Class: Lono::Cfn::Download

Inherits:
Base
  • Object
show all
Defined in:
lib/lono/cfn/download.rb

Instance Attribute Summary

Attributes inherited from Base

#randomize_stack_name

Instance Method Summary collapse

Methods inherited from Base

#build_scripts, #capabilities, #check_files, #check_for_errors, #command_with_iam, #convention_path, #derandomize, #exit_unless_updatable!, #generate_all, #generate_params, #generate_templates, #get_source_path, #initialize, #prompt_for_iam, #quit, #randomize, #randomize_stack_name?, #s3_folder, #show_parameters, #stack_status, #upload_scripts, #upload_templates

Methods included from Util

#are_you_sure?

Methods included from AwsService

#cfn, #stack_exists?, #testing_update?

Constructor Details

This class inherits a constructor from Lono::Cfn::Base

Instance Method Details

#convert_to_yaml(body) ⇒ Object 



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# File 'lib/lono/cfn/download.rb', line 19

def convert_to_yaml(body)
  json?(body) ? YAML.dump(JSON.parse(body)) : body
end

#download_path ⇒ Object 



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# File 'lib/lono/cfn/download.rb', line 27

def download_path
  name = @options[:name] || @stack_name
  "/tmp/#{name}.yml"
end

#download_template ⇒ Object 



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# File 'lib/lono/cfn/download.rb', line 10

def download_template
  resp = cfn.get_template(
    stack_name: @stack_name,
    template_stage: "Original"
  )
  body = convert_to_yaml(resp.template_body)
  IO.write(download_path, body)
end

#json?(body) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lono/cfn/download.rb', line 23

def json?(body)
  !!JSON.parse(body) rescue false
end

#run ⇒ Object 



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# File 'lib/lono/cfn/download.rb', line 4

def run
  puts "Download existing template to: #{download_path}"
  return if @options[:noop]
  download_template
end