Request for a redis-queue-outbound-gateway or similar component

This is a feature that could be interesting; the scenario is just this (but the component could be used in similar ones):

• A web service call a method and needs the response that includes some kind of resource identification, assigned when the task starts.
• However the server does not execute the request. The request goes to a Redis Queue using the queue-inbound and queue-outbound adapters.
• So any server will take the message and generate the identification, and then the client should be notified.

My design was based on using a gateway to have the reply channel, and using redis pub/sub facility to block and unblock the calling client, waiting for the ID. But there is not a component to build this automatically; if the server that executes the task send a message over redis I don't find any way of unblock over the gateway and continue.