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Chef::Provider::Service::Debian

Public Instance Methods

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 123
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 108
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

  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 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 95
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() click to toggle source
# File lib/chef/provider/service/debian.rb, line 139
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

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