Class: Chef::Node

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Includes:
DSL::IncludeAttribute, DSL::Universal, Mixin::FromFile, Mixin::ParamsValidate
Defined in:
lib/chef/node.rb,
lib/chef/node/attribute.rb,
lib/chef/node/common_api.rb,
lib/chef/node/mixin/mashy_array.rb,
lib/chef/node/mixin/state_tracking.rb,
lib/chef/node/attribute_collections.rb,
lib/chef/node/immutable_collections.rb,
lib/chef/node/mixin/deep_merge_cache.rb,
lib/chef/node/mixin/immutablize_hash.rb,
lib/chef/node/mixin/immutablize_array.rb,
lib/chef/node/mixin/state_tracking_array.rb

Defined Under Namespace

Modules: CommonAPI, Immutablize, Mixin Classes: AttrArray, Attribute, ImmutableArray, ImmutableMash, VividMash

Instance Attribute Summary collapse

Attributes included from Mixin::FromFile

#source_file

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Mixin::ParamsValidate

#lazy, #set_or_return, #validate

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::IncludeAttribute

#include_attribute, #parse_attribute_file_spec

Methods included from Mixin::FromFile

#class_from_file, #from_file

Constructor Details

#initialize(chef_server_rest: nil, logger: nil) ⇒ Node

Create a new Chef::Node object.



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# File 'lib/chef/node.rb', line 70

def initialize(chef_server_rest: nil, logger: nil)
  @chef_server_rest = chef_server_rest
  @name = nil
  @logger = logger || Chef::Log.with_child(subsystem: "node")

  @chef_environment = "_default"
  @primary_runlist = Chef::RunList.new
  @override_runlist = Chef::RunList.new

  @policy_name = nil
  @policy_group = nil

  @attributes = Chef::Node::Attribute.new({}, {}, {}, {}, self)

  @run_state = {}
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object

Only works for attribute fetches, setting is no longer supported XXX: this should be deprecated



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# File 'lib/chef/node.rb', line 263

def method_missing(method, *args, &block)
  attributes.public_send(method, *args, &block)
end

Instance Attribute Details

#logger ⇒ Object (readonly)

Returns the value of attribute logger.



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# File 'lib/chef/node.rb', line 53

def logger
  @logger
end

#recipe_list ⇒ Object

Returns the value of attribute recipe_list.



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# File 'lib/chef/node.rb', line 51

def recipe_list
  @recipe_list
end

#run_context ⇒ Object

RunContext will set itself as run_context via this setter when initialized. This is needed so DSL::IncludeAttribute (in particular,

include_recipe) can access the run_context to determine if an attributes

file has been seen yet.

TODO: This is a pretty ugly way to solve that problem.



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# File 'lib/chef/node.rb', line 61

def run_context
  @run_context
end

#run_state ⇒ Object

Returns the value of attribute run_state.



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# File 'lib/chef/node.rb', line 51

def run_state
  @run_state
end

Class Method Details

.build(node_name) ⇒ Object 



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# File 'lib/chef/node.rb', line 644

def self.build(node_name)
  node = new
  node.name(node_name)
  node.chef_environment(Chef::Config[:environment]) unless Chef::Config[:environment].nil? || Chef::Config[:environment].chomp.empty?
  node
end

.find_or_create(node_name) ⇒ Object 



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# File 'lib/chef/node.rb', line 635

def self.find_or_create(node_name)
  load(node_name)
rescue Net::HTTPClientException => e
  raise unless e.response.code == "404"

  node = build(node_name)
  node.create
end

.from_hash(o) ⇒ Object 



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# File 'lib/chef/node.rb', line 580

def self.from_hash(o)
  return o if o.is_a? Chef::Node

  node = new
  node.name(o["name"])

  node.policy_name = o["policy_name"] if o.key?("policy_name")
  node.policy_group = o["policy_group"] if o.key?("policy_group")

