def _on_message(self, client, userdata, msg):
"""
Callback - MQTT client message received
"""
self.logger.debug("Message arrived: " + msg.topic)
tokens = msg.topic.split("/")
# Ensure topic matches current node
if tokens[0] == "spBv1.0" and tokens[1] == self.group_id and (
tokens[2] == "NCMD"
or tokens[2] == "DCMD") and tokens[3] == self.node_id:
payload = sparkplug_b_pb2.Payload()
payload.ParseFromString(msg.payload)
if tokens[4] is not None:
for device_key in self._node_devices:
if device_key == tokens[4]:
self._node_devices[device_key]._consume_msg(payload)
else:
super()._consume_msg(payload)
else:
self.logger.error(
"subscribed topic is unequal to compared node / device id")
def getNodeBirthPayload():
global seqNum
seqNum = 0
payload = sparkplug_b_pb2.Payload()
payload.timestamp = int(round(time.time() * 1000))
payload.seq = getSeqNum()
addMetric(payload, "bdSeq", None, MetricDataType.Int64, --bdSeq)
return payload
def getDeviceBirthPayload():
payload = sparkplug_b_pb2.Payload()
payload.timestamp = int(round(time.time() * 1000))
payload.seq = getSeqNum()
return payload
def getNodeDeathPayload():
payload = sparkplug_b_pb2.Payload()
addMetric(payload, "bdSeq", None, MetricDataType.Int64, getBdSeqNum())
return payload
