Class: Puppet::Pops::Lookup::HieraConfigV5 Private

Inherits:
HieraConfig show all
Defined in:
lib/puppet/pops/lookup/hiera_config.rb

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

Constant Summary collapse

RESERVED_OPTION_KEYS =

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

['path', 'uri'].freeze
DEFAULT_CONFIG_HASH =

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

{
  KEY_VERSION => 5,
  KEY_DEFAULTS => {
    KEY_DATADIR => 'data',
    KEY_DATA_HASH => 'yaml_data'
  },
  KEY_HIERARCHY => [
    {
      KEY_NAME => 'Common',
      KEY_PATH => 'common.yaml',
    }
  ]
}.freeze

Constants inherited from HieraConfig

Puppet::Pops::Lookup::HieraConfig::ALL_FUNCTION_KEYS, Puppet::Pops::Lookup::HieraConfig::CONFIG_FILE_NAME, Puppet::Pops::Lookup::HieraConfig::FUNCTION_KEYS, Puppet::Pops::Lookup::HieraConfig::FUNCTION_PROVIDERS, Puppet::Pops::Lookup::HieraConfig::KEY_BACKEND, Puppet::Pops::Lookup::HieraConfig::KEY_DATADIR, Puppet::Pops::Lookup::HieraConfig::KEY_DATA_DIG, Puppet::Pops::Lookup::HieraConfig::KEY_DATA_HASH, Puppet::Pops::Lookup::HieraConfig::KEY_DEFAULTS, Puppet::Pops::Lookup::HieraConfig::KEY_GLOB, Puppet::Pops::Lookup::HieraConfig::KEY_GLOBS, Puppet::Pops::Lookup::HieraConfig::KEY_HIERARCHY, Puppet::Pops::Lookup::HieraConfig::KEY_LOGGER, Puppet::Pops::Lookup::HieraConfig::KEY_LOOKUP_KEY, Puppet::Pops::Lookup::HieraConfig::KEY_NAME, Puppet::Pops::Lookup::HieraConfig::KEY_OPTIONS, Puppet::Pops::Lookup::HieraConfig::KEY_PATH, Puppet::Pops::Lookup::HieraConfig::KEY_PATHS, Puppet::Pops::Lookup::HieraConfig::KEY_URI, Puppet::Pops::Lookup::HieraConfig::KEY_URIS, Puppet::Pops::Lookup::HieraConfig::KEY_V3_BACKEND, Puppet::Pops::Lookup::HieraConfig::KEY_V3_DATA_HASH, Puppet::Pops::Lookup::HieraConfig::KEY_V4_DATA_HASH, Puppet::Pops::Lookup::HieraConfig::KEY_VERSION, Puppet::Pops::Lookup::HieraConfig::LOCATION_KEYS

Constants included from Puppet::Pops::LabelProvider

Puppet::Pops::LabelProvider::A, Puppet::Pops::LabelProvider::AN, Puppet::Pops::LabelProvider::SKIPPED_CHARACTERS, Puppet::Pops::LabelProvider::VOWELS

Constants included from SubLookup

SubLookup::SPECIAL

Instance Attribute Summary

Attributes inherited from HieraConfig

#config_path

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from HieraConfig

config_exist?, #configured_data_providers, create, #create_hiera3_backend_provider, #initialize, #name, #scope_interpolations_stable?, symkeys_to_string, v4_function_config

Methods included from Puppet::Pops::LabelProvider

#a_an, #a_an_uc, #article, #combine_strings, #label, #plural_s, #the, #the_uc

Methods included from LocationResolver

#expand_globs, #expand_uris, #resolve_paths

Methods included from Interpolation

#interpolate

Methods included from SubLookup

#split_key, #sub_lookup

Constructor Details

This class inherits a constructor from Puppet::Pops::Lookup::HieraConfig

Class Method Details

.config_type ⇒ 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. 



