def deadlettering_exchange(self, rabbit_config, exchange, queue):
conn = Connection(rabbit_config[AMQP_URI_CONFIG_KEY])
with connections[conn].acquire(block=True) as connection:
deadletter_exchange = Exchange(name="deadletter", type="topic")
deadletter_exchange.maybe_bind(connection)
deadletter_exchange.declare()
deadletter_queue = Queue(
name="deadletter",
exchange=deadletter_exchange,
routing_key="#",
queue_arguments={'x-dead-letter-exchange': exchange.name})
deadletter_queue.maybe_bind(connection)
deadletter_queue.declare()
return deadletter_exchange
