How to process many messages in parallel in mqtt - python-3.x

Question

I want to receive messages from many sensors (in the code I've tried from two) and process these messages in parallel by sending a command to the lights at the same time if the two sensors return "1". So I've done that in a separate thread but it doesn't work. It stops sending to the bedroom once someone enters the kitchen!
from class_light import Light
from test_class import Mqtt
import paho.mqtt.client as mqtt
import sys
import threading
import time
from MongoDB import is_circadian_Light
Broker = "broker.mqttdashboard.com"
username = "growthtechnology"
password = "growthtechnology"
PortaBroker = 1883
KeepAliveBroker = 60
client_name = "Local"
topic_sub = "testtopic/1"
topic_pub = "testtopic/3"
light = Mqtt()
occupancy_sensor = [("testtopic/4", 0), ("testtopic/5", 0)]
tunable_light = Light("deviceID")
def on_connect(client, userdata, flags, rc):
print("Connection to the broker. Result : "+str(rc))
client.subscribe(topic_sub)
client.subscribe(occupancy_sensor)
def on_publish(client,userdata,result):
print("Message published")
def on_disconnect(client, userdata, rc):
if rc != 0:
print("Unexpected disconnection.")
try:
print("[STATUS] Inicializando MQTT...")
#inicializing MQTT:
client = mqtt.Client()
client.username_pw_set(username, password)
client.on_connect = on_connect
client.on_message = light.message()
client.on_disconnect = on_disconnect
client.on_publish = on_publish
client.connect(Broker, PortaBroker, KeepAliveBroker)
def publishing():
while True:
msg = light.messages # calling for the variable "messages" to get PUBLISH messages
print(msg)
time.sleep(3)
topic = light.topic
if msg == "1" and topic == "testtopic/4":
if is_circadian_Light("device2") == 1 :
client.publish("testtopic/Bedroom",tunable_light.circadianLight())
time.sleep(10)
def publishing_kitchen():
while True:
msg_kitchen = light.messages
topic = light.topic
if msg_kitchen == "1" and topic == "testtopic/5":
if is_circadian_Light("device2") == 1 :
client.publish("testtopic/Kitchen",tunable_light.circadianLight())
time.sleep(10)
#code to turn off lights after 1 min
pub = threading.Thread(target= publishing)
pub.start()
pub_k = threading.Thread(target= publishing_kitchen)
pub_k.start()
client.loop_forever()
except KeyboardInterrupt:
print ("\nCtrl+C pressionado, encerrando aplicacao e saindo...")
sys.exit(0)
This the class Mqtt that I have created:
import paho.mqtt.client as mqtt
import time
class Mqtt():
def __init__(self, messages = "", topic = "", topic_1 = ""):
self._messages = messages
self._topic = topic
#property
def messages(self):
return self._messages
#messages.setter
def messages(self, messages):
self._messages = messages
#property
def topic(self):
return self._topic
#topic.setter
def topic(self, topic):
self._topic = topic
def message(self):
def on_message(client, userdata, msg):
Message = str(msg.payload.decode("utf-8"))
self._messages = Message
if msg.topic == "testtopic/4":
self._topic = msg.topic
print("[Receiving msg] Topic:" +msg.topic+" / Message: "+Message)
return on_message