43 lines
1.0 KiB
Python
43 lines
1.0 KiB
Python
#!/usr/bin/env python3
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import os
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import sys
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import time
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import paho.mqtt.client as mqtt
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broker = os.getenv('MQTT_BROKER', 'localhost:1883')
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topic = os.getenv('MQTT_TOPIC', 'lambdaiot')
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username = os.getenv('MQTT_USERNAME')
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password = os.getenv('MQTT_PASSWORD')
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if broker.startswith('tcp://'):
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broker = broker[len('tcp://'):]
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host, sep, port = broker.partition(':')
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port = int(port) if sep else 1883
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def on_connect(client, userdata, flags, rc):
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print(f"Connected with result code {rc}")
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client.subscribe(topic)
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print(f"Subscribed to {topic}")
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def on_message(client, userdata, msg):
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try:
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payload = msg.payload.decode()
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except Exception:
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payload = str(msg.payload)
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print(f"[{msg.topic}] {payload}")
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client = mqtt.Client()
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client.on_connect = on_connect
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client.on_message = on_message
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if username:
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client.username_pw_set(username, password)
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try:
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client.connect(host, port, 60)
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except Exception as e:
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print("Could not connect to broker:", e)
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sys.exit(1)
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client.loop_forever()
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