV'] || 'development'
     end
 
+    def pidfile=(pidfile)
+      @pidfile = pidfile
+      self.process_name = Pathname.new(pidfile).basename(".*").to_s
+      self.piddir = Pathname.new(pidfile).dirname.to_s 
+    end
+
     def pidfile
-      @pidfile || (daemonize ? PIDFILE : nil)
+      @pidfile || (deprecated_daemonize ? PIDFILE : nil)
     end
   end
 end