Class: CfnDsl::OrchestrationTemplate

Inherits:
JSONable
  • Object
show all
Defined in:
lib/cfndsl/orchestration_template.rb

Overview

Handles the overall template object rubocop:disable Metrics/ClassLength

Direct Known Subclasses

CloudFormationTemplate, HeatTemplate

Constant Summary collapse

GlobalRefs = 
{
  'AWS::NotificationARNs' => 1,
  'AWS::Region' => 1,
  'AWS::StackId' => 1,
  'AWS::StackName' => 1,
  'AWS::AccountId' => 1,
  'AWS::NoValue' => 1
}.freeze

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from JSONable

#as_json, #declare, #external_parameters, external_parameters, #ref_children, #to_json

Methods included from Functions

#FnAnd, #FnBase64, #FnEquals, #FnFindInMap, #FnFormat, #FnGetAZs, #FnGetAtt, #FnIf, #FnJoin, #FnNot, #FnOr, #FnSelect, #Ref

Methods included from RefCheck

#build_references, #ref_children

Constructor Details

#initialize ⇒ OrchestrationTemplate

Returns a new instance of OrchestrationTemplate.



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# File 'lib/cfndsl/orchestration_template.rb', line 13

def initialize
  @AWSTemplateFormatVersion = '2010-09-09'
end

Class Method Details

.create_types ⇒ Object

rubocop:disable Metrics/MethodLength, Metrics/AbcSize, Metrics/PerceivedComplexity, Metrics/CyclomaticComplexity



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# File 'lib/cfndsl/orchestration_template.rb', line 86

def self.create_types
  names = {}
  nametypes = {}
  template_types['Resources'].each_pair do |name, type|
    # Subclass ResourceDefintion and generate property methods
    klass = Class.new(CfnDsl::ResourceDefinition)
    klassname = name.split('::').join('_')
    type_module.const_set(klassname, klass)
    type['Properties'].each_pair do |pname, ptype|
      if ptype.instance_of?(String)
        create_klass = type_module.const_get(ptype)

        klass.class_eval do
          CfnDsl.method_names(pname) do |method|
            define_method(method) do |*values, &block|
              values.push create_klass.new if values.empty?

              @Properties ||= {}
              @Properties[pname] = CfnDsl::PropertyDefinition.new(*values)
              @Properties[pname].value.instance_eval(&block) if block
              @Properties[pname].value
            end
          end
        end
      else
        # Array version
        klass.class_eval do
          CfnDsl.method_names(pname) do |method|
            define_method(method) do |*values, &block|
              values.push [] if values.empty?
              @Properties ||= {}
              @Properties[pname] ||= PropertyDefinition.new(*values)
              @Properties[pname].value.instance_eval(&block) if block
              @Properties[pname].value
            end
          end
        end

        sing_name = CfnDsl::Plurals.singularize(pname)
        create_klass = type_module.const_get(ptype[0])
        sing_names = sing_name == pname ? [ptype[0]] : [ptype[0], sing_name]

        klass.class_eval do
          sing_names.each do |sname|
            CfnDsl.method_names(sname) do |method|
              define_method(method) do |value = nil, &block|
                @Properties ||= {}
                @Properties[pname] ||= PropertyDefinition.new([])
                value = create_klass.new unless value
                @Properties[pname].value.push value
                value.instance_eval(&block) if block
                value
              end
            end
          end
        end
      end
    end
    parts = name.split('::')
    until parts.empty?
      break if parts[0] == 'Resource'
      abreve_name = parts.join('_')
      if names.key?(abreve_name)
        # this only happens if there is an ambiguity
        names[abreve_name] = nil
      else
        names[abreve_name] = type_module.const_get(klassname)
        nametypes[abreve_name] = name
      end
      parts.shift
    end
  end

  # Define property setter methods for each of the unambiguous type names
  names.each_pair do |typename, type|
    next unless type

    class_eval do
      CfnDsl.method_names(typename) do |method|
        define_method(method) do |name, *values, &block|
          name = name.to_s
          @Resources ||= {}
          resource = @Resources[name] ||= type.new(*values)
          resource.instance_eval(&block) if block
          resource.instance_variable_set('@Type', nametypes[typename])
          resource
        end
      end
    end
  end
end

Instance Method Details

#check_output_refs ⇒ Object 



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# File 'lib/cfndsl/orchestration_template.rb', line 67

def check_output_refs
  invalids = []

  output_refs = {}
  if @Outputs
    @Outputs.keys.each do |resource|
      output_refs[resource.to_s] = @Outputs[resource].build_references({})
    end
    output_refs.keys.each do |origin|
      output_refs[origin].keys.each do |ref|
        invalids.push "Invalid Reference: Output #{origin} refers to #{ref}" unless valid_ref?(ref)
      end
    end
  end

  invalids
end

#check_refs ⇒ Object

rubocop:enable Metrics/PerceivedComplexity



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# File 'lib/cfndsl/orchestration_template.rb', line 43

def check_refs
  invalids = check_resource_refs + check_output_refs

  invalids.empty? ? nil : invalids
end

#check_resource_refs ⇒ Object 



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# File 'lib/cfndsl/orchestration_template.rb', line 49

def check_resource_refs
  invalids = []

  @_resource_refs = {}
  if @Resources
    @Resources.keys.each do |resource|
      @_resource_refs[resource.to_s] = @Resources[resource].build_references({})
    end
    @_resource_refs.keys.each do |origin|
      @_resource_refs[origin].keys.each do |ref|
        invalids.push "Invalid Reference: Resource #{origin} refers to #{ref}" unless valid_ref?(ref, origin)
      end
    end
  end

  invalids
end

#valid_ref?(ref, origin = nil) ⇒ Boolean

rubocop:disable Metrics/PerceivedComplexity

Returns:

  • (Boolean) 


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# File 'lib/cfndsl/orchestration_template.rb', line 27

def valid_ref?(ref, origin = nil)
  ref = ref.to_s
  origin = origin.to_s if origin

  return true if GlobalRefs.key?(ref)

  return true if @Parameters && @Parameters.key?(ref)

  if @Resources.key?(ref)
    return !origin || !@_resource_refs || !@_resource_refs[ref] || !@_resource_refs[ref].key?(origin)
  end

  false
end