Module: Cfer::Cli

Defined in:
lib/cfer/cli.rb

Constant Summary collapse

CFER_CLI = 
Cri::Command.define do
  name 'cfer'
  description 'Toolkit and Ruby DSL for automating infrastructure using AWS CloudFormation'
  flag nil, 'verbose', 'Runs Cfer with debug output enabled'

  optional :p, 'profile', 'The AWS profile to use from your credentials file'
  optional :r, 'region', 'The AWS region to use'

  optional nil, 'output-format', 'The output format to use when printing a stack [table|json]'

  optional nil, 'parameter', 'Sets a parameter to pass into the stack (format: `name:value`)', multiple: true
  optional nil, 'parameter-file', 'A YAML or JSON file with CloudFormation parameters to pass to the stack'
  optional nil, 'parameter-environment', 'If parameter_file is set, will merge the subkey of this into the parameter list.'

  flag :v, 'version', 'show the current version of cfer' do |value, cmd|
    puts Cfer::VERSION
    exit 0
  end

  flag  :h, 'help',  'show help for this command' do |value, cmd|
    puts cmd.help
    exit 0
  end
end
PARAM_REGEX = 
/(?<name>.+?)=(?<value>.+)/

Class Method Summary collapse

Class Method Details

.extract_parameters(params, args) ⇒ Object 



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# File 'lib/cfer/cli.rb', line 183

def self.extract_parameters(params, args)
  args.reject do |arg|
    if match = PARAM_REGEX.match(arg)
      name = match[:name]
      value = match[:value]
      Cfer::LOGGER.debug "Extracting parameter #{name}: #{value}"
      params[name] = value
    end
  end
end

.fixup_options(opts) ⇒ Object

Convert options of the form :'some-option' into :some_option. Cfer internally uses the latter format, while Cri options must be specified as the former. This approach is better than changing the names of all the options in the CLI.



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# File 'lib/cfer/cli.rb', line 197

def self.fixup_options(opts)
  opts.keys.map(&:to_s).each do |k|
    old_k = k.to_sym
    new_k = k.gsub('-', '_').to_sym
    val = opts[old_k]
    opts[new_k] = (Integer(val) rescue Float(val) rescue val)
    opts.delete(old_k) if old_k != new_k
  end
end

.main(args) ⇒ Object 



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# File 'lib/cfer/cli.rb', line 150

def self.main(args)
  Cfer::LOGGER.debug "Cfer version #{Cfer::VERSION}"
  begin
    CFER_CLI.run(args)
  rescue Aws::Errors::NoSuchProfileError => e
    Cfer::LOGGER.error "#{e.message}. Specify a valid profile with the --profile option."
    exit 1
  rescue Aws::Errors::MissingRegionError => e
    Cfer::LOGGER.error "Missing region. Specify a valid AWS region with the --region option, or use the AWS_REGION environment variable."
    exit 1
  rescue Interrupt
    Cfer::LOGGER.info 'Caught interrupt. Goodbye.'
  rescue Cfer::Util::TemplateError => e
    Cfer::LOGGER.fatal "Template error: #{e.message}"
    Cfer::LOGGER.fatal Cfer::Cli.format_backtrace(e.template_backtrace) unless e.template_backtrace.empty?
    exit 1
  rescue Cfer::Util::CferError, Cfer::Util::StackDoesNotExistError => e
    Cfer::LOGGER.error "#{e.message}"
    exit 1
  rescue StandardError => e
    Cfer::LOGGER.fatal "#{e.class.name}: #{e.message}"
    Cfer::LOGGER.fatal Cfer::Cli.format_backtrace(e.backtrace) unless e.backtrace.empty?

    if Cfer::DEBUG
      Pry::rescued(e)
    else
      #Cfer::Util.bug_report(e)
    end
    exit 1
  end
end