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 113
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 37
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 146
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 131
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 67
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
# File lib/chef/provider/service/debian.rb, line 28
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 99
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 162
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