Class: Chef::Provider::Service::Macosx

Inherits:
Simple show all
Defined in:
lib/chef/provider/service/macosx.rb

Constant Summary collapse

PLIST_DIRS =
gather_plist_dirs

Instance Attribute Summary

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 Simple

#reload_service, #shared_resource_requirements

Methods inherited from Chef::Provider::Service

#initialize, #load_new_resource_state, #mask_service, #reload_service, #shared_resource_requirements, #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, supports?, 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

Class Method Details

.gather_plist_dirsObject


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# File 'lib/chef/provider/service/macosx.rb', line 35

def self.gather_plist_dirs
  locations = %w{/Library/LaunchAgents
                 /Library/LaunchDaemons
                 /System/Library/LaunchAgents
                 /System/Library/LaunchDaemons }
  Chef::Util::PathHelper.home("Library", "LaunchAgents") { |p| locations << p }
  locations
end

Instance Method Details

#define_resource_requirementsObject


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# File 'lib/chef/provider/service/macosx.rb', line 73

def define_resource_requirements
  requirements.assert(:reload) do |a|
    a.failure_message Chef::Exceptions::UnsupportedAction, "#{self} does not support :reload"
  end

  requirements.assert(:all_actions) do |a|
    a.assertion { @plist_size < 2 }
    a.failure_message Chef::Exceptions::Service, "Several plist files match service name. Please use full service name."
  end

  requirements.assert(:all_actions) do |a|
    a.assertion { ::File.exist?(@plist.to_s) }
    a.failure_message Chef::Exceptions::Service,
      "Could not find plist for #{@new_resource}"
  end

  requirements.assert(:enable, :disable) do |a|
    a.assertion { !@service_label.to_s.empty? }
    a.failure_message Chef::Exceptions::Service,
      "Could not find service's label in plist file '#{@plist}'!"
  end

  requirements.assert(:all_actions) do |a|
    a.assertion { @plist_size > 0 }
    # No failure here in original code - so we also will not
    # fail. Instead warn that the service is potentially missing
    a.whyrun "Assuming that the service would have been previously installed and is currently disabled." do
      @current_resource.enabled(false)
      @current_resource.running(false)
    end
  end
end

#disable_serviceObject


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# File 'lib/chef/provider/service/macosx.rb', line 162

def disable_service
  unless @current_resource.enabled
    logger.trace("#{@new_resource} not enabled, not disabling")
  else
    unload_service
  end
end

#enable_serviceObject

On macOS, enabling a service has the side-effect of starting it, and disabling a service has the side-effect of stopping it.

This makes some sense on macOS since launchctl is an "init"-style supervisor that will restart daemons that are crashing, etc.

FIXME: Does this make any sense at all? The difference between enabled and running as state would seem to only be useful for completely broken services (enabled, not restarting, but not running => totally broken?).

It seems like otherwise :enable is equivalent to :start, and :disable is equivalent to :stop? But just with strangely different behavior in the face of a broken service?


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# File 'lib/chef/provider/service/macosx.rb', line 154

def enable_service
  if @current_resource.enabled
    logger.trace("#{@new_resource} already enabled, not enabling")
  else
    load_service
  end
end

#load_current_resourceObject


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# File 'lib/chef/provider/service/macosx.rb', line 46

def load_current_resource
  @current_resource = Chef::Resource::MacosxService.new(@new_resource.name)
  @current_resource.service_name(@new_resource.service_name)
  @plist_size = 0
  @plist = @new_resource.plist ? @new_resource.plist : find_service_plist
  @service_label = find_service_label
  # LaunchAgents should be loaded as the console user.
  @console_user = @plist ? @plist.include?("LaunchAgents") : false
  @session_type = @new_resource.session_type

  if @console_user
    @console_user = Etc.getpwuid(::File.stat("/dev/console").uid).name
    logger.trace("#{new_resource} console_user: '#{@console_user}'")

    @base_user_cmd = "su -l #{@console_user} -c"
    logger.trace("#{new_resource} base_user_cmd: '#{@base_user_cmd}'")

    # Default LaunchAgent session should be Aqua
    @session_type = "Aqua" if @session_type.nil?
  end

  logger.trace("#{new_resource} Plist: '#{@plist}' service_label: '#{@service_label}'")
  set_service_status

  @current_resource
end

#load_serviceObject


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# File 'lib/chef/provider/service/macosx.rb', line 170

def load_service
  session = @session_type ? "-S #{@session_type} " : ""
  cmd = "launchctl load -w " + session + @plist
  shell_out_as_user(cmd)
end

#restart_serviceObject


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# File 'lib/chef/provider/service/macosx.rb', line 130

def restart_service
  if @new_resource.restart_command
    super
  else
    unload_service
    sleep 1
    load_service
  end
end

#set_service_statusObject


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# File 'lib/chef/provider/service/macosx.rb', line 190

def set_service_status
  return if @plist.nil? || @service_label.to_s.empty?

  cmd = "launchctl list #{@service_label}"
  res = shell_out_as_user(cmd)

  if res.exitstatus == 0
    @current_resource.enabled(true)
  else
    @current_resource.enabled(false)
  end

  if @current_resource.enabled
    res.stdout.each_line do |line|
      case line.downcase
      when /\s+\"pid\"\s+=\s+(\d+).*/
        pid = $1
        @current_resource.running(pid.to_i != 0)
        logger.trace("Current PID for #{@service_label} is #{pid}")
      end
    end
  else
    @current_resource.running(false)
  end
end

#shell_out_as_user(cmd) ⇒ Object


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# File 'lib/chef/provider/service/macosx.rb', line 181

def shell_out_as_user(cmd)
  if @console_user
    shell_out("#{@base_user_cmd} '#{cmd}'", default_env: false)
  else
    shell_out(cmd, default_env: false)

  end
end

#start_serviceObject


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# File 'lib/chef/provider/service/macosx.rb', line 106

def start_service
  if @current_resource.running
    logger.trace("#{@new_resource} already running, not starting")
  else
    if @new_resource.start_command
      super
    else
      load_service
    end
  end
end

#stop_serviceObject


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# File 'lib/chef/provider/service/macosx.rb', line 118

def stop_service
  unless @current_resource.running
    logger.trace("#{@new_resource} not running, not stopping")
  else
    if @new_resource.stop_command
      super
    else
      unload_service
    end
  end
end

#unload_serviceObject


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# File 'lib/chef/provider/service/macosx.rb', line 176

def unload_service
  cmd = "launchctl unload -w " + @plist
  shell_out_as_user(cmd)
end