def __init__(self, device, ip, port, p_type=1):
super(MQTTClient_Process, self).__init__()
self.ip = str(ip)
self.init_event = multiprocessing.Event()
self.update_event = multiprocessing.Event()
self.init_event.clear()
self.p_type = p_type
self.port = port
self.missed_msg = 0
self.daemon = True
self.json_lock = threading.RLock()
self.init = 0
self.device_name = str(device)
self.device = DeviceProfile(device, "MQTT")
self.profile = ''
self.dev_topic = ''
self.start_time = datetime.datetime.now()
# self.event_handler = JsonHandler(self.update_event)
# self.observer = Observer()
if(self.p_type == 0):
self.profile = jsonpickle.encode(self.device)
self.dev_topic = str(self.device.read_object(
'Dev_Name')) + '/' + str(int(self.device.read_object('Dev_HW_Ver')))
elif(self.p_type == 1 or self.p_type == 2):
temp_topic = re.split('_', str(device))
self.dev_topic = str(temp_topic[0] + '/' + temp_topic[1])
if(sys.platform == 'win32'):
print("Running on Windows")
class MQTTClient_Process(multiprocessing.Process):
def __init__(self, device, ip, port, p_type=1):
super(MQTTClient_Process, self).__init__()
self.ip = str(ip)
self.init_event = multiprocessing.Event()
self.update_event = multiprocessing.Event()
self.init_event.clear()
self.p_type = p_type
self.port = port
self.missed_msg = 0
self.daemon = True
self.json_lock = threading.RLock()
self.init = 0
self.device_name = str(device)
self.device = DeviceProfile(device, "MQTT")
self.profile = ''
self.dev_topic = ''
self.start_time = datetime.datetime.now()
# self.event_handler = JsonHandler(self.update_event)
# self.observer = Observer()
if(self.p_type == 0):
self.profile = jsonpickle.encode(self.device)
self.dev_topic = str(self.device.read_object(
'Dev_Name')) + '/' + str(int(self.device.read_object('Dev_HW_Ver')))
elif(self.p_type == 1 or self.p_type == 2):
temp_topic = re.split('_', str(device))
self.dev_topic = str(temp_topic[0] + '/' + temp_topic[1])
if(sys.platform == 'win32'):
print("Running on Windows")
def on_connect(self, mqttc, obj, flags, rc):
if rc == 0:
print("Connected")
print("rc: " + str(rc))
if(self.p_type == 0): # Current Device's Datapoint Publisher
self.mqttc.subscribe(str(self.dev_topic) + '/AIN/#')
print("Sub AIN")
self.mqttc.subscribe(str(self.dev_topic) + '/DIN/#')
print("Sub DIN")
self.mqttc.subscribe(str(self.dev_topic) + '/ACK')
print("Sub ACK")
if(self.init == 0):
self.mqttc.publish(
'join/' + str(self.dev_topic), 'Connect')
print("Pub Join")
elif(self.p_type == 1):
self.mqttc.subscribe(str(self.dev_topic) + '/AOUT/#')
print("Sub AOUT")
self.mqttc.subscribe(str(self.dev_topic) + '/DOUT/#')
print("Sub DOUT")
self.mqttc.publish(str(self.dev_topic) + '/ACK', 'ACK')
print("Pub ACK")
self.mqttc.subscribe(str(self.dev_topic) + '/JSON/#')
print("Sub JSON")
elif(self.p_type == 2):
self.mqttc.subscribe(str(self.dev_topic) + '/AIN/#')
self.mqttc.subscribe(str(self.dev_topic) + '/DIN/#')
self.mqttc.subscribe(str(self.dev_topic) + '/DOUT/#')
self.mqttc.subscribe(str(self.dev_topic) + '/AOUT/#')
print("Sub to ALL")
self.mqttc.publish(str(self.dev_topic) + '/ACK', 'ACK')
print("Pub ACK")
self.mqttc.subscribe(str(self.dev_topic) + '/JSON/#')
print("Sub JSON")
else:
print("Error in connect")
def on_publish(self, mqttc, obj, mid):
print("mid: " + str(mid))
