Class: Cfhighlander::Model::Component

Inherits:
Object
  • Object
show all
Defined in:
lib/cfhighlander.model.component.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(template_meta, component_name, factory) ⇒ Component

Returns a new instance of Component.



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# File 'lib/cfhighlander.model.component.rb', line 37

def initialize(template_meta, component_name, factory)
  @template = template_meta
  @name = component_name
  @component_dir = template_meta.template_location
  @mappings = {}
  @version = template_meta.template_version
  @distribution_bucket = nil
  @distribution_prefix = nil
  @component_files = []
  @cfndsl_ext_files = []
  @lambda_src_files = []
  @factory = factory
  @extended_component = nil
  @parent_dsl = nil
  @potential_subcomponent_overrides = {}
  @is_parent_component = false
end

Instance Attribute Details

#cfn_model ⇒ Object (readonly)

Returns the value of attribute cfn_model.



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# File 'lib/cfhighlander.model.component.rb', line 30

def cfn_model
  @cfn_model
end

#cfndsl_content ⇒ Object

Returns the value of attribute cfndsl_content.



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# File 'lib/cfhighlander.model.component.rb', line 9

def cfndsl_content
  @cfndsl_content
end

#cfndsl_ext_files ⇒ Object

Returns the value of attribute cfndsl_ext_files.



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# File 'lib/cfhighlander.model.component.rb', line 9

def cfndsl_ext_files
  @cfndsl_ext_files
end

#cfndsl_path ⇒ Object

Returns the value of attribute cfndsl_path.



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# File 'lib/cfhighlander.model.component.rb', line 9

def cfndsl_path
  @cfndsl_path
end

#component_dir ⇒ Object

Returns the value of attribute component_dir.



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# File 'lib/cfhighlander.model.component.rb', line 9

def component_dir
  @component_dir
end

#component_files ⇒ Object

Returns the value of attribute component_files.



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# File 'lib/cfhighlander.model.component.rb', line 9

def component_files
  @component_files
end

#config ⇒ Object

Returns the value of attribute config.



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# File 'lib/cfhighlander.model.component.rb', line 9

def config
  @config
end

#distribution_bucket ⇒ Object

Returns the value of attribute distribution_bucket.



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# File 'lib/cfhighlander.model.component.rb', line 9

def distribution_bucket
  @distribution_bucket
end

#distribution_prefix ⇒ Object

Returns the value of attribute distribution_prefix.



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# File 'lib/cfhighlander.model.component.rb', line 9

def distribution_prefix
  @distribution_prefix
end

#extended_component ⇒ Object

Returns the value of attribute extended_component.



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# File 'lib/cfhighlander.model.component.rb', line 9

def extended_component
  @extended_component
end

#factory ⇒ Object

Returns the value of attribute factory.



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# File 'lib/cfhighlander.model.component.rb', line 9

def factory
  @factory
end

#highlander_dsl ⇒ Object

Returns the value of attribute highlander_dsl.



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# File 'lib/cfhighlander.model.component.rb', line 9

def highlander_dsl
  @highlander_dsl
end

#highlander_dsl_path ⇒ Object

Returns the value of attribute highlander_dsl_path.



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# File 'lib/cfhighlander.model.component.rb', line 9

def highlander_dsl_path
  @highlander_dsl_path
end

#is_parent_component ⇒ Object

Returns the value of attribute is_parent_component.



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# File 'lib/cfhighlander.model.component.rb', line 9

def is_parent_component
  @is_parent_component
end

#lambda_src_files ⇒ Object

Returns the value of attribute lambda_src_files.



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# File 'lib/cfhighlander.model.component.rb', line 9

def lambda_src_files
  @lambda_src_files
end

#mappings ⇒ Object

Returns the value of attribute mappings.



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# File 'lib/cfhighlander.model.component.rb', line 9

def mappings
  @mappings
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/cfhighlander.model.component.rb', line 9

def name
  @name
end

#outputs ⇒ Object (readonly)

Returns the value of attribute outputs.



