Class: Cfhighlander::Compiler::ComponentCompiler

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

Constant Summary collapse

@@global_extensions_paths = 
[]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(component) ⇒ ComponentCompiler

Returns a new instance of ComponentCompiler.



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# File 'lib/cfhighlander.compiler.rb', line 36

def initialize(component)

  @workdir = ENV['CFHIGHLANDER_WORKDIR']
  @component = component
  @sub_components = []
  @component_name = component.highlander_dsl.name.downcase
  @cfndsl_compiled = false
  @config_compiled = false
  @cfn_template_paths = []
  @lambdas_processed = false
  @silent_mode = false
  @lambda_src_paths = []
  @config_yaml_path = nil
  @cfn_model = nil
  @process_lambdas = true

  if @@global_extensions_paths.empty?
    global_extensions_folder = "#{File.dirname(__FILE__)}/../cfndsl_ext"
    Dir["#{global_extensions_folder}/*.rb"].each { |f| @@global_extensions_paths << f }
  end

  @component.highlander_dsl.subcomponents.each do |sub_component|
    sub_component_compiler = Cfhighlander::Compiler::ComponentCompiler.new(sub_component.component_loaded)
    sub_component_compiler.component_name = sub_component.name
    @sub_components << sub_component_compiler
  end
end

Instance Attribute Details

#cfn_output_location ⇒ Object

Returns the value of attribute cfn_output_location.



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# File 'lib/cfhighlander.compiler.rb', line 24

def cfn_output_location
  @cfn_output_location
end

#cfn_template_paths ⇒ Object

Returns the value of attribute cfn_template_paths.



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# File 'lib/cfhighlander.compiler.rb', line 24

def cfn_template_paths
  @cfn_template_paths
end

#compiled_subcomponents ⇒ Object

Returns the value of attribute compiled_subcomponents.



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# File 'lib/cfhighlander.compiler.rb', line 24

def compiled_subcomponents
  @compiled_subcomponents
end

#component ⇒ Object

Returns the value of attribute component.



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# File 'lib/cfhighlander.compiler.rb', line 24

def component
  @component
end

#component_name ⇒ Object

Returns the value of attribute component_name.



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# File 'lib/cfhighlander.compiler.rb', line 24

def component_name
  @component_name
end

#config_output_location ⇒ Object

Returns the value of attribute config_output_location.



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# File 'lib/cfhighlander.compiler.rb', line 24

def config_output_location
  @config_output_location
end

#dsl_output_location ⇒ Object

Returns the value of attribute dsl_output_location.



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# File 'lib/cfhighlander.compiler.rb', line 24

def dsl_output_location
  @dsl_output_location
end

#lambda_src_paths ⇒ Object

Returns the value of attribute lambda_src_paths.



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# File 'lib/cfhighlander.compiler.rb', line 24

def lambda_src_paths
  @lambda_src_paths
end

#process_lambdas ⇒ Object

Returns the value of attribute process_lambdas.



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# File 'lib/cfhighlander.compiler.rb', line 24

def process_lambdas
  @process_lambdas
end

#silent_mode ⇒ Object

Returns the value of attribute silent_mode.



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# File 'lib/cfhighlander.compiler.rb', line 24

def silent_mode
  @silent_mode
end

#workdir ⇒ Object

Returns the value of attribute workdir.



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# File 'lib/cfhighlander.compiler.rb', line 24

def workdir
  @workdir
end

Instance Method Details

#clear_out_dir ⇒ Object 



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# File 'lib/cfhighlander.compiler.rb', line 64

def clear_out_dir
  # Clear previous packages
  FileUtils.rmtree "#{@workdir}/out/"
end

#compileCfnDsl(out_format) ⇒ Object 



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# File 'lib/cfhighlander.compiler.rb', line 79

def compileCfnDsl(out_format)
  processLambdas unless @lambdas_processed
  writeConfig unless @config_written
  dsl = @component.highlander_dsl
  component_cfndsl = @component.cfndsl_content

  @component.highlander_dsl.subcomponents.each { |sc|
    sc.distribution_format = out_format
  }

  # indent component cfndsl
  component_cfndsl.gsub!("\n", "\n\t")
  component_cfndsl.gsub!("\r\n", "\r\n\t")
  # render cfndsl
  renderer = ERB.new(File.read("#{__dir__}/../templates/cfndsl.component.template.erb"), nil, '-')
  cfn_template = renderer.result(OpenStruct.new({
      'dsl' => dsl,
      'component_cfndsl' => component_cfndsl,
      'component_requires' => (@@global_extensions_paths + @component.cfndsl_ext_files),
      'distribution_format' => out_format
  }).instance_eval { binding })

