Class: Lono::Cfn::Create

Inherits:
Base
  • Object
show all
Defined in:
lib/lono/cfn/create.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_stack_name?, #run, #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

#create_stack(params) ⇒ Object

aws cloudformation create-stack –stack-name prod-hi-123456789 –parameters file://output/params/prod-hi-123456789.json –template-body file://output/prod-hi.json



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

def create_stack(params)
  message = "Creating #{@stack_name} stack."
  if @options[:noop]
    puts "NOOP #{message}"
    return
  end

  if stack_exists?(@stack_name)
    puts "Cannot create '#{@stack_name}' stack because it already exists.".colorize(:red)
    return
  end

  unless File.exist?(@template_path)
    puts "Cannot create '#{@stack_name}' template not found: #{@template_path}."
    return
  end

  template_body = IO.read(@template_path)
  params = {
    stack_name: @stack_name,
    template_body: template_body,
    parameters: params,
    capabilities: capabilities, # ["CAPABILITY_IAM", "CAPABILITY_NAMED_IAM"]
    disable_rollback: !@options[:rollback],
  }
  show_parameters(params, "cfn.create_stack")
  cfn.create_stack(params)
  puts message unless @options[:mute]
end

#randomize(stack_name) ⇒ Object

Appends a short random string at the end of a stack name. Later we will strip this same random string from the template name. Very makes it convenient. We can just type:

lono cfn create main --randomize-stack-name

instead of:

lono cfn create main-[RANDOM] --template main

The randomize_stack_name can be specified at the CLI but can also be saved as a preference.

It is not a default setting because it might confuse new lono users.



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# File 'lib/lono/cfn/create.rb', line 54

def randomize(stack_name)
  if randomize_stack_name?
    random = (0...3).map { (65 + rand(26)).chr }.join.downcase # Ex: jhx
    [stack_name, random].join('-')
  else
    stack_name
  end
end

#save_stack(params) ⇒ Object

save_stack is the interface method



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

def save_stack(params)
  create_stack(params)
end