class Aws::Plugins::UserAgent::Handler::UserAgent

def os_metadata
  os =
    case RbConfig::CONFIG['host_os']
    when /mac|darwin/
      'macos'
    when /linux|cygwin/
      'linux'
    when /mingw|mswin/
      'windows'
    else
      'other'
    end
  metadata = "os/#{os}"
  local_version = Gem::Platform.local.version
  metadata += "##{local_version}" if local_version
  metadata += " md/#{RbConfig::CONFIG['host_cpu']}"
  metadata
end