[Mailman-Developers] Creating an event catching plugin

Hello,

can you point me to existing, open-source mailman plugins?

I want to write a plugin, which fires on all subscriptions, unsubscriptions and configuration changes.

This code:

def subscribe_events(e): print('EVENT', e)

@implementer(IPlugin) class SievePlugin: def __init__(self): print('XXX') zope.event.subscribers.append(subscribe_events)

def post_hook(self):
    print('YYY')
    zope.event.subscribers.append(subscribe_events)

prints: XXX EVENT x@example.org joined zzz.udoma.bapha.be EVENT ab c <mm@example.org> joined zzz.udoma.bapha.be

or XXX EVENT x@example.org left zzz.udoma.bapha.be

on mailman addmembers/mailman delmembers. But it does not trigger a UnsubscriptionEvent or SubscriptionEvent.

Greetings Дилян