Class: Chef::Provider::Service::Debian

Inherits:
Init show all
Defined in:
lib/chef/provider/service/debian.rb

Constant Summary collapse

UPDATE_RC_D_ENABLED_MATCHES = 
/\/rc[\dS].d\/S|not installed/i
UPDATE_RC_D_PRIORITIES = 
/\/rc([\dS]).d\/([SK])(\d\d)/i

Instance Attribute Summary

Attributes inherited from Chef::Provider

#current_resource, #new_resource, #run_context

Instance Method Summary collapse

Methods inherited from Init

#initialize, #reload_service, #restart_service, #start_service, #stop_service

Methods inherited from Simple

#ps_cmd, #reload_service, #restart_service, #start_service, #stop_service

Methods inherited from Chef::Provider::Service

#action_disable, #action_enable, #action_reload, #action_restart, #action_start, #action_stop, #initialize, #reload_service, #restart_service, #start_service, #stop_service

Methods included from Mixin::Command

#chdir_or_tmpdir, #handle_command_failures, #not_if, #only_if, #output_of_command, #run_command, #run_command_with_systems_locale

Methods included from Mixin::Command::Windows

#popen4

Methods included from Mixin::Command::Unix

#popen4

Methods inherited from Chef::Provider

#action_nothing, build_from_file, #cookbook_name, #initialize, #node, #resource_collection

Methods included from Mixin::ConvertToClassName

#convert_to_class_name, #convert_to_snake_case, #filename_to_qualified_string, #snake_case_basename

Methods included from Mixin::RecipeDefinitionDSLCore

#method_missing

Methods included from Mixin::Language

#data_bag, #data_bag_item, #platform?, #search, #value_for_platform

Constructor Details

This class inherits a constructor from Chef::Provider::Service::Init

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Chef::Mixin::RecipeDefinitionDSLCore

Instance Method Details

#assert_update_rcd_available ⇒ Object 



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# File 'lib/chef/provider/service/debian.rb', line 38

def assert_update_rcd_available
  unless ::File.exists? "/usr/sbin/update-rc.d"
    raise Chef::Exceptions::Service, "/usr/sbin/update-rc.d does not exist!"
  end
end

#disable_service ⇒ Object 



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# File 'lib/chef/provider/service/debian.rb', line 101

def disable_service()
  if @new_resource.priority.is_a? Integer
    # Stop processes in reverse order of start using '100 - start_priority'
    run_command(:command => "/usr/sbin/update-rc.d -f #{@new_resource.service_name} remove")
    run_command(:command => "/usr/sbin/update-rc.d -f #{@new_resource.service_name} stop #{100 - @new_resource.priority} 2 3 4 5 .")
  elsif @new_resource.priority.is_a? Hash
    # we call the same command regardless of we're enabling or disabling  
    # users passing a Hash are responsible for setting their own stop priorities
    set_priority()
  else 
    # no priority, using '100 - 20 (update-rc.d default)' to stop in reverse order of start
    run_command(:command => "/usr/sbin/update-rc.d -f #{@new_resource.service_name} remove")
    run_command(:command => "/usr/sbin/update-rc.d -f #{@new_resource.service_name} stop 80 2 3 4 5 .")
  end
end

#enable_service ⇒ Object 



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# File 'lib/chef/provider/service/debian.rb', line 86

def enable_service()
  if @new_resource.priority.is_a? Integer
    run_command(:command => "/usr/sbin/update-rc.d -f #{@new_resource.service_name} remove")
    run_command(:command => "/usr/sbin/update-rc.d #{@new_resource.service_name} defaults #{@new_resource.priority} #{100 - @new_resource.priority}")
  elsif @new_resource.priority.is_a? Hash
    # we call the same command regardless of we're enabling or disabling  
    # users passing a Hash are responsible for setting their own start priorities
    set_priority()
  else # No priority, go with update-rc.d defaults
    run_command(:command => "/usr/sbin/update-rc.d -f #{@new_resource.service_name} remove")
    run_command(:command => "/usr/sbin/update-rc.d #{@new_resource.service_name} defaults")
  end

end

#get_priority ⇒ Object 



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# File 'lib/chef/provider/service/debian.rb', line 44

def get_priority
  assert_update_rcd_available
  priority = {}

  status = popen4("/usr/sbin/update-rc.d -n -f #{@current_resource.service_name} remove") do |pid, stdin, stdout, stderr|

    [stdout, stderr].each do |iop|
      iop.each_line do |line|
        if UPDATE_RC_D_PRIORITIES =~ line
          # priority[runlevel] = [ S|K, priority ] 
          # S = Start, K = Kill
          # debian runlevels: 0 Halt, 1 Singleuser, 2 Multiuser, 3-5 == 2, 6 Reboot
          priority[$1] = [($2 == "S" ? :start : :stop), $3]
        end
        if line =~ UPDATE_RC_D_ENABLED_MATCHES
          enabled = true
        end
      end
    end
  end

  unless status.exitstatus == 0
    raise Chef::Exceptions::Service, "/usr/sbin/update-rc.d -n -f #{@current_resource.service_name} failed - #{status.inspect}"
  end
  priority
end

#load_current_resource ⇒ Object 



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# File 'lib/chef/provider/service/debian.rb', line 30

def load_current_resource
  super

  @current_resource.priority(get_priority)
  @current_resource.enabled(service_currently_enabled?(@current_resource.priority))
  @current_resource
end

#service_currently_enabled?(priority) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/provider/service/debian.rb', line 71

def service_currently_enabled?(priority)
  enabled = false

  priority.each { |runlevel, arguments|
    Chef::Log.debug("#{@new_resource} runlevel #{runlevel}, action #{arguments[0]}, priority #{arguments[1]}")
    
    # if we are in a update-rc.d default startup runlevel && we start in this runlevel
    if (2..5).include?(runlevel.to_i) && arguments[0] == :start
      enabled = true
    end
  }

  enabled
end

#set_priority ⇒ Object 



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# File 'lib/chef/provider/service/debian.rb', line 117

def set_priority()
  args = ""
  @new_resource.priority.each do |level, o|
    action = o[0]
    priority = o[1]
    args += "#{action} #{priority} #{level} . "
  end
  run_command(:command => "/usr/sbin/update-rc.d -f #{@new_resource.service_name} remove")
  run_command(:command => "/usr/sbin/update-rc.d #{@new_resource.service_name} #{args}")
end