Class: Chef::Platform

Inherits:
Object
  • Object
show all
Extended by:
Mixin::ConvertToClassName, Mixin::ParamsValidate
Defined in:
lib/chef/platform.rb,
lib/chef/platform/rebooter.rb,
lib/chef/platform/handler_map.rb,
lib/chef/platform/priority_map.rb,
lib/chef/platform/query_helpers.rb,
lib/chef/platform/service_helpers.rb,
lib/chef/platform/provider_mapping.rb,
lib/chef/platform/provider_handler_map.rb,
lib/chef/platform/resource_handler_map.rb,
lib/chef/platform/provider_priority_map.rb,
lib/chef/platform/resource_priority_map.rb

Defined Under Namespace

Modules: Rebooter Classes: HandlerMap, PriorityMap, ProviderHandlerMap, ProviderPriorityMap, ResourceHandlerMap, ResourcePriorityMap, ServiceHelpers

Class Attribute Summary collapse

Class Method Summary collapse

Methods included from Mixin::ConvertToClassName

constantize, convert_to_class_name, convert_to_snake_case, filename_to_qualified_string, normalize_snake_case_name, snake_case_basename

Methods included from Mixin::ParamsValidate

lazy, set_or_return, validate

Class Attribute Details

.platforms ⇒ Object 



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# File 'lib/chef/platform/provider_mapping.rb', line 31

def platforms
  @platforms ||= { default: {} }
end

Class Method Details

.dsc_refresh_mode_disabled?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/platform/query_helpers.rb', line 96

def dsc_refresh_mode_disabled?(node)
  require "chef/util/powershell/cmdlet"
  cmdlet = Chef::Util::Powershell::Cmdlet.new(node, "Get-DscLocalConfigurationManager", :object)
  metadata = cmdlet.run!.return_value
  metadata["RefreshMode"] == "Disabled"
end

.find(name, version) ⇒ Object 



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# File 'lib/chef/platform/provider_mapping.rb', line 37

def find(name, version)
  provider_map = platforms[:default].clone

  name_sym = name
  if name.kind_of?(String)
    name = name.downcase
    name.gsub!(/\s/, "_")
    name_sym = name.to_sym
  end

  if platforms.has_key?(name_sym)
    platform_versions = platforms[name_sym].select { |k, v| k != :default }
    if platforms[name_sym].has_key?(:default)
      provider_map.merge!(platforms[name_sym][:default])
    end
    platform_versions.each do |platform_version, provider|
      begin
        version_constraint = Chef::VersionConstraint::Platform.new(platform_version)
        if version_constraint.include?(version)
          Chef::Log.debug("Platform #{name} version #{version} found")
          provider_map.merge!(provider)
        end
      rescue Chef::Exceptions::InvalidPlatformVersion
        Chef::Log.debug("Chef::Version::Comparable does not know how to parse the platform version: #{version}")
      end
    end
  end
  provider_map
end

.find_platform_and_version(node) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/chef/platform/provider_mapping.rb', line 67

def find_platform_and_version(node)
  platform = nil
  version = nil

  if node[:platform]
    platform = node[:platform]
  elsif node.attribute?("os")
    platform = node[:os]
  end

  raise ArgumentError, "Cannot find a platform for #{node}" unless platform

  if node[:platform_version]
    version = node[:platform_version]
  elsif node[:os_version]
    version = node[:os_version]
  elsif node[:os_release]
    version = node[:os_release]
  end

  raise ArgumentError, "Cannot find a version for #{node}" unless version

  return platform, version
end

.find_provider(platform, version, resource_type) ⇒ Object

Raises:



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# File 'lib/chef/platform/provider_mapping.rb', line 174

def find_provider(platform, version, resource_type)
  provider_klass = explicit_provider(platform, version, resource_type) ||
    platform_provider(platform, version, resource_type) ||
    resource_matching_provider(platform, version, resource_type)

  raise Chef::Exceptions::ProviderNotFound, "Cannot find a provider for #{resource_type} on #{platform} version #{version}" if provider_klass.nil?

  provider_klass
end

.find_provider_for_node(node, resource_type) ⇒ Object 



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# File 'lib/chef/platform/provider_mapping.rb', line 104

def find_provider_for_node(node, resource_type)
  platform, version = find_platform_and_version(node)
  find_provider(platform, version, resource_type)
end

.provider_for_node(node, resource_type) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/chef/platform/provider_mapping.rb', line 100

def provider_for_node(node, resource_type)
  raise NotImplementedError, "#{self.class.name} no longer supports #provider_for_node"
end

.provider_for_resource(resource, action = :nothing) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/chef/platform/provider_mapping.rb', line 92

def provider_for_resource(resource, action = :nothing)
  node = resource.run_context && resource.run_context.node
  raise ArgumentError, "Cannot find the provider for a resource with no run context set" unless node
  provider = find_provider_for_node(node, resource).new(resource, resource.run_context)
  provider.action = action
  provider
end