  # write to output file
  output_dir = "#{@workdir}/out/cfndsl"
  @dsl_output_location = output_dir
  output_path = "#{output_dir}/#{@component_name}.compiled.cfndsl.rb"
  FileUtils.mkdir_p(output_dir) unless Dir.exist?(output_dir)
  File.write(output_path, cfn_template)
  puts "cfndsl template for #{dsl.name} written to #{output_path}"
  @cfndsl_compiled_path = output_path

  @sub_components.each { |subcomponent_compiler|
    puts "Rendering sub-component cfndsl: #{subcomponent_compiler.component_name}"
    subcomponent_compiler.compileCfnDsl out_format
  }

  @cfndsl_compiled = true

end

#compileCloudFormation(format = 'yaml') ⇒ Object 



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# File 'lib/cfhighlander.compiler.rb', line 133

def compileCloudFormation(format = 'yaml')

  dsl = @component.highlander_dsl

  # create out dir if not there
  @cfn_output_location = "#{@workdir}/out/#{format}" if @cfn_output_location.nil?
  output_dir = @cfn_output_location
  FileUtils.mkdir_p(output_dir) unless Dir.exist?(output_dir)


  # compile templates
  output_path = "#{output_dir}/#{@component_name}.compiled.#{format}"
  @cfn_template_paths << output_path
  # configure cfndsl


  # grab cfndsl model

  # 1st pass of cloudformation compiling - does the substacks normally
  model = evaluateCloudFormation
  @component.set_cfndsl_model model

  # compile sub-component templates
  @sub_components.each do |sub_component|
    sub_component.compileCloudFormation format
    @cfn_template_paths += sub_component.cfn_template_paths
    @lambda_src_paths += sub_component.lambda_src_paths
  end

  # 2nd pass will flatten any inlined components
  model = Cfhighlander::Util::CloudFormation.flattenCloudformation(
      component: @component
  )

  # write resulting cloud formation template
  if format == 'json'
    output_content = JSON.pretty_generate(model)
  elsif format == 'yaml'
    output_content = JSON.parse(model.to_json).to_yaml
  else
    raise StandardError, "#{format} not supported for cfn generation"
  end

  File.write(output_path, output_content)
  # `cfndsl #{@cfndsl_compiled_path} -p -f #{format} -o #{output_path} --disable-binding`
  puts "CloudFormation #{format.upcase} template for #{dsl.name} written to #{output_path}"

  return JSON.parse(model.to_json)

end

#evaluateCloudFormation(format = 'yaml') ⇒ Object 



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# File 'lib/cfhighlander.compiler.rb', line 119

def evaluateCloudFormation(format = 'yaml')
  #compile cfndsl templates first
  compileCfnDsl format unless @cfndsl_compiled

  # write config
  cfndsl_opts = []
  cfndsl_opts.push([:yaml, @config_yaml_path])

  # grab cfndsl model
  model = CfnDsl.eval_file_with_extras(@cfndsl_compiled_path, cfndsl_opts, false)
  @cfn_model = model
  return model
end

#processLambdas ⇒ Object 



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# File 'lib/cfhighlander.compiler.rb', line 203

def processLambdas()
  @component.highlander_dsl.lambda_functions_keys.each do |lfk|
    resolver = LambdaResolver.new(@component,
        lfk,
        @workdir,
        (not @silent_mode)
    )
    @lambda_src_paths += resolver.generateSourceArchives if @process_lambdas
    resolver.mergeComponentConfig
  end

  @lambdas_processed = true

end

#writeConfig(write_subcomponents_config = false) ⇒ Object 



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# File 'lib/cfhighlander.compiler.rb', line 184

def writeConfig(write_subcomponents_config = false)
  @config_output_location = "#{@workdir}/out/config"
  config_yaml_path = "#{@config_output_location}/#{@component_name}.config.yaml"
  FileUtils.mkdir_p(@config_output_location) unless Dir.exist?(@config_output_location)

  File.write(config_yaml_path, @component.config.to_yaml)
  puts "Config for #{@component.highlander_dsl.name} written to #{config_yaml_path}"

  if write_subcomponents_config
    # compile sub-component templates
    @sub_components.each do |sub_component|
      sub_component.writeConfig write_subcomponents_config
    end
  end
  @config_written = true
  @config_yaml_path = config_yaml_path
  return @config_yaml_path
end