Module: BitFlipper::CLI

Defined in:
lib/corruption_monkey/cli.rb

Constant Summary collapse

DOCS = 
"CLI options:\n\n  1. Specific bit flip (by absolute or relative indexing)\n    $ flip <file_path> (<bit_index>|<percentage of file>%)\n\n  2. Chaos mode (randomized)\n    $ flip <file_path> chaos\n\nTo display help:\n  $ flip help\n"

Class Method Summary collapse

Class Method Details



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# File 'lib/corruption_monkey/cli.rb', line 17

def self.banner(s = $stdout)
  s.puts 'πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ '
  s.puts 'πŸ”₯ bit flipper chaos πŸ™ˆ  CLIπŸ”₯'
  s.puts 'πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ πŸ”₯ '
  s.puts
end

.start(args = ARGV) ⇒ Object 



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# File 'lib/corruption_monkey/cli.rb', line 24

def self.start(args = ARGV)
  file_path = args.shift
  second_argument = args.shift

  # Empty imput or docs request
  if (file_path.nil? && second_argument.nil?) ||
      (!File.file?(file_path) && file_path == 'help')
    puts DOCS
    exit 0
  end

  # First argument is not a (existing) file
  unless File.file?(file_path)
    $stderr.puts "The file with path=`#{file_path}` does not exist"
    exit 1
  end

  logger = Logger.new(STDOUT)
  banner

  case second_argument
  when 'chaos'
    puts 'chaos mode selected'
    puts
    BitFlipper.random_bit_flip(file_path, logger: logger)
  when /([0-9]{1, 2}|100)%/
    # this regex feels... weird
    puts 'percent mode selected'
    puts
    BitFlipper.flip_in_range(file_path,
                             percentile: second_argument.to_i,
                             logger: logger)
  when /[0-9]+/
    puts 'accurate mode selected'
    puts
    BitFlipper.flip!(file_path,
                     bit: second_argument.to_i,
                     logger: logger)
  else
    $stderr.puts 'nothing matches!'
    $stderr.puts DOCS
  end
end