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# File 'lib/puppet/pops/lookup/hiera_config.rb', line 452

def self.config_type
  return @@CONFIG_TYPE if class_variable_defined?(:@@CONFIG_TYPE_V5)
  tf = Types::TypeFactory
  nes_t = Types::PStringType::NON_EMPTY

  # Need alias here to avoid ridiculously long regexp burp in case of validation errors.
  uri_t = Pcore::TYPE_URI_ALIAS

  # The option name must start with a letter and end with a letter or digit. May contain underscore and dash.
  option_name_t = tf.pattern(/\A[A-Za-z](:?[0-9A-Za-z_-]*[0-9A-Za-z])?\z/)

  @@CONFIG_TYPE = tf.struct({
    KEY_VERSION => tf.range(5, 5),
    tf.optional(KEY_DEFAULTS) => tf.struct(
      {
        tf.optional(KEY_DATA_HASH) => nes_t,
        tf.optional(KEY_LOOKUP_KEY) => nes_t,
        tf.optional(KEY_DATA_DIG) => nes_t,
        tf.optional(KEY_DATADIR) => nes_t
      }),
    tf.optional(KEY_HIERARCHY) => tf.array_of(tf.struct(
      {
        KEY_NAME => nes_t,
        tf.optional(KEY_OPTIONS) => tf.hash_kv(option_name_t, tf.data),
        tf.optional(KEY_DATA_HASH) => nes_t,
        tf.optional(KEY_LOOKUP_KEY) => nes_t,
        tf.optional(KEY_V3_BACKEND) => nes_t,
        tf.optional(KEY_V4_DATA_HASH) => nes_t,
        tf.optional(KEY_DATA_DIG) => nes_t,
        tf.optional(KEY_PATH) => nes_t,
        tf.optional(KEY_PATHS) => tf.array_of(nes_t, tf.range(1, :default)),
        tf.optional(KEY_GLOB) => nes_t,
        tf.optional(KEY_GLOBS) => tf.array_of(nes_t, tf.range(1, :default)),
        tf.optional(KEY_URI) => uri_t,
        tf.optional(KEY_URIS) => tf.array_of(uri_t, tf.range(1, :default)),
        tf.optional(KEY_DATADIR) => nes_t
      }))
  })
end

Instance Method Details

#create_configured_data_providers(lookup_invocation, parent_data_provider) ⇒ 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. 



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# File 'lib/puppet/pops/lookup/hiera_config.rb', line 492

def create_configured_data_providers(lookup_invocation, parent_data_provider)
  defaults = @config[KEY_DEFAULTS] || EMPTY_HASH
  datadir = defaults[KEY_DATADIR] || 'data'

  # Hashes enumerate their values in the order that the corresponding keys were inserted so it's safe to use
  # a hash for the data_providers.
  data_providers = {}
  @config[KEY_HIERARCHY].each do |he|
    name = he[KEY_NAME]
    raise Puppet::DataBinding::LookupError, "#{@config_path}: Name '#{name}' defined more than once" if data_providers.include?(name)
    function_kind = ALL_FUNCTION_KEYS.find { |key| he.include?(key) }
    if function_kind.nil?
      function_kind = FUNCTION_KEYS.find { |key| defaults.include?(key) }
      function_name = defaults[function_kind]
    else
      function_name = he[function_kind]
    end

    entry_datadir = @config_root + (he[KEY_DATADIR] || datadir)
    location_key = LOCATION_KEYS.find { |key| he.include?(key) }
    locations = case location_key
    when KEY_PATHS
      resolve_paths(entry_datadir, he[location_key], lookup_invocation, @config_path.nil?)
    when KEY_PATH
      resolve_paths(entry_datadir, [he[location_key]], lookup_invocation, @config_path.nil?)
    when KEY_GLOBS
      expand_globs(entry_datadir, he[location_key], lookup_invocation)
    when KEY_GLOB
      expand_globs(entry_datadir, [he[location_key]], lookup_invocation)
    when KEY_URIS
      expand_uris(he[location_key], lookup_invocation)
    when KEY_URI
      expand_uris([he[location_key]], lookup_invocation)
    else
      nil
    end
    next if @config_path.nil? && !locations.nil? && locations.empty? # Default config and no existing paths found
    options = he[KEY_OPTIONS]
    options = options.nil? ? EMPTY_HASH : interpolate(options, lookup_invocation, false)
    if(function_kind == KEY_V3_BACKEND)
      unless parent_data_provider.is_a?(GlobalDataProvider)
        # hiera3_backend is not allowed in environments and modules
        raise Puppet::DataBinding::LookupError, "#{@config_path}: '#{KEY_V3_BACKEND}' is only allowed in the global layer"
      end

