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
RUNLEVELS =
%w{ 1 2 3 4 5 S }.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, #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_description, action_descriptions, #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?, #recipe_name, #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::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 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 DSL::Secret

#default_secret_config, #default_secret_service, #secret, #with_secret_config, #with_secret_service

Methods included from DSL::RenderHelpers

#render_json, #render_toml, #render_yaml

Methods included from DSL::ReaderHelpers

#parse_file, #parse_json, #parse_toml, #parse_yaml

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 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

Methods included from DSL::Compliance

#include_input, #include_profile, #include_waiver

Constructor Details

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

Class Method Details

.supports?(resource, action) ⇒ Boolean

Returns:

  • (Boolean)


33
34
35
# File 'lib/chef/provider/service/debian.rb', line 33

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

Instance Method Details

#define_resource_requirementsObject



44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
# File 'lib/chef/provider/service/debian.rb', line 44

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



168
169
170
171
172
173
174
175
176
177
178
179
# File 'lib/chef/provider/service/debian.rb', line 168

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



152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
# File 'lib/chef/provider/service/debian.rb', line 152

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



92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
# File 'lib/chef/provider/service/debian.rb', line 92

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



37
38
39
40
41
42
# File 'lib/chef/provider/service/debian.rb', line 37

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



75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
# File 'lib/chef/provider/service/debian.rb', line 75

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)


120
121
122
123
124
125
126
127
128
129
130
131
# File 'lib/chef/provider/service/debian.rb', line 120

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 RUNLEVELS.include?(runlevel) && arguments[0] == :start
      enabled = true
    end
  end

  enabled
end

#set_priorityObject



181
182
183
184
185
186
187
188
189
190
191
192
193
# File 'lib/chef/provider/service/debian.rb', line 181

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