  unless node.policy_group.nil?
    node.chef_environment(o["policy_group"])
  else
    node.chef_environment(o["chef_environment"])
  end

  if o.key?("attributes")
    node.normal_attrs = o["attributes"]
  end
  node.automatic_attrs = Mash.new(o["automatic"]) if o.key?("automatic")
  node.normal_attrs = Mash.new(o["normal"]) if o.key?("normal")
  node.default_attrs = Mash.new(o["default"]) if o.key?("default")
  node.override_attrs = Mash.new(o["override"]) if o.key?("override")

  if o.key?("run_list")
    node.run_list.reset!(o["run_list"])
  elsif o.key?("recipes")
    o["recipes"].each { |r| node.recipes << r }
  end

  node
end

.list(inflate = false) ⇒ Object 



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# File 'lib/chef/node.rb', line 622

def self.list(inflate = false)
  if inflate
    response = {}
    Chef::Search::Query.new.search(:node) do |n|
      n = Chef::Node.from_hash(n)
      response[n.name] = n unless n.nil?
    end
    response
  else
    Chef::ServerAPI.new(Chef::Config[:chef_server_url]).get("nodes")
  end
end

.list_by_environment(environment, inflate = false) ⇒ Object 



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# File 'lib/chef/node.rb', line 612

def self.list_by_environment(environment, inflate = false)
  if inflate
    response = {}
    Chef::Search::Query.new.search(:node, "chef_environment:#{environment}") { |n| response[n.name] = n unless n.nil? }
    response
  else
    Chef::ServerAPI.new(Chef::Config[:chef_server_url]).get("environments/#{environment}/nodes")
  end
end

.load(name) ⇒ Object

Load a node by name



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# File 'lib/chef/node.rb', line 652

def self.load(name)
  from_hash(Chef::ServerAPI.new(Chef::Config[:chef_server_url]).get("nodes/#{name}"))
end

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'lib/chef/node.rb', line 708

def <=>(other)
  name <=> other.name
end

#==(other) ⇒ Object 



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# File 'lib/chef/node.rb', line 700

def ==(other)
  if other.is_a?(self.class)
    name == other.name
  else
    false
  end
end

#[](attrib) ⇒ Object

Return an attribute of this node. Returns nil if the attribute is not found.



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# File 'lib/chef/node.rb', line 196

def [](attrib)
  attributes[attrib]
end

#apply_expansion_attributes(expansion) ⇒ Object

Apply the default and overrides attributes from the expansion passed in, which came from roles.



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# File 'lib/chef/node.rb', line 503

def apply_expansion_attributes(expansion)
  loaded_environment = if chef_environment == "_default"
                         Chef::Environment.new.tap { |e| e.name("_default") }
                       else
                         Chef::Environment.load(chef_environment)
                       end

  attributes.env_default = loaded_environment.default_attributes
  attributes.env_override = loaded_environment.override_attributes

  attribute.role_default = expansion.default_attrs
  attributes.role_override = expansion.override_attrs
end

#attribute?(attrib) ⇒ Boolean

Return true if this Node has a given attribute, false if not. Takes either a symbol or a string.

Only works on the top level. Preferred way is to use the normal [] style lookup and call attribute?()

Returns:

  • (Boolean) 


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# File 'lib/chef/node.rb', line 247

def attribute?(attrib)
  attributes.attribute?(attrib)
end

#attributes ⇒ Object Also known as: attribute, construct_attributes 



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# File 'lib/chef/node.rb', line 188

def attributes
  @attributes
end

#automatic_attrs ⇒ Object 



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# File 'lib/chef/node.rb', line 234

def automatic_attrs
  attributes.automatic
end

#automatic_attrs=(new_values) ⇒ Object 



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# File 'lib/chef/node.rb', line 238

def automatic_attrs=(new_values)
  attributes.automatic = new_values
end

#chef_environment(arg = nil) ⇒ Object Also known as: environment 



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# File 'lib/chef/node.rb', line 128

def chef_environment(arg = nil)
  set_or_return(
    :chef_environment,
    arg,
    { regex: /^[\-[:alnum:]_]+$/, kind_of: String }
  )
end

