# class Chef::Provider::Service::Debian

### Constants

UPDATE_RC_D_ENABLED_MATCHES
UPDATE_RC_D_PRIORITIES

### Public Instance Methods

action_enable() click to toggle source

Override method from parent to ensure priority is up-to-date

    # File lib/chef/provider/service/debian.rb, line 115
    def action_enable
      if @new_resource.priority.nil?
        priority_ok = true
      else
        priority_ok = @current_resource.priority == @new_resource.priority
      end
      if @current_resource.enabled and priority_ok
        Chef::Log.debug("#{@new_resource} already enabled - nothing to do")
      else
        converge_by("enable service #{@new_resource}") do
          enable_service
          Chef::Log.info("#{@new_resource} enabled")
        end
      end
      load_new_resource_state
      @new_resource.enabled(true)
    end

define_resource_requirements() click to toggle source

    # File lib/chef/provider/service/debian.rb, line 39
    def define_resource_requirements
      # do not call super here, inherit only shared_requirements
      shared_resource_requirements
      requirements.assert(:all_actions) do |a|
        update_rcd = "/usr/sbin/update-rc.d"
        a.assertion { ::File.exists? update_rcd }
        a.failure_message Chef::Exceptions::Service, "#{update_rcd} does not exist!"
        # no whyrun recovery - this is a base system component of debian
        # distros and must be present
      end

      requirements.assert(:all_actions) do |a|
        a.assertion { @priority_success }
        a.failure_message  Chef::Exceptions::Service, "/usr/sbin/update-rc.d -n -f #{@current_resource.service_name} failed - #{@rcd_status.inspect}"
        # This can happen if the service is not yet installed,so we'll fake it.
        a.whyrun ["Unable to determine priority of service, assuming service would have been correctly installed earlier in the run.",
                  "Assigning temporary priorities to continue.",
                  "If this service is not properly installed prior to this point, this will fail."] do
          temp_priorities = {"6"=>[:stop, "20"],
            "0"=>[:stop, "20"],
            "1"=>[:stop, "20"],
            "2"=>[:start, "20"],
            "3"=>[:start, "20"],
            "4"=>[:start, "20"],
            "5"=>[:start, "20"]}
          @current_resource.priority(temp_priorities)
        end
      end
    end

disable_service() click to toggle source

    # File lib/chef/provider/service/debian.rb, line 148
    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() click to toggle source

    # File lib/chef/provider/service/debian.rb, line 133
    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() click to toggle source

    # File lib/chef/provider/service/debian.rb, line 69
    def get_priority
      priority = {}

      @rcd_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

      # Reduce existing priority back to an integer if appropriate, picking
      # runlevel 2 as a baseline
      if priority[2] && [2..5].all? { |runlevel| priority[runlevel] == priority[2] }
        priority = priority[2].last
      end

      unless @rcd_status.exitstatus == 0
        @priority_success = false
      end
      priority
    end

load_current_resource() click to toggle source
Calls superclass method Chef::Provider::Service::Simple#load_current_resource

    # File lib/chef/provider/service/debian.rb, line 30
    def load_current_resource
      super
      @priority_success = true
      @rcd_status = nil
      @current_resource.priority(get_priority)
      @current_resource.enabled(service_currently_enabled?(@current_resource.priority))
      @current_resource
    end

service_currently_enabled?(priority) click to toggle source

    # File lib/chef/provider/service/debian.rb, line 101
    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 %w[ 1 2 3 4 5 S ].include?(runlevel) && arguments[0] == :start
          enabled = true
        end
      }

      enabled
    end

set_priority() click to toggle source

    # File lib/chef/provider/service/debian.rb, line 164
    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