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import paho.mqtt.client as mqtt
from paho.mqtt.enums import MQTTProtocolVersion
import json
from time import sleep
import os
def on_connect(client, userdata, flags, reason_code, properties):
print(f"Conectado: {reason_code}")
# Me inscrevo em todos os tópicos sobre clima
client.subscribe("weather/#")
# Simplesmente imprime a mensagem como texto.
def on_message(client, userdata, msg):
payload = json.loads(msg.payload)
print(msg.topic)
print(f"Value: {payload["value"]}")
print(f"Unit: {payload["unit"]}")
print(f"Timestamp: {payload["timestamp"]}")
try:
user_name = os.environ["MQTT_CLIENT_USER"]
user_pass = os.environ["MQTT_CLIENT_PASSWORD"]
except KeyError:
print("credentials not supplied in environment variables. Going unauthenticated...")
user_name = None
user_pass = None
mqttc = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2, protocol=MQTTProtocolVersion.MQTTv5)
mqttc.on_connect = on_connect
mqttc.on_message = on_message
mqttc.username_pw_set(user_name, user_pass)
connected = False
while(not connected):
try:
mqttc.connect("mosquitto", 1883, 60, '', 0, True)
connected = True
except ConnectionRefusedError:
print("Failed to connect. Retrying...")
sleep(5)
mqttc.loop_forever()
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