#chef_environment=(environment) ⇒ Object 



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# File 'lib/chef/node.rb', line 136

def chef_environment=(environment)
  chef_environment(environment)
end

#chef_server_rest ⇒ Object 



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# File 'lib/chef/node.rb', line 100

def chef_server_rest
  # for saving node data we use validate_utf8: false which will not
  # raise an exception on bad utf8 data, but will replace the bad
  # characters and render valid JSON.
  @chef_server_rest ||= Chef::ServerAPI.new(
    Chef::Config[:chef_server_url],
    client_name: Chef::Config[:node_name],
    signing_key_filename: Chef::Config[:client_key],
    validate_utf8: false
  )
end

#consume_attributes(attrs) ⇒ Object

Consumes the combined run_list and other attributes in +attrs+



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# File 'lib/chef/node.rb', line 389

def consume_attributes(attrs)
  normal_attrs_to_merge = consume_run_list(attrs)
  normal_attrs_to_merge = consume_chef_environment(normal_attrs_to_merge)
  # FIXME(log): should be trace
  logger.debug("Applying attributes from json file")
  self.normal_attrs = Chef::Mixin::DeepMerge.merge(normal_attrs, normal_attrs_to_merge)
  tags # make sure they're defined
end

#consume_chef_environment(attrs) ⇒ Object

chef_environment when set in -j JSON will take precedence over -E ENVIRONMENT. Ideally, IMO, the order of precedence should be (lowest to highest): config_file -j JSON -E ENVIRONMENT so that users could reuse their JSON and override the chef_environment configured within it with -E ENVIRONMENT. Because command line options are merged with Chef::Config there is currently no way to distinguish between an environment set via config from an environment set via command line.



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# File 'lib/chef/node.rb', line 458

def consume_chef_environment(attrs)
  attrs = attrs ? attrs.dup : {}
  if env = attrs.delete("chef_environment")
    chef_environment(env)
  end
  attrs
end

#consume_external_attrs(ohai_data, json_cli_attrs) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Handles both the consumption of ohai data and possibly JSON attributes from the CLI



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# File 'lib/chef/node.rb', line 357

def consume_external_attrs(ohai_data, json_cli_attrs)
  # FIXME(log): should be trace
  logger.debug("Extracting run list from JSON attributes provided on command line")
  consume_attributes(json_cli_attrs)

  self.automatic_attrs = ohai_data
  fix_automatic_attributes
end

#consume_ohai_data(ohai_data) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

This is for ohai plugins to consume ohai data and have it merged, it should probably be renamed



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# File 'lib/chef/node.rb', line 369

def consume_ohai_data(ohai_data)
  self.automatic_attrs = Chef::Mixin::DeepMerge.merge(automatic_attrs, ohai_data)
  fix_automatic_attributes
end

#consume_run_list(attrs) ⇒ Object

Extracts the run list from +attrs+ and applies it. Returns the remaining attributes



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# File 'lib/chef/node.rb', line 435

def consume_run_list(attrs)
  attrs = attrs ? attrs.dup : {}
  if new_run_list = attrs.delete("recipes") || attrs.delete("run_list")
    if attrs.key?("recipes") || attrs.key?("run_list")
      raise Chef::Exceptions::AmbiguousRunlistSpecification, "please set the node's run list using the 'run_list' attribute only."
    end

    logger.info("Setting the run_list to #{new_run_list} from CLI options")
    run_list(new_run_list)
  end
  attrs
end

#create ⇒ Object

Create the node via the REST API



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# File 'lib/chef/node.rb', line 682

def create
  chef_server_rest.post("nodes", data_for_save)
  self
rescue Net::HTTPClientException => e
  # Chef Server before 12.3 rejects node JSON with 'policy_name' or
  # 'policy_group' keys, but 'policy_name' will be detected first.
  # Backcompat can be removed in 13.0
  if e.response.code == "400" && e.response.body.include?("Invalid key policy_name")
    chef_server_rest.post("nodes", data_for_save_without_policyfile_attrs)
  else
    raise
  end
end

#data_for_save ⇒ Object

Returns hash of node data with attributes based on whitelist/blacklist rules.



