Running a Ruby Program as a Windows Service?

Question

Is it possible to run a ruby application as a Windows Service? I see that there is a related question which discusses running a Java Application as a Windows Service, how c

Answer 1

When trying the Win32Utils one really need to studie the doc and look over the net before finding some simple working example. This seems to work today 2008-10-02:

gem install win32-service

Update 2012-11-20: According to https://stackoverflow.com/users/1374569/paul the register_bar.rb should now be

Service.create( :service_name => 'some_service',
                :host => nil,
                :service_type       => Service::WIN32_OWN_PROCESS,
                :description        => 'A custom service I wrote just for fun',
                :start_type         => Service::AUTO_START,
                :error_control      => Service::ERROR_NORMAL,
                :binary_path_name   => 'c:\usr\ruby\bin\rubyw.exe -C c:\tmp\ bar.rb',
               :load_order_group   => 'Network',
               :dependencies       => ['W32Time','Schedule'],
               :display_name       => 'This is some service'       )

---

bar.rb

create the application/daemon

LOG_FILE = 'C:\\test.log'

begin
  require "rubygems"
  require 'win32/daemon'

  include Win32

  class DemoDaemon < Daemon

    def service_main
      while running?
      sleep 10
      File.open("c:\\test.log", "a"){ |f| f.puts "Service is running #{Time.now}" } 
    end
  end 

    def service_stop
      File.open("c:\\test.log", "a"){ |f| f.puts "***Service stopped #{Time.now}" }
      exit! 
    end
  end

  DemoDaemon.mainloop
rescue Exception => err
  File.open(LOG_FILE,'a+'){ |f| f.puts " ***Daemon failure #{Time.now} err=#{err} " }
  raise
end 

---

bar.rb is the service but we must create and register first! this can be done with sc create some_service

but if we are going to use ruby and win32utils we should do a

register_bar.rb

 require "rubygems"
require "win32/service"
   include Win32



   # Create a new service
   Service.create('some_service', nil,
      :service_type       => Service::WIN32_OWN_PROCESS,
      :description        => 'A custom service I wrote just for fun',
      :start_type         => Service::AUTO_START,
      :error_control      => Service::ERROR_NORMAL,
      :binary_path_name   => 'c:\usr\ruby\bin\rubyw.exe -C c:\tmp\ bar.rb',
      :load_order_group   => 'Network',
      :dependencies       => ['W32Time','Schedule'],
     
      :display_name       => 'This is some service'
   )

---

Note, there is a space between c:\tmp\ bar.rb in 'c:\usr\ruby\bin\rubyw.exe -C c:\tmp\ bar.rb'

Run ruby register_bar.rb and now one can start the service either from the windows service control panel or

sc start some_service

and watch c:test.log be filled with Service is running Thu Oct 02 22:06:47 +0200 2008

For the simple of have something to work with it is easier to remove the service register and create a new one instead of modifying a existing one

unregister_bar.rb

 require "rubygems"
    require "win32/service"
       include Win32
    
    Service.delete("some_service")

---

Credits to the people http://rubypane.blogspot.com/2008/05/windows-service-using-win32-service-and_29.html

http://rubyforge.org/docman/view.php/85/595/service.html