def _handle_pipeline_event(self, event):
"""
Pipeline Event handler function to convert incoming MQTT messages into the appropriate DPS
events, based on the topic of the message
"""
if isinstance(event, pipeline_events_mqtt.IncomingMQTTMessageEvent):
topic = event.topic
if mqtt_topic_provisioning.is_dps_response_topic(topic):
logger.debug(
"Received payload:{payload} on topic:{topic}".format(
payload=event.payload, topic=topic))
key_values = mqtt_topic_provisioning.extract_properties_from_dps_response_topic(
topic)
retry_after = key_values.get("retry-after", None)
status_code = mqtt_topic_provisioning.extract_status_code_from_dps_response_topic(
topic)
request_id = key_values["rid"]
self.send_event_up(
pipeline_events_base.ResponseEvent(
request_id=request_id,
status_code=int(status_code, 10),
response_body=event.payload,
retry_after=retry_after,
))
else:
logger.debug(
"Unknown topic: {} passing up to next handler".format(
topic))
self.send_event_up(event)
else:
# all other messages get passed up
self.send_event_up(event)
def test_is_not_dps_response_topic(self, topic):
assert not mqtt_topic_provisioning.is_dps_response_topic(topic)