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# File 'lib/chef/node.rb', line 713

def data_for_save
  data = for_json
  %w{automatic default normal override}.each do |level|
    allowlist = allowlist_or_whitelist_config(level)
    unless allowlist.nil? # nil => save everything
      logger.info("Allowing #{level} node attributes for save.")
      data[level] = Chef::AttributeAllowlist.filter(data[level], allowlist)
    end

    blocklist = blocklist_or_blacklist_config(level)
    unless blocklist.nil? # nil => remove nothing
      logger.info("Blocking #{level} node attributes for save")
      data[level] = Chef::AttributeBlocklist.filter(data[level], blocklist)
    end
  end
  data
end

#default ⇒ Object Also known as: default_attrs

Set a default of this node, but auto-vivify any Mashes that might be missing



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# File 'lib/chef/node.rb', line 208

def default
  attributes.default
end

#default_attrs=(new_values) ⇒ Object 



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# File 'lib/chef/node.rb', line 226

def default_attrs=(new_values)
  attributes.default = new_values
end

#destroy ⇒ Object

Remove this node via the REST API



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# File 'lib/chef/node.rb', line 657

def destroy
  chef_server_rest.delete("nodes/#{name}")
end

#display_hash ⇒ Object 



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# File 'lib/chef/node.rb', line 529

def display_hash
  display = {}
  display["name"]             = name
  display["chef_environment"] = chef_environment
  display["automatic"]        = attributes.automatic.to_hash
  display["normal"]           = attributes.normal.to_hash
  display["default"]          = attributes.combined_default.to_hash
  display["override"]         = attributes.combined_override.to_hash
  display["run_list"]         = run_list.run_list_items
  display
end

#each(&block) ⇒ Object

Yield each key of the top level to the block.



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# File 'lib/chef/node.rb', line 252

def each(&block)
  attributes.each(&block)
end

#each_attribute(&block) ⇒ Object

Iterates over each attribute, passing the attribute and value to the block.



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# File 'lib/chef/node.rb', line 257

def each_attribute(&block)
  attributes.each_attribute(&block)
end

#expand!(data_source = "server") ⇒ Object

Expands the node's run list and sets the default and override attributes. Also applies stored attributes (from json provided on the command line)

Returns the fully-expanded list of recipes, a RunListExpansion.

-- TODO: timh/cw, 5-14-2010: Should this method exist? Should we instead modify default_attrs and override_attrs whenever our run_list is mutated? Or perhaps do something smarter like on-demand generation of default_attrs and override_attrs, invalidated only when run_list is mutated?

Raises:



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# File 'lib/chef/node.rb', line 485

def expand!(data_source = "server")
  expansion = run_list.expand(chef_environment, data_source)
  raise Chef::Exceptions::MissingRole, expansion if expansion.errors?

  tags # make sure they're defined

  automatic_attrs[:recipes] = expansion.recipes.with_duplicate_names
  automatic_attrs[:expanded_run_list] = expansion.recipes.with_fully_qualified_names_and_version_constraints
  automatic_attrs[:roles] = expansion.roles

  apply_expansion_attributes(expansion)

  automatic_attrs[:chef_environment] = chef_environment
  expansion
end

#fix_automatic_attributes ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Always ensure that certain automatic attributes are populated and constructed correctly



