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 =
%r{/rc[\dS].d/S|not installed}i.freeze
UPDATE_RC_D_PRIORITIES =
%r{/rc([\dS]).d/([SK])(\d\d)}i.freeze

Instance Attribute Summary

Attributes inherited from Init

#init_command

Attributes inherited from Simple

#status_load_success

Attributes inherited from Chef::Provider

#action, #after_resource, #current_resource, #logger, #new_resource, #recipe_name, #run_context

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Init

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

Methods inherited from Simple

#reload_service, #restart_service, #shared_resource_requirements, #start_service, #stop_service

Methods inherited from Chef::Provider::Service

#initialize, #load_new_resource_state, #mask_service, #reload_service, #restart_service, #shared_resource_requirements, #start_service, #stop_service, #supports, #unmask_service, #user_services_requirements

Methods included from Chef::Platform::ServiceHelpers

#config_for_service, #service_resource_providers

Methods inherited from Chef::Provider

action, #action_nothing, #check_resource_semantics!, #cleanup_after_converge, #compile_and_converge_action, #converge_by, #converge_if_changed, #cookbook_name, #description, #events, include_resource_dsl?, include_resource_dsl_module, #initialize, #introduced, #load_after_resource, #node, #process_resource_requirements, provides, provides?, #requirements, #resource_collection, #resource_updated?, #run_action, #set_updated_status, use, use_inline_resources, #validate_required_properties!, #whyrun_mode?, #whyrun_supported?

Methods included from Mixin::LazyModuleInclude

#descendants, #include, #included

Methods included from Mixin::PowershellOut

#powershell_out, #powershell_out!

Methods included from Mixin::WindowsArchitectureHelper

#assert_valid_windows_architecture!, #disable_wow64_file_redirection, #forced_32bit_override_required?, #is_i386_process_on_x86_64_windows?, #node_supports_windows_architecture?, #node_windows_architecture, #restore_wow64_file_redirection, #valid_windows_architecture?, #with_os_architecture, #wow64_architecture_override_required?, #wow64_directory

Methods included from Mixin::PowershellExec

#powershell_exec, #powershell_exec!

Methods included from DSL::Powershell

#ps_credential

Methods included from DSL::RegistryHelper

#registry_data_exists?, #registry_get_subkeys, #registry_get_values, #registry_has_subkeys?, #registry_key_exists?, #registry_value_exists?

Methods included from DSL::ChefVault

#chef_vault, #chef_vault_item, #chef_vault_item_for_environment

Methods included from DSL::DataQuery

#data_bag, #data_bag_item, #search, #tagged?

Methods included from EncryptedDataBagItem::CheckEncrypted

#encrypted?

Methods included from DSL::PlatformIntrospection

#older_than_win_2012_or_8?, #platform?, #platform_family?, #value_for_platform, #value_for_platform_family

Methods included from Mixin::Provides

#provided_as, #provides, #provides?

Methods included from Mixin::DescendantsTracker

#descendants, descendants, #direct_descendants, direct_descendants, #find_descendants_by_name, find_descendants_by_name, #inherited, store_inherited

Methods included from DSL::Recipe

#exec, #have_resource_class_for?, #resource_class_for

Methods included from DSL::Definitions

add_definition, #evaluate_resource_definition, #has_resource_definition?

Methods included from DSL::Resources

add_resource_dsl, remove_resource_dsl

Methods included from DSL::Cheffish

load_cheffish

Methods included from DSL::RebootPending

#reboot_pending?

