Support wildcards in MQTT topic filters matching retained messages

[ansd]

MQTT spec:

the Server MUST send the retained messages matching the Topic Filter of the subscription to the Client

However, RabbitMQ does not send retained messages for Topic Filters containing wildcards.

[robertsLando]

A future RabbitMQ release will replicate retained messages in the cluster and also send retained messages matching topic filters containing wildcards.

Does this issue also takes track also of the first part about the retained messages that are not replicated in the cluster? In my case this is a big limitation, is there any work in progress or ETA for that?

[ansd]

Does this issue also takes track also of the first part about the retained messages that are not replicated in the cluster?

No, this is tracked in #8096

is there any work in progress or ETA for that?

No. For the time being you can write your own plugin as for example done in https://github.com/gery0815/rabbitmq-mqtt-retained-msg-redis

[robertsLando]

@ansd Thanks for that! Is there any mongodb alternative? Otherwise we could create one

cc @getlarge

[ansd]

Is there any mongodb alternative?

I'm not aware of a mongodb plugin.