Class: Lono::Cfn::Download

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

Instance Method Summary collapse

Methods inherited from Base

#build_files, #build_scripts, #capabilities, #check_files, #check_for_errors, #command_with_iam, #continue_update_rollback, #continue_update_rollback_sure?, #delete_rollback_stack, #ensure_s3_bucket_exist, #exit_unless_updatable!, #generate_all, #generate_templates, #initialize, #param_generator, #post_process_templates, #pretty_path, #prompt_for_iam, #quit, #set_template_body!, #show_parameters, #stack_status, #starting_message, #status, #tags, #upload_files, #upload_scripts, #upload_templates

Methods included from Util

#are_you_sure?, #switch_current

Methods included from Suffix

#allow_suffix?, #append_suffix, #random_suffix, #remove_suffix, #stack_name_suffix

Methods included from Lono::Conventions

#template_param_convention

Methods included from Blueprint::Root

#bundler_groups, #find_blueprint_root, #require_bundle_gems, #set_blueprint_root

Methods included from AwsServices

#cfn, #ec2, #iam, #s3, #s3_presigner, #s3_resource, #sts

Methods included from AwsServices::Util

#find_stack, #rollback_complete?, #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 20

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 28

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 11

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 24

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

#run ⇒ Object 



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# File 'lib/lono/cfn/download.rb', line 5

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