To connect to a signal, the extension needs to instantiate
SignalHook and pass in the signal to connect to, the callback
function, and an optional sender.
import logging from reviewboard.extensions.base import Extension from reviewboard.extensions.hooks import SignalHook from reviewboard.reviews.signals import review_request_published class SampleExtension(Extension): def initialize(self): SignalHook(self, review_request_published, self.on_published) def on_published(self, review_request=None, **kwargs): logging.info('Review request %s was published!', review_request.display_id)