def on_subscribe(self, mqttc, obj, mid, granted_qos):
print("Subscribed: " + str(mid) + " " + str(granted_qos))
def on_message(self, mqttc, obj, msg):
print(msg.topic + " " + str(msg.qos) + " " + str(msg.payload))
if(sys.version_info[0] == 3):
msg.payload = msg.payload.decode('utf-8')
split_topic = re.split('/', msg.topic)
if(self.p_type == 0):
if(split_topic[2] == 'ACK'):
if(msg.payload == 'ACK'):
self.mqttc.publish(
str(self.dev_topic) + '/JSON', str(self.profile))
if not (self.init_event.is_set()):
self.init_event.set()
self.init = 1
else:
self.read_command(msg)
elif(self.p_type == 1 or self.p_type == 2 ):
if(split_topic[2] == 'JSON'):
file_name = str(split_topic[0]) + \
'_' + str(split_topic[1]) + '.json'
file_name = 'json/' + str(file_name)
f = open(file_name, 'a')
f.seek(0)
f.truncate()
f.write(msg.payload)
f.close()
if not (self.init_event.is_set()):
self.init_event.set()
self.init = 1
else:
self.read_command(msg)
def on_log(self, mqttc, obj, level, string):
print(string)
def send_commands(self):
while True:
obj_topic = self.device.Delete_Change()
log("Object to be sent " + str(obj_topic), DEBUG)
if(obj_topic == 'Error'):
return
sp_topic = re.split('/', obj_topic)
try:
msg = self.device.read(sp_topic[0], int(sp_topic[1]))
except ValueError as e:
print(e)
print(msg)
datalog(msg,obj_topic,self.device_name,TX,(datetime.datetime.now()-self.start_time))
self.mqttc.publish(str(self.dev_topic) + '/' + obj_topic, msg)
def read_command(self, msg):
self.rx_msg = msg
log("Trying to Acquire JSON file", DEBUG,(datetime.datetime.now()-self.start_time))
#self.json_lock.acquire()
sp_msg = re.split('/', self.rx_msg.topic)
try:
log("Write " + str(sp_msg[2]) +
str(sp_msg[3]) + "to JSON File", DEBUG,(datetime.datetime.now()-self.start_time))
datalog(self.rx_msg.payload,str(sp_msg[2])+ '/' + str(sp_msg[3]),self.device_name,RX,(datetime.datetime.now()-self.start_time))
self.device.write(self.rx_msg.payload, sp_msg[2], int(sp_msg[3]))
except ValueError as e:
print(e)
#self.json_lock.release()
def run(self):
self.mqttc = mqtt.Client(
client_id="", clean_session=True, userdata=None, protocol=3)
self.mqttc.on_connect = self.on_connect
self.mqttc.on_publish = self.on_publish
self.mqttc.on_subscribe = self.on_subscribe
self.mqttc.on_message = self.on_message
# Uncomment to enable debug messages
self.mqttc.on_log = self.on_log
self.mqttc.connect(self.ip, self.port)
# mqttc.connect('ts7800-15.ece.ncsu.edu',8883)
self.mqttc.loop_start()
self.init_event.wait()
self.currtime = time.time()
# self.observer.schedule(event_handler, 'json/' , recursive=True)
# self.observer.start()
while True:
time.sleep(1)
try:
# self.update_event.wait()
if((time.time() - self.currtime) > TIME_CONSTANT):
log("Trying to Acquire JSON file", DEBUG,(datetime.datetime.now()-self.start_time))
#self.json_lock.acquire()
try:
log("Check JSON for Update", DEBUG, (datetime.datetime.now()-self.start_time))
self.device.update_object()
except ValueError as e:
print(e)
continue
if(self.device.updated()):
log("Sending Commands", EVENT, (datetime.datetime.now()-self.start_time))
self.send_commands()
self.currtime = time.time()
#self.json_lock.release()
# self.update_event.clear()
except KeyboardInterrupt:
self.mqttc.loop_stop()
self.mqttc.disconnect()
print("Exited Process")
break