Class: Lono::Output::Template

Inherits:
Object
  • Object
show all
Extended by:
Memoist
Defined in:
lib/lono/output/template.rb

Instance Method Summary collapse

Constructor Details

#initialize(blueprint, template) ⇒ Template

Returns a new instance of Template.



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# File 'lib/lono/output/template.rb', line 5

def initialize(blueprint, template)
  @blueprint, @template = blueprint, template
end

Instance Method Details

#data ⇒ Object 



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# File 'lib/lono/output/template.rb', line 37

def data
  template_path = "#{Lono.config.output_path}/#{@blueprint}/templates/#{@template}.yml"
  check_template_exists!(template_path)
  YAML.load(IO.read(template_path))
end

#optional_parameters ⇒ Object 



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# File 'lib/lono/output/template.rb', line 13

def optional_parameters
  parameters.reject { |logical_id, p| p["Default"].nil? }
end

#parameter_groups ⇒ Object 



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# File 'lib/lono/output/template.rb', line 26

def parameter_groups
  interface = data.dig("Metadata", "AWS::CloudFormation::Interface")
  return unless interface
  pgs = interface["ParameterGroups"]
  pgs.inject({}) do |result, pg|
    label = pg["Label"]["default"]
    parameters = sort_parameter_group(pg["Parameters"])
    result.merge(label => parameters)
  end
end

#parameters ⇒ Object 



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# File 'lib/lono/output/template.rb', line 17

def parameters
  list = data["Parameters"] || []
  # Not using sort_parameter_group because structure is different
  list.sort_by do |name, data|
    optional = !data["Default"].nil?
    [optional, name].join('-')
  end.to_h
end

#required_parameters ⇒ Object 



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# File 'lib/lono/output/template.rb', line 9

def required_parameters
  parameters.select { |logical_id, p| p["Default"].nil? }
end