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# File 'lib/cfhighlander.model.component.rb', line 30

def outputs
  @outputs
end

#parent_template ⇒ Object

Returns the value of attribute parent_template.



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# File 'lib/cfhighlander.model.component.rb', line 9

def parent_template
  @parent_template
end

#potential_subcomponent_overrides ⇒ Object (readonly)

Returns the value of attribute potential_subcomponent_overrides.



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# File 'lib/cfhighlander.model.component.rb', line 30

def potential_subcomponent_overrides
  @potential_subcomponent_overrides
end

#template ⇒ Object

Returns the value of attribute template.



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# File 'lib/cfhighlander.model.component.rb', line 9

def template
  @template
end

#template_finder ⇒ Object

Returns the value of attribute template_finder.



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# File 'lib/cfhighlander.model.component.rb', line 9

def template_finder
  @template_finder
end

#version ⇒ Object

Returns the value of attribute version.



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# File 'lib/cfhighlander.model.component.rb', line 9

def version
  @version
end

Instance Method Details

#eval_cfndsl ⇒ Object

evaluates cfndsl with current config



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# File 'lib/cfhighlander.model.component.rb', line 234

def eval_cfndsl
  compiler = Cfhighlander::Compiler::ComponentCompiler.new self
  # there is no need for processing lambda source code during cloudformation evaluation,
  # this version never gets published
  compiler.process_lambdas = false
  @cfn_model = compiler.evaluateCloudFormation().as_json
  @outputs = (
  if @cfn_model.key? 'Outputs'
  then
    @cfn_model['Outputs'].map { |k, v| ComponentOutput.new self, k, v }
  else
    []
  end
  )
end

#evaluateHiglanderTemplate ⇒ Object 



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# File 'lib/cfhighlander.model.component.rb', line 212

def evaluateHiglanderTemplate
  loadCfndslContent

  cfhl_script = ''
  @config.each do |key, val|
    cfhl_script += ("\n#{key} = #{val.inspect}\n")
  end
  cfhl_script += File.read(@highlander_dsl_path)

  cfhl_dsl = eval(cfhl_script, binding)
  if not cfhl_dsl.extended_template.nil?
    @parent_template = cfhl_dsl.extended_template
    inheritParentTemplate
    puts "INFO: #{@template} extends #{@parent_template}, loading parent definition..."
    # 2nd pass, template instance is already created from parent
    @highlander_dsl = eval(cfhl_script, binding)
  else
    @highlander_dsl = cfhl_dsl
  end
end

#inheritParentTemplate ⇒ Object 



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# File 'lib/cfhighlander.model.component.rb', line 173

def inheritParentTemplate
  if not @parent_template.nil?
    extended_component = @factory.loadComponentFromTemplate(@parent_template)
    extended_component.is_parent_component = true
    extended_component.load(@config)

    @config = extended_component.config.extend(@config)
    @mappings = extended_component.mappings.extend(@mappings)
    @cfndsl_ext_files += extended_component.cfndsl_ext_files
    @lambda_src_files += extended_component.lambda_src_files
    @extended_component = extended_component

    # extend cfndsl, first comes parent, than child
    # this allows for child component to shadow parent component
    # defined resources
    @cfndsl_content = extended_component.cfndsl_content + @cfndsl_content

    @parent_dsl = extended_component.highlander_dsl

  end
end

#load(config_override = nil) ⇒ Object

evaluate components template

Parameters:

  • config_override (Hash) (defaults to: nil) 


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# File 'lib/cfhighlander.model.component.rb', line 100

def load(config_override = nil)
  if @component_dir.start_with? 'http'
    raise StandardError, 'http(s) sources not supported yet'
  end

  legacy_cfhighlander_path = "#{@component_dir}/#{@template.template_name}.highlander.rb"
  if File.exist? legacy_cfhighlander_path
    STDERR.puts "DEPRECATED: #{legacy_cfhighlander_path} - Use *.cfhighlander.rb"
    @highlander_dsl_path = legacy_cfhighlander_path
  else
    @highlander_dsl_path = "#{@component_dir}/#{@template.template_name}.cfhighlander.rb"
  end

