Tap as a service on openstack with Juju and MaaS

Hello, I've been struggling to configure tap as a service on openstack for a few months now. I can't find any guide or anything about it. Can you suggest a method of port mirroring? I've even via the ovs bridge but I really need a way to mirror data and send it to an instance for analysis as I'm working on an IDS. Thanks in advance for any ideas ! JB