Methods included from DSL::IncludeRecipe

#include_recipe, #load_recipe

Methods included from Mixin::NotifyingBlock

#notifying_block, #subcontext_block

Methods included from DSL::DeclareResource

#build_resource, #declare_resource, #delete_resource, #delete_resource!, #edit_resource, #edit_resource!, #find_resource, #find_resource!, #resources, #with_run_context

Constructor Details

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

Class Method Details

.supports?(resource, action) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'lib/chef/provider/service/debian.rb', line 32

def self.supports?(resource, action)
  service_script_exist?(:initd, resource.service_name)
end

Instance Method Details

#define_resource_requirementsObject


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# File 'lib/chef/provider/service/debian.rb', line 43

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.exist? 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 { @got_priority == true }
    a.failure_message Chef::Exceptions::Service, "Unable to determine priority for service"
    # 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_serviceObject


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# File 'lib/chef/provider/service/debian.rb', line 167

def disable_service
  if new_resource.priority.is_a? Hash
    # We call the same command regardless if we're enabling or disabling
    # Users passing a Hash are responsible for setting their own stop priorities
    set_priority
    return
  end

  shell_out!("/usr/sbin/update-rc.d -f #{new_resource.service_name} remove")
  shell_out!("/usr/sbin/update-rc.d #{new_resource.service_name} defaults")
  shell_out!("/usr/sbin/update-rc.d #{new_resource.service_name} disable")
end

#enable_serviceObject


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# File 'lib/chef/provider/service/debian.rb', line 151

def enable_service
  # We call the same command regardless if we're enabling or disabling
  # Users passing a Hash are responsible for setting their own stop priorities
  if new_resource.priority.is_a? Hash
    set_priority
    return
  end

  start_priority = new_resource.priority.is_a?(Integer) ? new_resource.priority : 20
  # Stop processes in reverse order of start using '100 - start_priority'.
  stop_priority = 100 - start_priority

  shell_out!("/usr/sbin/update-rc.d -f #{new_resource.service_name} remove")
  shell_out!("/usr/sbin/update-rc.d #{new_resource.service_name} defaults #{start_priority} #{stop_priority}")
end

#get_priorityObject


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# File 'lib/chef/provider/service/debian.rb', line 91

def get_priority
  priority = {}
  rc_files = []

  levels = parse_init_file(@init_command)
  levels.each do |level|
    rc_files.push Dir.glob("/etc/rc#{level}.d/[SK][0-9][0-9]#{current_resource.service_name}")
  end

  rc_files.flatten.each 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
  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

  @got_priority = true
  priority
end

#load_current_resourceObject


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# File 'lib/chef/provider/service/debian.rb', line 36

def load_current_resource
  super
  current_resource.priority(get_priority)
  current_resource.enabled(service_currently_enabled?(current_resource.priority))
  current_resource
end

#parse_init_file(path) ⇒ Object

returns a list of levels that the service should be stopped or started on


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# File 'lib/chef/provider/service/debian.rb', line 74

def parse_init_file(path)
  return [] unless ::File.exist?(path)

  in_info = false
  ::File.readlines(path).each_with_object([]) do |line, acc|
    if /^### BEGIN INIT INFO/.match?(line)
      in_info = true
    elsif /^### END INIT INFO/.match?(line)
      break acc
    elsif in_info
      if line =~ /Default-(Start|Stop):\s+(\d.*)/
        acc << $2.split(" ")
      end
    end
  end.flatten
end

#service_currently_enabled?(priority) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'lib/chef/provider/service/debian.rb', line 119

def service_currently_enabled?(priority)
  enabled = false
  priority.each do |runlevel, arguments|
    logger.trace("#{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
  end

  enabled
end

#set_priorityObject


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# File 'lib/chef/provider/service/debian.rb', line 180

def set_priority
  shell_out!("/usr/sbin/update-rc.d -f #{new_resource.service_name} remove")

  # Reset priorities to default values before applying customizations. This way
  # the final state will always be consistent, regardless if all runlevels were
  # provided.
  shell_out!("/usr/sbin/update-rc.d #{new_resource.service_name} defaults")
  new_resource.priority.each do |level, (action, _priority)|
    disable_or_enable = (action == :start ? "enable" : "disable")

    shell_out!("/usr/sbin/update-rc.d #{new_resource.service_name} #{disable_or_enable} #{level}")
  end
end