Class: Puppet::Pops::Serialization::FromDataConverter

Inherits:
Object
  • Object
show all
Defined in:
lib/puppet/pops/serialization/from_data_converter.rb

Overview

Class that can process the ‘Data` produced by the ToDataConverter class and reassemble the objects that were converted.

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = EMPTY_HASH) ⇒ FromDataConverter

Creates a new instance of the processor

Parameters:

  • options (Symbol => Object) (defaults to: EMPTY_HASH) —

    options hash

Options Hash (options):

  • :loader (Loaders::Loader) —

    the loader to use. Can be ‘nil` in which case the default is determined by the Types::TypeParser.

  • :allow_unresolved (Boolean) —

    ‘true` to allow that rich_data hashes are kept “as is” if the designated ’__ptype’ cannot be resolved. Defaults to ‘false`.



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# File 'lib/puppet/pops/serialization/from_data_converter.rb', line 87

def initialize(options = EMPTY_HASH)
  @allow_unresolved = options[:allow_unresolved]
  @allow_unresolved = false if @allow_unresolved.nil?
  @loader = options[:loader]

  @pcore_type_procs = {
    PCORE_TYPE_HASH => proc do |hash, _|
      value = hash[PCORE_VALUE_KEY]
      build({}) do
        top = value.size
        idx = 0
        while idx < top
          key = without_value { convert(value[idx]) }
          idx += 1
          with(key) { convert(value[idx]) }
          idx += 1
        end
      end
    end,

    PCORE_TYPE_SENSITIVE => proc do |hash, _|
      build(Types::PSensitiveType::Sensitive.new(convert(hash[PCORE_VALUE_KEY])))
    end,

    PCORE_TYPE_DEFAULT => proc do |_, _|
      build(:default)
    end,

    PCORE_TYPE_SYMBOL => proc do |hash, _|
      build(:"#{hash[PCORE_VALUE_KEY]}")
    end,

    PCORE_LOCAL_REF_SYMBOL => proc do |hash, _|
      build(JsonPath::Resolver.singleton.resolve(@root, hash[PCORE_VALUE_KEY]))
    end
  }
  @pcore_type_procs.default = proc do |hash, type_value|
    value = hash.include?(PCORE_VALUE_KEY) ? hash[PCORE_VALUE_KEY] : hash.reject { |key, _| PCORE_TYPE_KEY == key }
    if type_value.is_a?(Hash)
      type = without_value { convert(type_value) }
      if type.is_a?(Hash)
        raise SerializationError, _('Unable to deserialize type from %{type}') % { type: type } unless @allow_unresolved

        hash
      else
        pcore_type_hash_to_value(type, value)
      end
    else
      type = Types::TypeParser.singleton.parse(type_value, @loader)
      if type.is_a?(Types::PTypeReferenceType)
        unless @allow_unresolved
          raise SerializationError, _('No implementation mapping found for Puppet Type %{type_name}') % { type_name: type_value }
        end

        hash
      else
        # not a string
        pcore_type_hash_to_value(type, value)
      end
    end
  end
end

Class Method Details

.convert(value, options = EMPTY_HASH) ⇒ RichData

Converts the given ‘Data` value according to the given options and returns the resulting `RichData`.

Parameters:

  • value (Data) —

    the value to convert

  • options (Symbol => <Boolean,String>) (defaults to: EMPTY_HASH) —

    options hash

Options Hash (options):

  • :loader (Loaders::Loader) —

    the loader to use. Can be ‘nil` in which case the default is determined by the Types::TypeParser.

  • :allow_unresolved (Boolean) —

    ‘true` to allow that rich_data hashes are kept “as is” if the designated ’__ptype’ cannot be resolved. Defaults to ‘false`.

Returns:

  • (RichData) —

    the processed result.



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# File 'lib/puppet/pops/serialization/from_data_converter.rb', line 74

def self.convert(value, options = EMPTY_HASH)
  new(options).convert(value)
end

Instance Method Details

#convert(value) ⇒ RichData

Converts the given ‘Data` value and returns the resulting `RichData`

Parameters:

  • value (Data) —

    the value to convert

Returns:

  • (RichData) —

    the processed result



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# File 'lib/puppet/pops/serialization/from_data_converter.rb', line 156

def convert(value)
  case value
  when Hash
    pcore_type = value[PCORE_TYPE_KEY]
    if pcore_type && (pcore_type.is_a?(String) || pcore_type.is_a?(Hash))
      @pcore_type_procs[pcore_type].call(value, pcore_type)
    else
      build({}) { value.each_pair { |key, elem| with(key) { convert(elem) } } }
    end
  when Array
    build([]) { value.each_with_index { |elem, idx| with(idx) { convert(elem) } } }
  else
    build(value)
  end
end