def booted_node(self, msg):
"""Receieve and process a boot message object from the base station
"""
if msg.get_special() != Packets.SPECIAL:
raise Exception("Corrupted packet - special is %02x not %02x" %
(msg.get_special(), Packets.SPECIAL))
try:
session = Session()
current_time = datetime.utcnow()
node_id = msg.getAddr()
clustered = msg.get_clustered()
version = msg.get_version()
version = "".join([chr(i) for i in version])
node = session.query(Node).get(node_id)
if node is None:
add_node(session, node_id)
b = NodeBoot(time=current_time,
nodeId=node_id,
clustered=clustered,
version=version)
session.add(b)
session.flush()
self.log.debug("boot: %s %s, %s, %s" % (current_time, node_id, clustered, version))
session.commit()
except Exception as exc:
session.rollback()
self.log.exception("error during storing (boot): " + str(exc))
finally:
session.close()
return True
def store_state(self, msg):
""" receive and process a message object from the base station
"""
if msg.get_special() != Packets.SPECIAL:
raise Exception("Corrupted packet - special is %02x not %02x" %
(msg.get_special(), Packets.SPECIAL))
try:
session = Session()
current_time = datetime.utcnow()
node_id = msg.getAddr()
parent_id = msg.get_ctp_parent_id()
seq = msg.get_seq()
rssi_val = msg.get_rssi()
node = session.query(Node).get(node_id)
loc_id = None
if node is None:
add_node(session, node_id)
else:
loc_id = node.locationId
pack_state = PackState.from_message(msg)
if duplicate_packet(session=session,
receipt_time=current_time,
node_id=node_id,
localtime=msg.get_timestamp()):
LOGGER.info("duplicate packet %d->%d, %d %s" %
(node_id, parent_id, msg.get_timestamp(), str(msg)))
return False
# write a node state row
node_state = NodeState(time=current_time,
nodeId=node_id,
parent=parent_id,
localtime=msg.get_timestamp(),
seq_num=seq,
rssi = rssi_val)
session.add(node_state)
for i, value in pack_state.d.iteritems():
type_id = i
if math.isinf(value) or math.isnan(value):
value = None
r = Reading(time=current_time,
nodeId=node_id,
typeId=type_id,
locationId=loc_id,
value=value)
try:
session.add(r)
session.flush()
except sqlalchemy.exc.IntegrityError, e:
self.log.error("Unable to store reading, checking if node type exists")
self.log.error(e)
session.rollback()
s = session.query(SensorType).filter_by(id=i).first()
if s is None:
s = SensorType(id=type_id,name="UNKNOWN")
session.add(s)
self.log.info("Adding new sensortype")
session.flush()
session.add(r)
session.flush()
else:
self.log.error("Sensor type exists")
self.log.debug("reading: %s, %s" % (node_state, pack_state))
session.commit()
#send acknowledgement to base station to fwd to node
self.send_ack(seq=seq,
dest=node_id)