.set(args) ⇒ Object 



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# File 'lib/chef/platform/provider_mapping.rb', line 109

def set(args)
  validate(
    args,
    {
      :platform => {
        :kind_of => Symbol,
        :required => false,
      },
      :version => {
        :kind_of => String,
        :required => false,
      },
      :resource => {
        :kind_of => Symbol,
      },
      :provider => {
        :kind_of => [ String, Symbol, Class ],
      },
    }
  )
  if args.has_key?(:platform)
    if args.has_key?(:version)
      if platforms.has_key?(args[:platform])
        if platforms[args[:platform]].has_key?(args[:version])
          platforms[args[:platform]][args[:version]][args[:resource].to_sym] = args[:provider]
        else
          platforms[args[:platform]][args[:version]] = {
            args[:resource].to_sym => args[:provider],
          }
        end
      else
        platforms[args[:platform]] = {
          args[:version] => {
            args[:resource].to_sym => args[:provider],
          },
        }
      end
    else
      if platforms.has_key?(args[:platform])
        if platforms[args[:platform]].has_key?(:default)
          platforms[args[:platform]][:default][args[:resource].to_sym] = args[:provider]
        elsif args[:platform] == :default
          platforms[:default][args[:resource].to_sym] = args[:provider]
        else
          platforms[args[:platform]] = { :default => { args[:resource].to_sym => args[:provider] } }
        end
      else
        platforms[args[:platform]] = {
          :default => {
            args[:resource].to_sym => args[:provider],
          },
        }
      end
    end
  else
    if platforms.has_key?(:default)
      platforms[:default][args[:resource].to_sym] = args[:provider]
    else
      platforms[:default] = {
        args[:resource].to_sym => args[:provider],
      }
    end
  end
end

.supported_powershell_version?(node, version_string) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/platform/query_helpers.rb', line 103

def supported_powershell_version?(node, version_string)
  return false unless node[:languages] && node[:languages][:powershell]
  require "rubygems"
  Gem::Version.new(node[:languages][:powershell][:version]) >=
    Gem::Version.new(version_string)
end

.supports_dsc?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/platform/query_helpers.rb', line 82

def supports_dsc?(node)
  node[:languages] && node[:languages][:powershell] &&
    node[:languages][:powershell][:version].to_i >= 4
end

.supports_dsc_invoke_resource?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/platform/query_helpers.rb', line 87

def supports_dsc_invoke_resource?(node)
  supports_dsc?(node) &&
    supported_powershell_version?(node, "5.0.10018.0")
end

.supports_msi? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/platform/query_helpers.rb', line 61

def supports_msi?
  return false unless windows?
  require "win32/registry"

  key = "System\\CurrentControlSet\\Services\\msiserver"
  access = ::Win32::Registry::KEY_QUERY_VALUE

  begin
    ::Win32::Registry::HKEY_LOCAL_MACHINE.open(key, access) do |reg|
      true
    end
  rescue ::Win32::Registry::Error
    false
  end
end

.supports_powershell_execution_bypass?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/platform/query_helpers.rb', line 77

def supports_powershell_execution_bypass?(node)
  node[:languages] && node[:languages][:powershell] &&
    node[:languages][:powershell][:version].to_i >= 3
end

.supports_refresh_mode_enabled?(node) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/platform/query_helpers.rb', line 92

def supports_refresh_mode_enabled?(node)
  supported_powershell_version?(node, "5.0.10586.0")
end

.windows? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/platform/query_helpers.rb', line 23

def windows?
  ChefConfig.windows?
end

.windows_nano_server? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/platform/query_helpers.rb', line 39

def windows_nano_server?
  return false unless windows?
  require "win32/registry"

  # This method may be called before ohai runs (e.g., it may be used to
  # determine settings in config.rb). Chef::Win32::Registry.new uses
  # node attributes to verify the machine architecture which aren't
  # accessible before ohai runs.
  nano = nil
  key = "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Server\\ServerLevels"
  access = ::Win32::Registry::KEY_QUERY_VALUE | 0x0100 # nano is 64-bit only
  begin
    ::Win32::Registry::HKEY_LOCAL_MACHINE.open(key, access) do |reg|
      nano = reg["NanoServer"]
    end
  rescue ::Win32::Registry::Error
    # If accessing the registry key failed, then we're probably not on
    # nano. Fail through.
  end
  return nano == 1
end

.windows_server_2003? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/platform/query_helpers.rb', line 27

def windows_server_2003?
  # WMI startup shouldn't be performed unless we're on Windows.
  return false unless windows?
  require "wmi-lite/wmi"

  wmi = WmiLite::Wmi.new
  host = wmi.first_of("Win32_OperatingSystem")
  is_server_2003 = (host["version"] && host["version"].start_with?("5.2"))

  is_server_2003
end