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# File 'lib/chef/node.rb', line 377

def fix_automatic_attributes
  platform, version = Chef::Platform.find_platform_and_version(self)
  # FIXME(log): should be trace
  logger.debug("Platform is #{platform} version #{version}")
  automatic[:platform] = platform
  automatic[:platform_version] = Chef::VersionString.new(version)
  automatic[:chef_guid] = Chef::Config[:chef_guid] || ( Chef::Config[:chef_guid] = node_uuid )
  automatic[:name] = name
  automatic[:chef_environment] = chef_environment
end

#for_json ⇒ Object 



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# File 'lib/chef/node.rb', line 546

def for_json
  result = {
    "name" => name,
    "chef_environment" => chef_environment,
    "json_class" => self.class.name,
    "automatic" => attributes.automatic.to_hash,
    "normal" => attributes.normal.to_hash,
    "chef_type" => "node",
    "default" => attributes.combined_default.to_hash,
    "override" => attributes.combined_override.to_hash,
    # Render correctly for run_list items so malformed json does not result
    "run_list" => @primary_runlist.run_list.map(&:to_s),
  }
  # Chef Server rejects node JSON with extra keys; prior to 12.3,
  # "policy_name" and "policy_group" are unknown; after 12.3 they are
  # optional, therefore only including them in the JSON if present
  # maximizes compatibility for most people.
  unless policy_group.nil? && policy_name.nil?
    result["policy_name"] = policy_name
    result["policy_group"] = policy_group
  end
  result
end

#loaded_recipe(cookbook, recipe) ⇒ Object

used by include_recipe to add recipes to the expanded run_list to be saved back to the node and be searchable



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# File 'lib/chef/node.rb', line 285

def loaded_recipe(cookbook, recipe)
  fully_qualified_recipe = "#{cookbook}::#{recipe}"

  automatic_attrs[:recipes] << fully_qualified_recipe unless Array(automatic_attrs[:recipes]).include?(fully_qualified_recipe)
end

#name(arg = nil) ⇒ Object

Set the name of this Node, or return the current name.



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# File 'lib/chef/node.rb', line 113

def name(arg = nil)
  if !arg.nil?
    validate(
      { name: arg },
      { name: { kind_of: String,
                cannot_be: :blank,
                regex: /^[\-[:alnum:]_:.]+$/ },
      }
    )
    @name = arg
  else
    @name
  end
end

#node ⇒ Object

Used by DSL



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# File 'lib/chef/node.rb', line 96

def node
  self
end

#normal ⇒ Object Also known as: normal_attrs

Set a normal attribute of this node, but auto-vivify any Mashes that might be missing



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# File 'lib/chef/node.rb', line 202

def normal
  attributes.normal
end

#normal_attrs=(new_values) ⇒ Object 



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# File 'lib/chef/node.rb', line 230

def normal_attrs=(new_values)
  attributes.normal = new_values
end

#override ⇒ Object Also known as: override_attrs

Set an override attribute of this node, but auto-vivify any Mashes that might be missing



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# File 'lib/chef/node.rb', line 214

def override
  attributes.override
end

#override_attrs=(new_values) ⇒ Object 



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# File 'lib/chef/node.rb', line 222

def override_attrs=(new_values)
  attributes.override = new_values
end

#override_runlist(*args) ⇒ Chef::RunList

Accessor for override_runlist (this cannot set an empty override run list)

Returns:



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# File 'lib/chef/node.rb', line 317

def override_runlist(*args)
  return @override_runlist if args.length == 0

  @override_runlist_set = true
  @override_runlist.reset!(args)
end

#override_runlist=(array) ⇒ Chef::RunList

Setter for override_runlist which allows setting an empty override run list and marking it to be used

Returns:



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# File 'lib/chef/node.rb', line 328

def override_runlist=(array)
  @override_runlist_set = true
  @override_runlist.reset!(array)
end

#override_runlist_set? ⇒ Boolean

This boolean can be useful to determine if an override_runlist is set, it can be true even if the override_runlist is empty.