      if function_name == 'json' || function_name == 'yaml' || function_name == 'hocon' &&  Puppet.features.hocon?
        # Disallow use of backends that have corresponding "data_hash" functions in version 5
        raise Puppet::DataBinding::LookupError, "#{@config_path}: Use \"#{KEY_DATA_HASH}: #{function_name}_data\" instead of \"#{KEY_V3_BACKEND}: #{function_name}\""
      end
      v3options = { :datadir => entry_datadir.to_s }
      options.each_pair { |k, v| v3options[k.to_sym] = v }
      data_providers[name] = create_hiera3_backend_provider(name, function_name, parent_data_provider, entry_datadir, locations, {
        :hierarchy =>
          locations.nil? ? [] : locations.map do |loc|
            path = loc.original_location
            path.end_with?(".#{function_name}") ? path[0..-(function_name.length + 2)] : path
          end,
        function_name.to_sym => v3options,
        :backends => [ function_name ],
        :logger => 'puppet'
      })
    else
      data_providers[name] = create_data_provider(name, parent_data_provider, function_kind, function_name, options, locations)
    end
  end
  data_providers.values
end

#validate_config(config) ⇒ 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. 



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# File 'lib/puppet/pops/lookup/hiera_config.rb', line 576

def validate_config(config)
  config[KEY_DEFAULTS] ||= DEFAULT_CONFIG_HASH[KEY_DEFAULTS]
  config[KEY_HIERARCHY] ||= DEFAULT_CONFIG_HASH[KEY_HIERARCHY]

  Types::TypeAsserter.assert_instance_of(["The Lookup Configuration at '%s'", @config_path], self.class.config_type, config)
  defaults = config[KEY_DEFAULTS]
  validate_defaults(defaults) unless defaults.nil?
  config[KEY_HIERARCHY].each do |he|
    name = he[KEY_NAME]
    case ALL_FUNCTION_KEYS.count { |key| he.include?(key) }
    when 0
      if defaults.nil? || FUNCTION_KEYS.count { |key| defaults.include?(key) } == 0
        raise Puppet::DataBinding::LookupError,
          "#{@config_path}: One of #{combine_strings(FUNCTION_KEYS)} must defined in hierarchy '#{name}'"
      end
    when 1
      # OK
    when 0
      raise Puppet::DataBinding::LookupError,
        "#{@config_path}: One of #{combine_strings(FUNCTION_KEYS)} must defined in hierarchy '#{name}'"
    else
      raise Puppet::DataBinding::LookupError,
        "#{@config_path}: Only one of #{combine_strings(FUNCTION_KEYS)} can be defined in hierarchy '#{name}'"
    end

    if LOCATION_KEYS.count { |key| he.include?(key) } > 1
      raise Puppet::DataBinding::LookupError,
        "#{@config_path}: Only one of #{combine_strings(LOCATION_KEYS)} can be defined in hierarchy '#{name}'"
    end

    options = he[KEY_OPTIONS]
    unless options.nil?
      RESERVED_OPTION_KEYS.each do |key|
        if options.include?(key)
          raise Puppet::DataBinding::LookupError, "#{@config_path}: Option key '#{key}' used in hierarchy '#{name}' is reserved by Puppet"
        end
      end
    end
  end
  config
end

#validate_defaults(defaults) ⇒ 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. 



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# File 'lib/puppet/pops/lookup/hiera_config.rb', line 618

def validate_defaults(defaults)
  case FUNCTION_KEYS.count { |key| defaults.include?(key) }
  when 0, 1
    # OK
  else
    raise Puppet::DataBinding::LookupError,
      "#{@config_path}: Only one of #{combine_strings(FUNCTION_KEYS)} can be defined in defaults"
  end
end

#version ⇒ 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. 



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# File 'lib/puppet/pops/lookup/hiera_config.rb', line 628

def version
  5
end