class Faraday::Response::RaiseError

def on_complete(env)
  case env[:status]
  when 400
    raise Faraday::BadRequestError, response_values(env)
  when 401
    raise Faraday::UnauthorizedError, response_values(env)
  when 403
    raise Faraday::ForbiddenError, response_values(env)
  when 404
    raise Faraday::ResourceNotFound, response_values(env)
  when 407
    # mimic the behavior that we get with proxy requests with HTTPS
    msg = %(407 "Proxy Authentication Required")
    raise Faraday::ProxyAuthError.new(msg, response_values(env))
  when 409
    raise Faraday::ConflictError, response_values(env)
  when 422
    raise Faraday::UnprocessableEntityError, response_values(env)
  when ClientErrorStatuses
    raise Faraday::ClientError, response_values(env)
  when ServerErrorStatuses
    raise Faraday::ServerError, response_values(env)
  when nil
    raise Faraday::NilStatusError, response_values(env)
  end
end