(Mutators can set the override_runlist so any non-empty override_runlist is considered set)

Returns:

  • (Boolean) —

    if the override run list has been set



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# File 'lib/chef/node.rb', line 309

def override_runlist_set?
  !!@override_runlist_set || !override_runlist.empty?
end

#policy_group(arg = NOT_PASSED) ⇒ String

The policy_group for this node. Setting this to a non-nil value will enable policyfile mode when chef-client is run. If set in the config file or in node json, running chef-client will update this value.

Parameters:

  • arg (String) (defaults to: NOT_PASSED) —

    the new policy_group value

Returns:

  • (String) —

    the current policy_group, or the one you just set

See Also:



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# File 'lib/chef/node.rb', line 174

def policy_group(arg = NOT_PASSED)
  return @policy_group if arg.equal?(NOT_PASSED)

  validate({ policy_group: arg }, { policy_group: { kind_of: [ String, NilClass ], regex: /^[\-:.[:alnum:]_]+$/ } })
  @policy_group = arg
end

#policy_group=(policy_group) ⇒ Object

A "non-DSL-style" setter for policy_group

See Also:



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# File 'lib/chef/node.rb', line 184

def policy_group=(policy_group)
  policy_group(policy_group)
end

#policy_name(arg = NOT_PASSED) ⇒ String

The policy_name for this node. Setting this to a non-nil value will enable policyfile mode when chef-client is run. If set in the config file or in node json, running chef-client will update this value.

Parameters:

  • arg (String) (defaults to: NOT_PASSED) —

    the new policy_name value

Returns:

  • (String) —

    the current policy_name, or the one you just set

See Also:



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# File 'lib/chef/node.rb', line 151

def policy_name(arg = NOT_PASSED)
  return @policy_name if arg.equal?(NOT_PASSED)

  validate({ policy_name: arg }, { policy_name: { kind_of: [ String, NilClass ], regex: /^[\-:.[:alnum:]_]+$/ } })
  @policy_name = arg
end

#policy_name=(policy_name) ⇒ Object

A "non-DSL-style" setter for policy_name

See Also:



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# File 'lib/chef/node.rb', line 161

def policy_name=(policy_name)
  policy_name(policy_name)
end

#primary_runlist ⇒ Object 



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# File 'lib/chef/node.rb', line 299

def primary_runlist
  @primary_runlist
end

#recipe?(recipe_name) ⇒ Boolean

Returns true if this Node expects a given recipe, false if not.

First, the run list is consulted to see whether the recipe is explicitly included. If it's not there, it looks in node[:recipes], which is populated when the run_list is expanded

NOTE: It's used by cookbook authors

Returns:

  • (Boolean) 


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# File 'lib/chef/node.rb', line 279

def recipe?(recipe_name)
  run_list.include?(recipe_name) || Array(self[:recipes]).include?(recipe_name)
end

#reset_defaults_and_overrides ⇒ Object

Clear defaults and overrides, so that any deleted attributes between runs are still gone.



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# File 'lib/chef/node.rb', line 468

def reset_defaults_and_overrides
  default.clear
  override.clear
end

#respond_to_missing?(method, include_private = false) ⇒ Boolean

Fix respond_to + method so that it works with method_missing delegation

Returns:

  • (Boolean) 


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# File 'lib/chef/node.rb', line 268

def respond_to_missing?(method, include_private = false)
  attributes.respond_to?(method, false)
end

#role?(role_name) ⇒ Boolean

Returns true if this Node expects a given role, false if not.

Parameters:

  • role_name (String) —

    Role to check for

Returns:

  • (Boolean) 


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# File 'lib/chef/node.rb', line 295

def role?(role_name)
  Array(self[:roles]).include?(role_name)
end

#run_list(*args) ⇒ Object

Returns an Array of roles and recipes, in the order they will be applied. If you call it with arguments, they will become the new list of roles and recipes.



