class AWS::Core::Resource::AttributeProvider

@private

Attributes

request_types[R]

Public Class Methods

new(klass, request_types) click to toggle source

# File lib/aws/core/resource.rb, line 313
def initialize klass, request_types
  @klass = klass
  @id = klass.attribute_providers.length
  @request_types = request_types
  @provides = {}
end

Public Instance Methods

attributes_from_response(resource, response) click to toggle source

# File lib/aws/core/resource.rb, line 351
def attributes_from_response resource, response
  if response_object = resource.send(finder_method, response)
    attributes_from_response_object(response_object)
  else
    {}
  end
end

attributes_from_response_object(resp_obj) click to toggle source

# File lib/aws/core/resource.rb, line 359
def attributes_from_response_object resp_obj
  attributes = {}
  @provides.each do |attr_name, options|
  
    attr = @klass.attributes[attr_name]
    method = options[:get_as] || attr.get_as
  
    v = case
    when resp_obj.respond_to?(:key?) && resp_obj.key?(method.to_s)
      resp_obj[method.to_s]
    when resp_obj.respond_to?(method)
      resp_obj.send(method)
    else
      nil
    end
    v = v.value if v and options[:value_wrapped]
    v = attr.translate_output_value(v)
  
    attributes[attr_name] = v
  
  end
  attributes
end

find(&block) click to toggle source

# File lib/aws/core/resource.rb, line 322
def find &block
  @klass.send(:define_method, finder_method, &block)
end

finder_method() click to toggle source

# File lib/aws/core/resource.rb, line 326
def finder_method
  "_find_in_#{request_types.join('_or_')}_response_#{@id}"
end

provides(*attr_names) click to toggle source

Indicates that all of the the named attributes can be retrieved from an appropriate response object.

@param [Symbol] attr_names A list of attributes provided @param [Hash] options @option options [Boolean] :value_wrapped (false) If true, then

the value returned by the response object will also receive
the message :value before it is translated and returned.

@option options [Symbol] :get_as Defaults to the method named

by the attribute.  This is useful when you have two providers
for the same attribute but their response object name
them differently.

# File lib/aws/core/resource.rb, line 342
def provides *attr_names
  options = attr_names.last.is_a?(Hash) ? attr_names.pop : {}
  attr_names.each do |attr_name|
    attr = @klass.attributes[attr_name]
    attr.request_types.push(*request_types)
    @provides[attr_name] = options
  end
end