Getting the exposed ports

[Tom Barber]

Hello folks

I want to write a firewall charm for those deployments that aren't in 
the cloud. The "easy" thing to do is provide a config block and have 
admins write in rules and just apply them. I was wondering though, if I 
wrote a subordinate charm on juju-info to attach to anything, is there 
any mechanism for me to find the exposed port of the parent charm? and 
whether its exposed or not?


Ta

Tom


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