From: david <davidhooey@...>
Date: 2008-04-24T04:15:06+09:00
Subject: Re: win32-service-0.6.1 using a Rails Model

On Apr 19, 4:28 pm, Gordon Thiesfeld <gthiesf...@gmail.com> wrote:
> On Sat, Apr 19, 2008 at 11:30 AM, david <davidho...@gmail.com> wrote:
> > Windows 2000 SP4
> >  Ruby 1.8.6
> >  Rail 1.2.6
>
> >  I'm trying to create a Rail application for our internal use to
> >  provide a one stop access to services. I'm currently trying to get the
> >  Server.status, Service.stop and Service.start to work through a model
> >  inRails. The Service.* functions work well through Ruby itself, but
> >  seems to have problem through aRailsModel. I've been trying to
> >  display the status of the MySQL service.
>
> >  *** Model
>
> >  require "win32/service"
>
> >  class Servicectl
>
> >         include Win32
>
> >         attr_reader :state
>
> >     def servicestatus(service_name, host_name)
> >         @state = Service.status(service_name, host_name)
> >     end
>
> >     def servicestart(service_name, host_name)
> >         Service.start(service_name, host_name)
> >     end
>
> >     def servicestop(service_name, host_name)
> >         Service.stop(service_name, host_name)
> >     end
>
> >  end
>
> >  *** Controller
>
> >  class ServicectlController < ApplicationController
>
> >         def show
> >                 service_state = Servicectl.new
> >                 service_state.servicestatus("MySQL",nil)
> >                 @status = service_state.state
> >         end
>
> >  end
>
> >  *** Show View
>
> >  <%= @status %>
>
> >  The following error is posted to the development.log.
>
> >  Processing ServicectlController#show (for 127.0.0.1 at 2008-04-19
> >  11:53:46) [GET]
> >   Session ID: d446bf0a6cad825dbf5d1a78e6853706
> >   Parameters: {"action"=>"show", "controller"=>"servicectl"}
>
> >  Win32::Service::Error (T):
> >     c:/ruby/lib/ruby/gems/1.8/gems/win32-service-0.6.1-x86-mswin32-60/
> >  lib/win32/service.rb:920:in `status'
> >     C:/Shared/SourceCode/Rails/sandbox/app/models/servicectl.rb:14:in
> >  `servicestatus'
> >     C:/Shared/SourceCode/Rails/sandbox/app/controllers/
> >  servicectl_controller.rb:9:in `show'
> >     c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.6/lib/
> >  action_controller/base.rb:1101:in `send'
> >     c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.6/lib/
> >  action_controller/base.rb:1101:in `perform_action_without_filters'
> >     c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.6/lib/
> >  action_controller/filters.rb:696:in `call_filters'
> >     c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.6/lib/
> >  action_controller/filters.rb:688:in `perform_action_without_benchmark'
> >     c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.6/lib/
> >  action_controller/benchmarking.rb:66:in
> >  `perform_action_without_rescue'
> >     c:/ruby/lib/ruby/1.8/benchmark.rb:293:in `measure'
> >     c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.6/lib/
> >  action_controller/benchmarking.rb:66:in
> >  `perform_action_without_rescue'
> >     c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.6/lib/
> >  action_controller/rescue.rb:83:in `perform_action'
> >     c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.6/lib/
> >  action_controller/base.rb:435:in `send'
> >     c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.6/lib/
> >  action_controller/base.rb:435:in `process_without_filters'
> >     c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.6/lib/
> >  action_controller/filters.rb:684:in
> >  `process_without_session_management_support'
> >     c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.6/lib/
> >  action_controller/session_management.rb:114:in `process'
> >     c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.6/lib/
> >  action_controller/base.rb:334:in `process'
> >     c:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.6/lib/dispatcher.rb:41:in
> >  `dispatch'
> >     c:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.6/lib/webrick_server.rb:
> >  113:in `handle_dispatch'
> >     c:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.6/lib/webrick_server.rb:
> >  79:in `service'
> >     c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
> >     c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
> >     c:/ruby/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
> >     c:/ruby/lib/ruby/1.8/webrick/server.rb:162:in `start'
> >     c:/ruby/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
> >     c:/ruby/lib/ruby/1.8/webrick/server.rb:95:in `start'
> >     c:/ruby/lib/ruby/1.8/webrick/server.rb:92:in `each'
> >     c:/ruby/lib/ruby/1.8/webrick/server.rb:92:in `start'
> >     c:/ruby/lib/ruby/1.8/webrick/server.rb:23:in `start'
> >     c:/ruby/lib/ruby/1.8/webrick/server.rb:82:in `start'
> >     c:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.6/lib/webrick_server.rb:
> >  63:in `dispatch'
> >     c:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.6/lib/commands/servers/
> >  webrick.rb:59
> >     c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
> >  `gem_original_require'
> >     c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
> >  `require'
> >     c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.4/lib/
> >  active_support/dependencies.rb:495:in `require'
> >     c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.4/lib/
> >  active_support/dependencies.rb:342:in `new_constants_in'
> >     c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.4/lib/
> >  active_support/dependencies.rb:495:in `require'
> >     c:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.6/lib/commands/server.rb:
> >  39
> >     c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
> >  `gem_original_require'
> >     c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
> >  `require'
> >     script/server:3
>
> >  I have no idea why it is failing, I'm hoping someone might have a clue
> >  for me.
>
> >  For reference this is the working code which works well though Ruby
> >  itself.
>
> >  *** service.rb
>
> >  require "win32/service"
>
> >  class ServiceController
>
> >         include Win32
>
> >         attr_accessor :state
>
> >     def status(service_name, host_name)
> >         @state = Service.status(service_name, host_name)
> >     end
>
> >     def start(service_name, host_name)
> >         Service.start(service_name, host_name)
> >     end
>
> >     def stop(service_name, host_name)
> >         Service.stop(service_name, host_name)
> >     end
>
> >  end
>
> >  *** Output:
>
> >  C:\Shared\SourceCode\Ruby>ruby service.rb
> >  running
>
> >  Thanks for all your time,
> >  Dave
>
> I can't offer help with win32-service, but I could suggest an
> alternative.  You could do what you're wanting to do with Windows
> services via WMI, and I've written a ruby-wmi gem that has a syntax
> similar to Activerecord.  Myrailsis rusty, but here's an idea.
>
> *** Model
>
> #nothing in here. ;)
>
> *** Controller
>
> require 'ruby-wmi'
>
> class ServicesController < ApplicationController
>   # GET /services
>   # GET /services.xml
>   def index
>     @services = WMI::Win32_Service.find(:all)
>
>     respond_to do |format|
>       format.html # index.html.erb
>       format.xml  { render :xml => @services }
>     end
>   end
>
>   # GET /services/1
>   # GET /services/1.xml
>   def show
>    puts params
>    service = WMI::Win32_Service.find(:first, :conditions => {:name =>
> params['id']})
>    @status = service.state
>   end
>
>   def stop
>     service = WMI::Win32_Service.find(:first, :conditions => {:name =>
> params['id']})
>     service.stopservice
>   end
>
>   def start
>     service = WMI::Win32_Service.find(:first, :conditions => {:name =>
> params['id']})
>     service.startservice
>   end
>
> end
>
> *** Index view
>
> <table>
>   <tr>
>   </tr>
>
> <% for service in @services %>
>   <tr>
>     <td><%= link_to service.name, service.name %></td>
>     <td><%= service.state %></td>
>     <td><%= service.startmode %></td>
>   </tr>
> <% end %>
> </table>
>
> *** Show view
>
> <%= @status %>

Thanks Gordon, I will give that option a try.

Dave