require 'uuid'
require 'sitehub/constants'
class SiteHub
  module Middleware
    class TransactionId
      include Constants

      def initialize(app)
        @app = app
      end

      def call(env)
        env[RackHttpHeaderKeys::TRANSACTION_ID] ||= UUID.generate(:compact)
        @app.call env
      end
    end
  end
end