module App::Helpers::Async

Public Instance Methods

defer(future) click to toggle source
# File app/helpers/async.rb, line 6
def defer(future)
  future.on_success do |result|
    env["async.callback"].call([
      200,
      {
        'Content-Type' => 'application/json'
      },
      [json_dump(result)]
    ])
  end

  future.on_failure do |error|
    status = case error
    when Cassandra::Errors::NoHostsAvailable
      503
    when Cassandra::Errors::AuthenticationError
      401
    when Cassandra::Errors::UnauthorizedError
      403
    when Cassandra::Errors::ExecutionError
      504
    when Cassandra::Error
      400
    when
      500
    end

    env["async.callback"].call([
      status,
      {
        'Content-Type' => 'application/json'
      },
      [json_dump(error)]
    ])
  end

  throw :async
end