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# File 'lib/chef/node.rb', line 339

def run_list(*args)
  rl = select_run_list
  args.length > 0 ? rl.reset!(args) : rl
end

#run_list=(list) ⇒ Object 



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# File 'lib/chef/node.rb', line 344

def run_list=(list)
  rl = select_run_list
  rl = list
end

#run_list?(item) ⇒ Boolean

Returns true if this Node expects a given role, false if not.

Returns:

  • (Boolean) 


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# File 'lib/chef/node.rb', line 350

def run_list?(item)
  run_list.detect { |r| r == item } ? true : false
end

#save ⇒ Object

Save this node via the REST API



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# File 'lib/chef/node.rb', line 662

def save
  # Try PUT. If the node doesn't yet exist, PUT will return 404,
  # so then POST to create.
  begin
    if Chef::Config[:why_run]
      logger.warn("In why-run mode, so NOT performing node save.")
    else
      chef_server_rest.put("nodes/#{name}", data_for_save)
    end
  rescue Net::HTTPClientException => e
    if e.response.code == "404"
      chef_server_rest.post("nodes", data_for_save)
    else
      raise
    end
  end
  self
end

#select_run_list ⇒ Object 



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# File 'lib/chef/node.rb', line 333

def select_run_list
  override_runlist_set? ? @override_runlist : @primary_runlist
end

#set_cookbook_attribute ⇒ Object

after the run_context has been set on the node, go through the cookbook_collection and setup the node[:cookbooks] attribute so that it is published in the node object



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# File 'lib/chef/node.rb', line 89

def set_cookbook_attribute
  run_context.cookbook_collection.each do |cookbook_name, cookbook|
    automatic_attrs[:cookbooks][cookbook_name][:version] = cookbook.version
  end
end

#tag(*args) ⇒ Object

Add the list of tags to the node.

=== Parameters tags:: A list of tags

=== Returns tags:: The current list of run_context.node.tags



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# File 'lib/chef/node.rb', line 411

def tag(*args)
  args.each do |tag|
    tags.push(tag.to_s) unless tags.include? tag.to_s
  end

  tags
end

#tags ⇒ Object

Lazy initializer for tags attribute



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# File 'lib/chef/node.rb', line 399

def tags
  normal[:tags] = Array(normal[:tags])
  normal[:tags]
end

#to_hash ⇒ Object

Transform the node to a Hash



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# File 'lib/chef/node.rb', line 518

def to_hash
  index_hash = attributes.to_hash
  index_hash["chef_type"] = "node"
  index_hash["name"] = name
  index_hash["chef_environment"] = chef_environment
  index_hash["recipe"] = run_list.recipe_names if run_list.recipe_names.length > 0
  index_hash["role"] = run_list.role_names if run_list.role_names.length > 0
  index_hash["run_list"] = run_list.run_list_items
  index_hash
end

#to_json(*a) ⇒ Object

Serialize this object as a hash



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# File 'lib/chef/node.rb', line 542

def to_json(*a)
  Chef::JSONCompat.to_json(for_json, *a)
end

#to_s ⇒ Object 



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# File 'lib/chef/node.rb', line 696

def to_s
  "node[#{name}]"
end

#untag(*args) ⇒ Object

Removes the list of tags from the node.

=== Parameters tags:: A list of tags

=== Returns tags:: The current list of run_context.node.tags



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# File 'lib/chef/node.rb', line 426

def untag(*args)
  args.each do |tag|
    tags.delete(tag.to_s)
  end

  tags
end

#update_from!(o) ⇒ Object 



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# File 'lib/chef/node.rb', line 570

def update_from!(o)
  run_list.reset!(o.run_list)
  self.automatic_attrs = o.automatic_attrs
  self.normal_attrs = o.normal_attrs
  self.override_attrs = o.override_attrs
  self.default_attrs = o.default_attrs
  chef_environment(o.chef_environment)
  self
end