def _add_event_listener(self, exchange, topic, events): """Add or update event listener for specified exchange, topic. Create a new event listener for the event trigger if no existing listener relates to (exchange, topic). Or, restart existing event listener with updated events. """ key = (exchange, topic) if key in self.exchange_topic_listener_map: listener = self.exchange_topic_listener_map[key] listener.stop() listener.wait() endpoint = self._get_endpoint_cls(events)(self) LOG.debug("Starting to listen to AMQP. exchange: %s, topic: %s", exchange, topic) listener = mistral_messaging.start_listener( CONF, exchange, topic, [endpoint] ) self.exchange_topic_listener_map[key] = listener
def _add_event_listener(self, exchange, topic, events): """Add or update event listener for specified exchange, topic. Create a new event listener for the event trigger if no existing listener relates to (exchange, topic). Or, restart existing event listener with updated events. """ key = (exchange, topic) if key in self.exchange_topic_listener_map: listener = self.exchange_topic_listener_map[key] listener.stop() listener.wait() endpoint = self._get_endpoint_cls(events)(self) LOG.debug("Starting to listen to AMQP. exchange: %s, topic: %s", exchange, topic) listener = mistral_messaging.start_listener( CONF, exchange, topic, [endpoint] ) self.exchange_topic_listener_map[key] = listener