Message id matching in request-reply

[ebendal]

In the RequestReplyExample the id is injected in the message being sent.

But then the matching process starts and somehow the reply should contain the id as well. Lets say that the reply has a different message format.

For example this is the message sent:

{
  "x": 101
}

And this is the message received:

{
  "y": 101
}

In the builder you provide I can set the id for the message sent by using it inside the textMessage.

amqp("name").requestReply
        .topicExchange(name = "exchange-name, routingKey = "routing-key")
        .replyExchange("queue-name")
        .textMessage("{"x":#{id}}")
        .messageId("#{id}")

The message being sent is correct and the reply message is also delivered. But this message has some random generated id:

r.t.g.a.a.RequestReply - Message sent user=1 AMQPMessageID=101
r.t.g.a.c.TrackerPool - Message received AmqpMessageID=0aee5b62-cba1-1858-abe5-386b1ba4b412 matchId=0aee5b62-cba1-1858-abe5-386b1ba4b412

How can we parse the value of y in the reply message, in order to be used by the id matching algorithm?