  @cfndsl_path = "#{@component_dir}/#{@template.template_name}.cfndsl.rb"
  candidate_mappings_path = "#{@component_dir}/*.mappings.yaml"
  candidate_dynamic_mappings_path = "#{@component_dir}/#{@template.template_name}.mappings.rb"

  @cfndsl_ext_files += Dir["#{@component_dir}/ext/cfndsl/*.rb"]
  @lambda_src_files += Dir["#{@component_dir}/lambdas/**/*"].find_all { |p| not File.directory? p }
  @component_files += @cfndsl_ext_files
  @component_files += @lambda_src_files

  @config = {} if @config.nil?

  @config.extend config_override unless config_override.nil?
  @config['component_version'] = @version unless @version.nil?
  @config['component_name'] = @name
  @config['template_name'] = @template.template_name
  @config['template_version'] = @template.template_version


  Dir[candidate_mappings_path].each do |mapping_file|
    mappings = YAML.load(File.read(mapping_file))
    @component_files << mapping_file
    mappings.each do |name, map|
      @mappings[name] = map
    end unless mappings.nil?
  end

  if File.exist? candidate_dynamic_mappings_path
    require candidate_dynamic_mappings_path
    @component_files << candidate_dynamic_mappings_path
  end

  @component_files << @highlander_dsl_path


  # evaluate template file and load parent if defined
  evaluateHiglanderTemplate

  # set version if not defined
  @highlander_dsl.ComponentVersion(@version) unless @version.nil?


  if @highlander_dsl.description.nil?
    if template.template_name == @name
      description = "#{@name}@#{template.template_version} - v#{@highlander_dsl.version}"
    else
      description = "#{@name} - v#{@highlander_dsl.version}"
      description += " (#{template.template_name}@#{template.template_version})"
    end

    @highlander_dsl.Description(description)
  end unless @is_parent_component

  # set (override) distribution options
  @highlander_dsl.DistributionBucket(@distribution_bucket) unless @distribution_bucket.nil?
  @highlander_dsl.DistributionPrefix(@distribution_prefix) unless @distribution_prefix.nil?


  loadDepandantExt()
end

#load_config ⇒ Object

load component configuration files



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# File 'lib/cfhighlander.model.component.rb', line 70

def load_config()
  @config = {} if @config.nil?
  Dir["#{@component_dir}/*.config.yaml"].each do |config_file|
    puts "INFO Loading config for #{@name}: read file:#{config_file} "
    partial_config = YAML.load(File.read(config_file))
    if (not partial_config)
      STDERR.puts "WARNING: Configuration file #{config_file} could not be loaded"
      next
    end
    unless (partial_config.nil? or partial_config.key? 'subcomponent_config_file')
      @config.extend(partial_config)
      @component_files << config_file
    end
    fname = File.basename(config_file)
    potential_component_name = fname.gsub('.config.yaml', '')
    @potential_subcomponent_overrides[potential_component_name] = partial_config
  end
end

#loadCfndslContent ⇒ Object 



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# File 'lib/cfhighlander.model.component.rb', line 195

def loadCfndslContent
  if File.exist? @cfndsl_path
    @component_files << @cfndsl_path
    @cfndsl_content = File.read(@cfndsl_path)
    @cfndsl_content.strip!
    # if there is CloudFormation do [content] end extract only contents
    ### Regex \s is whitespace
    match_data = /^CloudFormation do\s(.*)end\s?$/m.match(@cfndsl_content)
    if not match_data.nil?
      @cfndsl_content = match_data[1]
    end

  else
    @cfndsl_content = ''
  end
end

#loadDepandantExt ⇒ Object

load extensions



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# File 'lib/cfhighlander.model.component.rb', line 90

def loadDepandantExt()
  @highlander_dsl.dependson_components.each do |requirement|
    requirement.component_loaded.cfndsl_ext_files.each do |file|
      cfndsl_ext_files << file
    end
  end
end