How to set up Round-robin consumers between multiple topics

[Alge]

Is it possible to set up a consumer that fetches messages from a set of topics using a wildcard (for example public/default/jobs-.*), where the messages are pulled in a round-robin manner from all matching topics?

The problem I'm trying to solve is that we have a bunch of customers who periodically queue up jobs on their own customer-specific topic (public/default/jobs-customer1, public/default/jobs-customer2 etc), and our servers processes them. Sometime a customer can queue up a couple 100k jobs, which should not block all other customers who queue up jobs after. The number of active customers vary a lot, so a hard-coded list in the consumers would not be feasible. We also require low response times, so periodically re-loading the consumer to include new topics would not work well, as we would need to do that at least once every second.

Is there a pattern we can use that solves this, or is this simply not possible to do with Pulsar?

Is there for example a way of creating a pulsar function that makes sure there are at least x messages in a topic, populating it in a round-robin manner from all topics matching a regex? There is no need for a completely fair system, just one that doesn't let one (or a few) users block the rest