Class: Lamma::CLI::Init

Inherits:
Object
  • Object
show all
Includes:
SharedHelpers, Thor::Actions
Defined in:
lib/lamma/cli/init.rb

Constant Summary collapse

ROLE_ARN_PLACEHOLDER = 
'YOUR_ROLE_ARN'
DEFAULT_LAMBDA_ASSUME_ROLE_POLICY = 
{
  'Version': '2012-10-17',
  'Statement':
  [
    {
      'Effect': 'Allow',
      'Principal':
      {
        'Service': 'lambda.amazonaws.com'
      },
      'Action': 'sts:AssumeRole',
    },
  ],
}

Constants included from SharedHelpers

SharedHelpers::DEFAULT_PROFILE

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from SharedHelpers

#ini_config, #ini_credentials, #region_or_raise, #search_conf_path

Constructor Details

#initialize(options, function_name, thor) ⇒ Init

Returns a new instance of Init.



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# File 'lib/lamma/cli/init.rb', line 35

def initialize(options, function_name, thor)
  @options = options
  @thor = thor
  runtime_str = options.fetch('runtime') { raise ArgumentError.new('runtime must be set.') }
  @runtime = Lamma::Runtime.new(runtime_str)
  @function_name = function_name
  @target = Pathname.pwd.join(function_name)
end

Instance Attribute Details

#function_name ⇒ Object (readonly)

Returns the value of attribute function_name.



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# File 'lib/lamma/cli/init.rb', line 33

def function_name
  @function_name
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/lamma/cli/init.rb', line 33

def options
  @options
end

#runtime ⇒ Object (readonly)

Returns the value of attribute runtime.



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# File 'lib/lamma/cli/init.rb', line 33

def runtime
  @runtime
end

#target ⇒ Object (readonly)

Returns the value of attribute target.



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# File 'lib/lamma/cli/init.rb', line 33

def target
  @target
end

#thor ⇒ Object (readonly)

Returns the value of attribute thor.



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# File 'lib/lamma/cli/init.rb', line 33

def thor
  @thor
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/lamma/cli/init.rb', line 44

def run
  if Dir.exist?(target)
    abort("Directory '#{target}' already exists.")
  end

  tpath = File.join(File.dirname(__FILE__), '..', 'templates', runtime.to_dirname)
  templates = Dir.glob(File.join(tpath, '**/*.erb')).map do |path|
    tar_file = path[tpath.length..path.length - 5] # /foo/bar/templates/RUNTIME/baz/lambda_function.py.erb => /baz/lambda_function.py

    [File.expand_path(path), File.join(target, tar_file)]
  end.to_h

  unless Dir.exist?(target)
    FileUtils.makedirs(target)
  end

  role_arn = options['role_arn']

  unless role_arn
    role_name = "#{function_name}-lamma-role"
    thor.say("Looks like you didn't specified role arn for the function.", :yellow)
    y_or_n = thor.ask("Do you want me to create default IAM role and configure it (#{role_name})? (y/n)", :yellow)

    if y_or_n =~ /^[yY]/
      role_arn = create_initial_role(role_name)
    else
      role_arn = 'YOUR_ROLE_ARN'
    end
  end

  templates.each do |src, dst|
    thor.say_status(:create, dst)

    File.open(dst, "w") do |f|
      template = File.read(src)
      formatted = ERB.new(template).result(binding)
      f.write(formatted)
    end
  end


  Lamma.logger.info "Initializing git repo in #{target}"
  Dir.chdir(target) do
    `git init`
    `git add .`
  end
end